--- /dev/null
+/*
+ * Copyright (c) 2005-2011 Atheros Communications Inc.
+ * Copyright (c) 2011-2013 Qualcomm Atheros, 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/pci.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/bitops.h>
+
+#include "core.h"
+#include "debug.h"
+
+#include "targaddrs.h"
+#include "bmi.h"
+
+#include "hif.h"
+#include "htc.h"
+
+#include "ce.h"
+#include "pci.h"
+
+enum ath10k_pci_irq_mode {
+ ATH10K_PCI_IRQ_AUTO = 0,
+ ATH10K_PCI_IRQ_LEGACY = 1,
+ ATH10K_PCI_IRQ_MSI = 2,
+};
+
+enum ath10k_pci_reset_mode {
+ ATH10K_PCI_RESET_AUTO = 0,
+ ATH10K_PCI_RESET_WARM_ONLY = 1,
+};
+
+static unsigned int ath10k_pci_irq_mode = ATH10K_PCI_IRQ_AUTO;
+static unsigned int ath10k_pci_reset_mode = ATH10K_PCI_RESET_AUTO;
+
+module_param_named(irq_mode, ath10k_pci_irq_mode, uint, 0644);
+MODULE_PARM_DESC(irq_mode, "0: auto, 1: legacy, 2: msi (default: 0)");
+
+module_param_named(reset_mode, ath10k_pci_reset_mode, uint, 0644);
+MODULE_PARM_DESC(reset_mode, "0: auto, 1: warm only (default: 0)");
+
+/* how long wait to wait for target to initialise, in ms */
+#define ATH10K_PCI_TARGET_WAIT 3000
+#define ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS 3
+
+#define QCA988X_2_0_DEVICE_ID (0x003c)
+#define QCA6174_2_1_DEVICE_ID (0x003e)
+
+static const struct pci_device_id ath10k_pci_id_table[] = {
+ { PCI_VDEVICE(ATHEROS, QCA988X_2_0_DEVICE_ID) }, /* PCI-E QCA988X V2 */
+ { PCI_VDEVICE(ATHEROS, QCA6174_2_1_DEVICE_ID) }, /* PCI-E QCA6174 V2.1 */
+ {0}
+};
+
+static const struct ath10k_pci_supp_chip ath10k_pci_supp_chips[] = {
+ /* QCA988X pre 2.0 chips are not supported because they need some nasty
+ * hacks. ath10k doesn't have them and these devices crash horribly
+ * because of that.
+ */
+ { QCA988X_2_0_DEVICE_ID, QCA988X_HW_2_0_CHIP_ID_REV },
+ { QCA6174_2_1_DEVICE_ID, QCA6174_HW_2_1_CHIP_ID_REV },
+ { QCA6174_2_1_DEVICE_ID, QCA6174_HW_2_2_CHIP_ID_REV },
+ { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_0_CHIP_ID_REV },
+ { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_1_CHIP_ID_REV },
+ { QCA6174_2_1_DEVICE_ID, QCA6174_HW_3_2_CHIP_ID_REV },
+};
+
+static void ath10k_pci_buffer_cleanup(struct ath10k *ar);
+static int ath10k_pci_cold_reset(struct ath10k *ar);
+static int ath10k_pci_warm_reset(struct ath10k *ar);
+static int ath10k_pci_wait_for_target_init(struct ath10k *ar);
+static int ath10k_pci_init_irq(struct ath10k *ar);
+static int ath10k_pci_deinit_irq(struct ath10k *ar);
+static int ath10k_pci_request_irq(struct ath10k *ar);
+static void ath10k_pci_free_irq(struct ath10k *ar);
+static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe,
+ struct ath10k_ce_pipe *rx_pipe,
+ struct bmi_xfer *xfer);
+
+static const struct ce_attr host_ce_config_wlan[] = {
+ /* CE0: host->target HTC control and raw streams */
+ {
+ .flags = CE_ATTR_FLAGS,
+ .src_nentries = 16,
+ .src_sz_max = 256,
+ .dest_nentries = 0,
+ },
+
+ /* CE1: target->host HTT + HTC control */
+ {
+ .flags = CE_ATTR_FLAGS,
+ .src_nentries = 0,
+ .src_sz_max = 2048,
+ .dest_nentries = 512,
+ },
+
+ /* CE2: target->host WMI */
