diff options
Diffstat (limited to 'drivers/scsi/be2iscsi/be_main.c')
| -rw-r--r-- | drivers/scsi/be2iscsi/be_main.c | 5828 |
1 files changed, 5828 insertions, 0 deletions
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c new file mode 100644 index 000000000..1f74760ce --- /dev/null +++ b/drivers/scsi/be2iscsi/be_main.c @@ -0,0 +1,5828 @@ +/** + * Copyright (C) 2005 - 2015 Avago Technologies + * All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. The full GNU General + * Public License is included in this distribution in the file called COPYING. + * + * Written by: Jayamohan Kallickal (jayamohan.kallickal@avagotech.com) + * + * Contact Information: + * linux-drivers@avagotech.com + * + * Avago Technologies + * 3333 Susan Street + * Costa Mesa, CA 92626 + */ + +#include <linux/reboot.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/blkdev.h> +#include <linux/pci.h> +#include <linux/string.h> +#include <linux/kernel.h> +#include <linux/semaphore.h> +#include <linux/iscsi_boot_sysfs.h> +#include <linux/module.h> +#include <linux/bsg-lib.h> + +#include <scsi/libiscsi.h> +#include <scsi/scsi_bsg_iscsi.h> +#include <scsi/scsi_netlink.h> +#include <scsi/scsi_transport_iscsi.h> +#include <scsi/scsi_transport.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi.h> +#include "be_main.h" +#include "be_iscsi.h" +#include "be_mgmt.h" +#include "be_cmds.h" + +static unsigned int be_iopoll_budget = 10; +static unsigned int be_max_phys_size = 64; +static unsigned int enable_msix = 1; + +MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR); +MODULE_VERSION(BUILD_STR); +MODULE_AUTHOR("Avago Technologies"); +MODULE_LICENSE("GPL"); +module_param(be_iopoll_budget, int, 0); +module_param(enable_msix, int, 0); +module_param(be_max_phys_size, uint, S_IRUGO); +MODULE_PARM_DESC(be_max_phys_size, + "Maximum Size (In Kilobytes) of physically contiguous " + "memory that can be allocated. Range is 16 - 128"); + +#define beiscsi_disp_param(_name)\ +ssize_t \ +beiscsi_##_name##_disp(struct device *dev,\ + struct device_attribute *attrib, char *buf) \ +{ \ + struct Scsi_Host *shost = class_to_shost(dev);\ + struct beiscsi_hba *phba = iscsi_host_priv(shost); \ + uint32_t param_val = 0; \ + param_val = phba->attr_##_name;\ + return snprintf(buf, PAGE_SIZE, "%d\n",\ + phba->attr_##_name);\ +} + +#define beiscsi_change_param(_name, _minval, _maxval, _defaval)\ +int \ +beiscsi_##_name##_change(struct beiscsi_hba *phba, uint32_t val)\ +{\ + if (val >= _minval && val <= _maxval) {\ + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\ + "BA_%d : beiscsi_"#_name" updated "\ + "from 0x%x ==> 0x%x\n",\ + phba->attr_##_name, val); \ + phba->attr_##_name = val;\ + return 0;\ + } \ + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, \ + "BA_%d beiscsi_"#_name" attribute "\ + "cannot be updated to 0x%x, "\ + "range allowed is ["#_minval" - "#_maxval"]\n", val);\ + return -EINVAL;\ +} + +#define beiscsi_store_param(_name) \ +ssize_t \ +beiscsi_##_name##_store(struct device *dev,\ + struct device_attribute *attr, const char *buf,\ + size_t count) \ +{ \ + struct Scsi_Host *shost = class_to_shost(dev);\ + struct beiscsi_hba *phba = iscsi_host_priv(shost);\ + uint32_t param_val = 0;\ + if (!isdigit(buf[0]))\ + return -EINVAL;\ + if (sscanf(buf, "%i", ¶m_val) != 1)\ + return -EINVAL;\ + if (beiscsi_##_name##_change(phba, param_val) == 0) \ + return strlen(buf);\ + else \ + return -EINVAL;\ +} + +#define beiscsi_init_param(_name, _minval, _maxval, _defval) \ +int \ +beiscsi_##_name##_init(struct beiscsi_hba *phba, uint32_t val) \ +{ \ + if (val >= _minval && val <= _maxval) {\ + phba->attr_##_name = val;\ + return 0;\ + } \ + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\ + "BA_%d beiscsi_"#_name" attribute " \ + "cannot be updated to 0x%x, "\ + "range allowed is ["#_minval" - "#_maxval"]\n", val);\ + phba->attr_##_name = _defval;\ + return -EINVAL;\ +} + +#define BEISCSI_RW_ATTR(_name, _minval, _maxval, _defval, _descp) \ +static uint beiscsi_##_name = _defval;\ +module_param(beiscsi_##_name, uint, S_IRUGO);\ +MODULE_PARM_DESC(beiscsi_##_name, _descp);\ +beiscsi_disp_param(_name)\ +beiscsi_change_param(_name, _minval, _maxval, _defval)\ +beiscsi_store_param(_name)\ +beiscsi_init_param(_name, _minval, _maxval, _defval)\ +DEVICE_ATTR(beiscsi_##_name, S_IRUGO | S_IWUSR,\ + beiscsi_##_name##_disp, beiscsi_##_name##_store) + +/* + * When new log level added update the + * the MAX allowed value for log_enable + */ +BEISCSI_RW_ATTR(log_enable, 0x00, + 0xFF, 0x00, "Enable logging Bit Mask\n" + "\t\t\t\tInitialization Events : 0x01\n" + "\t\t\t\tMailbox Events : 0x02\n" + "\t\t\t\tMiscellaneous Events : 0x04\n" + "\t\t\t\tError Handling : 0x08\n" + "\t\t\t\tIO Path Events : 0x10\n" + "\t\t\t\tConfiguration Path : 0x20\n" + "\t\t\t\tiSCSI Protocol : 0x40\n"); + +DEVICE_ATTR(beiscsi_drvr_ver, S_IRUGO, beiscsi_drvr_ver_disp, NULL); +DEVICE_ATTR(beiscsi_adapter_family, S_IRUGO, beiscsi_adap_family_disp, NULL); +DEVICE_ATTR(beiscsi_fw_ver, S_IRUGO, beiscsi_fw_ver_disp, NULL); +DEVICE_ATTR(beiscsi_phys_port, S_IRUGO, beiscsi_phys_port_disp, NULL); +DEVICE_ATTR(beiscsi_active_session_count, S_IRUGO, + beiscsi_active_session_disp, NULL); +DEVICE_ATTR(beiscsi_free_session_count, S_IRUGO, + beiscsi_free_session_disp, NULL); +struct device_attribute *beiscsi_attrs[] = { + &dev_attr_beiscsi_log_enable, + &dev_attr_beiscsi_drvr_ver, + &dev_attr_beiscsi_adapter_family, + &dev_attr_beiscsi_fw_ver, + &dev_attr_beiscsi_active_session_count, + &dev_attr_beiscsi_free_session_count, + &dev_attr_beiscsi_phys_port, + NULL, +}; + +static char const *cqe_desc[] = { + "RESERVED_DESC", + "SOL_CMD_COMPLETE", + "SOL_CMD_KILLED_DATA_DIGEST_ERR", + "CXN_KILLED_PDU_SIZE_EXCEEDS_DSL", + "CXN_KILLED_BURST_LEN_MISMATCH", + "CXN_KILLED_AHS_RCVD", + "CXN_KILLED_HDR_DIGEST_ERR", + "CXN_KILLED_UNKNOWN_HDR", + "CXN_KILLED_STALE_ITT_TTT_RCVD", + "CXN_KILLED_INVALID_ITT_TTT_RCVD", + "CXN_KILLED_RST_RCVD", + "CXN_KILLED_TIMED_OUT", + "CXN_KILLED_RST_SENT", + "CXN_KILLED_FIN_RCVD", + "CXN_KILLED_BAD_UNSOL_PDU_RCVD", + "CXN_KILLED_BAD_WRB_INDEX_ERROR", + "CXN_KILLED_OVER_RUN_RESIDUAL", + "CXN_KILLED_UNDER_RUN_RESIDUAL", + "CMD_KILLED_INVALID_STATSN_RCVD", + "CMD_KILLED_INVALID_R2T_RCVD", + "CMD_CXN_KILLED_LUN_INVALID", + "CMD_CXN_KILLED_ICD_INVALID", + "CMD_CXN_KILLED_ITT_INVALID", + "CMD_CXN_KILLED_SEQ_OUTOFORDER", + "CMD_CXN_KILLED_INVALID_DATASN_RCVD", + "CXN_INVALIDATE_NOTIFY", + "CXN_INVALIDATE_INDEX_NOTIFY", + "CMD_INVALIDATED_NOTIFY", + "UNSOL_HDR_NOTIFY", + "UNSOL_DATA_NOTIFY", + "UNSOL_DATA_DIGEST_ERROR_NOTIFY", + "DRIVERMSG_NOTIFY", + "CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN", + "SOL_CMD_KILLED_DIF_ERR", + "CXN_KILLED_SYN_RCVD", + "CXN_KILLED_IMM_DATA_RCVD" +}; + +static int beiscsi_slave_configure(struct scsi_device *sdev) +{ + blk_queue_max_segment_size(sdev->request_queue, 65536); + return 0; +} + +static int beiscsi_eh_abort(struct scsi_cmnd *sc) +{ + struct iscsi_cls_session *cls_session; + struct iscsi_task *aborted_task = (struct iscsi_task *)sc->SCp.ptr; + struct beiscsi_io_task *aborted_io_task; + struct iscsi_conn *conn; + struct beiscsi_conn *beiscsi_conn; + struct beiscsi_hba *phba; + struct iscsi_session *session; + struct invalidate_command_table *inv_tbl; + struct be_dma_mem nonemb_cmd; + unsigned int cid, tag, num_invalidate; + int rc; + + cls_session = starget_to_session(scsi_target(sc->device)); + session = cls_session->dd_data; + + spin_lock_bh(&session->frwd_lock); + if (!aborted_task || !aborted_task->sc) { + /* we raced */ + spin_unlock_bh(&session->frwd_lock); + return SUCCESS; + } + + aborted_io_task = aborted_task->dd_data; + if (!aborted_io_task->scsi_cmnd) { + /* raced or invalid command */ + spin_unlock_bh(&session->frwd_lock); + return SUCCESS; + } + spin_unlock_bh(&session->frwd_lock); + /* Invalidate WRB Posted for this Task */ + AMAP_SET_BITS(struct amap_iscsi_wrb, invld, + aborted_io_task->pwrb_handle->pwrb, + 1); + + conn = aborted_task->conn; + beiscsi_conn = conn->dd_data; + phba = beiscsi_conn->phba; + + /* invalidate iocb */ + cid = beiscsi_conn->beiscsi_conn_cid; + inv_tbl = phba->inv_tbl; + memset(inv_tbl, 0x0, sizeof(*inv_tbl)); + inv_tbl->cid = cid; + inv_tbl->icd = aborted_io_task->psgl_handle->sgl_index; + num_invalidate = 1; + nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev, + sizeof(struct invalidate_commands_params_in), + &nonemb_cmd.dma); + if (nonemb_cmd.va == NULL) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH, + "BM_%d : Failed to allocate memory for" + "mgmt_invalidate_icds\n"); + return FAILED; + } + nonemb_cmd.size = sizeof(struct invalidate_commands_params_in); + + tag = mgmt_invalidate_icds(phba, inv_tbl, num_invalidate, + cid, &nonemb_cmd); + if (!tag) { + beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH, + "BM_%d : mgmt_invalidate_icds could not be" + "submitted\n"); + pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, + nonemb_cmd.va, nonemb_cmd.dma); + + return FAILED; + } + + rc = beiscsi_mccq_compl(phba, tag, NULL, &nonemb_cmd); + if (rc != -EBUSY) + pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, + nonemb_cmd.va, nonemb_cmd.dma); + + return iscsi_eh_abort(sc); +} + +static int beiscsi_eh_device_reset(struct scsi_cmnd *sc) +{ + struct iscsi_task *abrt_task; + struct beiscsi_io_task *abrt_io_task; + struct iscsi_conn *conn; + struct beiscsi_conn *beiscsi_conn; + struct beiscsi_hba *phba; + struct iscsi_session *session; + struct iscsi_cls_session *cls_session; + struct invalidate_command_table *inv_tbl; + struct be_dma_mem nonemb_cmd; + unsigned int cid, tag, i, num_invalidate; + int rc; + + /* invalidate iocbs */ + cls_session = starget_to_session(scsi_target(sc->device)); + session = cls_session->dd_data; + spin_lock_bh(&session->frwd_lock); + if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN) { + spin_unlock_bh(&session->frwd_lock); + return FAILED; + } + conn = session->leadconn; + beiscsi_conn = conn->dd_data; + phba = beiscsi_conn->phba; + cid = beiscsi_conn->beiscsi_conn_cid; + inv_tbl = phba->inv_tbl; + memset(inv_tbl, 0x0, sizeof(*inv_tbl) * BE2_CMDS_PER_CXN); + num_invalidate = 0; + for (i = 0; i < conn->session->cmds_max; i++) { + abrt_task = conn->session->cmds[i]; + abrt_io_task = abrt_task->dd_data; + if (!abrt_task->sc || abrt_task->state == ISCSI_TASK_FREE) + continue; + + if (sc->device->lun != abrt_task->sc->device->lun) + continue; + + /* Invalidate WRB Posted for this Task */ + AMAP_SET_BITS(struct amap_iscsi_wrb, invld, + abrt_io_task->pwrb_handle->pwrb, + 1); + + inv_tbl->cid = cid; + inv_tbl->icd = abrt_io_task->psgl_handle->sgl_index; + num_invalidate++; + inv_tbl++; + } + spin_unlock_bh(&session->frwd_lock); + inv_tbl = phba->inv_tbl; + + nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev, + sizeof(struct invalidate_commands_params_in), + &nonemb_cmd.dma); + if (nonemb_cmd.va == NULL) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH, + "BM_%d : Failed to allocate memory for" + "mgmt_invalidate_icds\n"); + return FAILED; + } + nonemb_cmd.size = sizeof(struct invalidate_commands_params_in); + memset(nonemb_cmd.va, 0, nonemb_cmd.size); + tag = mgmt_invalidate_icds(phba, inv_tbl, num_invalidate, + cid, &nonemb_cmd); + if (!tag) { + beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH, + "BM_%d : mgmt_invalidate_icds could not be" + " submitted\n"); + pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, + nonemb_cmd.va, nonemb_cmd.dma); + return FAILED; + } + + rc = beiscsi_mccq_compl(phba, tag, NULL, &nonemb_cmd); + if (rc != -EBUSY) + pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, + nonemb_cmd.va, nonemb_cmd.dma); + return iscsi_eh_device_reset(sc); +} + +static ssize_t beiscsi_show_boot_tgt_info(void *data, int type, char *buf) +{ + struct beiscsi_hba *phba = data; + struct mgmt_session_info *boot_sess = &phba->boot_sess; + struct mgmt_conn_info *boot_conn = &boot_sess->conn_list[0]; + char *str = buf; + int rc; + + switch (type) { + case ISCSI_BOOT_TGT_NAME: + rc = sprintf(buf, "%.*s\n", + (int)strlen(boot_sess->target_name), + (char *)&boot_sess->target_name); + break; + case ISCSI_BOOT_TGT_IP_ADDR: + if (boot_conn->dest_ipaddr.ip_type == 0x1) + rc = sprintf(buf, "%pI4\n", + (char *)&boot_conn->dest_ipaddr.addr); + else + rc = sprintf(str, "%pI6\n", + (char *)&boot_conn->dest_ipaddr.addr); + break; + case ISCSI_BOOT_TGT_PORT: + rc = sprintf(str, "%d\n", boot_conn->dest_port); + break; + + case ISCSI_BOOT_TGT_CHAP_NAME: + rc = sprintf(str, "%.*s\n", + boot_conn->negotiated_login_options.auth_data.chap. + target_chap_name_length, + (char *)&boot_conn->negotiated_login_options. + auth_data.chap.target_chap_name); + break; + case ISCSI_BOOT_TGT_CHAP_SECRET: + rc = sprintf(str, "%.*s\n", + boot_conn->negotiated_login_options.auth_data.chap. + target_secret_length, + (char *)&boot_conn->negotiated_login_options. + auth_data.chap.target_secret); + break; + case ISCSI_BOOT_TGT_REV_CHAP_NAME: + rc = sprintf(str, "%.*s\n", + boot_conn->negotiated_login_options.auth_data.chap. + intr_chap_name_length, + (char *)&boot_conn->negotiated_login_options. + auth_data.chap.intr_chap_name); + break; + case ISCSI_BOOT_TGT_REV_CHAP_SECRET: + rc = sprintf(str, "%.*s\n", + boot_conn->negotiated_login_options.auth_data.chap. + intr_secret_length, + (char *)&boot_conn->negotiated_login_options. + auth_data.chap.intr_secret); + break; + case ISCSI_BOOT_TGT_FLAGS: + rc = sprintf(str, "2\n"); + break; + case ISCSI_BOOT_TGT_NIC_ASSOC: + rc = sprintf(str, "0\n"); + break; + default: + rc = -ENOSYS; + break; + } + return rc; +} + +static ssize_t beiscsi_show_boot_ini_info(void *data, int type, char *buf) +{ + struct beiscsi_hba *phba = data; + char *str = buf; + int rc; + + switch (type) { + case ISCSI_BOOT_INI_INITIATOR_NAME: + rc = sprintf(str, "%s\n", phba->boot_sess.initiator_iscsiname); + break; + default: + rc = -ENOSYS; + break; + } + return rc; +} + +static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf) +{ + struct beiscsi_hba *phba = data; + char *str = buf; + int rc; + + switch (type) { + case ISCSI_BOOT_ETH_FLAGS: + rc = sprintf(str, "2\n"); + break; + case ISCSI_BOOT_ETH_INDEX: + rc = sprintf(str, "0\n"); + break; + case ISCSI_BOOT_ETH_MAC: + rc = beiscsi_get_macaddr(str, phba); + break; + default: + rc = -ENOSYS; + break; + } + return rc; +} + + +static umode_t beiscsi_tgt_get_attr_visibility(void *data, int type) +{ + umode_t rc; + + switch (type) { + case ISCSI_BOOT_TGT_NAME: + case ISCSI_BOOT_TGT_IP_ADDR: + case ISCSI_BOOT_TGT_PORT: + case ISCSI_BOOT_TGT_CHAP_NAME: + case ISCSI_BOOT_TGT_CHAP_SECRET: + case ISCSI_BOOT_TGT_REV_CHAP_NAME: + case ISCSI_BOOT_TGT_REV_CHAP_SECRET: + case ISCSI_BOOT_TGT_NIC_ASSOC: + case ISCSI_BOOT_TGT_FLAGS: + rc = S_IRUGO; + break; + default: + rc = 0; + break; + } + return rc; +} + +static umode_t beiscsi_ini_get_attr_visibility(void *data, int type) +{ + umode_t rc; + + switch (type) { + case ISCSI_BOOT_INI_INITIATOR_NAME: + rc = S_IRUGO; + break; + default: + rc = 0; + break; + } + return rc; +} + + +static umode_t beiscsi_eth_get_attr_visibility(void *data, int type) +{ + umode_t rc; + + switch (type) { + case ISCSI_BOOT_ETH_FLAGS: + case ISCSI_BOOT_ETH_MAC: + case ISCSI_BOOT_ETH_INDEX: + rc = S_IRUGO; + break; + default: + rc = 0; + break; + } + return rc; +} + +/*------------------- PCI Driver operations and data ----------------- */ +static const struct pci_device_id beiscsi_pci_id_table[] = { + { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) }, + { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) }, + { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) }, + { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) }, + { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) }, + { PCI_DEVICE(ELX_VENDOR_ID, OC_SKH_ID1) }, + { 0 } +}; +MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table); + + +static struct scsi_host_template beiscsi_sht = { + .module = THIS_MODULE, + .name = "Avago Technologies 10Gbe open-iscsi Initiator Driver", + .proc_name = DRV_NAME, + .queuecommand = iscsi_queuecommand, + .change_queue_depth = scsi_change_queue_depth, + .slave_configure = beiscsi_slave_configure, + .target_alloc = iscsi_target_alloc, + .eh_abort_handler = beiscsi_eh_abort, + .eh_device_reset_handler = beiscsi_eh_device_reset, + .eh_target_reset_handler = iscsi_eh_session_reset, + .shost_attrs = beiscsi_attrs, + .sg_tablesize = BEISCSI_SGLIST_ELEMENTS, + .can_queue = BE2_IO_DEPTH, + .this_id = -1, + .max_sectors = BEISCSI_MAX_SECTORS, + .cmd_per_lun = BEISCSI_CMD_PER_LUN, + .use_clustering = ENABLE_CLUSTERING, + .vendor_id = SCSI_NL_VID_TYPE_PCI | BE_VENDOR_ID, + .track_queue_depth = 1, +}; + +static struct scsi_transport_template *beiscsi_scsi_transport; + +static struct beiscsi_hba *beiscsi_hba_alloc(struct pci_dev *pcidev) +{ + struct beiscsi_hba *phba; + struct Scsi_Host *shost; + + shost = iscsi_host_alloc(&beiscsi_sht, sizeof(*phba), 0); + if (!shost) { + dev_err(&pcidev->dev, + "beiscsi_hba_alloc - iscsi_host_alloc failed\n"); + return NULL; + } + shost->max_id = BE2_MAX_SESSIONS; + shost->max_channel = 0; + shost->max_cmd_len = BEISCSI_MAX_CMD_LEN; + shost->max_lun = BEISCSI_NUM_MAX_LUN; + shost->transportt = beiscsi_scsi_transport; + phba = iscsi_host_priv(shost); + memset(phba, 0, sizeof(*phba)); + phba->shost = shost; + phba->pcidev = pci_dev_get(pcidev); + pci_set_drvdata(pcidev, phba); + phba->interface_handle = 0xFFFFFFFF; + + return phba; +} + +static void beiscsi_unmap_pci_function(struct beiscsi_hba *phba) +{ + if (phba->csr_va) { + iounmap(phba->csr_va); + phba->csr_va = NULL; + } + if (phba->db_va) { + iounmap(phba->db_va); + phba->db_va = NULL; + } + if (phba->pci_va) { + iounmap(phba->pci_va); + phba->pci_va = NULL; + } +} + +static int beiscsi_map_pci_bars(struct beiscsi_hba *phba, + struct pci_dev *pcidev) +{ + u8 __iomem *addr; + int pcicfg_reg; + + addr = ioremap_nocache(pci_resource_start(pcidev, 2), + pci_resource_len(pcidev, 2)); + if (addr == NULL) + return -ENOMEM; + phba->ctrl.csr = addr; + phba->csr_va = addr; + phba->csr_pa.u.a64.address = pci_resource_start(pcidev, 2); + + addr = ioremap_nocache(pci_resource_start(pcidev, 4), 128 * 1024); + if (addr == NULL) + goto pci_map_err; + phba->ctrl.db = addr; + phba->db_va = addr; + phba->db_pa.u.a64.address = pci_resource_start(pcidev, 4); + + if (phba->generation == BE_GEN2) + pcicfg_reg = 1; + else + pcicfg_reg = 0; + + addr = ioremap_nocache(pci_resource_start(pcidev, pcicfg_reg), + pci_resource_len(pcidev, pcicfg_reg)); + + if (addr == NULL) + goto pci_map_err; + phba->ctrl.pcicfg = addr; + phba->pci_va = addr; + phba->pci_pa.u.a64.address = pci_resource_start(pcidev, pcicfg_reg); + return 0; + +pci_map_err: + beiscsi_unmap_pci_function(phba); + return -ENOMEM; +} + +static int beiscsi_enable_pci(struct pci_dev *pcidev) +{ + int ret; + + ret = pci_enable_device(pcidev); + if (ret) { + dev_err(&pcidev->dev, + "beiscsi_enable_pci - enable device failed\n"); + return ret; + } + + pci_set_master(pcidev); + ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64)); + if (ret) { + ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32)); + if (ret) { + dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n"); + pci_disable_device(pcidev); + return ret; + } else { + ret = pci_set_consistent_dma_mask(pcidev, + DMA_BIT_MASK(32)); + } + } else { + ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64)); + if (ret) { + dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n"); + pci_disable_device(pcidev); + return ret; + } + } + return 0; +} + +static int be_ctrl_init(struct beiscsi_hba *phba, struct pci_dev *pdev) +{ + struct be_ctrl_info *ctrl = &phba->ctrl; + struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced; + struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem; + int status = 0; + + ctrl->pdev = pdev; + status = beiscsi_map_pci_bars(phba, pdev); + if (status) + return status; + mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16; + mbox_mem_alloc->va = pci_alloc_consistent(pdev, + mbox_mem_alloc->size, + &mbox_mem_alloc->dma); + if (!mbox_mem_alloc->va) { + beiscsi_unmap_pci_function(phba); + return -ENOMEM; + } + + mbox_mem_align->size = sizeof(struct