diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/sdio.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/sdio.c | 2436 |
1 files changed, 2436 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwifiex/sdio.c b/drivers/net/wireless/mwifiex/sdio.c new file mode 100644 index 000000000..58a42ce58 --- /dev/null +++ b/drivers/net/wireless/mwifiex/sdio.c @@ -0,0 +1,2436 @@ +/* + * Marvell Wireless LAN device driver: SDIO 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 "sdio.h" + + +#define SDIO_VERSION "1.0" + +/* The mwifiex_sdio_remove() callback function is called when + * user removes this module from kernel space or ejects + * the card from the slot. The driver handles these 2 cases + * differently. + * If the user is removing the module, the few commands (FUNC_SHUTDOWN, + * HS_CANCEL etc.) are sent to the firmware. + * If the card is removed, there is no need to send these command. + * + * The variable 'user_rmmod' is used to distinguish these two + * scenarios. This flag is initialized as FALSE in case the card + * is removed, and will be set to TRUE for module removal when + * module_exit function is called. + */ +static u8 user_rmmod; + +static struct mwifiex_if_ops sdio_ops; +static unsigned long iface_work_flags; + +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}, + {"APU", NULL, 0, 0xF3}, + {"CIU", NULL, 0, 0xF4}, + {"ICU", NULL, 0, 0xF5}, + {"MAC", NULL, 0, 0xF6}, + {"EXT7", NULL, 0, 0xF7}, + {"EXT8", NULL, 0, 0xF8}, + {"EXT9", NULL, 0, 0xF9}, + {"EXT10", NULL, 0, 0xFA}, + {"EXT11", NULL, 0, 0xFB}, + {"EXT12", NULL, 0, 0xFC}, + {"EXT13", NULL, 0, 0xFD}, + {"EXTLAST", NULL, 0, 0xFE}, +}; + +/* + * SDIO probe. + * + * This function probes an mwifiex device and registers it. It allocates + * the card structure, enables SDIO function number and initiates the + * device registration and initialization procedure by adding a logical + * interface. + */ +static int +mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) +{ + int ret; + struct sdio_mmc_card *card = NULL; + + pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n", + func->vendor, func->device, func->class, func->num); + + card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL); + if (!card) + return -ENOMEM; + + card->func = func; + + func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; + + if (id->driver_data) { + struct mwifiex_sdio_device *data = (void *)id->driver_data; + + card->firmware = data->firmware; + card->reg = data->reg; + card->max_ports = data->max_ports; + card->mp_agg_pkt_limit = data->mp_agg_pkt_limit; + card->supports_sdio_new_mode = data->supports_sdio_new_mode; + card->has_control_mask = data->has_control_mask; + card->tx_buf_size = data->tx_buf_size; + card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size; + card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size; + card->can_dump_fw = data->can_dump_fw; + card->can_auto_tdls = data->can_auto_tdls; + card->can_ext_scan = data->can_ext_scan; + } + + sdio_claim_host(func); + ret = sdio_enable_func(func); + sdio_release_host(func); + + if (ret) { + pr_err("%s: failed to enable function\n", __func__); + kfree(card); + return -EIO; + } + + if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops, + MWIFIEX_SDIO)) { + pr_err("%s: add card failed\n", __func__); + kfree(card); + sdio_claim_host(func); + ret = sdio_disable_func(func); + sdio_release_host(func); + ret = -1; + } + + return ret; +} + +/* + * SDIO resume. + * + * 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_sdio_resume(struct device *dev) +{ + struct sdio_func *func = dev_to_sdio_func(dev); + struct sdio_mmc_card *card; + struct mwifiex_adapter *adapter; + mmc_pm_flag_t pm_flag = 0; + + if (func) { + pm_flag = sdio_get_host_pm_caps(func); + card = sdio_get_drvdata(func); + if (!card || !card->adapter) { + pr_err("resume: invalid card or adapter\n"); + return 0; + } + } else { + pr_err("resume: sdio_func is not specified\n"); + return 0; + } + + adapter = card->adapter; + + if (!adapter->is_suspended) { + dev_warn(adapter->dev, "device already resumed\n"); + return 0; + } + + adapter->is_suspended = false; + + /* Disable Host Sleep */ + mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), + MWIFIEX_ASYNC_CMD); + + return 0; +} + +/* + * SDIO remove. + * + * This function removes the interface and frees up the card structure. + */ +static void +mwifiex_sdio_remove(struct sdio_func *func) +{ + struct sdio_mmc_card *card; + struct mwifiex_adapter *adapter; + struct mwifiex_private *priv; + + pr_debug("info: SDIO func num=%d\n", func->num); + + card = sdio_get_drvdata(func); + if (!card) + return; + + adapter = card->adapter; + if (!adapter || !adapter->priv_num) + return; + + if (user_rmmod) { + if (adapter->is_suspended) + mwifiex_sdio_resume(adapter->dev); + + 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); +} + +/* + * SDIO suspend. + * + * 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_sdio_suspend(struct device *dev) +{ + struct sdio_func *func = dev_to_sdio_func(dev); + struct sdio_mmc_card *card; + struct mwifiex_adapter *adapter; + mmc_pm_flag_t pm_flag = 0; + int ret = 0; + + if (func) { + pm_flag = sdio_get_host_pm_caps(func); + pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", + sdio_func_id(func), pm_flag); + if (!(pm_flag & MMC_PM_KEEP_POWER)) { + pr_err("%s: cannot remain alive while host is" + " suspended\n", sdio_func_id(func)); + return -ENOSYS; + } + + card = sdio_get_drvdata(func); + if (!card || !card->adapter) { + pr_err("suspend: invalid card or adapter\n"); + return 0; + } + } else { + pr_err("suspend: sdio_func is not specified\n"); + return 0; + } + + adapter = card->adapter; + + /* Enable the Host Sleep */ + if (!mwifiex_enable_hs(adapter)) { + dev_err(adapter->dev, "cmd: failed to suspend\n"); + adapter->hs_enabling = false; + return -EFAULT; + } + + dev_dbg(adapter->dev, "cmd: suspend with MMC_PM_KEEP_POWER\n"); + ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); + + /* Indicate device suspended */ + adapter->is_suspended = true; + adapter->hs_enabling = false; + + return ret; +} + +/* Device ID for SD8786 */ +#define SDIO_DEVICE_ID_MARVELL_8786 (0x9116) +/* Device ID for SD8787 */ +#define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) +/* Device ID for SD8797 */ +#define SDIO_DEVICE_ID_MARVELL_8797 (0x9129) +/* Device ID for SD8897 */ +#define SDIO_DEVICE_ID_MARVELL_8897 (0x912d) +/* Device ID for SD8887 */ +#define SDIO_DEVICE_ID_MARVELL_8887 (0x9135) +/* Device ID for SD8801 */ +#define SDIO_DEVICE_ID_MARVELL_8801 (0x9139) + + +/* WLAN IDs */ +static const struct sdio_device_id mwifiex_ids[] = { + {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786), + .driver_data = (unsigned long) &mwifiex_sdio_sd8786}, + {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787), + .driver_data = (unsigned long) &mwifiex_sdio_sd8787}, + {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797), + .driver_data = (unsigned long) &mwifiex_sdio_sd8797}, + {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897), + .driver_data = (unsigned long) &mwifiex_sdio_sd8897}, + {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887), + .driver_data = (unsigned long)&mwifiex_sdio_sd8887}, + {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801), + .driver_data = (unsigned long)&mwifiex_sdio_sd8801}, + {}, +}; + +MODULE_DEVICE_TABLE(sdio, mwifiex_ids); + +static const struct dev_pm_ops mwifiex_sdio_pm_ops = { + .suspend = mwifiex_sdio_suspend, + .resume = mwifiex_sdio_resume, +}; + +static struct sdio_driver mwifiex_sdio = { + .name = "mwifiex_sdio", + .id_table = mwifiex_ids, + .probe = mwifiex_sdio_probe, + .remove = mwifiex_sdio_remove, + .drv = { + .owner = THIS_MODULE, + .pm = &mwifiex_sdio_pm_ops, + } +}; + +/* Write data into SDIO card register. Caller claims SDIO device. */ +static int +mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data) +{ + int ret = -1; + sdio_writeb(func, data, reg, &ret); + return ret; +} + +/* + * This function writes data into SDIO card register. + */ +static int +mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data) +{ + struct sdio_mmc_card *card = adapter->card; + int ret; + + sdio_claim_host(card->func); + ret = mwifiex_write_reg_locked(card->func, reg, data); + sdio_release_host(card->func); + + return ret; +} + +/* + * This function reads data from SDIO card register. + */ +static int +mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data) +{ + struct sdio_mmc_card *card = adapter->card; + int ret = -1; + u8 val; + + sdio_claim_host(card->func); + val = sdio_readb(card->func, reg, &ret); + sdio_release_host(card->func); + + *data = val; + + return ret; +} + +/* + * This function writes multiple data into SDIO card memory. + * + * This does not work in suspended mode. + */ +static int +mwifiex_write_data_sync(struct mwifiex_adapter *adapter, + u8 *buffer, u32 pkt_len, u32 port) +{ + struct sdio_mmc_card *card = adapter->card; + int ret; + u8 blk_mode = + (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; + u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; + u32 blk_cnt = + (blk_mode == + BLOCK_MODE) ? (pkt_len / + MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; + u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); + + if (adapter->is_suspended) { + dev_err(adapter->dev, + "%s: not allowed while suspended\n", __func__); + return -1; + } + + sdio_claim_host(card->func); + + ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size); + + sdio_release_host(card->func); + + return ret; +} + +/* + * This function reads multiple data from SDIO card memory. + */ +static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer, + u32 len, u32 port, u8 claim) +{ + struct sdio_mmc_card *card = adapter->card; + int ret; + u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE + : BLOCK_MODE; + u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; + u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) + : len; + u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); + + if (claim) + sdio_claim_host(card->func); + + ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size); + + if (claim) + sdio_release_host(card->func); + + return ret; +} + +/* + * This function wakes up the card. + * + * A host power up command is written to the card configuration + * register to wake up the card. + */ +static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) +{ + dev_dbg(adapter->dev, "event: wakeup device...\n"); + + return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); +} + +/* + * 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) +{ + dev_dbg(adapter->dev, "cmd: wakeup device completed\n"); + + return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); +} + +/* + * This function is used to initialize IO ports for the + * chipsets supporting SDIO new mode eg SD8897. + */ +static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter) +{ + u8 reg; + struct sdio_mmc_card *card = adapter->card; + + adapter->ioport = MEM_PORT; + + /* enable sdio new mode */ + if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®)) + return -1; + if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg, + reg | CMD53_NEW_MODE)) + return -1; + + /* Configure cmd port and enable reading rx length from the register */ + if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, ®)) + return -1; + if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0, + reg | CMD_PORT_RD_LEN_EN)) + return -1; + + /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is + * completed + */ + if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, ®)) + return -1; + if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1, + reg | CMD_PORT_AUTO_EN)) + return -1; + + return 0; +} + +/* This function initializes the IO ports. + * + * The following operations are performed - + * - Read the IO ports (0, 1 and 2) + * - Set host interrupt Reset-To-Read to clear + * - Set auto re-enable interrupt + */ +static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) +{ + u8 reg; + struct sdio_mmc_card *card = adapter->card; + + adapter->ioport = 0; + + if (card->supports_sdio_new_mode) { + if (mwifiex_init_sdio_new_mode(adapter)) + return -1; + goto cont; + } + + /* Read the IO port */ + if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, ®)) + adapter->ioport |= (reg & 0xff); + else + return -1; + + if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, ®)) + adapter->ioport |= ((reg & 0xff) << 8); + else + return -1; + + if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, ®)) + adapter->ioport |= ((reg & 0xff) << 16); + else + return -1; +cont: + pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); + + /* Set Host interrupt reset to read to clear */ + if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®)) + mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg, + reg | card->reg->sdio_int_mask); + else + return -1; + + /* Dnld/Upld ready set to auto reset */ + if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®)) + mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg, + reg | AUTO_RE_ENABLE_INT); + else + return -1; + + return 0; +} + +/* + * This function sends data to the card. + */ +static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, + u8 *payload, u32 pkt_len, u32 port) +{ + u32 i = 0; + int ret; + + do { + ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port); + if (ret) { + i++; + dev_err(adapter->dev, "host_to_card, write iomem" + " (%d) failed: %d\n", i, ret); + if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) + dev_err(adapter->dev, "write CFG reg failed\n"); + + ret = -1; + if (i > MAX_WRITE_IOMEM_RETRY) + return ret; + } + } while (ret == -1); + + return ret; +} + +/* + * This function gets the read port. + * + * If control port bit is set in MP read bitmap, the control port + * is returned, otherwise the current read port is returned and + * the value is increased (provided it does not reach the maximum + * limit, in which case it is reset to 1) + */ +static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) +{ + struct sdio_mmc_card *card = adapter->card; + const struct mwifiex_sdio_card_reg *reg = card->reg; + u32 rd_bitmap = card->mp_rd_bitmap; + + dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%08x\n", rd_bitmap); + + if (card->supports_sdio_new_mode) { + if (!(rd_bitmap & reg->data_port_mask)) + return -1; + } else { + if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask))) + return -1; + } + + if ((card->has_control_mask) && + (card->mp_rd_bitmap & CTRL_PORT_MASK)) { + card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK); + *port = CTRL_PORT; + dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%08x\n", + *port, card->mp_rd_bitmap); + return 0; + } + + if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port))) + return -1; + + /* We are now handling the SDIO data ports */ + card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port)); + *port = card->curr_rd_port; + + if (++card->curr_rd_port == card->max_ports) + card->curr_rd_port = reg->start_rd_port; + + dev_dbg(adapter->dev, + "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n", + *port, rd_bitmap, card->mp_rd_bitmap); + + return 0; +} + +/* + * This function gets the write port for data. + * + * The current write port is returned if available and the value is + * increased (provided it does not reach the maximum limit, in which + * case it is reset to 1) + */ +static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port) +{ + struct sdio_mmc_card *card = adapter->card; + const struct mwifiex_sdio_card_reg *reg = card->reg; + u32 wr_bitmap = card->mp_wr_bitmap; + + dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap); + + if (!