diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/pcie.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/pcie.c | 2740 |
1 files changed, 0 insertions, 2740 deletions
diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c deleted file mode 100644 index d186d2864..000000000 --- a/drivers/net/wireless/mwifiex/pcie.c +++ /dev/null @@ -1,2740 +0,0 @@ -/* - * Marvell Wireless LAN device driver: PCIE specific handling - * - * Copyright (C) 2011-2014, Marvell International Ltd. - * - * This software file (the "File") is distributed by Marvell International - * Ltd. under the terms of the GNU General Public License Version 2, June 1991 - * (the "License"). You may use, redistribute and/or modify this File in - * accordance with the terms and conditions of the License, a copy of which - * is available by writing to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the - * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. - * - * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE - * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE - * ARE EXPRESSLY DISCLAIMED. The License provides additional details about - * this warranty disclaimer. - */ - -#include <linux/firmware.h> - -#include "decl.h" -#include "ioctl.h" -#include "util.h" -#include "fw.h" -#include "main.h" -#include "wmm.h" -#include "11n.h" -#include "pcie.h" - -#define PCIE_VERSION "1.0" -#define DRV_NAME "Marvell mwifiex PCIe" - -static u8 user_rmmod; - -static struct mwifiex_if_ops pcie_ops; - -static struct semaphore add_remove_card_sem; - -static struct memory_type_mapping mem_type_mapping_tbl[] = { - {"ITCM", NULL, 0, 0xF0}, - {"DTCM", NULL, 0, 0xF1}, - {"SQRAM", NULL, 0, 0xF2}, - {"IRAM", NULL, 0, 0xF3}, - {"APU", NULL, 0, 0xF4}, - {"CIU", NULL, 0, 0xF5}, - {"ICU", NULL, 0, 0xF6}, - {"MAC", NULL, 0, 0xF7}, -}; - -static int -mwifiex_map_pci_memory(struct mwifiex_adapter *adapter, struct sk_buff *skb, - size_t size, int flags) -{ - struct pcie_service_card *card = adapter->card; - struct mwifiex_dma_mapping mapping; - - mapping.addr = pci_map_single(card->dev, skb->data, size, flags); - if (pci_dma_mapping_error(card->dev, mapping.addr)) { - mwifiex_dbg(adapter, ERROR, "failed to map pci memory!\n"); - return -1; - } - mapping.len = size; - mwifiex_store_mapping(skb, &mapping); - return 0; -} - -static void mwifiex_unmap_pci_memory(struct mwifiex_adapter *adapter, - struct sk_buff *skb, int flags) -{ - struct pcie_service_card *card = adapter->card; - struct mwifiex_dma_mapping mapping; - - mwifiex_get_mapping(skb, &mapping); - pci_unmap_single(card->dev, mapping.addr, mapping.len, flags); -} - -/* - * This function reads sleep cookie and checks if FW is ready - */ -static bool mwifiex_pcie_ok_to_access_hw(struct mwifiex_adapter *adapter) -{ - u32 *cookie_addr; - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - if (!reg->sleep_cookie) - return true; - - if (card->sleep_cookie_vbase) { - cookie_addr = (u32 *)card->sleep_cookie_vbase; - mwifiex_dbg(adapter, INFO, - "info: ACCESS_HW: sleep cookie=0x%x\n", - *cookie_addr); - if (*cookie_addr == FW_AWAKE_COOKIE) - return true; - } - - return false; -} - -#ifdef CONFIG_PM_SLEEP -/* - * Kernel needs to suspend all functions separately. Therefore all - * registered functions must have drivers with suspend and resume - * methods. Failing that the kernel simply removes the whole card. - * - * If already not suspended, this function allocates and sends a host - * sleep activate request to the firmware and turns off the traffic. - */ -static int mwifiex_pcie_suspend(struct device *dev) -{ - struct mwifiex_adapter *adapter; - struct pcie_service_card *card; - int hs_actived; - struct pci_dev *pdev = to_pci_dev(dev); - - if (pdev) { - card = pci_get_drvdata(pdev); - if (!card || !card->adapter) { - pr_err("Card or adapter structure is not valid\n"); - return 0; - } - } else { - pr_err("PCIE device is not specified\n"); - return 0; - } - - adapter = card->adapter; - - hs_actived = mwifiex_enable_hs(adapter); - - /* Indicate device suspended */ - adapter->is_suspended = true; - adapter->hs_enabling = false; - - return 0; -} - -/* - * Kernel needs to suspend all functions separately. Therefore all - * registered functions must have drivers with suspend and resume - * methods. Failing that the kernel simply removes the whole card. - * - * If already not resumed, this function turns on the traffic and - * sends a host sleep cancel request to the firmware. - */ -static int mwifiex_pcie_resume(struct device *dev) -{ - struct mwifiex_adapter *adapter; - struct pcie_service_card *card; - struct pci_dev *pdev = to_pci_dev(dev); - - if (pdev) { - card = pci_get_drvdata(pdev); - if (!card || !card->adapter) { - pr_err("Card or adapter structure is not valid\n"); - return 0; - } - } else { - pr_err("PCIE device is not specified\n"); - return 0; - } - - adapter = card->adapter; - - if (!adapter->is_suspended) { - mwifiex_dbg(adapter, WARN, - "Device already resumed\n"); - return 0; - } - - adapter->is_suspended = false; - - mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), - MWIFIEX_ASYNC_CMD); - - return 0; -} -#endif - -/* - * This function probes an mwifiex device and registers it. It allocates - * the card structure, enables PCIE function number and initiates the - * device registration and initialization procedure by adding a logical - * interface. - */ -static int mwifiex_pcie_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct pcie_service_card *card; - - pr_debug("info: vendor=0x%4.04X device=0x%4.04X rev=%d\n", - pdev->vendor, pdev->device, pdev->revision); - - card = kzalloc(sizeof(struct pcie_service_card), GFP_KERNEL); - if (!card) - return -ENOMEM; - - card->dev = pdev; - - if (ent->driver_data) { - struct mwifiex_pcie_device *data = (void *)ent->driver_data; - card->pcie.firmware = data->firmware; - card->pcie.reg = data->reg; - card->pcie.blksz_fw_dl = data->blksz_fw_dl; - card->pcie.tx_buf_size = data->tx_buf_size; - card->pcie.can_dump_fw = data->can_dump_fw; - card->pcie.can_ext_scan = data->can_ext_scan; - } - - if (mwifiex_add_card(card, &add_remove_card_sem, &pcie_ops, - MWIFIEX_PCIE)) { - pr_err("%s failed\n", __func__); - kfree(card); - return -1; - } - - return 0; -} - -/* - * This function removes the interface and frees up the card structure. - */ -static void mwifiex_pcie_remove(struct pci_dev *pdev) -{ - struct pcie_service_card *card; - struct mwifiex_adapter *adapter; - struct mwifiex_private *priv; - - card = pci_get_drvdata(pdev); - if (!card) - return; - - adapter = card->adapter; - if (!adapter || !adapter->priv_num) - return; - - if (user_rmmod) { -#ifdef CONFIG_PM_SLEEP - if (adapter->is_suspended) - mwifiex_pcie_resume(&pdev->dev); -#endif - - mwifiex_deauthenticate_all(adapter); - - priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); - - mwifiex_disable_auto_ds(priv); - - mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN); - } - - mwifiex_remove_card(card->adapter, &add_remove_card_sem); -} - -static void mwifiex_pcie_shutdown(struct pci_dev *pdev) -{ - user_rmmod = 1; - mwifiex_pcie_remove(pdev); - - return; -} - -static const struct pci_device_id mwifiex_ids[] = { - { - PCIE_VENDOR_ID_MARVELL, PCIE_DEVICE_ID_MARVELL_88W8766P, - PCI_ANY_ID, PCI_ANY_ID, 0, 0, - .driver_data = (unsigned long)&mwifiex_pcie8766, - }, - { - PCIE_VENDOR_ID_MARVELL, PCIE_DEVICE_ID_MARVELL_88W8897, - PCI_ANY_ID, PCI_ANY_ID, 0, 0, - .driver_data = (unsigned long)&mwifiex_pcie8897, - }, - { - PCIE_VENDOR_ID_MARVELL, PCIE_DEVICE_ID_MARVELL_88W8997, - PCI_ANY_ID, PCI_ANY_ID, 0, 0, - .driver_data = (unsigned long)&mwifiex_pcie8997, - }, - {}, -}; - -MODULE_DEVICE_TABLE(pci, mwifiex_ids); - -#ifdef CONFIG_PM_SLEEP -/* Power Management Hooks */ -static SIMPLE_DEV_PM_OPS(mwifiex_pcie_pm_ops, mwifiex_pcie_suspend, - mwifiex_pcie_resume); -#endif - -/* PCI Device Driver */ -static struct pci_driver __refdata mwifiex_pcie = { - .name = "mwifiex_pcie", - .id_table = mwifiex_ids, - .probe = mwifiex_pcie_probe, - .remove = mwifiex_pcie_remove, -#ifdef CONFIG_PM_SLEEP - .driver = { - .pm = &mwifiex_pcie_pm_ops, - }, -#endif - .shutdown = mwifiex_pcie_shutdown, -}; - -/* - * This function writes data into PCIE card register. - */ -static int mwifiex_write_reg(struct mwifiex_adapter *adapter, int reg, u32 data) -{ - struct pcie_service_card *card = adapter->card; - - iowrite32(data, card->pci_mmap1 + reg); - - return 0; -} - -/* - * This function reads data from PCIE card register. - */ -static int mwifiex_read_reg(struct mwifiex_adapter *adapter, int reg, u32 *data) -{ - struct pcie_service_card *card = adapter->card; - - *data = ioread32(card->pci_mmap1 + reg); - - return 0; -} - -/* This function reads u8 data from PCIE card register. */ -static int mwifiex_read_reg_byte(struct mwifiex_adapter *adapter, - int reg, u8 *data) -{ - struct pcie_service_card *card = adapter->card; - - *data = ioread8(card->pci_mmap1 + reg); - - return 0; -} - -/* - * This function adds delay loop to ensure FW is awake before proceeding. - */ -static void mwifiex_pcie_dev_wakeup_delay(struct mwifiex_adapter *adapter) -{ - int i = 0; - - while (mwifiex_pcie_ok_to_access_hw(adapter)) { - i++; - usleep_range(10, 20); - /* 50ms max wait */ - if (i == 5000) - break; - } - - return; -} - -static void mwifiex_delay_for_sleep_cookie(struct mwifiex_adapter *adapter, - u32 max_delay_loop_cnt) -{ - struct pcie_service_card *card = adapter->card; - u8 *buffer; - u32 sleep_cookie, count; - - for (count = 0; count < max_delay_loop_cnt; count++) { - buffer = card->cmdrsp_buf->data - INTF_HEADER_LEN; - sleep_cookie = *(u32 *)buffer; - - if (sleep_cookie == MWIFIEX_DEF_SLEEP_COOKIE) { - mwifiex_dbg(adapter, INFO, - "sleep cookie found at count %d\n", count); - break; - } - usleep_range(20, 30); - } - - if (count >= max_delay_loop_cnt) - mwifiex_dbg(adapter, INFO, - "max count reached while accessing sleep cookie\n"); -} - -/* This function wakes up the card by reading fw_status register. */ -static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) -{ - u32 fw_status; - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - mwifiex_dbg(adapter, EVENT, - "event: Wakeup device...