by Kalle Valo

[permalink] [raw]

Subject: [PATCH v2 15/23] ath6kl: add init.c

Signed-off-by: Kalle Valo <[email protected]>
---
drivers/net/wireless/ath/ath6kl/init.c | 1312 ++++++++++++++++++++++++++++++++
1 files changed, 1312 insertions(+), 0 deletions(-)
create mode 100644 drivers/net/wireless/ath/ath6kl/init.c

diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c
new file mode 100644
index 0000000..6094e43
--- /dev/null
+++ b/drivers/net/wireless/ath/ath6kl/init.c
@@ -0,0 +1,1312 @@
+
+/*
+ * Copyright (c) 2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/mmc/sdio_func.h>
+#include "core.h"
+#include "cfg80211.h"
+#include "target.h"
+#include "debug.h"
+#include "hif-ops.h"
+
+unsigned int debug_mask;
+
+module_param(debug_mask, uint, 0644);
+
+/*
+ * Include definitions here that can be used to tune the WLAN module
+ * behavior. Different customers can tune the behavior as per their needs,
+ * here.
+ */
+
+/*
+ * This configuration item enable/disable keepalive support.
+ * Keepalive support: In the absence of any data traffic to AP, null
+ * frames will be sent to the AP at periodic interval, to keep the association
+ * active. This configuration item defines the periodic interval.
+ * Use value of zero to disable keepalive support
+ * Default: 60 seconds
+ */
+#define WLAN_CONFIG_KEEP_ALIVE_INTERVAL 60
+
+/*
+ * This configuration item sets the value of disconnect timeout
+ * Firmware delays sending the disconnec event to the host for this
+ * timeout after is gets disconnected from the current AP.
+ * If the firmware successly roams within the disconnect timeout
+ * it sends a new connect event
+ */
+#define WLAN_CONFIG_DISCONNECT_TIMEOUT 10
+
+#define CONFIG_AR600x_DEBUG_UART_TX_PIN 8
+
+enum addr_type {
+ DATASET_PATCH_ADDR,
+ APP_LOAD_ADDR,
+ APP_START_OVERRIDE_ADDR,
+};
+
+#define ATH6KL_DATA_OFFSET 64
+struct sk_buff *ath6kl_buf_alloc(int size)
+{
+ struct sk_buff *skb;
+ u16 reserved;
+
+ /* Add chacheline space at front and back of buffer */
+ reserved = (2 * L1_CACHE_BYTES) + ATH6KL_DATA_OFFSET +
+ sizeof(struct htc_packet);
+ skb = dev_alloc_skb(size + reserved);
+
+ if (skb)
+ skb_reserve(skb, reserved - L1_CACHE_BYTES);
+ return skb;
+}
+
+void ath6kl_init_profile_info(struct ath6kl *ar)
+{
+ ar->ssid_len = 0;
+ memset(ar->ssid, 0, sizeof(ar->ssid));
+
+ ar->dot11_auth_mode = OPEN_AUTH;
+ ar->auth_mode = NONE_AUTH;
+ ar->prwise_crypto = NONE_CRYPT;
+ ar->prwise_crypto_len = 0;
+ ar->grp_crypto = NONE_CRYPT;
+ ar->grp_crpto_len = 0;
+ memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list));
+ memset(ar->req_bssid, 0, sizeof(ar->req_bssid));
+ memset(ar->bssid, 0, sizeof(ar->bssid));
+ ar->bss_ch = 0;
+ ar->nw_type = ar->next_mode = INFRA_NETWORK;
+}
+
+static u8 ath6kl_get_fw_iftype(struct ath6kl *ar)
+{
+ switch (ar->nw_type) {
+ case INFRA_NETWORK:
+ return HI_OPTION_FW_MODE_BSS_STA;
+ case ADHOC_NETWORK:
+ return HI_OPTION_FW_MODE_IBSS;
+ case AP_NETWORK:
+ return HI_OPTION_FW_MODE_AP;
+ default:
+ ath6kl_err("Unsupported interface type :%d\n", ar->nw_type);
+ return 0xff;
+ }
+}
+
+static inline u32 ath6kl_get_hi_item_addr(struct ath6kl *ar,
+ u32 item_offset)
+{
+ u32 addr = 0;
+
+ if (ar->target_type == TARGET_TYPE_AR6003)
+ addr = ATH6KL_HI_START_ADDR + item_offset;
+
+ return addr;
+}
+
+static int ath6kl_set_host_app_area(struct ath6kl *ar)
+{
+ u32 address, data;
+ struct host_app_area host_app_area;
+
+ /* Fetch the address of the host_app_area_s
+ * instance in the host interest area */
+ address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest));
+ address = TARG_VTOP(address);
+
+ if (ath6kl_read_reg_diag(ar, &address, &data))
+ return -EIO;
+
+ address = TARG_VTOP(data);
+ host_app_area.wmi_protocol_ver = WMI_PROTOCOL_VERSION;
