diff options
Diffstat (limited to 'drivers/staging/csr/csr_wifi_hip_card_sdio.c')
| -rw-r--r-- | drivers/staging/csr/csr_wifi_hip_card_sdio.c | 4001 |
1 files changed, 0 insertions, 4001 deletions
diff --git a/drivers/staging/csr/csr_wifi_hip_card_sdio.c b/drivers/staging/csr/csr_wifi_hip_card_sdio.c deleted file mode 100644 index d5425325894c..000000000000 --- a/drivers/staging/csr/csr_wifi_hip_card_sdio.c +++ /dev/null @@ -1,4001 +0,0 @@ -/***************************************************************************** - - (c) Cambridge Silicon Radio Limited 2012 - All rights reserved and confidential information of CSR - - Refer to LICENSE.txt included with this source for details - on the license terms. - -*****************************************************************************/ - -/* - * --------------------------------------------------------------------------- - * FILE: csr_wifi_hip_card_sdio.c - * - * PURPOSE: Implementation of the Card API for SDIO. - * - * NOTES: - * CardInit() is called from the SDIO probe callback when a card is - * inserted. This performs the basic SDIO initialisation, enabling i/o - * etc. - * - * --------------------------------------------------------------------------- - */ -#include <linux/slab.h> -#include "csr_wifi_hip_unifi.h" -#include "csr_wifi_hip_conversions.h" -#include "csr_wifi_hip_unifiversion.h" -#include "csr_wifi_hip_card.h" -#include "csr_wifi_hip_card_sdio.h" -#include "csr_wifi_hip_chiphelper.h" - - -/* Time to wait between attempts to read MAILBOX0 */ -#define MAILBOX1_TIMEOUT 10 /* in millisecs */ -#define MAILBOX1_ATTEMPTS 200 /* 2 seconds */ - -#define MAILBOX2_TIMEOUT 5 /* in millisecs */ -#define MAILBOX2_ATTEMPTS 10 /* 50ms */ - -#define RESET_SETTLE_DELAY 25 /* in millisecs */ - -static CsrResult card_init_slots(card_t *card); -static CsrResult card_hw_init(card_t *card); -static CsrResult firmware_present_in_flash(card_t *card); -static void bootstrap_chip_hw(card_t *card); -static CsrResult unifi_reset_hardware(card_t *card); -static CsrResult unifi_hip_init(card_t *card); -static CsrResult card_access_panic(card_t *card); -static CsrResult unifi_read_chip_version(card_t *card); - -/* - * --------------------------------------------------------------------------- - * unifi_alloc_card - * - * Allocate and initialise the card context structure. - * - * Arguments: - * sdio Pointer to SDIO context pointer to pass to low - * level i/o functions. - * ospriv Pointer to O/S private struct to pass when calling - * callbacks to the higher level system. - * - * Returns: - * Pointer to card struct, which represents the driver context or - * NULL if the allocation failed. - * --------------------------------------------------------------------------- - */ -card_t* unifi_alloc_card(CsrSdioFunction *sdio, void *ospriv) -{ - card_t *card; - u32 i; - - - card = kzalloc(sizeof(card_t), GFP_KERNEL); - if (card == NULL) - { - return NULL; - } - - card->sdio_if = sdio; - card->ospriv = ospriv; - - card->unifi_interrupt_seq = 1; - - /* Make these invalid. */ - card->proc_select = (u32)(-1); - card->dmem_page = (u32)(-1); - card->pmem_page = (u32)(-1); - - card->bh_reason_host = 0; - card->bh_reason_unifi = 0; - - for (i = 0; i < sizeof(card->tx_q_paused_flag) / sizeof(card->tx_q_paused_flag[0]); i++) - { - card->tx_q_paused_flag[i] = 0; - } - card->memory_resources_allocated = 0; - - card->low_power_mode = UNIFI_LOW_POWER_DISABLED; - card->periodic_wake_mode = UNIFI_PERIODIC_WAKE_HOST_DISABLED; - - card->host_state = UNIFI_HOST_STATE_AWAKE; - card->intmode = CSR_WIFI_INTMODE_DEFAULT; - - /* - * Memory resources for buffers are allocated when the chip is initialised - * because we need configuration information from the firmware. - */ - - /* - * Initialise wait queues and lists - */ - card->fh_command_queue.q_body = card->fh_command_q_body; - card->fh_command_queue.q_length = UNIFI_SOFT_COMMAND_Q_LENGTH; - - for (i = 0; i < UNIFI_NO_OF_TX_QS; i++) - { - card->fh_traffic_queue[i].q_body = card->fh_traffic_q_body[i]; - card->fh_traffic_queue[i].q_length = UNIFI_SOFT_TRAFFIC_Q_LENGTH; - } - - - /* Initialise mini-coredump pointers in case no coredump buffers - * are requested by the OS layer. - */ - card->request_coredump_on_reset = 0; - card->dump_next_write = NULL; - card->dump_cur_read = NULL; - card->dump_buf = NULL; - -#ifdef UNIFI_DEBUG - /* Determine offset of LSB in pointer for later alignment sanity check. - * Synergy integer types have specific widths, which cause compiler - * warnings when casting pointer types, e.g. on 64-bit systems. - */ - { - u32 val = 0x01234567; - - if (*((u8 *)&val) == 0x01) - { - card->lsb = sizeof(void *) - 1; /* BE */ - } - else - { - card->lsb = 0; /* LE */ - } - } -#endif - return card; -} /* unifi_alloc_card() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_init_card - * - * Reset the hardware and perform HIP initialization - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * CsrResult code - * CSR_RESULT_SUCCESS if successful - * --------------------------------------------------------------------------- - */ -CsrResult unifi_init_card(card_t *card, s32 led_mask) -{ - CsrResult r; - - - if (card == NULL) - { - return CSR_WIFI_HIP_RESULT_INVALID_VALUE; - } - - r = unifi_init(card); - if (r != CSR_RESULT_SUCCESS) - { - return r; - } - - r = unifi_hip_init(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to start host protocol.\n"); - return r; - } - - return CSR_RESULT_SUCCESS; -} - - -/* - * --------------------------------------------------------------------------- - * unifi_init - * - * Init the hardware. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * CsrResult code - * CSR_RESULT_SUCCESS if successful - * --------------------------------------------------------------------------- - */ -CsrResult unifi_init(card_t *card) -{ - CsrResult r; - CsrResult csrResult; - - if (card == NULL) - { - return CSR_WIFI_HIP_RESULT_INVALID_VALUE; - } - - /* - * Disable the SDIO interrupts while initialising UniFi. - * Re-enable them when f/w is running. - */ - csrResult = CsrSdioInterruptDisable(card->sdio_if); - if (csrResult == CSR_SDIO_RESULT_NO_DEVICE) - { - return CSR_WIFI_HIP_RESULT_NO_DEVICE; - } - - /* - * UniFi's PLL may start with a slow clock (~ 1 MHz) so initially - * set the SDIO bus clock to a similar value or SDIO accesses may - * fail. - */ - csrResult = CsrSdioMaxBusClockFrequencySet(card->sdio_if, UNIFI_SDIO_CLOCK_SAFE_HZ); - if (csrResult != CSR_RESULT_SUCCESS) - { - r = ConvertCsrSdioToCsrHipResult(card, csrResult); - return r; - } - card->sdio_clock_speed = UNIFI_SDIO_CLOCK_SAFE_HZ; - - /* - * Reset UniFi. Note, this only resets the WLAN function part of the chip, - * the SDIO interface is not reset. - */ - unifi_trace(card->ospriv, UDBG1, "Resetting UniFi\n"); - r = unifi_reset_hardware(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to reset UniFi\n"); - return r; - } - - /* Reset the power save mode, to be active until the MLME-reset is complete */ - r = unifi_configure_low_power_mode(card, - UNIFI_LOW_POWER_DISABLED, UNIFI_PERIODIC_WAKE_HOST_DISABLED); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to set power save mode\n"); - return r; - } - - /* - * Set initial value of page registers. - * The page registers will be maintained by unifi_read...() and - * unifi_write...(). - */ - card->proc_select = (u32)(-1); - card->dmem_page = (u32)(-1); - card->pmem_page = (u32)(-1); - r = unifi_write_direct16(card, ChipHelper_HOST_WINDOW3_PAGE(card->helper) * 2, 0); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to write SHARED_DMEM_PAGE\n"); - return r; - } - r = unifi_write_direct16(card, ChipHelper_HOST_WINDOW2_PAGE(card->helper) * 2, 0); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to write PROG_MEM2_PAGE\n"); - return r; - } - - /* - * If the driver has reset UniFi due to previous SDIO failure, this may - * have been due to a chip watchdog reset. In this case, the driver may - * have requested a mini-coredump which needs to be captured now the - * SDIO interface is alive. - */ - (void)unifi_coredump_handle_request(card); - - /* - * Probe to see if the UniFi has ROM/flash to boot from. CSR6xxx should do. - */ - r = firmware_present_in_flash(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r == CSR_WIFI_HIP_RESULT_NOT_FOUND) - { - unifi_error(card->ospriv, "No firmware found\n"); - } - else if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Probe for Flash failed\n"); - } - - return r; -} /* unifi_init() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_download - * - * Load the firmware. - * - * Arguments: - * card Pointer to card struct - * led_mask Loader LED mask - * - * Returns: - * CSR_RESULT_SUCCESS on success - * CsrResult error code on failure. - * --------------------------------------------------------------------------- - */ -CsrResult unifi_download(card_t *card, s32 led_mask) -{ - CsrResult r; - void *dlpriv; - - if (card == NULL) - { - return CSR_WIFI_HIP_RESULT_INVALID_VALUE; - } - - /* Set the loader led mask */ - card->loader_led_mask = led_mask; - - /* Get the firmware file information */ - unifi_trace(card->ospriv, UDBG1, "downloading firmware...\n"); - - dlpriv = unifi_dl_fw_read_start(card, UNIFI_FW_STA); - if (dlpriv == NULL) - { - return CSR_WIFI_HIP_RESULT_NOT_FOUND; - } - - /* Download the firmware. */ - r = unifi_dl_firmware(card, dlpriv); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to download firmware\n"); - return r; - } - - /* Free the firmware file information. */ - unifi_fw_read_stop(card->ospriv, dlpriv); - - return CSR_RESULT_SUCCESS; -} /* unifi_download() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_hip_init - * - * This function performs the f/w initialisation sequence as described - * in the Unifi Host Interface Protocol Specification. - * It allocates memory for host-side slot data and signal queues. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * CSR_RESULT_SUCCESS on success or else a CSR error code - * - * Notes: - * The firmware must have been downloaded. - * --------------------------------------------------------------------------- - */ -static CsrResult unifi_hip_init(card_t *card) -{ - CsrResult r; - CsrResult csrResult; - - r = card_hw_init(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to establish communication with UniFi\n"); - return r; - } -#ifdef CSR_PRE_ALLOC_NET_DATA - /* if there is any preallocated netdata left from the prev session free it now */ - prealloc_netdata_free(card); -#endif - /* - * Allocate memory for host-side slot data and signal queues. - * We need the config info read from the firmware to know how much - * memory to allocate. - */ - r = card_init_slots(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Init slots failed: %d\n", r); - return r; - } - - unifi_trace(card->ospriv, UDBG2, "Sending first UniFi interrupt\n"); - - r = unifi_set_host_state(card, UNIFI_HOST_STATE_AWAKE); - if (r != CSR_RESULT_SUCCESS) - { - return r; - } - - /* Enable the SDIO interrupts now that the f/w is running. */ - csrResult = CsrSdioInterruptEnable(card->sdio_if); - if (csrResult == CSR_SDIO_RESULT_NO_DEVICE) - { - return CSR_WIFI_HIP_RESULT_NO_DEVICE; - } - - /* Signal the UniFi to start handling messages */ - r = CardGenInt(card); - if (r != CSR_RESULT_SUCCESS) - { - return r; - } - - return CSR_RESULT_SUCCESS; -} /* unifi_hip_init() */ - - -/* - * --------------------------------------------------------------------------- - * _build_sdio_config_data - * - * Unpack the SDIO configuration information from a buffer read from - * UniFi into a host structure. - * The data is byte-swapped for a big-endian host if necessary by the - * UNPACK... macros. - * - * Arguments: - * card Pointer to card struct - * cfg_data Destination structure to unpack into. - * cfg_data_buf Source buffer to read from. This should be the raw - * data read from UniFi. - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -static void _build_sdio_config_data(sdio_config_data_t *cfg_data, - const u8 *cfg_data_buf) -{ - s16 offset = 0; - - cfg_data->version = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->sdio_ctrl_offset = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->fromhost_sigbuf_handle = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->tohost_sigbuf_handle = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->num_fromhost_sig_frags = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->num_tohost_sig_frags = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->num_fromhost_data_slots = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->num_tohost_data_slots = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->data_slot_size = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->initialised = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->overlay_size = CSR_GET_UINT32_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT32; - - cfg_data->data_slot_round = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->sig_frag_size = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); - offset += SIZEOF_UINT16; - - cfg_data->tohost_signal_padding = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(cfg_data_buf + offset); -} /* _build_sdio_config_data() */ - - -/* - * - Function ---------------------------------------------------------------- - * card_hw_init() - * - * Perform the initialisation procedure described in the UniFi Host - * Interface Protocol document (section 3.3.8) and read the run-time - * configuration information from the UniFi. This is stuff like number - * of bulk data slots etc. - * - * The card enumeration and SD initialisation has already been done by - * the SDIO library, see card_sdio_init(). - * - * The initialisation is done when firmware is ready, i.e. this may need - * to be called after a f/w download operation. - * - * The initialisation procedure goes like this: - * - Wait for UniFi to start-up by polling SHARED_MAILBOX1 - * - Find the symbol table and look up SLT_SDIO_SLOT_CONFIG - * - Read the config structure - * - Check the "SDIO initialised" flag, if not zero do a h/w reset and - * start again - * - Decide the number of bulk data slots to allocate, allocate them and - * set "SDIO initialised" flag (and generate an interrupt) to say so. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * CSR_RESULT_SUCEESS on success, - * a CSR error code on failure - * - * Notes: - * All data in the f/w is stored in a little endian format, without any - * padding bytes. Every read from this memory has to be transformed in - * host (cpu specific) format, before it is stored in driver's parameters - * or/and structures. Athough unifi_card_read16() and unifi_read32() do perform - * the conversion internally, unifi_readn() does not. - * --------------------------------------------------------------------------- - */ -static CsrResult card_hw_init(card_t *card) -{ - u32 slut_address; - u16 initialised; - u16 finger_print; - symbol_t slut; - sdio_config_data_t *cfg_data; - u8 cfg_data_buf[SDIO_CONFIG_DATA_SIZE]; - CsrResult r; - void *dlpriv; - s16 major, minor; - s16 search_4slut_again; - CsrResult csrResult; - - /* - * The device revision from the TPLMID_MANF and TPLMID_CARD fields - * of the CIS are available as - * card->sdio_if->pDevice->ManfID - * card->sdio_if->pDevice->AppID - */ - - /* - * Run in a loop so we can patch. - */ - do - { - /* Reset these each time around the loop. */ - search_4slut_again = 0; - cfg_data = NULL; - - r = card_wait_for_firmware_to_start(card, &slut_address); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Firmware hasn't started\n"); - return r; - } - unifi_trace(card->ospriv, UDBG4, "SLUT addr 0x%lX\n", slut_address); - - /* - * Firmware has started, but doesn't know full clock configuration yet - * as some of the information may be in the MIB. Therefore we set an - * initial SDIO clock speed, faster than UNIFI_SDIO_CLOCK_SAFE_HZ, for - * the patch download and subsequent firmware initialisation, and - * full speed UNIFI_SDIO_CLOCK_MAX_HZ will be set once the f/w tells us - * that it is ready. - */ - csrResult = CsrSdioMaxBusClockFrequencySet(card->sdio_if, UNIFI_SDIO_CLOCK_INIT_HZ); - if (csrResult != CSR_RESULT_SUCCESS) - { - r = ConvertCsrSdioToCsrHipResult(card, csrResult); - return r; - } - card->sdio_clock_speed = UNIFI_SDIO_CLOCK_INIT_HZ; - - /* - * Check the SLUT fingerprint. - * The slut_address is a generic pointer so we must use unifi_card_read16(). - */ - unifi_trace(card->ospriv, UDBG4, "Looking for SLUT finger print\n"); - finger_print = 0; - r = unifi_card_read16(card, slut_address, &finger_print); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to read SLUT finger print\n"); - return r; - } - - if (finger_print != SLUT_FINGERPRINT) - { - unifi_error(card->ospriv, "Failed to find Symbol lookup table fingerprint\n"); - return CSR_RESULT_FAILURE; - } - - /* Symbol table starts imedately after the fingerprint */ - slut_address += 2; - - /* Search the table until either the end marker is found, or the - * loading of patch firmware invalidates the current table. - */ - while (!search_4slut_again) - { - u16 s; - u32 l; - - r = unifi_card_read16(card, slut_address, &s); - if (r != CSR_RESULT_SUCCESS) - { - return r; - } - slut_address += 2; - - if (s == CSR_SLT_END) - { - unifi_trace(card->ospriv, UDBG3, " found CSR_SLT_END\n"); - break; - } - - r = unifi_read32(card, slut_address, &l); - if (r != CSR_RESULT_SUCCESS) - { - return r; - } - slut_address += 4; - - slut.id = s; - slut.obj = l; - - unifi_trace(card->ospriv, UDBG3, " found SLUT id %02d.%08lx\n", slut.id, slut.obj); - switch (slut.id) - { - case CSR_SLT_SDIO_SLOT_CONFIG: - cfg_data = &card->config_data; - /* - * unifi_card_readn reads n bytes from the card, where data is stored - * in a little endian format, without any padding bytes. So, we - * can not just pass the cfg_data pointer or use the - * sizeof(sdio_config_data_t) since the structure in the host can - * be big endian formatted or have padding bytes for alignment. - * We use a char buffer to read the data from the card. - */ - r = unifi_card_readn(card, slut.obj, cfg_data_buf, SDIO_CONFIG_DATA_SIZE); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to read config data\n"); - return r; - } - /* .. and then we copy the data to the host structure */ - _build_sdio_config_data(cfg_data, cfg_data_buf); - - /* Make sure the from host data slots are what we expect - we reserve 2 for commands and there should be at least - 1 left for each access category */ - if ((cfg_data->num_fromhost_data_slots < UNIFI_RESERVED_COMMAND_SLOTS) - || (cfg_data->num_fromhost_data_slots - UNIFI_RESERVED_COMMAND_SLOTS) / UNIFI_NO_OF_TX_QS == 0) - { - unifi_error(card->ospriv, "From host data slots %d\n", cfg_data->num_fromhost_data_slots); - unifi_error(card->ospriv, "need to be (queues * x + 2) (UNIFI_RESERVED_COMMAND_SLOTS for commands)\n"); - return CSR_RESULT_FAILURE; - } - - /* Configure SDIO to-block-size padding */ - if (card->sdio_io_block_pad) - { - /* - * Firmware limits the maximum padding size via data_slot_round. - * Therefore when padding to whole block sizes, the block size - * must be configured correctly by adjusting CSR_WIFI_HIP_SDIO_BLOCK_SIZE. - */ - if (cfg_data->data_slot_round < card->sdio_io_block_size) - { - unifi_error(card->ospriv, - "Configuration error: Block size of %d exceeds f/w data_slot_round of %d\n", - card->sdio_io_block_size, cfg_data->data_slot_round); - return CSR_WIFI_HIP_RESULT_INVALID_VALUE; - } - - /* - * To force the To-Host signals to be rounded up to the SDIO block - * size, we need to write the To-Host Signal Padding Fragments - * field of the SDIO configuration in UniFi. - */ - if ((card->sdio_io_block_size % cfg_data->sig_frag_size) != 0) - { - unifi_error(card->ospriv, "Configuration error: Can not pad to-host signals.\n"); - return CSR_WIFI_HIP_RESULT_INVALID_VALUE; - } - cfg_data->tohost_signal_padding = (u16) (card->sdio_io_block_size / cfg_data->sig_frag_size); - unifi_info(card->ospriv, "SDIO block size %d requires %d padding chunks\n", - card->sdio_io_block_size, cfg_data->tohost_signal_padding); - r = unifi_card_write16(card, slut.obj + SDIO_TO_HOST_SIG_PADDING_OFFSET, cfg_data->tohost_signal_padding); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to write To-Host Signal Padding Fragments\n"); - return r; - } - } - - /* Reconstruct the Generic Pointer address of the - * SDIO Control Data Struct. - */ - card->sdio_ctrl_addr = cfg_data->sdio_ctrl_offset | (UNIFI_SH_DMEM << 24); - card->init_flag_addr = slut.obj + SDIO_INIT_FLAG_OFFSET; - break; - - case CSR_SLT_BUILD_ID_NUMBER: - { - u32 n; - r = unifi_read32(card, slut.obj, &n); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to read build id\n"); - return r; - } - card->build_id = n; - } - break; - - case CSR_SLT_BUILD_ID_STRING: - r = unifi_readnz(card, slut.obj, card->build_id_string, - sizeof(card->build_id_string)); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to read build string\n"); - return r; - } - break; - - case CSR_SLT_PERSISTENT_STORE_DB: - break; - - case CSR_SLT_BOOT_LOADER_CONTROL: - - /* This command copies most of the station firmware - * image from ROM into program RAM. It also clears - * out the zerod data and sets up the initialised - * data. */ - r = unifi_do_loader_op(card, slut.obj + 6, UNIFI_BOOT_LOADER_LOAD_STA); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to write loader load image command\n"); - return r; - } - - dlpriv = unifi_dl_fw_read_start(card, UNIFI_FW_STA); - - /* dlpriv might be NULL, we still need to do the do_loader_op step. */ - if (dlpriv != NULL) - { - /* Download the firmware. */ - r = unifi_dl_patch(card, dlpriv, slut.obj); - - /* Free the firmware file information. */ - unifi_fw_read_stop(card->ospriv, dlpriv); - - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to patch firmware\n"); - return r; - } - } - - /* This command starts the firmware image that we want (the - * station by default) with any patches required applied. */ - r = unifi_do_loader_op(card, slut.obj + 6, UNIFI_BOOT_LOADER_RESTART); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to write loader restart command\n"); - return r; - } - - /* The now running patch f/w defines a new SLUT data structure - - * the current one is no longer valid. We must drop out of the - * processing loop and enumerate the new SLUT (which may appear - * at a different offset). - */ - search_4slut_again = 1; - break; - - case CSR_SLT_PANIC_DATA_PHY: - card->panic_data_phy_addr = slut.obj; - break; - - case CSR_SLT_PANIC_DATA_MAC: - card->panic_data_mac_addr = slut.obj; - break; - - default: - /* do nothing */ - break; - } - } /* while */ - } while (search_4slut_again); - - /* Did we find the Config Data ? */ - if (cfg_data == NULL) - { - unifi_error(card->ospriv, "Failed to find SDIO_SLOT_CONFIG Symbol\n"); - return CSR_RESULT_FAILURE; - } - - /* - * Has ths card already been initialised? - * If so, return an error so we do a h/w reset and start again. - */ - r = unifi_card_read16(card, card->init_flag_addr, &initialised); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to read init flag at %08lx\n", - card->init_flag_addr); - return r; - } - if (initialised != 0) - { - return CSR_RESULT_FAILURE; - } - - - /* - * Now check the UniFi firmware version - */ - major = (cfg_data->version >> 8) & 0xFF; - minor = cfg_data->version & 0xFF; - unifi_info(card->ospriv, "UniFi f/w protocol version %d.%d (driver %d.%d)\n", - major, minor, - UNIFI_HIP_MAJOR_VERSION, UNIFI_HIP_MINOR_VERSION); - - unifi_info(card->ospriv, "Firmware build %u: %s\n", - card->build_id, card->build_id_string); - - if (major != UNIFI_HIP_MAJOR_VERSION) - { - unifi_error(card->ospriv, "UniFi f/w protocol major version (%d) is different from driver (v%d.%d)\n", - major, UNIFI_HIP_MAJOR_VERSION, UNIFI_HIP_MINOR_VERSION); -#ifndef CSR_WIFI_DISABLE_HIP_VERSION_CHECK - return CSR_RESULT_FAILURE; -#endif - } - if (minor < UNIFI_HIP_MINOR_VERSION) - { - unifi_error(card->ospriv, "UniFi f/w protocol version (v%d.%d) is older than minimum required by driver (v%d.%d).