2 * Copyright (c) 2005-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <linux/pci.h>
19 #include <linux/module.h>
20 #include <linux/interrupt.h>
21 #include <linux/spinlock.h>
22 #include <linux/bitops.h>
27 #include "targaddrs.h"
36 enum ath10k_pci_irq_mode {
37 ATH10K_PCI_IRQ_AUTO = 0,
38 ATH10K_PCI_IRQ_LEGACY = 1,
39 ATH10K_PCI_IRQ_MSI = 2,
42 static unsigned int ath10k_target_ps;
43 static unsigned int ath10k_pci_irq_mode = ATH10K_PCI_IRQ_AUTO;
45 module_param(ath10k_target_ps, uint, 0644);
46 MODULE_PARM_DESC(ath10k_target_ps, "Enable ath10k Target (SoC) PS option");
48 module_param_named(irq_mode, ath10k_pci_irq_mode, uint, 0644);
49 MODULE_PARM_DESC(irq_mode, "0: auto, 1: legacy, 2: msi (default: 0)");
51 /* how long wait to wait for target to initialise, in ms */
52 #define ATH10K_PCI_TARGET_WAIT 3000
54 #define QCA988X_2_0_DEVICE_ID (0x003c)
56 static DEFINE_PCI_DEVICE_TABLE(ath10k_pci_id_table) = {
57 { PCI_VDEVICE(ATHEROS, QCA988X_2_0_DEVICE_ID) }, /* PCI-E QCA988X V2 */
61 static int ath10k_pci_diag_read_access(struct ath10k *ar, u32 address,
64 static int ath10k_pci_post_rx(struct ath10k *ar);
65 static int ath10k_pci_post_rx_pipe(struct ath10k_pci_pipe *pipe_info,
67 static void ath10k_pci_rx_pipe_cleanup(struct ath10k_pci_pipe *pipe_info);
68 static int ath10k_pci_cold_reset(struct ath10k *ar);
69 static int ath10k_pci_warm_reset(struct ath10k *ar);
70 static int ath10k_pci_wait_for_target_init(struct ath10k *ar);
71 static int ath10k_pci_init_irq(struct ath10k *ar);
72 static int ath10k_pci_deinit_irq(struct ath10k *ar);
73 static int ath10k_pci_request_irq(struct ath10k *ar);
74 static void ath10k_pci_free_irq(struct ath10k *ar);
75 static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe,
76 struct ath10k_ce_pipe *rx_pipe,
77 struct bmi_xfer *xfer);
79 static const struct ce_attr host_ce_config_wlan[] = {
80 /* CE0: host->target HTC control and raw streams */
82 .flags = CE_ATTR_FLAGS,
88 /* CE1: target->host HTT + HTC control */
90 .flags = CE_ATTR_FLAGS,
96 /* CE2: target->host WMI */
98 .flags = CE_ATTR_FLAGS,
104 /* CE3: host->target WMI */
106 .flags = CE_ATTR_FLAGS,
112 /* CE4: host->target HTT */
114 .flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
115 .src_nentries = CE_HTT_H2T_MSG_SRC_NENTRIES,
122 .flags = CE_ATTR_FLAGS,
128 /* CE6: target autonomous hif_memcpy */
130 .flags = CE_ATTR_FLAGS,
136 /* CE7: ce_diag, the Diagnostic Window */
138 .flags = CE_ATTR_FLAGS,
140 .src_sz_max = DIAG_TRANSFER_LIMIT,
145 /* Target firmware's Copy Engine configuration. */
146 static const struct ce_pipe_config target_ce_config_wlan[] = {
147 /* CE0: host->target HTC control and raw streams */
150 .pipedir = PIPEDIR_OUT,
153 .flags = CE_ATTR_FLAGS,
157 /* CE1: target->host HTT + HTC control */
160 .pipedir = PIPEDIR_IN,
163 .flags = CE_ATTR_FLAGS,
167 /* CE2: target->host WMI */
170 .pipedir = PIPEDIR_IN,
173 .flags = CE_ATTR_FLAGS,
177 /* CE3: host->target WMI */
180 .pipedir = PIPEDIR_OUT,
183 .flags = CE_ATTR_FLAGS,
187 /* CE4: host->target HTT */
190 .pipedir = PIPEDIR_OUT,
193 .flags = CE_ATTR_FLAGS,
197 /* NB: 50% of src nentries, since tx has 2 frags */
202 .pipedir = PIPEDIR_OUT,
205 .flags = CE_ATTR_FLAGS,
209 /* CE6: Reserved for target autonomous hif_memcpy */
212 .pipedir = PIPEDIR_INOUT,
215 .flags = CE_ATTR_FLAGS,
219 /* CE7 used only by Host */
222 static bool ath10k_pci_irq_pending(struct ath10k *ar)
226 /* Check if the shared legacy irq is for us */
227 cause = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
228 PCIE_INTR_CAUSE_ADDRESS);
229 if (cause & (PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL))
235 static void ath10k_pci_disable_and_clear_legacy_irq(struct ath10k *ar)
237 /* IMPORTANT: INTR_CLR register has to be set after
238 * INTR_ENABLE is set to 0, otherwise interrupt can not be
240 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
242 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_CLR_ADDRESS,
243 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
245 /* IMPORTANT: this extra read transaction is required to
246 * flush the posted write buffer. */
247 (void) ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
248 PCIE_INTR_ENABLE_ADDRESS);
251 static void ath10k_pci_enable_legacy_irq(struct ath10k *ar)
253 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
254 PCIE_INTR_ENABLE_ADDRESS,
255 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
257 /* IMPORTANT: this extra read transaction is required to
258 * flush the posted write buffer. */
259 (void) ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
260 PCIE_INTR_ENABLE_ADDRESS);
263 static irqreturn_t ath10k_pci_early_irq_handler(int irq, void *arg)
265 struct ath10k *ar = arg;
266 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
268 if (ar_pci->num_msi_intrs == 0) {
269 if (!ath10k_pci_irq_pending(ar))
272 ath10k_pci_disable_and_clear_legacy_irq(ar);
275 tasklet_schedule(&ar_pci->early_irq_tasklet);
280 static int ath10k_pci_request_early_irq(struct ath10k *ar)
282 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
285 /* Regardless whether MSI-X/MSI/legacy irqs have been set up the first
286 * interrupt from irq vector is triggered in all cases for FW
287 * indication/errors */
288 ret = request_irq(ar_pci->pdev->irq, ath10k_pci_early_irq_handler,
289 IRQF_SHARED, "ath10k_pci (early)", ar);
291 ath10k_warn("failed to request early irq: %d\n", ret);
298 static void ath10k_pci_free_early_irq(struct ath10k *ar)
300 free_irq(ath10k_pci_priv(ar)->pdev->irq, ar);
304 * Diagnostic read/write access is provided for startup/config/debug usage.
305 * Caller must guarantee proper alignment, when applicable, and single user
308 static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data,
311 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
314 unsigned int completed_nbytes, orig_nbytes, remaining_bytes;
317 struct ath10k_ce_pipe *ce_diag;
318 /* Host buffer address in CE space */
320 dma_addr_t ce_data_base = 0;
321 void *data_buf = NULL;
325 * This code cannot handle reads to non-memory space. Redirect to the
326 * register read fn but preserve the multi word read capability of
329 if (address < DRAM_BASE_ADDRESS) {
330 if (!IS_ALIGNED(address, 4) ||
331 !IS_ALIGNED((unsigned long)data, 4))
334 while ((nbytes >= 4) && ((ret = ath10k_pci_diag_read_access(
335 ar, address, (u32 *)data)) == 0)) {
336 nbytes -= sizeof(u32);
337 address += sizeof(u32);
343 ce_diag = ar_pci->ce_diag;
346 * Allocate a temporary bounce buffer to hold caller's data
347 * to be DMA'ed from Target. This guarantees
348 * 1) 4-byte alignment
349 * 2) Buffer in DMA-able space
351 orig_nbytes = nbytes;
352 data_buf = (unsigned char *)pci_alloc_consistent(ar_pci->pdev,
360 memset(data_buf, 0, orig_nbytes);
362 remaining_bytes = orig_nbytes;
363 ce_data = ce_data_base;
364 while (remaining_bytes) {
365 nbytes = min_t(unsigned int, remaining_bytes,
366 DIAG_TRANSFER_LIMIT);
368 ret = ath10k_ce_recv_buf_enqueue(ce_diag, NULL, ce_data);
372 /* Request CE to send from Target(!) address to Host buffer */
374 * The address supplied by the caller is in the
375 * Target CPU virtual address space.
