diff options
Diffstat (limited to 'drivers/staging/csr/putest.c')
-rw-r--r-- | drivers/staging/csr/putest.c | 685 |
1 files changed, 685 insertions, 0 deletions
diff --git a/drivers/staging/csr/putest.c b/drivers/staging/csr/putest.c new file mode 100644 index 0000000..5613cf0 --- /dev/null +++ b/drivers/staging/csr/putest.c @@ -0,0 +1,685 @@ +/* + * *************************************************************************** + * FILE: putest.c + * + * PURPOSE: putest related functions. + * + * Copyright (C) 2008-2009 by Cambridge Silicon Radio Ltd. + * + * Refer to LICENSE.txt included with this source code for details on + * the license terms. + * + * *************************************************************************** + */ + +#include <linux/vmalloc.h> +#include <linux/firmware.h> + +#include "unifi_priv.h" +#include "csr_wifi_hip_chiphelper.h" + +#define UNIFI_PROC_BOTH 3 + + +int unifi_putest_cmd52_read(unifi_priv_t *priv, unsigned char *arg) +{ + struct unifi_putest_cmd52 cmd52_params; + u8 *arg_pos; + unsigned int cmd_param_size; + int r; + CsrResult csrResult; + unsigned char ret_buffer[32]; + u8 *ret_buffer_pos; + u8 retries; + + arg_pos = (u8*)(((unifi_putest_command_t*)arg) + 1); + if (get_user(cmd_param_size, (int*)arg_pos)) { + unifi_error(priv, + "unifi_putest_cmd52_read: Failed to get the argument\n"); + return -EFAULT; + } + + if (cmd_param_size != sizeof(struct unifi_putest_cmd52)) { + unifi_error(priv, + "unifi_putest_cmd52_read: cmd52 struct mismatch\n"); + return -EINVAL; + } + + arg_pos += sizeof(unsigned int); + if (copy_from_user(&cmd52_params, + (void*)arg_pos, + sizeof(struct unifi_putest_cmd52))) { + unifi_error(priv, + "unifi_putest_cmd52_read: Failed to get the cmd52 params\n"); + return -EFAULT; + } + + unifi_trace(priv, UDBG2, "cmd52r: func=%d addr=0x%x ", + cmd52_params.funcnum, cmd52_params.addr); + + retries = 3; + CsrSdioClaim(priv->sdio); + do { + if (cmd52_params.funcnum == 0) { + csrResult = CsrSdioF0Read8(priv->sdio, cmd52_params.addr, &cmd52_params.data); + } else { + csrResult = CsrSdioRead8(priv->sdio, cmd52_params.addr, &cmd52_params.data); + } + } while (--retries && ((csrResult == CSR_SDIO_RESULT_CRC_ERROR) || (csrResult == CSR_SDIO_RESULT_TIMEOUT))); + CsrSdioRelease(priv->sdio); + + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, + "\nunifi_putest_cmd52_read: Read8() failed (csrResult=0x%x)\n", csrResult); + return -EFAULT; + } + unifi_trace(priv, UDBG2, "data=%d\n", cmd52_params.data); + + /* Copy the info to the out buffer */ + *(unifi_putest_command_t*)ret_buffer = UNIFI_PUTEST_CMD52_READ; + ret_buffer_pos = (u8*)(((unifi_putest_command_t*)ret_buffer) + 1); + *(unsigned int*)ret_buffer_pos = sizeof(struct unifi_putest_cmd52); + ret_buffer_pos += sizeof(unsigned int); + memcpy(ret_buffer_pos, &cmd52_params, sizeof(struct unifi_putest_cmd52)); + ret_buffer_pos += sizeof(struct unifi_putest_cmd52); + + r = copy_to_user((void*)arg, + ret_buffer, + ret_buffer_pos - ret_buffer); + if (r) { + unifi_error(priv, + "unifi_putest_cmd52_read: Failed to return the data\n"); + return -EFAULT; + } + + return 0; +} + + +int unifi_putest_cmd52_write(unifi_priv_t *priv, unsigned char *arg) +{ + struct unifi_putest_cmd52 cmd52_params; + u8 *arg_pos; + unsigned int cmd_param_size; + CsrResult csrResult; + u8 retries; + + arg_pos = (u8*)(((unifi_putest_command_t*)arg) + 1); + if (get_user(cmd_param_size, (int*)arg_pos)) { + unifi_error(priv, + "unifi_putest_cmd52_write: Failed to get the argument\n"); + return -EFAULT; + } + + if (cmd_param_size != sizeof(struct unifi_putest_cmd52)) { + unifi_error(priv, + "unifi_putest_cmd52_write: cmd52 struct mismatch\n"); + return -EINVAL; + } + + arg_pos += sizeof(unsigned int); + if (copy_from_user(&cmd52_params, + (void*)(arg_pos), + sizeof(struct unifi_putest_cmd52))) { + unifi_error(priv, + "unifi_putest_cmd52_write: Failed to get the cmd52 params\n"); + return -EFAULT; + } + + unifi_trace(priv, UDBG2, "cmd52w: func=%d addr=0x%x data=%d\n", + cmd52_params.funcnum, cmd52_params.addr, cmd52_params.data); + + retries = 3; + CsrSdioClaim(priv->sdio); + do { + if (cmd52_params.funcnum == 0) { + csrResult = CsrSdioF0Write8(priv->sdio, cmd52_params.addr, cmd52_params.data); + } else { + csrResult = CsrSdioWrite8(priv->sdio, cmd52_params.addr, cmd52_params.data); + } + } while (--retries && ((csrResult == CSR_SDIO_RESULT_CRC_ERROR) || (csrResult == CSR_SDIO_RESULT_TIMEOUT))); + CsrSdioRelease(priv->sdio); + + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, + "unifi_putest_cmd52_write: Write8() failed (csrResult=0x%x)\n", csrResult); + return -EFAULT; + } + + return 0; +} + +int unifi_putest_gp_read16(unifi_priv_t *priv, unsigned char *arg) +{ + struct unifi_putest_gp_rw16 gp_r16_params; + u8 *arg_pos; + unsigned int cmd_param_size; + int r; + CsrResult csrResult; + unsigned char ret_buffer[32]; + u8 *ret_buffer_pos; + + arg_pos = (u8*)(((unifi_putest_command_t*)arg) + 1); + if (get_user(cmd_param_size, (int*)arg_pos)) { + unifi_error(priv, + "unifi_putest_gp_read16: Failed to get the argument\n"); + return -EFAULT; + } + + if (cmd_param_size != sizeof(struct unifi_putest_gp_rw16)) { + unifi_error(priv, + "unifi_putest_gp_read16: struct mismatch\n"); + return -EINVAL; + } + + arg_pos += sizeof(unsigned int); + if (copy_from_user(&gp_r16_params, + (void*)arg_pos, + sizeof(struct unifi_putest_gp_rw16))) { + unifi_error(priv, + "unifi_putest_gp_read16: Failed to get the params\n"); + return -EFAULT; + } + CsrSdioClaim(priv->sdio); + csrResult = unifi_card_read16(priv->card, gp_r16_params.addr, &gp_r16_params.data); + CsrSdioRelease(priv->sdio); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, + "unifi_putest_gp_read16: unifi_card_read16() GP=0x%x failed (csrResult=0x%x)\n", gp_r16_params.addr, csrResult); + return -EFAULT; + } + + unifi_trace(priv, UDBG2, "gp_r16: GP=0x%08x, data=0x%04x\n", gp_r16_params.addr, gp_r16_params.data); + + /* Copy the info to the out buffer */ + *(unifi_putest_command_t*)ret_buffer = UNIFI_PUTEST_GP_READ16; + ret_buffer_pos = (u8*)(((unifi_putest_command_t*)ret_buffer) + 1); + *(unsigned int*)ret_buffer_pos = sizeof(struct unifi_putest_gp_rw16); + ret_buffer_pos += sizeof(unsigned int); + memcpy(ret_buffer_pos, &gp_r16_params, sizeof(struct unifi_putest_gp_rw16)); + ret_buffer_pos += sizeof(struct unifi_putest_gp_rw16); + + r = copy_to_user((void*)arg, + ret_buffer, + ret_buffer_pos - ret_buffer); + if (r) { + unifi_error(priv, + "unifi_putest_gp_read16: Failed to return the data\n"); + return -EFAULT; + } + + return 0; +} + +int unifi_putest_gp_write16(unifi_priv_t *priv, unsigned char *arg) +{ + struct unifi_putest_gp_rw16 gp_w16_params; + u8 *arg_pos; + unsigned int cmd_param_size; + CsrResult csrResult; + + arg_pos = (u8*)(((unifi_putest_command_t*)arg) + 1); + if (get_user(cmd_param_size, (int*)arg_pos)) { + unifi_error(priv, + "unifi_putest_gp_write16: Failed to get the argument\n"); + return -EFAULT; + } + + if (cmd_param_size != sizeof(struct unifi_putest_gp_rw16)) { + unifi_error(priv, + "unifi_putest_gp_write16: struct mismatch\n"); + return -EINVAL; + } + + arg_pos += sizeof(unsigned int); + if (copy_from_user(&gp_w16_params, + (void*)(arg_pos), + sizeof(struct unifi_putest_gp_rw16))) { + unifi_error(priv, + "unifi_putest_gp_write16: Failed to get the params\n"); + return -EFAULT; + } + + unifi_trace(priv, UDBG2, "gp_w16: GP=0x%08x, data=0x%04x\n", gp_w16_params.addr, gp_w16_params.data); + CsrSdioClaim(priv->sdio); + csrResult = unifi_card_write16(priv->card, gp_w16_params.addr, gp_w16_params.data); + CsrSdioRelease(priv->sdio); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, + "unifi_putest_gp_write16: unifi_card_write16() GP=%x failed (csrResult=0x%x)\n", gp_w16_params.addr, csrResult); + return -EFAULT; + } + + return 0; +} + +int unifi_putest_set_sdio_clock(unifi_priv_t *priv, unsigned char *arg) +{ + int sdio_clock_speed; + CsrResult csrResult; + + if (get_user(sdio_clock_speed, (int*)(((unifi_putest_command_t*)arg) + 1))) { + unifi_error(priv, + "unifi_putest_set_sdio_clock: Failed to get the argument\n"); + return -EFAULT; + } + + unifi_trace(priv, UDBG2, "set sdio clock: %d KHz\n", sdio_clock_speed); + + CsrSdioClaim(priv->sdio); + csrResult = CsrSdioMaxBusClockFrequencySet(priv->sdio, sdio_clock_speed * 1000); + CsrSdioRelease(priv->sdio); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, + "unifi_putest_set_sdio_clock: Set clock failed (csrResult=0x%x)\n", csrResult); + return -EFAULT; + } + + return 0; +} + + +int unifi_putest_start(unifi_priv_t *priv, unsigned char *arg) +{ + int r; + CsrResult csrResult; + int already_in_test = priv->ptest_mode; + + /* Ensure that sme_sys_suspend() doesn't power down the chip because: + * 1) Power is needed anyway for ptest. + * 2) The app code uses the START ioctl as a reset, so it gets called + * multiple times. If the app stops the XAPs, but the power_down/up + * sequence doesn't actually power down the chip, there can be problems + * resetting, because part of the power_up sequence disables function 1 + */ + priv->ptest_mode = 1; + + /* Suspend the SME and UniFi */ + if (priv->sme_cli) { + r = sme_sys_suspend(priv); + if (r) { + unifi_error(priv, + "unifi_putest_start: failed to suspend UniFi\n"); + return r; + } + } + + /* Application may have stopped the XAPs, but they are needed for reset */ + if (already_in_test) { + CsrSdioClaim(priv->sdio); + csrResult = unifi_start_processors(priv->card); + CsrSdioRelease(priv->sdio); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, "Failed to start XAPs. Hard reset required.\n"); + } + } else { + /* Ensure chip is powered for the case where there's no unifi_helper */ + CsrSdioClaim(priv->sdio); + csrResult = CsrSdioPowerOn(priv->sdio); + CsrSdioRelease(priv->sdio); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, "CsrSdioPowerOn csrResult = %d\n", csrResult); + } + } + CsrSdioClaim(priv->sdio); + csrResult = unifi_init(priv->card); + CsrSdioRelease(priv->sdio); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, + "unifi_putest_start: failed to init UniFi\n"); + return CsrHipResultToStatus(csrResult); + } + + return 0; +} + + +int unifi_putest_stop(unifi_priv_t *priv, unsigned char *arg) +{ + int r = 0; + CsrResult csrResult; + + /* Application may have stopped the XAPs, but they are needed for reset */ + CsrSdioClaim(priv->sdio); + csrResult = unifi_start_processors(priv->card); + CsrSdioRelease(priv->sdio); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, "Failed to start XAPs. Hard reset required.