+ {
+ .flags = CE_ATTR_FLAGS,
+ .src_nentries = 0,
+ .src_sz_max = 2048,
+ .dest_nentries = 32,
+ },
+
+ /* CE3: host->target WMI */
+ {
+ .flags = CE_ATTR_FLAGS,
+ .src_nentries = 32,
+ .src_sz_max = 2048,
+ .dest_nentries = 0,
+ },
+
+ /* CE4: host->target HTT */
+ {
+ .flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
+ .src_nentries = CE_HTT_H2T_MSG_SRC_NENTRIES,
+ .src_sz_max = 256,
+ .dest_nentries = 0,
+ },
+
+ /* CE5: unused */
+ {
+ .flags = CE_ATTR_FLAGS,
+ .src_nentries = 0,
+ .src_sz_max = 0,
+ .dest_nentries = 0,
+ },
+
+ /* CE6: target autonomous hif_memcpy */
+ {
+ .flags = CE_ATTR_FLAGS,
+ .src_nentries = 0,
+ .src_sz_max = 0,
+ .dest_nentries = 0,
+ },
+
+ /* CE7: ce_diag, the Diagnostic Window */
+ {
+ .flags = CE_ATTR_FLAGS,
+ .src_nentries = 2,
+ .src_sz_max = DIAG_TRANSFER_LIMIT,
+ .dest_nentries = 2,
+ },
+};
+
+/* Target firmware's Copy Engine configuration. */
+static const struct ce_pipe_config target_ce_config_wlan[] = {
+ /* CE0: host->target HTC control and raw streams */
+ {
+ .pipenum = __cpu_to_le32(0),
+ .pipedir = __cpu_to_le32(PIPEDIR_OUT),
+ .nentries = __cpu_to_le32(32),
+ .nbytes_max = __cpu_to_le32(256),
+ .flags = __cpu_to_le32(CE_ATTR_FLAGS),
+ .reserved = __cpu_to_le32(0),
+ },
+
+ /* CE1: target->host HTT + HTC control */
+ {
+ .pipenum = __cpu_to_le32(1),
+ .pipedir = __cpu_to_le32(PIPEDIR_IN),
+ .nentries = __cpu_to_le32(32),
+ .nbytes_max = __cpu_to_le32(2048),
+ .flags = __cpu_to_le32(CE_ATTR_FLAGS),
+ .reserved = __cpu_to_le32(0),
+ },
+
+ /* CE2: target->host WMI */
+ {
+ .pipenum = __cpu_to_le32(2),
+ .pipedir = __cpu_to_le32(PIPEDIR_IN),
+ .nentries = __cpu_to_le32(32),
+ .nbytes_max = __cpu_to_le32(2048),
+ .flags = __cpu_to_le32(CE_ATTR_FLAGS),
+ .reserved = __cpu_to_le32(0),
+ },
+
+ /* CE3: host->target WMI */
+ {
+ .pipenum = __cpu_to_le32(3),
+ .pipedir = __cpu_to_le32(PIPEDIR_OUT),
+ .nentries = __cpu_to_le32(32),
+ .nbytes_max = __cpu_to_le32(2048),
+ .flags = __cpu_to_le32(CE_ATTR_FLAGS),
+ .reserved = __cpu_to_le32(0),
+ },
+
+ /* CE4: host->target HTT */
+ {
+ .pipenum = __cpu_to_le32(4),
+ .pipedir = __cpu_to_le32(PIPEDIR_OUT),
+ .nentries = __cpu_to_le32(256),
+ .nbytes_max = __cpu_to_le32(256),
+ .flags = __cpu_to_le32(CE_ATTR_FLAGS),
+ .reserved = __cpu_to_le32(0),
+ },
+
+ /* NB: 50% of src nentries, since tx has 2 frags */
+
+ /* CE5: unused */
+ {
+ .pipenum = __cpu_to_le32(5),
+ .pipedir = __cpu_to_le32(PIPEDIR_OUT),
+ .nentries = __cpu_to_le32(32),
+ .nbytes_max = __cpu_to_le32(2048),
+ .flags = __cpu_to_le32(CE_ATTR_FLAGS),
+ .reserved = __cpu_to_le32(0),
+ },
+
+ /* CE6: Reserved for target autonomous hif_memcpy */
+ {
+ .pipenum = __cpu_to_le32(6),
+ .pipedir = __cpu_to_le32(PIPEDIR_INOUT),
+ .nentries = __cpu_to_le32(32),
+ .nbytes_max = __cpu_to_le32(4096),
+ .flags = __cpu_to_le32(CE_ATTR_FLAGS),
+ .reserved = __cpu_to_le32(0),
+ },
+
+ /* CE7 used only by Host */
+};
+
+/*
+ * Map from service/endpoint to Copy Engine.
+ * This table is derived from the CE_PCI TABLE, above.
+ * It is passed to the Target at startup for use by firmware.