377 * In order to use this address with the diagnostic CE,
378 * convert it from Target CPU virtual address space
379 * to CE address space
382 address = TARG_CPU_SPACE_TO_CE_SPACE(ar, ar_pci->mem,
384 ath10k_pci_sleep(ar);
386 ret = ath10k_ce_send(ce_diag, NULL, (u32)address, nbytes, 0,
392 while (ath10k_ce_completed_send_next(ce_diag, NULL, &buf,
396 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
402 if (nbytes != completed_nbytes) {
407 if (buf != (u32) address) {
413 while (ath10k_ce_completed_recv_next(ce_diag, NULL, &buf,
418 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
424 if (nbytes != completed_nbytes) {
429 if (buf != ce_data) {
434 remaining_bytes -= nbytes;
441 /* Copy data from allocated DMA buf to caller's buf */
442 WARN_ON_ONCE(orig_nbytes & 3);
443 for (i = 0; i < orig_nbytes / sizeof(__le32); i++) {
445 __le32_to_cpu(((__le32 *)data_buf)[i]);
448 ath10k_dbg(ATH10K_DBG_PCI, "%s failure (0x%x)\n",
452 pci_free_consistent(ar_pci->pdev, orig_nbytes,
453 data_buf, ce_data_base);
458 /* Read 4-byte aligned data from Target memory or register */
459 static int ath10k_pci_diag_read_access(struct ath10k *ar, u32 address,
462 /* Assume range doesn't cross this boundary */
463 if (address >= DRAM_BASE_ADDRESS)
464 return ath10k_pci_diag_read_mem(ar, address, data, sizeof(u32));
467 *data = ath10k_pci_read32(ar, address);
468 ath10k_pci_sleep(ar);
472 static int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address,
473 const void *data, int nbytes)
475 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
478 unsigned int completed_nbytes, orig_nbytes, remaining_bytes;
481 struct ath10k_ce_pipe *ce_diag;
482 void *data_buf = NULL;
483 u32 ce_data; /* Host buffer address in CE space */
484 dma_addr_t ce_data_base = 0;
487 ce_diag = ar_pci->ce_diag;
490 * Allocate a temporary bounce buffer to hold caller's data
491 * to be DMA'ed to Target. This guarantees
492 * 1) 4-byte alignment
493 * 2) Buffer in DMA-able space
495 orig_nbytes = nbytes;
496 data_buf = (unsigned char *)pci_alloc_consistent(ar_pci->pdev,
504 /* Copy caller's data to allocated DMA buf */
505 WARN_ON_ONCE(orig_nbytes & 3);
506 for (i = 0; i < orig_nbytes / sizeof(__le32); i++)
507 ((__le32 *)data_buf)[i] = __cpu_to_le32(((u32 *)data)[i]);
510 * The address supplied by the caller is in the
511 * Target CPU virtual address space.
513 * In order to use this address with the diagnostic CE,
515 * Target CPU virtual address space
520 address = TARG_CPU_SPACE_TO_CE_SPACE(ar, ar_pci->mem, address);
521 ath10k_pci_sleep(ar);
523 remaining_bytes = orig_nbytes;
524 ce_data = ce_data_base;
525 while (remaining_bytes) {
526 /* FIXME: check cast */
527 nbytes = min_t(int, remaining_bytes, DIAG_TRANSFER_LIMIT);
529 /* Set up to receive directly into Target(!) address */
530 ret = ath10k_ce_recv_buf_enqueue(ce_diag, NULL, address);
535 * Request CE to send caller-supplied data that
536 * was copied to bounce buffer to Target(!) address.
538 ret = ath10k_ce_send(ce_diag, NULL, (u32) ce_data,
544 while (ath10k_ce_completed_send_next(ce_diag, NULL, &buf,
549 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
555 if (nbytes != completed_nbytes) {
560 if (buf != ce_data) {
566 while (ath10k_ce_completed_recv_next(ce_diag, NULL, &buf,
571 if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
577 if (nbytes != completed_nbytes) {
582 if (buf != address) {
587 remaining_bytes -= nbytes;
594 pci_free_consistent(ar_pci->pdev, orig_nbytes, data_buf,
599 ath10k_dbg(ATH10K_DBG_PCI, "%s failure (0x%x)\n", __func__,
605 /* Write 4B data to Target memory or register */
606 static int ath10k_pci_diag_write_access(struct ath10k *ar, u32 address,
609 /* Assume range doesn't cross this boundary */
610 if (address >= DRAM_BASE_ADDRESS)
611 return ath10k_pci_diag_write_mem(ar, address, &data,
615 ath10k_pci_write32(ar, address, data);
616 ath10k_pci_sleep(ar);
620 static bool ath10k_pci_target_is_awake(struct ath10k *ar)
622 void __iomem *mem = ath10k_pci_priv(ar)->mem;
624 val = ioread32(mem + PCIE_LOCAL_BASE_ADDRESS +
626 return (RTC_STATE_V_GET(val) == RTC_STATE_V_ON);
629 int ath10k_do_pci_wake(struct ath10k *ar)
631 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
632 void __iomem *pci_addr = ar_pci->mem;
636 if (atomic_read(&ar_pci->keep_awake_count) == 0) {
638 iowrite32(PCIE_SOC_WAKE_V_MASK,
639 pci_addr + PCIE_LOCAL_BASE_ADDRESS +
640 PCIE_SOC_WAKE_ADDRESS);
642 atomic_inc(&ar_pci->keep_awake_count);
644 if (ar_pci->verified_awake)
648 if (ath10k_pci_target_is_awake(ar)) {
649 ar_pci->verified_awake = true;
653 if (tot_delay > PCIE_WAKE_TIMEOUT) {
654 ath10k_warn("target took longer %d us to wake up (awake count %d)\n",
656 atomic_read(&ar_pci->keep_awake_count));
661 tot_delay += curr_delay;
668 void ath10k_do_pci_sleep(struct ath10k *ar)
670 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
671 void __iomem *pci_addr = ar_pci->mem;
673 if (atomic_dec_and_test(&ar_pci->keep_awake_count)) {
675 ar_pci->verified_awake = false;
676 iowrite32(PCIE_SOC_WAKE_RESET,
677 pci_addr + PCIE_LOCAL_BASE_ADDRESS +
678 PCIE_SOC_WAKE_ADDRESS);
682 /* Called by lower (CE) layer when a send to Target completes. */
683 static void ath10k_pci_ce_send_done(struct ath10k_ce_pipe *ce_state)
685 struct ath10k *ar = ce_state->ar;
686 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
687 struct ath10k_hif_cb *cb = &ar_pci->msg_callbacks_current;
688 void *transfer_context;
691 unsigned int transfer_id;
693 while (ath10k_ce_completed_send_next(ce_state, &transfer_context,
695 &transfer_id) == 0) {
696 /* no need to call tx completion for NULL pointers */
697 if (transfer_context == NULL)
700 cb->tx_completion(ar, transfer_context, transfer_id);
704 /* Called by lower (CE) layer when data is received from the Target. */
705 static void ath10k_pci_ce_recv_data(struct ath10k_ce_pipe *ce_state)
707 struct ath10k *ar = ce_state->ar;
708 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
709 struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id];
710 struct ath10k_hif_cb *cb = &ar_pci->msg_callbacks_current;
712 void *transfer_context;
714 unsigned int nbytes, max_nbytes;
715 unsigned int transfer_id;
719 while (ath10k_ce_completed_recv_next(ce_state, &transfer_context,
720 &ce_data, &nbytes, &transfer_id,
722 err = ath10k_pci_post_rx_pipe(pipe_info, 1);
725 ath10k_warn("failed to replenish CE rx ring %d: %d\n",
726 pipe_info->pipe_num, err);
729 skb = transfer_context;
730 max_nbytes = skb->len + skb_tailroom(skb);
731 dma_unmap_single(ar->dev, ATH10K_SKB_CB(skb)->paddr,
732 max_nbytes, DMA_FROM_DEVICE);
734 if (unlikely(max_nbytes < nbytes)) {
735 ath10k_warn("rxed more than expected (nbytes %d, max %d)",
737 dev_kfree_skb_any(skb);
741 skb_put(skb, nbytes);
742 cb->rx_completion(ar, skb, pipe_info->pipe_num);
746 static int ath10k_pci_hif_tx_sg(struct ath10k *ar, u8 pipe_id,
747 struct ath10k_hif_sg_item *items, int n_items)
749 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
750 struct ath10k_pci_pipe *pci_pipe = &ar_pci->pipe_info[pipe_id];
751 struct ath10k_ce_pipe *ce_pipe = pci_pipe->ce_hdl;
752 struct ath10k_ce_ring *src_ring = ce_pipe->src_ring;
753 unsigned int nentries_mask = src_ring->nentries_mask;