\n"); + } + + /* PUTEST_STOP is also used to resume the XAPs after SME coredump. + * Don't power off the chip, leave that to the normal wifi-off which is + * about to carry on. No need to resume the SME either, as it wasn't suspended. + */ + if (priv->coredump_mode) { + priv->coredump_mode = 0; + return 0; + } + + /* At this point function 1 is enabled and the XAPs are running, so it is + * safe to let the card power down. Power is restored later, asynchronously, + * during the wifi_on requested by the SME. + */ + CsrSdioClaim(priv->sdio); + CsrSdioPowerOff(priv->sdio); + CsrSdioRelease(priv->sdio); + + /* Resume the SME and UniFi */ + if (priv->sme_cli) { + r = sme_sys_resume(priv); + if (r) { + unifi_error(priv, + "unifi_putest_stop: failed to resume SME\n"); + } + } + priv->ptest_mode = 0; + + return r; +} + + +int unifi_putest_dl_fw(unifi_priv_t *priv, unsigned char *arg) +{ +#define UF_PUTEST_MAX_FW_FILE_NAME 16 +#define UNIFI_MAX_FW_PATH_LEN 32 + unsigned int fw_name_length; + unsigned char fw_name[UF_PUTEST_MAX_FW_FILE_NAME+1]; + unsigned char *name_buffer; + int postfix; + char fw_path[UNIFI_MAX_FW_PATH_LEN]; + const struct firmware *fw_entry; + struct dlpriv temp_fw_sta; + int r; + CsrResult csrResult; + + /* Get the f/w file name length */ + if (get_user(fw_name_length, (unsigned int*)(((unifi_putest_command_t*)arg) + 1))) { + unifi_error(priv, + "unifi_putest_dl_fw: Failed to get the length argument\n"); + return -EFAULT; + } + + unifi_trace(priv, UDBG2, "unifi_putest_dl_fw: file name size = %d\n", fw_name_length); + + /* Sanity check for the f/w file name length */ + if (fw_name_length > UF_PUTEST_MAX_FW_FILE_NAME) { + unifi_error(priv, + "unifi_putest_dl_fw: F/W file name is too long\n"); + return -EINVAL; + } + + /* Get the f/w file name */ + name_buffer = ((unsigned char*)arg) + sizeof(unifi_putest_command_t) + sizeof(unsigned int); + if (copy_from_user(fw_name, (void*)name_buffer, fw_name_length)) { + unifi_error(priv, "unifi_putest_dl_fw: Failed to get the file name\n"); + return -EFAULT; + } + fw_name[fw_name_length] = '\0'; + unifi_trace(priv, UDBG2, "unifi_putest_dl_fw: file = %s\n", fw_name); + + /* Keep the existing f/w to a temp, we need to restore it later */ + temp_fw_sta = priv->fw_sta; + + /* Get the putest f/w */ + postfix = priv->instance; + scnprintf(fw_path, UNIFI_MAX_FW_PATH_LEN, "unifi-sdio-%d/%s", + postfix, fw_name); + r = request_firmware(&fw_entry, fw_path, priv->unifi_device); + if (r == 0) { + priv->fw_sta.fw_desc = (void *)fw_entry; + priv->fw_sta.dl_data = fw_entry->data; + priv->fw_sta.dl_len = fw_entry->size; + } else { + unifi_error(priv, "Firmware file not available\n"); + return -EINVAL; + } + + /* Application may have stopped the XAPs, but they are needed for reset */ + CsrSdioClaim(priv->sdio); + csrResult = unifi_start_processors(priv->card); + CsrSdioRelease(priv->sdio); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, "Failed to start XAPs. Hard reset required.