+ if (ath6kl_access_datadiag(ar, address,
+ (u8 *)&host_app_area,
+ sizeof(struct host_app_area), false))
+ return -EIO;
+
+ return 0;
+}
+
+static inline void set_ac2_ep_map(struct ath6kl *ar,
+ u8 ac,
+ enum htc_endpoint_id ep)
+{
+ ar->ac2ep_map[ac] = ep;
+ ar->ep2ac_map[ep] = ac;
+}
+
+/* connect to a service */
+static int ath6kl_connectservice(struct ath6kl *ar,
+ struct htc_service_connect_req *con_req,
+ char *desc)
+{
+ int status;
+ struct htc_service_connect_resp response;
+
+ memset(&response, 0, sizeof(response));
+
+ status = htc_conn_service(ar->htc_target, con_req, &response);
+ if (status) {
+ ath6kl_err("%s: failed to connect to %s service status:%d\n",
+ __func__, desc, status);
+ return status;
+ }
+
+ switch (con_req->svc_id) {
+ case WMI_CONTROL_SVC:
+ if (test_bit(WMI_ENABLED, &ar->flag))
+ ath6kl_wmi_set_control_ep(ar->wmi, response.endpoint);
+ ar->ctrl_ep = response.endpoint;
+ break;
+ case WMI_DATA_BE_SVC:
+ set_ac2_ep_map(ar, WMM_AC_BE, response.endpoint);
+ break;
+ case WMI_DATA_BK_SVC:
+ set_ac2_ep_map(ar, WMM_AC_BK, response.endpoint);
+ break;
+ case WMI_DATA_VI_SVC:
+ set_ac2_ep_map(ar, WMM_AC_VI, response.endpoint);
+ break;
+ case WMI_DATA_VO_SVC:
+ set_ac2_ep_map(ar, WMM_AC_VO, response.endpoint);
+ break;
+ default:
+ ath6kl_err("%s: service id is not mapped %d\n",
+ __func__, con_req->svc_id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ath6kl_init_service_ep(struct ath6kl *ar)
+{
+ struct htc_service_connect_req connect;
+
+ memset(&connect, 0, sizeof(connect));
+
+ /* these fields are the same for all service endpoints */
+ connect.ep_cb.rx = ath6kl_rx;
+ connect.ep_cb.rx_refill = ath6kl_rx_refill;
+ connect.ep_cb.tx_full = ath6kl_tx_queue_full;
+
+ /*
+ * Set the max queue depth so that our ath6kl_tx_queue_full handler
+ * gets called.
+ */
+ connect.max_txq_depth = MAX_DEFAULT_SEND_QUEUE_DEPTH;
+ connect.ep_cb.rx_refill_thresh = ATH6KL_MAX_RX_BUFFERS / 4;
+ if (!connect.ep_cb.rx_refill_thresh)
+ connect.ep_cb.rx_refill_thresh++;
+
+ /* connect to control service */
+ connect.svc_id = WMI_CONTROL_SVC;
+ if (ath6kl_connectservice(ar, &connect, "WMI CONTROL"))
+ return -EIO;
+
+ connect.flags |= HTC_FLGS_TX_BNDL_PAD_EN;
+
+ /*
+ * Limit the HTC message size on the send path, although e can
+ * receive A-MSDU frames of 4K, we will only send ethernet-sized
+ * (802.3) frames on the send path.
+ */
+ connect.max_rxmsg_sz = WMI_MAX_TX_DATA_FRAME_LENGTH;
+
+ /*
+ * To reduce the amount of committed memory for larger A_MSDU
+ * frames, use the recv-alloc threshold mechanism for larger
+ * packets.
+ */
+ connect.ep_cb.rx_alloc_thresh = ATH6KL_BUFFER_SIZE;
+ connect.ep_cb.rx_allocthresh = ath6kl_alloc_amsdu_rxbuf;
+
+ /*
+ * For the remaining data services set the connection flag to
+ * reduce dribbling, if configured to do so.
+ */
+ connect.conn_flags |= HTC_CONN_FLGS_REDUCE_CRED_DRIB;
+ connect.conn_flags &= ~HTC_CONN_FLGS_THRESH_MASK;
+ connect.conn_flags |= HTC_CONN_FLGS_THRESH_LVL_HALF;
+
+ connect.svc_id = WMI_DATA_BE_SVC;
+
+ if (ath6kl_connectservice(ar, &connect, "WMI DATA BE"))
+ return -EIO;
+
+ /* connect to back-ground map this to WMI LOW_PRI */
+ connect.svc_id = WMI_DATA_BK_SVC;
+ if (ath6kl_connectservice(ar, &connect, "WMI DATA BK"))
+ return -EIO;
+
+ /* connect to Video service, map this to to HI PRI */
+ connect.svc_id = WMI_DATA_VI_SVC;
+ if (ath6kl_connectservice(ar, &connect, "WMI DATA VI"))
+ return -EIO;
+
+ /*
+ * Connect to VO service, this is currently not mapped to a WMI
+ * priority stream due to historical reasons. WMI originally
+ * defined 3 priorities over 3 mailboxes We can change this when
+ * WMI is reworked so that priorities are not dependent on
+ * mailboxes.