754 unsigned int sw_index = src_ring->sw_index;
755 unsigned int write_index = src_ring->write_index;
758 spin_lock_bh(&ar_pci->ce_lock);
760 if (unlikely(CE_RING_DELTA(nentries_mask,
761 write_index, sw_index - 1) < n_items)) {
766 for (i = 0; i < n_items - 1; i++) {
767 ath10k_dbg(ATH10K_DBG_PCI,
768 "pci tx item %d paddr 0x%08x len %d n_items %d\n",
769 i, items[i].paddr, items[i].len, n_items);
770 ath10k_dbg_dump(ATH10K_DBG_PCI_DUMP, NULL, "item data: ",
771 items[i].vaddr, items[i].len);
773 err = ath10k_ce_send_nolock(ce_pipe,
774 items[i].transfer_context,
777 items[i].transfer_id,
778 CE_SEND_FLAG_GATHER);
783 /* `i` is equal to `n_items -1` after for() */
785 ath10k_dbg(ATH10K_DBG_PCI,
786 "pci tx item %d paddr 0x%08x len %d n_items %d\n",
787 i, items[i].paddr, items[i].len, n_items);
788 ath10k_dbg_dump(ATH10K_DBG_PCI_DUMP, NULL, "item data: ",
789 items[i].vaddr, items[i].len);
791 err = ath10k_ce_send_nolock(ce_pipe,
792 items[i].transfer_context,
795 items[i].transfer_id,
802 spin_unlock_bh(&ar_pci->ce_lock);
806 static u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe)
808 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
809 return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl);
812 static void ath10k_pci_hif_dump_area(struct ath10k *ar)
814 u32 reg_dump_area = 0;
815 u32 reg_dump_values[REG_DUMP_COUNT_QCA988X] = {};
820 ath10k_err("firmware crashed!\n");
821 ath10k_err("hardware name %s version 0x%x\n",
822 ar->hw_params.name, ar->target_version);
823 ath10k_err("firmware version: %s\n", ar->hw->wiphy->fw_version);
825 host_addr = host_interest_item_address(HI_ITEM(hi_failure_state));
826 ret = ath10k_pci_diag_read_mem(ar, host_addr,
827 ®_dump_area, sizeof(u32));
829 ath10k_err("failed to read FW dump area address: %d\n", ret);
833 ath10k_err("target register Dump Location: 0x%08X\n", reg_dump_area);
835 ret = ath10k_pci_diag_read_mem(ar, reg_dump_area,
837 REG_DUMP_COUNT_QCA988X * sizeof(u32));
839 ath10k_err("failed to read FW dump area: %d\n", ret);
843 BUILD_BUG_ON(REG_DUMP_COUNT_QCA988X % 4);
845 ath10k_err("target Register Dump\n");
846 for (i = 0; i < REG_DUMP_COUNT_QCA988X; i += 4)
847 ath10k_err("[%02d]: 0x%08X 0x%08X 0x%08X 0x%08X\n",
850 reg_dump_values[i + 1],
851 reg_dump_values[i + 2],
852 reg_dump_values[i + 3]);
854 queue_work(ar->workqueue, &ar->restart_work);
857 static void ath10k_pci_hif_send_complete_check(struct ath10k *ar, u8 pipe,
863 * Decide whether to actually poll for completions, or just
864 * wait for a later chance.
865 * If there seem to be plenty of resources left, then just wait
866 * since checking involves reading a CE register, which is a
867 * relatively expensive operation.
869 resources = ath10k_pci_hif_get_free_queue_number(ar, pipe);
872 * If at least 50% of the total resources are still available,
873 * don't bother checking again yet.
875 if (resources > (host_ce_config_wlan[pipe].src_nentries >> 1))
878 ath10k_ce_per_engine_service(ar, pipe);
881 static void ath10k_pci_hif_set_callbacks(struct ath10k *ar,
882 struct ath10k_hif_cb *callbacks)
884 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
886 ath10k_dbg(ATH10K_DBG_PCI, "%s\n", __func__);
888 memcpy(&ar_pci->msg_callbacks_current, callbacks,
889 sizeof(ar_pci->msg_callbacks_current));
892 static int ath10k_pci_setup_ce_irq(struct ath10k *ar)
894 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
895 const struct ce_attr *attr;
896 struct ath10k_pci_pipe *pipe_info;
897 int pipe_num, disable_interrupts;
899 for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
900 pipe_info = &ar_pci->pipe_info[pipe_num];
902 /* Handle Diagnostic CE specially */
903 if (pipe_info->ce_hdl == ar_pci->ce_diag)
906 attr = &host_ce_config_wlan[pipe_num];
908 if (attr->src_nentries) {
909 disable_interrupts = attr->flags & CE_ATTR_DIS_INTR;
910 ath10k_ce_send_cb_register(pipe_info->ce_hdl,
911 ath10k_pci_ce_send_done,
915 if (attr->dest_nentries)
916 ath10k_ce_recv_cb_register(pipe_info->ce_hdl,
917 ath10k_pci_ce_recv_data);
923 static void ath10k_pci_kill_tasklet(struct ath10k *ar)
925 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
928 tasklet_kill(&ar_pci->intr_tq);
929 tasklet_kill(&ar_pci->msi_fw_err);
930 tasklet_kill(&ar_pci->early_irq_tasklet);
932 for (i = 0; i < CE_COUNT; i++)
933 tasklet_kill(&ar_pci->pipe_info[i].intr);
936 /* TODO - temporary mapping while we have too few CE's */
937 static int ath10k_pci_hif_map_service_to_pipe(struct ath10k *ar,
938 u16 service_id, u8 *ul_pipe,
939 u8 *dl_pipe, int *ul_is_polled,
944 /* polling for received messages not supported */
947 switch (service_id) {
948 case ATH10K_HTC_SVC_ID_HTT_DATA_MSG:
950 * Host->target HTT gets its own pipe, so it can be polled
951 * while other pipes are interrupt driven.
955 * Use the same target->host pipe for HTC ctrl, HTC raw
961 case ATH10K_HTC_SVC_ID_RSVD_CTRL:
962 case ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS:
964 * Note: HTC_RAW_STREAMS_SVC is currently unused, and
965 * HTC_CTRL_RSVD_SVC could share the same pipe as the
966 * WMI services. So, if another CE is needed, change
967 * this to *ul_pipe = 3, which frees up CE 0.
974 case ATH10K_HTC_SVC_ID_WMI_DATA_BK:
975 case ATH10K_HTC_SVC_ID_WMI_DATA_BE:
976 case ATH10K_HTC_SVC_ID_WMI_DATA_VI:
977 case ATH10K_HTC_SVC_ID_WMI_DATA_VO:
979 case ATH10K_HTC_SVC_ID_WMI_CONTROL:
985 /* pipe 6 reserved */
986 /* pipe 7 reserved */
993 (host_ce_config_wlan[*ul_pipe].flags & CE_ATTR_DIS_INTR) != 0;
998 static void ath10k_pci_hif_get_default_pipe(struct ath10k *ar,
999 u8 *ul_pipe, u8 *dl_pipe)
1001 int ul_is_polled, dl_is_polled;
1003 (void)ath10k_pci_hif_map_service_to_pipe(ar,
1004 ATH10K_HTC_SVC_ID_RSVD_CTRL,
1011 static int ath10k_pci_post_rx_pipe(struct ath10k_pci_pipe *pipe_info,
1014 struct ath10k *ar = pipe_info->hif_ce_state;
1015 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1016 struct ath10k_ce_pipe *ce_state = pipe_info->ce_hdl;
1017 struct sk_buff *skb;
1021 if (pipe_info->buf_sz == 0)
1024 for (i = 0; i < num; i++) {
1025 skb = dev_alloc_skb(pipe_info->buf_sz);
1027 ath10k_warn("failed to allocate skbuff for pipe %d\n",
1033 WARN_ONCE((unsigned long)skb->data & 3, "unaligned skb");
1035 ce_data = dma_map_single(ar->dev, skb->data,
1036 skb->len + skb_tailroom(skb),
1039 if (unlikely(dma_mapping_error(ar->dev, ce_data))) {
1040 ath10k_warn("failed to DMA map sk_buff\n");
1041 dev_kfree_skb_any(skb);
1046 ATH10K_SKB_CB(skb)->paddr = ce_data;
1048 pci_dma_sync_single_for_device(ar_pci->pdev, ce_data,
1050 PCI_DMA_FROMDEVICE);
1052 ret = ath10k_ce_recv_buf_enqueue(ce_state, (void *)skb,
1055 ath10k_warn("failed to enqueue to pipe %d: %d\n",
1064 ath10k_pci_rx_pipe_cleanup(pipe_info);
1068 static int ath10k_pci_post_rx(struct ath10k *ar)
1070 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1071 struct ath10k_pci_pipe *pipe_info;
1072 const struct ce_attr *attr;
1073 int pipe_num, ret = 0;
1075 for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
1076 pipe_info = &ar_pci->pipe_info[pipe_num];
1077 attr = &host_ce_config_wlan[pipe_num];
1079 if (attr->dest_nentries == 0)
1082 ret = ath10k_pci_post_rx_pipe(pipe_info,
1083 attr->dest_nentries - 1);
1085 ath10k_warn("failed to post RX buffer for pipe %d: %d\n",