\n"); + } + + /* Download the f/w. On UF6xxx this will cause the f/w file to convert + * into patch format and download via the ROM boot loader + */ + CsrSdioClaim(priv->sdio); + csrResult = unifi_download(priv->card, 0x0c00); + CsrSdioRelease(priv->sdio); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, + "unifi_putest_dl_fw: failed to download the f/w\n"); + goto free_fw; + } + + /* Free the putest f/w... */ +free_fw: + uf_release_firmware(priv, &priv->fw_sta); + /* ... and restore the original f/w */ + priv->fw_sta = temp_fw_sta; + + return CsrHipResultToStatus(csrResult); +} + + +int unifi_putest_dl_fw_buff(unifi_priv_t *priv, unsigned char *arg) +{ + unsigned int fw_length; + unsigned char *fw_buf = NULL; + unsigned char *fw_user_ptr; + struct dlpriv temp_fw_sta; + CsrResult csrResult; + + /* Get the f/w buffer length */ + if (get_user(fw_length, (unsigned int*)(((unifi_putest_command_t*)arg) + 1))) { + unifi_error(priv, + "unifi_putest_dl_fw_buff: Failed to get the length arg\n"); + return -EFAULT; + } + + unifi_trace(priv, UDBG2, "unifi_putest_dl_fw_buff: size = %d\n", fw_length); + + /* Sanity check for the buffer length */ + if (fw_length == 0 || fw_length > 0xfffffff) { + unifi_error(priv, + "unifi_putest_dl_fw_buff: buffer length bad %u\n", fw_length); + return -EINVAL; + } + + /* Buffer for kernel copy of the f/w image */ + fw_buf = kmalloc(fw_length, GFP_KERNEL); + if (!fw_buf) { + unifi_error(priv, "unifi_putest_dl_fw_buff: malloc fail\n"); + return -ENOMEM; + } + + /* Get the f/w image */ + fw_user_ptr = ((unsigned char*)arg) + sizeof(unifi_putest_command_t) + sizeof(unsigned int); + if (copy_from_user(fw_buf, (void*)fw_user_ptr, fw_length)) { + unifi_error(priv, "unifi_putest_dl_fw_buff: Failed to get the buffer\n"); + kfree(fw_buf); + return -EFAULT; + } + + /* Save the existing f/w to a temp, we need to restore it later */ + temp_fw_sta = priv->fw_sta; + + /* Setting fw_desc NULL indicates to the core that no f/w file was loaded + * via the kernel request_firmware() mechanism. This indicates to the core + * that it shouldn't call release_firmware() after the download is done. + */ + priv->fw_sta.fw_desc = NULL; /* No OS f/w resource */ + priv->fw_sta.dl_data = fw_buf; + priv->fw_sta.dl_len = fw_length; + + /* Application may have stopped the XAPs, but they are needed for reset */ + CsrSdioClaim(priv->sdio); + csrResult = unifi_start_processors(priv->card); + CsrSdioRelease(priv->sdio); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, "Failed to start XAPs. Hard reset required.\n"); + } + + /* Download the f/w. On UF6xxx this will cause the f/w file to convert + * into patch format and download via the ROM boot loader + */ + CsrSdioClaim(priv->sdio); + csrResult = unifi_download(priv->card, 0x0c00); + CsrSdioRelease(priv->sdio); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, + "unifi_putest_dl_fw_buff: failed to download the f/w\n"); + goto free_fw; + } + +free_fw: + /* Finished with the putest f/w, so restore the station f/w */ + priv->fw_sta = temp_fw_sta; + kfree(fw_buf); + + return CsrHipResultToStatus(csrResult); +} + + +int unifi_putest_coredump_prepare(unifi_priv_t *priv, unsigned char *arg) +{ + u16 data_u16; + s32 i; + CsrResult r; + + unifi_info(priv, "Preparing for SDIO coredump\n"); +#if defined (CSR_WIFI_HIP_DEBUG_OFFLINE) + unifi_debug_buf_dump(); +#endif + + /* Sanity check that userspace hasn't called a PUTEST_START, because that + * would have reset UniFi, potentially power cycling it and losing context + */ + if (priv->ptest_mode) { + unifi_error(priv, "PUTEST_START shouldn't be used before a coredump\n"); + } + + /* Flag