+ */
+ connect.svc_id = WMI_DATA_VO_SVC;
+ if (ath6kl_connectservice(ar, &connect, "WMI DATA VO"))
+ return -EIO;
+
+ return 0;
+}
+
+static void ath6kl_init_control_info(struct ath6kl *ar)
+{
+ u8 ctr;
+
+ clear_bit(WMI_ENABLED, &ar->flag);
+ ath6kl_init_profile_info(ar);
+ ar->def_txkey_index = 0;
+ memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list));
+ ar->ch_hint = 0;
+ ar->listen_intvl_t = A_DEFAULT_LISTEN_INTERVAL;
+ ar->listen_intvl_b = 0;
+ ar->tx_pwr = 0;
+ clear_bit(SKIP_SCAN, &ar->flag);
+ set_bit(WMM_ENABLED, &ar->flag);
+ ar->intra_bss = 1;
+ memset(&ar->sc_params, 0, sizeof(ar->sc_params));
+ ar->sc_params.short_scan_ratio = WMI_SHORTSCANRATIO_DEFAULT;
+ ar->sc_params.scan_ctrl_flags = DEFAULT_SCAN_CTRL_FLAGS;
+
+ memset((u8 *)ar->sta_list, 0,
+ AP_MAX_NUM_STA * sizeof(struct ath6kl_sta));
+
+ spin_lock_init(&ar->mcastpsq_lock);
+
+ /* Init the PS queues */
+ for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
+ spin_lock_init(&ar->sta_list[ctr].psq_lock);
+ skb_queue_head_init(&ar->sta_list[ctr].psq);
+ }
+
+ skb_queue_head_init(&ar->mcastpsq);
+
+ memcpy(ar->ap_country_code, DEF_AP_COUNTRY_CODE, 3);
+}
+
+/*
+ * Set HTC/Mbox operational parameters, this can only be called when the
+ * target is in the BMI phase.
+ */
+static int ath6kl_set_htc_params(struct ath6kl *ar, u32 mbox_isr_yield_val,
+ u8 htc_ctrl_buf)
+{
+ int status;
+ u32 blk_size;
+
+ blk_size = ar->mbox_info.block_size;
+
+ if (htc_ctrl_buf)
+ blk_size |= ((u32)htc_ctrl_buf) << 16;
+
+ /* set the host interest area for the block size */
+ status = ath6kl_bmi_write(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_mbox_io_block_sz)),
+ (u8 *)&blk_size,
+ 4);
+ if (status) {
+ ath6kl_err("%s: bmi_write_memory for IO block size failed\n",
+ __func__);
+ goto out;
+ }
+
+ ath6kl_dbg(ATH6KL_DBG_TRC, "block size set: %d (target addr:0x%X)\n",
+ blk_size,
+ ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz)));
+
+ if (mbox_isr_yield_val) {
+ /* set the host interest area for the mbox ISR yield limit */
+ status = ath6kl_bmi_write(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_mbox_isr_yield_limit)),
+ (u8 *)&mbox_isr_yield_val,
+ 4);
+ if (status) {
+ ath6kl_err("%s: bmi_write_memory for yield "
+ "limit failed\n",
+ __func__);
+ goto out;
+ }
+ }
+
+out:
+ return status;
+}
+
+#define REG_DUMP_COUNT_AR6003 60
+#define REGISTER_DUMP_LEN_MAX 60
+
+static void ath6kl_dump_target_assert_info(struct ath6kl *ar)
+{
+ u32 address;
+ u32 regdump_loc = 0;
+ int status;
+ u32 regdump_val[REGISTER_DUMP_LEN_MAX];
+ u32 i;
+
+ if (ar->target_type != TARGET_TYPE_AR6003)
+ return;
+
+ /* the reg dump pointer is copied to the host interest area */
+ address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_failure_state));
+ address = TARG_VTOP(address);
+
+ /* read RAM location through diagnostic window */
+ status = ath6kl_read_reg_diag(ar, &address, &regdump_loc);
+
+ if (status || !regdump_loc) {
+ ath6kl_err("%s: failed to get ptr to register dump area\n",
+ __func__);
+ return;
+ }
+
+ ath6kl_dbg(ATH6KL_DBG_TRC, "location of register dump data: 0x%X\n",
+ regdump_loc);
+
+ regdump_loc = TARG_VTOP(regdump_loc);
+
+ /* fetch register dump data */
+ status = ath6kl_access_datadiag(ar,
+ regdump_loc,
+ (u8 *)&regdump_val[0],
+ REG_DUMP_COUNT_AR6003 * (sizeof(u32)),
+ true);
+
+ if (status) {
+ ath6kl_err("failed to get register dump\n");
+ return;
+ }
+ ath6kl_dbg(ATH6KL_DBG_TRC, "Register Dump:\n");
+
+ for (i = 0; i < REG_DUMP_COUNT_AR6003; i++)
+ ath6kl_dbg(ATH6KL_DBG_TRC, " %d : 0x%8.8X\n",
+ i, regdump_val[i]);
+
+}
+
+void ath6kl_target_failure(struct ath6kl *ar)
+{
+ ath6kl_err("%s: target asserted\n", __func__);
+
+ /* try dumping target assertion information (if any) */
+ ath6kl_dump_target_assert_info(ar);
+
+}
+
+static int ath6kl_target_config_wlan_params(struct ath6kl *ar)
+{
+ int status = 0;
+
+ /*
+ * Configure the device for rx dot11 header rules. "0,0" are the
+ * default values. Required if checksum offload is needed. Set
+ * RxMetaVersion to 2.