+ */
+static const struct service_to_pipe target_service_to_ce_map_wlan[] = {
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
+ __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
+ __cpu_to_le32(3),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VO),
+ __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
+ __cpu_to_le32(2),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
+ __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
+ __cpu_to_le32(3),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BK),
+ __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
+ __cpu_to_le32(2),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
+ __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
+ __cpu_to_le32(3),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_BE),
+ __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
+ __cpu_to_le32(2),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
+ __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
+ __cpu_to_le32(3),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_DATA_VI),
+ __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
+ __cpu_to_le32(2),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
+ __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
+ __cpu_to_le32(3),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_WMI_CONTROL),
+ __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
+ __cpu_to_le32(2),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
+ __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
+ __cpu_to_le32(0),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_RSVD_CTRL),
+ __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
+ __cpu_to_le32(1),
+ },
+ { /* not used */
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
+ __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
+ __cpu_to_le32(0),
+ },
+ { /* not used */
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_TEST_RAW_STREAMS),
+ __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
+ __cpu_to_le32(1),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
+ __cpu_to_le32(PIPEDIR_OUT), /* out = UL = host -> target */
+ __cpu_to_le32(4),
+ },
+ {
+ __cpu_to_le32(ATH10K_HTC_SVC_ID_HTT_DATA_MSG),
+ __cpu_to_le32(PIPEDIR_IN), /* in = DL = target -> host */
+ __cpu_to_le32(1),
+ },
+
+ /* (Additions here) */
+
+ { /* must be last */
+ __cpu_to_le32(0),
+ __cpu_to_le32(0),
+ __cpu_to_le32(0),
+ },
+};
+
+static bool ath10k_pci_irq_pending(struct ath10k *ar)
+{
+ u32 cause;
+
+ /* Check if the shared legacy irq is for us */
+ cause = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
+ PCIE_INTR_CAUSE_ADDRESS);
+ if (cause & (PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL))
+ return true;
+
+ return false;
+}
+
+static void ath10k_pci_disable_and_clear_legacy_irq(struct ath10k *ar)
+{
+ /* IMPORTANT: INTR_CLR register has to be set after
+ * INTR_ENABLE is set to 0, otherwise interrupt can not be
+ * really cleared. */
+ ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
+ 0);
+ ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_CLR_ADDRESS,
+ PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
+
+ /* IMPORTANT: this extra read transaction is required to
+ * flush the posted write buffer. */
+ (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
+ PCIE_INTR_ENABLE_ADDRESS);
+}
+
+static void ath10k_pci_enable_legacy_irq(struct ath10k *ar)
+{
+ ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS +
+ PCIE_INTR_ENABLE_ADDRESS,
+ PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
+
+ /* IMPORTANT: this extra read transaction is required to
+ * flush the posted write buffer. */
+ (void)ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
+ PCIE_INTR_ENABLE_ADDRESS);
+}
+
+static inline const char *ath10k_pci_get_irq_method(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+ if (ar_pci->num_msi_intrs > 1)
+ return "msi-x";
+
+ if (ar_pci->num_msi_intrs == 1)
+ return "msi";
+
+ return "legacy";
+}
+
+static int __ath10k_pci_rx_post_buf(struct ath10k_pci_pipe *pipe)
+{
+ struct ath10k *ar = pipe->hif_ce_state;
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
+ struct sk_buff *skb;
+ dma_addr_t paddr;
+ int ret;
+
+ lockdep_assert_held(&ar_pci->ce_lock);
+
+ skb = dev_alloc_skb(pipe->buf_sz);
+ if (!skb)
+ return -ENOMEM;
+
+ WARN_ONCE((unsigned long)skb->data & 3, "unaligned skb");
+
+ paddr = dma_map_single(ar->dev, skb->data,
+ skb->len + skb_tailroom(skb),
+ DMA_FROM_DEVICE);
+ if (unlikely(dma_mapping_error(ar->dev, paddr))) {
+ ath10k_warn(ar, "failed to dma map pci rx buf\n");
+ dev_kfree_skb_any(skb);
+ return -EIO;
+ }
+
+ ATH10K_SKB_RXCB(skb)->paddr = paddr;
+
+ ret = __ath10k_ce_rx_post_buf(ce_pipe, skb, paddr);
+ if (ret) {
+ ath10k_warn(ar, "failed to post pci rx buf: %d\n", ret);
+ dma_unmap_single(ar->dev, paddr, skb->len + skb_tailroom(skb),
+ DMA_FROM_DEVICE);
+ dev_kfree_skb_any(skb);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void __ath10k_pci_rx_post_pipe(struct ath10k_pci_pipe *pipe)
+{
+ struct ath10k *ar = pipe->hif_ce_state;
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ struct ath10k_ce_pipe *ce_pipe = pipe->ce_hdl;
+ int ret, num;
+
+ lockdep_assert_held(&ar_pci->ce_lock);
+
+ if (pipe->buf_sz == 0)
+ return;
+
+ if (!ce_pipe->dest_ring)
+ return;
+
+ num = __ath10k_ce_rx_num_free_bufs(ce_pipe);
+ while (num--) {
+ ret = __ath10k_pci_rx_post_buf(pipe);
+ if (ret) {
+ ath10k_warn(ar, "failed to post pci rx buf: %d\n", ret);
+ mod_timer(&ar_pci->rx_post_retry, jiffies +
+ ATH10K_PCI_RX_POST_RETRY_MS);
+ break;
+ }
+ }
+}
+
+static void ath10k_pci_rx_post_pipe(struct ath10k_pci_pipe *pipe)
+{
+ struct ath10k *ar = pipe->hif_ce_state;
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+ spin_lock_bh(&ar_pci->ce_lock);
+ __ath10k_pci_rx_post_pipe(pipe);
+ spin_unlock_bh(&ar_pci->ce_lock);
+}
+
+static void ath10k_pci_rx_post(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int i;
+
+ spin_lock_bh(&ar_pci->ce_lock);
+ for (i = 0; i < CE_COUNT; i++)
+ __ath10k_pci_rx_post_pipe(&ar_pci->pipe_info[i]);
+ spin_unlock_bh(&ar_pci->ce_lock);
+}
+
+static void ath10k_pci_rx_replenish_retry(unsigned long ptr)
+{
+ struct ath10k *ar = (void *)ptr;
+
+ ath10k_pci_rx_post(ar);
+}
+
+/*
+ * Diagnostic read/write access is provided for startup/config/debug usage.
+ * Caller must guarantee proper alignment, when applicable, and single user
+ * at any moment.