\n", - major, minor, - UNIFI_HIP_MAJOR_VERSION, UNIFI_HIP_MINOR_VERSION); -#ifndef CSR_WIFI_DISABLE_HIP_VERSION_CHECK - return CSR_RESULT_FAILURE; -#endif - } - - /* Read panic codes from a previous firmware panic. If the firmware has - * not panicked since power was applied (e.g. power-off hard reset) - * the stored panic codes will not be updated. - */ - unifi_read_panic(card); - - return CSR_RESULT_SUCCESS; -} /* card_hw_init() */ - - -/* - * --------------------------------------------------------------------------- - * card_wait_for_unifi_to_reset - * - * Waits for a reset to complete by polling the WLAN function enable - * bit (which is cleared on reset). - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * CSR_RESULT_SUCCESS on success, CSR error code on failure. - * --------------------------------------------------------------------------- - */ -static CsrResult card_wait_for_unifi_to_reset(card_t *card) -{ - s16 i; - CsrResult r; - u8 io_enable; - CsrResult csrResult; - - r = CSR_RESULT_SUCCESS; - for (i = 0; i < MAILBOX2_ATTEMPTS; i++) - { - unifi_trace(card->ospriv, UDBG1, "waiting for reset to complete, attempt %d\n", i); - if (card->chip_id > SDIO_CARD_ID_UNIFI_2) - { - /* It's quite likely that this read will timeout for the - * first few tries - especially if we have reset via - * DBG_RESET. - */ -#if defined (CSR_WIFI_HIP_DEBUG_OFFLINE) && defined (CSR_WIFI_HIP_SDIO_TRACE) - unifi_debug_log_to_buf("m0@%02X=", SDIO_IO_READY); -#endif - csrResult = CsrSdioF0Read8(card->sdio_if, SDIO_IO_READY, &io_enable); -#if defined (CSR_WIFI_HIP_DEBUG_OFFLINE) && defined (CSR_WIFI_HIP_SDIO_TRACE) - if (csrResult != CSR_RESULT_SUCCESS) - { - unifi_debug_log_to_buf("error=%X\n", csrResult); - } - else - { - unifi_debug_log_to_buf("%X\n", io_enable); - } -#endif - if (csrResult == CSR_SDIO_RESULT_NO_DEVICE) - { - return CSR_WIFI_HIP_RESULT_NO_DEVICE; - } - r = CSR_RESULT_SUCCESS; - if (csrResult != CSR_RESULT_SUCCESS) - { - r = ConvertCsrSdioToCsrHipResult(card, csrResult); - } - } - else - { - r = sdio_read_f0(card, SDIO_IO_ENABLE, &io_enable); - } - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r == CSR_RESULT_SUCCESS) - { - u16 mbox2; - s16 enabled = io_enable & (1 << card->function); - - if (!enabled) - { - unifi_trace(card->ospriv, UDBG1, - "Reset complete (function %d is disabled) in ~ %u msecs\n", - card->function, i * MAILBOX2_TIMEOUT); - - /* Enable WLAN function and verify MAILBOX2 is zero'd */ - csrResult = CsrSdioFunctionEnable(card->sdio_if); - if (csrResult != CSR_RESULT_SUCCESS) - { - r = ConvertCsrSdioToCsrHipResult(card, csrResult); - unifi_error(card->ospriv, "CsrSdioFunctionEnable failed %d\n", r); - break; - } - } - - r = unifi_read_direct16(card, ChipHelper_SDIO_HIP_HANDSHAKE(card->helper) * 2, &mbox2); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "read HIP_HANDSHAKE failed %d\n", r); - break; - } - if (mbox2 != 0) - { - unifi_error(card->ospriv, "MAILBOX2 non-zero after reset (mbox2 = %04x)\n", mbox2); - r = CSR_RESULT_FAILURE; - } - break; - } - else - { - if (card->chip_id > SDIO_CARD_ID_UNIFI_2) - { - /* We ignore read failures for the first few reads, - * they are probably benign. */ - if (i > MAILBOX2_ATTEMPTS / 4) - { - unifi_trace(card->ospriv, UDBG1, "Failed to read CCCR IO Ready register while polling for reset\n"); - } - } - else - { - unifi_trace(card->ospriv, UDBG1, "Failed to read CCCR IO Enable register while polling for reset\n"); - } - } - CsrThreadSleep(MAILBOX2_TIMEOUT); - } - - if (r == CSR_RESULT_SUCCESS && i == MAILBOX2_ATTEMPTS) - { - unifi_trace(card->ospriv, UDBG1, "Timeout waiting for UniFi to complete reset\n"); - r = CSR_RESULT_FAILURE; - } - - return r; -} /* card_wait_for_unifi_to_reset() */ - - -/* - * --------------------------------------------------------------------------- - * card_wait_for_unifi_to_disable - * - * Waits for the function to become disabled by polling the - * IO_READY bit. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * CSR_RESULT_SUCCESS on success, CSR error code on failure. - * - * Notes: This function can only be used with - * card->chip_id > SDIO_CARD_ID_UNIFI_2 - * --------------------------------------------------------------------------- - */ -static CsrResult card_wait_for_unifi_to_disable(card_t *card) -{ - s16 i; - CsrResult r; - u8 io_enable; - CsrResult csrResult; - - if (card->chip_id <= SDIO_CARD_ID_UNIFI_2) - { - unifi_error(card->ospriv, - "Function reset method not supported for chip_id=%d\n", - card->chip_id); - return CSR_RESULT_FAILURE; - } - - r = CSR_RESULT_SUCCESS; - for (i = 0; i < MAILBOX2_ATTEMPTS; i++) - { - unifi_trace(card->ospriv, UDBG1, "waiting for disable to complete, attempt %d\n", i); - - /* - * It's quite likely that this read will timeout for the - * first few tries - especially if we have reset via - * DBG_RESET. - */ -#if defined (CSR_WIFI_HIP_DEBUG_OFFLINE) && defined (CSR_WIFI_HIP_SDIO_TRACE) - unifi_debug_log_to_buf("r0@%02X=", SDIO_IO_READY); -#endif - csrResult = CsrSdioF0Read8(card->sdio_if, SDIO_IO_READY, &io_enable); -#if defined (CSR_WIFI_HIP_DEBUG_OFFLINE) && defined (CSR_WIFI_HIP_SDIO_TRACE) - if (csrResult != CSR_RESULT_SUCCESS) - { - unifi_debug_log_to_buf("error=%X\n", csrResult); - } - else - { - unifi_debug_log_to_buf("%X\n", io_enable); - } -#endif - if (csrResult == CSR_SDIO_RESULT_NO_DEVICE) - { - return CSR_WIFI_HIP_RESULT_NO_DEVICE; - } - if (csrResult == CSR_RESULT_SUCCESS) - { - s16 enabled = io_enable & (1 << card->function); - r = CSR_RESULT_SUCCESS; - if (!enabled) - { - unifi_trace(card->ospriv, UDBG1, - "Disable complete (function %d is disabled) in ~ %u msecs\n", - card->function, i * MAILBOX2_TIMEOUT); - - break; - } - } - else - { - /* - * We ignore read failures for the first few reads, - * they are probably benign. - */ - r = ConvertCsrSdioToCsrHipResult(card, csrResult); - if (i > (MAILBOX2_ATTEMPTS / 4)) - { - unifi_trace(card->ospriv, UDBG1, - "Failed to read CCCR IO Ready register while polling for disable\n"); - } - } - CsrThreadSleep(MAILBOX2_TIMEOUT); - } - - if ((r == CSR_RESULT_SUCCESS) && (i == MAILBOX2_ATTEMPTS)) - { - unifi_trace(card->ospriv, UDBG1, "Timeout waiting for UniFi to complete disable\n"); - r = CSR_RESULT_FAILURE; - } - - return r; -} /* card_wait_for_unifi_to_reset() */ - - -/* - * --------------------------------------------------------------------------- - * card_wait_for_firmware_to_start - * - * Polls the MAILBOX1 register for a non-zero value. - * Then reads MAILBOX0 and forms the two values into a 32-bit address - * which is returned to the caller. - * - * Arguments: - * card Pointer to card struct - * paddr Pointer to receive the UniFi address formed - * by concatenating MAILBOX1 and MAILBOX0. - * - * Returns: - * CSR_RESULT_SUCCESS on success, CSR error code on failure. - * --------------------------------------------------------------------------- - */ -CsrResult card_wait_for_firmware_to_start(card_t *card, u32 *paddr) -{ - s32 i; - u16 mbox0, mbox1; - CsrResult r; - - /* - * Wait for UniFi to initialise its data structures by polling - * the SHARED_MAILBOX1 register. - * Experience shows this is typically 120ms. - */ - CsrThreadSleep(MAILBOX1_TIMEOUT); - - mbox1 = 0; - unifi_trace(card->ospriv, UDBG1, "waiting for MAILBOX1 to be non-zero...\n"); - for (i = 0; i < MAILBOX1_ATTEMPTS; i++) - { - r = unifi_read_direct16(card, ChipHelper_MAILBOX1(card->helper) * 2, &mbox1); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - /* These reads can fail if UniFi isn't up yet, so try again */ - unifi_warning(card->ospriv, "Failed to read UniFi Mailbox1 register\n"); - } - - if ((r == CSR_RESULT_SUCCESS) && (mbox1 != 0)) - { - unifi_trace(card->ospriv, UDBG1, "MAILBOX1 ready (0x%04X) in %u millisecs\n", - mbox1, i * MAILBOX1_TIMEOUT); - - /* Read the MAILBOX1 again in case we caught the value as it - * changed. */ - r = unifi_read_direct16(card, ChipHelper_MAILBOX1(card->helper) * 2, &mbox1); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to read UniFi Mailbox1 register for second time\n"); - return r; - } - unifi_trace(card->ospriv, UDBG1, "MAILBOX1 value=0x%04X\n", mbox1); - - break; - } - - CsrThreadSleep(MAILBOX1_TIMEOUT); - if ((i % 100) == 99) - { - unifi_trace(card->ospriv, UDBG2, "MAILBOX1 not ready (0x%X), still trying...\n", mbox1); - } - } - - if ((r == CSR_RESULT_SUCCESS) && (mbox1 == 0)) - { - unifi_trace(card->ospriv, UDBG1, "Timeout waiting for firmware to start, Mailbox1 still 0 after %d ms\n", - MAILBOX1_ATTEMPTS * MAILBOX1_TIMEOUT); - return CSR_RESULT_FAILURE; - } - - - /* - * Complete the reset handshake by setting MAILBOX2 to 0xFFFF - */ - r = unifi_write_direct16(card, ChipHelper_SDIO_HIP_HANDSHAKE(card->helper) * 2, 0xFFFF); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to write f/w startup handshake to MAILBOX2\n"); - return r; - } - - - /* - * Read the Symbol Look Up Table (SLUT) offset. - * Top 16 bits are in mbox1, read the lower 16 bits from mbox0. - */ - mbox0 = 0; - r = unifi_read_direct16(card, ChipHelper_MAILBOX0(card->helper) * 2, &mbox0); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to read UniFi Mailbox0 register\n"); - return r; - } - - *paddr = (((u32)mbox1 << 16) | mbox0); - - return CSR_RESULT_SUCCESS; -} /* card_wait_for_firmware_to_start() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_capture_panic - * - * Attempt to capture panic codes from the firmware. This may involve - * warm reset of the chip to regain access following a watchdog reset. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * CSR_RESULT_SUCCESS if panic codes were captured, or none available - * CSR_RESULT_FAILURE if the driver could not access function 1 - * --------------------------------------------------------------------------- - */ -CsrResult unifi_capture_panic(card_t *card) -{ - - /* The firmware must have previously initialised to read the panic addresses - * from the SLUT - */ - if (!card->panic_data_phy_addr || !card->panic_data_mac_addr) - { - return CSR_RESULT_SUCCESS; - } - - /* Ensure we can access function 1 following a panic/watchdog reset */ - if (card_access_panic(card) == CSR_RESULT_SUCCESS) - { - /* Read the panic codes */ - unifi_read_panic(card); - } - else - { - unifi_info(card->ospriv, "Unable to read panic codes"); - } - - return CSR_RESULT_SUCCESS; -} - - -/* - * --------------------------------------------------------------------------- - * card_access_panic - * Attempt to read the WLAN SDIO function in order to read panic codes - * and perform various reset steps to regain access if the read fails. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * CSR_RESULT_SUCCESS if panic codes can be read - * CSR error code if panic codes can not be read - * --------------------------------------------------------------------------- - */ -static CsrResult card_access_panic(card_t *card) -{ - u16 data_u16 = 0; - s32 i; - CsrResult r, sr; - - /* A chip version of zero means that the version never got successfully read - * during reset. In this case give up because it will not be possible to - * verify the chip version. - */ - if (!card->chip_version) - { - unifi_info(card->ospriv, "Unknown chip version\n"); - return CSR_RESULT_FAILURE; - } - - /* Ensure chip is awake or access to function 1 will fail */ - r = unifi_set_host_state(card, UNIFI_HOST_STATE_AWAKE); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "unifi_set_host_state() failed %d\n", r); - return CSR_RESULT_FAILURE; /* Card is probably unpowered */ - } - CsrThreadSleep(20); - - for (i = 0; i < 3; i++) - { - sr = CsrSdioRead16(card->sdio_if, CHIP_HELPER_UNIFI_GBL_CHIP_VERSION * 2, &data_u16); - if (sr != CSR_RESULT_SUCCESS || data_u16 != card->chip_version) - { - unifi_info(card->ospriv, "Failed to read valid chip version sr=%d (0x%04x want 0x%04x) try %d\n", - sr, data_u16, card->chip_version, i); - - /* Set clock speed low */ - sr = CsrSdioMaxBusClockFrequencySet(card->sdio_if, UNIFI_SDIO_CLOCK_SAFE_HZ); - if (sr != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "CsrSdioMaxBusClockFrequencySet() failed1 %d\n", sr); - r = ConvertCsrSdioToCsrHipResult(card, sr); - } - card->sdio_clock_speed = UNIFI_SDIO_CLOCK_SAFE_HZ; - - /* First try re-enabling function in case a f/w watchdog reset disabled it */ - if (i == 0) - { - unifi_info(card->ospriv, "Try function enable\n"); - sr = CsrSdioFunctionEnable(card->sdio_if); - if (sr != CSR_RESULT_SUCCESS) - { - r = ConvertCsrSdioToCsrHipResult(card, sr); - unifi_error(card->ospriv, "CsrSdioFunctionEnable failed %d (HIP %d)\n", sr, r); - } - continue; - } - - /* Second try, set awake */ - unifi_info(card->ospriv, "Try set awake\n"); - - /* Ensure chip is awake */ - r = unifi_set_host_state(card, UNIFI_HOST_STATE_AWAKE); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "unifi_set_host_state() failed2 %d\n", r); - } - - /* Set clock speed low in case setting the host state raised it, which - * would only happen if host state was previously TORPID - */ - sr = CsrSdioMaxBusClockFrequencySet(card->sdio_if, UNIFI_SDIO_CLOCK_SAFE_HZ); - if (sr != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "CsrSdioMaxBusClockFrequencySet() failed2 %d\n", sr); - } - card->sdio_clock_speed = UNIFI_SDIO_CLOCK_SAFE_HZ; - - if (i == 1) - { - continue; - } - - /* Perform a s/w reset to preserve as much as the card state as possible, - * (mainly the preserve RAM). The context will be lost for coredump - but as we - * were unable to access the WLAN function for panic, the coredump would have - * also failed without a reset. - */ - unifi_info(card->ospriv, "Try s/w reset\n"); - - r = unifi_card_hard_reset(card); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "unifi_card_hard_reset() failed %d\n", r); - } - } - else - { - if (i > 0) - { - unifi_info(card->ospriv, "Read chip version 0x%x after %d retries\n", data_u16, i); - } - break; - } - } - - r = ConvertCsrSdioToCsrHipResult(card, sr); - return r; -} - - -/* - * --------------------------------------------------------------------------- - * unifi_read_panic - * Reads, saves and prints panic codes stored by the firmware in UniFi's - * preserve RAM by the last panic that occurred since chip was powered. - * Nothing is saved if the panic codes are read as zero. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * --------------------------------------------------------------------------- - */ -void unifi_read_panic(card_t *card) -{ - CsrResult r; - u16 p_code, p_arg; - - /* The firmware must have previously initialised to read the panic addresses - * from the SLUT - */ - if (!card->panic_data_phy_addr || !card->panic_data_mac_addr) - { - return; - } - - /* Get the panic data from PHY */ - r = unifi_card_read16(card, card->panic_data_phy_addr, &p_code); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "capture_panic: unifi_read16 %08x failed %d\n", card->panic_data_phy_addr, r); - p_code = 0; - } - if (p_code) - { - r = unifi_card_read16(card, card->panic_data_phy_addr + 2, &p_arg); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "capture_panic: unifi_read16 %08x failed %d\n", card->panic_data_phy_addr + 2, r); - } - unifi_error(card->ospriv, "Last UniFi PHY PANIC %04x arg %04x\n", p_code, p_arg); - card->last_phy_panic_code = p_code; - card->last_phy_panic_arg = p_arg; - } - - /* Get the panic data from MAC */ - r = unifi_card_read16(card, card->panic_data_mac_addr, &p_code); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "capture_panic: unifi_read16 %08x failed %d\n", card->panic_data_mac_addr, r); - p_code = 0; - } - if (p_code) - { - r = unifi_card_read16(card, card->panic_data_mac_addr + 2, &p_arg); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "capture_panic: unifi_read16 %08x failed %d\n", card->panic_data_mac_addr + 2, r); - } - unifi_error(card->ospriv, "Last UniFi MAC PANIC %04x arg %04x\n", p_code, p_arg); - card->last_mac_panic_code = p_code; - card->last_mac_panic_arg = p_arg; - } - -} - - -/* - * --------------------------------------------------------------------------- - * card_allocate_memory_resources - * - * Allocates memory for the from-host, to-host bulk data slots, - * soft queue buffers and bulk data buffers. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * CSR_RESULT_SUCCESS on success, CSR error code on failure. - * --------------------------------------------------------------------------- - */ -static CsrResult card_allocate_memory_resources(card_t *card) -{ - s16 n, i, k, r; - sdio_config_data_t *cfg_data; - - /* Reset any state carried forward from a previous life */ - card->fh_command_queue.q_rd_ptr = 0; - card->fh_command_queue.q_wr_ptr = 0; - (void)scnprintf(card->fh_command_queue.name, UNIFI_QUEUE_NAME_MAX_LENGTH, - "fh_cmd_q"); - for (i = 0; i < UNIFI_NO_OF_TX_QS; i++) - { - card->fh_traffic_queue[i].q_rd_ptr = 0; - card->fh_traffic_queue[i].q_wr_ptr = 0; - (void)scnprintf(card->fh_traffic_queue[i].name, - UNIFI_QUEUE_NAME_MAX_LENGTH, "fh_data_q%d", i); - } -#ifndef CSR_WIFI_HIP_TA_DISABLE - unifi_ta_sampling_init(card); -#endif - /* Convenience short-cut */ - cfg_data = &card->config_data; - - /* - * Allocate memory for the from-host and to-host signal buffers. - */ - card->fh_buffer.buf = kmalloc(UNIFI_FH_BUF_SIZE, GFP_KERNEL); - if (card->fh_buffer.buf == NULL) - { - unifi_error(card->ospriv, "Failed to allocate memory for F-H signals\n"); - return CSR_WIFI_HIP_RESULT_NO_MEMORY; - } - card->fh_buffer.bufsize = UNIFI_FH_BUF_SIZE; - card->fh_buffer.ptr = card->fh_buffer.buf; - card->fh_buffer.count = 0; - - card->th_buffer.buf = kmalloc(UNIFI_FH_BUF_SIZE, GFP_KERNEL); - if (card->th_buffer.buf == NULL) - { - unifi_error(card->ospriv, "Failed to allocate memory for T-H signals\n"); - return CSR_WIFI_HIP_RESULT_NO_MEMORY; - } - card->th_buffer.bufsize = UNIFI_FH_BUF_SIZE; - card->th_buffer.ptr = card->th_buffer.buf; - card->th_buffer.count = 0; - - - /* - * Allocate memory for the from-host and to-host bulk data slots. - * This is done as separate kmallocs because lots of smaller - * allocations are more likely to succeed than one huge one. - */ - - /* Allocate memory for the array of pointers */ - n = cfg_data->num_fromhost_data_slots; - - unifi_trace(card->ospriv, UDBG3, "Alloc from-host resources, %d slots.\n", n); - card->from_host_data = kmalloc(n * sizeof(slot_desc_t), GFP_KERNEL); - if (card->from_host_data == NULL) - { - unifi_error(card->ospriv, "Failed to allocate memory for F-H bulk data array\n"); - return CSR_WIFI_HIP_RESULT_NO_MEMORY; - } - - /* Initialise from-host bulk data slots */ - for (i = 0; i < n; i++) - { - UNIFI_INIT_BULK_DATA(&card->from_host_data[i].bd); - } - - /* Allocate memory for the array used for slot host tag mapping */ - card->fh_slot_host_tag_record = kmalloc(n * sizeof(u32), GFP_KERNEL); - - if (card->fh_slot_host_tag_record == NULL) - { - unifi_error(card->ospriv, "Failed to allocate memory for F-H slot host tag mapping array\n"); - return CSR_WIFI_HIP_RESULT_NO_MEMORY; - } - - /* Initialise host tag entries for from-host bulk data slots */ - for (i = 0; i < n; i++) - { - card->fh_slot_host_tag_record[i] = CSR_WIFI_HIP_RESERVED_HOST_TAG; - } - - - /* Allocate memory for the array of pointers */ - n = cfg_data->num_tohost_data_slots; - - unifi_trace(card->ospriv, UDBG3, "Alloc to-host resources, %d slots.\n", n); - card->to_host_data = kmalloc(n * sizeof(bulk_data_desc_t), GFP_KERNEL); - if (card->to_host_data == NULL) - { - unifi_error(card->ospriv, "Failed to allocate memory for T-H bulk data array\n"); - return CSR_WIFI_HIP_RESULT_NO_MEMORY; - } - - /* Initialise to-host bulk data slots */ - for (i = 0; i < n; i++) - { - UNIFI_INIT_BULK_DATA(&card->to_host_data[i]); - } - - /* - * Initialise buffers for soft Q - */ - for (i = 0; i < UNIFI_SOFT_COMMAND_Q_LENGTH; i++) - { - for (r = 0; r < UNIFI_MAX_DATA_REFERENCES; r++) - { - UNIFI_INIT_BULK_DATA(&card->fh_command_q_body[i].bulkdata[r]); - } - } - - for (k = 0; k < UNIFI_NO_OF_TX_QS; k++) - { - for (i = 0; i < UNIFI_SOFT_TRAFFIC_Q_LENGTH; i++) - { - for (r = 0; r < UNIFI_MAX_DATA_REFERENCES; r++) - { - UNIFI_INIT_BULK_DATA(&card->fh_traffic_q_body[k][i].bulkdata[r]); - } - } - } - - card->memory_resources_allocated = 1; - - return CSR_RESULT_SUCCESS; -} /* card_allocate_memory_resources() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_free_bulk_data - * - * Free the data associated to a bulk data structure. - * - * Arguments: - * card Pointer to card struct - * bulk_data_slot Pointer to bulk data structure - * - * Returns: - * None. - * - * --------------------------------------------------------------------------- - */ -static void unifi_free_bulk_data(card_t *card, bulk_data_desc_t *bulk_data_slot) -{ - if (bulk_data_slot->data_length != 0) - { - unifi_net_data_free(card->ospriv, bulk_data_slot); - } -} /* unifi_free_bulk_data() */ - - -/* - * --------------------------------------------------------------------------- - * card_free_memory_resources - * - * Frees memory allocated for the from-host, to-host bulk data slots, - * soft queue buffers and bulk data buffers. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -static void card_free_memory_resources(card_t *card) -{ - - unifi_trace(card->ospriv, UDBG1, "Freeing card memory resources.\n"); - - /* Clear our internal queues */ - unifi_cancel_pending_signals(card); - - - kfree(card->to_host_data); - card->to_host_data = NULL; - - kfree(card->from_host_data); - card->from_host_data = NULL; - - /* free the memory for slot host tag mapping array */ - kfree(card->fh_slot_host_tag_record); - card->fh_slot_host_tag_record = NULL; - - kfree(card->fh_buffer.buf); - card->fh_buffer.ptr = card->fh_buffer.buf = NULL; - card->fh_buffer.bufsize = 0; - card->fh_buffer.count = 0; - - kfree(card->th_buffer.buf); - card->th_buffer.ptr = card->th_buffer.buf = NULL; - card->th_buffer.bufsize = 0; - card->th_buffer.count = 0; - - - card->memory_resources_allocated = 0; - -} /* card_free_memory_resources() */ - - -static void card_init_soft_queues(card_t *card) -{ - s16 i; - - unifi_trace(card->ospriv, UDBG1, "Initialising internal signal queues.\n"); - /* Reset any state carried forward from a previous life */ - card->fh_command_queue.q_rd_ptr = 0; - card->fh_command_queue.q_wr_ptr = 0; - (void)scnprintf(card->fh_command_queue.name, UNIFI_QUEUE_NAME_MAX_LENGTH, - "fh_cmd_q"); - for (i = 0; i < UNIFI_NO_OF_TX_QS; i++) - { - card->fh_traffic_queue[i].q_rd_ptr = 0; - card->fh_traffic_queue[i].q_wr_ptr = 0; - (void)scnprintf(card->fh_traffic_queue[i].name, - UNIFI_QUEUE_NAME_MAX_LENGTH, "fh_data_q%d", i); - } -#ifndef CSR_WIFI_HIP_TA_DISABLE - unifi_ta_sampling_init(card); -#endif -} - - -/* - * --------------------------------------------------------------------------- - * unifi_cancel_pending_signals - * - * Free the signals and associated bulk data, pending in the core. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -void unifi_cancel_pending_signals(card_t *card) -{ - s16 i, n, r; - - unifi_trace(card->ospriv, UDBG1, "Canceling pending signals.\n"); - - if (card->to_host_data) - { - /* - * Free any bulk data buffers allocated for the t-h slots - * This will clear all buffers that did not make it to - * unifi_receive_event() before cancel was request. - */ - n = card->config_data.num_tohost_data_slots; - unifi_trace(card->ospriv, UDBG3, "Freeing to-host resources, %d slots.\n", n); - for (i = 0; i < n; i++) - { - unifi_free_bulk_data(card, &card->to_host_data[i]); - } - } - - /* - * If any of the from-host bulk data has reached the card->from_host_data - * but not UniFi, we need to free the buffers here. - */ - if (card->from_host_data) - { - /* Free any bulk data buffers allocated for the f-h slots */ - n = card->config_data.num_fromhost_data_slots; - unifi_trace(card->ospriv, UDBG3, "Freeing from-host resources, %d slots.\n", n); - for (i = 0; i < n; i++) - { - unifi_free_bulk_data(card, &card->from_host_data[i].bd); - } - - for (i = 0; i < UNIFI_NO_OF_TX_QS; i++) - { - card->dynamic_slot_data.from_host_used_slots[i] = 0; - card->dynamic_slot_data.from_host_max_slots[i] = 0; - card->dynamic_slot_data.from_host_reserved_slots[i] = 0; - } - } - - /* - * Free any bulk data buffers allocated in the soft queues. - * This covers the case where a bulk data pointer has reached the soft queue - * but not the card->from_host_data. - */ - unifi_trace(card->ospriv, UDBG3, "Freeing cmd q resources.\n"); - for (i = 0; i < UNIFI_SOFT_COMMAND_Q_LENGTH; i++) - { - for (r = 0; r < UNIFI_MAX_DATA_REFERENCES; r++) - { - unifi_free_bulk_data(card, &card->fh_command_q_body[i].bulkdata[r]); - } - } - - unifi_trace(card->ospriv, UDBG3, "Freeing traffic q resources.\n"); - for (n = 0; n < UNIFI_NO_OF_TX_QS; n++) - { - for (i = 0; i < UNIFI_SOFT_TRAFFIC_Q_LENGTH; i++) - { - for (r = 0; r < UNIFI_MAX_DATA_REFERENCES; r++) - { - unifi_free_bulk_data(card, &card->fh_traffic_q_body[n][i].bulkdata[r]); - } - } - } - - card_init_soft_queues(card); - -} /* unifi_cancel_pending_signals() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_free_card - * - * Free the memory allocated for the card structure and buffers. - * - * Notes: - * The porting layer is responsible for freeing any mini-coredump buffers - * allocated when it called unifi_coredump_init(), by calling - * unifi_coredump_free() before calling this function. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -void unifi_free_card(card_t *card) -{ -#ifdef CSR_PRE_ALLOC_NET_DATA - prealloc_netdata_free(card); -#endif - /* Free any memory allocated. */ - card_free_memory_resources(card); - - /* Warn if caller didn't free coredump buffers */ - if (card->dump_buf) - { - unifi_error(card->ospriv, "Caller should call unifi_coredump_free()\n"); - unifi_coredump_free(card); /* free anyway to prevent memory leak */ - } - - kfree(card); - -} /* unifi_free_card() */ - - -/* - * --------------------------------------------------------------------------- - * card_init_slots - * - * Allocate memory for host-side slot data and signal queues. - * - * Arguments: - * card Pointer to card object - * - * Returns: - * CSR error code. - * --------------------------------------------------------------------------- - */ -static CsrResult card_init_slots(card_t *card) -{ - CsrResult r; - u8 i; - - /* Allocate the buffers we need, only once. */ - if (card->memory_resources_allocated == 1) - { - card_free_memory_resources(card); - } - else - { - /* Initialise our internal command and traffic queues */ - card_init_soft_queues(card); - } - - r = card_allocate_memory_resources(card); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to allocate card memory resources.\n"); - card_free_memory_resources(card); - return r; - } - - if (card->sdio_ctrl_addr == 0) - { - unifi_error(card->ospriv, "Failed to find config struct!