1088 for (; pipe_num >= 0; pipe_num--) {
1089 pipe_info = &ar_pci->pipe_info[pipe_num];
1090 ath10k_pci_rx_pipe_cleanup(pipe_info);
1099 static int ath10k_pci_hif_start(struct ath10k *ar)
1101 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1104 ath10k_pci_free_early_irq(ar);
1105 ath10k_pci_kill_tasklet(ar);
1107 ret = ath10k_pci_request_irq(ar);
1109 ath10k_warn("failed to post RX buffers for all pipes: %d\n",
1114 ret = ath10k_pci_setup_ce_irq(ar);
1116 ath10k_warn("failed to setup CE interrupts: %d\n", ret);
1120 /* Post buffers once to start things off. */
1121 ret = ath10k_pci_post_rx(ar);
1123 ath10k_warn("failed to post RX buffers for all pipes: %d\n",
1128 ar_pci->started = 1;
1132 ath10k_ce_disable_interrupts(ar);
1133 ath10k_pci_free_irq(ar);
1134 ath10k_pci_kill_tasklet(ar);
1136 /* Though there should be no interrupts (device was reset)
1137 * power_down() expects the early IRQ to be installed as per the
1138 * driver lifecycle. */
1139 ret_early = ath10k_pci_request_early_irq(ar);
1141 ath10k_warn("failed to re-enable early irq: %d\n", ret_early);
1146 static void ath10k_pci_rx_pipe_cleanup(struct ath10k_pci_pipe *pipe_info)
1149 struct ath10k_pci *ar_pci;
1150 struct ath10k_ce_pipe *ce_hdl;
1152 struct sk_buff *netbuf;
1155 buf_sz = pipe_info->buf_sz;
1157 /* Unused Copy Engine */
1161 ar = pipe_info->hif_ce_state;
1162 ar_pci = ath10k_pci_priv(ar);
1164 if (!ar_pci->started)
1167 ce_hdl = pipe_info->ce_hdl;
1169 while (ath10k_ce_revoke_recv_next(ce_hdl, (void **)&netbuf,
1171 dma_unmap_single(ar->dev, ATH10K_SKB_CB(netbuf)->paddr,
1172 netbuf->len + skb_tailroom(netbuf),
1174 dev_kfree_skb_any(netbuf);
1178 static void ath10k_pci_tx_pipe_cleanup(struct ath10k_pci_pipe *pipe_info)
1181 struct ath10k_pci *ar_pci;
1182 struct ath10k_ce_pipe *ce_hdl;
1183 struct sk_buff *netbuf;
1185 unsigned int nbytes;
1189 buf_sz = pipe_info->buf_sz;
1191 /* Unused Copy Engine */
1195 ar = pipe_info->hif_ce_state;
1196 ar_pci = ath10k_pci_priv(ar);
1198 if (!ar_pci->started)
1201 ce_hdl = pipe_info->ce_hdl;
1203 while (ath10k_ce_cancel_send_next(ce_hdl, (void **)&netbuf,
1204 &ce_data, &nbytes, &id) == 0) {
1205 /* no need to call tx completion for NULL pointers */
1209 ar_pci->msg_callbacks_current.tx_completion(ar,
1216 * Cleanup residual buffers for device shutdown:
1217 * buffers that were enqueued for receive
1218 * buffers that were to be sent
1219 * Note: Buffers that had completed but which were
1220 * not yet processed are on a completion queue. They
1221 * are handled when the completion thread shuts down.
1223 static void ath10k_pci_buffer_cleanup(struct ath10k *ar)
1225 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1228 for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
1229 struct ath10k_pci_pipe *pipe_info;
1231 pipe_info = &ar_pci->pipe_info[pipe_num];
1232 ath10k_pci_rx_pipe_cleanup(pipe_info);
1233 ath10k_pci_tx_pipe_cleanup(pipe_info);
1237 static void ath10k_pci_ce_deinit(struct ath10k *ar)
1239 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1240 struct ath10k_pci_pipe *pipe_info;
1243 for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
1244 pipe_info = &ar_pci->pipe_info[pipe_num];
1245 if (pipe_info->ce_hdl) {
1246 ath10k_ce_deinit(pipe_info->ce_hdl);
1247 pipe_info->ce_hdl = NULL;
1248 pipe_info->buf_sz = 0;
1253 static void ath10k_pci_hif_stop(struct ath10k *ar)
1255 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1258 ath10k_dbg(ATH10K_DBG_PCI, "%s\n", __func__);
1260 ret = ath10k_ce_disable_interrupts(ar);
1262 ath10k_warn("failed to disable CE interrupts: %d\n", ret);
1264 ath10k_pci_free_irq(ar);
1265 ath10k_pci_kill_tasklet(ar);
1267 ret = ath10k_pci_request_early_irq(ar);
1269 ath10k_warn("failed to re-enable early irq: %d\n", ret);
1271 /* At this point, asynchronous threads are stopped, the target should
1272 * not DMA nor interrupt. We process the leftovers and then free
1273 * everything else up. */
1275 ath10k_pci_buffer_cleanup(ar);
1277 /* Make the sure the device won't access any structures on the host by
1278 * resetting it. The device was fed with PCI CE ringbuffer
1279 * configuration during init. If ringbuffers are freed and the device
1280 * were to access them this could lead to memory corruption on the
1282 ath10k_pci_warm_reset(ar);
1284 ar_pci->started = 0;
1287 static int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
1288 void *req, u32 req_len,
1289 void *resp, u32 *resp_len)
1291 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1292 struct ath10k_pci_pipe *pci_tx = &ar_pci->pipe_info[BMI_CE_NUM_TO_TARG];
1293 struct ath10k_pci_pipe *pci_rx = &ar_pci->pipe_info[BMI_CE_NUM_TO_HOST];
1294 struct ath10k_ce_pipe *ce_tx = pci_tx->ce_hdl;
1295 struct ath10k_ce_pipe *ce_rx = pci_rx->ce_hdl;
1296 dma_addr_t req_paddr = 0;
1297 dma_addr_t resp_paddr = 0;
1298 struct bmi_xfer xfer = {};
1299 void *treq, *tresp = NULL;
1304 if (resp && !resp_len)
1307 if (resp && resp_len && *resp_len == 0)
1310 treq = kmemdup(req, req_len, GFP_KERNEL);
1314 req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE);
1315 ret = dma_mapping_error(ar->dev, req_paddr);
1319 if (resp && resp_len) {
1320 tresp = kzalloc(*resp_len, GFP_KERNEL);
1326 resp_paddr = dma_map_single(ar->dev, tresp, *resp_len,
1328 ret = dma_mapping_error(ar->dev, resp_paddr);
1332 xfer.wait_for_resp = true;
1335 ath10k_ce_recv_buf_enqueue(ce_rx, &xfer, resp_paddr);
1338 init_completion(&xfer.done);
1340 ret = ath10k_ce_send(ce_tx, &xfer, req_paddr, req_len, -1, 0);
1344 ret = ath10k_pci_bmi_wait(ce_tx, ce_rx, &xfer);
1347 unsigned int unused_nbytes;
1348 unsigned int unused_id;
1350 ath10k_ce_cancel_send_next(ce_tx, NULL, &unused_buffer,
1351 &unused_nbytes, &unused_id);
1353 /* non-zero means we did not time out */
1361 ath10k_ce_revoke_recv_next(ce_rx, NULL, &unused_buffer);
1362 dma_unmap_single(ar->dev, resp_paddr,
1363 *resp_len, DMA_FROM_DEVICE);
1366 dma_unmap_single(ar->dev, req_paddr, req_len, DMA_TO_DEVICE);
1368 if (ret == 0 && resp_len) {
1369 *resp_len = min(*resp_len, xfer.resp_len);
1370 memcpy(resp, tresp, xfer.resp_len);
1379 static void ath10k_pci_bmi_send_done(struct ath10k_ce_pipe *ce_state)
1381 struct bmi_xfer *xfer;
1383 unsigned int nbytes;
1384 unsigned int transfer_id;
1386 if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer, &ce_data,
1387 &nbytes, &transfer_id))
1390 if (xfer->wait_for_resp)
1393 complete(&xfer->done);
1396 static void ath10k_pci_bmi_recv_data(struct ath10k_ce_pipe *ce_state)
1398 struct bmi_xfer *xfer;
1400 unsigned int nbytes;
1401 unsigned int transfer_id;
1404 if (ath10k_ce_completed_recv_next(ce_state, (void **)&xfer, &ce_data,
1405 &nbytes, &transfer_id, &flags))
1408 if (!xfer->wait_for_resp) {
1409 ath10k_warn("unexpected: BMI data received; ignoring\n");
1413 xfer->resp_len = nbytes;
1414 complete(&xfer->done);
1417 static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe,
1418 struct ath10k_ce_pipe *rx_pipe,
1419 struct bmi_xfer *xfer)
1421 unsigned long timeout = jiffies + BMI_COMMUNICATION_TIMEOUT_HZ;
1423 while (time_before_eq(jiffies, timeout)) {
1424 ath10k_pci_bmi_send_done(tx_pipe);
1425 ath10k_pci_bmi_recv_data(rx_pipe);
1427 if (completion_done(&xfer->done))
1437 * Map from service/endpoint to Copy Engine.