+ */
+ if (ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi,
+ ar->rx_meta_ver, 0, 0)) {
+ ath6kl_err("%s: unable to set the rx frame format\n", __func__);
+ status = -EIO;
+ }
+
+ if (ar->conf_flags & ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN)
+ if ((ath6kl_wmi_pmparams_cmd(ar->wmi, 0, 1, 0, 0, 1,
+ IGNORE_POWER_SAVE_FAIL_EVENT_DURING_SCAN)) != 0) {
+ ath6kl_err("%s: unable to set power save fail event policy\n",
+ __func__);
+ status = -EIO;
+ }
+
+ if (!(ar->conf_flags & ATH6KL_CONF_IGNORE_ERP_BARKER))
+ if ((ath6kl_wmi_set_lpreamble_cmd(ar->wmi, 0,
+ WMI_DONOT_IGNORE_BARKER_IN_ERP)) != 0) {
+ ath6kl_err("%s: unable to set barker preamble policy\n",
+ __func__);
+ status = -EIO;
+ }
+
+ if (ath6kl_wmi_set_keepalive_cmd(ar->wmi,
+ WLAN_CONFIG_KEEP_ALIVE_INTERVAL)) {
+ ath6kl_err("%s: unable to set keep alive interval\n",
+ __func__);
+ status = -EIO;
+ }
+
+ if (ath6kl_wmi_disctimeout_cmd(ar->wmi,
+ WLAN_CONFIG_DISCONNECT_TIMEOUT)) {
+ ath6kl_err("%s: unable to set disconnect timeout\n",
+ __func__);
+ status = -EIO;
+ }
+
+ if (!(ar->conf_flags & ATH6KL_CONF_ENABLE_TX_BURST))
+ if (ath6kl_wmi_set_wmm_txop(ar->wmi, WMI_TXOP_DISABLED)) {
+ ath6kl_err("%s: unable to set txop bursting\n",
+ __func__);
+ status = -EIO;
+ }
+
+ return status;
+}
+
+int ath6kl_configure_target(struct ath6kl *ar)
+{
+ u32 param, ram_reserved_size;
+ u8 fw_iftype;
+
+ fw_iftype = ath6kl_get_fw_iftype(ar);
+ if (fw_iftype == 0xff)
+ return -EINVAL;
+
+ /* Tell target which HTC version it is used*/
+ param = HTC_PROTOCOL_VERSION;
+ if (ath6kl_bmi_write(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_app_host_interest)),
+ (u8 *)&param, 4) != 0) {
+ ath6kl_err("%s: bmi_write_memory for htc version failed\n",
+ __func__);
+ return -EIO;
+ }
+
+ /* set the firmware mode to STA/IBSS/AP */
+ param = 0;
+
+ if (ath6kl_bmi_read(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_option_flag)),
+ (u8 *)&param, 4) != 0) {
+ ath6kl_err("%s: bmi_read_memory for setting fwmode failed\n",
+ __func__);
+ return -EIO;
+ }
+
+ param |= (1 << HI_OPTION_NUM_DEV_SHIFT);
+ param |= (fw_iftype << HI_OPTION_FW_MODE_SHIFT);
+ param |= (0 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
+ param |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
+
+ if (ath6kl_bmi_write(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_option_flag)),
+ (u8 *)&param,
+ 4) != 0) {
+ ath6kl_err("%s: bmi_write_memory for setting fwmode failed\n",
+ __func__);
+ return -EIO;
+ }
+
+ ath6kl_dbg(ATH6KL_DBG_TRC, "firmware mode set\n");
+
+ /*
+ * Hardcode the address use for the extended board data
+ * Ideally this should be pre-allocate by the OS at boot time
+ * But since it is a new feature and board data is loaded
+ * at init time, we have to workaround this from host.
+ * It is difficult to patch the firmware boot code,
+ * but possible in theory.
+ */
+
+ if (ar->target_type == TARGET_TYPE_AR6003) {
+ if (ar->version.target_ver == AR6003_REV2_VERSION) {
+ param = AR6003_REV2_BOARD_EXT_DATA_ADDRESS;
+ ram_reserved_size = AR6003_REV2_RAM_RESERVE_SIZE;
+ } else {
+ param = AR6003_REV3_BOARD_EXT_DATA_ADDRESS;
+ ram_reserved_size = AR6003_REV3_RAM_RESERVE_SIZE;
+ }
+
+ if (ath6kl_bmi_write(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_board_ext_data)),
+ (u8 *)&param, 4) != 0) {
+ ath6kl_err("%s: bmi_write_memory for hi_board_ext_data failed\n",
+ __func__);
+ return -EIO;
+ }
+ if (ath6kl_bmi_write(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_end_ram_reserve_sz)),
+ (u8 *)&ram_reserved_size, 4) != 0) {
+ ath6kl_err("%s: bmi_write_memory for hi_end_ram_reserve_sz failed\n",
+ __func__);
+ return -EIO;
+ }
+ }
+
+ /* set the block size for the target */
+ if (ath6kl_set_htc_params(ar, MBOX_YIELD_LIMIT, 0))
+ /* use default number of control buffers */
+ return -EIO;
+
+ return 0;
+}
+
+struct ath6kl *ath6kl_core_alloc(struct device *sdev)
+{
+ struct net_device *dev;
+ struct ath6kl *ar;
+ struct wireless_dev *wdev;
+
+ wdev = ath6kl_cfg80211_init(sdev);
+ if (!wdev) {
+ ath6kl_err("%s: ath6kl_cfg80211_init failed\n", __func__);
+ return NULL;
+ }
+
+ ar = wdev_priv(wdev);
+ ar->dev = sdev;
+ ar->wdev = wdev;
+ wdev->iftype = NL80211_IFTYPE_STATION;
+
+ dev = alloc_netdev(0, "wlan%d", ether_setup);
+ if (!dev) {
+ ath6kl_err("%s: no memory for network device instance\n",
+ __func__);
+ ath6kl_cfg80211_deinit(ar);
+ return NULL;
+ }
+
+ dev->ieee80211_ptr = wdev;
+ SET_NETDEV_DEV(dev, wiphy_dev(wdev->wiphy));
+ wdev->netdev = dev;
+ ar->sme_state = SME_DISCONNECTED;
+ ar->auto_auth_stage = AUTH_IDLE;
+
+ init_netdev(dev);
+
+ ar->net_dev = dev;
+ ar->wlan_state = WLAN_ENABLED;
+
+ ar->wlan_pwr_state = WLAN_POWER_STATE_ON;
+
+ spin_lock_init(&ar->lock);
+
+ ath6kl_init_control_info(ar);
+ init_waitqueue_head(&ar->event_wq);
+ sema_init(&ar->sem, 1);
+ clear_bit(DESTROY_IN_PROGRESS, &ar->flag);
+
+ INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue);
+
+ setup_timer(&ar->disconnect_timer, disconnect_timer_handler,
+ (unsigned long) dev);
+
+ return ar;
+}
+
+int ath6kl_unavail_ev(struct ath6kl *ar)
+{
+ ath6kl_destroy(ar->net_dev, 1);
+
+ return 0;
+}
+
+/* firmware upload */
+static u32 ath6kl_get_load_address(u32 target_ver, enum addr_type type)
+{
+ WARN_ON(target_ver != AR6003_REV2_VERSION &&
+ target_ver != AR6003_REV3_VERSION);
+
+ switch (type) {
+ case DATASET_PATCH_ADDR:
+ return (target_ver == AR6003_REV2_VERSION) ?