be_mcc_mailbox); + mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16); + mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16); + memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox)); + spin_lock_init(&ctrl->mbox_lock); + spin_lock_init(&phba->ctrl.mcc_lock); + spin_lock_init(&phba->ctrl.mcc_cq_lock); + + return status; +} + +/** + * beiscsi_get_params()- Set the config paramters + * @phba: ptr device priv structure + **/ +static void beiscsi_get_params(struct beiscsi_hba *phba) +{ + uint32_t total_cid_count = 0; + uint32_t total_icd_count = 0; + uint8_t ulp_num = 0; + + total_cid_count = BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP0) + + BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP1); + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + uint32_t align_mask = 0; + uint32_t icd_post_per_page = 0; + uint32_t icd_count_unavailable = 0; + uint32_t icd_start = 0, icd_count = 0; + uint32_t icd_start_align = 0, icd_count_align = 0; + + if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) { + icd_start = phba->fw_config.iscsi_icd_start[ulp_num]; + icd_count = phba->fw_config.iscsi_icd_count[ulp_num]; + + /* Get ICD count that can be posted on each page */ + icd_post_per_page = (PAGE_SIZE / (BE2_SGE * + sizeof(struct iscsi_sge))); + align_mask = (icd_post_per_page - 1); + + /* Check if icd_start is aligned ICD per page posting */ + if (icd_start % icd_post_per_page) { + icd_start_align = ((icd_start + + icd_post_per_page) & + ~(align_mask)); + phba->fw_config. + iscsi_icd_start[ulp_num] = + icd_start_align; + } + + icd_count_align = (icd_count & ~align_mask); + + /* ICD discarded in the process of alignment */ + if (icd_start_align) + icd_count_unavailable = ((icd_start_align - + icd_start) + + (icd_count - + icd_count_align)); + + /* Updated ICD count available */ + phba->fw_config.iscsi_icd_count[ulp_num] = (icd_count - + icd_count_unavailable); + + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : Aligned ICD values\n" + "\t ICD Start : %d\n" + "\t ICD Count : %d\n" + "\t ICD Discarded : %d\n", + phba->fw_config. + iscsi_icd_start[ulp_num], + phba->fw_config. + iscsi_icd_count[ulp_num], + icd_count_unavailable); + break; + } + } + + total_icd_count = phba->fw_config.iscsi_icd_count[ulp_num]; + phba->params.ios_per_ctrl = (total_icd_count - + (total_cid_count + + BE2_TMFS + BE2_NOPOUT_REQ)); + phba->params.cxns_per_ctrl = total_cid_count; + phba->params.asyncpdus_per_ctrl = total_cid_count; + phba->params.icds_per_ctrl = total_icd_count; + phba->params.num_sge_per_io = BE2_SGE; + phba->params.defpdu_hdr_sz = BE2_DEFPDU_HDR_SZ; + phba->params.defpdu_data_sz = BE2_DEFPDU_DATA_SZ; + phba->params.eq_timer = 64; + phba->params.num_eq_entries = 1024; + phba->params.num_cq_entries = 1024; + phba->params.wrbs_per_cxn = 256; +} + +static void hwi_ring_eq_db(struct beiscsi_hba *phba, + unsigned int id, unsigned int clr_interrupt, + unsigned int num_processed, + unsigned char rearm, unsigned char event) +{ + u32 val = 0; + + if (rearm) + val |= 1 << DB_EQ_REARM_SHIFT; + if (clr_interrupt) + val |= 1 << DB_EQ_CLR_SHIFT; + if (event) + val |= 1 << DB_EQ_EVNT_SHIFT; + + val |= num_processed << DB_EQ_NUM_POPPED_SHIFT; + /* Setting lower order EQ_ID Bits */ + val |= (id & DB_EQ_RING_ID_LOW_MASK); + + /* Setting Higher order EQ_ID Bits */ + val |= (((id >> DB_EQ_HIGH_FEILD_SHIFT) & + DB_EQ_RING_ID_HIGH_MASK) + << DB_EQ_HIGH_SET_SHIFT); + + iowrite32(val, phba->db_va + DB_EQ_OFFSET); +} + +/** + * be_isr_mcc - The isr routine of the driver. + * @irq: Not used + * @dev_id: Pointer to host adapter structure + */ +static irqreturn_t be_isr_mcc(int irq, void *dev_id) +{ + struct beiscsi_hba *phba; + struct be_eq_entry *eqe = NULL; + struct be_queue_info *eq; + struct be_queue_info *mcc; + unsigned int num_eq_processed; + struct be_eq_obj *pbe_eq; + unsigned long flags; + + pbe_eq = dev_id; + eq = &pbe_eq->q; + phba = pbe_eq->phba; + mcc = &phba->ctrl.mcc_obj.cq; + eqe = queue_tail_node(eq); + + num_eq_processed = 0; + + while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] + & EQE_VALID_MASK) { + if (((eqe->dw[offsetof(struct amap_eq_entry, + resource_id) / 32] & + EQE_RESID_MASK) >> 16) == mcc->id) { + spin_lock_irqsave(&phba->isr_lock, flags); + pbe_eq->todo_mcc_cq = true; + spin_unlock_irqrestore(&phba->isr_lock, flags); + } + AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0); + queue_tail_inc(eq); + eqe = queue_tail_node(eq); + num_eq_processed++; + } + if (pbe_eq->todo_mcc_cq) + queue_work(phba->wq, &pbe_eq->work_cqs); + if (num_eq_processed) + hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 1, 1); + + return IRQ_HANDLED; +} + +/** + * be_isr_msix - The isr routine of the driver. + * @irq: Not used + * @dev_id: Pointer to host adapter structure + */ +static irqreturn_t be_isr_msix(int irq, void *dev_id) +{ + struct beiscsi_hba *phba; + struct be_eq_entry *eqe = NULL; + struct be_queue_info *eq; + struct be_queue_info *cq; + unsigned int num_eq_processed; + struct be_eq_obj *pbe_eq; + + pbe_eq = dev_id; + eq = &pbe_eq->q; + cq = pbe_eq->cq; + eqe = queue_tail_node(eq); + + phba = pbe_eq->phba; + num_eq_processed = 0; + while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] + & EQE_VALID_MASK) { + if (!blk_iopoll_sched_prep(&pbe_eq->iopoll)) + blk_iopoll_sched(&pbe_eq->iopoll); + + AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0); + queue_tail_inc(eq); + eqe = queue_tail_node(eq); + num_eq_processed++; + } + + if (num_eq_processed) + hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 0, 1); + + return IRQ_HANDLED; +} + +/** + * be_isr - The isr routine of the driver. + * @irq: Not used + * @dev_id: Pointer to host adapter structure + */ +static irqreturn_t be_isr(int irq, void *dev_id) +{ + struct beiscsi_hba *phba; + struct hwi_controller *phwi_ctrlr; + struct hwi_context_memory *phwi_context; + struct be_eq_entry *eqe = NULL; + struct be_queue_info *eq; + struct be_queue_info *mcc; + unsigned long flags, index; + unsigned int num_mcceq_processed, num_ioeq_processed; + struct be_ctrl_info *ctrl; + struct be_eq_obj *pbe_eq; + int isr; + + phba = dev_id; + ctrl = &phba->ctrl; + isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET + + (PCI_FUNC(ctrl->pdev->devfn) * CEV_ISR_SIZE)); + if (!isr) + return IRQ_NONE; + + phwi_ctrlr = phba->phwi_ctrlr; + phwi_context = phwi_ctrlr->phwi_ctxt; + pbe_eq = &phwi_context->be_eq[0]; + + eq = &phwi_context->be_eq[0].q; + mcc = &phba->ctrl.mcc_obj.cq; + index = 0; + eqe = queue_tail_node(eq); + + num_ioeq_processed = 0; + num_mcceq_processed = 0; + while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] + & EQE_VALID_MASK) { + if (((eqe->dw[offsetof(struct amap_eq_entry, + resource_id) / 32] & + EQE_RESID_MASK) >> 16) == mcc->id) { + spin_lock_irqsave(&phba->isr_lock, flags); + pbe_eq->todo_mcc_cq = true; + spin_unlock_irqrestore(&phba->isr_lock, flags); + num_mcceq_processed++; + } else { + if (!blk_iopoll_sched_prep(&pbe_eq->iopoll)) + blk_iopoll_sched(&pbe_eq->iopoll); + num_ioeq_processed++; + } + AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0); + queue_tail_inc(eq); + eqe = queue_tail_node(eq); + } + if (num_ioeq_processed || num_mcceq_processed) { + if (pbe_eq->todo_mcc_cq) + queue_work(phba->wq, &pbe_eq->work_cqs); + + if ((num_mcceq_processed) && (!num_ioeq_processed)) + hwi_ring_eq_db(phba, eq->id, 0, + (num_ioeq_processed + + num_mcceq_processed) , 1, 1); + else + hwi_ring_eq_db(phba, eq->id, 0, + (num_ioeq_processed + + num_mcceq_processed), 0, 1); + + return IRQ_HANDLED; + } else + return IRQ_NONE; +} + +static int beiscsi_init_irqs(struct beiscsi_hba *phba) +{ + struct pci_dev *pcidev = phba->pcidev; + struct hwi_controller *phwi_ctrlr; + struct hwi_context_memory *phwi_context; + int ret, msix_vec, i, j; + + phwi_ctrlr = phba->phwi_ctrlr; + phwi_context = phwi_ctrlr->phwi_ctxt; + + if (phba->msix_enabled) { + for (i = 0; i < phba->num_cpus; i++) { + phba->msi_name[i] = kzalloc(BEISCSI_MSI_NAME, + GFP_KERNEL); + if (!phba->msi_name[i]) { + ret = -ENOMEM; + goto free_msix_irqs; + } + + sprintf(phba->msi_name[i], "beiscsi_%02x_%02x", + phba->shost->host_no, i); + msix_vec = phba->msix_entries[i].vector; + ret = request_irq(msix_vec, be_isr_msix, 0, + phba->msi_name[i], + &phwi_context->be_eq[i]); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_init_irqs-Failed to" + "register msix for i = %d\n", + i); + kfree(phba->msi_name[i]); + goto free_msix_irqs; + } + } + phba->msi_name[i] = kzalloc(BEISCSI_MSI_NAME, GFP_KERNEL); + if (!phba->msi_name[i]) { + ret = -ENOMEM; + goto free_msix_irqs; + } + sprintf(phba->msi_name[i], "beiscsi_mcc_%02x", + phba->shost->host_no); + msix_vec = phba->msix_entries[i].vector; + ret = request_irq(msix_vec, be_isr_mcc, 0, phba->msi_name[i], + &phwi_context->be_eq[i]); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT , + "BM_%d : beiscsi_init_irqs-" + "Failed to register beiscsi_msix_mcc\n"); + kfree(phba->msi_name[i]); + goto free_msix_irqs; + } + + } else { + ret = request_irq(pcidev->irq, be_isr, IRQF_SHARED, + "beiscsi", phba); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_init_irqs-" + "Failed to register irq\\n"); + return ret; + } + } + return 0; +free_msix_irqs: + for (j = i - 1; j >= 0; j--) { + kfree(phba->msi_name[j]); + msix_vec = phba->msix_entries[j].vector; + free_irq(msix_vec, &phwi_context->be_eq[j]); + } + return ret; +} + +void hwi_ring_cq_db(struct beiscsi_hba *phba, + unsigned int id, unsigned int num_processed, + unsigned char rearm, unsigned char event) +{ + u32 val = 0; + + if (rearm) + val |= 1 << DB_CQ_REARM_SHIFT; + + val |= num_processed << DB_CQ_NUM_POPPED_SHIFT; + + /* Setting lower order CQ_ID Bits */ + val |= (id & DB_CQ_RING_ID_LOW_MASK); + + /* Setting Higher order CQ_ID Bits */ + val |= (((id >> DB_CQ_HIGH_FEILD_SHIFT) & + DB_CQ_RING_ID_HIGH_MASK) + << DB_CQ_HIGH_SET_SHIFT); + + iowrite32(val, phba->db_va + DB_CQ_OFFSET); +} + +static unsigned int +beiscsi_process_async_pdu(struct beiscsi_conn *beiscsi_conn, + struct beiscsi_hba *phba, + struct pdu_base *ppdu, + unsigned long pdu_len, + void *pbuffer, unsigned long buf_len) +{ + struct iscsi_conn *conn = beiscsi_conn->conn; + struct iscsi_session *session = conn->session; + struct iscsi_task *task; + struct beiscsi_io_task *io_task; + struct iscsi_hdr *login_hdr; + + switch (ppdu->dw[offsetof(struct amap_pdu_base, opcode) / 32] & + PDUBASE_OPCODE_MASK) { + case ISCSI_OP_NOOP_IN: + pbuffer = NULL; + buf_len = 0; + break; + case ISCSI_OP_ASYNC_EVENT: + break; + case ISCSI_OP_REJECT: + WARN_ON(!pbuffer); + WARN_ON(!(buf_len == 48)); + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO, + "BM_%d : In ISCSI_OP_REJECT\n"); + break; + case ISCSI_OP_LOGIN_RSP: + case ISCSI_OP_TEXT_RSP: + task = conn->login_task; + io_task = task->dd_data; + login_hdr = (struct iscsi_hdr *)ppdu; + login_hdr->itt = io_task->libiscsi_itt; + break; + default: + beiscsi_log(phba, KERN_WARNING, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : Unrecognized opcode 0x%x in async msg\n", + (ppdu-> + dw[offsetof(struct amap_pdu_base, opcode) / 32] + & PDUBASE_OPCODE_MASK)); + return 1; + } + + spin_lock_bh(&session->back_lock); + __iscsi_complete_pdu(conn, (struct iscsi_hdr *)ppdu, pbuffer, buf_len); + spin_unlock_bh(&session->back_lock); + return 0; +} + +static struct sgl_handle *alloc_io_sgl_handle(struct beiscsi_hba *phba) +{ + struct sgl_handle *psgl_handle; + + if (phba->io_sgl_hndl_avbl) { + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO, + "BM_%d : In alloc_io_sgl_handle," + " io_sgl_alloc_index=%d\n", + phba->io_sgl_alloc_index); + + psgl_handle = phba->io_sgl_hndl_base[phba-> + io_sgl_alloc_index]; + phba->io_sgl_hndl_base[phba->io_sgl_alloc_index] = NULL; + phba->io_sgl_hndl_avbl--; + if (phba->io_sgl_alloc_index == (phba->params. + ios_per_ctrl - 1)) + phba->io_sgl_alloc_index = 0; + else + phba->io_sgl_alloc_index++; + } else + psgl_handle = NULL; + return psgl_handle; +} + +static void +free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle) +{ + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO, + "BM_%d : In free_,io_sgl_free_index=%d\n", + phba->io_sgl_free_index); + + if (phba->io_sgl_hndl_base[phba->io_sgl_free_index]) { + /* + * this can happen if clean_task is called on a task that + * failed in xmit_task or alloc_pdu. + */ + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO, + "BM_%d : Double Free in IO SGL io_sgl_free_index=%d," + "value there=%p\n", phba->io_sgl_free_index, + phba->io_sgl_hndl_base + [phba->io_sgl_free_index]); + return; + } + phba->io_sgl_hndl_base[phba->io_sgl_free_index] = psgl_handle; + phba->io_sgl_hndl_avbl++; + if (phba->io_sgl_free_index == (phba->params.ios_per_ctrl - 1)) + phba->io_sgl_free_index = 0; + else + phba->io_sgl_free_index++; +} + +/** + * alloc_wrb_handle - To allocate a wrb handle + * @phba: The hba pointer + * @cid: The cid to use for allocation + * + * This happens under session_lock until submission to chip + */ +struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid) +{ + struct hwi_wrb_context *pwrb_context; + struct hwi_controller *phwi_ctrlr; + struct wrb_handle *pwrb_handle, *pwrb_handle_tmp; + uint16_t cri_index = BE_GET_CRI_FROM_CID(cid); + + phwi_ctrlr = phba->phwi_ctrlr; + pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; + if (pwrb_context->wrb_handles_available >= 2) { + pwrb_handle = pwrb_context->pwrb_handle_base[ + pwrb_context->alloc_index]; + pwrb_context->wrb_handles_available--; + if (pwrb_context->alloc_index == + (phba->params.wrbs_per_cxn - 1)) + pwrb_context->alloc_index = 0; + else + pwrb_context->alloc_index++; + pwrb_handle_tmp = pwrb_context->pwrb_handle_base[ + pwrb_context->alloc_index]; + pwrb_handle->nxt_wrb_index = pwrb_handle_tmp->wrb_index; + } else + pwrb_handle = NULL; + return pwrb_handle; +} + +/** + * free_wrb_handle - To free the wrb handle back to pool + * @phba: The hba pointer + * @pwrb_context: The context to free from + * @pwrb_handle: The wrb_handle to free + * + * This happens under session_lock until submission to chip + */ +static void +free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context, + struct wrb_handle *pwrb_handle) +{ + pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle; + pwrb_context->wrb_handles_available++; + if (pwrb_context->free_index == (phba->params.wrbs_per_cxn - 1)) + pwrb_context->free_index = 0; + else + pwrb_context->free_index++; + + beiscsi_log(phba, KERN_INFO, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : FREE WRB: pwrb_handle=%p free_index=0x%x" + "wrb_handles_available=%d\n", + pwrb_handle, pwrb_context->free_index, + pwrb_context->wrb_handles_available); +} + +static struct sgl_handle *alloc_mgmt_sgl_handle(struct beiscsi_hba *phba) +{ + struct sgl_handle *psgl_handle; + + if (phba->eh_sgl_hndl_avbl) { + psgl_handle = phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index]; + phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index] = NULL; + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, + "BM_%d : mgmt_sgl_alloc_index=%d=0x%x\n", + phba->eh_sgl_alloc_index, + phba->eh_sgl_alloc_index); + + phba->eh_sgl_hndl_avbl--; + if (phba->eh_sgl_alloc_index == + (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - + 1)) + phba->eh_sgl_alloc_index = 0; + else + phba->eh_sgl_alloc_index++; + } else + psgl_handle = NULL; + return psgl_handle; +} + +void +free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle) +{ + + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, + "BM_%d : In free_mgmt_sgl_handle," + "eh_sgl_free_index=%d\n", + phba->eh_sgl_free_index); + + if (phba->eh_sgl_hndl_base[phba->eh_sgl_free_index]) { + /* + * this can happen if clean_task is called on a task that + * failed in xmit_task or alloc_pdu. + */ + beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG, + "BM_%d : Double Free in eh SGL ," + "eh_sgl_free_index=%d\n", + phba->eh_sgl_free_index); + return; + } + phba->eh_sgl_hndl_base[phba->eh_sgl_free_index] = psgl_handle; + phba->eh_sgl_hndl_avbl++; + if (phba->eh_sgl_free_index == + (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - 1)) + phba->eh_sgl_free_index = 0; + else + phba->eh_sgl_free_index++; +} + +static void +be_complete_io(struct beiscsi_conn *beiscsi_conn, + struct iscsi_task *task, + struct common_sol_cqe *csol_cqe) +{ + struct beiscsi_io_task *io_task = task->dd_data; + struct be_status_bhs *sts_bhs = + (struct be_status_bhs *)io_task->cmd_bhs; + struct iscsi_conn *conn = beiscsi_conn->conn; + unsigned char *sense; + u32 resid = 0, exp_cmdsn, max_cmdsn; + u8 rsp, status, flags; + + exp_cmdsn = csol_cqe->exp_cmdsn; + max_cmdsn = (csol_cqe->exp_cmdsn + + csol_cqe->cmd_wnd - 1); + rsp = csol_cqe->i_resp; + status = csol_cqe->i_sts; + flags = csol_cqe->i_flags; + resid = csol_cqe->res_cnt; + + if (!task->sc) { + if (io_task->scsi_cmnd) { + scsi_dma_unmap(io_task->scsi_cmnd); + io_task->scsi_cmnd = NULL; + } + + return; + } + task->sc->result = (DID_OK << 16) | status; + if (rsp != ISCSI_STATUS_CMD_COMPLETED) { + task->sc->result = DID_ERROR << 16; + goto unmap; + } + + /* bidi not initially supported */ + if (flags & (ISCSI_FLAG_CMD_UNDERFLOW | ISCSI_FLAG_CMD_OVERFLOW)) { + if (!status && (flags & ISCSI_FLAG_CMD_OVERFLOW)) + task->sc->result = DID_ERROR << 16; + + if (flags & ISCSI_FLAG_CMD_UNDERFLOW) { + scsi_set_resid(task->sc, resid); + if (!status && (scsi_bufflen(task->sc) - resid < + task->sc->underflow)) + task->sc->result = DID_ERROR << 16; + } + } + + if (status == SAM_STAT_CHECK_CONDITION) { + u16 sense_len; + unsigned short *slen = (unsigned short *)sts_bhs->sense_info; + + sense = sts_bhs->sense_info + sizeof(unsigned short); + sense_len = be16_to_cpu(*slen); + memcpy(task->sc->sense_buffer, sense, + min_t(u16, sense_len, SCSI_SENSE_BUFFERSIZE)); + } + + if (io_task->cmd_bhs->iscsi_hdr.flags & ISCSI_FLAG_CMD_READ) + conn->rxdata_octets += resid; +unmap: + scsi_dma_unmap(io_task->scsi_cmnd); + io_task->scsi_cmnd = NULL; + iscsi_complete_scsi_task(task, exp_cmdsn, max_cmdsn); +} + +static void +be_complete_logout(struct beiscsi_conn *beiscsi_conn, + struct iscsi_task *task, + struct common_sol_cqe *csol_cqe) +{ + struct iscsi_logout_rsp *hdr; + struct beiscsi_io_task *io_task = task->dd_data; + struct iscsi_conn *conn = beiscsi_conn->conn; + + hdr = (struct iscsi_logout_rsp *)task->hdr; + hdr->opcode = ISCSI_OP_LOGOUT_RSP; + hdr->t2wait = 5; + hdr->t2retain = 0; + hdr->flags = csol_cqe->i_flags; + hdr->response = csol_cqe->i_resp; + hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn); + hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn + + csol_cqe->cmd_wnd - 1); + + hdr->dlength[0] = 0; + hdr->dlength[1] = 0; + hdr->dlength[2] = 0; + hdr->hlength = 0; + hdr->itt = io_task->libiscsi_itt; + __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); +} + +static void +be_complete_tmf(struct beiscsi_conn *beiscsi_conn, + struct iscsi_task *task, + struct common_sol_cqe *csol_cqe) +{ + struct iscsi_tm_rsp *hdr; + struct iscsi_conn *conn = beiscsi_conn->conn; + struct beiscsi_io_task *io_task = task->dd_data; + + hdr = (struct iscsi_tm_rsp *)task->hdr; + hdr->opcode = ISCSI_OP_SCSI_TMFUNC_RSP; + hdr->flags = csol_cqe->i_flags; + hdr->response = csol_cqe->i_resp; + hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn); + hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn + + csol_cqe->cmd_wnd - 1); + + hdr->itt = io_task->libiscsi_itt; + __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); +} + +static void +hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn, + struct beiscsi_hba *phba, struct sol_cqe *psol) +{ + struct hwi_wrb_context *pwrb_context; + struct wrb_handle *pwrb_handle = NULL; + struct hwi_controller *phwi_ctrlr; + struct iscsi_task *task; + struct beiscsi_io_task *io_task; + uint16_t wrb_index, cid, cri_index; + + phwi_ctrlr = phba->phwi_ctrlr; + if (is_chip_be2_be3r(phba)) { + wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe, + wrb_idx, psol); + cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe, + cid, psol); + } else { + wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2, + wrb_idx, psol); + cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2, + cid, psol); + } + + cri_index = BE_GET_CRI_FROM_CID(cid); + pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; + pwrb_handle = pwrb_context->pwrb_handle_basestd[wrb_index]; + task = pwrb_handle->pio_handle; + + io_task = task->dd_data; + memset(io_task->pwrb_handle->pwrb, 0, sizeof(struct iscsi_wrb)); + iscsi_put_task(task); +} + +static void +be_complete_nopin_resp(struct beiscsi_conn *beiscsi_conn, + struct iscsi_task *task, + struct common_sol_cqe *csol_cqe) +{ + struct iscsi_nopin *hdr; + struct iscsi_conn *conn = beiscsi_conn->conn; + struct beiscsi_io_task *io_task = task->dd_data; + + hdr = (struct iscsi_nopin *)task->hdr; + hdr->flags = csol_cqe->i_flags; + hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn); + hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn + + csol_cqe->cmd_wnd - 1); + + hdr->opcode = ISCSI_OP_NOOP_IN; + hdr->itt = io_task->libiscsi_itt; + __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); +} + +static void adapter_get_sol_cqe(struct beiscsi_hba *phba, + struct sol_cqe *psol, + struct common_sol_cqe *csol_cqe) +{ + if (is_chip_be2_be3r(phba)) { + csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe, + i_exp_cmd_sn, psol); + csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe, + i_res_cnt, psol); + csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe, + i_cmd_wnd, psol); + csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe, + wrb_index, psol); + csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe, + cid, psol); + csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe, + hw_sts, psol); + csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe, + i_resp, psol); + csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe, + i_sts, psol); + csol_cqe->i_flags = AMAP_GET_BITS(struct amap_sol_cqe, + i_flags, psol); + } else { + csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe_v2, + i_exp_cmd_sn, psol); + csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe_v2, + i_res_cnt, psol); + csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe_v2, + wrb_index, psol); + csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe_v2, + cid, psol); + csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2, + hw_sts, psol); + csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe_v2, + i_cmd_wnd, psol); + if (AMAP_GET_BITS(struct amap_sol_cqe_v2, + cmd_cmpl, psol)) + csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2, + i_sts, psol); + else + csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe_v2, + i_sts, psol); + if (AMAP_GET_BITS(struct amap_sol_cqe_v2, + u, psol)) + csol_cqe->i_flags = ISCSI_FLAG_CMD_UNDERFLOW; + + if (AMAP_GET_BITS(struct amap_sol_cqe_v2, + o, psol)) + csol_cqe->i_flags |= ISCSI_FLAG_CMD_OVERFLOW; + } +} + + +static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn, + struct beiscsi_hba *phba, struct sol_cqe *psol) +{ + struct hwi_wrb_context *pwrb_context; + struct wrb_handle *pwrb_handle; + struct iscsi_wrb *pwrb = NULL; + struct hwi_controller *phwi_ctrlr; + struct iscsi_task *task; + unsigned int type; + struct iscsi_conn *conn = beiscsi_conn->conn; + struct iscsi_session *session = conn->session; + struct common_sol_cqe csol_cqe = {0}; + uint16_t cri_index = 0; + + phwi_ctrlr = phba->phwi_ctrlr; + + /* Copy the elements to a common structure */ + adapter_get_sol_cqe(phba, psol, &csol_cqe); + + cri_index = BE_GET_CRI_FROM_CID(csol_cqe.cid); + pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; + + pwrb_handle = pwrb_context->pwrb_handle_basestd[ + csol_cqe.wrb_index]; + + task = pwrb_handle->pio_handle; + pwrb = pwrb_handle->pwrb; + type = ((struct beiscsi_io_task *)task->dd_data)->wrb_type; + + spin_lock_bh(&session->back_lock); + switch (type) { + case HWH_TYPE_IO: + case HWH_TYPE_IO_RD: + if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == + ISCSI_OP_NOOP_OUT) + be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe); + else + be_complete_io(beiscsi_conn, task, &csol_cqe); + break; + + case HWH_TYPE_LOGOUT: + if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT) + be_complete_logout(beiscsi_conn, task, &csol_cqe); + else + be_complete_tmf(beiscsi_conn, task, &csol_cqe); + break; + + case HWH_TYPE_LOGIN: + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO, + "BM_%d :\t\t No HWH_TYPE_LOGIN Expected in" + " hwi_complete_cmd- Solicited path\n"); + break; + + case HWH_TYPE_NOP: + be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe); + break; + + default: + beiscsi_log(phba, KERN_WARNING, + BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO, + "BM_%d : In hwi_complete_cmd, unknown type = %d" + "wrb_index 0x%x CID 0x%x\n", type, + csol_cqe.wrb_index, + csol_cqe.cid); + break; + } + + spin_unlock_bh(&session->back_lock); +} + +static struct list_head *hwi_get_async_busy_list(struct hwi_async_pdu_context + *pasync_ctx, unsigned int is_header, + unsigned int host_write_ptr) +{ + if (is_header) + return &pasync_ctx->async_entry[host_write_ptr]. + header_busy_list; + else + return &pasync_ctx->async_entry[host_write_ptr].data_busy_list; +} + +static struct async_pdu_handle * +hwi_get_async_handle(struct beiscsi_hba *phba, + struct beiscsi_conn *beiscsi_conn, + struct hwi_async_pdu_context *pasync_ctx, + struct i_t_dpdu_cqe *pdpdu_cqe, unsigned int *pcq_index) +{ + struct be_bus_address phys_addr; + struct list_head *pbusy_list; + struct async_pdu_handle *pasync_handle = NULL; + unsigned char is_header = 0; + unsigned int index, dpl; + + if (is_chip_be2_be3r(phba)) { + dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe, + dpl, pdpdu_cqe); + index = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe, + index, pdpdu_cqe); + } else { + dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2, + dpl, pdpdu_cqe); + index = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2, + index, pdpdu_cqe); + } + + phys_addr.u.a32.address_lo = + (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, + db_addr_lo) / 32] - dpl); + phys_addr.u.a32.address_hi = + pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, + db_addr_hi) / 32]; + + phys_addr.u.a64.address = + *((unsigned long long *)(&phys_addr.u.a64.address)); + + switch (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, code) / 32] + & PDUCQE_CODE_MASK) { + case UNSOL_HDR_NOTIFY: + is_header = 1; + + pbusy_list = hwi_get_async_busy_list(pasync_ctx, + is_header, index); + break; + case UNSOL_DATA_NOTIFY: + pbusy_list = hwi_get_async_busy_list(pasync_ctx, + is_header, index); + break; + default: + pbusy_list = NULL; + beiscsi_log(phba, KERN_WARNING, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : Unexpected code=%d\n", + pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, + code) / 32] & PDUCQE_CODE_MASK); + return NULL; + } + + WARN_ON(list_empty(pbusy_list)); + list_for_each_entry(pasync_handle, pbusy_list, link) { + if (pasync_handle->pa.u.a64.address == phys_addr.u.a64.address) + break; + } + + WARN_ON(!pasync_handle); + + pasync_handle->cri = BE_GET_ASYNC_CRI_FROM_CID( + beiscsi_conn->beiscsi_conn_cid); + pasync_handle->is_header = is_header; + pasync_handle->buffer_len = dpl; + *pcq_index = index; + + return pasync_handle; +} + +static unsigned int +hwi_update_async_writables(struct beiscsi_hba *phba, + struct hwi_async_pdu_context *pasync_ctx, + unsigned int is_header, unsigned int cq_index) +{ + struct list_head *pbusy_list; + struct async_pdu_handle *pasync_handle; + unsigned int num_entries, writables = 0; + unsigned int *pep_read_ptr, *pwritables; + + num_entries = pasync_ctx->num_entries; + if (is_header) { + pep_read_ptr = &pasync_ctx->async_header.ep_read_ptr; + pwritables = &pasync_ctx->async_header.writables; + } else { + pep_read_ptr = &pasync_ctx->async_data.ep_read_ptr; + pwritables = &pasync_ctx->async_data.writables; + } + + while ((*pep_read_ptr) != cq_index) { + (*pep_read_ptr)++; + *pep_read_ptr = (*pep_read_ptr) % num_entries; + + pbusy_list = hwi_get_async_busy_list(pasync_ctx, is_header, + *pep_read_ptr); + if (writables == 0) + WARN_ON(list_empty(pbusy_list)); + + if (!list_empty(pbusy_list)) { + pasync_handle = list_entry(pbusy_list->next, + struct async_pdu_handle, + link); + WARN_ON(!pasync_handle); + pasync_handle->consumed = 1; + } + + writables++; + } + + if (!writables) { + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO, + "BM_%d : Duplicate notification received - index 0x%x!!\n", + cq_index); + WARN_ON(1); + } + + *pwritables = *pwritables + writables; + return 0; +} + +static void hwi_free_async_msg(struct beiscsi_hba *phba, + struct hwi_async_pdu_context *pasync_ctx, + unsigned int cri) +{ + struct async_pdu_handle *pasync_handle, *tmp_handle; + struct list_head *plist; + + plist = &pasync_ctx->async_entry[cri].wait_queue.list; + list_for_each_entry_safe(pasync_handle, tmp_handle, plist, link) { + list_del(&pasync_handle->link); + + if (pasync_handle->is_header) { + list_add_tail(&pasync_handle->link, + &pasync_ctx->async_header.free_list); + pasync_ctx->async_header.free_entries++; + } else { + list_add_tail(&pasync_handle->link, + &pasync_ctx->async_data.free_list); + pasync_ctx->async_data.free_entries++; + } + } + + INIT_LIST_HEAD(&pasync_ctx->async_entry[cri].wait_queue.list); + pasync_ctx->async_entry[cri].wait_queue.hdr_received = 0; + pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0; +} + +static struct phys_addr * +hwi_get_ring_address(struct hwi_async_pdu_context *pasync_ctx, + unsigned int is_header, unsigned int host_write_ptr) +{ + struct phys_addr *pasync_sge = NULL; + + if (is_header) + pasync_sge = pasync_ctx->async_header.ring_base; + else + pasync_sge = pasync_ctx->async_data.ring_base; + + return pasync_sge + host_write_ptr; +} + +static void hwi_post_async_buffers(struct beiscsi_hba *phba, + unsigned int is_header, uint8_t ulp_num) +{ + struct hwi_controller *phwi_ctrlr; + struct hwi_async_pdu_context *pasync_ctx; + struct async_pdu_handle *pasync_handle; + struct list_head *pfree_link, *pbusy_list; + struct phys_addr *pasync_sge; + unsigned int ring_id, num_entries; + unsigned int host_write_num, doorbell_offset; + unsigned int writables; + unsigned int i = 0; + u32 doorbell = 0; + + phwi_ctrlr = phba->phwi_ctrlr; + pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, ulp_num); + num_entries = pasync_ctx->num_entries; + + if (is_header) { + writables = min(pasync_ctx->async_header.writables, + pasync_ctx->async_header.free_entries); + pfree_link = pasync_ctx->async_header.free_list.next; + host_write_num = pasync_ctx->async_header.host_write_ptr; + ring_id = phwi_ctrlr->default_pdu_hdr[ulp_num].id; + doorbell_offset = phwi_ctrlr->default_pdu_hdr[ulp_num]. + doorbell_offset; + } else { + writables = min(pasync_ctx->async_data.writables, + pasync_ctx->async_data.free_entries); + pfree_link = pasync_ctx->async_data.free_list.next; + host_write_num = pasync_ctx->async_data.host_write_ptr; + ring_id = phwi_ctrlr->default_pdu_data[ulp_num].id; + doorbell_offset = phwi_ctrlr->default_pdu_data[ulp_num]. + doorbell_offset; + } + + writables = (writables / 8) * 8; + if (writables) { + for (i = 0; i < writables; i++) { + pbusy_list = + hwi_get_async_busy_list(pasync_ctx, is_header, + host_write_num); + pasync_handle = + list_entry(pfree_link, struct async_pdu_handle, + link); + WARN_ON(!pasync_handle); + pasync_handle->consumed = 0; + + pfree_link = pfree_link->next; + + pasync_sge = hwi_get_ring_address(pasync_ctx, + is_header, host_write_num); + + pasync_sge->hi = pasync_handle->pa.u.a32.address_lo; + pasync_sge->lo = pasync_handle->pa.u.a32.address_hi; + + list_move(&pasync_handle->link, pbusy_list); + + host_write_num++; + host_write_num = host_write_num % num_entries; + } + + if (is_header) { + pasync_ctx->async_header.host_write_ptr = + host_write_num; + pasync_ctx->async_header.free_entries -= writables; + pasync_ctx->async_header.writables -= writables; + pasync_ctx->async_header.busy_entries += writables; + } else { + pasync_ctx->async_data.host_write_ptr = host_write_num; + pasync_ctx->async_data.free_entries -= writables; + pasync_ctx->async_data.writables -= writables; + pasync_ctx->async_data.busy_entries += writables; + } + + doorbell |= ring_id & DB_DEF_PDU_RING_ID_MASK; + doorbell |= 1 << DB_DEF_PDU_REARM_SHIFT; + doorbell |= 0 << DB_DEF_PDU_EVENT_SHIFT; + doorbell |= (writables & DB_DEF_PDU_CQPROC_MASK) + << DB_DEF_PDU_CQPROC_SHIFT; + + iowrite32(doorbell, phba->db_va + doorbell_offset); + } +} + +static void hwi_flush_default_pdu_buffer(struct beiscsi_hba *phba, + struct beiscsi_conn *beiscsi_conn, + struct i_t_dpdu_cqe *pdpdu_cqe) +{ + struct hwi_controller *phwi_ctrlr; + struct hwi_async_pdu_context *pasync_ctx; + struct async_pdu_handle *pasync_handle = NULL; + unsigned int cq_index = -1; + uint16_t cri_index = BE_GET_CRI_FROM_CID( + beiscsi_conn->beiscsi_conn_cid); + + phwi_ctrlr = phba->phwi_ctrlr; + pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, + BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, + cri_index)); + + pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx, + pdpdu_cqe, &cq_index); + BUG_ON(pasync_handle->is_header != 0); + if (pasync_handle->consumed == 0) + hwi_update_async_writables(phba, pasync_ctx, + pasync_handle->is_header, cq_index); + + hwi_free_async_msg(phba, pasync_ctx, pasync_handle->cri); + hwi_post_async_buffers(phba, pasync_handle->is_header, + BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, + cri_index)); +} + +static unsigned int +hwi_fwd_async_msg(struct beiscsi_conn *beiscsi_conn, + struct beiscsi_hba *phba, + struct hwi_async_pdu_context *pasync_ctx, unsigned short cri) +{ + struct list_head *plist; + struct async_pdu_handle *pasync_handle; + void *phdr = NULL; + unsigned int hdr_len = 0, buf_len = 0; + unsigned int status, index = 0, offset = 0; + void *pfirst_buffer = NULL; + unsigned int num_buf = 0; + + plist = &pasync_ctx->async_entry[cri].wait_queue.list; + + list_for_each_entry(pasync_handle, plist, link) { + if (index == 0) { + phdr = pasync_handle->pbuffer; + hdr_len = pasync_handle->buffer_len; + } else { + buf_len = pasync_handle->buffer_len; + if (!num_buf) { + pfirst_buffer = pasync_handle->pbuffer; + num_buf++; + } + memcpy(pfirst_buffer + offset, + pasync_handle->pbuffer, buf_len); + offset += buf_len; + } + index++; + } + + status = beiscsi_process_async_pdu(beiscsi_conn, phba, + phdr, hdr_len, pfirst_buffer, + offset); + + hwi_free_async_msg(phba, pasync_ctx, cri); + return 0; +} + +static unsigned int +hwi_gather_async_pdu(struct beiscsi_conn *beiscsi_conn, + struct beiscsi_hba *phba, + struct async_pdu_handle *pasync_handle) +{ + struct hwi_async_pdu_context *pasync_ctx; + struct hwi_controller *phwi_ctrlr; + unsigned int bytes_needed = 0, status = 0; + unsigned short cri = pasync_handle->cri; + struct pdu_base *ppdu; + + phwi_ctrlr = phba->phwi_ctrlr; + pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, + BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, + BE_GET_CRI_FROM_CID(beiscsi_conn-> + beiscsi_conn_cid))); + + list_del(&pasync_handle->link); + if (pasync_handle->is_header) { + pasync_ctx->async_header.busy_entries--; + if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) { + hwi_free_async_msg(phba, pasync_ctx, cri); + BUG(); + } + + pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0; + pasync_ctx->async_entry[cri].wait_queue.hdr_received = 1; + pasync_ctx->async_entry[cri].wait_queue.hdr_len = + (unsigned short)pasync_handle->buffer_len; + list_add_tail(&pasync_handle->link, + &pasync_ctx->async_entry[cri].wait_queue.list); + + ppdu = pasync_handle->pbuffer; + bytes_needed = ((((ppdu->dw[offsetof(struct amap_pdu_base, + data_len_hi) / 32] & PDUBASE_DATALENHI_MASK) << 8) & + 0xFFFF0000) | ((be16_to_cpu((ppdu-> + dw[offsetof(struct amap_pdu_base, data_len_lo) / 32] + & PDUBASE_DATALENLO_MASK) >> 16)) & 0x0000FFFF)); + + if (status == 0) { + pasync_ctx->async_entry[cri].wait_queue.bytes_needed = + bytes_needed; + + if (bytes_needed == 0) + status = hwi_fwd_async_msg(beiscsi_conn, phba, + pasync_ctx, cri); + } + } else { + pasync_ctx->async_data.busy_entries--; + if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) { + list_add_tail(&pasync_handle->link, + &pasync_ctx->async_entry[cri].wait_queue. + list); + pasync_ctx->async_entry[cri].wait_queue. + bytes_received += + (unsigned short)pasync_handle->buffer_len; + + if (pasync_ctx->async_entry[cri].wait_queue. + bytes_received >= + pasync_ctx->async_entry[cri].wait_queue. + bytes_needed) + status = hwi_fwd_async_msg(beiscsi_conn, phba, + pasync_ctx, cri); + } + } + return status; +} + +static void hwi_process_default_pdu_ring(struct beiscsi_conn *beiscsi_conn, + struct beiscsi_hba *phba, + struct i_t_dpdu_cqe *pdpdu_cqe) +{ + struct hwi_controller *phwi_ctrlr; + struct hwi_async_pdu_context *pasync_ctx; + struct async_pdu_handle *pasync_handle = NULL; + unsigned int cq_index = -1; + uint16_t cri_index = BE_GET_CRI_FROM_CID( + beiscsi_conn->beiscsi_conn_cid); + + phwi_ctrlr = phba->phwi_ctrlr; + pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, + BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, + cri_index)); + + pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx, + pdpdu_cqe, &cq_index); + + if (pasync_handle->consumed == 0) + hwi_update_async_writables(phba, pasync_ctx, + pasync_handle->is_header, cq_index); + + hwi_gather_async_pdu(beiscsi_conn, phba, pasync_handle); + hwi_post_async_buffers(phba, pasync_handle->is_header, + BEISCSI_GET_ULP_FROM_CRI( + phwi_ctrlr, cri_index)); +} + +static void beiscsi_process_mcc_isr(struct beiscsi_hba *phba) +{ + struct be_queue_info *mcc_cq; + struct be_mcc_compl *mcc_compl; + unsigned int num_processed = 0; + + mcc_cq = &phba->ctrl.mcc_obj.cq; + mcc_compl = queue_tail_node(mcc_cq); + mcc_compl->flags = le32_to_cpu(mcc_compl->flags); + while (mcc_compl->flags & CQE_FLAGS_VALID_MASK) { + + if (num_processed >= 32) { + hwi_ring_cq_db(phba, mcc_cq->id, + num_processed, 0, 0); + num_processed = 0; + } + if (mcc_compl->flags & CQE_FLAGS_ASYNC_MASK) { + /* Interpret flags as an async trailer */ + if (is_link_state_evt(mcc_compl->flags)) + /* Interpret compl as a async link evt */ + beiscsi_async_link_state_process(phba, + (struct be_async_event_link_state *) mcc_compl); + else + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_MBOX, + "BM_%d : Unsupported Async Event, flags" + " = 0x%08x\n", + mcc_compl->flags); + } else if (mcc_compl->flags & CQE_FLAGS_COMPLETED_MASK) { + be_mcc_compl_process_isr(&phba->ctrl, mcc_compl); + atomic_dec(&phba->ctrl.mcc_obj.q.used); + } + + mcc_compl->flags = 0; + queue_tail_inc(mcc_cq); + mcc_compl = queue_tail_node(mcc_cq); + mcc_compl->flags = le32_to_cpu(mcc_compl->flags); + num_processed++; + } + + if (num_processed > 0) + hwi_ring_cq_db(phba, mcc_cq->id, num_processed, 1, 0); + +} + +/** + * beiscsi_process_cq()- Process the Completion Queue + * @pbe_eq: Event Q on which the Completion has come + * + * return + * Number of Completion Entries processed. + **/ +unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq) +{ + struct be_queue_info *cq; + struct sol_cqe *sol; + struct dmsg_cqe *dmsg; + unsigned int num_processed = 0; + unsigned int tot_nump = 0; + unsigned short code = 0, cid = 0; + uint16_t cri_index = 0; + struct beiscsi_conn *beiscsi_conn; + struct beiscsi_endpoint *beiscsi_ep; + struct iscsi_endpoint *ep; + struct beiscsi_hba *phba; + + cq = pbe_eq->cq; + sol = queue_tail_node(cq); + phba = pbe_eq->phba; + + while (sol->dw[offsetof(struct amap_sol_cqe, valid) / 32] & + CQE_VALID_MASK) { + be_dws_le_to_cpu(sol, sizeof(struct sol_cqe)); + + code = (sol->dw[offsetof(struct amap_sol_cqe, code) / + 32] & CQE_CODE_MASK); + + /* Get the CID */ + if (is_chip_be2_be3r(phba)) { + cid = AMAP_GET_BITS(struct amap_sol_cqe, cid, sol); + } else { + if ((code == DRIVERMSG_NOTIFY) || + (code == UNSOL_HDR_NOTIFY) || + (code == UNSOL_DATA_NOTIFY)) + cid = AMAP_GET_BITS( + struct amap_i_t_dpdu_cqe_v2, + cid, sol); + else + cid = AMAP_GET_BITS(struct amap_sol_cqe_v2, + cid, sol); + } + + cri_index = BE_GET_CRI_FROM_CID(cid); + ep = phba->ep_array[cri_index]; + + if (ep == NULL) { + /* connection has already been freed + * just move on to next one + */ + beiscsi_log(phba, KERN_WARNING, + BEISCSI_LOG_INIT, + "BM_%d : proc cqe of disconn