1438 * This table is derived from the CE_PCI TABLE, above.
1439 * It is passed to the Target at startup for use by firmware.
1441 static const struct service_to_pipe target_service_to_ce_map_wlan[] = {
1443 ATH10K_HTC_SVC_ID_WMI_DATA_VO,
1444 PIPEDIR_OUT, /* out = UL = host -> target */
1448 ATH10K_HTC_SVC_ID_WMI_DATA_VO,
1449 PIPEDIR_IN, /* in = DL = target -> host */
1453 ATH10K_HTC_SVC_ID_WMI_DATA_BK,
1454 PIPEDIR_OUT, /* out = UL = host -> target */
1458 ATH10K_HTC_SVC_ID_WMI_DATA_BK,
1459 PIPEDIR_IN, /* in = DL = target -> host */
1463 ATH10K_HTC_SVC_ID_WMI_DATA_BE,
1464 PIPEDIR_OUT, /* out = UL = host -> target */
1468 ATH10K_HTC_SVC_ID_WMI_DATA_BE,
1469 PIPEDIR_IN, /* in = DL = target -> host */
1473 ATH10K_HTC_SVC_ID_WMI_DATA_VI,
1474 PIPEDIR_OUT, /* out = UL = host -> target */
1478 ATH10K_HTC_SVC_ID_WMI_DATA_VI,
1479 PIPEDIR_IN, /* in = DL = target -> host */
1483 ATH10K_HTC_SVC_ID_WMI_CONTROL,
1484 PIPEDIR_OUT, /* out = UL = host -> target */
1488 ATH10K_HTC_SVC_ID_WMI_CONTROL,
1489 PIPEDIR_IN, /* in = DL = target -> host */
1493 ATH10K_HTC_SVC_ID_RSVD_CTRL,
1494 PIPEDIR_OUT, /* out = UL = host -> target */
1495 0, /* could be moved to 3 (share with WMI) */
1498 ATH10K_HTC_SVC_ID_RSVD_CTRL,
1499 PIPEDIR_IN, /* in = DL = target -> host */
1503 ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS, /* not currently used */
1504 PIPEDIR_OUT, /* out = UL = host -> target */
1508 ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS, /* not currently used */
1509 PIPEDIR_IN, /* in = DL = target -> host */
1513 ATH10K_HTC_SVC_ID_HTT_DATA_MSG,
1514 PIPEDIR_OUT, /* out = UL = host -> target */
1518 ATH10K_HTC_SVC_ID_HTT_DATA_MSG,
1519 PIPEDIR_IN, /* in = DL = target -> host */
1523 /* (Additions here) */
1525 { /* Must be last */
1533 * Send an interrupt to the device to wake up the Target CPU
1534 * so it has an opportunity to notice any changed state.
1536 static int ath10k_pci_wake_target_cpu(struct ath10k *ar)
1541 ret = ath10k_pci_diag_read_access(ar, SOC_CORE_BASE_ADDRESS |
1545 ath10k_warn("failed to read core_ctrl: %d\n", ret);
1549 /* A_INUM_FIRMWARE interrupt to Target CPU */
1550 core_ctrl |= CORE_CTRL_CPU_INTR_MASK;
1552 ret = ath10k_pci_diag_write_access(ar, SOC_CORE_BASE_ADDRESS |
1556 ath10k_warn("failed to set target CPU interrupt mask: %d\n",
1564 static int ath10k_pci_init_config(struct ath10k *ar)
1566 u32 interconnect_targ_addr;
1567 u32 pcie_state_targ_addr = 0;
1568 u32 pipe_cfg_targ_addr = 0;
1569 u32 svc_to_pipe_map = 0;
1570 u32 pcie_config_flags = 0;
1572 u32 ealloc_targ_addr;
1574 u32 flag2_targ_addr;
1577 /* Download to Target the CE Config and the service-to-CE map */
1578 interconnect_targ_addr =
1579 host_interest_item_address(HI_ITEM(hi_interconnect_state));
1581 /* Supply Target-side CE configuration */
1582 ret = ath10k_pci_diag_read_access(ar, interconnect_targ_addr,
1583 &pcie_state_targ_addr);
1585 ath10k_err("Failed to get pcie state addr: %d\n", ret);
1589 if (pcie_state_targ_addr == 0) {
1591 ath10k_err("Invalid pcie state addr\n");
1595 ret = ath10k_pci_diag_read_access(ar, pcie_state_targ_addr +
1596 offsetof(struct pcie_state,
1598 &pipe_cfg_targ_addr);
1600 ath10k_err("Failed to get pipe cfg addr: %d\n", ret);
1604 if (pipe_cfg_targ_addr == 0) {
1606 ath10k_err("Invalid pipe cfg addr\n");
1610 ret = ath10k_pci_diag_write_mem(ar, pipe_cfg_targ_addr,
1611 target_ce_config_wlan,
1612 sizeof(target_ce_config_wlan));
1615 ath10k_err("Failed to write pipe cfg: %d\n", ret);
1619 ret = ath10k_pci_diag_read_access(ar, pcie_state_targ_addr +
1620 offsetof(struct pcie_state,
1624 ath10k_err("Failed to get svc/pipe map: %d\n", ret);
1628 if (svc_to_pipe_map == 0) {
1630 ath10k_err("Invalid svc_to_pipe map\n");
1634 ret = ath10k_pci_diag_write_mem(ar, svc_to_pipe_map,
1635 target_service_to_ce_map_wlan,
1636 sizeof(target_service_to_ce_map_wlan));
1638 ath10k_err("Failed to write svc/pipe map: %d\n", ret);
1642 ret = ath10k_pci_diag_read_access(ar, pcie_state_targ_addr +
1643 offsetof(struct pcie_state,
1645 &pcie_config_flags);
1647 ath10k_err("Failed to get pcie config_flags: %d\n", ret);
1651 pcie_config_flags &= ~PCIE_CONFIG_FLAG_ENABLE_L1;
1653 ret = ath10k_pci_diag_write_mem(ar, pcie_state_targ_addr +
1654 offsetof(struct pcie_state, config_flags),
1656 sizeof(pcie_config_flags));
1658 ath10k_err("Failed to write pcie config_flags: %d\n", ret);
1662 /* configure early allocation */
1663 ealloc_targ_addr = host_interest_item_address(HI_ITEM(hi_early_alloc));
1665 ret = ath10k_pci_diag_read_access(ar, ealloc_targ_addr, &ealloc_value);
1667 ath10k_err("Faile to get early alloc val: %d\n", ret);
1671 /* first bank is switched to IRAM */
1672 ealloc_value |= ((HI_EARLY_ALLOC_MAGIC << HI_EARLY_ALLOC_MAGIC_SHIFT) &
1673 HI_EARLY_ALLOC_MAGIC_MASK);
1674 ealloc_value |= ((1 << HI_EARLY_ALLOC_IRAM_BANKS_SHIFT) &
1675 HI_EARLY_ALLOC_IRAM_BANKS_MASK);
1677 ret = ath10k_pci_diag_write_access(ar, ealloc_targ_addr, ealloc_value);
1679 ath10k_err("Failed to set early alloc val: %d\n", ret);
1683 /* Tell Target to proceed with initialization */
1684 flag2_targ_addr = host_interest_item_address(HI_ITEM(hi_option_flag2));
1686 ret = ath10k_pci_diag_read_access(ar, flag2_targ_addr, &flag2_value);
1688 ath10k_err("Failed to get option val: %d\n", ret);
1692 flag2_value |= HI_OPTION_EARLY_CFG_DONE;
1694 ret = ath10k_pci_diag_write_access(ar, flag2_targ_addr, flag2_value);
1696 ath10k_err("Failed to set option val: %d\n", ret);
1705 static int ath10k_pci_ce_init(struct ath10k *ar)
1707 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1708 struct ath10k_pci_pipe *pipe_info;
1709 const struct ce_attr *attr;
1712 for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
1713 pipe_info = &ar_pci->pipe_info[pipe_num];
1714 pipe_info->pipe_num = pipe_num;
1715 pipe_info->hif_ce_state = ar;
1716 attr = &host_ce_config_wlan[pipe_num];
1718 pipe_info->ce_hdl = ath10k_ce_init(ar, pipe_num, attr);
1719 if (pipe_info->ce_hdl == NULL) {
1720 ath10k_err("failed to initialize CE for pipe: %d\n",
1723 /* It is safe to call it here. It checks if ce_hdl is
1724 * valid for each pipe */
1725 ath10k_pci_ce_deinit(ar);
1729 if (pipe_num == CE_COUNT - 1) {
1731 * Reserve the ultimate CE for
1732 * diagnostic Window support
1734 ar_pci->ce_diag = pipe_info->ce_hdl;
1738 pipe_info->buf_sz = (size_t) (attr->src_sz_max);
1744 static void ath10k_pci_fw_interrupt_handler(struct ath10k *ar)
1746 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1747 u32 fw_indicator_address, fw_indicator;
1749 ath10k_pci_wake(ar);
1751 fw_indicator_address = ar_pci->fw_indicator_address;
1752 fw_indicator = ath10k_pci_read32(ar, fw_indicator_address);
1754 if (fw_indicator & FW_IND_EVENT_PENDING) {
1755 /* ACK: clear Target-side pending event */
1756 ath10k_pci_write32(ar, fw_indicator_address,
1757 fw_indicator & ~FW_IND_EVENT_PENDING);
1759 if (ar_pci->started) {
1760 ath10k_pci_hif_dump_area(ar);
1763 * Probable Target failure before we're prepared
1764 * to handle it. Generally unexpected.