+ AR6003_REV2_DATASET_PATCH_ADDRESS :
+ AR6003_REV3_DATASET_PATCH_ADDRESS;
+ case APP_LOAD_ADDR:
+ return (target_ver == AR6003_REV2_VERSION) ?
+ AR6003_REV2_APP_LOAD_ADDRESS :
+ 0x1234;
+ case APP_START_OVERRIDE_ADDR:
+ return (target_ver == AR6003_REV2_VERSION) ?
+ AR6003_REV2_APP_START_OVERRIDE :
+ AR6003_REV3_APP_START_OVERRIDE;
+ default:
+ return 0;
+ }
+}
+
+static int ath6kl_get_fw(struct ath6kl *ar, const char *filename,
+ u8 **fw, size_t *fw_len)
+{
+ const struct firmware *fw_entry;
+ int ret;
+
+ ret = request_firmware(&fw_entry, filename, ar->dev);
+ if (ret)
+ return ret;
+
+ *fw_len = fw_entry->size;
+ *fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
+
+ if (*fw == NULL)
+ ret = -ENOMEM;
+
+ release_firmware(fw_entry);
+
+ return ret;
+}
+
+static int ath6kl_fetch_board_file(struct ath6kl *ar)
+{
+ const char *filename;
+ int ret;
+
+ switch (ar->version.target_ver) {
+ case AR6003_REV2_VERSION:
+ filename = AR6003_REV2_BOARD_DATA_FILE;
+ break;
+ default:
+ filename = AR6003_REV3_BOARD_DATA_FILE;
+ break;
+ }
+
+ ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
+ &ar->fw_board_len);
+ if (ret == 0) {
+ /* managed to get proper board file */
+ return 0;
+ }
+
+ /* there was no proper board file, try to use default instead */
+ ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n",
+ filename, ret);
+
+ switch (ar->version.target_ver) {
+ case AR6003_REV2_VERSION:
+ filename = AR6003_REV2_DEFAULT_BOARD_DATA_FILE;
+ break;
+ default:
+ filename = AR6003_REV3_DEFAULT_BOARD_DATA_FILE;
+ break;
+ }
+
+ ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
+ &ar->fw_board_len);
+ if (ret) {
+ ath6kl_err("Failed to get default board file %s: %d\n",
+ filename, ret);
+ return ret;
+ }
+
+ ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n");
+ ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n");
+
+ return 0;
+}
+
+
+static int ath6kl_upload_board_file(struct ath6kl *ar)
+{
+ u32 board_address, board_ext_address, param;
+ int ret;
+
+ if (ar->fw_board == NULL) {
+ ret = ath6kl_fetch_board_file(ar);
+ if (ret)
+ return ret;
+ }
+
+ /* Determine where in Target RAM to write Board Data */
+ ath6kl_bmi_read(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_board_data)),
+ (u8 *) &board_address, 4);
+ ath6kl_dbg(ATH6KL_DBG_TRC, "board data download addr: 0x%x\n",
+ board_address);
+
+ /* determine where in target ram to write extended board data */
+ ath6kl_bmi_read(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_board_ext_data)),
+ (u8 *) &board_ext_address, 4);
+
+ ath6kl_dbg(ATH6KL_DBG_TRC, "board file download addr: 0x%x\n",
+ board_ext_address);
+
+ if (board_ext_address == 0) {
+ ath6kl_err("Failed to get board file target address.\n");
+ return -EINVAL;
+ }
+
+ if (ar->fw_board_len == (AR6003_BOARD_DATA_SZ +
+ AR6003_BOARD_EXT_DATA_SZ)) {
+ /* write extended board data */
+ ret = ath6kl_bmi_write(ar, board_ext_address,
+ ar->fw_board + AR6003_BOARD_DATA_SZ,
+ AR6003_BOARD_EXT_DATA_SZ);
+
+ if (ret) {
+ ath6kl_err("Failed to write extended board data: %d\n",
+ ret);
+ return ret;
+ }
+
+ /* record that extended board data is initialized */
+ param = (AR6003_BOARD_EXT_DATA_SZ << 16) | 1;
+ ath6kl_bmi_write(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_board_ext_data_config)),
+ (unsigned char *) &param, 4);
+ }
+
+ if (ar->fw_board_len < AR6003_BOARD_DATA_SZ) {
+ ath6kl_err("Too small board file: %zu\n", ar->fw_board_len);
+ ret = -EINVAL;
+ return ret;
+ }
+
+ ret = ath6kl_bmi_write(ar, board_address, ar->fw_board,
+ AR6003_BOARD_DATA_SZ);
+
+ if (ret) {
+ ath6kl_err("Board file bmi write failed: %d\n", ret);
+ return ret;
+ }
+
+ /* record the fact that Board Data IS initialized */
+ param = 1;
+ ath6kl_bmi_write(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_board_data_initialized)),
+ (u8 *)&param, 4);
+
+ return ret;
+}
+
+static int ath6kl_upload_otp(struct ath6kl *ar)
+{
+ const char *filename;
+ u32 address, param;
+ int ret;
+
+ switch (ar->version.target_ver) {
+ case AR6003_REV2_VERSION:
+ filename = AR6003_REV2_OTP_FILE;