(wr_bitmap & card->mp_data_port_mask)) { + adapter->data_sent = true; + return -EBUSY; + } + + if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { + card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port)); + *port = card->curr_wr_port; + if (++card->curr_wr_port == card->mp_end_port) + card->curr_wr_port = reg->start_wr_port; + } else { + adapter->data_sent = true; + return -EBUSY; + } + + if ((card->has_control_mask) && (*port == CTRL_PORT)) { + dev_err(adapter->dev, + "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", + *port, card->curr_wr_port, wr_bitmap, + card->mp_wr_bitmap); + return -1; + } + + dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", + *port, wr_bitmap, card->mp_wr_bitmap); + + return 0; +} + +/* + * This function polls the card status. + */ +static int +mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) +{ + struct sdio_mmc_card *card = adapter->card; + u32 tries; + u8 cs; + + for (tries = 0; tries < MAX_POLL_TRIES; tries++) { + if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs)) + break; + else if ((cs & bits) == bits) + return 0; + + usleep_range(10, 20); + } + + dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries); + + return -1; +} + +/* + * This function reads the firmware status. + */ +static int +mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) +{ + struct sdio_mmc_card *card = adapter->card; + const struct mwifiex_sdio_card_reg *reg = card->reg; + u8 fws0, fws1; + + if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0)) + return -1; + + if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1)) + return -1; + + *dat = (u16) ((fws1 << 8) | fws0); + + 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 void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) +{ + struct sdio_mmc_card *card = adapter->card; + struct sdio_func *func = card->func; + + sdio_claim_host(func); + mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0); + sdio_release_irq(func); + sdio_release_host(func); +} + +/* + * This function reads the interrupt status from card. + */ +static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) +{ + struct sdio_mmc_card *card = adapter->card; + u8 sdio_ireg; + unsigned long flags; + + if (mwifiex_read_data_sync(adapter, card->mp_regs, + card->reg->max_mp_regs, + REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) { + dev_err(adapter->dev, "read mp_regs failed\n"); + return; + } + + sdio_ireg = card->mp_regs[card->reg->host_int_status_reg]; + if (sdio_ireg) { + /* + * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS + * For SDIO new mode CMD port interrupts + * DN_LD_CMD_PORT_HOST_INT_STATUS and/or + * UP_LD_CMD_PORT_HOST_INT_STATUS + * Clear the interrupt status register + */ + dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg); + spin_lock_irqsave(&adapter->int_lock, flags); + adapter->int_status |= sdio_ireg; + spin_unlock_irqrestore(&adapter->int_lock, flags); + } +} + +/* + * SDIO interrupt handler. + * + * This function reads the interrupt status from firmware and handles + * the interrupt in current thread (ksdioirqd) right away. + */ +static void +mwifiex_sdio_interrupt(struct sdio_func *func) +{ + struct mwifiex_adapter *adapter; + struct sdio_mmc_card *card; + + card = sdio_get_drvdata(func); + if (!card || !card->adapter) { + pr_debug("int: func=%p card=%p adapter=%p\n", + func, card, card ? card->adapter : NULL); + return; + } + adapter = card->adapter; + + if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) + adapter->ps_state = PS_STATE_AWAKE; + + mwifiex_interrupt_status(adapter); + mwifiex_main_process(adapter); +} + +/* + * This function enables the host interrupt. + * + * The host interrupt enable mask is written to the card + * host interrupt mask register. + */ +static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) +{ + struct sdio_mmc_card *card = adapter->card; + struct sdio_func *func = card->func; + int ret; + + sdio_claim_host(func); + + /* Request the SDIO IRQ */ + ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); + if (ret) { + dev_err(adapter->dev, "claim irq failed: ret=%d\n", ret); + goto out; + } + + /* Simply write the mask to the register */ + ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, + card->reg->host_int_enable); + if (ret) { + dev_err(adapter->dev, "enable host interrupt failed\n"); + sdio_release_irq(func); + } + +out: + sdio_release_host(func); + return ret; +} + +/* + * This function sends a data buffer to the card. + */ +static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, + u32 *type, u8 *buffer, + u32 npayload, u32 ioport) +{ + int ret; + u32 nb; + + if (!buffer) { + dev_err(adapter->dev, "%s: buffer is NULL\n", __func__); + return -1; + } + + ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1); + + if (ret) { + dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__, + ret); + return -1; + } + + nb = le16_to_cpu(*(__le16 *) (buffer)); + if (nb > npayload) { + dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n", + __func__, nb, npayload); + return -1; + } + + *type = le16_to_cpu(*(__le16 *) (buffer + 2)); + + 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) +{ + struct sdio_mmc_card *card = adapter->card; + const struct mwifiex_sdio_card_reg *reg = card->reg; + int ret; + u8 *firmware = fw->fw_buf; + u32 firmware_len = fw->fw_len; + u32 offset = 0; + u8 base0, base1; + u8 *fwbuf; + u16 len = 0; + u32 txlen, tx_blocks = 0, tries; + u32 i = 0; + + if (!firmware_len) { + dev_err(adapter->dev, + "firmware image not found! Terminating download\n"); + return -1; + } + + dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n", + firmware_len); + + /* Assume that the allocated buffer is 8-byte aligned */ + fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); + if (!fwbuf) + return -ENOMEM; + + /* Perform firmware data transfer */ + do { + /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY + bits */ + ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | + DN_LD_CARD_RDY); + if (ret) { + dev_err(adapter->dev, "FW download with helper:" + " poll status timeout @ %d\n", offset); + goto done; + } + + /* More data? */ + if (offset >= firmware_len) + break; + + for (tries = 0; tries < MAX_POLL_TRIES; tries++) { + ret = mwifiex_read_reg(adapter, reg->base_0_reg, + &base0); + if (ret) { + dev_err(adapter->dev, + "dev BASE0 register read failed: " + "base0=%#04X(%d). Terminating dnld\n", + base0, base0); + goto done; + } + ret = mwifiex_read_reg(adapter, reg->base_1_reg, + &base1); + if (ret) { + dev_err(adapter->dev, + "dev BASE1 register read failed: " + "base1=%#04X(%d). Terminating dnld\n", + base1, base1); + goto done; + } + len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); + + if (len) + break; + + usleep_range(10, 20); + } + + if (!len) { + break; + } else if (len > MWIFIEX_UPLD_SIZE) { + dev_err(adapter->dev, + "FW dnld failed @ %d, invalid length %d\n", + offset, len); + ret = -1; + goto done; + } + + txlen = len; + + if (len & BIT(0)) { + i++; + if (i > MAX_WRITE_IOMEM_RETRY) { + dev_err(adapter->dev, + "FW dnld failed @ %d, over max retry\n", + offset); + ret = -1; + goto done; + } + dev_err(adapter->dev, "CRC indicated by the helper:" + " len = 0x%04X, txlen = %d\n", len, txlen); + len &= ~BIT(0); + /* Setting this to 0 to resend from same offset */ + txlen = 0; + } else { + i = 0; + + /* Set blocksize to transfer - checking for last + block */ + if (firmware_len - offset < txlen) + txlen = firmware_len - offset; + + tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1) + / MWIFIEX_SDIO_BLOCK_SIZE; + + /* Copy payload to buffer */ + memmove(fwbuf, &firmware[offset], txlen); + } + + ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * + MWIFIEX_SDIO_BLOCK_SIZE, + adapter->ioport); + if (ret) { + dev_err(adapter->dev, + "FW download, write iomem (%d) failed @ %d\n", + i, offset); + if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) + dev_err(adapter->dev, "write CFG reg failed\n"); + + ret = -1; + goto done; + } + + offset += txlen; + } while (true); + + dev_notice(adapter->dev, + "info: FW download over, size %d bytes\n", offset); + + ret = 0; +done: + kfree(fwbuf); + 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) +{ + struct sdio_mmc_card *card = adapter->card; + int ret = 0; + u16 firmware_stat; + u32 tries; + u8 winner_status; + + /* Wait for firmware initialization event */ + for (tries = 0; tries < poll_num; tries++) { + ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); + if (ret) + continue; + if (firmware_stat == FIRMWARE_READY_SDIO) { + ret = 0; + break; + } else { + msleep(100); + ret = -1; + } + } + + if (ret) { + if (mwifiex_read_reg + (adapter, card->reg->status_reg_0, &winner_status)) + winner_status = 0; + + if (winner_status) + adapter->winner = 0; + else + adapter->winner = 1; + } + return ret; +} + +/* + * This function decode sdio aggreation pkt. + * + * Based on the the data block size and pkt_len, + * skb data will be decoded to few packets. + */ +static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter, + struct sk_buff *skb) +{ + u32 total_pkt_len, pkt_len; + struct sk_buff *skb_deaggr; + u32 pkt_type; + u16 blk_size; + u8 blk_num; + u8 *data; + + data = skb->data; + total_pkt_len = skb->len; + + while (total_pkt_len >= (SDIO_HEADER_OFFSET + INTF_HEADER_LEN)) { + if (total_pkt_len < adapter->sdio_rx_block_size) + break; + blk_num = *(data + BLOCK_NUMBER_OFFSET); + blk_size = adapter->sdio_rx_block_size * blk_num; + if (blk_size > total_pkt_len) { + dev_err(adapter->dev, "%s: error in pkt,\t" + "blk_num=%d, blk_size=%d, total_pkt_len=%d\n", + __func__, blk_num, blk_size, total_pkt_len); + break; + } + pkt_len = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET)); + pkt_type = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET + + 2)); + if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) { + dev_err(adapter->dev, "%s: error in pkt,\t" + "pkt_len=%d, blk_size=%d\n", + __func__, pkt_len, blk_size); + break; + } + skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len, + GFP_KERNEL | GFP_DMA); + if (!skb_deaggr) + break; + skb_put(skb_deaggr, pkt_len); + memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len); + skb_pull(skb_deaggr, INTF_HEADER_LEN); + + mwifiex_handle_rx_packet(adapter, skb_deaggr); + data += blk_size; + total_pkt_len -= blk_size; + } +} + +/* + * This function decodes a received packet. + * + * Based on the type, the packet is treated as either a data, or + * a command response, or an event, and the correct handler + * function is invoked. + */ +static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, + struct sk_buff *skb, u32 upld_typ) +{ + u8 *cmd_buf; + __le16 *curr_ptr = (__le16 *)skb->data; + u16 pkt_len = le16_to_cpu(*curr_ptr); + struct mwifiex_rxinfo *rx_info; + + if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) { + skb_trim(skb, pkt_len); + skb_pull(skb, INTF_HEADER_LEN); + } + + switch (upld_typ) { + case MWIFIEX_TYPE_AGGR_DATA: + dev_dbg(adapter->dev, "info: --- Rx: Aggr Data packet ---\n"); + rx_info = MWIFIEX_SKB_RXCB(skb); + rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA; + if (adapter->rx_work_enabled) { + skb_queue_tail(&adapter->rx_data_q, skb); + atomic_inc(&adapter->rx_pending); + adapter->data_received = true; + } else { + mwifiex_deaggr_sdio_pkt(adapter, skb); + dev_kfree_skb_any(skb); + } + break; + + case MWIFIEX_TYPE_DATA: + dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n"); + if (adapter->rx_work_enabled) { + skb_queue_tail(&adapter->rx_data_q, skb); + adapter->data_received = true; + atomic_inc(&adapter->rx_pending); + } else { + mwifiex_handle_rx_packet(adapter, skb); + } + break; + + case MWIFIEX_TYPE_CMD: + dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n"); + /* take care of curr_cmd = NULL case */ + if (!adapter->curr_cmd) { + cmd_buf = adapter->upld_buf; + + if (adapter->ps_state == PS_STATE_SLEEP_CFM) + mwifiex_process_sleep_confirm_resp(adapter, + skb->data, + skb->len); + + memcpy(cmd_buf, skb->data, + min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER, + skb->len)); + + dev_kfree_skb_any(skb); + } else { + adapter->cmd_resp_received = true; + adapter->curr_cmd->resp_skb = skb; + } + break; + + case MWIFIEX_TYPE_EVENT: + dev_dbg(adapter->dev, "info: --- Rx: Event ---\n"); + adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data); + + if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) + memcpy(adapter->event_body, + skb->data + MWIFIEX_EVENT_HEADER_LEN, + skb->len); + + /* event cause has been saved to adapter->event_cause */ + adapter->event_received = true; + adapter->event_skb = skb; + + break; + + default: + dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ); + dev_kfree_skb_any(skb); + break; + } + + return 0; +} + +/* + * This function transfers received packets from card to driver, performing + * aggregation if required. + * + * For data received on control port, or if aggregation is disabled, the + * received buffers are uploaded as separate packets. However, if aggregation + * is enabled and required, the buffers are copied onto an aggregation buffer, + * provided there is space left, processed and finally uploaded. + */ +static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, + u16 rx_len, u8 port) +{ + struct sdio_mmc_card *card = adapter->card; + s32 f_do_rx_aggr = 0; + s32 f_do_rx_cur = 0; + s32 f_aggr_cur = 0; + s32 f_post_aggr_cur = 0; + struct sk_buff *skb_deaggr; + struct sk_buff *skb = NULL; + u32 pkt_len, pkt_type, mport, pind; + u8 *curr_ptr; + + if ((card->has_control_mask) && (port == CTRL_PORT)) { + /* Read the command Resp without aggr */ + dev_dbg(adapter->dev, "info: %s: no aggregation for cmd " + "response\n", __func__); + + f_do_rx_cur = 1; + goto rx_curr_single; + } + + if (!card->mpa_rx.enabled) { + dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n", + __func__); + + f_do_rx_cur = 1; + goto rx_curr_single; + } + + if ((!card->has_control_mask && (card->mp_rd_bitmap & + card->reg->data_port_mask)) || + (card->has_control_mask && (card->mp_rd_bitmap & + (~((u32) CTRL_PORT_MASK))))) { + /* Some more data RX pending */ + dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__); + + if (MP_RX_AGGR_IN_PROGRESS(card)) { + if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) { + f_aggr_cur = 1; + } else { + /* No room in Aggr buf, do rx aggr now */ + f_do_rx_aggr = 1; + f_post_aggr_cur = 1; + } + } else { + /* Rx aggr not in progress */ + f_aggr_cur = 1; + } + + } else { + /* No more data RX pending */ + dev_dbg(adapter->dev, "info: %s: last packet\n", __func__); + + if (MP_RX_AGGR_IN_PROGRESS(card)) { + f_do_rx_aggr = 1; + if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) + f_aggr_cur = 1; + else + /* No room in Aggr buf, do rx aggr now */ + f_do_rx_cur = 1; + } else { + f_do_rx_cur = 1; + } + } + + if (f_aggr_cur) { + dev_dbg(adapter->dev, "info: current packet aggregation\n"); + /* Curr pkt can be aggregated */ + mp_rx_aggr_setup(card, rx_len, port); + + if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || + mp_rx_aggr_port_limit_reached(card)) { + dev_dbg(adapter->dev, "info: %s: aggregated packet " + "limit reached\n", __func__); + /* No more pkts allowed in Aggr buf, rx it */ + f_do_rx_aggr = 1; + } + } + + if (f_do_rx_aggr) { + /* do aggr RX now */ + dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n", + card->mpa_rx.pkt_cnt); + + if (card->supports_sdio_new_mode) { + int i; + u32 port_count; + + for (i = 0, port_count = 0; i < card->max_ports; i++) + if (card->mpa_rx.ports & BIT(i)) + port_count++; + + /* Reading data from "start_port + 0" to "start_port + + * port_count -1", so decrease the count by 1 + */ + port_count--; + mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | + (port_count << 8)) + card->mpa_rx.start_port; + } else { + mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | + (card->mpa_rx.ports << 4)) + + card->mpa_rx.start_port; + } + + if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf, + card->mpa_rx.buf_len, mport, 1)) + goto error; + + curr_ptr = card->mpa_rx.buf; + + for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { + u32 *len_arr = card->mpa_rx.len_arr; + + /* get curr PKT len & type */ + pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]); + pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]); + + /* copy pkt to deaggr buf */ + skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind], + GFP_KERNEL | + GFP_DMA); + if (!skb_deaggr) { + dev_err(adapter->dev, "skb allocation failure drop pkt len=%d type=%d\n", + pkt_len, pkt_type); + curr_ptr += len_arr[pind]; + continue; + } + + skb_put(skb_deaggr, len_arr[pind]); + + if ((pkt_type == MWIFIEX_TYPE_DATA || + (pkt_type == MWIFIEX_TYPE_AGGR_DATA && + adapter->sdio_rx_aggr_enable)) && + (pkt_len <= len_arr[pind])) { + + memcpy(skb_deaggr->data, curr_ptr, pkt_len); + + skb_trim(skb_deaggr, pkt_len); + + /* Process de-aggr packet */ + mwifiex_decode_rx_packet(adapter, skb_deaggr, + pkt_type); + } else { + dev_err(adapter->dev, " drop wrong aggr pkt:\t" + "sdio_single_port_rx_aggr=%d\t" + "type=%d len=%d max_len=%d\n", + adapter->sdio_rx_aggr_enable, + pkt_type, pkt_len, + len_arr[pind]); + dev_kfree_skb_any(skb_deaggr); + } + curr_ptr += len_arr[pind]; + } + MP_RX_AGGR_BUF_RESET(card); + } + +rx_curr_single: + if (f_do_rx_cur) { + dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n", + port, rx_len); + + skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA); + if (!skb) { + dev_err(adapter->dev, "single skb allocated fail,\t" + "drop pkt port=%d len=%d\n", port, rx_len); + if (mwifiex_sdio_card_to_host(adapter, &pkt_type, + card->mpa_rx.buf, rx_len, + adapter->ioport + port)) + goto error; + return 0; + } + + skb_put(skb, rx_len); + + if (mwifiex_sdio_card_to_host(adapter, &pkt_type, + skb->data, skb->len, + adapter->ioport + port)) + goto error; + if (!adapter->sdio_rx_aggr_enable && + pkt_type == MWIFIEX_TYPE_AGGR_DATA) { + dev_err(adapter->dev, "drop wrong pkt type %d\t" + "current SDIO RX Aggr not enabled\n", + pkt_type); + dev_kfree_skb_any(skb); + return 0; + } + + mwifiex_decode_rx_packet(adapter, skb, pkt_type); + } + if (f_post_aggr_cur) { + dev_dbg(adapter->dev, "info: current packet aggregation\n"); + /* Curr pkt can be aggregated */ + mp_rx_aggr_setup(card, rx_len, port); + } + + return 0; +error: + if (MP_RX_AGGR_IN_PROGRESS(card)) + MP_RX_AGGR_BUF_RESET(card); + + if (f_do_rx_cur && skb) + /* Single transfer pending. Free curr buff also */ + dev_kfree_skb_any(skb); + + return -1; +} + +/* + * This function checks the current interrupt status. + * + * The following interrupts are checked and handled by this function - + * - Data sent + * - Command sent + * - Packets received + * + * Since the firmware does not generate download ready interrupt if the + * port updated is command port only, command sent interrupt checking + * should be done manually, and for every SDIO interrupt. + * + * 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) +{ + struct sdio_mmc_card *card = adapter->card; + const struct mwifiex_sdio_card_reg *reg = card->reg; + int ret = 0; + u8 sdio_ireg; + struct sk_buff *skb; + u8 port = CTRL_PORT; + u32 len_reg_l, len_reg_u; + u32 rx_blocks; + u16 rx_len; + unsigned long flags; + u32 bitmap; + u8 cr; + + spin_lock_irqsave(&adapter->int_lock, flags); + sdio_ireg = adapter->int_status; + adapter->int_status = 0; + spin_unlock_irqrestore(&adapter->int_lock, flags); + + if (!sdio_ireg) + return ret; + + /* Following interrupt is only for SDIO new mode */ + if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent) + adapter->cmd_sent = false; + + /* Following interrupt is only for SDIO new mode */ + if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) { + u32 pkt_type; + + /* read the len of control packet */ + rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8; + rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0]; + rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE); + if (rx_len <= INTF_HEADER_LEN || + (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > + MWIFIEX_RX_DATA_BUF_SIZE) + return -1; + rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); + dev_dbg(adapter->dev, "info: rx_len = %d\n", rx_len); + + skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA); + if (!skb) + return -1; + + skb_put(skb, rx_len); + + if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data, + skb->len, adapter->ioport | + CMD_PORT_SLCT)) { + dev_err(adapter->dev, + "%s: failed to card_to_host", __func__); + dev_kfree_skb_any(skb); + goto term_cmd; + } + + if ((pkt_type != MWIFIEX_TYPE_CMD) && + (pkt_type != MWIFIEX_TYPE_EVENT)) + dev_err(adapter->dev, + "%s:Received wrong packet on cmd port", + __func__); + + mwifiex_decode_rx_packet(adapter, skb, pkt_type); + } + + if (sdio_ireg & DN_LD_HOST_INT_STATUS) { + bitmap = (u32) card->mp_regs[reg->wr_bitmap_l]; + bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8; + if (card->supports_sdio_new_mode) { + bitmap |= + ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16; + bitmap |= + ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24; + } + card->mp_wr_bitmap = bitmap; + + dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%x\n", + card->mp_wr_bitmap); + if (adapter->data_sent && + (card->mp_wr_bitmap & card->mp_data_port_mask)) { + dev_dbg(adapter->dev, + "info: <--- Tx DONE Interrupt --->\n"); + adapter->data_sent = false; + } + } + + /* As firmware will not generate download ready interrupt if the port + updated is command port only, cmd_sent should be done for any SDIO + interrupt. */ + if (card->has_control_mask && adapter->cmd_sent) { + /* Check if firmware has attach buffer at command port and + update just that in wr_bit_map. */ + card->mp_wr_bitmap |= + (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK; + if (card->mp_wr_bitmap & CTRL_PORT_MASK) + adapter->cmd_sent = false; + } + + dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n", + adapter->cmd_sent, adapter->data_sent); + if (sdio_ireg & UP_LD_HOST_INT_STATUS) { + bitmap = (u32) card->mp_regs[reg->rd_bitmap_l]; + bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8; + if (card->supports_sdio_new_mode) { + bitmap |= + ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16; + bitmap |= + ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24; + } + card->mp_rd_bitmap = bitmap; + dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%x\n", + card->mp_rd_bitmap); + + while (true) { + ret = mwifiex_get_rd_port(adapter, &port); + if (ret) { + dev_dbg(adapter->dev, + "info: no more rd_port available\n"); + break; + } + len_reg_l = reg->rd_len_p0_l + (port << 1); + len_reg_u = reg->rd_len_p0_u + (port << 1); + rx_len = ((u16) card->mp_regs[len_reg_u]) << 8; + rx_len |= (u16) card->mp_regs[len_reg_l]; + dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n", + port, rx_len); + rx_blocks = + (rx_len + MWIFIEX_SDIO_BLOCK_SIZE - + 1) / MWIFIEX_SDIO_BLOCK_SIZE; + if (rx_len <= INTF_HEADER_LEN || + (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > + card->mpa_rx.buf_size) { + dev_err(adapter->dev, "invalid rx_len=%d\n", + rx_len); + return -1; + } + + rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); + dev_dbg(adapter->dev, "info: rx_len = %d\n", rx_len); + + if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len, + port)) { + dev_err(adapter->dev, "card_to_host_mpa failed:" + " int status=%#x\n", sdio_ireg); + goto term_cmd; + } + } + } + + return 0; + +term_cmd: + /* terminate cmd */ + if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) + dev_err(adapter->dev, "read CFG reg failed\n"); + else + dev_dbg(adapter->dev, "info: CFG reg val = %d\n", cr); + + if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04))) + dev_err(adapter->dev, "write CFG reg failed\n"); + else + dev_dbg(adapter->dev, "info: write success\n"); + + if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) + dev_err(adapter->dev, "read CFG reg failed\n"); + else + dev_dbg(adapter->dev, "info: CFG reg val =%x\n", cr); + + return -1; +} + +/* + * This function aggregates transmission buffers in driver and downloads + * the aggregated packet to card. + * + * The individual packets are aggregated by copying into an aggregation + * buffer and then downloaded to the card. Previous unsent packets in the + * aggregation buffer are pre-copied first before new packets are added. + * Aggregation is done till there is space left in the aggregation buffer, + * or till new packets are available. + * + * The function will only download the packet to the card when aggregation + * stops, otherwise it will just aggregate the packet in aggregation buffer + * and return. + */ +static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter, + u8 *payload, u32 pkt_len, u32 port, + u32 next_pkt_len) +{ + struct sdio_mmc_card *card = adapter->card; + int ret = 0; + s32 f_send_aggr_buf = 0; + s32 f_send_cur_buf = 0; + s32 f_precopy_cur_buf = 0; + s32 f_postcopy_cur_buf = 0; + u32 mport; + + if (!card->mpa_tx.enabled || + (card->has_control_mask && (port == CTRL_PORT)) || + (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) { + dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n", + __func__); + + f_send_cur_buf = 1; + goto tx_curr_single; + } + + if (next_pkt_len) { + /* More pkt in TX queue */ + dev_dbg(adapter->dev, "info: %s: more packets in queue.\n", + __func__); + + if (MP_TX_AGGR_IN_PROGRESS(card)) { + if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { + f_precopy_cur_buf = 1; + + if (!(card->mp_wr_bitmap & + (1 << card->curr_wr_port)) || + !MP_TX_AGGR_BUF_HAS_ROOM( + card, pkt_len + next_pkt_len)) + f_send_aggr_buf = 1; + } else { + /* No room in Aggr buf, send it */ + f_send_aggr_buf = 1; + + if (!(card->mp_wr_bitmap & + (1 << card->curr_wr_port))) + f_send_cur_buf = 1; + else + f_postcopy_cur_buf = 1; + } + } else { + if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) && + (card->mp_wr_bitmap & (1 << card->curr_wr_port))) + f_precopy_cur_buf = 1; + else + f_send_cur_buf = 1; + } + } else { + /* Last pkt in TX queue */ + dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n", + __func__); + + if (MP_TX_AGGR_IN_PROGRESS(card)) { + /* some packs in Aggr buf already */ + f_send_aggr_buf = 1; + + if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) + f_precopy_cur_buf = 1; + else + /* No room in Aggr buf, send it */ + f_send_cur_buf = 1; + } else { + f_send_cur_buf = 1; + } + } + + if (f_precopy_cur_buf) { + dev_dbg(adapter->dev, "data: %s: precopy current buffer\n", + __func__); + MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); + + if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || + mp_tx_aggr_port_limit_reached(card)) + /* No more pkts allowed in Aggr buf, send it */ + f_send_aggr_buf = 1; + } + + if (f_send_aggr_buf) { + dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n", + __func__, + card->mpa_tx.start_port, card->mpa_tx.ports); + if (card->supports_sdio_new_mode) { + u32 port_count; + int i; + + for (i = 0, port_count = 0; i < card->max_ports; i++) + if (card->mpa_tx.ports & BIT(i)) + port_count++; + + /* Writing data from "start_port + 0" to "start_port + + * port_count -1", so decrease the count by 1 + */ + port_count--; + mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | + (port_count << 8)) + card->mpa_tx.start_port; + } else { + mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | + (card->mpa_tx.ports << 4)) + + card->mpa_tx.start_port; + } + + ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf, + card->mpa_tx.buf_len, mport); + + MP_TX_AGGR_BUF_RESET(card); + } + +tx_curr_single: + if (f_send_cur_buf) { + dev_dbg(adapter->dev, "data: %s: send current buffer %d\n", + __func__, port); + ret = mwifiex_write_data_to_card(adapter, payload, pkt_len, + adapter->ioport + port); + } + + if (f_postcopy_cur_buf) { + dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n", + __func__); + MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); + } + + return ret; +} + +/* + * 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 SDIO 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_sdio_host_to_card(struct mwifiex_adapter *adapter, + u8 type, struct sk_buff *skb, + struct mwifiex_tx_param *tx_param) +{ + struct sdio_mmc_card *card = adapter->card; + int ret; + u32 buf_block_len; + u32 blk_size; + u32 port = CTRL_PORT; + u8 *payload = (u8 *)skb->data; + u32 pkt_len = skb->len; + + /* Allocate buffer and copy payload */ + blk_size = MWIFIEX_SDIO_BLOCK_SIZE; + buf_block_len = (pkt_len + blk_size - 1) / blk_size; + *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len); + *(__le16 *)&payload[2] = cpu_to_le16(type); + + /* + * This is SDIO specific header + * u16 length, + * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, + * MWIFIEX_TYPE_EVENT = 3) + */ + if (type == MWIFIEX_TYPE_DATA) { + ret = mwifiex_get_wr_port_data(adapter, &port); + if (ret) { + dev_err(adapter->dev, "%s: no wr_port available\n", + __func__); + return ret; + } + } else { + adapter->cmd_sent = true; + /* Type must be MWIFIEX_TYPE_CMD */ + + if (pkt_len <= INTF_HEADER_LEN || + pkt_len > MWIFIEX_UPLD_SIZE) + dev_err(adapter->dev, "%s: payload=%p, nb=%d\n", + __func__, payload, pkt_len); + + if (card->supports_sdio_new_mode) + port = CMD_PORT_SLCT; + } + + /* Transfer data to card */ + pkt_len = buf_block_len * blk_size; + + if (tx_param) + ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, + port, tx_param->next_pkt_len + ); + else + ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, + port, 0); + + if (ret) { + if (type == MWIFIEX_TYPE_CMD) + adapter->cmd_sent = false; + if (type == MWIFIEX_TYPE_DATA) { + adapter->data_sent = false; + /* restore curr_wr_port in error cases */ + card->curr_wr_port = port; + card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port); + } + } else { + if (type == MWIFIEX_TYPE_DATA) { + if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) + adapter->data_sent = true; + else + adapter->data_sent = false; + } + } + + return ret; +} + +/* + * This function allocates the MPA Tx and Rx buffers. + */ +static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, + u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) +{ + struct sdio_mmc_card *card = adapter->card; + u32 rx_buf_size; + int ret = 0; + + card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); + if (!card->mpa_tx.buf) { + ret = -1; + goto error; + } + + card->mpa_tx.buf_size = mpa_tx_buf_size; + + rx_buf_size = max_t(u32, mpa_rx_buf_size, + (u32)SDIO_MAX_AGGR_BUF_SIZE); + card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL); + if (!card->mpa_rx.buf) { + ret = -1; + goto error; + } + + card->mpa_rx.buf_size = rx_buf_size; + +error: + if (ret) { + kfree(card->mpa_tx.buf); + kfree(card->mpa_rx.buf); + } + + return ret; +} + +/* + * This function unregisters the SDIO device. + * + * The SDIO IRQ is released, the function is disabled and driver + * data is set to null. + */ +static void +mwifiex_unregister_dev(struct mwifiex_adapter *adapter) +{ + struct sdio_mmc_card *card = adapter->card; + + if (adapter->card) { + sdio_claim_host(card->func); + sdio_disable_func(card->func); + sdio_release_host(card->func); + } +} + +/* + * This function registers the SDIO device. + * + * SDIO IRQ is claimed, block size is set and driver data is initialized. + */ +static int mwifiex_register_dev(struct mwifiex_adapter *adapter) +{ + int ret; + struct sdio_mmc_card *card = adapter->card; + struct sdio_func *func = card->func; + + /* save adapter pointer in card */ + card->adapter = adapter; + adapter->tx_buf_size = card->tx_buf_size; + + sdio_claim_host(func); + + /* Set block size */ + ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); + sdio_release_host(func); + if (ret) { + pr_err("cannot set SDIO block size\n"); + return ret; + } + + + adapter->dev = &func->dev; + + strcpy(adapter->fw_name, card->firmware); + adapter->mem_type_mapping_tbl = mem_type_mapping_tbl; + adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl); + + return 0; +} + +/* + * This function initializes the SDIO driver. + * + * The following initializations steps are followed - + * - Read the Host interrupt status register to acknowledge + * the first interrupt got from bootloader + * - Disable host interrupt mask register + * - Get SDIO port + * - Initialize SDIO variables in card + * - Allocate MP registers + * - Allocate MPA Tx and Rx buffers + */ +static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) +{ + struct sdio_mmc_card *card = adapter->card; + const struct mwifiex_sdio_card_reg *reg = card->reg; + int ret; + u8 sdio_ireg; + + sdio_set_drvdata(card->func, card); + + /* + * Read the host_int_status_reg for ACK the first interrupt got + * from the bootloader. If we don't do this we get a interrupt + * as soon as we register the irq. + */ + mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); + + /* Get SDIO ioport */ + mwifiex_init_sdio_ioport(adapter); + + /* Initialize SDIO variables in card */ + card->mp_rd_bitmap = 0; + card->mp_wr_bitmap = 0; + card->curr_rd_port = reg->start_rd_port; + card->curr_wr_port = reg->start_wr_port; + + card->mp_data_port_mask = reg->data_port_mask; + + card->mpa_tx.buf_len = 0; + card->mpa_tx.pkt_cnt = 0; + card->mpa_tx.start_port = 0; + + card->mpa_tx.enabled = 1; + card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit; + + card->mpa_rx.buf_len = 0; + card->mpa_rx.pkt_cnt = 0; + card->mpa_rx.start_port = 0; + + card->mpa_rx.enabled = 1; + card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit; + + /* Allocate buffers for SDIO MP-A */ + card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL); + if (!card->mp_regs) + return -ENOMEM; + + /* Allocate skb pointer buffers */ + card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) * + card->mp_agg_pkt_limit, GFP_KERNEL); + card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) * + card->mp_agg_pkt_limit, GFP_KERNEL); + ret = mwifiex_alloc_sdio_mpa_buffers(adapter, + card->mp_tx_agg_buf_size, + card->mp_rx_agg_buf_size); + if (ret) { + dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n"); + kfree(card->mp_regs); + return -1; + } + + adapter->auto_tdls = card->can_auto_tdls; + adapter->ext_scan = card->can_ext_scan; + return ret; +} + +/* + * This function resets the MPA Tx and Rx buffers. + */ +static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) +{ + struct sdio_mmc_card *card = adapter->card; + + MP_TX_AGGR_BUF_RESET(card); + MP_RX_AGGR_BUF_RESET(card); +} + +/* + * This function cleans up the allocated card buffers. + * + * The following are freed by this function - + * - MP registers + * - MPA Tx buffer + * - MPA Rx buffer + */ +static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) +{ + struct sdio_mmc_card *card = adapter->card; + + kfree(card->mp_regs); + kfree(card->mpa_rx.skb_arr); + kfree(card->mpa_rx.len_arr); + kfree(card->mpa_tx.buf); + kfree(card->mpa_rx.buf); + sdio_set_drvdata(card->func, NULL); + kfree(card); +} + +/* + * This function updates the MP end port in card. + */ +static void +mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) +{ + struct sdio_mmc_card *card = adapter->card; + const struct mwifiex_sdio_card_reg *reg = card->reg; + int i; + + card->mp_end_port = port; + + card->mp_data_port_mask = reg->data_port_mask; + + if (reg->start_wr_port) { + for (i = 1; i <= card->max_ports - card->mp_end_port; i++) + card->mp_data_port_mask &= + ~(1 << (card->max_ports - i)); + } + + card->curr_wr_port = reg->start_wr_port; + + dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n", + port, card->mp_data_port_mask); +} + +static struct mwifiex_adapter *save_adapter; +static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter) +{ + struct sdio_mmc_card *card = adapter->card; + struct mmc_host *target = card->func->card->host; + + /* The actual reset operation must be run outside of driver thread. + * This is because mmc_remove_host() will cause the device to be + * instantly destroyed, and the driver then needs to end its thread, + * leading to a deadlock. + * + * We run it in a totally independent workqueue. + */ + + pr_err("Resetting card...\n"); + mmc_remove_host(target); + /* 200ms delay is based on experiment with sdhci controller */ + mdelay(200); + target->rescan_entered = 0; /* rescan non-removable cards */ + mmc_add_host(target); +} + +/* This function read/write firmware */ +static enum +rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter, + u8 doneflag) +{ + struct sdio_mmc_card *card = adapter->card; + int ret, tries; + u8 ctrl_data = 0; + + sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl, + &ret); + if (ret) { + dev_err(adapter->dev, "SDIO Write ERR\n"); + return RDWR_STATUS_FAILURE; + } + for (tries = 0; tries < MAX_POLL_TRIES; tries++) { + ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl, + &ret); + if (ret) { + dev_err(adapter->dev, "SDIO read err\n"); + return RDWR_STATUS_FAILURE; + } + if (ctrl_data == FW_DUMP_DONE) + break; + if (doneflag && ctrl_data == doneflag) + return RDWR_STATUS_DONE; + if (ctrl_data != FW_DUMP_HOST_READY) { + dev_info(adapter->dev, + "The ctrl reg was changed, re-try again!