1766 ath10k_warn("early firmware event indicated\n");
1770 ath10k_pci_sleep(ar);
1773 static int ath10k_pci_warm_reset(struct ath10k *ar)
1775 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1779 ath10k_dbg(ATH10K_DBG_BOOT, "boot performing warm chip reset\n");
1781 ret = ath10k_do_pci_wake(ar);
1783 ath10k_err("failed to wake up target: %d\n", ret);
1788 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1789 PCIE_INTR_CAUSE_ADDRESS);
1790 ath10k_dbg(ATH10K_DBG_BOOT, "boot host cpu intr cause: 0x%08x\n", val);
1792 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1794 ath10k_dbg(ATH10K_DBG_BOOT, "boot target cpu intr cause: 0x%08x\n",
1797 /* disable pending irqs */
1798 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1799 PCIE_INTR_ENABLE_ADDRESS, 0);
1801 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
1802 PCIE_INTR_CLR_ADDRESS, ~0);
1806 /* clear fw indicator */
1807 ath10k_pci_write32(ar, ar_pci->fw_indicator_address, 0);
1809 /* clear target LF timer interrupts */
1810 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
1811 SOC_LF_TIMER_CONTROL0_ADDRESS);
1812 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS +
1813 SOC_LF_TIMER_CONTROL0_ADDRESS,
1814 val & ~SOC_LF_TIMER_CONTROL0_ENABLE_MASK);
1817 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
1818 SOC_RESET_CONTROL_ADDRESS);
1819 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
1820 val | SOC_RESET_CONTROL_CE_RST_MASK);
1821 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
1822 SOC_RESET_CONTROL_ADDRESS);
1826 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
1827 val & ~SOC_RESET_CONTROL_CE_RST_MASK);
1828 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
1829 SOC_RESET_CONTROL_ADDRESS);
1833 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1834 PCIE_INTR_CAUSE_ADDRESS);
1835 ath10k_dbg(ATH10K_DBG_BOOT, "boot host cpu intr cause: 0x%08x\n", val);
1837 val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
1839 ath10k_dbg(ATH10K_DBG_BOOT, "boot target cpu intr cause: 0x%08x\n",
1842 /* CPU warm reset */
1843 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
1844 SOC_RESET_CONTROL_ADDRESS);
1845 ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
1846 val | SOC_RESET_CONTROL_CPU_WARM_RST_MASK);
1848 val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
1849 SOC_RESET_CONTROL_ADDRESS);
1850 ath10k_dbg(ATH10K_DBG_BOOT, "boot target reset state: 0x%08x\n", val);
1854 ath10k_dbg(ATH10K_DBG_BOOT, "boot warm reset complete\n");
1856 ath10k_do_pci_sleep(ar);
1860 static int __ath10k_pci_hif_power_up(struct ath10k *ar, bool cold_reset)
1862 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1863 const char *irq_mode;
1867 * Bring the target up cleanly.
1869 * The target may be in an undefined state with an AUX-powered Target
1870 * and a Host in WoW mode. If the Host crashes, loses power, or is
1871 * restarted (without unloading the driver) then the Target is left
1872 * (aux) powered and running. On a subsequent driver load, the Target
1873 * is in an unexpected state. We try to catch that here in order to
1874 * reset the Target and retry the probe.
1877 ret = ath10k_pci_cold_reset(ar);
1879 ret = ath10k_pci_warm_reset(ar);
1882 ath10k_err("failed to reset target: %d\n", ret);
1886 if (!test_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features))
1887 /* Force AWAKE forever */
1888 ath10k_do_pci_wake(ar);
1890 ret = ath10k_pci_ce_init(ar);
1892 ath10k_err("failed to initialize CE: %d\n", ret);
1896 ret = ath10k_ce_disable_interrupts(ar);
1898 ath10k_err("failed to disable CE interrupts: %d\n", ret);
1902 ret = ath10k_pci_init_irq(ar);
1904 ath10k_err("failed to init irqs: %d\n", ret);
1908 ret = ath10k_pci_request_early_irq(ar);
1910 ath10k_err("failed to request early irq: %d\n", ret);
1911 goto err_deinit_irq;
1914 ret = ath10k_pci_wait_for_target_init(ar);
1916 ath10k_err("failed to wait for target to init: %d\n", ret);
1917 goto err_free_early_irq;
1920 ret = ath10k_pci_init_config(ar);
1922 ath10k_err("failed to setup init config: %d\n", ret);
1923 goto err_free_early_irq;
1926 ret = ath10k_pci_wake_target_cpu(ar);
1928 ath10k_err("could not wake up target CPU: %d\n", ret);
1929 goto err_free_early_irq;
1932 if (ar_pci->num_msi_intrs > 1)
1934 else if (ar_pci->num_msi_intrs == 1)
1937 irq_mode = "legacy";
1939 if (!test_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags))
1940 ath10k_info("pci irq %s\n", irq_mode);
1945 ath10k_pci_free_early_irq(ar);
1947 ath10k_pci_deinit_irq(ar);
1949 ath10k_pci_ce_deinit(ar);
1950 ath10k_pci_warm_reset(ar);
1952 if (!test_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features))
1953 ath10k_do_pci_sleep(ar);
1958 static int ath10k_pci_hif_power_up(struct ath10k *ar)
1963 * Hardware CUS232 version 2 has some issues with cold reset and the
1964 * preferred (and safer) way to perform a device reset is through a
1967 * Warm reset doesn't always work though (notably after a firmware
1968 * crash) so fall back to cold reset if necessary.
1970 ret = __ath10k_pci_hif_power_up(ar, false);
1972 ath10k_warn("failed to power up target using warm reset (%d), trying cold reset\n",
1975 ret = __ath10k_pci_hif_power_up(ar, true);
1977 ath10k_err("failed to power up target using cold reset too (%d)\n",
1986 static void ath10k_pci_hif_power_down(struct ath10k *ar)
1988 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
1990 ath10k_pci_free_early_irq(ar);
1991 ath10k_pci_kill_tasklet(ar);
1992 ath10k_pci_deinit_irq(ar);
1993 ath10k_pci_warm_reset(ar);
1995 ath10k_pci_ce_deinit(ar);
1996 if (!test_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features))
1997 ath10k_do_pci_sleep(ar);
2002 #define ATH10K_PCI_PM_CONTROL 0x44
2004 static int ath10k_pci_hif_suspend(struct ath10k *ar)
2006 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2007 struct pci_dev *pdev = ar_pci->pdev;
2010 pci_read_config_dword(pdev, ATH10K_PCI_PM_CONTROL, &val);
2012 if ((val & 0x000000ff) != 0x3) {
2013 pci_save_state(pdev);
2014 pci_disable_device(pdev);
2015 pci_write_config_dword(pdev, ATH10K_PCI_PM_CONTROL,
2016 (val & 0xffffff00) | 0x03);
2022 static int ath10k_pci_hif_resume(struct ath10k *ar)
2024 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2025 struct pci_dev *pdev = ar_pci->pdev;
2028 pci_read_config_dword(pdev, ATH10K_PCI_PM_CONTROL, &val);
2030 if ((val & 0x000000ff) != 0) {
2031 pci_restore_state(pdev);
2032 pci_write_config_dword(pdev, ATH10K_PCI_PM_CONTROL,
2035 * Suspend/Resume resets the PCI configuration space,
2036 * so we have to re-disable the RETRY_TIMEOUT register (0x41)
2037 * to keep PCI Tx retries from interfering with C3 CPU state
2039 pci_read_config_dword(pdev, 0x40, &val);
2041 if ((val & 0x0000ff00) != 0)
2042 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
2049 static const struct ath10k_hif_ops ath10k_pci_hif_ops = {
2050 .tx_sg = ath10k_pci_hif_tx_sg,
2051 .exchange_bmi_msg = ath10k_pci_hif_exchange_bmi_msg,
2052 .start = ath10k_pci_hif_start,
2053 .stop = ath10k_pci_hif_stop,
2054 .map_service_to_pipe = ath10k_pci_hif_map_service_to_pipe,
2055 .get_default_pipe = ath10k_pci_hif_get_default_pipe,
2056 .send_complete_check = ath10k_pci_hif_send_complete_check,
2057 .set_callbacks = ath10k_pci_hif_set_callbacks,
2058 .get_free_queue_number = ath10k_pci_hif_get_free_queue_number,
2059 .power_up = ath10k_pci_hif_power_up,
2060 .power_down = ath10k_pci_hif_power_down,
2062 .suspend = ath10k_pci_hif_suspend,
2063 .resume = ath10k_pci_hif_resume,
2067 static void ath10k_pci_ce_tasklet(unsigned long ptr)
2069 struct ath10k_pci_pipe *pipe = (struct ath10k_pci_pipe *)ptr;
2070 struct ath10k_pci *ar_pci = pipe->ar_pci;
2072 ath10k_ce_per_engine_service(ar_pci->ar, pipe->pipe_num);
2075 static void ath10k_msi_err_tasklet(unsigned long data)
2077 struct ath10k *ar = (struct ath10k *)data;
2079 ath10k_pci_fw_interrupt_handler(ar);
2083 * Handler for a per-engine interrupt on a PARTICULAR CE.