+ */
+static int ath10k_pci_diag_read_mem(struct ath10k *ar, u32 address, void *data,
+ int nbytes)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int ret = 0;
+ u32 buf;
+ unsigned int completed_nbytes, orig_nbytes, remaining_bytes;
+ unsigned int id;
+ unsigned int flags;
+ struct ath10k_ce_pipe *ce_diag;
+ /* Host buffer address in CE space */
+ u32 ce_data;
+ dma_addr_t ce_data_base = 0;
+ void *data_buf = NULL;
+ int i;
+
+ spin_lock_bh(&ar_pci->ce_lock);
+
+ ce_diag = ar_pci->ce_diag;
+
+ /*
+ * Allocate a temporary bounce buffer to hold caller's data
+ * to be DMA'ed from Target. This guarantees
+ * 1) 4-byte alignment
+ * 2) Buffer in DMA-able space
+ */
+ orig_nbytes = nbytes;
+ data_buf = (unsigned char *)dma_alloc_coherent(ar->dev,
+ orig_nbytes,
+ &ce_data_base,
+ GFP_ATOMIC);
+
+ if (!data_buf) {
+ ret = -ENOMEM;
+ goto done;
+ }
+ memset(data_buf, 0, orig_nbytes);
+
+ remaining_bytes = orig_nbytes;
+ ce_data = ce_data_base;
+ while (remaining_bytes) {
+ nbytes = min_t(unsigned int, remaining_bytes,
+ DIAG_TRANSFER_LIMIT);
+
+ ret = __ath10k_ce_rx_post_buf(ce_diag, NULL, ce_data);
+ if (ret != 0)
+ goto done;
+
+ /* Request CE to send from Target(!) address to Host buffer */
+ /*
+ * The address supplied by the caller is in the
+ * Target CPU virtual address space.
+ *
+ * In order to use this address with the diagnostic CE,
+ * convert it from Target CPU virtual address space
+ * to CE address space
+ */
+ address = TARG_CPU_SPACE_TO_CE_SPACE(ar, ar_pci->mem,
+ address);
+
+ ret = ath10k_ce_send_nolock(ce_diag, NULL, (u32)address, nbytes, 0,
+ 0);
+ if (ret)
+ goto done;
+
+ i = 0;
+ while (ath10k_ce_completed_send_next_nolock(ce_diag, NULL, &buf,
+ &completed_nbytes,
+ &id) != 0) {
+ mdelay(1);
+ if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
+ ret = -EBUSY;
+ goto done;
+ }
+ }
+
+ if (nbytes != completed_nbytes) {
+ ret = -EIO;
+ goto done;
+ }
+
+ if (buf != (u32)address) {
+ ret = -EIO;
+ goto done;
+ }
+
+ i = 0;
+ while (ath10k_ce_completed_recv_next_nolock(ce_diag, NULL, &buf,
+ &completed_nbytes,
+ &id, &flags) != 0) {
+ mdelay(1);
+
+ if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
+ ret = -EBUSY;
+ goto done;
+ }
+ }
+
+ if (nbytes != completed_nbytes) {
+ ret = -EIO;
+ goto done;
+ }
+
+ if (buf != ce_data) {
+ ret = -EIO;
+ goto done;
+ }
+
+ remaining_bytes -= nbytes;
+ address += nbytes;
+ ce_data += nbytes;
+ }
+
+done:
+ if (ret == 0)
+ memcpy(data, data_buf, orig_nbytes);
+ else
+ ath10k_warn(ar, "failed to read diag value at 0x%x: %d\n",
+ address, ret);
+
+ if (data_buf)
+ dma_free_coherent(ar->dev, orig_nbytes, data_buf,
+ ce_data_base);
+
+ spin_unlock_bh(&ar_pci->ce_lock);
+
+ return ret;
+}
+
+static int ath10k_pci_diag_read32(struct ath10k *ar, u32 address, u32 *value)
+{
+ __le32 val = 0;
+ int ret;
+
+ ret = ath10k_pci_diag_read_mem(ar, address, &val, sizeof(val));
+ *value = __le32_to_cpu(val);
+
+ return ret;
+}
+
+static int __ath10k_pci_diag_read_hi(struct ath10k *ar, void *dest,
+ u32 src, u32 len)
+{
+ u32 host_addr, addr;
+ int ret;
+
+ host_addr = host_interest_item_address(src);
+
+ ret = ath10k_pci_diag_read32(ar, host_addr, &addr);
+ if (ret != 0) {
+ ath10k_warn(ar, "failed to get memcpy hi address for firmware address %d: %d\n",
+ src, ret);
+ return ret;
+ }
+
+ ret = ath10k_pci_diag_read_mem(ar, addr, dest, len);
+ if (ret != 0) {
+ ath10k_warn(ar, "failed to memcpy firmware memory from %d (%d B): %d\n",
+ addr, len, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+#define ath10k_pci_diag_read_hi(ar, dest, src, len) \
+ __ath10k_pci_diag_read_hi(ar, dest, HI_ITEM(src), len)
+
+static int ath10k_pci_diag_write_mem(struct ath10k *ar, u32 address,
+ const void *data, int nbytes)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int ret = 0;
+ u32 buf;
+ unsigned int completed_nbytes, orig_nbytes, remaining_bytes;
+ unsigned int id;
+ unsigned int flags;
+ struct ath10k_ce_pipe *ce_diag;
+ void *data_buf = NULL;
+ u32 ce_data; /* Host buffer address in CE space */
+ dma_addr_t ce_data_base = 0;
+ int i;
+
+ spin_lock_bh(&ar_pci->ce_lock);
+
+ ce_diag = ar_pci->ce_diag;
+
+ /*
+ * Allocate a temporary bounce buffer to hold caller's data
+ * to be DMA'ed to Target. This guarantees
+ * 1) 4-byte alignment
+ * 2) Buffer in DMA-able space
+ */
+ orig_nbytes = nbytes;
+ data_buf = (unsigned char *)dma_alloc_coherent(ar->dev,
+ orig_nbytes,
+ &ce_data_base,
+ GFP_ATOMIC);
+ if (!data_buf) {
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ /* Copy caller's data to allocated DMA buf */
+ memcpy(data_buf, data, orig_nbytes);
+
+ /*
+ * The address supplied by the caller is in the
+ * Target CPU virtual address space.