+ break;
+ default:
+ filename = AR6003_REV3_OTP_FILE;
+ break;
+ }
+
+ if (ar->fw_otp == NULL) {
+ ret = ath6kl_get_fw(ar, filename, &ar->fw_otp,
+ &ar->fw_otp_len);
+ if (ret) {
+ ath6kl_err("Failed to get OTP file %s: %d\n",
+ filename, ret);
+ return ret;
+ }
+ }
+
+ address = ath6kl_get_load_address(ar->version.target_ver,
+ APP_LOAD_ADDR);
+
+ ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp,
+ ar->fw_otp_len);
+ if (ret) {
+ ath6kl_err("Failed to upload OTP file: %d\n", ret);
+ return ret;
+ }
+
+ /* execute the OTP code */
+ param = 0;
+ address = ath6kl_get_load_address(ar->version.target_ver,
+ APP_START_OVERRIDE_ADDR);
+ ath6kl_bmi_execute(ar, address, &param);
+
+ return ret;
+}
+
+static int ath6kl_upload_firmware(struct ath6kl *ar)
+{
+ const char *filename;
+ u32 address;
+ int ret;
+
+ switch (ar->version.target_ver) {
+ case AR6003_REV2_VERSION:
+ filename = AR6003_REV2_FIRMWARE_FILE;
+ break;
+ default:
+ filename = AR6003_REV3_FIRMWARE_FILE;
+ break;
+ }
+
+ if (ar->fw == NULL) {
+ ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
+ if (ret) {
+ ath6kl_err("Failed to get firmware file %s: %d\n",
+ filename, ret);
+ return ret;
+ }
+ }
+
+ address = ath6kl_get_load_address(ar->version.target_ver,
+ APP_LOAD_ADDR);
+
+ ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len);
+
+ if (ret) {
+ ath6kl_err("Failed to write firmware: %d\n", ret);
+ return ret;
+ }
+
+ /* Set starting address for firmware */
+ address = ath6kl_get_load_address(ar->version.target_ver,
+ APP_START_OVERRIDE_ADDR);
+ ath6kl_bmi_set_app_start(ar, address);
+
+ return ret;
+}
+
+static int ath6kl_upload_patch(struct ath6kl *ar)
+{
+ const char *filename;
+ u32 address, param;
+ int ret;
+
+ switch (ar->version.target_ver) {
+ case AR6003_REV2_VERSION:
+ filename = AR6003_REV2_PATCH_FILE;
+ break;
+ default:
+ filename = AR6003_REV3_PATCH_FILE;
+ break;
+ }
+
+ if (ar->fw_patch == NULL) {
+ ret = ath6kl_get_fw(ar, filename, &ar->fw_patch,
+ &ar->fw_patch_len);
+ if (ret) {
+ ath6kl_err("Failed to get patch file %s: %d\n",
+ filename, ret);
+ return ret;
+ }
+ }
+
+ address = ath6kl_get_load_address(ar->version.target_ver,
+ DATASET_PATCH_ADDR);
+
+ ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len);
+ if (ret) {
+ ath6kl_err("Failed to write patch file: %d\n", ret);
+ return ret;
+ }
+
+ param = address;
+ ath6kl_bmi_write(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_dset_list_head)),
+ (unsigned char *) &param, 4);
+
+ return 0;
+}
+
+static int ath6kl_init_upload(struct ath6kl *ar)
+{
+ u32 param, options, sleep, address;
+ int status = 0;
+
+ if (ar->target_type != TARGET_TYPE_AR6003)
+ return -EINVAL;
+
+ /* temporarily disable system sleep */
+ address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
+ status = ath6kl_bmi_reg_read(ar, address, &param);
+ if (status)
+ return status;
+
+ options = param;
+
+ param |= ATH6KL_OPTION_SLEEP_DISABLE;
+ status = ath6kl_bmi_reg_write(ar, address, param);
+ if (status)
+ return status;
+
+ address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
+ status = ath6kl_bmi_reg_read(ar, address, &param);
+ if (status)
+ return status;
+
+ sleep = param;
+
+ param |= SM(SYSTEM_SLEEP_DISABLE, 1);
+ status = ath6kl_bmi_reg_write(ar, address, param);
+ if (status)
+ return status;
+
+ ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n",
+ options, sleep);
+
+ /* program analog PLL register */
+ status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER,
+ 0xF9104001);
+ if (status)
+ return status;
+
+ /* Run at 80/88MHz by default */
+ param = SM(CPU_CLOCK_STANDARD, 1);
+
+ address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS;
+ status = ath6kl_bmi_reg_write(ar, address, param);
+ if (status)
+ return status;
+
+ param = 0;
+ address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS;
+ param = SM(LPO_CAL_ENABLE, 1);
+ status = ath6kl_bmi_reg_write(ar, address, param);
+ if (status)
+ return status;
+
+ /* WAR to avoid SDIO CRC err */
+ if (ar->version.target_ver == AR6003_REV2_VERSION) {