ep: cid %d\n", + cid); + goto proc_next_cqe; + } + + beiscsi_ep = ep->dd_data; + beiscsi_conn = beiscsi_ep->conn; + + if (num_processed >= 32) { + hwi_ring_cq_db(phba, cq->id, + num_processed, 0, 0); + tot_nump += num_processed; + num_processed = 0; + } + + switch (code) { + case SOL_CMD_COMPLETE: + hwi_complete_cmd(beiscsi_conn, phba, sol); + break; + case DRIVERMSG_NOTIFY: + beiscsi_log(phba, KERN_INFO, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : Received %s[%d] on CID : %d\n", + cqe_desc[code], code, cid); + + dmsg = (struct dmsg_cqe *)sol; + hwi_complete_drvr_msgs(beiscsi_conn, phba, sol); + break; + case UNSOL_HDR_NOTIFY: + beiscsi_log(phba, KERN_INFO, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : Received %s[%d] on CID : %d\n", + cqe_desc[code], code, cid); + + spin_lock_bh(&phba->async_pdu_lock); + hwi_process_default_pdu_ring(beiscsi_conn, phba, + (struct i_t_dpdu_cqe *)sol); + spin_unlock_bh(&phba->async_pdu_lock); + break; + case UNSOL_DATA_NOTIFY: + beiscsi_log(phba, KERN_INFO, + BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO, + "BM_%d : Received %s[%d] on CID : %d\n", + cqe_desc[code], code, cid); + + spin_lock_bh(&phba->async_pdu_lock); + hwi_process_default_pdu_ring(beiscsi_conn, phba, + (struct i_t_dpdu_cqe *)sol); + spin_unlock_bh(&phba->async_pdu_lock); + break; + case CXN_INVALIDATE_INDEX_NOTIFY: + case CMD_INVALIDATED_NOTIFY: + case CXN_INVALIDATE_NOTIFY: + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : Ignoring %s[%d] on CID : %d\n", + cqe_desc[code], code, cid); + break; + case SOL_CMD_KILLED_DATA_DIGEST_ERR: + case CMD_KILLED_INVALID_STATSN_RCVD: + case CMD_KILLED_INVALID_R2T_RCVD: + case CMD_CXN_KILLED_LUN_INVALID: + case CMD_CXN_KILLED_ICD_INVALID: + case CMD_CXN_KILLED_ITT_INVALID: + case CMD_CXN_KILLED_SEQ_OUTOFORDER: + case CMD_CXN_KILLED_INVALID_DATASN_RCVD: + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO, + "BM_%d : Cmd Notification %s[%d] on CID : %d\n", + cqe_desc[code], code, cid); + break; + case UNSOL_DATA_DIGEST_ERROR_NOTIFY: + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : Dropping %s[%d] on DPDU ring on CID : %d\n", + cqe_desc[code], code, cid); + spin_lock_bh(&phba->async_pdu_lock); + hwi_flush_default_pdu_buffer(phba, beiscsi_conn, + (struct i_t_dpdu_cqe *) sol); + spin_unlock_bh(&phba->async_pdu_lock); + break; + case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL: + case CXN_KILLED_BURST_LEN_MISMATCH: + case CXN_KILLED_AHS_RCVD: + case CXN_KILLED_HDR_DIGEST_ERR: + case CXN_KILLED_UNKNOWN_HDR: + case CXN_KILLED_STALE_ITT_TTT_RCVD: + case CXN_KILLED_INVALID_ITT_TTT_RCVD: + case CXN_KILLED_TIMED_OUT: + case CXN_KILLED_FIN_RCVD: + case CXN_KILLED_RST_SENT: + case CXN_KILLED_RST_RCVD: + case CXN_KILLED_BAD_UNSOL_PDU_RCVD: + case CXN_KILLED_BAD_WRB_INDEX_ERROR: + case CXN_KILLED_OVER_RUN_RESIDUAL: + case CXN_KILLED_UNDER_RUN_RESIDUAL: + case CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN: + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : Event %s[%d] received on CID : %d\n", + cqe_desc[code], code, cid); + if (beiscsi_conn) + iscsi_conn_failure(beiscsi_conn->conn, + ISCSI_ERR_CONN_FAILED); + break; + default: + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : Invalid CQE Event Received Code : %d" + "CID 0x%x...\n", + code, cid); + break; + } + +proc_next_cqe: + AMAP_SET_BITS(struct amap_sol_cqe, valid, sol, 0); + queue_tail_inc(cq); + sol = queue_tail_node(cq); + num_processed++; + } + + if (num_processed > 0) { + tot_nump += num_processed; + hwi_ring_cq_db(phba, cq->id, num_processed, 1, 0); + } + return tot_nump; +} + +void beiscsi_process_all_cqs(struct work_struct *work) +{ + unsigned long flags; + struct hwi_controller *phwi_ctrlr; + struct hwi_context_memory *phwi_context; + struct beiscsi_hba *phba; + struct be_eq_obj *pbe_eq = + container_of(work, struct be_eq_obj, work_cqs); + + phba = pbe_eq->phba; + phwi_ctrlr = phba->phwi_ctrlr; + phwi_context = phwi_ctrlr->phwi_ctxt; + + if (pbe_eq->todo_mcc_cq) { + spin_lock_irqsave(&phba->isr_lock, flags); + pbe_eq->todo_mcc_cq = false; + spin_unlock_irqrestore(&phba->isr_lock, flags); + beiscsi_process_mcc_isr(phba); + } + + if (pbe_eq->todo_cq) { + spin_lock_irqsave(&phba->isr_lock, flags); + pbe_eq->todo_cq = false; + spin_unlock_irqrestore(&phba->isr_lock, flags); + beiscsi_process_cq(pbe_eq); + } + + /* rearm EQ for further interrupts */ + hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1); +} + +static int be_iopoll(struct blk_iopoll *iop, int budget) +{ + unsigned int ret; + struct beiscsi_hba *phba; + struct be_eq_obj *pbe_eq; + + pbe_eq = container_of(iop, struct be_eq_obj, iopoll); + ret = beiscsi_process_cq(pbe_eq); + pbe_eq->cq_count += ret; + if (ret < budget) { + phba = pbe_eq->phba; + blk_iopoll_complete(iop); + beiscsi_log(phba, KERN_INFO, + BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO, + "BM_%d : rearm pbe_eq->q.id =%d\n", + pbe_eq->q.id); + hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1); + } + return ret; +} + +static void +hwi_write_sgl_v2(struct iscsi_wrb *pwrb, struct scatterlist *sg, + unsigned int num_sg, struct beiscsi_io_task *io_task) +{ + struct iscsi_sge *psgl; + unsigned int sg_len, index; + unsigned int sge_len = 0; + unsigned long long addr; + struct scatterlist *l_sg; + unsigned int offset; + + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_lo, pwrb, + io_task->bhs_pa.u.a32.address_lo); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_hi, pwrb, + io_task->bhs_pa.u.a32.address_hi); + + l_sg = sg; + for (index = 0; (index < num_sg) && (index < 2); index++, + sg = sg_next(sg)) { + if (index == 0) { + sg_len = sg_dma_len(sg); + addr = (u64) sg_dma_address(sg); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge0_addr_lo, pwrb, + lower_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge0_addr_hi, pwrb, + upper_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge0_len, pwrb, + sg_len); + sge_len = sg_len; + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_r2t_offset, + pwrb, sge_len); + sg_len = sg_dma_len(sg); + addr = (u64) sg_dma_address(sg); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge1_addr_lo, pwrb, + lower_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge1_addr_hi, pwrb, + upper_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + sge1_len, pwrb, + sg_len); + } + } + psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag; + memset(psgl, 0, sizeof(*psgl) * BE2_SGE); + + AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2); + + AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, + io_task->bhs_pa.u.a32.address_hi); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, + io_task->bhs_pa.u.a32.address_lo); + + if (num_sg == 1) { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb, + 1); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb, + 0); + } else if (num_sg == 2) { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb, + 0); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb, + 1); + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb, + 0); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb, + 0); + } + + sg = l_sg; + psgl++; + psgl++; + offset = 0; + for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) { + sg_len = sg_dma_len(sg); + addr = (u64) sg_dma_address(sg); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, + lower_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, + upper_32_bits(addr)); + AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len); + AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset); + AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0); + offset += sg_len; + } + psgl--; + AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1); +} + +static void +hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg, + unsigned int num_sg, struct beiscsi_io_task *io_task) +{ + struct iscsi_sge *psgl; + unsigned int sg_len, index; + unsigned int sge_len = 0; + unsigned long long addr; + struct scatterlist *l_sg; + unsigned int offset; + + AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb, + io_task->bhs_pa.u.a32.address_lo); + AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb, + io_task->bhs_pa.u.a32.address_hi); + + l_sg = sg; + for (index = 0; (index < num_sg) && (index < 2); index++, + sg = sg_next(sg)) { + if (index == 0) { + sg_len = sg_dma_len(sg); + addr = (u64) sg_dma_address(sg); + AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb, + ((u32)(addr & 0xFFFFFFFF))); + AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb, + ((u32)(addr >> 32))); + AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb, + sg_len); + sge_len = sg_len; + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_r2t_offset, + pwrb, sge_len); + sg_len = sg_dma_len(sg); + addr = (u64) sg_dma_address(sg); + AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_lo, pwrb, + ((u32)(addr & 0xFFFFFFFF))); + AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_hi, pwrb, + ((u32)(addr >> 32))); + AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_len, pwrb, + sg_len); + } + } + psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag; + memset(psgl, 0, sizeof(*psgl) * BE2_SGE); + + AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2); + + AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, + io_task->bhs_pa.u.a32.address_hi); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, + io_task->bhs_pa.u.a32.address_lo); + + if (num_sg == 1) { + AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, + 1); + AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb, + 0); + } else if (num_sg == 2) { + AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, + 0); + AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb, + 1); + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, + 0); + AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb, + 0); + } + sg = l_sg; + psgl++; + psgl++; + offset = 0; + for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) { + sg_len = sg_dma_len(sg); + addr = (u64) sg_dma_address(sg); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, + (addr & 0xFFFFFFFF)); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, + (addr >> 32)); + AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len); + AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset); + AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0); + offset += sg_len; + } + psgl--; + AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1); +} + +/** + * hwi_write_buffer()- Populate the WRB with task info + * @pwrb: ptr to the WRB entry + * @task: iscsi task which is to be executed + **/ +static void hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task) +{ + struct iscsi_sge *psgl; + struct beiscsi_io_task *io_task = task->dd_data; + struct beiscsi_conn *beiscsi_conn = io_task->conn; + struct beiscsi_hba *phba = beiscsi_conn->phba; + uint8_t dsp_value = 0; + + io_task->bhs_len = sizeof(struct be_nonio_bhs) - 2; + AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb, + io_task->bhs_pa.u.a32.address_lo); + AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb, + io_task->bhs_pa.u.a32.address_hi); + + if (task->data) { + + /* Check for the data_count */ + dsp_value = (task->data_count) ? 1 : 0; + + if (is_chip_be2_be3r(phba)) + AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, + pwrb, dsp_value); + else + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, + pwrb, dsp_value); + + /* Map addr only if there is data_count */ + if (dsp_value) { + io_task->mtask_addr = pci_map_single(phba->pcidev, + task->data, + task->data_count, + PCI_DMA_TODEVICE); + io_task->mtask_data_count = task->data_count; + } else + io_task->mtask_addr = 0; + + AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb, + lower_32_bits(io_task->mtask_addr)); + AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb, + upper_32_bits(io_task->mtask_addr)); + AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb, + task->data_count); + + AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, 1); + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0); + io_task->mtask_addr = 0; + } + + psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag; + + AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len); + + AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, + io_task->bhs_pa.u.a32.address_hi); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, + io_task->bhs_pa.u.a32.address_lo); + if (task->data) { + psgl++; + AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, 0); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, 0); + AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0); + AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, 0); + AMAP_SET_BITS(struct amap_iscsi_sge, rsvd0, psgl, 0); + AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0); + + psgl++; + if (task->data) { + AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, + lower_32_bits(io_task->mtask_addr)); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, + upper_32_bits(io_task->mtask_addr)); + } + AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0x106); + } + AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1); +} + +/** + * beiscsi_find_mem_req()- Find mem needed + * @phba: ptr to HBA struct + **/ +static void beiscsi_find_mem_req(struct beiscsi_hba *phba) +{ + uint8_t mem_descr_index, ulp_num; + unsigned int num_cq_pages, num_async_pdu_buf_pages; + unsigned int num_async_pdu_data_pages, wrb_sz_per_cxn; + unsigned int num_async_pdu_buf_sgl_pages, num_async_pdu_data_sgl_pages; + + num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \ + sizeof(struct sol_cqe)); + + phba->params.hwi_ws_sz = sizeof(struct hwi_controller); + + phba->mem_req[ISCSI_MEM_GLOBAL_HEADER] = 2 * + BE_ISCSI_PDU_HEADER_SIZE; + phba->mem_req[HWI_MEM_ADDN_CONTEXT] = + sizeof(struct hwi_context_memory); + + + phba->mem_req[HWI_MEM_WRB] = sizeof(struct iscsi_wrb) + * (phba->params.wrbs_per_cxn) + * phba->params.cxns_per_ctrl; + wrb_sz_per_cxn = sizeof(struct wrb_handle) * + (phba->params.wrbs_per_cxn); + phba->mem_req[HWI_MEM_WRBH] = roundup_pow_of_two((wrb_sz_per_cxn) * + phba->params.cxns_per_ctrl); + + phba->mem_req[HWI_MEM_SGLH] = sizeof(struct sgl_handle) * + phba->params.icds_per_ctrl; + phba->mem_req[HWI_MEM_SGE] = sizeof(struct iscsi_sge) * + phba->params.num_sge_per_io * phba->params.icds_per_ctrl; + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) { + + num_async_pdu_buf_sgl_pages = + PAGES_REQUIRED(BEISCSI_GET_CID_COUNT( + phba, ulp_num) * + sizeof(struct phys_addr)); + + num_async_pdu_buf_pages = + PAGES_REQUIRED(BEISCSI_GET_CID_COUNT( + phba, ulp_num) * + phba->params.defpdu_hdr_sz); + + num_async_pdu_data_pages = + PAGES_REQUIRED(BEISCSI_GET_CID_COUNT( + phba, ulp_num) * + phba->params.defpdu_data_sz); + + num_async_pdu_data_sgl_pages = + PAGES_REQUIRED(BEISCSI_GET_CID_COUNT( + phba, ulp_num) * + sizeof(struct phys_addr)); + + mem_descr_index = (HWI_MEM_TEMPLATE_HDR_ULP0 + + (ulp_num * MEM_DESCR_OFFSET)); + phba->mem_req[mem_descr_index] = + BEISCSI_GET_CID_COUNT(phba, ulp_num) * + BEISCSI_TEMPLATE_HDR_PER_CXN_SIZE; + + mem_descr_index = (HWI_MEM_ASYNC_HEADER_BUF_ULP0 + + (ulp_num * MEM_DESCR_OFFSET)); + phba->mem_req[mem_descr_index] = + num_async_pdu_buf_pages * + PAGE_SIZE; + + mem_descr_index = (HWI_MEM_ASYNC_DATA_BUF_ULP0 + + (ulp_num * MEM_DESCR_OFFSET)); + phba->mem_req[mem_descr_index] = + num_async_pdu_data_pages * + PAGE_SIZE; + + mem_descr_index = (HWI_MEM_ASYNC_HEADER_RING_ULP0 + + (ulp_num * MEM_DESCR_OFFSET)); + phba->mem_req[mem_descr_index] = + num_async_pdu_buf_sgl_pages * + PAGE_SIZE; + + mem_descr_index = (HWI_MEM_ASYNC_DATA_RING_ULP0 + + (ulp_num * MEM_DESCR_OFFSET)); + phba->mem_req[mem_descr_index] = + num_async_pdu_data_sgl_pages * + PAGE_SIZE; + + mem_descr_index = (HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 + + (ulp_num * MEM_DESCR_OFFSET)); + phba->mem_req[mem_descr_index] = + BEISCSI_GET_CID_COUNT(phba, ulp_num) * + sizeof(struct async_pdu_handle); + + mem_descr_index = (HWI_MEM_ASYNC_DATA_HANDLE_ULP0 + + (ulp_num * MEM_DESCR_OFFSET)); + phba->mem_req[mem_descr_index] = + BEISCSI_GET_CID_COUNT(phba, ulp_num) * + sizeof(struct async_pdu_handle); + + mem_descr_index = (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 + + (ulp_num * MEM_DESCR_OFFSET)); + phba->mem_req[mem_descr_index] = + sizeof(struct hwi_async_pdu_context) + + (BEISCSI_GET_CID_COUNT(phba, ulp_num) * + sizeof(struct hwi_async_entry)); + } + } +} + +static int beiscsi_alloc_mem(struct beiscsi_hba *phba) +{ + dma_addr_t bus_add; + struct hwi_controller *phwi_ctrlr; + struct be_mem_descriptor *mem_descr; + struct mem_array *mem_arr, *mem_arr_orig; + unsigned int i, j, alloc_size, curr_alloc_size; + + phba->phwi_ctrlr = kzalloc(phba->params.hwi_ws_sz, GFP_KERNEL); + if (!phba->phwi_ctrlr) + return -ENOMEM; + + /* Allocate memory for wrb_context */ + phwi_ctrlr = phba->phwi_ctrlr; + phwi_ctrlr->wrb_context = kzalloc(sizeof(struct hwi_wrb_context) * + phba->params.cxns_per_ctrl, + GFP_KERNEL); + if (!phwi_ctrlr->wrb_context) + return -ENOMEM; + + phba->init_mem = kcalloc(SE_MEM_MAX, sizeof(*mem_descr), + GFP_KERNEL); + if (!phba->init_mem) { + kfree(phwi_ctrlr->wrb_context); + kfree(phba->phwi_ctrlr); + return -ENOMEM; + } + + mem_arr_orig = kmalloc(sizeof(*mem_arr_orig) * BEISCSI_MAX_FRAGS_INIT, + GFP_KERNEL); + if (!mem_arr_orig) { + kfree(phba->init_mem); + kfree(phwi_ctrlr->wrb_context); + kfree(phba->phwi_ctrlr); + return -ENOMEM; + } + + mem_descr = phba->init_mem; + for (i = 0; i < SE_MEM_MAX; i++) { + if (!phba->mem_req[i]) { + mem_descr->mem_array = NULL; + mem_descr++; + continue; + } + + j = 0; + mem_arr = mem_arr_orig; + alloc_size = phba->mem_req[i]; + memset(mem_arr, 0, sizeof(struct mem_array) * + BEISCSI_MAX_FRAGS_INIT); + curr_alloc_size = min(be_max_phys_size * 1024, alloc_size); + do { + mem_arr->virtual_address = pci_alloc_consistent( + phba->pcidev, + curr_alloc_size, + &bus_add); + if (!mem_arr->virtual_address) { + if (curr_alloc_size <= BE_MIN_MEM_SIZE) + goto free_mem; + if (curr_alloc_size - + rounddown_pow_of_two(curr_alloc_size)) + curr_alloc_size = rounddown_pow_of_two + (curr_alloc_size); + else + curr_alloc_size = curr_alloc_size / 2; + } else { + mem_arr->bus_address.u. + a64.address = (__u64) bus_add; + mem_arr->size = curr_alloc_size; + alloc_size -= curr_alloc_size; + curr_alloc_size = min(be_max_phys_size * + 1024, alloc_size); + j++; + mem_arr++; + } + } while (alloc_size); + mem_descr->num_elements = j; + mem_descr->size_in_bytes = phba->mem_req[i]; + mem_descr->mem_array = kmalloc(sizeof(*mem_arr) * j, + GFP_KERNEL); + if (!mem_descr->mem_array) + goto free_mem; + + memcpy(mem_descr->mem_array, mem_arr_orig, + sizeof(struct mem_array) * j); + mem_descr++; + } + kfree(mem_arr_orig); + return 0; +free_mem: + mem_descr->num_elements = j; + while ((i) || (j)) { + for (j = mem_descr->num_elements; j > 0; j--) { + pci_free_consistent(phba->pcidev, + mem_descr->mem_array[j - 1].size, + mem_descr->mem_array[j - 1]. + virtual_address, + (unsigned long)mem_descr-> + mem_array[j - 1]. + bus_address.u.a64.address); + } + if (i) { + i--; + kfree(mem_descr->mem_array); + mem_descr--; + } + } + kfree(mem_arr_orig); + kfree(phba->init_mem); + kfree(phba->phwi_ctrlr->wrb_context); + kfree(phba->phwi_ctrlr); + return -ENOMEM; +} + +static int beiscsi_get_memory(struct beiscsi_hba *phba) +{ + beiscsi_find_mem_req(phba); + return beiscsi_alloc_mem(phba); +} + +static void iscsi_init_global_templates(struct beiscsi_hba *phba) +{ + struct pdu_data_out *pdata_out; + struct pdu_nop_out *pnop_out; + struct be_mem_descriptor *mem_descr; + + mem_descr = phba->init_mem; + mem_descr += ISCSI_MEM_GLOBAL_HEADER; + pdata_out = + (struct pdu_data_out *)mem_descr->mem_array[0].virtual_address; + memset(pdata_out, 0, BE_ISCSI_PDU_HEADER_SIZE); + + AMAP_SET_BITS(struct amap_pdu_data_out, opcode, pdata_out, + IIOC_SCSI_DATA); + + pnop_out = + (struct pdu_nop_out *)((unsigned char *)mem_descr->mem_array[0]. + virtual_address + BE_ISCSI_PDU_HEADER_SIZE); + + memset(pnop_out, 0, BE_ISCSI_PDU_HEADER_SIZE); + AMAP_SET_BITS(struct amap_pdu_nop_out, ttt, pnop_out, 0xFFFFFFFF); + AMAP_SET_BITS(struct amap_pdu_nop_out, f_bit, pnop_out, 