+ *
+ * In order to use this address with the diagnostic CE,
+ * convert it from
+ * Target CPU virtual address space
+ * to
+ * CE address space
+ */
+ address = TARG_CPU_SPACE_TO_CE_SPACE(ar, ar_pci->mem, address);
+
+ remaining_bytes = orig_nbytes;
+ ce_data = ce_data_base;
+ while (remaining_bytes) {
+ /* FIXME: check cast */
+ nbytes = min_t(int, remaining_bytes, DIAG_TRANSFER_LIMIT);
+
+ /* Set up to receive directly into Target(!) address */
+ ret = __ath10k_ce_rx_post_buf(ce_diag, NULL, address);
+ if (ret != 0)
+ goto done;
+
+ /*
+ * Request CE to send caller-supplied data that
+ * was copied to bounce buffer to Target(!) address.
+ */
+ ret = ath10k_ce_send_nolock(ce_diag, NULL, (u32)ce_data,
+ nbytes, 0, 0);
+ if (ret != 0)
+ goto done;
+
+ i = 0;
+ while (ath10k_ce_completed_send_next_nolock(ce_diag, NULL, &buf,
+ &completed_nbytes,
+ &id) != 0) {
+ mdelay(1);
+
+ if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
+ ret = -EBUSY;
+ goto done;
+ }
+ }
+
+ if (nbytes != completed_nbytes) {
+ ret = -EIO;
+ goto done;
+ }
+
+ if (buf != ce_data) {
+ ret = -EIO;
+ goto done;
+ }
+
+ i = 0;
+ while (ath10k_ce_completed_recv_next_nolock(ce_diag, NULL, &buf,
+ &completed_nbytes,
+ &id, &flags) != 0) {
+ mdelay(1);
+
+ if (i++ > DIAG_ACCESS_CE_TIMEOUT_MS) {
+ ret = -EBUSY;
+ goto done;
+ }
+ }
+
+ if (nbytes != completed_nbytes) {
+ ret = -EIO;
+ goto done;
+ }
+
+ if (buf != address) {
+ ret = -EIO;
+ goto done;
+ }
+
+ remaining_bytes -= nbytes;
+ address += nbytes;
+ ce_data += nbytes;
+ }
+
+done:
+ if (data_buf) {
+ dma_free_coherent(ar->dev, orig_nbytes, data_buf,
+ ce_data_base);
+ }
+
+ if (ret != 0)
+ ath10k_warn(ar, "failed to write diag value at 0x%x: %d\n",
+ address, ret);
+
+ spin_unlock_bh(&ar_pci->ce_lock);
+
+ return ret;
+}
+
+static int ath10k_pci_diag_write32(struct ath10k *ar, u32 address, u32 value)
+{
+ __le32 val = __cpu_to_le32(value);
+
+ return ath10k_pci_diag_write_mem(ar, address, &val, sizeof(val));
+}
+
+static bool ath10k_pci_is_awake(struct ath10k *ar)
+{
+ u32 val = ath10k_pci_reg_read32(ar, RTC_STATE_ADDRESS);
+
+ return RTC_STATE_V_GET(val) == RTC_STATE_V_ON;
+}
+
+static int ath10k_pci_wake_wait(struct ath10k *ar)
+{
+ int tot_delay = 0;
+ int curr_delay = 5;
+
+ while (tot_delay < PCIE_WAKE_TIMEOUT) {
+ if (ath10k_pci_is_awake(ar))
+ return 0;
+
+ udelay(curr_delay);
+ tot_delay += curr_delay;
+
+ if (curr_delay < 50)
+ curr_delay += 5;
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int ath10k_pci_wake(struct ath10k *ar)
+{
+ ath10k_pci_reg_write32(ar, PCIE_SOC_WAKE_ADDRESS,
+ PCIE_SOC_WAKE_V_MASK);
+ return ath10k_pci_wake_wait(ar);
+}
+
+static void ath10k_pci_sleep(struct ath10k *ar)
+{
+ ath10k_pci_reg_write32(ar, PCIE_SOC_WAKE_ADDRESS,
+ PCIE_SOC_WAKE_RESET);
+}
+
+/* Called by lower (CE) layer when a send to Target completes. */
+static void ath10k_pci_ce_send_done(struct ath10k_ce_pipe *ce_state)
+{
+ struct ath10k *ar = ce_state->ar;
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ struct ath10k_hif_cb *cb = &ar_pci->msg_callbacks_current;
+ struct sk_buff_head list;
+ struct sk_buff *skb;
+ u32 ce_data;
+ unsigned int nbytes;
+ unsigned int transfer_id;
+
+ __skb_queue_head_init(&list);
+ while (ath10k_ce_completed_send_next(ce_state, (void **)&skb, &ce_data,
+ &nbytes, &transfer_id) == 0) {
+ /* no need to call tx completion for NULL pointers */
+ if (skb == NULL)
+ continue;
+
+ __skb_queue_tail(&list, skb);
+ }
+
+ while ((skb = __skb_dequeue(&list)))
+ cb->tx_completion(ar, skb);
+}
+
+/* Called by lower (CE) layer when data is received from the Target. */