+ ath6kl_err("%s: temporary war to avoid sdio crc error\n",
+ __func__);
+
+ param = 0x20;
+
+ address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS;
+ status = ath6kl_bmi_reg_write(ar, address, param);
+ if (status)
+ return status;
+
+ address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS;
+ status = ath6kl_bmi_reg_write(ar, address, param);
+ if (status)
+ return status;
+
+ address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS;
+ status = ath6kl_bmi_reg_write(ar, address, param);
+ if (status)
+ return status;
+
+ address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS;
+ status = ath6kl_bmi_reg_write(ar, address, param);
+ if (status)
+ return status;
+ }
+
+ /* write EEPROM data to Target RAM */
+ status = ath6kl_upload_board_file(ar);
+ if (status)
+ return status;
+
+ /* transfer One time Programmable data */
+ status = ath6kl_upload_otp(ar);
+ if (status)
+ return status;
+
+ /* Download Target firmware */
+ status = ath6kl_upload_firmware(ar);
+ if (status)
+ return status;
+
+ status = ath6kl_upload_patch(ar);
+ if (status)
+ return status;
+
+ /* Restore system sleep */
+ address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
+ status = ath6kl_bmi_reg_write(ar, address, sleep);
+ if (status)
+ return status;
+
+ address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
+ param = options | 0x20;
+ status = ath6kl_bmi_reg_write(ar, address, param);
+ if (status)
+ return status;
+
+ /* Configure GPIO AR6003 UART */
+ param = CONFIG_AR600x_DEBUG_UART_TX_PIN;
+ status = ath6kl_bmi_write(ar,
+ ath6kl_get_hi_item_addr(ar,
+ HI_ITEM(hi_dbg_uart_txpin)),
+ (u8 *)&param, 4);
+
+ return status;
+}
+
+static int ath6kl_init(struct net_device *dev)
+{
+ struct ath6kl *ar = ath6kl_priv(dev);
+ int status = 0;
+ s32 timeleft;
+
+ if (!ar)
+ return -EIO;
+
+ /* Do we need to finish the BMI phase */
+ if (ath6kl_bmi_done(ar)) {
+ status = -EIO;
+ goto ath6kl_init_done;
+ }
+
+ /* Indicate that WMI is enabled (although not ready yet) */
+ set_bit(WMI_ENABLED, &ar->flag);
+ ar->wmi = ath6kl_wmi_init((void *) ar);
+ if (!ar->wmi) {
+ ath6kl_err("%s: failed to initialize wmi\n", __func__);
+ status = -EIO;
+ goto ath6kl_init_done;
+ }
+
+ ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi);
+
+ /*
+ * The reason we have to wait for the target here is that the
+ * driver layer has to init BMI in order to set the host block
+ * size.
+ */
+ if (htc_wait_target(ar->htc_target)) {
+ status = -EIO;
+ goto err_wmi_cleanup;
+ }
+
+ if (ath6kl_init_service_ep(ar)) {
+ status = -EIO;
+ goto err_cleanup_scatter;
+ }
+
+ /* setup access class priority mappings */
+ ar->ac_stream_pri_map[WMM_AC_BK] = 0; /* lowest */
+ ar->ac_stream_pri_map[WMM_AC_BE] = 1;
+ ar->ac_stream_pri_map[WMM_AC_VI] = 2;
+ ar->ac_stream_pri_map[WMM_AC_VO] = 3; /* highest */
+
+ /* give our connected endpoints some buffers */
+ ath6kl_rx_refill(ar->htc_target, ar->ctrl_ep);
+ ath6kl_rx_refill(ar->htc_target, ar->ac2ep_map[WMM_AC_BE]);
+
+ /* allocate some buffers that handle larger AMSDU frames */
+ ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS);
+
+ /* setup credit distribution */
+ ath6k_setup_credit_dist(ar->htc_target, &ar->credit_state_info);
+
+ ath6kl_cookie_init(ar);
+
+ /* start HTC */
+ status = htc_start(ar->htc_target);
+
+ if (status) {
+ ath6kl_cookie_cleanup(ar);
+ goto err_rxbuf_cleanup;
+ }
+
+ /* Wait for Wmi event to be ready */
+ timeleft = wait_event_interruptible_timeout(ar->event_wq,
+ test_bit(WMI_READY,
+ &ar->flag),
+ WMI_TIMEOUT);
+
+ if (ar->version.abi_ver != ATH6KL_ABI_VERSION) {
+ ath6kl_err("%s: abi version mismatch: host(0x%x), target(0x%x)\n",
+ __func__, ATH6KL_ABI_VERSION,
+ ar->version.abi_ver);
+ status = -EIO;
+ goto err_htc_stop;
+ }
+
+ if (!timeleft || signal_pending(current)) {
+ ath6kl_err("%s: wmi is not ready or wait was interrupted\n",
+ __func__);
+ status = -EIO;
+ goto err_htc_stop;
+ }
+
+ ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__);
+
+ /* communicate the wmi protocol verision to the target */
+ if ((ath6kl_set_host_app_area(ar)) != 0)