1); + AMAP_SET_BITS(struct amap_pdu_nop_out, i_bit, pnop_out, 0); +} + +static int beiscsi_init_wrb_handle(struct beiscsi_hba *phba) +{ + struct be_mem_descriptor *mem_descr_wrbh, *mem_descr_wrb; + struct hwi_context_memory *phwi_ctxt; + struct wrb_handle *pwrb_handle = NULL; + struct hwi_controller *phwi_ctrlr; + struct hwi_wrb_context *pwrb_context; + struct iscsi_wrb *pwrb = NULL; + unsigned int num_cxn_wrbh = 0; + unsigned int num_cxn_wrb = 0, j, idx = 0, index; + + mem_descr_wrbh = phba->init_mem; + mem_descr_wrbh += HWI_MEM_WRBH; + + mem_descr_wrb = phba->init_mem; + mem_descr_wrb += HWI_MEM_WRB; + phwi_ctrlr = phba->phwi_ctrlr; + + /* Allocate memory for WRBQ */ + phwi_ctxt = phwi_ctrlr->phwi_ctxt; + phwi_ctxt->be_wrbq = kzalloc(sizeof(struct be_queue_info) * + phba->params.cxns_per_ctrl, + GFP_KERNEL); + if (!phwi_ctxt->be_wrbq) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : WRBQ Mem Alloc Failed\n"); + return -ENOMEM; + } + + for (index = 0; index < phba->params.cxns_per_ctrl; index++) { + pwrb_context = &phwi_ctrlr->wrb_context[index]; + pwrb_context->pwrb_handle_base = + kzalloc(sizeof(struct wrb_handle *) * + phba->params.wrbs_per_cxn, GFP_KERNEL); + if (!pwrb_context->pwrb_handle_base) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Mem Alloc Failed. Failing to load\n"); + goto init_wrb_hndl_failed; + } + pwrb_context->pwrb_handle_basestd = + kzalloc(sizeof(struct wrb_handle *) * + phba->params.wrbs_per_cxn, GFP_KERNEL); + if (!pwrb_context->pwrb_handle_basestd) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Mem Alloc Failed. Failing to load\n"); + goto init_wrb_hndl_failed; + } + if (!num_cxn_wrbh) { + pwrb_handle = + mem_descr_wrbh->mem_array[idx].virtual_address; + num_cxn_wrbh = ((mem_descr_wrbh->mem_array[idx].size) / + ((sizeof(struct wrb_handle)) * + phba->params.wrbs_per_cxn)); + idx++; + } + pwrb_context->alloc_index = 0; + pwrb_context->wrb_handles_available = 0; + pwrb_context->free_index = 0; + + if (num_cxn_wrbh) { + for (j = 0; j < phba->params.wrbs_per_cxn; j++) { + pwrb_context->pwrb_handle_base[j] = pwrb_handle; + pwrb_context->pwrb_handle_basestd[j] = + pwrb_handle; + pwrb_context->wrb_handles_available++; + pwrb_handle->wrb_index = j; + pwrb_handle++; + } + num_cxn_wrbh--; + } + } + idx = 0; + for (index = 0; index < phba->params.cxns_per_ctrl; index++) { + pwrb_context = &phwi_ctrlr->wrb_context[index]; + if (!num_cxn_wrb) { + pwrb = mem_descr_wrb->mem_array[idx].virtual_address; + num_cxn_wrb = (mem_descr_wrb->mem_array[idx].size) / + ((sizeof(struct iscsi_wrb) * + phba->params.wrbs_per_cxn)); + idx++; + } + + if (num_cxn_wrb) { + for (j = 0; j < phba->params.wrbs_per_cxn; j++) { + pwrb_handle = pwrb_context->pwrb_handle_base[j]; + pwrb_handle->pwrb = pwrb; + pwrb++; + } + num_cxn_wrb--; + } + } + return 0; +init_wrb_hndl_failed: + for (j = index; j > 0; j--) { + pwrb_context = &phwi_ctrlr->wrb_context[j]; + kfree(pwrb_context->pwrb_handle_base); + kfree(pwrb_context->pwrb_handle_basestd); + } + return -ENOMEM; +} + +static int hwi_init_async_pdu_ctx(struct beiscsi_hba *phba) +{ + uint8_t ulp_num; + struct hwi_controller *phwi_ctrlr; + struct hba_parameters *p = &phba->params; + struct hwi_async_pdu_context *pasync_ctx; + struct async_pdu_handle *pasync_header_h, *pasync_data_h; + unsigned int index, idx, num_per_mem, num_async_data; + struct be_mem_descriptor *mem_descr; + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) { + + mem_descr = (struct be_mem_descriptor *)phba->init_mem; + mem_descr += (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 + + (ulp_num * MEM_DESCR_OFFSET)); + + phwi_ctrlr = phba->phwi_ctrlr; + phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num] = + (struct hwi_async_pdu_context *) + mem_descr->mem_array[0].virtual_address; + + pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num]; + memset(pasync_ctx, 0, sizeof(*pasync_ctx)); + + pasync_ctx->async_entry = + (struct hwi_async_entry *) + ((long unsigned int)pasync_ctx + + sizeof(struct hwi_async_pdu_context)); + + pasync_ctx->num_entries = BEISCSI_GET_CID_COUNT(phba, + ulp_num); + pasync_ctx->buffer_size = p->defpdu_hdr_sz; + + mem_descr = (struct be_mem_descriptor *)phba->init_mem; + mem_descr += HWI_MEM_ASYNC_HEADER_BUF_ULP0 + + (ulp_num * MEM_DESCR_OFFSET); + if (mem_descr->mem_array[0].virtual_address) { + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : hwi_init_async_pdu_ctx" + " HWI_MEM_ASYNC_HEADER_BUF_ULP%d va=%p\n", + ulp_num, + mem_descr->mem_array[0]. + virtual_address); + } else + beiscsi_log(phba, KERN_WARNING, + BEISCSI_LOG_INIT, + "BM_%d : No Virtual address for ULP : %d\n", + ulp_num); + + pasync_ctx->async_header.va_base = + mem_descr->mem_array[0].virtual_address; + + pasync_ctx->async_header.pa_base.u.a64.address = + mem_descr->mem_array[0]. + bus_address.u.a64.address; + + mem_descr = (struct be_mem_descriptor *)phba->init_mem; + mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 + + (ulp_num * MEM_DESCR_OFFSET); + if (mem_descr->mem_array[0].virtual_address) { + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : hwi_init_async_pdu_ctx" + " HWI_MEM_ASYNC_HEADER_RING_ULP%d va=%p\n", + ulp_num, + mem_descr->mem_array[0]. + virtual_address); + } else + beiscsi_log(phba, KERN_WARNING, + BEISCSI_LOG_INIT, + "BM_%d : No Virtual address for ULP : %d\n", + ulp_num); + + pasync_ctx->async_header.ring_base = + mem_descr->mem_array[0].virtual_address; + + mem_descr = (struct be_mem_descriptor *)phba->init_mem; + mem_descr += HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 + + (ulp_num * MEM_DESCR_OFFSET); + if (mem_descr->mem_array[0].virtual_address) { + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : hwi_init_async_pdu_ctx" + " HWI_MEM_ASYNC_HEADER_HANDLE_ULP%d va=%p\n", + ulp_num, + mem_descr->mem_array[0]. + virtual_address); + } else + beiscsi_log(phba, KERN_WARNING, + BEISCSI_LOG_INIT, + "BM_%d : No Virtual address for ULP : %d\n", + ulp_num); + + pasync_ctx->async_header.handle_base = + mem_descr->mem_array[0].virtual_address; + pasync_ctx->async_header.writables = 0; + INIT_LIST_HEAD(&pasync_ctx->async_header.free_list); + + mem_descr = (struct be_mem_descriptor *)phba->init_mem; + mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 + + (ulp_num * MEM_DESCR_OFFSET); + if (mem_descr->mem_array[0].virtual_address) { + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : hwi_init_async_pdu_ctx" + " HWI_MEM_ASYNC_DATA_RING_ULP%d va=%p\n", + ulp_num, + mem_descr->mem_array[0]. + virtual_address); + } else + beiscsi_log(phba, KERN_WARNING, + BEISCSI_LOG_INIT, + "BM_%d : No Virtual address for ULP : %d\n", + ulp_num); + + pasync_ctx->async_data.ring_base = + mem_descr->mem_array[0].virtual_address; + + mem_descr = (struct be_mem_descriptor *)phba->init_mem; + mem_descr += HWI_MEM_ASYNC_DATA_HANDLE_ULP0 + + (ulp_num * MEM_DESCR_OFFSET); + if (!mem_descr->mem_array[0].virtual_address) + beiscsi_log(phba, KERN_WARNING, + BEISCSI_LOG_INIT, + "BM_%d : No Virtual address for ULP : %d\n", + ulp_num); + + pasync_ctx->async_data.handle_base = + mem_descr->mem_array[0].virtual_address; + pasync_ctx->async_data.writables = 0; + INIT_LIST_HEAD(&pasync_ctx->async_data.free_list); + + pasync_header_h = + (struct async_pdu_handle *) + pasync_ctx->async_header.handle_base; + pasync_data_h = + (struct async_pdu_handle *) + pasync_ctx->async_data.handle_base; + + mem_descr = (struct be_mem_descriptor *)phba->init_mem; + mem_descr += HWI_MEM_ASYNC_DATA_BUF_ULP0 + + (ulp_num * MEM_DESCR_OFFSET); + if (mem_descr->mem_array[0].virtual_address) { + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : hwi_init_async_pdu_ctx" + " HWI_MEM_ASYNC_DATA_BUF_ULP%d va=%p\n", + ulp_num, + mem_descr->mem_array[0]. + virtual_address); + } else + beiscsi_log(phba, KERN_WARNING, + BEISCSI_LOG_INIT, + "BM_%d : No Virtual address for ULP : %d\n", + ulp_num); + + idx = 0; + pasync_ctx->async_data.va_base = + mem_descr->mem_array[idx].virtual_address; + pasync_ctx->async_data.pa_base.u.a64.address = + mem_descr->mem_array[idx]. + bus_address.u.a64.address; + + num_async_data = ((mem_descr->mem_array[idx].size) / + phba->params.defpdu_data_sz); + num_per_mem = 0; + + for (index = 0; index < BEISCSI_GET_CID_COUNT + (phba, ulp_num); index++) { + pasync_header_h->cri = -1; + pasync_header_h->index = (char)index; + INIT_LIST_HEAD(&pasync_header_h->link); + pasync_header_h->pbuffer = + (void *)((unsigned long) + (pasync_ctx-> + async_header.va_base) + + (p->defpdu_hdr_sz * index)); + + pasync_header_h->pa.u.a64.address = + pasync_ctx->async_header.pa_base.u.a64. + address + (p->defpdu_hdr_sz * index); + + list_add_tail(&pasync_header_h->link, + &pasync_ctx->async_header. + free_list); + pasync_header_h++; + pasync_ctx->async_header.free_entries++; + pasync_ctx->async_header.writables++; + + INIT_LIST_HEAD(&pasync_ctx->async_entry[index]. + wait_queue.list); + INIT_LIST_HEAD(&pasync_ctx->async_entry[index]. + header_busy_list); + pasync_data_h->cri = -1; + pasync_data_h->index = (char)index; + INIT_LIST_HEAD(&pasync_data_h->link); + + if (!num_async_data) { + num_per_mem = 0; + idx++; + pasync_ctx->async_data.va_base = + mem_descr->mem_array[idx]. + virtual_address; + pasync_ctx->async_data.pa_base.u. + a64.address = + mem_descr->mem_array[idx]. + bus_address.u.a64.address; + num_async_data = + ((mem_descr->mem_array[idx]. + size) / + phba->params.defpdu_data_sz); + } + pasync_data_h->pbuffer = + (void *)((unsigned long) + (pasync_ctx->async_data.va_base) + + (p->defpdu_data_sz * num_per_mem)); + + pasync_data_h->pa.u.a64.address = + pasync_ctx->async_data.pa_base.u.a64. + address + (p->defpdu_data_sz * + num_per_mem); + num_per_mem++; + num_async_data--; + + list_add_tail(&pasync_data_h->link, + &pasync_ctx->async_data. + free_list); + pasync_data_h++; + pasync_ctx->async_data.free_entries++; + pasync_ctx->async_data.writables++; + + INIT_LIST_HEAD(&pasync_ctx->async_entry[index]. + data_busy_list); + } + + pasync_ctx->async_header.host_write_ptr = 0; + pasync_ctx->async_header.ep_read_ptr = -1; + pasync_ctx->async_data.host_write_ptr = 0; + pasync_ctx->async_data.ep_read_ptr = -1; + } + } + + return 0; +} + +static int +be_sgl_create_contiguous(void *virtual_address, + u64 physical_address, u32 length, + struct be_dma_mem *sgl) +{ + WARN_ON(!virtual_address); + WARN_ON(!physical_address); + WARN_ON(!length > 0); + WARN_ON(!sgl); + + sgl->va = virtual_address; + sgl->dma = (unsigned long)physical_address; + sgl->size = length; + + return 0; +} + +static void be_sgl_destroy_contiguous(struct be_dma_mem *sgl) +{ + memset(sgl, 0, sizeof(*sgl)); +} + +static void +hwi_build_be_sgl_arr(struct beiscsi_hba *phba, + struct mem_array *pmem, struct be_dma_mem *sgl) +{ + if (sgl->va) + be_sgl_destroy_contiguous(sgl); + + be_sgl_create_contiguous(pmem->virtual_address, + pmem->bus_address.u.a64.address, + pmem->size, sgl); +} + +static void +hwi_build_be_sgl_by_offset(struct beiscsi_hba *phba, + struct mem_array *pmem, struct be_dma_mem *sgl) +{ + if (sgl->va) + be_sgl_destroy_contiguous(sgl); + + be_sgl_create_contiguous((unsigned char *)pmem->virtual_address, + pmem->bus_address.u.a64.address, + pmem->size, sgl); +} + +static int be_fill_queue(struct be_queue_info *q, + u16 len, u16 entry_size, void *vaddress) +{ + struct be_dma_mem *mem = &q->dma_mem; + + memset(q, 0, sizeof(*q)); + q->len = len; + q->entry_size = entry_size; + mem->size = len * entry_size; + mem->va = vaddress; + if (!mem->va) + return -ENOMEM; + memset(mem->va, 0, mem->size); + return 0; +} + +static int beiscsi_create_eqs(struct beiscsi_hba *phba, + struct hwi_context_memory *phwi_context) +{ + unsigned int i, num_eq_pages; + int ret = 0, eq_for_mcc; + struct be_queue_info *eq; + struct be_dma_mem *mem; + void *eq_vaddress; + dma_addr_t paddr; + + num_eq_pages = PAGES_REQUIRED(phba->params.num_eq_entries * \ + sizeof(struct be_eq_entry)); + + if (phba->msix_enabled) + eq_for_mcc = 1; + else + eq_for_mcc = 0; + for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) { + eq = &phwi_context->be_eq[i].q; + mem = &eq->dma_mem; + phwi_context->be_eq[i].phba = phba; + eq_vaddress = pci_alloc_consistent(phba->pcidev, + num_eq_pages * PAGE_SIZE, + &paddr); + if (!eq_vaddress) + goto create_eq_error; + + mem->va = eq_vaddress; + ret = be_fill_queue(eq, phba->params.num_eq_entries, + sizeof(struct be_eq_entry), eq_vaddress); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : be_fill_queue Failed for EQ\n"); + goto create_eq_error; + } + + mem->dma = paddr; + ret = beiscsi_cmd_eq_create(&phba->ctrl, eq, + phwi_context->cur_eqd); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_cmd_eq_create" + "Failed for EQ\n"); + goto create_eq_error; + } + + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : eqid = %d\n", + phwi_context->be_eq[i].q.id); + } + return 0; +create_eq_error: + for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) { + eq = &phwi_context->be_eq[i].q; + mem = &eq->dma_mem; + if (mem->va) + pci_free_consistent(phba->pcidev, num_eq_pages + * PAGE_SIZE, + mem->va, mem->dma); + } + return ret; +} + +static int beiscsi_create_cqs(struct beiscsi_hba *phba, + struct hwi_context_memory *phwi_context) +{ + unsigned int i, num_cq_pages; + int ret = 0; + struct be_queue_info *cq, *eq; + struct be_dma_mem *mem; + struct be_eq_obj *pbe_eq; + void *cq_vaddress; + dma_addr_t paddr; + + num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \ + sizeof(struct sol_cqe)); + + for (i = 0; i < phba->num_cpus; i++) { + cq = &phwi_context->be_cq[i]; + eq = &phwi_context->be_eq[i].q; + pbe_eq = &phwi_context->be_eq[i]; + pbe_eq->cq = cq; + pbe_eq->phba = phba; + mem = &cq->dma_mem; + cq_vaddress = pci_alloc_consistent(phba->pcidev, + num_cq_pages * PAGE_SIZE, + &paddr); + if (!cq_vaddress) + goto create_cq_error; + ret = be_fill_queue(cq, phba->params.num_cq_entries, + sizeof(struct sol_cqe), cq_vaddress); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : be_fill_queue Failed " + "for ISCSI CQ\n"); + goto create_cq_error; + } + + mem->dma = paddr; + ret = beiscsi_cmd_cq_create(&phba->ctrl, cq, eq, false, + false, 0); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_cmd_eq_create" + "Failed for ISCSI CQ\n"); + goto create_cq_error; + } + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : iscsi cq_id is %d for eq_id %d\n" + "iSCSI CQ CREATED\n", cq->id, eq->id); + } + return 0; + +create_cq_error: + for (i = 0; i < phba->num_cpus; i++) { + cq = &phwi_context->be_cq[i]; + mem = &cq->dma_mem; + if (mem->va) + pci_free_consistent(phba->pcidev, num_cq_pages + * PAGE_SIZE, + mem->va, mem->dma); + } + return ret; + +} + +static int +beiscsi_create_def_hdr(struct beiscsi_hba *phba, + struct hwi_context_memory *phwi_context, + struct hwi_controller *phwi_ctrlr, + unsigned int def_pdu_ring_sz, uint8_t ulp_num) +{ + unsigned int idx; + int ret; + struct be_queue_info *dq, *cq; + struct be_dma_mem *mem; + struct be_mem_descriptor *mem_descr; + void *dq_vaddress; + + idx = 0; + dq = &phwi_context->be_def_hdrq[ulp_num]; + cq = &phwi_context->be_cq[0]; + mem = &dq->dma_mem; + mem_descr = phba->init_mem; + mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 + + (ulp_num * MEM_DESCR_OFFSET); + dq_vaddress = mem_descr->mem_array[idx].virtual_address; + ret = be_fill_queue(dq, mem_descr->mem_array[0].size / + sizeof(struct phys_addr), + sizeof(struct phys_addr), dq_vaddress); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : be_fill_queue Failed for DEF PDU HDR on ULP : %d\n", + ulp_num); + + return ret; + } + mem->dma = (unsigned long)mem_descr->mem_array[idx]. + bus_address.u.a64.address; + ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dq, + def_pdu_ring_sz, + phba->params.defpdu_hdr_sz, + BEISCSI_DEFQ_HDR, ulp_num); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : be_cmd_create_default_pdu_queue Failed DEFHDR on ULP : %d\n", + ulp_num); + + return ret; + } + + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : iscsi hdr def pdu id for ULP : %d is %d\n", + ulp_num, + phwi_context->be_def_hdrq[ulp_num].id); + hwi_post_async_buffers(phba, BEISCSI_DEFQ_HDR, ulp_num); + return 0; +} + +static int +beiscsi_create_def_data(struct beiscsi_hba *phba, + struct hwi_context_memory *phwi_context, + struct hwi_controller *phwi_ctrlr, + unsigned int def_pdu_ring_sz, uint8_t ulp_num) +{ + unsigned int idx; + int ret; + struct be_queue_info *dataq, *cq; + struct be_dma_mem *mem; + struct be_mem_descriptor *mem_descr; + void *dq_vaddress; + + idx = 0; + dataq = &phwi_context->be_def_dataq[ulp_num]; + cq = &phwi_context->be_cq[0]; + mem = &dataq->dma_mem; + mem_descr = phba->init_mem; + mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 + + (ulp_num * MEM_DESCR_OFFSET); + dq_vaddress = mem_descr->mem_array[idx].virtual_address; + ret = be_fill_queue(dataq, mem_descr->mem_array[0].size / + sizeof(struct phys_addr), + sizeof(struct phys_addr), dq_vaddress); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : be_fill_queue Failed for DEF PDU " + "DATA on ULP : %d\n", + ulp_num); + + return ret; + } + mem->dma = (unsigned long)mem_descr->mem_array[idx]. + bus_address.u.a64.address; + ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dataq, + def_pdu_ring_sz, + phba->params.defpdu_data_sz, + BEISCSI_DEFQ_DATA, ulp_num); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d be_cmd_create_default_pdu_queue" + " Failed for DEF PDU DATA on ULP : %d\n", + ulp_num); + return ret; + } + + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : iscsi def data id on ULP : %d is %d\n", + ulp_num, + phwi_context->be_def_dataq[ulp_num].id); + + hwi_post_async_buffers(phba, BEISCSI_DEFQ_DATA, ulp_num); + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : DEFAULT PDU DATA RING CREATED" + "on ULP : %d\n", ulp_num); + + return 0; +} + + +static int +beiscsi_post_template_hdr(struct beiscsi_hba *phba) +{ + struct be_mem_descriptor *mem_descr; + struct mem_array *pm_arr; + struct be_dma_mem sgl; + int status, ulp_num; + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) { + mem_descr = (struct be_mem_descriptor *)phba->init_mem; + mem_descr += HWI_MEM_TEMPLATE_HDR_ULP0 + + (ulp_num * MEM_DESCR_OFFSET); + pm_arr = mem_descr->mem_array; + + hwi_build_be_sgl_arr(phba, pm_arr, &sgl); + status = be_cmd_iscsi_post_template_hdr( + &phba->ctrl, &sgl); + + if (status != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Post Template HDR Failed for" + "ULP_%d\n", ulp_num); + return status; + } + + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : Template HDR Pages Posted for" + "ULP_%d\n", ulp_num); + } + } + return 0; +} + +static int +beiscsi_post_pages(struct beiscsi_hba *phba) +{ + struct be_mem_descriptor *mem_descr; + struct mem_array *pm_arr; + unsigned int page_offset, i; + struct be_dma_mem sgl; + int status, ulp_num = 0; + + mem_descr = phba->init_mem; + mem_descr += HWI_MEM_SGE; + pm_arr = mem_descr->mem_array; + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) + if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) + break; + + page_offset = (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io * + phba->fw_config.iscsi_icd_start[ulp_num]) / PAGE_SIZE; + for (i = 0; i < mem_descr->num_elements; i++) { + hwi_build_be_sgl_arr(phba, pm_arr, &sgl); + status = be_cmd_iscsi_post_sgl_pages(&phba->ctrl, &sgl, + page_offset, + (pm_arr->size / PAGE_SIZE)); + page_offset += pm_arr->size / PAGE_SIZE; + if (status != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : post sgl failed.