+static void ath10k_pci_ce_recv_data(struct ath10k_ce_pipe *ce_state)
+{
+ struct ath10k *ar = ce_state->ar;
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ struct ath10k_pci_pipe *pipe_info = &ar_pci->pipe_info[ce_state->id];
+ struct ath10k_hif_cb *cb = &ar_pci->msg_callbacks_current;
+ struct sk_buff *skb;
+ struct sk_buff_head list;
+ void *transfer_context;
+ u32 ce_data;
+ unsigned int nbytes, max_nbytes;
+ unsigned int transfer_id;
+ unsigned int flags;
+
+ __skb_queue_head_init(&list);
+ while (ath10k_ce_completed_recv_next(ce_state, &transfer_context,
+ &ce_data, &nbytes, &transfer_id,
+ &flags) == 0) {
+ skb = transfer_context;
+ max_nbytes = skb->len + skb_tailroom(skb);
+ dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
+ max_nbytes, DMA_FROM_DEVICE);
+
+ if (unlikely(max_nbytes < nbytes)) {
+ ath10k_warn(ar, "rxed more than expected (nbytes %d, max %d)",
+ nbytes, max_nbytes);
+ dev_kfree_skb_any(skb);
+ continue;
+ }
+
+ skb_put(skb, nbytes);
+ __skb_queue_tail(&list, skb);
+ }
+
+ while ((skb = __skb_dequeue(&list))) {
+ ath10k_dbg(ar, ATH10K_DBG_PCI, "pci rx ce pipe %d len %d\n",
+ ce_state->id, skb->len);
+ ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci rx: ",
+ skb->data, skb->len);
+
+ cb->rx_completion(ar, skb);
+ }
+
+ ath10k_pci_rx_post_pipe(pipe_info);
+}
+
+static int ath10k_pci_hif_tx_sg(struct ath10k *ar, u8 pipe_id,
+ struct ath10k_hif_sg_item *items, int n_items)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ struct ath10k_pci_pipe *pci_pipe = &ar_pci->pipe_info[pipe_id];
+ struct ath10k_ce_pipe *ce_pipe = pci_pipe->ce_hdl;
+ struct ath10k_ce_ring *src_ring = ce_pipe->src_ring;
+ unsigned int nentries_mask;
+ unsigned int sw_index;
+ unsigned int write_index;
+ int err, i = 0;
+
+ spin_lock_bh(&ar_pci->ce_lock);
+
+ nentries_mask = src_ring->nentries_mask;
+ sw_index = src_ring->sw_index;
+ write_index = src_ring->write_index;
+
+ if (unlikely(CE_RING_DELTA(nentries_mask,
+ write_index, sw_index - 1) < n_items)) {
+ err = -ENOBUFS;
+ goto err;
+ }
+
+ for (i = 0; i < n_items - 1; i++) {
+ ath10k_dbg(ar, ATH10K_DBG_PCI,
+ "pci tx item %d paddr 0x%08x len %d n_items %d\n",
+ i, items[i].paddr, items[i].len, n_items);
+ ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
+ items[i].vaddr, items[i].len);
+
+ err = ath10k_ce_send_nolock(ce_pipe,
+ items[i].transfer_context,
+ items[i].paddr,
+ items[i].len,
+ items[i].transfer_id,
+ CE_SEND_FLAG_GATHER);
+ if (err)
+ goto err;
+ }
+
+ /* `i` is equal to `n_items -1` after for() */
+
+ ath10k_dbg(ar, ATH10K_DBG_PCI,
+ "pci tx item %d paddr 0x%08x len %d n_items %d\n",
+ i, items[i].paddr, items[i].len, n_items);
+ ath10k_dbg_dump(ar, ATH10K_DBG_PCI_DUMP, NULL, "pci tx data: ",
+ items[i].vaddr, items[i].len);
+
+ err = ath10k_ce_send_nolock(ce_pipe,
+ items[i].transfer_context,
+ items[i].paddr,
+ items[i].len,
+ items[i].transfer_id,
+ 0);
+ if (err)
+ goto err;
+
+ spin_unlock_bh(&ar_pci->ce_lock);
+ return 0;
+
+err:
+ for (; i > 0; i--)
+ __ath10k_ce_send_revert(ce_pipe);
+
+ spin_unlock_bh(&ar_pci->ce_lock);
+ return err;
+}
+
+static int ath10k_pci_hif_diag_read(struct ath10k *ar, u32 address, void *buf,
+ size_t buf_len)
+{
+ return ath10k_pci_diag_read_mem(ar, address, buf, buf_len);
+}
+
+static u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+ ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get free queue number\n");
+
+ return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl);
+}
+
+static void ath10k_pci_dump_registers(struct ath10k *ar,
+ struct ath10k_fw_crash_data *crash_data)