\n"); - - if (reg->sleep_cookie) - mwifiex_pcie_dev_wakeup_delay(adapter); - - /* Reading fw_status register will wakeup device */ - if (mwifiex_read_reg(adapter, reg->fw_status, &fw_status)) { - mwifiex_dbg(adapter, ERROR, - "Reading fw_status register failed\n"); - return -1; - } - - if (reg->sleep_cookie) { - mwifiex_pcie_dev_wakeup_delay(adapter); - mwifiex_dbg(adapter, INFO, - "PCIE wakeup: Setting PS_STATE_AWAKE\n"); - adapter->ps_state = PS_STATE_AWAKE; - } - - return 0; -} - -/* - * This function is called after the card has woken up. - * - * The card configuration register is reset. - */ -static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) -{ - mwifiex_dbg(adapter, CMD, - "cmd: Wakeup device completed\n"); - - return 0; -} - -/* - * This function disables the host interrupt. - * - * The host interrupt mask is read, the disable bit is reset and - * written back to the card host interrupt mask register. - */ -static int mwifiex_pcie_disable_host_int(struct mwifiex_adapter *adapter) -{ - if (mwifiex_pcie_ok_to_access_hw(adapter)) { - if (mwifiex_write_reg(adapter, PCIE_HOST_INT_MASK, - 0x00000000)) { - mwifiex_dbg(adapter, ERROR, - "Disable host interrupt failed\n"); - return -1; - } - } - - return 0; -} - -/* - * This function enables the host interrupt. - * - * The host interrupt enable mask is written to the card - * host interrupt mask register. - */ -static int mwifiex_pcie_enable_host_int(struct mwifiex_adapter *adapter) -{ - if (mwifiex_pcie_ok_to_access_hw(adapter)) { - /* Simply write the mask to the register */ - if (mwifiex_write_reg(adapter, PCIE_HOST_INT_MASK, - HOST_INTR_MASK)) { - mwifiex_dbg(adapter, ERROR, - "Enable host interrupt failed\n"); - return -1; - } - } - - return 0; -} - -/* - * This function initializes TX buffer ring descriptors - */ -static int mwifiex_init_txq_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - struct mwifiex_pcie_buf_desc *desc; - struct mwifiex_pfu_buf_desc *desc2; - int i; - - for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) { - card->tx_buf_list[i] = NULL; - if (reg->pfu_enabled) { - card->txbd_ring[i] = (void *)card->txbd_ring_vbase + - (sizeof(*desc2) * i); - desc2 = card->txbd_ring[i]; - memset(desc2, 0, sizeof(*desc2)); - } else { - card->txbd_ring[i] = (void *)card->txbd_ring_vbase + - (sizeof(*desc) * i); - desc = card->txbd_ring[i]; - memset(desc, 0, sizeof(*desc)); - } - } - - return 0; -} - -/* This function initializes RX buffer ring descriptors. Each SKB is allocated - * here and after mapping PCI memory, its physical address is assigned to - * PCIE Rx buffer descriptor's physical address. - */ -static int mwifiex_init_rxq_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - struct sk_buff *skb; - struct mwifiex_pcie_buf_desc *desc; - struct mwifiex_pfu_buf_desc *desc2; - dma_addr_t buf_pa; - int i; - - for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) { - /* Allocate skb here so that firmware can DMA data from it */ - skb = mwifiex_alloc_dma_align_buf(MWIFIEX_RX_DATA_BUF_SIZE, - GFP_KERNEL | GFP_DMA); - if (!skb) { - mwifiex_dbg(adapter, ERROR, - "Unable to allocate skb for RX ring.\n"); - kfree(card->rxbd_ring_vbase); - return -ENOMEM; - } - - if (mwifiex_map_pci_memory(adapter, skb, - MWIFIEX_RX_DATA_BUF_SIZE, - PCI_DMA_FROMDEVICE)) - return -1; - - buf_pa = MWIFIEX_SKB_DMA_ADDR(skb); - - mwifiex_dbg(adapter, INFO, - "info: RX ring: skb=%p len=%d data=%p buf_pa=%#x:%x\n", - skb, skb->len, skb->data, (u32)buf_pa, - (u32)((u64)buf_pa >> 32)); - - card->rx_buf_list[i] = skb; - if (reg->pfu_enabled) { - card->rxbd_ring[i] = (void *)card->rxbd_ring_vbase + - (sizeof(*desc2) * i); - desc2 = card->rxbd_ring[i]; - desc2->paddr = buf_pa; - desc2->len = (u16)skb->len; - desc2->frag_len = (u16)skb->len; - desc2->flags = reg->ring_flag_eop | reg->ring_flag_sop; - desc2->offset = 0; - } else { - card->rxbd_ring[i] = (void *)(card->rxbd_ring_vbase + - (sizeof(*desc) * i)); - desc = card->rxbd_ring[i]; - desc->paddr = buf_pa; - desc->len = (u16)skb->len; - desc->flags = 0; - } - } - - return 0; -} - -/* This function initializes event buffer ring descriptors. Each SKB is - * allocated here and after mapping PCI memory, its physical address is assigned - * to PCIE Rx buffer descriptor's physical address - */ -static int mwifiex_pcie_init_evt_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - struct mwifiex_evt_buf_desc *desc; - struct sk_buff *skb; - dma_addr_t buf_pa; - int i; - - for (i = 0; i < MWIFIEX_MAX_EVT_BD; i++) { - /* Allocate skb here so that firmware can DMA data from it */ - skb = dev_alloc_skb(MAX_EVENT_SIZE); - if (!skb) { - mwifiex_dbg(adapter, ERROR, - "Unable to allocate skb for EVENT buf.\n"); - kfree(card->evtbd_ring_vbase); - return -ENOMEM; - } - skb_put(skb, MAX_EVENT_SIZE); - - if (mwifiex_map_pci_memory(adapter, skb, MAX_EVENT_SIZE, - PCI_DMA_FROMDEVICE)) - return -1; - - buf_pa = MWIFIEX_SKB_DMA_ADDR(skb); - - mwifiex_dbg(adapter, EVENT, - "info: EVT ring: skb=%p len=%d data=%p buf_pa=%#x:%x\n", - skb, skb->len, skb->data, (u32)buf_pa, - (u32)((u64)buf_pa >> 32)); - - card->evt_buf_list[i] = skb; - card->evtbd_ring[i] = (void *)(card->evtbd_ring_vbase + - (sizeof(*desc) * i)); - desc = card->evtbd_ring[i]; - desc->paddr = buf_pa; - desc->len = (u16)skb->len; - desc->flags = 0; - } - - return 0; -} - -/* This function cleans up TX buffer rings. If any of the buffer list has valid - * SKB address, associated SKB is freed. - */ -static void mwifiex_cleanup_txq_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - struct sk_buff *skb; - struct mwifiex_pcie_buf_desc *desc; - struct mwifiex_pfu_buf_desc *desc2; - int i; - - for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) { - if (reg->pfu_enabled) { - desc2 = card->txbd_ring[i]; - if (card->tx_buf_list[i]) { - skb = card->tx_buf_list[i]; - mwifiex_unmap_pci_memory(adapter, skb, - PCI_DMA_TODEVICE); - dev_kfree_skb_any(skb); - } - memset(desc2, 0, sizeof(*desc2)); - } else { - desc = card->txbd_ring[i]; - if (card->tx_buf_list[i]) { - skb = card->tx_buf_list[i]; - mwifiex_unmap_pci_memory(adapter, skb, - PCI_DMA_TODEVICE); - dev_kfree_skb_any(skb); - } - memset(desc, 0, sizeof(*desc)); - } - card->tx_buf_list[i] = NULL; - } - - return; -} - -/* This function cleans up RX buffer rings. If any of the buffer list has valid - * SKB address, associated SKB is freed. - */ -static void mwifiex_cleanup_rxq_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - struct mwifiex_pcie_buf_desc *desc; - struct mwifiex_pfu_buf_desc *desc2; - struct sk_buff *skb; - int i; - - for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) { - if (reg->pfu_enabled) { - desc2 = card->rxbd_ring[i]; - if (card->rx_buf_list[i]) { - skb = card->rx_buf_list[i]; - mwifiex_unmap_pci_memory(adapter, skb, - PCI_DMA_FROMDEVICE); - dev_kfree_skb_any(skb); - } - memset(desc2, 0, sizeof(*desc2)); - } else { - desc = card->rxbd_ring[i]; - if (card->rx_buf_list[i]) { - skb = card->rx_buf_list[i]; - mwifiex_unmap_pci_memory(adapter, skb, - PCI_DMA_FROMDEVICE); - dev_kfree_skb_any(skb); - } - memset(desc, 0, sizeof(*desc)); - } - card->rx_buf_list[i] = NULL; - } - - return; -} - -/* This function cleans up event buffer rings. If any of the buffer list has - * valid SKB address, associated SKB is freed. - */ -static void mwifiex_cleanup_evt_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - struct mwifiex_evt_buf_desc *desc; - struct sk_buff *skb; - int i; - - for (i = 0; i < MWIFIEX_MAX_EVT_BD; i++) { - desc = card->evtbd_ring[i]; - if (card->evt_buf_list[i]) { - skb = card->evt_buf_list[i]; - mwifiex_unmap_pci_memory(adapter, skb, - PCI_DMA_FROMDEVICE); - dev_kfree_skb_any(skb); - } - card->evt_buf_list[i] = NULL; - memset(desc, 0, sizeof(*desc)); - } - - return; -} - -/* This function creates buffer descriptor ring for TX - */ -static int mwifiex_pcie_create_txbd_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - /* - * driver maintaines the write pointer and firmware maintaines the read - * pointer. The write pointer starts at 0 (zero) while the read pointer - * starts at zero with rollover bit set - */ - card->txbd_wrptr = 0; - - if (reg->pfu_enabled) - card->txbd_rdptr = 0; - else - card->txbd_rdptr |= reg->tx_rollover_ind; - - /* allocate shared memory for the BD ring and divide the same in to - several descriptors */ - if (reg->pfu_enabled) - card->txbd_ring_size = sizeof(struct mwifiex_pfu_buf_desc) * - MWIFIEX_MAX_TXRX_BD; - else - card->txbd_ring_size = sizeof(struct mwifiex_pcie_buf_desc) * - MWIFIEX_MAX_TXRX_BD; - - mwifiex_dbg(adapter, INFO, - "info: txbd_ring: Allocating %d bytes\n", - card->txbd_ring_size); - card->txbd_ring_vbase = pci_alloc_consistent(card->dev, - card->txbd_ring_size, - &card->txbd_ring_pbase); - if (!card->txbd_ring_vbase) { - mwifiex_dbg(adapter, ERROR, - "allocate consistent memory (%d bytes) failed!