\n"); + return status; + } + pm_arr++; + } + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : POSTED PAGES\n"); + return 0; +} + +static void be_queue_free(struct beiscsi_hba *phba, struct be_queue_info *q) +{ + struct be_dma_mem *mem = &q->dma_mem; + if (mem->va) { + pci_free_consistent(phba->pcidev, mem->size, + mem->va, mem->dma); + mem->va = NULL; + } +} + +static int be_queue_alloc(struct beiscsi_hba *phba, struct be_queue_info *q, + u16 len, u16 entry_size) +{ + struct be_dma_mem *mem = &q->dma_mem; + + memset(q, 0, sizeof(*q)); + q->len = len; + q->entry_size = entry_size; + mem->size = len * entry_size; + mem->va = pci_zalloc_consistent(phba->pcidev, mem->size, &mem->dma); + if (!mem->va) + return -ENOMEM; + return 0; +} + +static int +beiscsi_create_wrb_rings(struct beiscsi_hba *phba, + struct hwi_context_memory *phwi_context, + struct hwi_controller *phwi_ctrlr) +{ + unsigned int wrb_mem_index, offset, size, num_wrb_rings; + u64 pa_addr_lo; + unsigned int idx, num, i, ulp_num; + struct mem_array *pwrb_arr; + void *wrb_vaddr; + struct be_dma_mem sgl; + struct be_mem_descriptor *mem_descr; + struct hwi_wrb_context *pwrb_context; + int status; + uint8_t ulp_count = 0, ulp_base_num = 0; + uint16_t cid_count_ulp[BEISCSI_ULP_COUNT] = { 0 }; + + idx = 0; + mem_descr = phba->init_mem; + mem_descr += HWI_MEM_WRB; + pwrb_arr = kmalloc(sizeof(*pwrb_arr) * phba->params.cxns_per_ctrl, + GFP_KERNEL); + if (!pwrb_arr) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Memory alloc failed in create wrb ring.\n"); + return -ENOMEM; + } + wrb_vaddr = mem_descr->mem_array[idx].virtual_address; + pa_addr_lo = mem_descr->mem_array[idx].bus_address.u.a64.address; + num_wrb_rings = mem_descr->mem_array[idx].size / + (phba->params.wrbs_per_cxn * sizeof(struct iscsi_wrb)); + + for (num = 0; num < phba->params.cxns_per_ctrl; num++) { + if (num_wrb_rings) { + pwrb_arr[num].virtual_address = wrb_vaddr; + pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo; + pwrb_arr[num].size = phba->params.wrbs_per_cxn * + sizeof(struct iscsi_wrb); + wrb_vaddr += pwrb_arr[num].size; + pa_addr_lo += pwrb_arr[num].size; + num_wrb_rings--; + } else { + idx++; + wrb_vaddr = mem_descr->mem_array[idx].virtual_address; + pa_addr_lo = mem_descr->mem_array[idx].\ + bus_address.u.a64.address; + num_wrb_rings = mem_descr->mem_array[idx].size / + (phba->params.wrbs_per_cxn * + sizeof(struct iscsi_wrb)); + pwrb_arr[num].virtual_address = wrb_vaddr; + pwrb_arr[num].bus_address.u.a64.address\ + = pa_addr_lo; + pwrb_arr[num].size = phba->params.wrbs_per_cxn * + sizeof(struct iscsi_wrb); + wrb_vaddr += pwrb_arr[num].size; + pa_addr_lo += pwrb_arr[num].size; + num_wrb_rings--; + } + } + + /* Get the ULP Count */ + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) + if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) { + ulp_count++; + ulp_base_num = ulp_num; + cid_count_ulp[ulp_num] = + BEISCSI_GET_CID_COUNT(phba, ulp_num); + } + + for (i = 0; i < phba->params.cxns_per_ctrl; i++) { + wrb_mem_index = 0; + offset = 0; + size = 0; + + if (ulp_count > 1) { + ulp_base_num = (ulp_base_num + 1) % BEISCSI_ULP_COUNT; + + if (!cid_count_ulp[ulp_base_num]) + ulp_base_num = (ulp_base_num + 1) % + BEISCSI_ULP_COUNT; + + cid_count_ulp[ulp_base_num]--; + } + + + hwi_build_be_sgl_by_offset(phba, &pwrb_arr[i], &sgl); + status = be_cmd_wrbq_create(&phba->ctrl, &sgl, + &phwi_context->be_wrbq[i], + &phwi_ctrlr->wrb_context[i], + ulp_base_num); + if (status != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : wrbq create failed."); + kfree(pwrb_arr); + return status; + } + pwrb_context = &phwi_ctrlr->wrb_context[i]; + BE_SET_CID_TO_CRI(i, pwrb_context->cid); + } + kfree(pwrb_arr); + return 0; +} + +static void free_wrb_handles(struct beiscsi_hba *phba) +{ + unsigned int index; + struct hwi_controller *phwi_ctrlr; + struct hwi_wrb_context *pwrb_context; + + phwi_ctrlr = phba->phwi_ctrlr; + for (index = 0; index < phba->params.cxns_per_ctrl; index++) { + pwrb_context = &phwi_ctrlr->wrb_context[index]; + kfree(pwrb_context->pwrb_handle_base); + kfree(pwrb_context->pwrb_handle_basestd); + } +} + +static void be_mcc_queues_destroy(struct beiscsi_hba *phba) +{ + struct be_queue_info *q; + struct be_ctrl_info *ctrl = &phba->ctrl; + + q = &phba->ctrl.mcc_obj.q; + if (q->created) + beiscsi_cmd_q_destroy(ctrl, q, QTYPE_MCCQ); + be_queue_free(phba, q); + + q = &phba->ctrl.mcc_obj.cq; + if (q->created) + beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ); + be_queue_free(phba, q); +} + +static void hwi_cleanup(struct beiscsi_hba *phba) +{ + struct be_queue_info *q; + struct be_ctrl_info *ctrl = &phba->ctrl; + struct hwi_controller *phwi_ctrlr; + struct hwi_context_memory *phwi_context; + struct hwi_async_pdu_context *pasync_ctx; + int i, eq_for_mcc, ulp_num; + + phwi_ctrlr = phba->phwi_ctrlr; + phwi_context = phwi_ctrlr->phwi_ctxt; + + be_cmd_iscsi_remove_template_hdr(ctrl); + + for (i = 0; i < phba->params.cxns_per_ctrl; i++) { + q = &phwi_context->be_wrbq[i]; + if (q->created) + beiscsi_cmd_q_destroy(ctrl, q, QTYPE_WRBQ); + } + kfree(phwi_context->be_wrbq); + free_wrb_handles(phba); + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) { + + q = &phwi_context->be_def_hdrq[ulp_num]; + if (q->created) + beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ); + + q = &phwi_context->be_def_dataq[ulp_num]; + if (q->created) + beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ); + + pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num]; + } + } + + beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL); + + for (i = 0; i < (phba->num_cpus); i++) { + q = &phwi_context->be_cq[i]; + if (q->created) + beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ); + } + + be_mcc_queues_destroy(phba); + if (phba->msix_enabled) + eq_for_mcc = 1; + else + eq_for_mcc = 0; + for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) { + q = &phwi_context->be_eq[i].q; + if (q->created) + beiscsi_cmd_q_destroy(ctrl, q, QTYPE_EQ); + } + be_cmd_fw_uninit(ctrl); +} + +static int be_mcc_queues_create(struct beiscsi_hba *phba, + struct hwi_context_memory *phwi_context) +{ + struct be_queue_info *q, *cq; + struct be_ctrl_info *ctrl = &phba->ctrl; + + /* Alloc MCC compl queue */ + cq = &phba->ctrl.mcc_obj.cq; + if (be_queue_alloc(phba, cq, MCC_CQ_LEN, + sizeof(struct be_mcc_compl))) + goto err; + /* Ask BE to create MCC compl queue; */ + if (phba->msix_enabled) { + if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq + [phba->num_cpus].q, false, true, 0)) + goto mcc_cq_free; + } else { + if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq[0].q, + false, true, 0)) + goto mcc_cq_free; + } + + /* Alloc MCC queue */ + q = &phba->ctrl.mcc_obj.q; + if (be_queue_alloc(phba, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb))) + goto mcc_cq_destroy; + + /* Ask BE to create MCC queue */ + if (beiscsi_cmd_mccq_create(phba, q, cq)) + goto mcc_q_free; + + return 0; + +mcc_q_free: + be_queue_free(phba, q); +mcc_cq_destroy: + beiscsi_cmd_q_destroy(ctrl, cq, QTYPE_CQ); +mcc_cq_free: + be_queue_free(phba, cq); +err: + return -ENOMEM; +} + +/** + * find_num_cpus()- Get the CPU online count + * @phba: ptr to priv structure + * + * CPU count is used for creating EQ. + **/ +static void find_num_cpus(struct beiscsi_hba *phba) +{ + int num_cpus = 0; + + num_cpus = num_online_cpus(); + + switch (phba->generation) { + case BE_GEN2: + case BE_GEN3: + phba->num_cpus = (num_cpus > BEISCSI_MAX_NUM_CPUS) ? + BEISCSI_MAX_NUM_CPUS : num_cpus; + break; + case BE_GEN4: + /* + * If eqid_count == 1 fall back to + * INTX mechanism + **/ + if (phba->fw_config.eqid_count == 1) { + enable_msix = 0; + phba->num_cpus = 1; + return; + } + + phba->num_cpus = + (num_cpus > (phba->fw_config.eqid_count - 1)) ? + (phba->fw_config.eqid_count - 1) : num_cpus; + break; + default: + phba->num_cpus = 1; + } +} + +static int hwi_init_port(struct beiscsi_hba *phba) +{ + struct hwi_controller *phwi_ctrlr; + struct hwi_context_memory *phwi_context; + unsigned int def_pdu_ring_sz; + struct be_ctrl_info *ctrl = &phba->ctrl; + int status, ulp_num; + + phwi_ctrlr = phba->phwi_ctrlr; + phwi_context = phwi_ctrlr->phwi_ctxt; + phwi_context->max_eqd = 128; + phwi_context->min_eqd = 0; + phwi_context->cur_eqd = 0; + be_cmd_fw_initialize(&phba->ctrl); + + status = beiscsi_create_eqs(phba, phwi_context); + if (status != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : EQ not created\n"); + goto error; + } + + status = be_mcc_queues_create(phba, phwi_context); + if (status != 0) + goto error; + + status = mgmt_check_supported_fw(ctrl, phba); + if (status != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Unsupported fw version\n"); + goto error; + } + + status = beiscsi_create_cqs(phba, phwi_context); + if (status != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : CQ not created\n"); + goto error; + } + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) { + + def_pdu_ring_sz = + BEISCSI_GET_CID_COUNT(phba, ulp_num) * + sizeof(struct phys_addr); + + status = beiscsi_create_def_hdr(phba, phwi_context, + phwi_ctrlr, + def_pdu_ring_sz, + ulp_num); + if (status != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Default Header not created for ULP : %d\n", + ulp_num); + goto error; + } + + status = beiscsi_create_def_data(phba, phwi_context, + phwi_ctrlr, + def_pdu_ring_sz, + ulp_num); + if (status != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Default Data not created for ULP : %d\n", + ulp_num); + goto error; + } + } + } + + status = beiscsi_post_pages(phba); + if (status != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Post SGL Pages Failed\n"); + goto error; + } + + status = beiscsi_post_template_hdr(phba); + if (status != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Template HDR Posting for CXN Failed\n"); + } + + status = beiscsi_create_wrb_rings(phba, phwi_context, phwi_ctrlr); + if (status != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : WRB Rings not created\n"); + goto error; + } + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + uint16_t async_arr_idx = 0; + + if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) { + uint16_t cri = 0; + struct hwi_async_pdu_context *pasync_ctx; + + pasync_ctx = HWI_GET_ASYNC_PDU_CTX( + phwi_ctrlr, ulp_num); + for (cri = 0; cri < + phba->params.cxns_per_ctrl; cri++) { + if (ulp_num == BEISCSI_GET_ULP_FROM_CRI + (phwi_ctrlr, cri)) + pasync_ctx->cid_to_async_cri_map[ + phwi_ctrlr->wrb_context[cri].cid] = + async_arr_idx++; + } + } + } + + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : hwi_init_port success\n"); + return 0; + +error: + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : hwi_init_port failed"); + hwi_cleanup(phba); + return status; +} + +static int hwi_init_controller(struct beiscsi_hba *phba) +{ + struct hwi_controller *phwi_ctrlr; + + phwi_ctrlr = phba->phwi_ctrlr; + if (1 == phba->init_mem[HWI_MEM_ADDN_CONTEXT].num_elements) { + phwi_ctrlr->phwi_ctxt = (struct hwi_context_memory *)phba-> + init_mem[HWI_MEM_ADDN_CONTEXT].mem_array[0].virtual_address; + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : phwi_ctrlr->phwi_ctxt=%p\n", + phwi_ctrlr->phwi_ctxt); + } else { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : HWI_MEM_ADDN_CONTEXT is more " + "than one element.Failing to load\n"); + return -ENOMEM; + } + + iscsi_init_global_templates(phba); + if (beiscsi_init_wrb_handle(phba)) + return -ENOMEM; + + if (hwi_init_async_pdu_ctx(phba)) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : hwi_init_async_pdu_ctx failed\n"); + return -ENOMEM; + } + + if (hwi_init_port(phba) != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : hwi_init_controller failed\n"); + + return -ENOMEM; + } + return 0; +} + +static void beiscsi_free_mem(struct beiscsi_hba *phba) +{ + struct be_mem_descriptor *mem_descr; + int i, j; + + mem_descr = phba->init_mem; + i = 0; + j = 0; + for (i = 0; i < SE_MEM_MAX; i++) { + for (j = mem_descr->num_elements; j > 0; j--) { + pci_free_consistent(phba->pcidev, + mem_descr->mem_array[j - 1].size, + mem_descr->mem_array[j - 1].virtual_address, + (unsigned long)mem_descr->mem_array[j - 1]. + bus_address.u.a64.address); + } + + kfree(mem_descr->mem_array); + mem_descr++; + } + kfree(phba->init_mem); + kfree(phba->phwi_ctrlr->wrb_context); + kfree(phba->phwi_ctrlr); +} + +static int beiscsi_init_controller(struct beiscsi_hba *phba) +{ + int ret = -ENOMEM; + + ret = beiscsi_get_memory(phba); + if (ret < 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_dev_probe -" + "Failed in beiscsi_alloc_memory\n"); + return ret; + } + + ret = hwi_init_controller(phba); + if (ret) + goto free_init; + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : Return success from beiscsi_init_controller"); + + return 0; + +free_init: + beiscsi_free_mem(phba); + return ret; +} + +static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba) +{ + struct be_mem_descriptor *mem_descr_sglh, *mem_descr_sg; + struct sgl_handle *psgl_handle; + struct iscsi_sge *pfrag; + unsigned int arr_index, i, idx; + unsigned int ulp_icd_start, ulp_num = 0; + + phba->io_sgl_hndl_avbl = 0; + phba->eh_sgl_hndl_avbl = 0; + + mem_descr_sglh = phba->init_mem; + mem_descr_sglh += HWI_MEM_SGLH; + if (1 == mem_descr_sglh->num_elements) { + phba->io_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) * + phba->params.ios_per_ctrl, + GFP_KERNEL); + if (!phba->io_sgl_hndl_base) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Mem Alloc Failed. Failing to load\n"); + return -ENOMEM; + } + phba->eh_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) * + (phba->params.icds_per_ctrl - + phba->params.ios_per_ctrl), + GFP_KERNEL); + if (!phba->eh_sgl_hndl_base) { + kfree(phba->io_sgl_hndl_base); + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Mem Alloc Failed. Failing to load\n"); + return -ENOMEM; + } + } else { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : HWI_MEM_SGLH is more than one element." + "Failing to load\n"); + return -ENOMEM; + } + + arr_index = 0; + idx = 0; + while (idx < mem_descr_sglh->num_elements) { + psgl_handle = mem_descr_sglh->mem_array[idx].virtual_address; + + for (i = 0; i < (mem_descr_sglh->mem_array[idx].size / + sizeof(struct sgl_handle)); i++) { + if (arr_index < phba->params.ios_per_ctrl) { + phba->io_sgl_hndl_base[arr_index] = psgl_handle; + phba->io_sgl_hndl_avbl++; + arr_index++; + } else { + phba->eh_sgl_hndl_base[arr_index - + phba->params.ios_per_ctrl] = + psgl_handle; + arr_index++; + phba->eh_sgl_hndl_avbl++; + } + psgl_handle++; + } + idx++; + } + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : phba->io_sgl_hndl_avbl=%d" + "phba->eh_sgl_hndl_avbl=%d\n", + phba->io_sgl_hndl_avbl, + phba->eh_sgl_hndl_avbl); + + mem_descr_sg = phba->init_mem; + mem_descr_sg += HWI_MEM_SGE; + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "\n BM_%d : mem_descr_sg->num_elements=%d\n", + mem_descr_sg->num_elements); + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) + if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) + break; + + ulp_icd_start = phba->fw_config.iscsi_icd_start[ulp_num]; + + arr_index = 0; + idx = 0; + while (idx < mem_descr_sg->num_elements) { + pfrag = mem_descr_sg->mem_array[idx].virtual_address; + + for (i = 0; + i < (mem_descr_sg->mem_array[idx].size) / + (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io); + i++) { + if (arr_index < phba->params.ios_per_ctrl) + psgl_handle = phba->io_sgl_hndl_base[arr_index]; + else + psgl_handle = phba->eh_sgl_hndl_base[arr_index - + phba->params.ios_per_ctrl]; + psgl_handle->pfrag = pfrag; + AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, pfrag, 0); + AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, pfrag, 0); + pfrag += phba->params.num_sge_per_io; + psgl_handle->sgl_index = ulp_icd_start + arr_index++; + } + idx++; + } + phba->io_sgl_free_index = 0; + phba->io_sgl_alloc_index = 0; + phba->eh_sgl_free_index = 0; + phba->eh_sgl_alloc_index = 0; + return 0; +} + +static int hba_setup_cid_tbls(struct beiscsi_hba *phba) +{ + int ret; + uint16_t i, ulp_num; + struct ulp_cid_info *ptr_cid_info = NULL; + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) { + ptr_cid_info = kzalloc(sizeof(struct ulp_cid_info), + GFP_KERNEL); + + if (!ptr_cid_info) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Failed to allocate memory" + "for ULP_CID_INFO for ULP : %d\n", + ulp_num); + ret = -ENOMEM; + goto free_memory; + + } + + /* Allocate memory for CID array */ + ptr_cid_info->cid_array = kzalloc(sizeof(void *) * + BEISCSI_GET_CID_COUNT(phba, + ulp_num), GFP_KERNEL); + if (!ptr_cid_info->cid_array) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Failed to allocate memory" + "for CID_ARRAY for ULP : %d\n", + ulp_num); + kfree(ptr_cid_info); + ptr_cid_info = NULL; + ret = -ENOMEM; + + goto free_memory; + } + ptr_cid_info->avlbl_cids = BEISCSI_GET_CID_COUNT( + phba, ulp_num); + + /* Save the cid_info_array ptr */ + phba->cid_array_info[ulp_num] = ptr_cid_info; + } + } + phba->ep_array = kzalloc(sizeof(struct iscsi_endpoint *) * + phba->params.cxns_per_ctrl, GFP_KERNEL); + if (!phba->ep_array) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Failed to allocate memory in " + "hba_setup_cid_tbls\n"); + ret = -ENOMEM; + + goto free_memory; + } + + phba->conn_table = kzalloc(sizeof(struct beiscsi_conn *) * + phba->params.cxns_per_ctrl, GFP_KERNEL); + if (!phba->conn_table) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Failed to allocate memory in" + "hba_setup_cid_tbls\n"); + + kfree(phba->ep_array); + phba->ep_array = NULL; + ret = -ENOMEM; + + goto free_memory; + } + + for (i = 0; i < phba->params.cxns_per_ctrl; i++) { + ulp_num = phba->phwi_ctrlr->wrb_context[i].ulp_num; + + ptr_cid_info = phba->cid_array_info[ulp_num]; + ptr_cid_info->cid_array[ptr_cid_info->cid_alloc++] = + phba->phwi_ctrlr->wrb_context[i].cid; + + } + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) { + ptr_cid_info = phba->cid_array_info[ulp_num]; + + ptr_cid_info->cid_alloc = 0; + ptr_cid_info->cid_free = 0; + } + } + return 0; + +free_memory: + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) { + ptr_cid_info = phba->cid_array_info[ulp_num]; + + if (ptr_cid_info) { + kfree(ptr_cid_info->cid_array); + kfree(ptr_cid_info); + phba->cid_array_info[ulp_num] = NULL; + } + } + } + + return ret; +} + +static void hwi_enable_intr(struct beiscsi_hba *phba) +{ + struct be_ctrl_info *ctrl = &phba->ctrl; + struct hwi_controller *phwi_ctrlr; + struct hwi_context_memory *phwi_context; + struct be_queue_info *eq; + u8 __iomem *addr; + u32 reg, i; + u32 enabled; + + phwi_ctrlr = phba->phwi_ctrlr; + phwi_context = phwi_ctrlr->phwi_ctxt; + + addr = (u8 __iomem *) ((u8 __iomem *) ctrl->pcicfg + + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET); + reg = ioread32(addr); + + enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; + if (!enabled) { + reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : reg =x%08x addr=%p\n", reg, addr); + iowrite32(reg, addr); + } + + if (!phba->msix_enabled) { + eq = &phwi_context->be_eq[0].q; + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : eq->id=%d\n", eq->id); + + hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1); + } else { + for (i = 0; i <= phba->num_cpus; i++) { + eq = &phwi_context->be_eq[i].q; + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : eq->id=%d\n", eq->id); + hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1); + } + } +} + +static void hwi_disable_intr(struct beiscsi_hba *phba) +{ + struct be_ctrl_info *ctrl = &phba->ctrl; + + u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET; + u32 reg = ioread32(addr); + + u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; + if (enabled) { + reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; + iowrite32(reg, addr); + } else + beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT, + "BM_%d : In hwi_disable_intr, Already Disabled\n"); +} + +/** + * beiscsi_get_boot_info()- Get the boot session info + * @phba: The device priv structure instance + * + * Get the boot target info and store in driver priv structure + * + * return values + * Success: 0 + * Failure: Non-Zero Value + **/ +static int beiscsi_get_boot_info(struct beiscsi_hba *phba) +{ + struct be_cmd_get_session_resp *session_resp; + struct be_dma_mem nonemb_cmd; + unsigned int tag; + unsigned int s_handle; + int ret = -ENOMEM; + + /* Get the session handle of the boot target */ + ret = be_mgmt_get_boot_shandle(phba, &s_handle); + if (ret) { + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG, + "BM_%d : No boot session\n"); + return ret; + } + nonemb_cmd.va = pci_zalloc_consistent(phba->ctrl.pdev, + sizeof(*session_resp), + &nonemb_cmd.dma); + if (nonemb_cmd.va == NULL) { + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG, + "BM_%d : Failed to allocate memory for" + "beiscsi_get_session_info\n"); + + return -ENOMEM; + } + + tag = mgmt_get_session_info(phba, s_handle, + &nonemb_cmd); + if (!tag) { + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG, + "BM_%d : beiscsi_get_session_info" + " Failed\n"); + + goto boot_freemem; + } + + ret = beiscsi_mccq_compl(phba, tag, NULL, &nonemb_cmd); + if (ret) { + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG, + "BM_%d : beiscsi_get_session_info Failed"); + + if (ret != -EBUSY) + goto boot_freemem; + else + return ret; + } + + session_resp = nonemb_cmd.va ; + + memcpy(&phba->boot_sess, &session_resp->session_info, + sizeof(struct mgmt_session_info)); + ret = 0; + +boot_freemem: + pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, + nonemb_cmd.va, nonemb_cmd.dma); + return ret; +} + +static void beiscsi_boot_release(void *data) +{ + struct beiscsi_hba *phba = data; + + scsi_host_put(phba->shost); +} + +static int beiscsi_setup_boot_info(struct beiscsi_hba *phba) +{ + struct iscsi_boot_kobj *boot_kobj; + + /* it has been created previously */ + if (phba->boot_kset) + return 0; + + /* get boot info using mgmt cmd */ + if (beiscsi_get_boot_info(phba)) + /* Try to see if we can carry on without this */ + return 0; + + phba->boot_kset = iscsi_boot_create_host_kset(phba->shost->host_no); + if (!phba->boot_kset) + return -ENOMEM; + + /* get a ref because the show function will ref the phba */ + if (!scsi_host_get(phba->shost)) + goto free_kset; + boot_kobj = iscsi_boot_create_target(phba->boot_kset, 0, phba, + beiscsi_show_boot_tgt_info, + beiscsi_tgt_get_attr_visibility, + beiscsi_boot_release); + if (!boot_kobj) + goto put_shost; + + if (!scsi_host_get(phba->shost)) + goto free_kset; + boot_kobj = iscsi_boot_create_initiator(phba->boot_kset, 0, phba, + beiscsi_show_boot_ini_info, + beiscsi_ini_get_attr_visibility, + beiscsi_boot_release); + if (!boot_kobj) + goto put_shost; + + if (!scsi_host_get(phba->shost)) + goto free_kset; + boot_kobj = iscsi_boot_create_ethernet(phba->boot_kset, 0, phba, + beiscsi_show_boot_eth_info, + beiscsi_eth_get_attr_visibility, + beiscsi_boot_release); + if (!boot_kobj) + goto put_shost; + return 0; + +put_shost: + scsi_host_put(phba->shost); +free_kset: + iscsi_boot_destroy_kset(phba->boot_kset); + return -ENOMEM; +} + +static int beiscsi_init_port(struct beiscsi_hba *phba) +{ + int ret; + + ret = beiscsi_init_controller(phba); + if (ret < 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_dev_probe - Failed in" + "beiscsi_init_controller\n"); + return ret; + } + ret = beiscsi_init_sgl_handle(phba); + if (ret < 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_dev_probe - Failed in" + "beiscsi_init_sgl_handle\n"); + goto do_cleanup_ctrlr; + } + + if (hba_setup_cid_tbls(phba)) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Failed in hba_setup_cid_tbls\n"); + kfree(phba->io_sgl_hndl_base); + kfree(phba->eh_sgl_hndl_base); + goto do_cleanup_ctrlr; + } + + return ret; + +do_cleanup_ctrlr: + hwi_cleanup(phba); + return ret; +} + +static void hwi_purge_eq(struct beiscsi_hba *phba) +{ + struct hwi_controller *phwi_ctrlr; + struct hwi_context_memory *phwi_context; + struct be_queue_info *eq; + struct be_eq_entry *eqe = NULL; + int i, eq_msix; + unsigned int num_processed; + + phwi_ctrlr = phba->phwi_ctrlr; + phwi_context = phwi_ctrlr->phwi_ctxt; + if (phba->msix_enabled) + eq_msix = 1; + else + eq_msix = 0; + + for (i = 0; i < (phba->num_cpus + eq_msix); i++) { + eq = &phwi_context->be_eq[i].q; + eqe = queue_tail_node(eq); + num_processed = 0; + while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] + & EQE_VALID_MASK) { + AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0); + queue_tail_inc(eq); + eqe = queue_tail_node(eq); + num_processed++; + } + + if (num_processed) + hwi_ring_eq_db(phba, eq->id, 1, num_processed, 1, 1); + } +} + +static void beiscsi_clean_port(struct beiscsi_hba *phba) +{ + int mgmt_status, ulp_num; + struct ulp_cid_info *ptr_cid_info = NULL; + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) { + mgmt_status = mgmt_epfw_cleanup(phba, ulp_num); + if (mgmt_status) + beiscsi_log(phba, KERN_WARNING, + BEISCSI_LOG_INIT, + "BM_%d : mgmt_epfw_cleanup FAILED" + " for ULP_%d\n", ulp_num); + } + } + + hwi_purge_eq(phba); + hwi_cleanup(phba); + kfree(phba->io_sgl_hndl_base); + kfree(phba->eh_sgl_hndl_base); + kfree(phba->ep_array); + kfree(phba->conn_table); + + for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) { + if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) { + ptr_cid_info = phba->cid_array_info[ulp_num]; + + if (ptr_cid_info) { + kfree(ptr_cid_info->cid_array); + kfree(ptr_cid_info); + phba->cid_array_info[ulp_num] = NULL; + } + } + } + +} + +/** + * beiscsi_free_mgmt_task_handles()- Free driver CXN resources + * @beiscsi_conn: ptr to the conn to be cleaned up + * @task: ptr to iscsi_task resource to be freed. + * + * Free driver mgmt resources binded to CXN. + **/ +void +beiscsi_free_mgmt_task_handles(struct beiscsi_conn *beiscsi_conn, + struct iscsi_task *task) +{ + struct beiscsi_io_task *io_task; + struct beiscsi_hba *phba = beiscsi_conn->phba; + struct hwi_wrb_context *pwrb_context; + struct hwi_controller *phwi_ctrlr; + uint16_t cri_index = BE_GET_CRI_FROM_CID( + beiscsi_conn->beiscsi_conn_cid); + + phwi_ctrlr = phba->phwi_ctrlr; + pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; + + io_task = task->dd_data; + + if (io_task->pwrb_handle) { + memset(io_task->pwrb_handle->pwrb, 0, + sizeof(struct iscsi_wrb)); + free_wrb_handle(phba, pwrb_context, + io_task->pwrb_handle); + io_task->pwrb_handle = NULL; + } + + if (io_task->psgl_handle) { + spin_lock_bh(&phba->mgmt_sgl_lock); + free_mgmt_sgl_handle(phba, + io_task->psgl_handle); + io_task->psgl_handle = NULL; + spin_unlock_bh(&phba->mgmt_sgl_lock); + } + + if (io_task->mtask_addr) + pci_unmap_single(phba->pcidev, + io_task->mtask_addr, + io_task->mtask_data_count, + PCI_DMA_TODEVICE); +} + +/** + * beiscsi_cleanup_task()- Free driver resources of the task + * @task: ptr to the iscsi task + * + **/ +static void beiscsi_cleanup_task(struct iscsi_task *task) +{ + struct beiscsi_io_task *io_task = task->dd_data; + struct iscsi_conn *conn = task->conn; + struct beiscsi_conn *beiscsi_conn = conn->dd_data; + struct beiscsi_hba *phba = beiscsi_conn->phba; + struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess; + struct hwi_wrb_context *pwrb_context; + struct hwi_controller *phwi_ctrlr; + uint16_t cri_index = BE_GET_CRI_FROM_CID( + beiscsi_conn->beiscsi_conn_cid); + + phwi_ctrlr = phba->phwi_ctrlr; + pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; + + if (io_task->cmd_bhs) { + pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs, + io_task->bhs_pa.u.a64.address); + io_task->cmd_bhs = NULL; + } + + if (task->sc) { + if (io_task->pwrb_handle) { + free_wrb_handle(phba, pwrb_context, + io_task->pwrb_handle); + io_task->pwrb_handle = NULL; + } + + if (io_task->psgl_handle) { + spin_lock(&phba->io_sgl_lock); + free_io_sgl_handle(phba, io_task->psgl_handle); + spin_unlock(&phba->io_sgl_lock); + io_task->psgl_handle = NULL; + } + + if (io_task->scsi_cmnd) { + scsi_dma_unmap(io_task->scsi_cmnd); + io_task->scsi_cmnd = NULL; + } + } else { + if (!beiscsi_conn->login_in_progress) + beiscsi_free_mgmt_task_handles(beiscsi_conn, task); + } +} + +void +beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn, + struct beiscsi_offload_params *params) +{ + struct wrb_handle *pwrb_handle; + struct beiscsi_hba *phba = beiscsi_conn->phba; + struct iscsi_task *task = beiscsi_conn->task; + struct iscsi_session *session = task->conn->session; + u32 doorbell = 0; + + /* + * We can always use 0 here because it is reserved by libiscsi for + * login/startup related tasks. + */ + beiscsi_conn->login_in_progress = 0; + spin_lock_bh(&session->back_lock); + beiscsi_cleanup_task(task); + spin_unlock_bh(&session->back_lock); + + pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid); + + /* Check for the adapter family */ + if (is_chip_be2_be3r(phba)) + beiscsi_offload_cxn_v0(params, pwrb_handle, + phba->init_mem); + else + beiscsi_offload_cxn_v2(params, pwrb_handle); + + be_dws_le_to_cpu(pwrb_handle->pwrb, + sizeof(struct iscsi_target_context_update_wrb)); + + doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK; + doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK) + << DB_DEF_PDU_WRB_INDEX_SHIFT; + doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT; + iowrite32(doorbell, phba->db_va + + beiscsi_conn->doorbell_offset); +} + +static void beiscsi_parse_pdu(struct iscsi_conn *conn, itt_t itt, + int *index, int *age) +{ + *index = (int)itt; + if (age) + *age = conn->session->age; +} + +/** + * beiscsi_alloc_pdu - allocates pdu and related resources + * @task: libiscsi task + * @opcode: opcode of pdu for task + * + * This is called with the session lock held. It will allocate + * the wrb and sgl if needed for the command. And it will prep + * the pdu's itt. beiscsi_parse_pdu will later translate + * the pdu itt to the libiscsi task itt. + */ +static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode) +{ + struct beiscsi_io_task *io_task = task->dd_data; + struct iscsi_conn *conn = task->conn; + struct beiscsi_conn *beiscsi_conn = conn->dd_data; + struct beiscsi_hba *phba = beiscsi_conn->phba; + struct hwi_wrb_context *pwrb_context; + struct hwi_controller *phwi_ctrlr; + itt_t itt; + uint16_t cri_index = 0; + struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess; + dma_addr_t paddr; + + io_task->cmd_bhs = pci_pool_alloc(beiscsi_sess->bhs_pool, + GFP_ATOMIC, &paddr); + if (!io_task->cmd_bhs) + return -ENOMEM; + io_task->bhs_pa.u.a64.address = paddr; + io_task->libiscsi_itt = (itt_t)task->itt; + io_task->conn = beiscsi_conn; + + task->hdr = (struct iscsi_hdr *)&io_task->cmd_bhs->iscsi_hdr; + task->hdr_max = sizeof(struct be_cmd_bhs); + io_task->psgl_handle = NULL; + io_task->pwrb_handle = NULL; + + if (task->sc) { + spin_lock(&phba->io_sgl_lock); + io_task->psgl_handle = alloc_io_sgl_handle(phba); + spin_unlock(&phba->io_sgl_lock); + if (!io_task->psgl_handle) { + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : Alloc of IO_SGL_ICD Failed" + "for the CID : %d\n", + beiscsi_conn->beiscsi_conn_cid); + goto free_hndls; + } + io_task->pwrb_handle = alloc_wrb_handle(phba, + beiscsi_conn->beiscsi_conn_cid); + if (!io_task->pwrb_handle) { + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : Alloc of WRB_HANDLE Failed" + "for the CID : %d\n", + beiscsi_conn->beiscsi_conn_cid); + goto free_io_hndls; + } + } else { + io_task->scsi_cmnd = NULL; + if ((opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) { + beiscsi_conn->task = task; + if (!beiscsi_conn->login_in_progress) { + spin_lock(&phba->mgmt_sgl_lock); + io_task->psgl_handle = (struct sgl_handle *) + alloc_mgmt_sgl_handle(phba); + spin_unlock(&phba->mgmt_sgl_lock); + if (!io_task->psgl_handle) { + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_IO | + BEISCSI_LOG_CONFIG, + "BM_%d : Alloc of MGMT_SGL_ICD Failed" + "for the CID : %d\n", + beiscsi_conn-> + beiscsi_conn_cid); + goto free_hndls; + } + + beiscsi_conn->login_in_progress = 1; + beiscsi_conn->plogin_sgl_handle = + io_task->psgl_handle; + io_task->pwrb_handle = + alloc_wrb_handle(phba, + beiscsi_conn->beiscsi_conn_cid); + if (!io_task->pwrb_handle) { + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_IO | + BEISCSI_LOG_CONFIG, + "BM_%d : Alloc of WRB_HANDLE Failed" + "for the CID : %d\n", + beiscsi_conn-> + beiscsi_conn_cid); + goto free_mgmt_hndls; + } + beiscsi_conn->plogin_wrb_handle = + io_task->pwrb_handle; + + } else { + io_task->psgl_handle = + beiscsi_conn->plogin_sgl_handle; + io_task->pwrb_handle = + beiscsi_conn->plogin_wrb_handle; + } + } else { + spin_lock(&phba->mgmt_sgl_lock); + io_task->psgl_handle = alloc_mgmt_sgl_handle(phba); + spin_unlock(&phba->mgmt_sgl_lock); + if (!io_task->psgl_handle) { + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_IO | + BEISCSI_LOG_CONFIG, + "BM_%d : Alloc of MGMT_SGL_ICD Failed" + "for the CID : %d\n", + beiscsi_conn-> + beiscsi_conn_cid); + goto free_hndls; + } + io_task->pwrb_handle = + alloc_wrb_handle(phba, + beiscsi_conn->beiscsi_conn_cid); + if (!io_task->pwrb_handle) { + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, + "BM_%d : Alloc of WRB_HANDLE Failed" + "for the CID : %d\n", + beiscsi_conn->beiscsi_conn_cid); + goto free_mgmt_hndls; + } + + } + } + itt = (itt_t) cpu_to_be32(((unsigned int)io_task->pwrb_handle-> + wrb_index << 16) | (unsigned int) + (io_task->psgl_handle->sgl_index)); + io_task->pwrb_handle->pio_handle = task; + + io_task->cmd_bhs->iscsi_hdr.itt = itt; + return 0; + +free_io_hndls: + spin_lock(&phba->io_sgl_lock); + free_io_sgl_handle(phba, io_task->psgl_handle); + spin_unlock(&phba->io_sgl_lock); + goto free_hndls; +free_mgmt_hndls: + spin_lock(&phba->mgmt_sgl_lock); + free_mgmt_sgl_handle(phba, io_task->psgl_handle); + io_task->psgl_handle = NULL; + spin_unlock(&phba->mgmt_sgl_lock); +free_hndls: + phwi_ctrlr = phba->phwi_ctrlr; + cri_index = BE_GET_CRI_FROM_CID( + beiscsi_conn->beiscsi_conn_cid); + pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; + if (io_task->pwrb_handle) + free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle); + io_task->pwrb_handle = NULL; + pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs, + io_task->bhs_pa.u.a64.address); + io_task->cmd_bhs = NULL; + return -ENOMEM; +} +int beiscsi_iotask_v2(struct iscsi_task *task, struct scatterlist *sg, + unsigned int num_sg, unsigned int xferlen, + unsigned int writedir) +{ + + struct beiscsi_io_task *io_task = task->dd_data; + struct iscsi_conn *conn = task->conn; + struct beiscsi_conn *beiscsi_conn = conn->dd_data; + struct beiscsi_hba *phba = beiscsi_conn->phba; + struct iscsi_wrb *pwrb = NULL; + unsigned int doorbell = 0; + + pwrb = io_task->pwrb_handle->pwrb; + + io_task->cmd_bhs->iscsi_hdr.exp_statsn = 0; + io_task->bhs_len = sizeof(struct be_cmd_bhs); + + if (writedir) { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb, + INI_WR_CMD); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 1); + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb, + INI_RD_CMD); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 0); + } + + io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb_v2, + type, pwrb); + + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, lun, pwrb, + cpu_to_be16(*(unsigned short *) + &io_task->cmd_bhs->iscsi_hdr.lun)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb, xferlen); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb, + io_task->pwrb_handle->wrb_index); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb, + be32_to_cpu(task->cmdsn)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb, + io_task->psgl_handle->sgl_index); + + hwi_write_sgl_v2(pwrb, sg, num_sg, io_task); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb, + io_task->pwrb_handle->nxt_wrb_index); + + be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb)); + + doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK; + doorbell |= (io_task->pwrb_handle->wrb_index & + DB_DEF_PDU_WRB_INDEX_MASK) << + DB_DEF_PDU_WRB_INDEX_SHIFT; + doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT; + iowrite32(doorbell, phba->db_va + + beiscsi_conn->doorbell_offset); + return 0; +} + +static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg, + unsigned int num_sg, unsigned int xferlen, + unsigned int writedir) +{ + + struct beiscsi_io_task *io_task = task->dd_data; + struct iscsi_conn *conn = task->conn; + struct beiscsi_conn *beiscsi_conn = conn->dd_data; + struct beiscsi_hba *phba = beiscsi_conn->phba; + struct iscsi_wrb *pwrb = NULL; + unsigned int doorbell = 0; + + pwrb = io_task->pwrb_handle->pwrb; + io_task->cmd_bhs->iscsi_hdr.exp_statsn = 0; + io_task->bhs_len = sizeof(struct be_cmd_bhs); + + if (writedir) { + AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, + INI_WR_CMD); + AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1); + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, + INI_RD_CMD); + AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0); + } + + io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb, + type, pwrb); + + AMAP_SET_BITS(struct amap_iscsi_wrb, lun, pwrb, + cpu_to_be16(*(unsigned short *) + &io_task->cmd_bhs->iscsi_hdr.lun)); + AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, xferlen); + AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb, + io_task->pwrb_handle->wrb_index); + AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, + be32_to_cpu(task->cmdsn)); + AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb, + io_task->psgl_handle->sgl_index); + + hwi_write_sgl(pwrb, sg, num_sg, io_task); + + AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb, + io_task->pwrb_handle->nxt_wrb_index); + be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb)); + + doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK; + doorbell |= (io_task->pwrb_handle->wrb_index & + DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT; + doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT; + + iowrite32(doorbell, phba->db_va + + beiscsi_conn->doorbell_offset); + return 0; +} + +static int beiscsi_mtask(struct iscsi_task *task) +{ + struct beiscsi_io_task *io_task = task->dd_data; + struct iscsi_conn *conn = task->conn; + struct beiscsi_conn *beiscsi_conn = conn->dd_data; + struct beiscsi_hba *phba = beiscsi_conn->phba; + struct iscsi_wrb *pwrb = NULL; + unsigned int doorbell = 0; + unsigned int cid; + unsigned int pwrb_typeoffset = 0; + + cid = beiscsi_conn->beiscsi_conn_cid; + pwrb = io_task->pwrb_handle->pwrb; + memset(pwrb, 0, sizeof(*pwrb)); + + if (is_chip_be2_be3r(phba)) { + AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, + be32_to_cpu(task->cmdsn)); + AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb, + io_task->pwrb_handle->wrb_index); + AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb, + io_task->psgl_handle->sgl_index); + AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, + task->data_count); + AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb, + io_task->pwrb_handle->nxt_wrb_index); + pwrb_typeoffset = BE_WRB_TYPE_OFFSET; + } else { + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb, + be32_to_cpu(task->cmdsn)); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb, + io_task->pwrb_handle->wrb_index); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb, + io_task->psgl_handle->sgl_index); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb, + task->data_count); + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb, + io_task->pwrb_handle->nxt_wrb_index); + pwrb_typeoffset = SKH_WRB_TYPE_OFFSET; + } + + + switch (task->hdr->opcode & ISCSI_OPCODE_MASK) { + case ISCSI_OP_LOGIN: + AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1); + ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset); + hwi_write_buffer(pwrb, task); + break; + case ISCSI_OP_NOOP_OUT: + if (task->hdr->ttt != ISCSI_RESERVED_TAG) { + ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset); + if (is_chip_be2_be3r(phba)) + AMAP_SET_BITS(struct amap_iscsi_wrb, + dmsg, pwrb, 1); + else + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + dmsg, pwrb, 1); + } else { + ADAPTER_SET_WRB_TYPE(pwrb, INI_RD_CMD, pwrb_typeoffset); + if (is_chip_be2_be3r(phba)) + AMAP_SET_BITS(struct amap_iscsi_wrb, + dmsg, pwrb, 0); + else + AMAP_SET_BITS(struct amap_iscsi_wrb_v2, + dmsg, pwrb, 0); + } + hwi_write_buffer(pwrb, task); + break; + case ISCSI_OP_TEXT: + ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset); + hwi_write_buffer(pwrb, task); + break; + case ISCSI_OP_SCSI_TMFUNC: + ADAPTER_SET_WRB_TYPE(pwrb, INI_TMF_CMD, pwrb_typeoffset); + hwi_write_buffer(pwrb, task); + break; + case ISCSI_OP_LOGOUT: + ADAPTER_SET_WRB_TYPE(pwrb, HWH_TYPE_LOGOUT, pwrb_typeoffset); + hwi_write_buffer(pwrb, task); + break; + + default: + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, + "BM_%d : opcode =%d Not supported\n", + task->hdr->opcode & ISCSI_OPCODE_MASK); + + return -EINVAL; + } + + /* Set the task type */ + io_task->wrb_type = (is_chip_be2_be3r(phba)) ? + AMAP_GET_BITS(struct amap_iscsi_wrb, type, pwrb) : + AMAP_GET_BITS(struct amap_iscsi_wrb_v2, type, pwrb); + + doorbell |= cid & DB_WRB_POST_CID_MASK; + doorbell |= (io_task->pwrb_handle->wrb_index & + DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT; + doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT; + iowrite32(doorbell, phba->db_va + + beiscsi_conn->doorbell_offset); + return 0; +} + +static int beiscsi_task_xmit(struct iscsi_task *task) +{ + struct beiscsi_io_task *io_task = task->dd_data; + struct scsi_cmnd *sc = task->sc; + struct beiscsi_hba *phba = NULL; + struct scatterlist *sg; + int num_sg; + unsigned int writedir = 0, xferlen = 0; + + phba = ((struct beiscsi_conn *)task->conn->dd_data)->phba; + + if (!sc) + return beiscsi_mtask(task); + + io_task->scsi_cmnd = sc; + num_sg = scsi_dma_map(sc); + if (num_sg < 0) { + struct iscsi_conn *conn = task->conn; + struct beiscsi_hba *phba = NULL; + + phba = ((struct beiscsi_conn *)conn->dd_data)->phba; + beiscsi_log(phba, KERN_ERR, + BEISCSI_LOG_IO | BEISCSI_LOG_ISCSI, + "BM_%d : scsi_dma_map Failed " + "Driver_ITT : 0x%x ITT : 0x%x Xferlen : 0x%x\n", + be32_to_cpu(io_task->cmd_bhs->iscsi_hdr.itt), + io_task->libiscsi_itt, scsi_bufflen(sc)); + + return num_sg; + } + xferlen = scsi_bufflen(sc); + sg = scsi_sglist(sc); + if (sc->sc_data_direction == DMA_TO_DEVICE) + writedir = 1; + else + writedir = 0; + + return phba->iotask_fn(task, sg, num_sg, xferlen, writedir); +} + +/** + * beiscsi_bsg_request - handle bsg request from ISCSI transport + * @job: job to handle + */ +static int beiscsi_bsg_request(struct bsg_job *job) +{ + struct Scsi_Host *shost; + struct beiscsi_hba *phba; + struct iscsi_bsg_request *bsg_req = job->request; + int rc = -EINVAL; + unsigned int tag; + struct be_dma_mem nonemb_cmd; + struct be_cmd_resp_hdr *resp; + struct iscsi_bsg_reply *bsg_reply = job->reply; + unsigned short status, extd_status; + + shost = iscsi_job_to_shost(job); + phba = iscsi_host_priv(shost); + + switch (bsg_req->msgcode) { + case ISCSI_BSG_HST_VENDOR: + nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev, + job->request_payload.payload_len, + &nonemb_cmd.dma); + if (nonemb_cmd.va == NULL) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, + "BM_%d : Failed to allocate memory for " + "beiscsi_bsg_request\n"); + return -ENOMEM; + } + tag = mgmt_vendor_specific_fw_cmd(&phba->ctrl, phba, job, + &nonemb_cmd); + if (!tag) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, + "BM_%d : MBX Tag Allocation Failed\n"); + + pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, + nonemb_cmd.va, nonemb_cmd.dma); + return -EAGAIN; + } + + rc = wait_event_interruptible_timeout( + phba->ctrl.mcc_wait[tag], + phba->ctrl.mcc_numtag[tag], + msecs_to_jiffies( + BEISCSI_HOST_MBX_TIMEOUT)); + extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8; + status = phba->ctrl.mcc_numtag[tag] & 0x000000FF; + free_mcc_tag(&phba->ctrl, tag); + resp = (struct be_cmd_resp_hdr *)nonemb_cmd.va; + sg_copy_from_buffer(job->reply_payload.sg_list, + job->reply_payload.sg_cnt, + nonemb_cmd.va, (resp->response_length + + sizeof(*resp))); + bsg_reply->reply_payload_rcv_len = resp->response_length; + bsg_reply->result = status; + bsg_job_done(job, bsg_reply->result, + bsg_reply->reply_payload_rcv_len); + pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, + nonemb_cmd.va, nonemb_cmd.dma); + if (status || extd_status) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, + "BM_%d : MBX Cmd Failed" + " status = %d extd_status = %d\n", + status, extd_status); + + return -EIO; + } else { + rc = 0; + } + break; + + default: + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, + "BM_%d : Unsupported bsg command: 0x%x\n", + bsg_req->msgcode); + break; + } + + return rc; +} + +void beiscsi_hba_attrs_init(struct beiscsi_hba *phba) +{ + /* Set the logging parameter */ + beiscsi_log_enable_init(phba, beiscsi_log_enable); +} + +/* + * beiscsi_quiesce()- Cleanup Driver resources + * @phba: Instance Priv structure + * @unload_state:i Clean or EEH unload state + * + * Free the OS and HW resources held by the driver + **/ +static void beiscsi_quiesce(struct beiscsi_hba *phba, + uint32_t unload_state) +{ + struct hwi_controller *phwi_ctrlr; + struct hwi_context_memory *phwi_context; + struct be_eq_obj *pbe_eq; + unsigned int i, msix_vec; + + phwi_ctrlr = phba->phwi_ctrlr; + phwi_context = phwi_ctrlr->phwi_ctxt; + hwi_disable_intr(phba); + if (phba->msix_enabled) { + for (i = 0; i <= phba->num_cpus; i++) { + msix_vec = phba->msix_entries[i].vector; + synchronize_irq(msix_vec); + free_irq(msix_vec, &phwi_context->be_eq[i]); + kfree(phba->msi_name[i]); + } + } else + if (phba->pcidev->irq) { + synchronize_irq(phba->pcidev->irq); + free_irq(phba->pcidev->irq, phba); + } + pci_disable_msix(phba->pcidev); + cancel_delayed_work_sync(&phba->beiscsi_hw_check_task); + + for (i = 0; i < phba->num_cpus; i++) { + pbe_eq = &phwi_context->be_eq[i]; + blk_iopoll_disable(&pbe_eq->iopoll); + } + + if (unload_state == BEISCSI_CLEAN_UNLOAD) { + destroy_workqueue(phba->wq); + beiscsi_clean_port(phba); + beiscsi_free_mem(phba); + + beiscsi_unmap_pci_function(phba); + pci_free_consistent(phba->pcidev, + phba->ctrl.mbox_mem_alloced.size, + phba->ctrl.mbox_mem_alloced.va, + phba->ctrl.mbox_mem_alloced.dma); + } else { + hwi_purge_eq(phba); + hwi_cleanup(phba); + } + +} + +static void beiscsi_remove(struct pci_dev *pcidev) +{ + + struct beiscsi_hba *phba = NULL; + + phba = pci_get_drvdata(pcidev); + if (!phba) { + dev_err(&pcidev->dev, "beiscsi_remove called with no phba\n"); + return; + } + + beiscsi_destroy_def_ifaces(phba); + beiscsi_quiesce(phba, BEISCSI_CLEAN_UNLOAD); + iscsi_boot_destroy_kset(phba->boot_kset); + iscsi_host_remove(phba->shost); + pci_dev_put(phba->pcidev); + iscsi_host_free(phba->shost); + pci_disable_pcie_error_reporting(pcidev); + pci_set_drvdata(pcidev, NULL); + pci_disable_device(pcidev); +} + +static void beiscsi_shutdown(struct pci_dev *pcidev) +{ + + struct beiscsi_hba *phba = NULL; + + phba = (struct beiscsi_hba *)pci_get_drvdata(pcidev); + if (!phba) { + dev_err(&pcidev->dev, "beiscsi_shutdown called with no phba\n"); + return; + } + + phba->state = BE_ADAPTER_STATE_SHUTDOWN; + iscsi_host_for_each_session(phba->shost, be2iscsi_fail_session); + beiscsi_quiesce(phba, BEISCSI_CLEAN_UNLOAD); + pci_disable_device(pcidev); +} + +static void beiscsi_msix_enable(struct beiscsi_hba *phba) +{ + int i, status; + + for (i = 0; i <= phba->num_cpus; i++) + phba->msix_entries[i].entry = i; + + status = pci_enable_msix_range(phba->pcidev, phba->msix_entries, + phba->num_cpus + 1, phba->num_cpus + 1); + if (status > 0) + phba->msix_enabled = true; + + return; +} + +static void be_eqd_update(struct beiscsi_hba *phba) +{ + struct be_set_eqd set_eqd[MAX_CPUS]; + struct be_aic_obj *aic; + struct be_eq_obj *pbe_eq; + struct hwi_controller *phwi_ctrlr; + struct hwi_context_memory *phwi_context; + int eqd, i, num = 0; + ulong now; + u32 pps, delta; + unsigned int tag; + + phwi_ctrlr = phba->phwi_ctrlr; + phwi_context = phwi_ctrlr->phwi_ctxt; + + for (i = 0; i <= phba->num_cpus; i++) { + aic = &phba->aic_obj[i]; + pbe_eq = &phwi_context->be_eq[i]; + now = jiffies; + if (!aic->jiffs || time_before(now, aic->jiffs) || + pbe_eq->cq_count < aic->eq_prev) { + aic->jiffs = now; + aic->eq_prev = pbe_eq->cq_count; + continue; + } + delta = jiffies_to_msecs(now - aic->jiffs); + pps = (((u32)(pbe_eq->cq_count - aic->eq_prev) * 1000) / delta); + eqd = (pps / 1500) << 2; + + if (eqd < 8) + eqd = 0; + eqd = min_t(u32, eqd, phwi_context->max_eqd); + eqd = max_t(u32, eqd, phwi_context->min_eqd); + + aic->jiffs = now; + aic->eq_prev = pbe_eq->cq_count; + + if (eqd != aic->prev_eqd) { + set_eqd[num].delay_multiplier = (eqd * 65)/100; + set_eqd[num].eq_id = pbe_eq->q.id; + aic->prev_eqd = eqd; + num++; + } + } + if (num) { + tag = be_cmd_modify_eq_delay(phba, set_eqd, num); + if (tag) + beiscsi_mccq_compl(phba, tag, NULL, NULL); + } +} + +static void be_check_boot_session(struct beiscsi_hba *phba) +{ + if (beiscsi_setup_boot_info(phba)) + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Could not set up " + "iSCSI boot info on async event.\n"); +} + +/* + * beiscsi_hw_health_check()- Check adapter health + * @work: work item to check HW health + * + * Check if adapter in an unrecoverable state or not. + **/ +static void +beiscsi_hw_health_check(struct work_struct *work) +{ + struct beiscsi_hba *phba = + container_of(work, struct beiscsi_hba, + beiscsi_hw_check_task.work); + + be_eqd_update(phba); + + if (phba->state & BE_ADAPTER_CHECK_BOOT) { + phba->state &= ~BE_ADAPTER_CHECK_BOOT; + be_check_boot_session(phba); + } + + beiscsi_ue_detect(phba); + + schedule_delayed_work(&phba->beiscsi_hw_check_task, + msecs_to_jiffies(1000)); +} + + +static pci_ers_result_t beiscsi_eeh_err_detected(struct pci_dev *pdev, + pci_channel_state_t state) +{ + struct beiscsi_hba *phba = NULL; + + phba = (struct beiscsi_hba *)pci_get_drvdata(pdev); + phba->state |= BE_ADAPTER_PCI_ERR; + + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : EEH error detected\n"); + + beiscsi_quiesce(phba, BEISCSI_EEH_UNLOAD); + + if (state == pci_channel_io_perm_failure) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : EEH : State PERM Failure"); + return PCI_ERS_RESULT_DISCONNECT; + } + + pci_disable_device(pdev); + + /* The error could cause the FW to trigger a flash debug dump. + * Resetting the card while flash dump is in progress + * can cause it not to recover; wait for it to finish. + * Wait only for first function as it is needed only once per + * adapter. + **/ + if (pdev->devfn == 0) + ssleep(30); + + return PCI_ERS_RESULT_NEED_RESET; +} + +static pci_ers_result_t beiscsi_eeh_reset(struct pci_dev *pdev) +{ + struct beiscsi_hba *phba = NULL; + int status = 0; + + phba = (struct beiscsi_hba *)pci_get_drvdata(pdev); + + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : EEH Reset\n"); + + status = pci_enable_device(pdev); + if (status) + return PCI_ERS_RESULT_DISCONNECT; + + pci_set_master(pdev); + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + + /* Wait for the CHIP Reset to complete */ + status = be_chk_reset_complete(phba); + if (!status) { + beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT, + "BM_%d : EEH Reset Completed\n"); + } else { + beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT, + "BM_%d : EEH Reset Completion Failure\n"); + return PCI_ERS_RESULT_DISCONNECT; + } + + pci_cleanup_aer_uncorrect_error_status(pdev); + return PCI_ERS_RESULT_RECOVERED; +} + +static void beiscsi_eeh_resume(struct pci_dev *pdev) +{ + int ret = 0, i; + struct be_eq_obj *pbe_eq; + struct beiscsi_hba *phba = NULL; + struct hwi_controller *phwi_ctrlr; + struct hwi_context_memory *phwi_context; + + phba = (struct beiscsi_hba *)pci_get_drvdata(pdev); + pci_save_state(pdev); + + if (enable_msix) + find_num_cpus(phba); + else + phba->num_cpus = 1; + + if (enable_msix) { + beiscsi_msix_enable(phba); + if (!phba->msix_enabled) + phba->num_cpus = 1; + } + + ret = beiscsi_cmd_reset_function(phba); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Reset Failed\n"); + goto ret_err; + } + + ret = be_chk_reset_complete(phba); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Failed to get out of reset.\n"); + goto ret_err; + } + + beiscsi_get_params(phba); + phba->shost->max_id = phba->params.cxns_per_ctrl; + phba->shost->can_queue = phba->params.ios_per_ctrl; + ret = hwi_init_controller(phba); + + for (i = 0; i < MAX_MCC_CMD; i++) { + init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]); + phba->ctrl.mcc_tag[i] = i + 1; + phba->ctrl.mcc_numtag[i + 1] = 0; + phba->ctrl.mcc_tag_available++; + } + + phwi_ctrlr = phba->phwi_ctrlr; + phwi_context = phwi_ctrlr->phwi_ctxt; + + for (i = 0; i < phba->num_cpus; i++) { + pbe_eq = &phwi_context->be_eq[i]; + blk_iopoll_init(&pbe_eq->iopoll, be_iopoll_budget, + be_iopoll); + blk_iopoll_enable(&pbe_eq->iopoll); + } + + i = (phba->msix_enabled) ? i : 0; + /* Work item for MCC handling */ + pbe_eq = &phwi_context->be_eq[i]; + INIT_WORK(&pbe_eq->work_cqs, beiscsi_process_all_cqs); + + ret = beiscsi_init_irqs(phba); + if (ret < 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_eeh_resume - " + "Failed to beiscsi_init_irqs\n"); + goto ret_err; + } + + hwi_enable_intr(phba); + phba->state &= ~BE_ADAPTER_PCI_ERR; + + return; +ret_err: + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : AER EEH Resume Failed\n"); +} + +static int beiscsi_dev_probe(struct pci_dev *pcidev, + const struct pci_device_id *id) +{ + struct beiscsi_hba *phba = NULL; + struct hwi_controller *phwi_ctrlr; + struct hwi_context_memory *phwi_context; + struct be_eq_obj *pbe_eq; + int ret = 0, i; + + ret = beiscsi_enable_pci(pcidev); + if (ret < 0) { + dev_err(&pcidev->dev, + "beiscsi_dev_probe - Failed to enable pci device\n"); + return ret; + } + + phba = beiscsi_hba_alloc(pcidev); + if (!phba) { + dev_err(&pcidev->dev, + "beiscsi_dev_probe - Failed in beiscsi_hba_alloc\n"); + goto disable_pci; + } + + /* Enable EEH reporting */ + ret = pci_enable_pcie_error_reporting(pcidev); + if (ret) + beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT, + "BM_%d : PCIe Error Reporting " + "Enabling Failed\n"); + + pci_save_state(pcidev); + + /* Initialize Driver configuration Paramters */ + beiscsi_hba_attrs_init(phba); + + phba->fw_timeout = false; + phba->mac_addr_set = false; + + + switch (pcidev->device) { + case BE_DEVICE_ID1: + case OC_DEVICE_ID1: + case OC_DEVICE_ID2: + phba->generation = BE_GEN2; + phba->iotask_fn = beiscsi_iotask; + break; + case BE_DEVICE_ID2: + case OC_DEVICE_ID3: + phba->generation = BE_GEN3; + phba->iotask_fn = beiscsi_iotask; + break; + case OC_SKH_ID1: + phba->generation = BE_GEN4; + phba->iotask_fn = beiscsi_iotask_v2; + break; + default: + phba->generation = 0; + } + + ret = be_ctrl_init(phba, pcidev); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_dev_probe-" + "Failed in be_ctrl_init\n"); + goto hba_free; + } + + ret = beiscsi_cmd_reset_function(phba); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Reset Failed\n"); + goto hba_free; + } + ret = be_chk_reset_complete(phba); + if (ret) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Failed to get out of reset.\n"); + goto hba_free; + } + + spin_lock_init(&phba->io_sgl_lock); + spin_lock_init(&phba->mgmt_sgl_lock); + spin_lock_init(&phba->isr_lock); + spin_lock_init(&phba->async_pdu_lock); + ret = mgmt_get_fw_config(&phba->ctrl, phba); + if (ret != 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Error getting fw config\n"); + goto free_port; + } + + if (enable_msix) + find_num_cpus(phba); + else + phba->num_cpus = 1; + + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "BM_%d : num_cpus = %d\n", + phba->num_cpus); + + if (enable_msix) { + beiscsi_msix_enable(phba); + if (!phba->msix_enabled) + phba->num_cpus = 1; + } + + phba->shost->max_id = phba->params.cxns_per_ctrl; + beiscsi_get_params(phba); + phba->shost->can_queue = phba->params.ios_per_ctrl; + ret = beiscsi_init_port(phba); + if (ret < 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_dev_probe-" + "Failed in beiscsi_init_port\n"); + goto free_port; + } + + for (i = 0; i < MAX_MCC_CMD; i++) { + init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]); + phba->ctrl.mcc_tag[i] = i + 1; + phba->ctrl.mcc_numtag[i + 1] = 0; + phba->ctrl.mcc_tag_available++; + memset(&phba->ctrl.ptag_state[i].tag_mem_state, 0, + sizeof(struct be_dma_mem)); + } + + phba->ctrl.mcc_alloc_index = phba->ctrl.mcc_free_index = 0; + + snprintf(phba->wq_name, sizeof(phba->wq_name), "beiscsi_%02x_wq", + phba->shost->host_no); + phba->wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 1, phba->wq_name); + if (!phba->wq) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_dev_probe-" + "Failed to allocate work queue\n"); + goto free_twq; + } + + INIT_DELAYED_WORK(&phba->beiscsi_hw_check_task, + beiscsi_hw_health_check); + + phwi_ctrlr = phba->phwi_ctrlr; + phwi_context = phwi_ctrlr->phwi_ctxt; + + for (i = 0; i < phba->num_cpus; i++) { + pbe_eq = &phwi_context->be_eq[i]; + blk_iopoll_init(&pbe_eq->iopoll, be_iopoll_budget, + be_iopoll); + blk_iopoll_enable(&pbe_eq->iopoll); + } + + i = (phba->msix_enabled) ? i : 0; + /* Work item for MCC handling */ + pbe_eq = &phwi_context->be_eq[i]; + INIT_WORK(&pbe_eq->work_cqs, beiscsi_process_all_cqs); + + ret = beiscsi_init_irqs(phba); + if (ret < 0) { + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : beiscsi_dev_probe-" + "Failed to beiscsi_init_irqs\n"); + goto free_blkenbld; + } + hwi_enable_intr(phba); + + if (iscsi_host_add(phba->shost, &phba->pcidev->dev)) + goto free_blkenbld; + + if (beiscsi_setup_boot_info(phba)) + /* + * log error but continue, because we may not be using + * iscsi boot. + */ + beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, + "BM_%d : Could not set up " + "iSCSI boot info.\n"); + + beiscsi_create_def_ifaces(phba); + schedule_delayed_work(&phba->beiscsi_hw_check_task, + msecs_to_jiffies(1000)); + + beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT, + "\n\n\n BM_%d : SUCCESS - DRIVER LOADED\n\n\n"); + return 0; + +free_blkenbld: + destroy_workqueue(phba->wq); + for (i = 0; i < phba->num_cpus; i++) { + pbe_eq = &phwi_context->be_eq[i]; + blk_iopoll_disable(&pbe_eq->iopoll); + } +free_twq: + beiscsi_clean_port(phba); + beiscsi_free_mem(phba); +free_port: + pci_free_consistent(phba->pcidev, + phba->ctrl.mbox_mem_alloced.size, + phba->ctrl.mbox_mem_alloced.va, + phba->ctrl.mbox_mem_alloced.dma); + beiscsi_unmap_pci_function(phba); +hba_free: + if (phba->msix_enabled) + pci_disable_msix(phba->pcidev); + pci_dev_put(phba->pcidev); + iscsi_host_free(phba->shost); + pci_set_drvdata(pcidev, NULL); +disable_pci: + pci_disable_device(pcidev); + return ret; +} + +static struct pci_error_handlers beiscsi_eeh_handlers = { + .error_detected = beiscsi_eeh_err_detected, + .slot_reset = beiscsi_eeh_reset, + .resume = beiscsi_eeh_resume, +}; + +struct iscsi_transport beiscsi_iscsi_transport = { + .owner = THIS_MODULE, + .name = DRV_NAME, + .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_TEXT_NEGO | + CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD, + .create_session = beiscsi_session_create, + .destroy_session = beiscsi_session_destroy, + .create_conn = beiscsi_conn_create, + .bind_conn = beiscsi_conn_bind, + .destroy_conn = iscsi_conn_teardown, + .attr_is_visible = be2iscsi_attr_is_visible, + .set_iface_param = be2iscsi_iface_set_param, + .get_iface_param = be2iscsi_iface_get_param, + .set_param = beiscsi_set_param, + .get_conn_param = iscsi_conn_get_param, + .get_session_param = iscsi_session_get_param, + .get_host_param = beiscsi_get_host_param, + .start_conn = beiscsi_conn_start, + .stop_conn = iscsi_conn_stop, + .send_pdu = iscsi_conn_send_pdu, + .xmit_task = beiscsi_task_xmit, + .cleanup_task = beiscsi_cleanup_task, + .alloc_pdu = beiscsi_alloc_pdu, + .parse_pdu_itt = beiscsi_parse_pdu, + .get_stats = beiscsi_conn_get_stats, + .get_ep_param = beiscsi_ep_get_param, + .ep_connect = beiscsi_ep_connect, + .ep_poll = beiscsi_ep_poll, + .ep_disconnect = beiscsi_ep_disconnect, + .session_recovery_timedout = iscsi_session_recovery_timedout, + .bsg_request = beiscsi_bsg_request, +}; + +static struct pci_driver beiscsi_pci_driver = { + .name = DRV_NAME, + .probe = beiscsi_dev_probe, + .remove = beiscsi_remove, + .shutdown = beiscsi_shutdown, + .id_table = beiscsi_pci_id_table, + .err_handler = &beiscsi_eeh_handlers +}; + + +static int __init beiscsi_module_init(void) +{ + int ret; + + beiscsi_scsi_transport = + iscsi_register_transport(&beiscsi_iscsi_transport); + if (!beiscsi_scsi_transport) { + printk(KERN_ERR + "beiscsi_module_init - Unable to register beiscsi transport.\n"); + return -ENOMEM; + } + printk(KERN_INFO "In beiscsi_module_init, tt=%p\n", + &beiscsi_iscsi_transport); + + ret = pci_register_driver(&beiscsi_pci_driver); + if (ret) { + printk(KERN_ERR + "beiscsi_module_init - Unable to register beiscsi pci driver.\n"); + goto unregister_iscsi_transport; + } + return 0; + +unregister_iscsi_transport: + iscsi_unregister_transport(&beiscsi_iscsi_transport); + return ret; +} + +static void __exit beiscsi_module_exit(void) +{ + pci_unregister_driver(&beiscsi_pci_driver); + iscsi_unregister_transport(&beiscsi_iscsi_transport); +} + +module_init(beiscsi_module_init); +module_exit(beiscsi_module_exit); |