+ ath6kl_err("%s: unable to set the host app area\n", __func__);
+
+ ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER |
+ ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST;
+
+ status = ath6kl_target_config_wlan_params(ar);
+ if (!status)
+ goto ath6kl_init_done;
+
+err_htc_stop:
+ htc_stop(ar->htc_target);
+err_rxbuf_cleanup:
+ htc_flush_rx_buf(ar->htc_target);
+ ath6kl_cleanup_amsdu_rxbufs(ar);
+err_cleanup_scatter:
+ ath6kl_hif_cleanup_scatter(ar);
+err_wmi_cleanup:
+ ath6kl_wmi_shutdown(ar->wmi);
+ clear_bit(WMI_ENABLED, &ar->flag);
+ ar->wmi = NULL;
+
+ath6kl_init_done:
+ return status;
+}
+
+int ath6kl_core_init(struct ath6kl *ar)
+{
+ int ret = 0;
+ struct ath6kl_bmi_target_info targ_info;
+
+ ar->ath6kl_wq = create_singlethread_workqueue("ath6kl");
+ if (!ar->ath6kl_wq)
+ return -ENOMEM;
+
+ ret = ath6kl_bmi_init(ar);
+ if (ret)
+ goto err_wq;
+
+ ret = ath6kl_bmi_get_target_info(ar, &targ_info);
+ if (ret)
+ goto err_bmi_cleanup;
+
+ ar->version.target_ver = le32_to_cpu(targ_info.version);
+ ar->target_type = le32_to_cpu(targ_info.type);
+ ar->wdev->wiphy->hw_version = le32_to_cpu(targ_info.version);
+
+ ret = ath6kl_configure_target(ar);
+ if (ret)
+ goto err_bmi_cleanup;
+
+ ar->htc_target = htc_create(ar);
+
+ if (!ar->htc_target) {
+ ret = -ENOMEM;
+ goto err_bmi_cleanup;
+ }
+
+ ar->aggr_cntxt = aggr_init(ar->net_dev);
+ if (!ar->aggr_cntxt) {
+ ath6kl_err("%s: failed to initialize aggr.\n", __func__);
+ ret = -ENOMEM;
+ goto err_htc_cleanup;
+ }
+
+ ret = ath6kl_init_upload(ar);
+ if (ret)
+ goto err_htc_cleanup;
+
+ ret = ath6kl_init(ar->net_dev);
+ if (ret)
+ goto err_htc_cleanup;
+
+ /* This runs the init function if registered */
+ ret = register_netdev(ar->net_dev);
+ if (ret) {
+ ath6kl_err("%s: register_netdev failed\n", __func__);
+ ath6kl_destroy(ar->net_dev, 0);
+ return ret;
+ }
+
+ set_bit(NETDEV_REGISTERED, &ar->flag);
+
+ ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n",
+ __func__, ar->net_dev->name, ar->net_dev, ar);
+
+ return ret;
+
+err_htc_cleanup:
+ htc_cleanup(ar->htc_target);
+err_bmi_cleanup:
+ ath6kl_bmi_cleanup(ar);
+err_wq:
+ destroy_workqueue(ar->ath6kl_wq);
+ return ret;
+}
+
+void ath6kl_stop_txrx(struct ath6kl *ar)
+{
+ struct net_device *ndev = ar->net_dev;
+
+ if (!ndev)
+ return;
+
+ set_bit(DESTROY_IN_PROGRESS, &ar->flag);
+
+ if (down_interruptible(&ar->sem)) {
+ ath6kl_err("%s: down_interruptible failed\n", __func__);
+ return;
+ }
+
+ if (ar->wlan_pwr_state != WLAN_POWER_STATE_CUT_PWR)
+ ath6kl_stop_endpoint(ndev, false, true);
+
+ ar->wlan_state = WLAN_DISABLED;
+}
+
+/*
+ * We need to differentiate between the surprise and planned removal of the
+ * device because of the following consideration:
+ *
+ * - In case of surprise removal, the hcd already frees up the pending
+ * for the device and hence there is no need to unregister the function
+ * driver inorder to get these requests. For planned removal, the function
+ * driver has to explicitly unregister itself to have the hcd return all the
+ * pending requests before the data structures for the devices are freed up.
+ * Note that as per the current implementation, the function driver will
+ * end up releasing all the devices since there is no API to selectively
+ * release a particular device.
+ *
+ * - Certain commands issued to the target can be skipped for surprise
+ * removal since they will anyway not go through.
+ */
+void ath6kl_destroy(struct net_device *dev, unsigned int unregister)
+{
+ struct ath6kl *ar;
+
+ if (!dev || !ath6kl_priv(dev)) {
+ ath6kl_err("%s: failed to get device structure\n", __func__);
+ return;
+ }
+
+ ar = ath6kl_priv(dev);
+
+ destroy_workqueue(ar->ath6kl_wq);
+
+ if (ar->htc_target)
+ htc_cleanup(ar->htc_target);
+
+ aggr_module_destroy(ar->aggr_cntxt);
+
+ ath6kl_cookie_cleanup(ar);
+
+ ath6kl_cleanup_amsdu_rxbufs(ar);
+
+ ath6kl_bmi_cleanup(ar);
+
+ if (unregister && test_bit(NETDEV_REGISTERED, &ar->flag)) {
+ unregister_netdev(dev);
+ clear_bit(NETDEV_REGISTERED, &ar->flag);
+ }
+
+ free_netdev(dev);
+
+ ath6kl_cfg80211_deinit(ar);
+}