\n", - card->txbd_ring_size); - return -ENOMEM; - } - mwifiex_dbg(adapter, DATA, - "info: txbd_ring - base: %p, pbase: %#x:%x, len: %x\n", - card->txbd_ring_vbase, (unsigned int)card->txbd_ring_pbase, - (u32)((u64)card->txbd_ring_pbase >> 32), - card->txbd_ring_size); - - return mwifiex_init_txq_ring(adapter); -} - -static int mwifiex_pcie_delete_txbd_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - mwifiex_cleanup_txq_ring(adapter); - - if (card->txbd_ring_vbase) - pci_free_consistent(card->dev, card->txbd_ring_size, - card->txbd_ring_vbase, - card->txbd_ring_pbase); - card->txbd_ring_size = 0; - card->txbd_wrptr = 0; - card->txbd_rdptr = 0 | reg->tx_rollover_ind; - card->txbd_ring_vbase = NULL; - card->txbd_ring_pbase = 0; - - return 0; -} - -/* - * This function creates buffer descriptor ring for RX - */ -static int mwifiex_pcie_create_rxbd_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - /* - * driver maintaines the read pointer and firmware maintaines the write - * pointer. The write pointer starts at 0 (zero) while the read pointer - * starts at zero with rollover bit set - */ - card->rxbd_wrptr = 0; - card->rxbd_rdptr = reg->rx_rollover_ind; - - if (reg->pfu_enabled) - card->rxbd_ring_size = sizeof(struct mwifiex_pfu_buf_desc) * - MWIFIEX_MAX_TXRX_BD; - else - card->rxbd_ring_size = sizeof(struct mwifiex_pcie_buf_desc) * - MWIFIEX_MAX_TXRX_BD; - - mwifiex_dbg(adapter, INFO, - "info: rxbd_ring: Allocating %d bytes\n", - card->rxbd_ring_size); - card->rxbd_ring_vbase = pci_alloc_consistent(card->dev, - card->rxbd_ring_size, - &card->rxbd_ring_pbase); - if (!card->rxbd_ring_vbase) { - mwifiex_dbg(adapter, ERROR, - "allocate consistent memory (%d bytes) failed!\n", - card->rxbd_ring_size); - return -ENOMEM; - } - - mwifiex_dbg(adapter, DATA, - "info: rxbd_ring - base: %p, pbase: %#x:%x, len: %#x\n", - card->rxbd_ring_vbase, (u32)card->rxbd_ring_pbase, - (u32)((u64)card->rxbd_ring_pbase >> 32), - card->rxbd_ring_size); - - return mwifiex_init_rxq_ring(adapter); -} - -/* - * This function deletes Buffer descriptor ring for RX - */ -static int mwifiex_pcie_delete_rxbd_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - mwifiex_cleanup_rxq_ring(adapter); - - if (card->rxbd_ring_vbase) - pci_free_consistent(card->dev, card->rxbd_ring_size, - card->rxbd_ring_vbase, - card->rxbd_ring_pbase); - card->rxbd_ring_size = 0; - card->rxbd_wrptr = 0; - card->rxbd_rdptr = 0 | reg->rx_rollover_ind; - card->rxbd_ring_vbase = NULL; - card->rxbd_ring_pbase = 0; - - return 0; -} - -/* - * This function creates buffer descriptor ring for Events - */ -static int mwifiex_pcie_create_evtbd_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - /* - * driver maintaines the read pointer and firmware maintaines the write - * pointer. The write pointer starts at 0 (zero) while the read pointer - * starts at zero with rollover bit set - */ - card->evtbd_wrptr = 0; - card->evtbd_rdptr = reg->evt_rollover_ind; - - card->evtbd_ring_size = sizeof(struct mwifiex_evt_buf_desc) * - MWIFIEX_MAX_EVT_BD; - - mwifiex_dbg(adapter, INFO, - "info: evtbd_ring: Allocating %d bytes\n", - card->evtbd_ring_size); - card->evtbd_ring_vbase = pci_alloc_consistent(card->dev, - card->evtbd_ring_size, - &card->evtbd_ring_pbase); - if (!card->evtbd_ring_vbase) { - mwifiex_dbg(adapter, ERROR, - "allocate consistent memory (%d bytes) failed!\n", - card->evtbd_ring_size); - return -ENOMEM; - } - - mwifiex_dbg(adapter, EVENT, - "info: CMDRSP/EVT bd_ring - base: %p pbase: %#x:%x len: %#x\n", - card->evtbd_ring_vbase, (u32)card->evtbd_ring_pbase, - (u32)((u64)card->evtbd_ring_pbase >> 32), - card->evtbd_ring_size); - - return mwifiex_pcie_init_evt_ring(adapter); -} - -/* - * This function deletes Buffer descriptor ring for Events - */ -static int mwifiex_pcie_delete_evtbd_ring(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - mwifiex_cleanup_evt_ring(adapter); - - if (card->evtbd_ring_vbase) - pci_free_consistent(card->dev, card->evtbd_ring_size, - card->evtbd_ring_vbase, - card->evtbd_ring_pbase); - card->evtbd_wrptr = 0; - card->evtbd_rdptr = 0 | reg->evt_rollover_ind; - card->evtbd_ring_size = 0; - card->evtbd_ring_vbase = NULL; - card->evtbd_ring_pbase = 0; - - return 0; -} - -/* - * This function allocates a buffer for CMDRSP - */ -static int mwifiex_pcie_alloc_cmdrsp_buf(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - struct sk_buff *skb; - - /* Allocate memory for receiving command response data */ - skb = dev_alloc_skb(MWIFIEX_UPLD_SIZE); - if (!skb) { - mwifiex_dbg(adapter, ERROR, - "Unable to allocate skb for command response data.\n"); - return -ENOMEM; - } - skb_put(skb, MWIFIEX_UPLD_SIZE); - if (mwifiex_map_pci_memory(adapter, skb, MWIFIEX_UPLD_SIZE, - PCI_DMA_FROMDEVICE)) - return -1; - - card->cmdrsp_buf = skb; - - return 0; -} - -/* - * This function deletes a buffer for CMDRSP - */ -static int mwifiex_pcie_delete_cmdrsp_buf(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card; - - if (!adapter) - return 0; - - card = adapter->card; - - if (card && card->cmdrsp_buf) { - mwifiex_unmap_pci_memory(adapter, card->cmdrsp_buf, - PCI_DMA_FROMDEVICE); - dev_kfree_skb_any(card->cmdrsp_buf); - } - - if (card && card->cmd_buf) { - mwifiex_unmap_pci_memory(adapter, card->cmd_buf, - PCI_DMA_TODEVICE); - } - return 0; -} - -/* - * This function allocates a buffer for sleep cookie - */ -static int mwifiex_pcie_alloc_sleep_cookie_buf(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - - card->sleep_cookie_vbase = pci_alloc_consistent(card->dev, sizeof(u32), - &card->sleep_cookie_pbase); - if (!card->sleep_cookie_vbase) { - mwifiex_dbg(adapter, ERROR, - "pci_alloc_consistent failed!\n"); - return -ENOMEM; - } - /* Init val of Sleep Cookie */ - *(u32 *)card->sleep_cookie_vbase = FW_AWAKE_COOKIE; - - mwifiex_dbg(adapter, INFO, - "alloc_scook: sleep cookie=0x%x\n", - *((u32 *)card->sleep_cookie_vbase)); - - return 0; -} - -/* - * This function deletes buffer for sleep cookie - */ -static int mwifiex_pcie_delete_sleep_cookie_buf(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card; - - if (!adapter) - return 0; - - card = adapter->card; - - if (card && card->sleep_cookie_vbase) { - pci_free_consistent(card->dev, sizeof(u32), - card->sleep_cookie_vbase, - card->sleep_cookie_pbase); - card->sleep_cookie_vbase = NULL; - } - - return 0; -} - -/* This function flushes the TX buffer descriptor ring - * This function defined as handler is also called while cleaning TXRX - * during disconnect/ bss stop. - */ -static int mwifiex_clean_pcie_ring_buf(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - - if (!mwifiex_pcie_txbd_empty(card, card->txbd_rdptr)) { - card->txbd_flush = 1; - /* write pointer already set at last send - * send dnld-rdy intr again, wait for completion. - */ - if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT, - CPU_INTR_DNLD_RDY)) { - mwifiex_dbg(adapter, ERROR, - "failed to assert dnld-rdy interrupt.