2084 * This is used in cases where each CE has a private MSI interrupt.
2086 static irqreturn_t ath10k_pci_per_engine_handler(int irq, void *arg)
2088 struct ath10k *ar = arg;
2089 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2090 int ce_id = irq - ar_pci->pdev->irq - MSI_ASSIGN_CE_INITIAL;
2092 if (ce_id < 0 || ce_id >= ARRAY_SIZE(ar_pci->pipe_info)) {
2093 ath10k_warn("unexpected/invalid irq %d ce_id %d\n", irq, ce_id);
2098 * NOTE: We are able to derive ce_id from irq because we
2099 * use a one-to-one mapping for CE's 0..5.
2100 * CE's 6 & 7 do not use interrupts at all.
2102 * This mapping must be kept in sync with the mapping
2105 tasklet_schedule(&ar_pci->pipe_info[ce_id].intr);
2109 static irqreturn_t ath10k_pci_msi_fw_handler(int irq, void *arg)
2111 struct ath10k *ar = arg;
2112 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2114 tasklet_schedule(&ar_pci->msi_fw_err);
2119 * Top-level interrupt handler for all PCI interrupts from a Target.
2120 * When a block of MSI interrupts is allocated, this top-level handler
2121 * is not used; instead, we directly call the correct sub-handler.
2123 static irqreturn_t ath10k_pci_interrupt_handler(int irq, void *arg)
2125 struct ath10k *ar = arg;
2126 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2128 if (ar_pci->num_msi_intrs == 0) {
2129 if (!ath10k_pci_irq_pending(ar))
2132 ath10k_pci_disable_and_clear_legacy_irq(ar);
2135 tasklet_schedule(&ar_pci->intr_tq);
2140 static void ath10k_pci_early_irq_tasklet(unsigned long data)
2142 struct ath10k *ar = (struct ath10k *)data;
2143 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2147 ret = ath10k_pci_wake(ar);
2149 ath10k_warn("failed to wake target in early irq tasklet: %d\n",
2154 fw_ind = ath10k_pci_read32(ar, ar_pci->fw_indicator_address);
2155 if (fw_ind & FW_IND_EVENT_PENDING) {
2156 ath10k_pci_write32(ar, ar_pci->fw_indicator_address,
2157 fw_ind & ~FW_IND_EVENT_PENDING);
2159 /* Some structures are unavailable during early boot or at
2160 * driver teardown so just print that the device has crashed. */
2161 ath10k_warn("device crashed - no diagnostics available\n");
2164 ath10k_pci_sleep(ar);
2165 ath10k_pci_enable_legacy_irq(ar);
2168 static void ath10k_pci_tasklet(unsigned long data)
2170 struct ath10k *ar = (struct ath10k *)data;
2171 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2173 ath10k_pci_fw_interrupt_handler(ar); /* FIXME: Handle FW error */
2174 ath10k_ce_per_engine_service_any(ar);
2176 /* Re-enable legacy irq that was disabled in the irq handler */
2177 if (ar_pci->num_msi_intrs == 0)
2178 ath10k_pci_enable_legacy_irq(ar);
2181 static int ath10k_pci_request_irq_msix(struct ath10k *ar)
2183 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2186 ret = request_irq(ar_pci->pdev->irq + MSI_ASSIGN_FW,
2187 ath10k_pci_msi_fw_handler,
2188 IRQF_SHARED, "ath10k_pci", ar);
2190 ath10k_warn("failed to request MSI-X fw irq %d: %d\n",
2191 ar_pci->pdev->irq + MSI_ASSIGN_FW, ret);
2195 for (i = MSI_ASSIGN_CE_INITIAL; i <= MSI_ASSIGN_CE_MAX; i++) {
2196 ret = request_irq(ar_pci->pdev->irq + i,
2197 ath10k_pci_per_engine_handler,
2198 IRQF_SHARED, "ath10k_pci", ar);
2200 ath10k_warn("failed to request MSI-X ce irq %d: %d\n",
2201 ar_pci->pdev->irq + i, ret);
2203 for (i--; i >= MSI_ASSIGN_CE_INITIAL; i--)
2204 free_irq(ar_pci->pdev->irq + i, ar);
2206 free_irq(ar_pci->pdev->irq + MSI_ASSIGN_FW, ar);
2214 static int ath10k_pci_request_irq_msi(struct ath10k *ar)
2216 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2219 ret = request_irq(ar_pci->pdev->irq,
2220 ath10k_pci_interrupt_handler,
2221 IRQF_SHARED, "ath10k_pci", ar);
2223 ath10k_warn("failed to request MSI irq %d: %d\n",
2224 ar_pci->pdev->irq, ret);
2231 static int ath10k_pci_request_irq_legacy(struct ath10k *ar)
2233 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2236 ret = request_irq(ar_pci->pdev->irq,
2237 ath10k_pci_interrupt_handler,
2238 IRQF_SHARED, "ath10k_pci", ar);
2240 ath10k_warn("failed to request legacy irq %d: %d\n",
2241 ar_pci->pdev->irq, ret);
2248 static int ath10k_pci_request_irq(struct ath10k *ar)
2250 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2252 switch (ar_pci->num_msi_intrs) {
2254 return ath10k_pci_request_irq_legacy(ar);
2256 return ath10k_pci_request_irq_msi(ar);
2257 case MSI_NUM_REQUEST:
2258 return ath10k_pci_request_irq_msix(ar);
2261 ath10k_warn("unknown irq configuration upon request\n");
2265 static void ath10k_pci_free_irq(struct ath10k *ar)
2267 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2270 /* There's at least one interrupt irregardless whether its legacy INTR
2271 * or MSI or MSI-X */
2272 for (i = 0; i < max(1, ar_pci->num_msi_intrs); i++)
2273 free_irq(ar_pci->pdev->irq + i, ar);
2276 static void ath10k_pci_init_irq_tasklets(struct ath10k *ar)
2278 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2281 tasklet_init(&ar_pci->intr_tq, ath10k_pci_tasklet, (unsigned long)ar);
2282 tasklet_init(&ar_pci->msi_fw_err, ath10k_msi_err_tasklet,
2284 tasklet_init(&ar_pci->early_irq_tasklet, ath10k_pci_early_irq_tasklet,
2287 for (i = 0; i < CE_COUNT; i++) {
2288 ar_pci->pipe_info[i].ar_pci = ar_pci;
2289 tasklet_init(&ar_pci->pipe_info[i].intr, ath10k_pci_ce_tasklet,
2290 (unsigned long)&ar_pci->pipe_info[i]);
2294 static int ath10k_pci_init_irq(struct ath10k *ar)
2296 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2297 bool msix_supported = test_bit(ATH10K_PCI_FEATURE_MSI_X,
2301 ath10k_pci_init_irq_tasklets(ar);
2303 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_AUTO &&
2304 !test_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags))
2305 ath10k_info("limiting irq mode to: %d\n", ath10k_pci_irq_mode);
2308 if (ath10k_pci_irq_mode == ATH10K_PCI_IRQ_AUTO && msix_supported) {
2309 ar_pci->num_msi_intrs = MSI_NUM_REQUEST;
2310 ret = pci_enable_msi_range(ar_pci->pdev, ar_pci->num_msi_intrs,
2311 ar_pci->num_msi_intrs);
2319 if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_LEGACY) {
2320 ar_pci->num_msi_intrs = 1;
2321 ret = pci_enable_msi(ar_pci->pdev);
2330 * A potential race occurs here: The CORE_BASE write
2331 * depends on target correctly decoding AXI address but
2332 * host won't know when target writes BAR to CORE_CTRL.
2333 * This write might get lost if target has NOT written BAR.