that the userspace has requested coredump. Even if this preparation + * fails, the SME will call PUTEST_STOP to tidy up. + */ + priv->coredump_mode = 1; + + for (i = 0; i < 3; i++) { + CsrSdioClaim(priv->sdio); + r = CsrSdioRead16(priv->sdio, CHIP_HELPER_UNIFI_GBL_CHIP_VERSION*2, &data_u16); + CsrSdioRelease(priv->sdio); + if (r != CSR_RESULT_SUCCESS) { + unifi_info(priv, "Failed to read chip version! Try %d\n", i); + + /* First try, re-enable function which may have been disabled by f/w panic */ + if (i == 0) { + unifi_info(priv, "Try function enable\n"); + CsrSdioClaim(priv->sdio); + r = CsrSdioFunctionEnable(priv->sdio); + CsrSdioRelease(priv->sdio); + if (r != CSR_RESULT_SUCCESS) { + unifi_error(priv, "CsrSdioFunctionEnable failed %d\n", r); + } + continue; + } + + /* Subsequent tries, reset */ + + /* Set clock speed low */ + CsrSdioClaim(priv->sdio); + r = CsrSdioMaxBusClockFrequencySet(priv->sdio, UNIFI_SDIO_CLOCK_SAFE_HZ); + CsrSdioRelease(priv->sdio); + if (r != CSR_RESULT_SUCCESS) { + unifi_error(priv, "CsrSdioMaxBusClockFrequencySet() failed %d\n", r); + } + + /* Card software reset */ + CsrSdioClaim(priv->sdio); + r = unifi_card_hard_reset(priv->card); + CsrSdioRelease(priv->sdio); + if (r != CSR_RESULT_SUCCESS) { + unifi_error(priv, "unifi_card_hard_reset() failed %d\n", r); + } + } else { + unifi_info(priv, "Read chip version of 0x%04x\n", data_u16); + break; + } + } + + if (r != CSR_RESULT_SUCCESS) { + unifi_error(priv, "Failed to prepare chip\n"); + return -EIO; + } + + /* Stop the XAPs for coredump. The PUTEST_STOP must be called, e.g. at + * Raw SDIO deinit, to resume them. + */ + CsrSdioClaim(priv->sdio); + r = unifi_card_stop_processor(priv->card, UNIFI_PROC_BOTH); + CsrSdioRelease(priv->sdio); + if (r != CSR_RESULT_SUCCESS) { + unifi_error(priv, "Failed to stop processors\n"); + } + + return 0; +} + +int unifi_putest_cmd52_block_read(unifi_priv_t *priv, unsigned char *arg) +{ + struct unifi_putest_block_cmd52_r block_cmd52; + u8 *arg_pos; + unsigned int cmd_param_size; + CsrResult r; + u8 *block_local_buffer; + + arg_pos = (u8*)(((unifi_putest_command_t*)arg) + 1); + if (get_user(cmd_param_size, (int*)arg_pos)) { + unifi_error(priv, + "cmd52r_block: Failed to get the argument\n"); + return -EFAULT; + } + + if (cmd_param_size != sizeof(struct unifi_putest_block_cmd52_r)) { + unifi_error(priv, + "cmd52r_block: cmd52 struct mismatch\n"); + return -EINVAL; + } + + arg_pos += sizeof(unsigned int); + if (copy_from_user(&block_cmd52, + (void*)arg_pos, + sizeof(struct unifi_putest_block_cmd52_r))) { + unifi_error(priv, + "cmd52r_block: Failed to get the cmd52 params\n"); + return -EFAULT; + } + + unifi_trace(priv, UDBG2, "cmd52r_block: func=%d addr=0x%x len=0x%x ", + block_cmd52.funcnum, block_cmd52.addr, block_cmd52.length); + + block_local_buffer = vmalloc(block_cmd52.length); + if (block_local_buffer == NULL) { + unifi_error(priv, "cmd52r_block: Failed to allocate buffer\n"); + return -ENOMEM; + } + + CsrSdioClaim(priv->sdio); + r = unifi_card_readn(priv->card, block_cmd52.addr, block_local_buffer, block_cmd52.length); + CsrSdioRelease(priv->sdio); + if (r != CSR_RESULT_SUCCESS) { + unifi_error(priv, "cmd52r_block: unifi_readn failed\n"); + return -EIO; + } + + if (copy_to_user((void*)block_cmd52.data, + block_local_buffer, + block_cmd52.length)) { + unifi_error(priv, + "cmd52r_block: Failed to return the data\n"); + return -EFAULT; + } + + return 0; +} |