\n"); - return -1; - } - } - return 0; -} - -/* - * This function unmaps and frees downloaded data buffer - */ -static int mwifiex_pcie_send_data_complete(struct mwifiex_adapter *adapter) -{ - struct sk_buff *skb; - u32 wrdoneidx, rdptr, num_tx_buffs, unmap_count = 0; - struct mwifiex_pcie_buf_desc *desc; - struct mwifiex_pfu_buf_desc *desc2; - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - if (!mwifiex_pcie_ok_to_access_hw(adapter)) - mwifiex_pm_wakeup_card(adapter); - - /* Read the TX ring read pointer set by firmware */ - if (mwifiex_read_reg(adapter, reg->tx_rdptr, &rdptr)) { - mwifiex_dbg(adapter, ERROR, - "SEND COMP: failed to read reg->tx_rdptr\n"); - return -1; - } - - mwifiex_dbg(adapter, DATA, - "SEND COMP: rdptr_prev=0x%x, rdptr=0x%x\n", - card->txbd_rdptr, rdptr); - - num_tx_buffs = MWIFIEX_MAX_TXRX_BD << reg->tx_start_ptr; - /* free from previous txbd_rdptr to current txbd_rdptr */ - while (((card->txbd_rdptr & reg->tx_mask) != - (rdptr & reg->tx_mask)) || - ((card->txbd_rdptr & reg->tx_rollover_ind) != - (rdptr & reg->tx_rollover_ind))) { - wrdoneidx = (card->txbd_rdptr & reg->tx_mask) >> - reg->tx_start_ptr; - - skb = card->tx_buf_list[wrdoneidx]; - - if (skb) { - mwifiex_dbg(adapter, DATA, - "SEND COMP: Detach skb %p at txbd_rdidx=%d\n", - skb, wrdoneidx); - mwifiex_unmap_pci_memory(adapter, skb, - PCI_DMA_TODEVICE); - - unmap_count++; - - if (card->txbd_flush) - mwifiex_write_data_complete(adapter, skb, 0, - -1); - else - mwifiex_write_data_complete(adapter, skb, 0, 0); - } - - card->tx_buf_list[wrdoneidx] = NULL; - - if (reg->pfu_enabled) { - desc2 = card->txbd_ring[wrdoneidx]; - memset(desc2, 0, sizeof(*desc2)); - } else { - desc = card->txbd_ring[wrdoneidx]; - memset(desc, 0, sizeof(*desc)); - } - switch (card->dev->device) { - case PCIE_DEVICE_ID_MARVELL_88W8766P: - card->txbd_rdptr++; - break; - case PCIE_DEVICE_ID_MARVELL_88W8897: - case PCIE_DEVICE_ID_MARVELL_88W8997: - card->txbd_rdptr += reg->ring_tx_start_ptr; - break; - } - - - if ((card->txbd_rdptr & reg->tx_mask) == num_tx_buffs) - card->txbd_rdptr = ((card->txbd_rdptr & - reg->tx_rollover_ind) ^ - reg->tx_rollover_ind); - } - - if (unmap_count) - adapter->data_sent = false; - - if (card->txbd_flush) { - if (mwifiex_pcie_txbd_empty(card, card->txbd_rdptr)) - card->txbd_flush = 0; - else - mwifiex_clean_pcie_ring_buf(adapter); - } - - return 0; -} - -/* This function sends data buffer to device. First 4 bytes of payload - * are filled with payload length and payload type. Then this payload - * is mapped to PCI device memory. Tx ring pointers are advanced accordingly. - * Download ready interrupt to FW is deffered if Tx ring is not full and - * additional payload can be accomodated. - * Caller must ensure tx_param parameter to this function is not NULL. - */ -static int -mwifiex_pcie_send_data(struct mwifiex_adapter *adapter, struct sk_buff *skb, - struct mwifiex_tx_param *tx_param) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - u32 wrindx, num_tx_buffs, rx_val; - int ret; - dma_addr_t buf_pa; - struct mwifiex_pcie_buf_desc *desc = NULL; - struct mwifiex_pfu_buf_desc *desc2 = NULL; - __le16 *tmp; - - if (!(skb->data && skb->len)) { - mwifiex_dbg(adapter, ERROR, - "%s(): invalid parameter <%p, %#x>\n", - __func__, skb->data, skb->len); - return -1; - } - - if (!mwifiex_pcie_ok_to_access_hw(adapter)) - mwifiex_pm_wakeup_card(adapter); - - num_tx_buffs = MWIFIEX_MAX_TXRX_BD << reg->tx_start_ptr; - mwifiex_dbg(adapter, DATA, - "info: SEND DATA: <Rd: %#x, Wr: %#x>\n", - card->txbd_rdptr, card->txbd_wrptr); - if (mwifiex_pcie_txbd_not_full(card)) { - u8 *payload; - - adapter->data_sent = true; - payload = skb->data; - tmp = (__le16 *)&payload[0]; - *tmp = cpu_to_le16((u16)skb->len); - tmp = (__le16 *)&payload[2]; - *tmp = cpu_to_le16(MWIFIEX_TYPE_DATA); - - if (mwifiex_map_pci_memory(adapter, skb, skb->len, - PCI_DMA_TODEVICE)) - return -1; - - wrindx = (card->txbd_wrptr & reg->tx_mask) >> reg->tx_start_ptr; - buf_pa = MWIFIEX_SKB_DMA_ADDR(skb); - card->tx_buf_list[wrindx] = skb; - - if (reg->pfu_enabled) { - desc2 = card->txbd_ring[wrindx]; - desc2->paddr = buf_pa; - desc2->len = (u16)skb->len; - desc2->frag_len = (u16)skb->len; - desc2->offset = 0; - desc2->flags = MWIFIEX_BD_FLAG_FIRST_DESC | - MWIFIEX_BD_FLAG_LAST_DESC; - } else { - desc = card->txbd_ring[wrindx]; - desc->paddr = buf_pa; - desc->len = (u16)skb->len; - desc->flags = MWIFIEX_BD_FLAG_FIRST_DESC | - MWIFIEX_BD_FLAG_LAST_DESC; - } - - switch (card->dev->device) { - case PCIE_DEVICE_ID_MARVELL_88W8766P: - card->txbd_wrptr++; - break; - case PCIE_DEVICE_ID_MARVELL_88W8897: - case PCIE_DEVICE_ID_MARVELL_88W8997: - card->txbd_wrptr += reg->ring_tx_start_ptr; - break; - } - - if ((card->txbd_wrptr & reg->tx_mask) == num_tx_buffs) - card->txbd_wrptr = ((card->txbd_wrptr & - reg->tx_rollover_ind) ^ - reg->tx_rollover_ind); - - rx_val = card->rxbd_rdptr & reg->rx_wrap_mask; - /* Write the TX ring write pointer in to reg->tx_wrptr */ - if (mwifiex_write_reg(adapter, reg->tx_wrptr, - card->txbd_wrptr | rx_val)) { - mwifiex_dbg(adapter, ERROR, - "SEND DATA: failed to write reg->tx_wrptr\n"); - ret = -1; - goto done_unmap; - } - if ((mwifiex_pcie_txbd_not_full(card)) && - tx_param->next_pkt_len) { - /* have more packets and TxBD still can hold more */ - mwifiex_dbg(adapter, DATA, - "SEND DATA: delay dnld-rdy interrupt.\n"); - adapter->data_sent = false; - } else { - /* Send the TX ready interrupt */ - if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT, - CPU_INTR_DNLD_RDY)) { - mwifiex_dbg(adapter, ERROR, - "SEND DATA: failed to assert dnld-rdy interrupt.\n"); - ret = -1; - goto done_unmap; - } - } - mwifiex_dbg(adapter, DATA, - "info: SEND DATA: Updated <Rd: %#x, Wr:\t" - "%#x> and sent packet to firmware successfully\n", - card->txbd_rdptr, card->txbd_wrptr); - } else { - mwifiex_dbg(adapter, DATA, - "info: TX Ring full, can't send packets to fw\n"); - adapter->data_sent = true; - /* Send the TX ready interrupt */ - if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT, - CPU_INTR_DNLD_RDY)) - mwifiex_dbg(adapter, ERROR, - "SEND DATA: failed to assert door-bell intr\n"); - return -EBUSY; - } - - return -EINPROGRESS; -done_unmap: - mwifiex_unmap_pci_memory(adapter, skb, PCI_DMA_TODEVICE); - card->tx_buf_list[wrindx] = NULL; - if (reg->pfu_enabled) - memset(desc2, 0, sizeof(*desc2)); - else - memset(desc, 0, sizeof(*desc)); - - return ret; -} - -/* - * This function handles received buffer ring and - * dispatches packets to upper - */ -static int mwifiex_pcie_process_recv_data(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - u32 wrptr, rd_index, tx_val; - dma_addr_t buf_pa; - int ret = 0; - struct sk_buff *skb_tmp = NULL; - struct mwifiex_pcie_buf_desc *desc; - struct mwifiex_pfu_buf_desc *desc2; - - if (!mwifiex_pcie_ok_to_access_hw(adapter)) - mwifiex_pm_wakeup_card(adapter); - - /* Read the RX ring Write pointer set by firmware */ - if (mwifiex_read_reg(adapter, reg->rx_wrptr, &wrptr)) { - mwifiex_dbg(adapter, ERROR, - "RECV DATA: failed to read reg->rx_wrptr\n"); - ret = -1; - goto done; - } - card->rxbd_wrptr = wrptr; - - while (((wrptr & reg->rx_mask) != - (card->rxbd_rdptr & reg->rx_mask)) || - ((wrptr & reg->rx_rollover_ind) == - (card->rxbd_rdptr & reg->rx_rollover_ind))) { - struct sk_buff *skb_data; - u16 rx_len; - __le16 pkt_len; - - rd_index = card->rxbd_rdptr & reg->rx_mask; - skb_data = card->rx_buf_list[rd_index]; - - /* If skb allocation was failed earlier for Rx packet, - * rx_buf_list[rd_index] would have been left with a NULL. - */ - if (!skb_data) - return -ENOMEM; - - mwifiex_unmap_pci_memory(adapter, skb_data, PCI_DMA_FROMDEVICE); - card->rx_buf_list[rd_index] = NULL; - - /* Get data length from interface header - - * first 2 bytes for len, next 2 bytes is for type - */ - pkt_len = *((__le16 *)skb_data->data); - rx_len = le16_to_cpu(pkt_len); - if (WARN_ON(rx_len <= INTF_HEADER_LEN || - rx_len > MWIFIEX_RX_DATA_BUF_SIZE)) { - mwifiex_dbg(adapter, ERROR, - "Invalid RX len %d, Rd=%#x, Wr=%#x\n", - rx_len, card->rxbd_rdptr, wrptr); - dev_kfree_skb_any(skb_data); - } else { - skb_put(skb_data, rx_len); - mwifiex_dbg(adapter, DATA, - "info: RECV DATA: Rd=%#x, Wr=%#x, Len=%d\n", - card->rxbd_rdptr, wrptr, rx_len); - skb_pull(skb_data, INTF_HEADER_LEN); - if (adapter->rx_work_enabled) { - skb_queue_tail(&adapter->rx_data_q, skb_data); - adapter->data_received = true; - atomic_inc(&adapter->rx_pending); - } else { - mwifiex_handle_rx_packet(adapter, skb_data); - } - } - - skb_tmp = mwifiex_alloc_dma_align_buf(MWIFIEX_RX_DATA_BUF_SIZE, - GFP_KERNEL | GFP_DMA); - if (!skb_tmp) { - mwifiex_dbg(adapter, ERROR, - "Unable to allocate skb.\n"); - return -ENOMEM; - } - - if (mwifiex_map_pci_memory(adapter, skb_tmp, - MWIFIEX_RX_DATA_BUF_SIZE, - PCI_DMA_FROMDEVICE)) - return -1; - - buf_pa = MWIFIEX_SKB_DMA_ADDR(skb_tmp); - - mwifiex_dbg(adapter, INFO, - "RECV DATA: Attach new sk_buff %p at rxbd_rdidx=%d\n", - skb_tmp, rd_index); - card->rx_buf_list[rd_index] = skb_tmp; - - if (reg->pfu_enabled) { - desc2 = card->rxbd_ring[rd_index]; - desc2->paddr = buf_pa; - desc2->len = skb_tmp->len; - desc2->frag_len = skb_tmp->len; - desc2->offset = 0; - desc2->flags = reg->ring_flag_sop | reg->ring_flag_eop; - } else { - desc = card->rxbd_ring[rd_index]; - desc->paddr = buf_pa; - desc->len = skb_tmp->len; - desc->flags = 0; - } - - if ((++card->rxbd_rdptr & reg->rx_mask) == - MWIFIEX_MAX_TXRX_BD) { - card->rxbd_rdptr = ((card->rxbd_rdptr & - reg->rx_rollover_ind) ^ - reg->rx_rollover_ind); - } - mwifiex_dbg(adapter, DATA, - "info: RECV DATA: <Rd: %#x, Wr: %#x>\n", - card->rxbd_rdptr, wrptr); - - tx_val = card->txbd_wrptr & reg->tx_wrap_mask; - /* Write the RX ring read pointer in to reg->rx_rdptr */ - if (mwifiex_write_reg(adapter, reg->rx_rdptr, - card->rxbd_rdptr | tx_val)) { - mwifiex_dbg(adapter, DATA, - "RECV DATA: failed to write reg->rx_rdptr\n"); - ret = -1; - goto done; - } - - /* Read the RX ring Write pointer set by firmware */ - if (mwifiex_read_reg(adapter, reg->rx_wrptr, &wrptr)) { - mwifiex_dbg(adapter, ERROR, - "RECV DATA: failed to read reg->rx_wrptr\n"); - ret = -1; - goto done; - } - mwifiex_dbg(adapter, DATA, - "info: RECV DATA: Rcvd packet from fw successfully\n"); - card->rxbd_wrptr = wrptr; - } - -done: - return ret; -} - -/* - * This function downloads the boot command to device - */ -static int -mwifiex_pcie_send_boot_cmd(struct mwifiex_adapter *adapter, struct sk_buff *skb) -{ - dma_addr_t buf_pa; - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - if (!