2334 * For now, fix the race by repeating the write in below
2335 * synchronization checking. */
2336 ar_pci->num_msi_intrs = 0;
2338 ret = ath10k_pci_wake(ar);
2340 ath10k_warn("failed to wake target: %d\n", ret);
2344 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
2345 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
2346 ath10k_pci_sleep(ar);
2351 static int ath10k_pci_deinit_irq_legacy(struct ath10k *ar)
2355 ret = ath10k_pci_wake(ar);
2357 ath10k_warn("failed to wake target: %d\n", ret);
2361 ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
2363 ath10k_pci_sleep(ar);
2368 static int ath10k_pci_deinit_irq(struct ath10k *ar)
2370 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2372 switch (ar_pci->num_msi_intrs) {
2374 return ath10k_pci_deinit_irq_legacy(ar);
2377 case MSI_NUM_REQUEST:
2378 pci_disable_msi(ar_pci->pdev);
2381 pci_disable_msi(ar_pci->pdev);
2384 ath10k_warn("unknown irq configuration upon deinit\n");
2388 static int ath10k_pci_wait_for_target_init(struct ath10k *ar)
2390 struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
2391 unsigned long timeout;
2395 ret = ath10k_pci_wake(ar);
2397 ath10k_err("failed to wake up target for init: %d\n", ret);
2401 timeout = jiffies + msecs_to_jiffies(ATH10K_PCI_TARGET_WAIT);
2404 val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
2406 /* target should never return this */
2407 if (val == 0xffffffff)
2410 if (val & FW_IND_INITIALIZED)
2413 if (ar_pci->num_msi_intrs == 0)
2414 /* Fix potential race by repeating CORE_BASE writes */
2415 ath10k_pci_soc_write32(ar, PCIE_INTR_ENABLE_ADDRESS,
2416 PCIE_INTR_FIRMWARE_MASK |
2417 PCIE_INTR_CE_MASK_ALL);
2420 } while (time_before(jiffies, timeout));
2422 if (val == 0xffffffff || !(val & FW_IND_INITIALIZED)) {
2423 ath10k_err("failed to receive initialized event from target: %08x\n",
2430 ath10k_pci_sleep(ar);
2434 static int ath10k_pci_cold_reset(struct ath10k *ar)
2439 ret = ath10k_do_pci_wake(ar);
2441 ath10k_err("failed to wake up target: %d\n",
2446 /* Put Target, including PCIe, into RESET. */
2447 val = ath10k_pci_reg_read32(ar, SOC_GLOBAL_RESET_ADDRESS);
2449 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
2451 for (i = 0; i < ATH_PCI_RESET_WAIT_MAX; i++) {
2452 if (ath10k_pci_reg_read32(ar, RTC_STATE_ADDRESS) &
2453 RTC_STATE_COLD_RESET_MASK)
2458 /* Pull Target, including PCIe, out of RESET. */
2460 ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
2462 for (i = 0; i < ATH_PCI_RESET_WAIT_MAX; i++) {
2463 if (!(ath10k_pci_reg_read32(ar, RTC_STATE_ADDRESS) &
2464 RTC_STATE_COLD_RESET_MASK))
2469 ath10k_do_pci_sleep(ar);
2473 static void ath10k_pci_dump_features(struct ath10k_pci *ar_pci)
2477 for (i = 0; i < ATH10K_PCI_FEATURE_COUNT; i++) {
2478 if (!test_bit(i, ar_pci->features))
2482 case ATH10K_PCI_FEATURE_MSI_X:
2483 ath10k_dbg(ATH10K_DBG_BOOT, "device supports MSI-X\n");
2485 case ATH10K_PCI_FEATURE_SOC_POWER_SAVE:
2486 ath10k_dbg(ATH10K_DBG_BOOT, "QCA98XX SoC power save enabled\n");
2492 static int ath10k_pci_probe(struct pci_dev *pdev,
2493 const struct pci_device_id *pci_dev)
2498 struct ath10k_pci *ar_pci;
2499 u32 lcr_val, chip_id;
2501 ath10k_dbg(ATH10K_DBG_PCI, "%s\n", __func__);
2503 ar_pci = kzalloc(sizeof(*ar_pci), GFP_KERNEL);
2507 ar_pci->pdev = pdev;
2508 ar_pci->dev = &pdev->dev;
2510 switch (pci_dev->device) {
2511 case QCA988X_2_0_DEVICE_ID:
2512 set_bit(ATH10K_PCI_FEATURE_MSI_X, ar_pci->features);
2516 ath10k_err("Unknown device ID: %d\n", pci_dev->device);
2520 if (ath10k_target_ps)
2521 set_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features);
2523 ath10k_pci_dump_features(ar_pci);
2525 ar = ath10k_core_create(ar_pci, ar_pci->dev, &ath10k_pci_hif_ops);
2527 ath10k_err("failed to create driver core\n");
2533 ar_pci->fw_indicator_address = FW_INDICATOR_ADDRESS;
2534 atomic_set(&ar_pci->keep_awake_count, 0);
2536 pci_set_drvdata(pdev, ar);
2539 * Without any knowledge of the Host, the Target may have been reset or
2540 * power cycled and its Config Space may no longer reflect the PCI
2541 * address space that was assigned earlier by the PCI infrastructure.
2544 ret = pci_assign_resource(pdev, BAR_NUM);
2546 ath10k_err("failed to assign PCI space: %d\n", ret);
2550 ret = pci_enable_device(pdev);
2552 ath10k_err("failed to enable PCI device: %d\n", ret);
2556 /* Request MMIO resources */
2557 ret = pci_request_region(pdev, BAR_NUM, "ath");
2559 ath10k_err("failed to request MMIO region: %d\n", ret);
2564 * Target structures have a limit of 32 bit DMA pointers.
2565 * DMA pointers can be wider than 32 bits by default on some systems.
2567 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2569 ath10k_err("failed to set DMA mask to 32-bit: %d\n", ret);
2573 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2575 ath10k_err("failed to set consistent DMA mask to 32-bit\n");
2579 /* Set bus master bit in PCI_COMMAND to enable DMA */
2580 pci_set_master(pdev);
2583 * Temporary FIX: disable ASPM
2584 * Will be removed after the OTP is programmed
2586 pci_read_config_dword(pdev, 0x80, &lcr_val);
2587 pci_write_config_dword(pdev, 0x80, (lcr_val & 0xffffff00));
2589 /* Arrange for access to Target SoC registers. */
2590 mem = pci_iomap(pdev, BAR_NUM, 0);
2592 ath10k_err("failed to perform IOMAP for BAR%d\n", BAR_NUM);
2599 spin_lock_init(&ar_pci->ce_lock);
2601 ret = ath10k_do_pci_wake(ar);
2603 ath10k_err("Failed to get chip id: %d\n", ret);
2607 chip_id = ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS);
2609 ath10k_do_pci_sleep(ar);
2611 ath10k_dbg(ATH10K_DBG_BOOT, "boot pci_mem 0x%p\n", ar_pci->mem);
2613 ret = ath10k_core_register(ar, chip_id);
2615 ath10k_err("failed to register driver core: %d\n", ret);
2622 pci_iounmap(pdev, mem);
2624 pci_clear_master(pdev);
2626 pci_release_region(pdev, BAR_NUM);
2628 pci_disable_device(pdev);
2630 ath10k_core_destroy(ar);
2632 /* call HIF PCI free here */
2638 static void ath10k_pci_remove(struct pci_dev *pdev)
2640 struct ath10k *ar = pci_get_drvdata(pdev);
2641 struct ath10k_pci *ar_pci;
2643 ath10k_dbg(ATH10K_DBG_PCI, "%s\n", __func__);
2648 ar_pci = ath10k_pci_priv(ar);
2653 tasklet_kill(&ar_pci->msi_fw_err);
2655 ath10k_core_unregister(ar);
2657 pci_iounmap(pdev, ar_pci->mem);
2658 pci_release_region(pdev, BAR_NUM);
2659 pci_clear_master(pdev);
2660 pci_disable_device(pdev);
2662 ath10k_core_destroy(ar);
2666 MODULE_DEVICE_TABLE(pci, ath10k_pci_id_table);
2668 static struct pci_driver ath10k_pci_driver = {
2669 .name = "ath10k_pci",
2670 .id_table = ath10k_pci_id_table,
2671 .probe = ath10k_pci_probe,
2672 .remove = ath10k_pci_remove,
2675 static int __init ath10k_pci_init(void)
2679 ret = pci_register_driver(&ath10k_pci_driver);
2681 ath10k_err("failed to register PCI driver: %d\n", ret);
2685 module_init(ath10k_pci_init);
2687 static void __exit ath10k_pci_exit(void)
2689 pci_unregister_driver(&ath10k_pci_driver);
2692 module_exit(ath10k_pci_exit);
2694 MODULE_AUTHOR("Qualcomm Atheros");
2695 MODULE_DESCRIPTION("Driver support for Atheros QCA988X PCIe devices");
2696 MODULE_LICENSE("Dual BSD/GPL");
2697 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_FW_FILE);
2698 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_OTP_FILE);
2699 MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_BOARD_DATA_FILE);