\n"); + sdio_writeb(card->func, FW_DUMP_HOST_READY, + card->reg->fw_dump_ctrl, &ret); + if (ret) { + dev_err(adapter->dev, "SDIO write err\n"); + return RDWR_STATUS_FAILURE; + } + } + usleep_range(100, 200); + } + if (ctrl_data == FW_DUMP_HOST_READY) { + dev_err(adapter->dev, "Fail to pull ctrl_data\n"); + return RDWR_STATUS_FAILURE; + } + + return RDWR_STATUS_SUCCESS; +} + +/* This function dump firmware memory to file */ +static void mwifiex_sdio_fw_dump_work(struct mwifiex_adapter *adapter) +{ + struct sdio_mmc_card *card = adapter->card; + int ret = 0; + 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; + static char *env[] = { "DRIVER=mwifiex_sdio", "EVENT=fw_dump", NULL }; + + mwifiex_dump_drv_info(adapter); + + if (!card->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_pm_wakeup_card(adapter); + sdio_claim_host(card->func); + + dev_info(adapter->dev, "== mwifiex firmware dump start ==\n"); + + stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); + if (stat == RDWR_STATUS_FAILURE) + goto done; + + reg = card->reg->fw_dump_start; + /* Read the number of the memories which will dump */ + dump_num = sdio_readb(card->func, reg, &ret); + if (ret) { + dev_err(adapter->dev, "SDIO read memory length err\n"); + goto done; + } + + /* 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_sdio_rdwr_firmware(adapter, doneflag); + if (stat == RDWR_STATUS_FAILURE) + goto done; + + memory_size = 0; + reg = card->reg->fw_dump_start; + for (i = 0; i < 4; i++) { + read_reg = sdio_readb(card->func, reg, &ret); + if (ret) { + dev_err(adapter->dev, "SDIO read err\n"); + goto done; + } + memory_size |= (read_reg << i*8); + reg++; + } + + if (memory_size == 0) { + dev_info(adapter->dev, "Firmware dump Finished!\n"); + break; + } + + dev_info(adapter->dev, + "%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) { + dev_err(adapter->dev, "Vmalloc %s failed\n", + entry->mem_name); + goto done; + } + dbg_ptr = entry->mem_ptr; + end_ptr = dbg_ptr + memory_size; + + doneflag = entry->done_flag; + dev_info(adapter->dev, "Start %s output, please wait...\n", + entry->mem_name); + + do { + stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); + if (stat == RDWR_STATUS_FAILURE) + goto done; + + reg_start = card->reg->fw_dump_start; + reg_end = card->reg->fw_dump_end; + for (reg = reg_start; reg <= reg_end; reg++) { + *dbg_ptr = sdio_readb(card->func, reg, &ret); + if (ret) { + dev_err(adapter->dev, + "SDIO read err\n"); + goto done; + } + if (dbg_ptr < end_ptr) + dbg_ptr++; + else + dev_err(adapter->dev, + "Allocated buf not enough\n"); + } + + if (stat != RDWR_STATUS_DONE) + continue; + + dev_info(adapter->dev, "%s done: size=0x%tx\n", + entry->mem_name, dbg_ptr - entry->mem_ptr); + break; + } while (1); + } + dev_info(adapter->dev, "== mwifiex firmware dump end ==\n"); + + kobject_uevent_env(&adapter->wiphy->dev.kobj, KOBJ_CHANGE, env); + +done: + sdio_release_host(card->func); + adapter->curr_mem_idx = 0; +} + +static void mwifiex_sdio_work(struct work_struct *work) +{ + if (test_and_clear_bit(MWIFIEX_IFACE_WORK_FW_DUMP, + &iface_work_flags)) + mwifiex_sdio_fw_dump_work(save_adapter); + if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, + &iface_work_flags)) + mwifiex_sdio_card_reset_work(save_adapter); +} + +static DECLARE_WORK(sdio_work, mwifiex_sdio_work); +/* This function resets the card */ +static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter) +{ + save_adapter = adapter; + if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags)) + return; + + set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags); + + schedule_work(&sdio_work); +} + +/* This function dumps FW information */ +static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter) +{ + save_adapter = adapter; + if (test_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &iface_work_flags)) + return; + + set_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &iface_work_flags); + schedule_work(&sdio_work); +} + +/* Function to dump SDIO function registers and SDIO scratch registers in case + * of FW crash + */ +static int +mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf) +{ + char *p = drv_buf; + struct sdio_mmc_card *cardp = adapter->card; + int ret = 0; + u8 count, func, data, index = 0, size = 0; + u8 reg, reg_start, reg_end; + char buf[256], *ptr; + + if (!p) + return 0; + + dev_info(adapter->dev, "SDIO register DUMP START\n"); + + mwifiex_pm_wakeup_card(adapter); + + sdio_claim_host(cardp->func); + + for (count = 0; count < 5; count++) { + memset(buf, 0, sizeof(buf)); + ptr = buf; + + switch (count) { + case 0: + /* Read the registers of SDIO function0 */ + func = count; + reg_start = 0; + reg_end = 9; + break; + case 1: + /* Read the registers of SDIO function1 */ + func = count; + reg_start = cardp->reg->func1_dump_reg_start; + reg_end = cardp->reg->func1_dump_reg_end; + break; + case 2: + index = 0; + func = 1; + reg_start = cardp->reg->func1_spec_reg_table[index++]; + size = cardp->reg->func1_spec_reg_num; + reg_end = cardp->reg->func1_spec_reg_table[size-1]; + break; + default: + /* Read the scratch registers of SDIO function1 */ + if (count == 4) + mdelay(100); + func = 1; + reg_start = cardp->reg->func1_scratch_reg; + reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE; + } + + if (count != 2) + ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ", + func, reg_start, reg_end); + else + ptr += sprintf(ptr, "SDIO Func%d: ", func); + + for (reg = reg_start; reg <= reg_end;) { + if (func == 0) + data = sdio_f0_readb(cardp->func, reg, &ret); + else + data = sdio_readb(cardp->func, reg, &ret); + + if (count == 2) + ptr += sprintf(ptr, "(%#x) ", reg); + if (!ret) { + ptr += sprintf(ptr, "%02x ", data); + } else { + ptr += sprintf(ptr, "ERR"); + break; + } + + if (count == 2 && reg < reg_end) + reg = cardp->reg->func1_spec_reg_table[index++]; + else + reg++; + } + + dev_info(adapter->dev, "%s\n", buf); + p += sprintf(p, "%s\n", buf); + } + + sdio_release_host(cardp->func); + + dev_info(adapter->dev, "SDIO register DUMP END\n"); + + return p - drv_buf; +} + +static struct mwifiex_if_ops sdio_ops = { + .init_if = mwifiex_init_sdio, + .cleanup_if = mwifiex_cleanup_sdio, + .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_sdio_enable_host_int, + .disable_int = mwifiex_sdio_disable_host_int, + .process_int_status = mwifiex_process_int_status, + .host_to_card = mwifiex_sdio_host_to_card, + .wakeup = mwifiex_pm_wakeup_card, + .wakeup_complete = mwifiex_pm_wakeup_card_complete, + + /* SDIO specific */ + .update_mp_end_port = mwifiex_update_mp_end_port, + .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf, + .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete, + .event_complete = mwifiex_sdio_event_complete, + .card_reset = mwifiex_sdio_card_reset, + .fw_dump = mwifiex_sdio_fw_dump, + .reg_dump = mwifiex_sdio_reg_dump, + .deaggr_pkt = mwifiex_deaggr_sdio_pkt, +}; + +/* + * This function initializes the SDIO driver. + * + * This initiates the semaphore and registers the device with + * SDIO bus. + */ +static int +mwifiex_sdio_init_module(void) +{ + sema_init(&add_remove_card_sem, 1); + + /* Clear the flag in case user removes the card. */ + user_rmmod = 0; + + return sdio_register_driver(&mwifiex_sdio); +} + +/* + * This function cleans up the SDIO 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 SDIO bus. + */ +static void +mwifiex_sdio_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(&sdio_work); + + sdio_unregister_driver(&mwifiex_sdio); +} + +module_init(mwifiex_sdio_init_module); +module_exit(mwifiex_sdio_cleanup_module); + +MODULE_AUTHOR("Marvell International Ltd."); +MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); +MODULE_VERSION(SDIO_VERSION); +MODULE_LICENSE("GPL v2"); +/*(DEBLOBBED)*/ |