(skb->data && skb->len)) { - mwifiex_dbg(adapter, ERROR, - "Invalid parameter in %s <%p. len %d>\n", - __func__, skb->data, skb->len); - return -1; - } - - if (mwifiex_map_pci_memory(adapter, skb, skb->len , PCI_DMA_TODEVICE)) - return -1; - - buf_pa = MWIFIEX_SKB_DMA_ADDR(skb); - - /* Write the lower 32bits of the physical address to low command - * address scratch register - */ - if (mwifiex_write_reg(adapter, reg->cmd_addr_lo, (u32)buf_pa)) { - mwifiex_dbg(adapter, ERROR, - "%s: failed to write download command to boot code.\n", - __func__); - mwifiex_unmap_pci_memory(adapter, skb, PCI_DMA_TODEVICE); - return -1; - } - - /* Write the upper 32bits of the physical address to high command - * address scratch register - */ - if (mwifiex_write_reg(adapter, reg->cmd_addr_hi, - (u32)((u64)buf_pa >> 32))) { - mwifiex_dbg(adapter, ERROR, - "%s: failed to write download command to boot code.\n", - __func__); - mwifiex_unmap_pci_memory(adapter, skb, PCI_DMA_TODEVICE); - return -1; - } - - /* Write the command length to cmd_size scratch register */ - if (mwifiex_write_reg(adapter, reg->cmd_size, skb->len)) { - mwifiex_dbg(adapter, ERROR, - "%s: failed to write command len to cmd_size scratch reg\n", - __func__); - mwifiex_unmap_pci_memory(adapter, skb, PCI_DMA_TODEVICE); - return -1; - } - - /* Ring the door bell */ - if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT, - CPU_INTR_DOOR_BELL)) { - mwifiex_dbg(adapter, ERROR, - "%s: failed to assert door-bell intr\n", __func__); - mwifiex_unmap_pci_memory(adapter, skb, PCI_DMA_TODEVICE); - return -1; - } - - return 0; -} - -/* This function init rx port in firmware which in turn enables to receive data - * from device before transmitting any packet. - */ -static int mwifiex_pcie_init_fw_port(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - int tx_wrap = card->txbd_wrptr & reg->tx_wrap_mask; - - /* Write the RX ring read pointer in to reg->rx_rdptr */ - if (mwifiex_write_reg(adapter, reg->rx_rdptr, card->rxbd_rdptr | - tx_wrap)) { - mwifiex_dbg(adapter, ERROR, - "RECV DATA: failed to write reg->rx_rdptr\n"); - return -1; - } - return 0; -} - -/* This function downloads commands to the device - */ -static int -mwifiex_pcie_send_cmd(struct mwifiex_adapter *adapter, struct sk_buff *skb) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - int ret = 0; - dma_addr_t cmd_buf_pa, cmdrsp_buf_pa; - u8 *payload = (u8 *)skb->data; - - if (!(skb->data && skb->len)) { - mwifiex_dbg(adapter, ERROR, - "Invalid parameter in %s <%p, %#x>\n", - __func__, skb->data, skb->len); - return -1; - } - - /* Make sure a command response buffer is available */ - if (!card->cmdrsp_buf) { - mwifiex_dbg(adapter, ERROR, - "No response buffer available, send command failed\n"); - return -EBUSY; - } - - if (!mwifiex_pcie_ok_to_access_hw(adapter)) - mwifiex_pm_wakeup_card(adapter); - - adapter->cmd_sent = true; - - *(__le16 *)&payload[0] = cpu_to_le16((u16)skb->len); - *(__le16 *)&payload[2] = cpu_to_le16(MWIFIEX_TYPE_CMD); - - if (mwifiex_map_pci_memory(adapter, skb, skb->len, PCI_DMA_TODEVICE)) - return -1; - - card->cmd_buf = skb; - - /* To send a command, the driver will: - 1. Write the 64bit physical address of the data buffer to - cmd response address low + cmd response address high - 2. Ring the door bell (i.e. set the door bell interrupt) - - In response to door bell interrupt, the firmware will perform - the DMA of the command packet (first header to obtain the total - length and then rest of the command). - */ - - if (card->cmdrsp_buf) { - cmdrsp_buf_pa = MWIFIEX_SKB_DMA_ADDR(card->cmdrsp_buf); - /* Write the lower 32bits of the cmdrsp buffer physical - address */ - if (mwifiex_write_reg(adapter, reg->cmdrsp_addr_lo, - (u32)cmdrsp_buf_pa)) { - mwifiex_dbg(adapter, ERROR, - "Failed to write download cmd to boot code.\n"); - ret = -1; - goto done; - } - /* Write the upper 32bits of the cmdrsp buffer physical - address */ - if (mwifiex_write_reg(adapter, reg->cmdrsp_addr_hi, - (u32)((u64)cmdrsp_buf_pa >> 32))) { - mwifiex_dbg(adapter, ERROR, - "Failed to write download cmd to boot code.\n"); - ret = -1; - goto done; - } - } - - cmd_buf_pa = MWIFIEX_SKB_DMA_ADDR(card->cmd_buf); - /* Write the lower 32bits of the physical address to reg->cmd_addr_lo */ - if (mwifiex_write_reg(adapter, reg->cmd_addr_lo, - (u32)cmd_buf_pa)) { - mwifiex_dbg(adapter, ERROR, - "Failed to write download cmd to boot code.\n"); - ret = -1; - goto done; - } - /* Write the upper 32bits of the physical address to reg->cmd_addr_hi */ - if (mwifiex_write_reg(adapter, reg->cmd_addr_hi, - (u32)((u64)cmd_buf_pa >> 32))) { - mwifiex_dbg(adapter, ERROR, - "Failed to write download cmd to boot code.\n"); - ret = -1; - goto done; - } - - /* Write the command length to reg->cmd_size */ - if (mwifiex_write_reg(adapter, reg->cmd_size, - card->cmd_buf->len)) { - mwifiex_dbg(adapter, ERROR, - "Failed to write cmd len to reg->cmd_size\n"); - ret = -1; - goto done; - } - - /* Ring the door bell */ - if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT, - CPU_INTR_DOOR_BELL)) { - mwifiex_dbg(adapter, ERROR, - "Failed to assert door-bell intr\n"); - ret = -1; - goto done; - } - -done: - if (ret) - adapter->cmd_sent = false; - - return 0; -} - -/* - * This function handles command complete interrupt - */ -static int mwifiex_pcie_process_cmd_complete(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - struct sk_buff *skb = card->cmdrsp_buf; - int count = 0; - u16 rx_len; - __le16 pkt_len; - - mwifiex_dbg(adapter, CMD, - "info: Rx CMD Response\n"); - - mwifiex_unmap_pci_memory(adapter, skb, PCI_DMA_FROMDEVICE); - - /* Unmap the command as a response has been received. */ - if (card->cmd_buf) { - mwifiex_unmap_pci_memory(adapter, card->cmd_buf, - PCI_DMA_TODEVICE); - card->cmd_buf = NULL; - } - - pkt_len = *((__le16 *)skb->data); - rx_len = le16_to_cpu(pkt_len); - skb_trim(skb, rx_len); - skb_pull(skb, INTF_HEADER_LEN); - - if (!adapter->curr_cmd) { - if (adapter->ps_state == PS_STATE_SLEEP_CFM) { - mwifiex_process_sleep_confirm_resp(adapter, skb->data, - skb->len); - mwifiex_pcie_enable_host_int(adapter); - if (mwifiex_write_reg(adapter, - PCIE_CPU_INT_EVENT, - CPU_INTR_SLEEP_CFM_DONE)) { - mwifiex_dbg(adapter, ERROR, - "Write register failed\n"); - return -1; - } - mwifiex_delay_for_sleep_cookie(adapter, - MWIFIEX_MAX_DELAY_COUNT); - while (reg->sleep_cookie && (count++ < 10) && - mwifiex_pcie_ok_to_access_hw(adapter)) - usleep_range(50, 60); - } else { - mwifiex_dbg(adapter, ERROR, - "There is no command but got cmdrsp\n"); - } - memcpy(adapter->upld_buf, skb->data, - min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER, skb->len)); - skb_push(skb, INTF_HEADER_LEN); - if (mwifiex_map_pci_memory(adapter, skb, MWIFIEX_UPLD_SIZE, - PCI_DMA_FROMDEVICE)) - return -1; - } else if (mwifiex_pcie_ok_to_access_hw(adapter)) { - adapter->curr_cmd->resp_skb = skb; - adapter->cmd_resp_received = true; - /* Take the pointer and set it to CMD node and will - return in the response complete callback */ - card->cmdrsp_buf = NULL; - - /* Clear the cmd-rsp buffer address in scratch registers. This - will prevent firmware from writing to the same response - buffer again. */ - if (mwifiex_write_reg(adapter, reg->cmdrsp_addr_lo, 0)) { - mwifiex_dbg(adapter, ERROR, - "cmd_done: failed to clear cmd_rsp_addr_lo\n"); - return -1; - } - /* Write the upper 32bits of the cmdrsp buffer physical - address */ - if (mwifiex_write_reg(adapter, reg->cmdrsp_addr_hi, 0)) { - mwifiex_dbg(adapter, ERROR, - "cmd_done: failed to clear cmd_rsp_addr_hi\n"); - return -1; - } - } - - return 0; -} - -/* - * Command Response processing complete handler - */ -static int mwifiex_pcie_cmdrsp_complete(struct mwifiex_adapter *adapter, - struct sk_buff *skb) -{ - struct pcie_service_card *card = adapter->card; - - if (skb) { - card->cmdrsp_buf = skb; - skb_push(card->cmdrsp_buf, INTF_HEADER_LEN); - if (mwifiex_map_pci_memory(adapter, skb, MWIFIEX_UPLD_SIZE, - PCI_DMA_FROMDEVICE)) - return -1; - } - - return 0; -} - -/* - * This function handles firmware event ready interrupt - */ -static int mwifiex_pcie_process_event_ready(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - u32 rdptr = card->evtbd_rdptr & MWIFIEX_EVTBD_MASK; - u32 wrptr, event; - struct mwifiex_evt_buf_desc *desc; - - if (!mwifiex_pcie_ok_to_access_hw(adapter)) - mwifiex_pm_wakeup_card(adapter); - - if (adapter->event_received) { - mwifiex_dbg(adapter, EVENT, - "info: Event being processed,\t" - "do not process this interrupt just yet\n"); - return 0; - } - - if (rdptr >= MWIFIEX_MAX_EVT_BD) { - mwifiex_dbg(adapter, ERROR, - "info: Invalid read pointer...