\n"); - return CSR_WIFI_HIP_RESULT_INVALID_VALUE; - } - - /* - * Set initial counts. - */ - - card->from_host_data_head = 0; - - /* Get initial signal counts from UniFi, in case it has not been reset. */ - { - u16 s; - - /* Get the from-host-signals-written count */ - r = unifi_card_read16(card, card->sdio_ctrl_addr + 0, &s); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to read from-host sig written count\n"); - return r; - } - card->from_host_signals_w = (s16)s; - - /* Get the to-host-signals-written count */ - r = unifi_card_read16(card, card->sdio_ctrl_addr + 6, &s); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to read to-host sig read count\n"); - return r; - } - card->to_host_signals_r = (s16)s; - } - - /* Set Initialised flag. */ - r = unifi_card_write16(card, card->init_flag_addr, 0x0001); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to write initialised flag\n"); - return r; - } - - /* Dynamic queue reservation */ - memset(&card->dynamic_slot_data, 0, sizeof(card_dynamic_slot_t)); - - for (i = 0; i < UNIFI_NO_OF_TX_QS; i++) - { - card->dynamic_slot_data.from_host_max_slots[i] = card->config_data.num_fromhost_data_slots - - UNIFI_RESERVED_COMMAND_SLOTS; - card->dynamic_slot_data.queue_stable[i] = FALSE; - } - - card->dynamic_slot_data.packets_interval = UNIFI_PACKETS_INTERVAL; - - return CSR_RESULT_SUCCESS; -} /* card_init_slots() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_set_udi_hook - * - * Registers the udi hook that reports the sent signals to the core. - * - * Arguments: - * card Pointer to the card context struct - * udi_fn Pointer to the callback function. - * - * Returns: - * CSR_WIFI_HIP_RESULT_INVALID_VALUE if the card pointer is invalid, - * CSR_RESULT_SUCCESS on success. - * --------------------------------------------------------------------------- - */ -CsrResult unifi_set_udi_hook(card_t *card, udi_func_t udi_fn) -{ - if (card == NULL) - { - return CSR_WIFI_HIP_RESULT_INVALID_VALUE; - } - - if (card->udi_hook == NULL) - { - card->udi_hook = udi_fn; - } - - return CSR_RESULT_SUCCESS; -} /* unifi_set_udi_hook() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_remove_udi_hook - * - * Removes the udi hook that reports the sent signals from the core. - * - * Arguments: - * card Pointer to the card context struct - * udi_fn Pointer to the callback function. - * - * Returns: - * CSR_WIFI_HIP_RESULT_INVALID_VALUE if the card pointer is invalid, - * CSR_RESULT_SUCCESS on success. - * --------------------------------------------------------------------------- - */ -CsrResult unifi_remove_udi_hook(card_t *card, udi_func_t udi_fn) -{ - if (card == NULL) - { - return CSR_WIFI_HIP_RESULT_INVALID_VALUE; - } - - if (card->udi_hook == udi_fn) - { - card->udi_hook = NULL; - } - - return CSR_RESULT_SUCCESS; -} /* unifi_remove_udi_hook() */ - - -static void CardReassignDynamicReservation(card_t *card) -{ - u8 i; - - unifi_trace(card->ospriv, UDBG5, "Packets Txed %d %d %d %d\n", - card->dynamic_slot_data.packets_txed[0], - card->dynamic_slot_data.packets_txed[1], - card->dynamic_slot_data.packets_txed[2], - card->dynamic_slot_data.packets_txed[3]); - - /* Clear reservation and recalculate max slots */ - for (i = 0; i < UNIFI_NO_OF_TX_QS; i++) - { - card->dynamic_slot_data.queue_stable[i] = FALSE; - card->dynamic_slot_data.from_host_reserved_slots[i] = 0; - card->dynamic_slot_data.from_host_max_slots[i] = card->config_data.num_fromhost_data_slots - - UNIFI_RESERVED_COMMAND_SLOTS; - card->dynamic_slot_data.packets_txed[i] = 0; - - unifi_trace(card->ospriv, UDBG5, "CardReassignDynamicReservation: queue %d reserved %d Max %d\n", i, - card->dynamic_slot_data.from_host_reserved_slots[i], - card->dynamic_slot_data.from_host_max_slots[i]); - } - - card->dynamic_slot_data.total_packets_txed = 0; -} - - -/* Algorithm to dynamically reserve slots. The logic is based mainly on the outstanding queue - * length. Slots are reserved for particular queues during an interval and cleared after the interval. - * Each queue has three associated variables.. a) used slots - the number of slots currently occupied - * by the queue b) reserved slots - number of slots reserved specifically for the queue c) max slots - total - * slots that this queue can actually use (may be higher than reserved slots and is dependent on reserved slots - * for other queues). - * This function is called when there are no slots available for a queue. It checks to see if there are enough - * unreserved slots sufficient for this request. If available these slots are reserved for the queue. - * If there are not enough unreserved slots, a fair share for each queue is calculated based on the total slots - * and the number of active queues (any queue with existing reservation is considered active). Queues needing - * less than their fair share are allowed to have the previously reserved slots. The remaining slots are - * distributed evenly among queues that need more than the fair share - * - * A better scheme would take current bandwidth per AC into consideration when reserving slots. An - * implementation scheme could consider the relative time/service period for slots in an AC. If the firmware - * services other ACs faster than a particular AC (packets wait in the slots longer) then it is fair to reserve - * less slots for the AC - */ -static void CardCheckDynamicReservation(card_t *card, unifi_TrafficQueue queue) -{ - u16 q_len, active_queues = 0, excess_queue_slots, div_extra_slots, - queue_fair_share, reserved_slots = 0, q, excess_need_queues = 0, unmovable_slots = 0; - s32 i; - q_t *sigq; - u16 num_data_slots = card->config_data.num_fromhost_data_slots - UNIFI_RESERVED_COMMAND_SLOTS; - - /* Calculate the pending queue length */ - sigq = &card->fh_traffic_queue[queue]; - q_len = CSR_WIFI_HIP_Q_SLOTS_USED(sigq); - - if (q_len <= card->dynamic_slot_data.from_host_reserved_slots[queue]) - { - unifi_trace(card->ospriv, UDBG5, "queue %d q_len %d already has that many reserved slots, exiting\n", queue, q_len); - return; - } - - /* Upper limit */ - if (q_len > num_data_slots) - { - q_len = num_data_slots; - } - - for (i = 0; i < UNIFI_NO_OF_TX_QS; i++) - { - if (i != (s32)queue) - { - reserved_slots += card->dynamic_slot_data.from_host_reserved_slots[i]; - } - if ((i == (s32)queue) || (card->dynamic_slot_data.from_host_reserved_slots[i] > 0)) - { - active_queues++; - } - } - - unifi_trace(card->ospriv, UDBG5, "CardCheckDynamicReservation: queue %d q_len %d\n", queue, q_len); - unifi_trace(card->ospriv, UDBG5, "Active queues %d reserved slots on other queues %d\n", - active_queues, reserved_slots); - - if (reserved_slots + q_len <= num_data_slots) - { - card->dynamic_slot_data.from_host_reserved_slots[queue] = q_len; - if (q_len == num_data_slots) - { - /* This is the common case when just 1 stream is going */ - card->dynamic_slot_data.queue_stable[queue] = TRUE; - } - } - else - { - queue_fair_share = num_data_slots / active_queues; - unifi_trace(card->ospriv, UDBG5, "queue fair share %d\n", queue_fair_share); - - /* Evenly distribute slots among active queues */ - /* Find out the queues that need excess of fair share. Also find slots allocated - * to queues less than their fair share, these slots cannot be reallocated (unmovable slots) */ - - card->dynamic_slot_data.from_host_reserved_slots[queue] = q_len; - - for (i = 0; i < UNIFI_NO_OF_TX_QS; i++) - { - if (card->dynamic_slot_data.from_host_reserved_slots[i] > queue_fair_share) - { - excess_need_queues++; - } - else - { - unmovable_slots += card->dynamic_slot_data.from_host_reserved_slots[i]; - } - } - - unifi_trace(card->ospriv, UDBG5, "Excess need queues %d\n", excess_need_queues); - - /* Now find the slots per excess demand queue */ - excess_queue_slots = (num_data_slots - unmovable_slots) / excess_need_queues; - div_extra_slots = (num_data_slots - unmovable_slots) - excess_queue_slots * excess_need_queues; - for (i = UNIFI_NO_OF_TX_QS - 1; i >= 0; i--) - { - if (card->dynamic_slot_data.from_host_reserved_slots[i] > excess_queue_slots) - { - card->dynamic_slot_data.from_host_reserved_slots[i] = excess_queue_slots; - if (div_extra_slots > 0) - { - card->dynamic_slot_data.from_host_reserved_slots[i]++; - div_extra_slots--; - } - /* No more slots will be allocated to this queue during the current interval */ - card->dynamic_slot_data.queue_stable[i] = TRUE; - unifi_trace(card->ospriv, UDBG5, "queue stable %d\n", i); - } - } - } - - /* Redistribute max slots */ - for (i = 0; i < UNIFI_NO_OF_TX_QS; i++) - { - reserved_slots = 0; - for (q = 0; q < UNIFI_NO_OF_TX_QS; q++) - { - if (i != q) - { - reserved_slots += card->dynamic_slot_data.from_host_reserved_slots[q]; - } - } - - card->dynamic_slot_data.from_host_max_slots[i] = num_data_slots - reserved_slots; - unifi_trace(card->ospriv, UDBG5, "queue %d reserved %d Max %d\n", i, - card->dynamic_slot_data.from_host_reserved_slots[i], - card->dynamic_slot_data.from_host_max_slots[i]); - } - -} - - -/* - * --------------------------------------------------------------------------- - * CardClearFromHostDataSlot - * - * Clear a the given data slot, making it available again. - * - * Arguments: - * card Pointer to Card object - * slot Index of the signal slot to clear. - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -void CardClearFromHostDataSlot(card_t *card, const s16 slot) -{ - u8 queue = card->from_host_data[slot].queue; - const void *os_data_ptr = card->from_host_data[slot].bd.os_data_ptr; - - if (card->from_host_data[slot].bd.data_length == 0) - { - unifi_warning(card->ospriv, - "Surprise: request to clear an already free FH data slot: %d\n", - slot); - return; - } - - if (os_data_ptr == NULL) - { - unifi_warning(card->ospriv, - "Clearing FH data slot %d: has null payload, len=%d\n", - slot, card->from_host_data[slot].bd.data_length); - } - - /* Free card->from_host_data[slot].bd.os_net_ptr here. */ - /* Mark slot as free by setting length to 0. */ - unifi_free_bulk_data(card, &card->from_host_data[slot].bd); - if (queue < UNIFI_NO_OF_TX_QS) - { - if (card->dynamic_slot_data.from_host_used_slots[queue] == 0) - { - unifi_error(card->ospriv, "Goofed up used slots q = %d used slots = %d\n", - queue, - card->dynamic_slot_data.from_host_used_slots[queue]); - } - else - { - card->dynamic_slot_data.from_host_used_slots[queue]--; - } - card->dynamic_slot_data.packets_txed[queue]++; - card->dynamic_slot_data.total_packets_txed++; - if (card->dynamic_slot_data.total_packets_txed >= card->dynamic_slot_data.packets_interval) - { - CardReassignDynamicReservation(card); - } - } - - unifi_trace(card->ospriv, UDBG4, "CardClearFromHostDataSlot: slot %d recycled %p\n", slot, os_data_ptr); - -} /* CardClearFromHostDataSlot() */ - - -#ifdef CSR_WIFI_REQUEUE_PACKET_TO_HAL -/* - * --------------------------------------------------------------------------- - * CardClearFromHostDataSlotWithoutFreeingBulkData - * - * Clear the given data slot with out freeing the bulk data. - * - * Arguments: - * card Pointer to Card object - * slot Index of the signal slot to clear. - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -void CardClearFromHostDataSlotWithoutFreeingBulkData(card_t *card, const s16 slot) -{ - u8 queue = card->from_host_data[slot].queue; - - /* Initialise the from_host data slot so it can be re-used, - * Set length field in from_host_data array to 0. - */ - UNIFI_INIT_BULK_DATA(&card->from_host_data[slot].bd); - - queue = card->from_host_data[slot].queue; - - if (queue < UNIFI_NO_OF_TX_QS) - { - if (card->dynamic_slot_data.from_host_used_slots[queue] == 0) - { - unifi_error(card->ospriv, "Goofed up used slots q = %d used slots = %d\n", - queue, - card->dynamic_slot_data.from_host_used_slots[queue]); - } - else - { - card->dynamic_slot_data.from_host_used_slots[queue]--; - } - card->dynamic_slot_data.packets_txed[queue]++; - card->dynamic_slot_data.total_packets_txed++; - if (card->dynamic_slot_data.total_packets_txed >= - card->dynamic_slot_data.packets_interval) - { - CardReassignDynamicReservation(card); - } - } -} /* CardClearFromHostDataSlotWithoutFreeingBulkData() */ - - -#endif - -u16 CardGetDataSlotSize(card_t *card) -{ - return card->config_data.data_slot_size; -} /* CardGetDataSlotSize() */ - - -/* - * --------------------------------------------------------------------------- - * CardGetFreeFromHostDataSlots - * - * Retrieve the number of from-host bulk data slots available. - * - * Arguments: - * card Pointer to the card context struct - * - * Returns: - * Number of free from-host bulk data slots. - * --------------------------------------------------------------------------- - */ -u16 CardGetFreeFromHostDataSlots(card_t *card) -{ - u16 i, n = 0; - - /* First two slots reserved for MLME */ - for (i = 0; i < card->config_data.num_fromhost_data_slots; i++) - { - if (card->from_host_data[i].bd.data_length == 0) - { - /* Free slot */ - n++; - } - } - - return n; -} /* CardGetFreeFromHostDataSlots() */ - - -/* - * --------------------------------------------------------------------------- - * CardAreAllFromHostDataSlotsEmpty - * - * Returns the state of from-host bulk data slots. - * - * Arguments: - * card Pointer to the card context struct - * - * Returns: - * 1 The from-host bulk data slots are all empty (available). - * 0 Some or all the from-host bulk data slots are in use. - * --------------------------------------------------------------------------- - */ -u16 CardAreAllFromHostDataSlotsEmpty(card_t *card) -{ - u16 i; - - for (i = 0; i < card->config_data.num_fromhost_data_slots; i++) - { - if (card->from_host_data[i].bd.data_length != 0) - { - return 0; - } - } - - return 1; -} /* CardGetFreeFromHostDataSlots() */ - - -static CsrResult unifi_identify_hw(card_t *card) -{ - - card->chip_id = card->sdio_if->sdioId.cardId; - card->function = card->sdio_if->sdioId.sdioFunction; - card->sdio_io_block_size = card->sdio_if->blockSize; - - /* If SDIO controller doesn't support byte mode CMD53, pad transfers to block sizes */ - card->sdio_io_block_pad = (card->sdio_if->features & CSR_SDIO_FEATURE_BYTE_MODE)?FALSE : TRUE; - - /* - * Setup the chip helper so that we can access the registers (and - * also tell