+{
+ __le32 reg_dump_values[REG_DUMP_COUNT_QCA988X] = {};
+ int i, ret;
+
+ lockdep_assert_held(&ar->data_lock);
+
+ ret = ath10k_pci_diag_read_hi(ar, ®_dump_values[0],
+ hi_failure_state,
+ REG_DUMP_COUNT_QCA988X * sizeof(__le32));
+ if (ret) {
+ ath10k_err(ar, "failed to read firmware dump area: %d\n", ret);
+ return;
+ }
+
+ BUILD_BUG_ON(REG_DUMP_COUNT_QCA988X % 4);
+
+ ath10k_err(ar, "firmware register dump:\n");
+ for (i = 0; i < REG_DUMP_COUNT_QCA988X; i += 4)
+ ath10k_err(ar, "[%02d]: 0x%08X 0x%08X 0x%08X 0x%08X\n",
+ i,
+ __le32_to_cpu(reg_dump_values[i]),
+ __le32_to_cpu(reg_dump_values[i + 1]),
+ __le32_to_cpu(reg_dump_values[i + 2]),
+ __le32_to_cpu(reg_dump_values[i + 3]));
+
+ if (!crash_data)
+ return;
+
+ for (i = 0; i < REG_DUMP_COUNT_QCA988X; i++)
+ crash_data->registers[i] = reg_dump_values[i];
+}
+
+static void ath10k_pci_fw_crashed_dump(struct ath10k *ar)
+{
+ struct ath10k_fw_crash_data *crash_data;
+ char uuid[50];
+
+ spin_lock_bh(&ar->data_lock);
+
+ ar->stats.fw_crash_counter++;
+
+ crash_data = ath10k_debug_get_new_fw_crash_data(ar);
+
+ if (crash_data)
+ scnprintf(uuid, sizeof(uuid), "%pUl", &crash_data->uuid);
+ else
+ scnprintf(uuid, sizeof(uuid), "n/a");
+
+ ath10k_err(ar, "firmware crashed! (uuid %s)\n", uuid);
+ ath10k_print_driver_info(ar);
+ ath10k_pci_dump_registers(ar, crash_data);
+
+ spin_unlock_bh(&ar->data_lock);
+
+ queue_work(ar->workqueue, &ar->restart_work);
+}
+
+static void ath10k_pci_hif_send_complete_check(struct ath10k *ar, u8 pipe,
+ int force)
+{
+ ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif send complete check\n");
+
+ if (!force) {
+ int resources;
+ /*
+ * Decide whether to actually poll for completions, or just
+ * wait for a later chance.
+ * If there seem to be plenty of resources left, then just wait
+ * since checking involves reading a CE register, which is a
+ * relatively expensive operation.
+ */
+ resources = ath10k_pci_hif_get_free_queue_number(ar, pipe);
+
+ /*
+ * If at least 50% of the total resources are still available,
+ * don't bother checking again yet.
+ */
+ if (resources > (host_ce_config_wlan[pipe].src_nentries >> 1))
+ return;
+ }
+ ath10k_ce_per_engine_service(ar, pipe);
+}
+
+static void ath10k_pci_hif_set_callbacks(struct ath10k *ar,
+ struct ath10k_hif_cb *callbacks)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+ ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif set callbacks\n");
+
+ memcpy(&ar_pci->msg_callbacks_current, callbacks,
+ sizeof(ar_pci->msg_callbacks_current));
+}
+
+static void ath10k_pci_kill_tasklet(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int i;
+
+ tasklet_kill(&ar_pci->intr_tq);
+ tasklet_kill(&ar_pci->msi_fw_err);
+
+ for (i = 0; i < CE_COUNT; i++)
+ tasklet_kill(&ar_pci->pipe_info[i].intr);
+
+ del_timer_sync(&ar_pci->rx_post_retry);
+}
+
+static int ath10k_pci_hif_map_service_to_pipe(struct ath10k *ar,
+ u16 service_id, u8 *ul_pipe,
+ u8 *dl_pipe, int *ul_is_polled,
+ int *dl_is_polled)
+{
+ const struct service_to_pipe *entry;
+ bool ul_set = false, dl_set = false;
+ int i;
+
+ ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif map service\n");
+
+ /* polling for received messages not supported */
+ *dl_is_polled = 0;
+
+ for (i = 0; i < ARRAY_SIZE(target_service_to_ce_map_wlan); i++) {
+ entry = &target_service_to_ce_map_wlan[i];
+
+ if (__le32_to_cpu(entry->service_id) != service_id)
+ continue;
+
+ switch (__le32_to_cpu(entry->pipedir)) {
+ case PIPEDIR_NONE:
+ break;
+ case PIPEDIR_IN:
+ WARN_ON(dl_set);
+ *dl_pipe = __le32_to_cpu(entry->pipenum);