\n"); - return -1; - } - - /* Read the event ring write pointer set by firmware */ - if (mwifiex_read_reg(adapter, reg->evt_wrptr, &wrptr)) { - mwifiex_dbg(adapter, ERROR, - "EventReady: failed to read reg->evt_wrptr\n"); - return -1; - } - - mwifiex_dbg(adapter, EVENT, - "info: EventReady: Initial <Rd: 0x%x, Wr: 0x%x>", - card->evtbd_rdptr, wrptr); - if (((wrptr & MWIFIEX_EVTBD_MASK) != (card->evtbd_rdptr - & MWIFIEX_EVTBD_MASK)) || - ((wrptr & reg->evt_rollover_ind) == - (card->evtbd_rdptr & reg->evt_rollover_ind))) { - struct sk_buff *skb_cmd; - __le16 data_len = 0; - u16 evt_len; - - mwifiex_dbg(adapter, INFO, - "info: Read Index: %d\n", rdptr); - skb_cmd = card->evt_buf_list[rdptr]; - mwifiex_unmap_pci_memory(adapter, skb_cmd, PCI_DMA_FROMDEVICE); - - /* Take the pointer and set it to event pointer in adapter - and will return back after event handling callback */ - card->evt_buf_list[rdptr] = NULL; - desc = card->evtbd_ring[rdptr]; - memset(desc, 0, sizeof(*desc)); - - event = *(u32 *) &skb_cmd->data[INTF_HEADER_LEN]; - adapter->event_cause = event; - /* The first 4bytes will be the event transfer header - len is 2 bytes followed by type which is 2 bytes */ - memcpy(&data_len, skb_cmd->data, sizeof(__le16)); - evt_len = le16_to_cpu(data_len); - skb_trim(skb_cmd, evt_len); - skb_pull(skb_cmd, INTF_HEADER_LEN); - mwifiex_dbg(adapter, EVENT, - "info: Event length: %d\n", evt_len); - - if ((evt_len > 0) && (evt_len < MAX_EVENT_SIZE)) - memcpy(adapter->event_body, skb_cmd->data + - MWIFIEX_EVENT_HEADER_LEN, evt_len - - MWIFIEX_EVENT_HEADER_LEN); - - adapter->event_received = true; - adapter->event_skb = skb_cmd; - - /* Do not update the event read pointer here, wait till the - buffer is released. This is just to make things simpler, - we need to find a better method of managing these buffers. - */ - } else { - if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT, - CPU_INTR_EVENT_DONE)) { - mwifiex_dbg(adapter, ERROR, - "Write register failed\n"); - return -1; - } - } - - return 0; -} - -/* - * Event processing complete handler - */ -static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter, - struct sk_buff *skb) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - int ret = 0; - u32 rdptr = card->evtbd_rdptr & MWIFIEX_EVTBD_MASK; - u32 wrptr; - struct mwifiex_evt_buf_desc *desc; - - if (!skb) - return 0; - - if (rdptr >= MWIFIEX_MAX_EVT_BD) { - mwifiex_dbg(adapter, ERROR, - "event_complete: Invalid rdptr 0x%x\n", - rdptr); - return -EINVAL; - } - - /* Read the event ring write pointer set by firmware */ - if (mwifiex_read_reg(adapter, reg->evt_wrptr, &wrptr)) { - mwifiex_dbg(adapter, ERROR, - "event_complete: failed to read reg->evt_wrptr\n"); - return -1; - } - - if (!card->evt_buf_list[rdptr]) { - skb_push(skb, INTF_HEADER_LEN); - skb_put(skb, MAX_EVENT_SIZE - skb->len); - if (mwifiex_map_pci_memory(adapter, skb, - MAX_EVENT_SIZE, - PCI_DMA_FROMDEVICE)) - return -1; - card->evt_buf_list[rdptr] = skb; - desc = card->evtbd_ring[rdptr]; - desc->paddr = MWIFIEX_SKB_DMA_ADDR(skb); - desc->len = (u16)skb->len; - desc->flags = 0; - skb = NULL; - } else { - mwifiex_dbg(adapter, ERROR, - "info: ERROR: buf still valid at index %d, <%p, %p>\n", - rdptr, card->evt_buf_list[rdptr], skb); - } - - if ((++card->evtbd_rdptr & MWIFIEX_EVTBD_MASK) == MWIFIEX_MAX_EVT_BD) { - card->evtbd_rdptr = ((card->evtbd_rdptr & - reg->evt_rollover_ind) ^ - reg->evt_rollover_ind); - } - - mwifiex_dbg(adapter, EVENT, - "info: Updated <Rd: 0x%x, Wr: 0x%x>", - card->evtbd_rdptr, wrptr); - - /* Write the event ring read pointer in to reg->evt_rdptr */ - if (mwifiex_write_reg(adapter, reg->evt_rdptr, - card->evtbd_rdptr)) { - mwifiex_dbg(adapter, ERROR, - "event_complete: failed to read reg->evt_rdptr\n"); - return -1; - } - - mwifiex_dbg(adapter, EVENT, - "info: Check Events Again\n"); - ret = mwifiex_pcie_process_event_ready(adapter); - - return ret; -} - -/* - * This function downloads the firmware to the card. - * - * Firmware is downloaded to the card in blocks. Every block download - * is tested for CRC errors, and retried a number of times before - * returning failure. - */ -static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, - struct mwifiex_fw_image *fw) -{ - int ret; - u8 *firmware = fw->fw_buf; - u32 firmware_len = fw->fw_len; - u32 offset = 0; - struct sk_buff *skb; - u32 txlen, tx_blocks = 0, tries, len; - u32 block_retry_cnt = 0; - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - if (!firmware || !firmware_len) { - mwifiex_dbg(adapter, ERROR, - "No firmware image found! Terminating download\n"); - return -1; - } - - mwifiex_dbg(adapter, INFO, - "info: Downloading FW image (%d bytes)\n", - firmware_len); - - if (mwifiex_pcie_disable_host_int(adapter)) { - mwifiex_dbg(adapter, ERROR, - "%s: Disabling interrupts failed.\n", __func__); - return -1; - } - - skb = dev_alloc_skb(MWIFIEX_UPLD_SIZE); - if (!skb) { - ret = -ENOMEM; - goto done; - } - - /* Perform firmware data transfer */ - do { - u32 ireg_intr = 0; - - /* More data? */ - if (offset >= firmware_len) - break; - - for (tries = 0; tries < MAX_POLL_TRIES; tries++) { - ret = mwifiex_read_reg(adapter, reg->cmd_size, - &len); - if (ret) { - mwifiex_dbg(adapter, FATAL, - "Failed reading len from boot code\n"); - goto done; - } - if (len) - break; - usleep_range(10, 20); - } - - if (!len) { - break; - } else if (len > MWIFIEX_UPLD_SIZE) { - mwifiex_dbg(adapter, ERROR, - "FW download failure @ %d, invalid length %d\n", - offset, len); - ret = -1; - goto done; - } - - txlen = len; - - if (len & BIT(0)) { - block_retry_cnt++; - if (block_retry_cnt > MAX_WRITE_IOMEM_RETRY) { - mwifiex_dbg(adapter, ERROR, - "FW download failure @ %d, over max\t" - "retry count\n", offset); - ret = -1; - goto done; - } - mwifiex_dbg(adapter, ERROR, - "FW CRC error indicated by the\t" - "helper: len = 0x%04X, txlen = %d\n", - len, txlen); - len &= ~BIT(0); - /* Setting this to 0 to resend from same offset */ - txlen = 0; - } else { - block_retry_cnt = 0; - /* Set blocksize to transfer - checking for - last block */ - if (firmware_len - offset < txlen) - txlen = firmware_len - offset; - - mwifiex_dbg(adapter, INFO, "."); - - tx_blocks = (txlen + card->pcie.blksz_fw_dl - 1) / - card->pcie.blksz_fw_dl; - - /* Copy payload to buffer */ - memmove(skb->data, &firmware[offset], txlen); - } - - skb_put(skb, MWIFIEX_UPLD_SIZE - skb->len); - skb_trim(skb, tx_blocks * card->pcie.blksz_fw_dl); - - /* Send the boot command to device */ - if (mwifiex_pcie_send_boot_cmd(adapter, skb)) { - mwifiex_dbg(adapter, ERROR, - "Failed to send firmware download command\n"); - ret = -1; - goto done; - } - - /* Wait for the command done interrupt */ - do { - if (mwifiex_read_reg(adapter, PCIE_CPU_INT_STATUS, - &ireg_intr)) { - mwifiex_dbg(adapter, ERROR, - "%s: Failed to read\t" - "interrupt status during fw dnld.\n", - __func__); - mwifiex_unmap_pci_memory(adapter, skb, - PCI_DMA_TODEVICE); - ret = -1; - goto done; - } - } while ((ireg_intr & CPU_INTR_DOOR_BELL) == - CPU_INTR_DOOR_BELL); - - mwifiex_unmap_pci_memory(adapter, skb, PCI_DMA_TODEVICE); - - offset += txlen; - } while (true); - - mwifiex_dbg(adapter, MSG, - "info: FW download over, size %d bytes\n", offset); - - ret = 0; - -done: - dev_kfree_skb_any(skb); - return ret; -} - -/* - * This function checks the firmware status in card. - * - * The winner interface is also determined by this function. - */ -static int -mwifiex_check_fw_status(struct mwifiex_adapter *adapter, u32 poll_num) -{ - int ret = 0; - u32 firmware_stat, winner_status; - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - u32 tries; - - /* Mask spurios interrupts */ - if (mwifiex_write_reg(adapter, PCIE_HOST_INT_STATUS_MASK, - HOST_INTR_MASK)) { - mwifiex_dbg(adapter, ERROR, - "Write register failed\n"); - return -1; - } - - mwifiex_dbg(adapter, INFO, - "Setting driver ready signature\n"); - if (mwifiex_write_reg(adapter, reg->drv_rdy, - FIRMWARE_READY_PCIE)) { - mwifiex_dbg(adapter, ERROR, - "Failed to write driver ready signature\n"); - return -1; - } - - /* Wait for firmware initialization event */ - for (tries = 0; tries < poll_num; tries++) { - if (mwifiex_read_reg(adapter, reg->fw_status, - &firmware_stat)) - ret = -1; - else - ret = 0; - if (ret) - continue; - if (firmware_stat == FIRMWARE_READY_PCIE) { - ret = 0; - break; - } else { - msleep(100); - ret = -1; - } - } - - if (ret) { - if (mwifiex_read_reg(adapter, reg->fw_status, - &winner_status)) - ret = -1; - else if (!winner_status) { - mwifiex_dbg(adapter, INFO, - "PCI-E is the winner\n"); - adapter->winner = 1; - } else { - mwifiex_dbg(adapter, ERROR, - "PCI-E is not the winner <%#x,%d>, exit dnld\n", - ret, adapter->winner); - } - } - - return ret; -} - -/* - * This function reads the interrupt status from card. - */ -static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) -{ - u32 pcie_ireg; - unsigned long flags; - - if (!mwifiex_pcie_ok_to_access_hw(adapter)) - return; - - if (mwifiex_read_reg(adapter, PCIE_HOST_INT_STATUS, &pcie_ireg)) { - mwifiex_dbg(adapter, ERROR, "Read register failed\n"); - return; - } - - if ((pcie_ireg != 0xFFFFFFFF) && (pcie_ireg)) { - - mwifiex_pcie_disable_host_int(adapter); - - /* Clear the pending interrupts */ - if (mwifiex_write_reg(adapter, PCIE_HOST_INT_STATUS, - ~pcie_ireg)) { - mwifiex_dbg(adapter, ERROR, - "Write register failed\n"); - return; - } - spin_lock_irqsave(&adapter->int_lock, flags); - adapter->int_status |= pcie_ireg; - spin_unlock_irqrestore(&adapter->int_lock, flags); - - if (!adapter->pps_uapsd_mode && - adapter->ps_state == PS_STATE_SLEEP && - mwifiex_pcie_ok_to_access_hw(adapter)) { - /* Potentially for PCIe we could get other - * interrupts like shared. Don't change power - * state until cookie is set */ - adapter->ps_state = PS_STATE_AWAKE; - adapter->pm_wakeup_fw_try = false; - del_timer(&adapter->wakeup_timer); - } - } -} - -/* - * Interrupt handler for PCIe root port - * - * This function reads the interrupt status from firmware and assigns - * the main process in workqueue which will handle the interrupt. - */ -static irqreturn_t mwifiex_pcie_interrupt(int irq, void *context) -{ - struct pci_dev *pdev = (struct pci_dev *)context; - struct pcie_service_card *card; - struct mwifiex_adapter *adapter; - - if (!pdev) { - pr_debug("info: %s: pdev is NULL\n", (u8 *)pdev); - goto exit; - } - - card = pci_get_drvdata(pdev); - if (!card || !card->adapter) { - pr_debug("info: %s: card=%p adapter=%p\n", __func__, card, - card ? card->adapter : NULL); - goto exit; - } - adapter = card->adapter; - - if (adapter->surprise_removed) - goto exit; - - mwifiex_interrupt_status(adapter); - mwifiex_queue_main_work(adapter); - -exit: - return IRQ_HANDLED; -} - -/* - * This function checks the current interrupt status. - * - * The following interrupts are checked and handled by this function - - * - Data sent - * - Command sent - * - Command received - * - Packets received - * - Events received - * - * In case of Rx packets received, the packets are uploaded from card to - * host and processed accordingly. - */ -static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) -{ - int ret; - u32 pcie_ireg; - unsigned long flags; - - spin_lock_irqsave(&adapter->int_lock, flags); - /* Clear out unused interrupts */ - pcie_ireg = adapter->int_status; - adapter->int_status = 0; - spin_unlock_irqrestore(&adapter->int_lock, flags); - - while (pcie_ireg & HOST_INTR_MASK) { - if (pcie_ireg & HOST_INTR_DNLD_DONE) { - pcie_ireg &= ~HOST_INTR_DNLD_DONE; - mwifiex_dbg(adapter, INTR, - "info: TX DNLD Done\n"); - ret = mwifiex_pcie_send_data_complete(adapter); - if (ret) - return ret; - } - if (pcie_ireg & HOST_INTR_UPLD_RDY) { - pcie_ireg &= ~HOST_INTR_UPLD_RDY; - mwifiex_dbg(adapter, INTR, - "info: Rx DATA\n"); - ret = mwifiex_pcie_process_recv_data(adapter); - if (ret) - return ret; - } - if (pcie_ireg & HOST_INTR_EVENT_RDY) { - pcie_ireg &= ~HOST_INTR_EVENT_RDY; - mwifiex_dbg(adapter, INTR, - "info: Rx EVENT\n"); - ret = mwifiex_pcie_process_event_ready(adapter); - if (ret) - return ret; - } - - if (pcie_ireg & HOST_INTR_CMD_DONE) { - pcie_ireg &= ~HOST_INTR_CMD_DONE; - if (adapter->cmd_sent) { - mwifiex_dbg(adapter, INTR, - "info: CMD sent Interrupt\n"); - adapter->cmd_sent = false; - } - /* Handle command response */ - ret = mwifiex_pcie_process_cmd_complete(adapter); - if (ret) - return ret; - } - - if (mwifiex_pcie_ok_to_access_hw(adapter)) { - if (mwifiex_read_reg(adapter, PCIE_HOST_INT_STATUS, - &pcie_ireg)) { - mwifiex_dbg(adapter, ERROR, - "Read register failed\n"); - return -1; - } - - if ((pcie_ireg != 0xFFFFFFFF) && (pcie_ireg)) { - if (mwifiex_write_reg(adapter, - PCIE_HOST_INT_STATUS, - ~pcie_ireg)) { - mwifiex_dbg(adapter, ERROR, - "Write register failed\n"); - return -1; - } - } - - } - } - mwifiex_dbg(adapter, INTR, - "info: cmd_sent=%d data_sent=%d\n", - adapter->cmd_sent, adapter->data_sent); - if (adapter->ps_state != PS_STATE_SLEEP) - mwifiex_pcie_enable_host_int(adapter); - - return 0; -} - -/* - * This function downloads data from driver to card. - * - * Both commands and data packets are transferred to the card by this - * function. - * - * This function adds the PCIE specific header to the front of the buffer - * before transferring. The header contains the length of the packet and - * the type. The firmware handles the packets based upon this set type. - */ -static int mwifiex_pcie_host_to_card(struct mwifiex_adapter *adapter, u8 type, - struct sk_buff *skb, - struct mwifiex_tx_param *tx_param) -{ - if (!skb) { - mwifiex_dbg(adapter, ERROR, - "Passed NULL skb to %s\n", __func__); - return -1; - } - - if (type == MWIFIEX_TYPE_DATA) - return mwifiex_pcie_send_data(adapter, skb, tx_param); - else if (type == MWIFIEX_TYPE_CMD) - return mwifiex_pcie_send_cmd(adapter, skb); - - return 0; -} - -/* This function read/write firmware */ -static enum rdwr_status -mwifiex_pcie_rdwr_firmware(struct mwifiex_adapter *adapter, u8 doneflag) -{ - int ret, tries; - u8 ctrl_data; - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - ret = mwifiex_write_reg(adapter, reg->fw_dump_ctrl, FW_DUMP_HOST_READY); - if (ret) { - mwifiex_dbg(adapter, ERROR, - "PCIE write err\n"); - return RDWR_STATUS_FAILURE; - } - - for (tries = 0; tries < MAX_POLL_TRIES; tries++) { - mwifiex_read_reg_byte(adapter, reg->fw_dump_ctrl, &ctrl_data); - if (ctrl_data == FW_DUMP_DONE) - return RDWR_STATUS_SUCCESS; - if (doneflag && ctrl_data == doneflag) - return RDWR_STATUS_DONE; - if (ctrl_data != FW_DUMP_HOST_READY) { - mwifiex_dbg(adapter, WARN, - "The ctrl reg was changed, re-try again!\n"); - ret = mwifiex_write_reg(adapter, reg->fw_dump_ctrl, - FW_DUMP_HOST_READY); - if (ret) { - mwifiex_dbg(adapter, ERROR, - "PCIE write err\n"); - return RDWR_STATUS_FAILURE; - } - } - usleep_range(100, 200); - } - - mwifiex_dbg(adapter, ERROR, "Fail to pull ctrl_data\n"); - return RDWR_STATUS_FAILURE; -} - -/* This function dump firmware memory to file */ -static void mwifiex_pcie_fw_dump(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *creg = card->pcie.reg; - unsigned int reg, reg_start, reg_end; - u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0; - enum rdwr_status stat; - u32 memory_size; - int ret; - - if (!card->pcie.can_dump_fw) - return; - - for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) { - struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; - - if (entry->mem_ptr) { - vfree(entry->mem_ptr); - entry->mem_ptr = NULL; - } - entry->mem_size = 0; - } - - mwifiex_dbg(adapter, DUMP, "== mwifiex firmware dump start ==\n"); - - /* Read the number of the memories which will dump */ - stat = mwifiex_pcie_rdwr_firmware(adapter, doneflag); - if (stat == RDWR_STATUS_FAILURE) - return; - - reg = creg->fw_dump_start; - mwifiex_read_reg_byte(adapter, reg, &dump_num); - - /* Read the length of every memory which will dump */ - for (idx = 0; idx < dump_num; idx++) { - struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; - - stat = mwifiex_pcie_rdwr_firmware(adapter, doneflag); - if (stat == RDWR_STATUS_FAILURE) - return; - - memory_size = 0; - reg = creg->fw_dump_start; - for (i = 0; i < 4; i++) { - mwifiex_read_reg_byte(adapter, reg, &read_reg); - memory_size |= (read_reg << (i * 8)); - reg++; - } - - if (memory_size == 0) { - mwifiex_dbg(adapter, MSG, "Firmware dump Finished!\n"); - ret = mwifiex_write_reg(adapter, creg->fw_dump_ctrl, - FW_DUMP_READ_DONE); - if (ret) { - mwifiex_dbg(adapter, ERROR, "PCIE write err\n"); - return; - } - break; - } - - mwifiex_dbg(adapter, DUMP, - "%s_SIZE=0x%x\n", entry->mem_name, memory_size); - entry->mem_ptr = vmalloc(memory_size + 1); - entry->mem_size = memory_size; - if (!entry->mem_ptr) { - mwifiex_dbg(adapter, ERROR, - "Vmalloc %s failed\n", entry->mem_name); - return; - } - dbg_ptr = entry->mem_ptr; - end_ptr = dbg_ptr + memory_size; - - doneflag = entry->done_flag; - mwifiex_dbg(adapter, DUMP, "Start %s output, please wait...