what sub-type of HIP we should use). - */ - card->helper = ChipHelper_GetVersionSdio((u8)card->chip_id); - if (!card->helper) - { - unifi_error(card->ospriv, "Null ChipHelper\n"); - } - - unifi_info(card->ospriv, "Chip ID 0x%02X Function %u Block Size %u Name %s(%s)\n", - card->chip_id, card->function, card->sdio_io_block_size, - ChipHelper_MarketingName(card->helper), - ChipHelper_FriendlyName(card->helper)); - - return CSR_RESULT_SUCCESS; -} /* unifi_identify_hw() */ - - -static CsrResult unifi_prepare_hw(card_t *card) -{ - CsrResult r; - CsrResult csrResult; - enum unifi_host_state old_state = card->host_state; - - r = unifi_identify_hw(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to identify hw\n"); - return r; - } - - unifi_trace(card->ospriv, UDBG1, - "%s mode SDIO\n", card->sdio_io_block_pad?"Block" : "Byte"); - /* - * Chip must be a awake or blocks that are asleep may not get - * reset. We can only do this after we have read the chip_id. - */ - r = unifi_set_host_state(card, UNIFI_HOST_STATE_AWAKE); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - - if (old_state == UNIFI_HOST_STATE_TORPID) - { - /* Ensure the initial clock rate is set; if a reset occurred when the chip was - * TORPID, unifi_set_host_state() may have raised it to MAX. - */ - csrResult = CsrSdioMaxBusClockFrequencySet(card->sdio_if, UNIFI_SDIO_CLOCK_INIT_HZ); - if (csrResult != CSR_RESULT_SUCCESS) - { - r = ConvertCsrSdioToCsrHipResult(card, csrResult); - return r; - } - card->sdio_clock_speed = UNIFI_SDIO_CLOCK_INIT_HZ; - } - - /* - * The WLAN function must be enabled to access MAILBOX2 and DEBUG_RST - * registers. - */ - csrResult = CsrSdioFunctionEnable(card->sdio_if); - if (csrResult == CSR_SDIO_RESULT_NO_DEVICE) - { - return CSR_WIFI_HIP_RESULT_NO_DEVICE; - } - if (csrResult != CSR_RESULT_SUCCESS) - { - r = ConvertCsrSdioToCsrHipResult(card, csrResult); - /* Can't enable WLAN function. Try resetting the SDIO block. */ - unifi_error(card->ospriv, "Failed to re-enable function %d.\n", card->function); - return r; - } - - /* - * Poke some registers to make sure the PLL has started, - * otherwise memory accesses are likely to fail. - */ - bootstrap_chip_hw(card); - - /* Try to read the chip version from register. */ - r = unifi_read_chip_version(card); - if (r != CSR_RESULT_SUCCESS) - { - return r; - } - - return CSR_RESULT_SUCCESS; -} /* unifi_prepare_hw() */ - - -static CsrResult unifi_read_chip_version(card_t *card) -{ - u32 gbl_chip_version; - CsrResult r; - u16 ver; - - gbl_chip_version = ChipHelper_GBL_CHIP_VERSION(card->helper); - - /* Try to read the chip version from register. */ - if (gbl_chip_version != 0) - { - r = unifi_read_direct16(card, gbl_chip_version * 2, &ver); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to read GBL_CHIP_VERSION\n"); - return r; - } - card->chip_version = ver; - } - else - { - unifi_info(card->ospriv, "Unknown Chip ID, cannot locate GBL_CHIP_VERSION\n"); - r = CSR_RESULT_FAILURE; - } - - unifi_info(card->ospriv, "Chip Version 0x%04X\n", card->chip_version); - - return r; -} /* unifi_read_chip_version() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_reset_hardware - * - * Execute the UniFi reset sequence. - * - * Note: This may fail if the chip is going TORPID so retry at - * least once. - * - * Arguments: - * card - pointer to card context structure - * - * Returns: - * CSR_RESULT_SUCCESS on success, CSR error otherwise. - * - * Notes: - * Some platforms (e.g. Windows Vista) do not allow access to registers - * that are necessary for a software soft reset. - * --------------------------------------------------------------------------- - */ -static CsrResult unifi_reset_hardware(card_t *card) -{ - CsrResult r; - u16 new_block_size = UNIFI_IO_BLOCK_SIZE; - CsrResult csrResult; - - /* Errors returned by unifi_prepare_hw() are not critical at this point */ - r = unifi_prepare_hw(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - - /* First try SDIO controller reset, which may power cycle the UniFi, assert - * its reset line, or not be implemented depending on the platform. - */ - unifi_info(card->ospriv, "Calling CsrSdioHardReset\n"); - csrResult = CsrSdioHardReset(card->sdio_if); - if (csrResult == CSR_RESULT_SUCCESS) - { - unifi_info(card->ospriv, "CsrSdioHardReset succeeded on resetting UniFi\n"); - r = unifi_prepare_hw(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "unifi_prepare_hw failed after hard reset\n"); - return r; - } - } - else if (csrResult == CSR_SDIO_RESULT_NO_DEVICE) - { - return CSR_WIFI_HIP_RESULT_NO_DEVICE; - } - else - { - /* Falling back to software hard reset methods */ - unifi_info(card->ospriv, "Falling back to software hard reset\n"); - r = unifi_card_hard_reset(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "software hard reset failed\n"); - return r; - } - - /* If we fell back to unifi_card_hard_reset() methods, chip version may - * not have been read. (Note in the unlikely event that it is zero, - * it will be harmlessly read again) - */ - if (card->chip_version == 0) - { - r = unifi_read_chip_version(card); - if (r != CSR_RESULT_SUCCESS) - { - return r; - } - } - } - -#ifdef CSR_WIFI_HIP_SDIO_BLOCK_SIZE - new_block_size = CSR_WIFI_HIP_SDIO_BLOCK_SIZE; -#endif - - /* After hard reset, we need to restore the SDIO block size */ - csrResult = CsrSdioBlockSizeSet(card->sdio_if, new_block_size); - r = ConvertCsrSdioToCsrHipResult(card, csrResult); - - /* Warn if a different block size was achieved by the transport */ - if (card->sdio_if->blockSize != new_block_size) - { - unifi_info(card->ospriv, - "Actually got block size %d\n", card->sdio_if->blockSize); - } - - /* sdio_io_block_size always needs be updated from the achieved block size, - * as it is used by the OS layer to allocate memory in unifi_net_malloc(). - * Controllers which don't support block mode (e.g. CSPI) will report a - * block size of zero. - */ - if (card->sdio_if->blockSize == 0) - { - unifi_info(card->ospriv, "Block size 0, block mode not available\n"); - - /* Set sdio_io_block_size to 1 so that unifi_net_data_malloc() has a - * sensible rounding value. Elsewhere padding will already be - * disabled because the controller supports byte mode. - */ - card->sdio_io_block_size = 1; - - /* Controller features must declare support for byte mode */ - if (!(card->sdio_if->features & CSR_SDIO_FEATURE_BYTE_MODE)) - { - unifi_error(card->ospriv, "Requires byte mode\n"); - r = CSR_WIFI_HIP_RESULT_INVALID_VALUE; - } - } - else - { - /* Padding will be enabled if CSR_SDIO_FEATURE_BYTE_MODE isn't set */ - card->sdio_io_block_size = card->sdio_if->blockSize; - } - - - return r; -} /* unifi_reset_hardware() */ - - -/* - * --------------------------------------------------------------------------- - * card_reset_method_io_enable - * - * Issue a hard reset to the hw writing the IO_ENABLE. - * - * Arguments: - * card Pointer to Card object - * - * Returns: - * 0 on success, - * CSR_WIFI_HIP_RESULT_NO_DEVICE if the card was ejected - * CSR_RESULT_FAILURE if an SDIO error occurred or if a response - * was not seen in the expected time - * --------------------------------------------------------------------------- - */ -static CsrResult card_reset_method_io_enable(card_t *card) -{ - CsrResult r; - CsrResult csrResult; - - /* - * This resets only function 1, so should be used in - * preference to the method below (CSR_FUNC_EN) - */ - unifi_trace(card->ospriv, UDBG1, "Hard reset (IO_ENABLE)\n"); - - csrResult = CsrSdioFunctionDisable(card->sdio_if); - if (csrResult == CSR_SDIO_RESULT_NO_DEVICE) - { - return CSR_WIFI_HIP_RESULT_NO_DEVICE; - } - if (csrResult != CSR_RESULT_SUCCESS) - { - r = ConvertCsrSdioToCsrHipResult(card, csrResult); - unifi_warning(card->ospriv, "SDIO error writing IO_ENABLE: %d\n", r); - } - else - { - /* Delay here to let the reset take affect. */ - CsrThreadSleep(RESET_SETTLE_DELAY); - - r = card_wait_for_unifi_to_disable(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - - if (r == CSR_RESULT_SUCCESS) - { - r = card_wait_for_unifi_to_reset(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - } - } - - if (r != CSR_RESULT_SUCCESS) - { - unifi_trace(card->ospriv, UDBG1, "Hard reset (CSR_FUNC_EN)\n"); - - r = sdio_write_f0(card, SDIO_CSR_FUNC_EN, 0); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_warning(card->ospriv, "SDIO error writing SDIO_CSR_FUNC_EN: %d\n", r); - return r; - } - else - { - /* Delay here to let the reset take affect. */ - CsrThreadSleep(RESET_SETTLE_DELAY); - - r = card_wait_for_unifi_to_reset(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - } - } - - if (r != CSR_RESULT_SUCCESS) - { - unifi_warning(card->ospriv, "card_reset_method_io_enable failed to reset UniFi\n"); - } - - return r; -} /* card_reset_method_io_enable() */ - - -/* - * --------------------------------------------------------------------------- - * card_reset_method_dbg_reset - * - * Issue a hard reset to the hw writing the DBG_RESET. - * - * Arguments: - * card Pointer to Card object - * - * Returns: - * CSR_RESULT_SUCCESS on success, - * CSR_WIFI_HIP_RESULT_NO_DEVICE if the card was ejected - * CSR_RESULT_FAILURE if an SDIO error occurred or if a response - * was not seen in the expected time - * --------------------------------------------------------------------------- - */ -static CsrResult card_reset_method_dbg_reset(card_t *card) -{ - CsrResult r; - - /* - * Prepare UniFi for h/w reset - */ - if (card->host_state == UNIFI_HOST_STATE_TORPID) - { - r = unifi_set_host_state(card, UNIFI_HOST_STATE_DROWSY); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to set UNIFI_HOST_STATE_DROWSY\n"); - return r; - } - CsrThreadSleep(5); - } - - r = unifi_card_stop_processor(card, UNIFI_PROC_BOTH); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Can't stop processors\n"); - return r; - } - - unifi_trace(card->ospriv, UDBG1, "Hard reset (DBG_RESET)\n"); - - /* - * This register write may fail. The debug reset resets - * parts of the Function 0 sections of the chip, and - * therefore the response cannot be sent back to the host. - */ - r = unifi_write_direct_8_or_16(card, ChipHelper_DBG_RESET(card->helper) * 2, 1); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_warning(card->ospriv, "SDIO error writing DBG_RESET: %d\n", r); - return r; - } - - /* Delay here to let the reset take affect. */ - CsrThreadSleep(RESET_SETTLE_DELAY); - - r = card_wait_for_unifi_to_reset(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_warning(card->ospriv, "card_reset_method_dbg_reset failed to reset UniFi\n"); - } - - return r; -} /* card_reset_method_dbg_reset() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_card_hard_reset - * - * Issue reset to hardware, by writing to registers on the card. - * Power to the card is preserved. - * - * Arguments: - * card Pointer to Card object - * - * Returns: - * CSR_RESULT_SUCCESS on success, - * CSR_WIFI_HIP_RESULT_NO_DEVICE if the card was ejected - * CSR_RESULT_FAILURE if an SDIO error occurred or if a response - * was not seen in the expected time - * --------------------------------------------------------------------------- - */ -CsrResult unifi_card_hard_reset(card_t *card) -{ - CsrResult r; - const struct chip_helper_reset_values *init_data; - u32 chunks; - - /* Clear cache of page registers */ - card->proc_select = (u32)(-1); - card->dmem_page = (u32)(-1); - card->pmem_page = (u32)(-1); - - /* - * We need to have a valid card->helper before we use software hard reset. - * If unifi_identify_hw() fails to get the card ID, it probably means - * that there is no way to talk to the h/w. - */ - r = unifi_identify_hw(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "unifi_card_hard_reset failed to identify h/w\n"); - return r; - } - - /* Search for some reset code. */ - chunks = ChipHelper_HostResetSequence(card->helper, &init_data); - if (chunks != 0) - { - unifi_error(card->ospriv, - "Hard reset (Code download) is unsupported\n"); - - return CSR_RESULT_FAILURE; - } - - if (card->chip_id > SDIO_CARD_ID_UNIFI_2) - { - /* The HIP spec considers this a bus-specific reset. - * This resets only function 1, so should be used in - * preference to the method below (CSR_FUNC_EN) - * If this method fails, it means that the f/w is probably - * not running. In this case, try the DBG_RESET method. - */ - r = card_reset_method_io_enable(card); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r == CSR_RESULT_SUCCESS) - { - return r; - } - } - - /* Software hard reset */ - r = card_reset_method_dbg_reset(card); - - return r; -} /* unifi_card_hard_reset() */ - - -/* - * --------------------------------------------------------------------------- - * - * CardGenInt - * - * Prod the card. - * This function causes an internal interrupt to be raised in the - * UniFi chip. It is used to signal the firmware that some action has - * been completed. - * The UniFi Host Interface asks that the value used increments for - * debugging purposes. - * - * Arguments: - * card Pointer to Card object - * - * Returns: - * CSR_RESULT_SUCCESS on success, - * CSR_WIFI_HIP_RESULT_NO_DEVICE if the card was ejected - * CSR_RESULT_FAILURE if an SDIO error occurred or if a response - * was not seen in the expected time - * --------------------------------------------------------------------------- - */ -CsrResult CardGenInt(card_t *card) -{ - CsrResult r; - - if (card->chip_id > SDIO_CARD_ID_UNIFI_2) - { - r = sdio_write_f0(card, SDIO_CSR_FROM_HOST_SCRATCH0, - (u8)card->unifi_interrupt_seq); - } - else - { - r = unifi_write_direct_8_or_16(card, - ChipHelper_SHARED_IO_INTERRUPT(card->helper) * 2, - (u8)card->unifi_interrupt_seq); - } - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "SDIO error writing UNIFI_SHARED_IO_INTERRUPT: %d\n", r); - return r; - } - - card->unifi_interrupt_seq++; - - return CSR_RESULT_SUCCESS; -} /* CardGenInt() */ - - -/* - * --------------------------------------------------------------------------- - * CardEnableInt - * - * Enable the outgoing SDIO interrupt from UniFi to the host. - * - * Arguments: - * card Pointer to Card object - * - * Returns: - * CSR_RESULT_SUCCESS on success, - * CSR_WIFI_HIP_RESULT_NO_DEVICE if the card was ejected - * CSR_RESULT_FAILURE if an SDIO error occurred, - * --------------------------------------------------------------------------- - */ -CsrResult CardEnableInt(card_t *card) -{ - CsrResult r; - u8 int_enable; - - r = sdio_read_f0(card, SDIO_INT_ENABLE, &int_enable); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "SDIO error reading SDIO_INT_ENABLE\n"); - return r; - } - - int_enable |= (1 << card->function) | UNIFI_SD_INT_ENABLE_IENM; - - r = sdio_write_f0(card, SDIO_INT_ENABLE, int_enable); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "SDIO error writing SDIO_INT_ENABLE\n"); - return r; - } - - return CSR_RESULT_SUCCESS; -} /* CardEnableInt() */ - - -/* - * --------------------------------------------------------------------------- - * CardDisableInt - * - * Disable the outgoing SDIO interrupt from UniFi to the host. - * - * Arguments: - * card Pointer to Card object - * - * Returns: - * CSR_RESULT_SUCCESS on success, - * CSR_WIFI_HIP_RESULT_NO_DEVICE if the card was ejected - * CSR_RESULT_FAILURE if an SDIO error occurred, - * --------------------------------------------------------------------------- - */ -CsrResult CardDisableInt(card_t *card) -{ - CsrResult r; - u8 int_enable; - - r = sdio_read_f0(card, SDIO_INT_ENABLE, &int_enable); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "SDIO error reading SDIO_INT_ENABLE\n"); - return r; - } - - int_enable &= ~(1 << card->function); - - r = sdio_write_f0(card, SDIO_INT_ENABLE, int_enable); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "SDIO error writing SDIO_INT_ENABLE\n"); - return r; - } - - return CSR_RESULT_SUCCESS; -} /* CardDisableInt() */ - - -/* - * --------------------------------------------------------------------------- - * CardPendingInt - * - * Determine whether UniFi is currently asserting the SDIO interrupt - * request. - * - * Arguments: - * card Pointer to Card object - * pintr Pointer to location to write interrupt status, - * TRUE if interrupt pending, - * FALSE if no interrupt pending. - * Returns: - * CSR_RESULT_SUCCESS interrupt status read successfully - * CSR_WIFI_HIP_RESULT_NO_DEVICE if the card was ejected - * CSR_RESULT_FAILURE if an SDIO error occurred, - * --------------------------------------------------------------------------- - */ -CsrResult CardPendingInt(card_t *card, u8 *pintr) -{ - CsrResult r; - u8 pending; - - *pintr = FALSE; - - r = sdio_read_f0(card, SDIO_INT_PENDING, &pending); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "SDIO error reading SDIO_INT_PENDING\n"); - return r; - } - - *pintr = (pending & (1 << card->function))?TRUE : FALSE; - - return CSR_RESULT_SUCCESS; -} /* CardPendingInt() */ - - -/* - * --------------------------------------------------------------------------- - * CardClearInt - * - * Clear the UniFi SDIO interrupt request. - * - * Arguments: - * card Pointer to Card object - * - * Returns: - * CSR_RESULT_SUCCESS if pending interrupt was cleared, or no pending interrupt. - * CSR_WIFI_HIP_RESULT_NO_DEVICE if the card was ejected - * CSR_RESULT_FAILURE if an SDIO error occurred, - * --------------------------------------------------------------------------- - */ -CsrResult CardClearInt(card_t *card) -{ - CsrResult r; - u8 intr; - - if (card->chip_id > SDIO_CARD_ID_UNIFI_2) - { - /* CardPendingInt() sets intr, if there is a pending interrupt */ - r = CardPendingInt(card, &intr); - if (intr == FALSE) - { - return r; - } - - r = sdio_write_f0(card, SDIO_CSR_HOST_INT_CLEAR, 1); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "SDIO error writing SDIO_CSR_HOST_INT_CLEAR\n"); - } - } - else - { - r = unifi_write_direct_8_or_16(card, - ChipHelper_SDIO_HOST_INT(card->helper) * 2, - 0); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "SDIO error writing UNIFI_SDIO_HOST_INT\n"); - } - } - - return r; -} /* CardClearInt() */ - - -/* - * --------------------------------------------------------------------------- - * CardIntEnabled - * - * Determine whether UniFi is currently asserting the SDIO interrupt - * request. - * - * Arguments: - * card Pointer to Card object - * enabled Pointer to location to write interrupt enable status, - * TRUE if interrupts enabled, - * FALSE if interupts disabled. - * - * Returns: - * CSR_WIFI_HIP_RESULT_NO_DEVICE if the card was ejected - * CSR_RESULT_FAILURE if an SDIO error occurred, - * --------------------------------------------------------------------------- - */ -CsrResult CardIntEnabled(card_t *card, u8 *enabled) -{ - CsrResult r; - u8 int_enable; - - r = sdio_read_f0(card, SDIO_INT_ENABLE, &int_enable); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "SDIO error reading SDIO_INT_ENABLE\n"); - return r; - } - - *enabled = (int_enable & (1 << card->function))?TRUE : FALSE; - - return CSR_RESULT_SUCCESS; -} /* CardIntEnabled() */ - - -/* - * --------------------------------------------------------------------------- - * CardWriteBulkData - * Allocate slot in the pending bulkdata arrays and assign it to a signal's - * bulkdata reference. The slot is then ready for UniFi's bulkdata commands - * to transfer the data to/from the host. - * - * Arguments: - * card Pointer to Card object - * csptr Pending signal pointer, including bulkdata ref - * queue Traffic queue that this signal is using - * - * Returns: - * CSR_RESULT_SUCCESS if a free slot was assigned - * CSR_RESULT_FAILURE if no slot was available - * --------------------------------------------------------------------------- - */ -CsrResult CardWriteBulkData(card_t *card, card_signal_t *csptr, unifi_TrafficQueue queue) -{ - u16 i, slots[UNIFI_MAX_DATA_REFERENCES], j = 0; - u8 *packed_sigptr, num_slots_required = 0; - bulk_data_desc_t *bulkdata = csptr->bulkdata; - s16 h, nslots; - - /* Count the number of slots required */ - for (i = 0; i < UNIFI_MAX_DATA_REFERENCES; i++) - { - if (bulkdata[i].data_length != 0) - { - num_slots_required++; - } - } - - /* Get the slot numbers */ - if (num_slots_required != 0) - { - /* Last 2 slots for MLME */ - if (queue == UNIFI_TRAFFIC_Q_MLME) - { - h = card->config_data.num_fromhost_data_slots - UNIFI_RESERVED_COMMAND_SLOTS; - for (i = 0; i < card->config_data.num_fromhost_data_slots; i++) - { - if (card->from_host_data[h].bd.data_length == 0) - { - /* Free data slot, claim it */ - slots[j++] = h; - if (j == num_slots_required) - { - break; - } - } - - if (++h >= card->config_data.num_fromhost_data_slots) - { - h = 0; - } - } - } - else - { - if (card->dynamic_slot_data.from_host_used_slots[queue] - < card->dynamic_slot_data.from_host_max_slots[queue]) - { - /* Data commands get a free slot only after a few checks */ - nslots = card->config_data.num_fromhost_data_slots - UNIFI_RESERVED_COMMAND_SLOTS; - - h = card->from_host_data_head; - - for (i = 0; i < nslots; i++) - { - if (card->from_host_data[h].bd.data_length == 0) - { - /* Free data slot, claim it */ - slots[j++] = h; - if (j == num_slots_required) - { - break; - } - } - - if (++h >= nslots) - { - h = 0; - } - } - card->from_host_data_head = h; - } - } - - /* Required number of slots are not available, bail out */ - if (j != num_slots_required) - { - unifi_trace(card->ospriv, UDBG5, "CardWriteBulkData: didn't find free slot/s\n"); - - /* If we haven't already reached the stable state we can ask for reservation */ - if ((queue != UNIFI_TRAFFIC_Q_MLME) && (card->dynamic_slot_data.queue_stable[queue] == FALSE)) - { - CardCheckDynamicReservation(card, queue); - } - - for (i = 0; i < card->config_data.num_fromhost_data_slots; i++) - { - unifi_trace(card->ospriv, UDBG5, "fh data slot %d: %d\n", i, card->from_host_data[i].bd.data_length); - } - return CSR_RESULT_FAILURE; - } - } - - packed_sigptr = csptr->sigbuf; - - /* Fill in the slots with data */ - j = 0; - for (i = 0; i < UNIFI_MAX_DATA_REFERENCES; i++) - { - if (bulkdata[i].data_length == 0) - { - /* Zero-out the DATAREF in the signal */ - SET_PACKED_DATAREF_SLOT(packed_sigptr, i, 0); - SET_PACKED_DATAREF_LEN(packed_sigptr, i, 0); - } - else - { - /* - * Fill in the slot number in the SIGNAL structure but - * preserve the offset already in there - */ - SET_PACKED_DATAREF_SLOT(packed_sigptr, i, slots[j] | (((u16)packed_sigptr[SIZEOF_SIGNAL_HEADER + (i * SIZEOF_DATAREF) + 1]) << 8)); - SET_PACKED_DATAREF_LEN(packed_sigptr, i, bulkdata[i].data_length); - - /* Do not copy the data, just store the information to them */ - card->from_host_data[slots[j]].bd.os_data_ptr = bulkdata[i].os_data_ptr; - card->from_host_data[slots[j]].bd.os_net_buf_ptr = bulkdata[i].os_net_buf_ptr; - card->from_host_data[slots[j]].bd.data_length = bulkdata[i].data_length; - card->from_host_data[slots[j]].bd.net_buf_length = bulkdata[i].net_buf_length; - card->from_host_data[slots[j]].queue = queue; - - unifi_trace(card->ospriv, UDBG4, "CardWriteBulkData sig=0x%x, fh slot %d = %p\n", - GET_SIGNAL_ID(packed_sigptr), i, bulkdata[i].os_data_ptr); - - /* Sanity-check that the bulk data desc being assigned to the slot - * actually has a payload. - */ - if (!bulkdata[i].os_data_ptr) - { - unifi_error(card->ospriv, "Assign null os_data_ptr (len=%d) fh slot %d, i=%d, q=%d, sig=0x%x", - bulkdata[i].data_length, slots[j], i, queue, GET_SIGNAL_ID(packed_sigptr)); - } - - j++; - if (queue < UNIFI_NO_OF_TX_QS) - { - card->dynamic_slot_data.from_host_used_slots[queue]++; - } - } - } - - return CSR_RESULT_SUCCESS; -} /* CardWriteBulkData() */ - - -/* - * --------------------------------------------------------------------------- - * card_find_data_slot - * - * Dereference references to bulk data slots into pointers to real data. - * - * Arguments: - * card Pointer to the card struct. - * slot Slot number from a signal structure - * - * Returns: - * Pointer to entry in bulk_data_slot array. - * --------------------------------------------------------------------------- - */ -bulk_data_desc_t* card_find_data_slot(card_t *card, s16 slot) -{ - s16 sn; - bulk_data_desc_t *bd; - - sn = slot & 0x7FFF; - - /* ?? check sanity of slot number ?? */ - - if (slot & SLOT_DIR_TO_HOST) - { - bd = &card->to_host_data[sn]; - } - else - { - bd = &card->from_host_data[sn].bd; - } - - return bd; -} /* card_find_data_slot() */ - - -/* - * --------------------------------------------------------------------------- - * firmware_present_in_flash - * - * Probe for external Flash that looks like it might contain firmware. - * - * If Flash is not present, reads always return 0x0008. - * If Flash is present, but empty, reads return 0xFFFF. - * Anything else is considered to be firmware. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * CSR_RESULT_SUCCESS firmware is present in ROM or flash - * CSR_WIFI_HIP_RESULT_NOT_FOUND firmware is not present in ROM or flash - * CSR_WIFI_HIP_RESULT_NO_DEVICE if the card was ejected - * CSR_RESULT_FAILURE if an SDIO error occurred - * --------------------------------------------------------------------------- - */ -static CsrResult firmware_present_in_flash(card_t *card) -{ - CsrResult r; - u16 m1, m5; - - if (ChipHelper_HasRom(card->helper)) - { - return CSR_RESULT_SUCCESS; - } - if (!ChipHelper_HasFlash(card->helper)) - { - return CSR_WIFI_HIP_RESULT_NOT_FOUND; - } - - /* - * Examine the Flash locations that are the power-on default reset - * vectors of the XAP processors. - * These are words 1 and 5 in Flash. - */ - r = unifi_card_read16(card, UNIFI_MAKE_GP(EXT_FLASH, 2), &m1); - if (r != CSR_RESULT_SUCCESS) - { - return r; - } - - r = unifi_card_read16(card, UNIFI_MAKE_GP(EXT_FLASH, 10), &m5); - if (r != CSR_RESULT_SUCCESS) - { - return r; - } - - /* Check for uninitialised/missing flash */ - if ((m1 == 0x0008) || (m1 == 0xFFFF) || - (m1 == 0x0004) || (m5 == 0x0004) || - (m5 == 0x0008) || (m5 == 0xFFFF)) - { - return CSR_WIFI_HIP_RESULT_NOT_FOUND; - } - - return CSR_RESULT_SUCCESS; -} /* firmware_present_in_flash() */ - - -/* - * --------------------------------------------------------------------------- - * bootstrap_chip_hw - * - * Perform chip specific magic to "Get It Working" TM. This will - * increase speed of PLLs in analogue and maybe enable some - * on-chip regulators. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -static void bootstrap_chip_hw(card_t *card) -{ - const struct chip_helper_init_values *vals; - u32 i, len; - void *sdio = card->sdio_if; - CsrResult csrResult; - - len = ChipHelper_ClockStartupSequence(card->helper, &vals); - if (len != 0) - { - for (i = 0; i < len; i++) - { - csrResult = CsrSdioWrite16(sdio, vals[i].addr * 2, vals[i].value); - if (csrResult != CSR_RESULT_SUCCESS) - { - unifi_warning(card->ospriv, "Failed to write bootstrap value %d\n", i); - /* Might not be fatal */ - } - - CsrThreadSleep(1); - } - } -} /* bootstrap_chip_hw() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_card_stop_processor - * - * Stop the UniFi XAP processors. - * - * Arguments: - * card Pointer to card struct - * which One of UNIFI_PROC_MAC, UNIFI_PROC_PHY, UNIFI_PROC_BOTH - * - * Returns: - * CSR_RESULT_SUCCESS if successful, or CSR error code - * --------------------------------------------------------------------------- - */ -CsrResult unifi_card_stop_processor(card_t *card, enum unifi_dbg_processors_select which) -{ - CsrResult r = CSR_RESULT_SUCCESS; - u8 status; - s16 retry = 100; - - while (retry--) - { - /* Select both XAPs */ - r = unifi_set_proc_select(card, which); - if (r != CSR_RESULT_SUCCESS) - { - break; - } - - /* Stop processors */ - r = unifi_write_direct16(card, ChipHelper_DBG_EMU_CMD(card->helper) * 2, 2); - if (r != CSR_RESULT_SUCCESS) - { - break; - } - - /* Read status */ - r = unifi_read_direct_8_or_16(card, - ChipHelper_DBG_HOST_STOP_STATUS(card->helper) * 2, - &status); - if (r != CSR_RESULT_SUCCESS) - { - break; - } - - if ((status & 1) == 1) - { - /* Success! */ - return CSR_RESULT_SUCCESS; - } - - /* Processors didn't stop, try again */ - } - - if (r != CSR_RESULT_SUCCESS) - { - /* An SDIO error occurred */ - unifi_error(card->ospriv, "Failed to stop processors: SDIO error\n"); - } - else - { - /* If we reach here, we didn't the status in time. */ - unifi_error(card->ospriv, "Failed to stop processors: timeout waiting for stopped status\n"); - r = CSR_RESULT_FAILURE; - } - - return r; -} /* unifi_card_stop_processor() */ - - -/* - * --------------------------------------------------------------------------- - * card_start_processor - * - * Start the UniFi XAP processors. - * - * Arguments: - * card Pointer to card struct - * which One of UNIFI_PROC_MAC, UNIFI_PROC_PHY, UNIFI_PROC_BOTH - * - * Returns: - * CSR_RESULT_SUCCESS or CSR error code - * --------------------------------------------------------------------------- - */ -CsrResult card_start_processor(card_t *card, enum unifi_dbg_processors_select which) -{ - CsrResult r; - - /* Select both XAPs */ - r = unifi_set_proc_select(card, which); - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "unifi_set_proc_select failed: %d.\n", r); - return r; - } - - - r = unifi_write_direct_8_or_16(card, - ChipHelper_DBG_EMU_CMD(card->helper) * 2, 8); - if (r != CSR_RESULT_SUCCESS) - { - return r; - } - - r = unifi_write_direct_8_or_16(card, - ChipHelper_DBG_EMU_CMD(card->helper) * 2, 0); - if (r != CSR_RESULT_SUCCESS) - { - return r; - } - - return CSR_RESULT_SUCCESS; -} /* card_start_processor() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_set_interrupt_mode - * - * Configure the interrupt processing mode used by the HIP - * - * Arguments: - * card Pointer to card struct - * mode Interrupt mode to apply - * - * Returns: - * None - * --------------------------------------------------------------------------- - */ -void unifi_set_interrupt_mode(card_t *card, u32 mode) -{ - if (mode == CSR_WIFI_INTMODE_RUN_BH_ONCE) - { - unifi_info(card->ospriv, "Scheduled interrupt mode"); - } - card->intmode = mode; -} /* unifi_set_interrupt_mode() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_start_processors - * - * Start all UniFi XAP processors. - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * CSR_RESULT_SUCCESS on success, CSR error code on error - * --------------------------------------------------------------------------- - */ -CsrResult unifi_start_processors(card_t *card) -{ - return card_start_processor(card, UNIFI_PROC_BOTH); -} /* unifi_start_processors() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_request_max_sdio_clock - * - * Requests that the maximum SDIO clock rate is set at the next suitable - * opportunity (e.g. when the BH next runs, so as not to interfere with - * any current operation). - * - * Arguments: - * card Pointer to card struct - * - * Returns: - * None - * --------------------------------------------------------------------------- - */ -void unifi_request_max_sdio_clock(card_t *card) -{ - card->request_max_clock = 1; -} /* unifi_request_max_sdio_clock() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_set_host_state - * - * Set the host deep-sleep state. - * - * If transitioning to TORPID, the SDIO driver will be notified - * that the SD bus will be unused (idle) and conversely, when - * transitioning from TORPID that the bus will be used (active). - * - * Arguments: - * card Pointer to card struct - * state New deep-sleep state. - * - * Returns: - * CSR_RESULT_SUCCESS on success - * CSR_WIFI_HIP_RESULT_NO_DEVICE if the card was ejected - * CSR_RESULT_FAILURE if an SDIO error occurred - * - * Notes: - * We need to reduce the SDIO clock speed before trying to wake up the - * chip. Actually, in the implementation below we reduce the clock speed - * not just before we try to wake up the chip, but when we put the chip to - * deep sleep. This means that if the f/w wakes up on its' own, we waste - * a reduce/increace cycle. However, trying to eliminate this overhead is - * proved difficult, as the current state machine in the HIP lib does at - * least a CMD52 to disable the interrupts before we configure the host - * state. - * --------------------------------------------------------------------------- - */ -CsrResult unifi_set_host_state(card_t *card, enum unifi_host_state state) -{ - CsrResult r = CSR_RESULT_SUCCESS; - CsrResult csrResult; - static const char *const states[] = { - "AWAKE", "DROWSY", "TORPID" - }; - static const u8 state_csr_host_wakeup[] = { - 1, 3, 0 - }; - static const u8 state_io_abort[] = { - 0, 2, 3 - }; - - unifi_trace(card->ospriv, UDBG4, "State %s to %s\n", - states[card->host_state], states[state]); - - if (card->host_state == UNIFI_HOST_STATE_TORPID) - { - CsrSdioFunctionActive(card->sdio_if); - } - - /* Write the new state to UniFi. */ - if (card->chip_id > SDIO_CARD_ID_UNIFI_2) - { - r = sdio_write_f0(card, SDIO_CSR_HOST_WAKEUP, - (u8)((card->function << 4) | state_csr_host_wakeup[state])); - } - else - { - r = sdio_write_f0(card, SDIO_IO_ABORT, state_io_abort[state]); - } - - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to write UniFi deep sleep state\n"); - } - else - { - /* - * If the chip was in state TORPID then we can now increase - * the maximum bus clock speed. - */ - if (card->host_state == UNIFI_HOST_STATE_TORPID) - { - csrResult = CsrSdioMaxBusClockFrequencySet(card->sdio_if, - UNIFI_SDIO_CLOCK_MAX_HZ); - r = ConvertCsrSdioToCsrHipResult(card, csrResult); - /* Non-fatal error */ - if (r != CSR_RESULT_SUCCESS && r != CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - unifi_warning(card->ospriv, - "Failed to increase the SDIO clock speed\n"); - } - else - { - card->sdio_clock_speed = UNIFI_SDIO_CLOCK_MAX_HZ; - } - } - - /* - * Cache the current state in the card structure to avoid - * unnecessary SDIO reads. - */ - card->host_state = state; - - if (state == UNIFI_HOST_STATE_TORPID) - { - /* - * If the chip is now in state TORPID then we must now decrease - * the maximum bus clock speed. - */ - csrResult = CsrSdioMaxBusClockFrequencySet(card->sdio_if, - UNIFI_SDIO_CLOCK_SAFE_HZ); - r = ConvertCsrSdioToCsrHipResult(card, csrResult); - if (r != CSR_RESULT_SUCCESS && r != CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - unifi_warning(card->ospriv, - "Failed to decrease the SDIO clock speed\n"); - } - else - { - card->sdio_clock_speed = UNIFI_SDIO_CLOCK_SAFE_HZ; - } - CsrSdioFunctionIdle(card->sdio_if); - } - } - - return r; -} /* unifi_set_host_state() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_card_info - * - * Update the card information data structure - * - * Arguments: - * card Pointer to card struct - * card_info Pointer to info structure to update - * - * Returns: - * None - * --------------------------------------------------------------------------- - */ -void unifi_card_info(card_t *card, card_info_t *card_info) -{ - card_info->chip_id = card->chip_id; - card_info->chip_version = card->chip_version; - card_info->fw_build = card->build_id; - card_info->fw_hip_version = card->config_data.version; - card_info->sdio_block_size = card->sdio_io_block_size; -} /* unifi_card_info() */ - - -/* - * --------------------------------------------------------------------------- - * unifi_check_io_status - * - * Check UniFi for spontaneous reset and pending interrupt. - * - * Arguments: - * card Pointer to card struct - * status Pointer to location to write chip status: - * 0 if UniFi is running, and no interrupt pending - * 1 if UniFi has spontaneously reset - * 2 if there is a pending interrupt - * Returns: - * CSR_RESULT_SUCCESS if OK, or CSR error - * --------------------------------------------------------------------------- - */ -CsrResult unifi_check_io_status(card_t *card, s32 *status) -{ - u8 io_en; - CsrResult r; - u8 pending; - - *status = 0; - - r = sdio_read_f0(card, SDIO_IO_ENABLE, &io_en); - if (r == CSR_WIFI_HIP_RESULT_NO_DEVICE) - { - return r; - } - if (r != CSR_RESULT_SUCCESS) - { - unifi_error(card->ospriv, "Failed to read SDIO_IO_ENABLE to check for spontaneous reset\n"); - return r; - } - - if ((io_en & (1 << card->function)) == 0) - { - s32 fw_count; - *status = 1; - unifi_error(card->ospriv, "UniFi has spontaneously reset.\n"); - - /* - * These reads are very likely to fail. We want to know if the function is really - * disabled or the SDIO driver just returns rubbish. - */ - fw_count = unifi_read_shared_count(card, card->sdio_ctrl_addr + 4); - if (fw_count < 0) - { - unifi_error(card->ospriv, "Failed to read to-host sig written count\n"); - } - else - { - unifi_error(card->ospriv, "thsw: %u (driver thinks is %u)\n", - fw_count, card->to_host_signals_w); - } - fw_count = unifi_read_shared_count(card, card->sdio_ctrl_addr + 2); - if (fw_count < 0) - { - unifi_error(card->ospriv, "Failed to read from-host sig read count\n"); - } - else - { - unifi_error(card->ospriv, "fhsr: %u (driver thinks is %u)\n", - fw_count, card->from_host_signals_r); - } - - return r; - } - - unifi_info(card->ospriv, "UniFi function %d is enabled.\n", card->function); - - /* See if we missed an SDIO interrupt */ - r = CardPendingInt(card, &pending); - if (pending) - { - unifi_error(card->ospriv, "There is an unhandled pending interrupt.\n"); - *status = 2; - return r; - } - - return r; -} /* unifi_check_io_status() */ - - -void unifi_get_hip_qos_info(card_t *card, unifi_HipQosInfo *hipqosinfo) -{ - s32 count_fhr; - s16 t; - u32 occupied_fh; - - q_t *sigq; - u16 nslots, i; - - memset(hipqosinfo, 0, sizeof(unifi_HipQosInfo)); - - nslots = card->config_data.num_fromhost_data_slots; - - for (i = 0; i < nslots; i++) - { - if (card->from_host_data[i].bd.data_length == 0) - { - hipqosinfo->free_fh_bulkdata_slots++; - } - } - - for (i = 0; i < UNIFI_NO_OF_TX_QS; i++) - { - sigq = &card->fh_traffic_queue[i]; - t = sigq->q_wr_ptr - sigq->q_rd_ptr; - if (t < 0) - { - t += sigq->q_length; - } - hipqosinfo->free_fh_sig_queue_slots[i] = (sigq->q_length - t) - 1; - } - - count_fhr = unifi_read_shared_count(card, card->sdio_ctrl_addr + 2); - if (count_fhr < 0) - { - unifi_error(card->ospriv, "Failed to read from-host sig read count - %d\n", count_fhr); - hipqosinfo->free_fh_fw_slots = 0xfa; - return; - } - - occupied_fh = (card->from_host_signals_w - count_fhr) % 128; - - hipqosinfo->free_fh_fw_slots = (u16)(card->config_data.num_fromhost_sig_frags - occupied_fh); -} - - - -CsrResult ConvertCsrSdioToCsrHipResult(card_t *card, CsrResult csrResult) -{ - CsrResult r = CSR_RESULT_FAILURE; - - switch (csrResult) - { - case CSR_RESULT_SUCCESS: - r = CSR_RESULT_SUCCESS; - break; - /* Timeout errors */ - case CSR_SDIO_RESULT_TIMEOUT: - /* Integrity errors */ - case CSR_SDIO_RESULT_CRC_ERROR: - r = CSR_RESULT_FAILURE; - break; - case CSR_SDIO_RESULT_NO_DEVICE: - r = CSR_WIFI_HIP_RESULT_NO_DEVICE; - break; - case CSR_SDIO_RESULT_INVALID_VALUE: - r = CSR_WIFI_HIP_RESULT_INVALID_VALUE; - break; - case CSR_RESULT_FAILURE: - r = CSR_RESULT_FAILURE; - break; - default: - unifi_warning(card->ospriv, "Unrecognised csrResult error code: %d\n", csrResult); - break; - } - - return r; -} /* ConvertCsrSdioToCsrHipResult() */ - - |