\n", - entry->mem_name); - - do { - stat = mwifiex_pcie_rdwr_firmware(adapter, doneflag); - if (RDWR_STATUS_FAILURE == stat) - return; - - reg_start = creg->fw_dump_start; - reg_end = creg->fw_dump_end; - for (reg = reg_start; reg <= reg_end; reg++) { - mwifiex_read_reg_byte(adapter, reg, dbg_ptr); - if (dbg_ptr < end_ptr) { - dbg_ptr++; - } else { - mwifiex_dbg(adapter, ERROR, - "Allocated buf not enough\n"); - return; - } - } - - if (stat != RDWR_STATUS_DONE) - continue; - - mwifiex_dbg(adapter, DUMP, - "%s done: size=0x%tx\n", - entry->mem_name, dbg_ptr - entry->mem_ptr); - break; - } while (true); - } - mwifiex_dbg(adapter, DUMP, "== mwifiex firmware dump end ==\n"); -} - -static void mwifiex_pcie_device_dump_work(struct mwifiex_adapter *adapter) -{ - mwifiex_drv_info_dump(adapter); - mwifiex_pcie_fw_dump(adapter); - mwifiex_upload_device_dump(adapter); -} - -static unsigned long iface_work_flags; -static struct mwifiex_adapter *save_adapter; -static void mwifiex_pcie_work(struct work_struct *work) -{ - if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, - &iface_work_flags)) - mwifiex_pcie_device_dump_work(save_adapter); -} - -static DECLARE_WORK(pcie_work, mwifiex_pcie_work); -/* This function dumps FW information */ -static void mwifiex_pcie_device_dump(struct mwifiex_adapter *adapter) -{ - save_adapter = adapter; - if (test_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags)) - return; - - set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags); - - schedule_work(&pcie_work); -} - -/* - * This function initializes the PCI-E host memory space, WCB rings, etc. - * - * The following initializations steps are followed - - * - Allocate TXBD ring buffers - * - Allocate RXBD ring buffers - * - Allocate event BD ring buffers - * - Allocate command response ring buffer - * - Allocate sleep cookie buffer - */ -static int mwifiex_pcie_init(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - int ret; - struct pci_dev *pdev = card->dev; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - pci_set_drvdata(pdev, card); - - ret = pci_enable_device(pdev); - if (ret) - goto err_enable_dev; - - pci_set_master(pdev); - - mwifiex_dbg(adapter, INFO, - "try set_consistent_dma_mask(32)\n"); - ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (ret) { - mwifiex_dbg(adapter, ERROR, - "set_dma_mask(32) failed\n"); - goto err_set_dma_mask; - } - - ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); - if (ret) { - mwifiex_dbg(adapter, ERROR, - "set_consistent_dma_mask(64) failed\n"); - goto err_set_dma_mask; - } - - ret = pci_request_region(pdev, 0, DRV_NAME); - if (ret) { - mwifiex_dbg(adapter, ERROR, - "req_reg(0) error\n"); - goto err_req_region0; - } - card->pci_mmap = pci_iomap(pdev, 0, 0); - if (!card->pci_mmap) { - mwifiex_dbg(adapter, ERROR, "iomap(0) error\n"); - ret = -EIO; - goto err_iomap0; - } - ret = pci_request_region(pdev, 2, DRV_NAME); - if (ret) { - mwifiex_dbg(adapter, ERROR, "req_reg(2) error\n"); - goto err_req_region2; - } - card->pci_mmap1 = pci_iomap(pdev, 2, 0); - if (!card->pci_mmap1) { - mwifiex_dbg(adapter, ERROR, - "iomap(2) error\n"); - ret = -EIO; - goto err_iomap2; - } - - mwifiex_dbg(adapter, INFO, - "PCI memory map Virt0: %p PCI memory map Virt2: %p\n", - card->pci_mmap, card->pci_mmap1); - - card->cmdrsp_buf = NULL; - ret = mwifiex_pcie_create_txbd_ring(adapter); - if (ret) - goto err_cre_txbd; - ret = mwifiex_pcie_create_rxbd_ring(adapter); - if (ret) - goto err_cre_rxbd; - ret = mwifiex_pcie_create_evtbd_ring(adapter); - if (ret) - goto err_cre_evtbd; - ret = mwifiex_pcie_alloc_cmdrsp_buf(adapter); - if (ret) - goto err_alloc_cmdbuf; - if (reg->sleep_cookie) { - ret = mwifiex_pcie_alloc_sleep_cookie_buf(adapter); - if (ret) - goto err_alloc_cookie; - } else { - card->sleep_cookie_vbase = NULL; - } - return ret; - -err_alloc_cookie: - mwifiex_pcie_delete_cmdrsp_buf(adapter); -err_alloc_cmdbuf: - mwifiex_pcie_delete_evtbd_ring(adapter); -err_cre_evtbd: - mwifiex_pcie_delete_rxbd_ring(adapter); -err_cre_rxbd: - mwifiex_pcie_delete_txbd_ring(adapter); -err_cre_txbd: - pci_iounmap(pdev, card->pci_mmap1); -err_iomap2: - pci_release_region(pdev, 2); -err_req_region2: - pci_iounmap(pdev, card->pci_mmap); -err_iomap0: - pci_release_region(pdev, 0); -err_req_region0: -err_set_dma_mask: - pci_disable_device(pdev); -err_enable_dev: - pci_set_drvdata(pdev, NULL); - return ret; -} - -/* - * This function cleans up the allocated card buffers. - * - * The following are freed by this function - - * - TXBD ring buffers - * - RXBD ring buffers - * - Event BD ring buffers - * - Command response ring buffer - * - Sleep cookie buffer - */ -static void mwifiex_pcie_cleanup(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - struct pci_dev *pdev = card->dev; - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - - if (user_rmmod) { - mwifiex_dbg(adapter, INFO, - "Clearing driver ready signature\n"); - if (mwifiex_write_reg(adapter, reg->drv_rdy, 0x00000000)) - mwifiex_dbg(adapter, ERROR, - "Failed to write driver not-ready signature\n"); - } - - if (pdev) { - pci_iounmap(pdev, card->pci_mmap); - pci_iounmap(pdev, card->pci_mmap1); - pci_disable_device(pdev); - pci_release_region(pdev, 2); - pci_release_region(pdev, 0); - pci_set_drvdata(pdev, NULL); - } - kfree(card); -} - -/* - * This function registers the PCIE device. - * - * PCIE IRQ is claimed, block size is set and driver data is initialized. - */ -static int mwifiex_register_dev(struct mwifiex_adapter *adapter) -{ - int ret; - struct pcie_service_card *card = adapter->card; - struct pci_dev *pdev = card->dev; - - /* save adapter pointer in card */ - card->adapter = adapter; - - ret = request_irq(pdev->irq, mwifiex_pcie_interrupt, IRQF_SHARED, - "MRVL_PCIE", pdev); - if (ret) { - mwifiex_dbg(adapter, ERROR, - "request_irq failed: ret=%d\n", ret); - adapter->card = NULL; - return -1; - } - - adapter->dev = &pdev->dev; - adapter->tx_buf_size = card->pcie.tx_buf_size; - adapter->mem_type_mapping_tbl = mem_type_mapping_tbl; - adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl); - strcpy(adapter->fw_name, card->pcie.firmware); - adapter->ext_scan = card->pcie.can_ext_scan; - - return 0; -} - -/* - * This function unregisters the PCIE device. - * - * The PCIE IRQ is released, the function is disabled and driver - * data is set to null. - */ -static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter) -{ - struct pcie_service_card *card = adapter->card; - const struct mwifiex_pcie_card_reg *reg; - - if (card) { - mwifiex_dbg(adapter, INFO, - "%s(): calling free_irq()\n", __func__); - free_irq(card->dev->irq, card->dev); - - reg = card->pcie.reg; - if (reg->sleep_cookie) - mwifiex_pcie_delete_sleep_cookie_buf(adapter); - - mwifiex_pcie_delete_cmdrsp_buf(adapter); - mwifiex_pcie_delete_evtbd_ring(adapter); - mwifiex_pcie_delete_rxbd_ring(adapter); - mwifiex_pcie_delete_txbd_ring(adapter); - card->cmdrsp_buf = NULL; - } -} - -static struct mwifiex_if_ops pcie_ops = { - .init_if = mwifiex_pcie_init, - .cleanup_if = mwifiex_pcie_cleanup, - .check_fw_status = mwifiex_check_fw_status, - .prog_fw = mwifiex_prog_fw_w_helper, - .register_dev = mwifiex_register_dev, - .unregister_dev = mwifiex_unregister_dev, - .enable_int = mwifiex_pcie_enable_host_int, - .process_int_status = mwifiex_process_int_status, - .host_to_card = mwifiex_pcie_host_to_card, - .wakeup = mwifiex_pm_wakeup_card, - .wakeup_complete = mwifiex_pm_wakeup_card_complete, - - /* PCIE specific */ - .cmdrsp_complete = mwifiex_pcie_cmdrsp_complete, - .event_complete = mwifiex_pcie_event_complete, - .update_mp_end_port = NULL, - .cleanup_mpa_buf = NULL, - .init_fw_port = mwifiex_pcie_init_fw_port, - .clean_pcie_ring = mwifiex_clean_pcie_ring_buf, - .device_dump = mwifiex_pcie_device_dump, -}; - -/* - * This function initializes the PCIE driver module. - * - * This initiates the semaphore and registers the device with - * PCIE bus. - */ -static int mwifiex_pcie_init_module(void) -{ - int ret; - - pr_debug("Marvell PCIe Driver\n"); - - sema_init(&add_remove_card_sem, 1); - - /* Clear the flag in case user removes the card. */ - user_rmmod = 0; - - ret = pci_register_driver(&mwifiex_pcie); - if (ret) - pr_err("Driver register failed!\n"); - else - pr_debug("info: Driver registered successfully!\n"); - - return ret; -} - -/* - * This function cleans up the PCIE driver. - * - * The following major steps are followed for cleanup - - * - Resume the device if its suspended - * - Disconnect the device if connected - * - Shutdown the firmware - * - Unregister the device from PCIE bus. - */ -static void mwifiex_pcie_cleanup_module(void) -{ - if (!down_interruptible(&add_remove_card_sem)) - up(&add_remove_card_sem); - - /* Set the flag as user is removing this module. */ - user_rmmod = 1; - - cancel_work_sync(&pcie_work); - pci_unregister_driver(&mwifiex_pcie); -} - -module_init(mwifiex_pcie_init_module); -module_exit(mwifiex_pcie_cleanup_module); - -MODULE_AUTHOR("Marvell International Ltd."); -MODULE_DESCRIPTION("Marvell WiFi-Ex PCI-Express Driver version " PCIE_VERSION); -MODULE_VERSION(PCIE_VERSION); -MODULE_LICENSE("GPL v2"); -/*(DEBLOBBED)*/ |