+ dl_set = true;
+ break;
+ case PIPEDIR_OUT:
+ WARN_ON(ul_set);
+ *ul_pipe = __le32_to_cpu(entry->pipenum);
+ ul_set = true;
+ break;
+ case PIPEDIR_INOUT:
+ WARN_ON(dl_set);
+ WARN_ON(ul_set);
+ *dl_pipe = __le32_to_cpu(entry->pipenum);
+ *ul_pipe = __le32_to_cpu(entry->pipenum);
+ dl_set = true;
+ ul_set = true;
+ break;
+ }
+ }
+
+ if (WARN_ON(!ul_set || !dl_set))
+ return -ENOENT;
+
+ *ul_is_polled =
+ (host_ce_config_wlan[*ul_pipe].flags & CE_ATTR_DIS_INTR) != 0;
+
+ return 0;
+}
+
+static void ath10k_pci_hif_get_default_pipe(struct ath10k *ar,
+ u8 *ul_pipe, u8 *dl_pipe)
+{
+ int ul_is_polled, dl_is_polled;
+
+ ath10k_dbg(ar, ATH10K_DBG_PCI, "pci hif get default pipe\n");
+
+ (void)ath10k_pci_hif_map_service_to_pipe(ar,
+ ATH10K_HTC_SVC_ID_RSVD_CTRL,
+ ul_pipe,
+ dl_pipe,
+ &ul_is_polled,
+ &dl_is_polled);
+}
+
+static void ath10k_pci_irq_msi_fw_mask(struct ath10k *ar)
+{
+ u32 val;
+
+ val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + CORE_CTRL_ADDRESS);
+ val &= ~CORE_CTRL_PCIE_REG_31_MASK;
+
+ ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + CORE_CTRL_ADDRESS, val);
+}
+
+static void ath10k_pci_irq_msi_fw_unmask(struct ath10k *ar)
+{
+ u32 val;
+
+ val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS + CORE_CTRL_ADDRESS);
+ val |= CORE_CTRL_PCIE_REG_31_MASK;
+
+ ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + CORE_CTRL_ADDRESS, val);
+}
+
+static void ath10k_pci_irq_disable(struct ath10k *ar)
+{
+ ath10k_ce_disable_interrupts(ar);
+ ath10k_pci_disable_and_clear_legacy_irq(ar);
+ ath10k_pci_irq_msi_fw_mask(ar);
+}
+
+static void ath10k_pci_irq_sync(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int i;
+
+ for (i = 0; i < max(1, ar_pci->num_msi_intrs); i++)
+ synchronize_irq(ar_pci->pdev->irq + i);
+}
+
+static void ath10k_pci_irq_enable(struct ath10k *ar)
+{
+ ath10k_ce_enable_interrupts(ar);
+ ath10k_pci_enable_legacy_irq(ar);
+ ath10k_pci_irq_msi_fw_unmask(ar);
+}
+
+static int ath10k_pci_hif_start(struct ath10k *ar)
+{
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif start\n");
+
+ ath10k_pci_irq_enable(ar);
+ ath10k_pci_rx_post(ar);
+
+ return 0;
+}
+
+static void ath10k_pci_rx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
+{
+ struct ath10k *ar;
+ struct ath10k_ce_pipe *ce_pipe;
+ struct ath10k_ce_ring *ce_ring;
+ struct sk_buff *skb;
+ int i;
+
+ ar = pci_pipe->hif_ce_state;
+ ce_pipe = pci_pipe->ce_hdl;
+ ce_ring = ce_pipe->dest_ring;
+
+ if (!ce_ring)
+ return;
+
+ if (!pci_pipe->buf_sz)
+ return;
+
+ for (i = 0; i < ce_ring->nentries; i++) {
+ skb = ce_ring->per_transfer_context[i];
+ if (!skb)
+ continue;
+
+ ce_ring->per_transfer_context[i] = NULL;
+
+ dma_unmap_single(ar->dev, ATH10K_SKB_RXCB(skb)->paddr,
+ skb->len + skb_tailroom(skb),
+ DMA_FROM_DEVICE);
+ dev_kfree_skb_any(skb);
+ }
+}
+
+static void ath10k_pci_tx_pipe_cleanup(struct ath10k_pci_pipe *pci_pipe)
+{
+ struct ath10k *ar;
+ struct ath10k_pci *ar_pci;
+ struct ath10k_ce_pipe *ce_pipe;
+ struct ath10k_ce_ring *ce_ring;
+ struct ce_desc *ce_desc;
+ struct sk_buff *skb;
+ unsigned int id;
+ int i;
+
+ ar = pci_pipe->hif_ce_state;
+ ar_pci = ath10k_pci_priv(ar);
+ ce_pipe = pci_pipe->ce_hdl;
+ ce_ring = ce_pipe->src_ring;
+
+ if (!ce_ring)
+ return;
+
+ if (!pci_pipe->buf_sz)
+ return;
+
+ ce_desc = ce_ring->shadow_base;
+ if (WARN_ON(!ce_desc))
+ return;
+
+ for (i = 0; i < ce_ring->nentries; i++) {
+ skb = ce_ring->per_transfer_context[i];
+ if (!skb)
+ continue;
+
+ ce_ring->per_transfer_context[i] = NULL;
+ id = MS(__le16_to_cpu(ce_desc[i].flags),
+ CE_DESC_FLAGS_META_DATA);
+
+ ar_pci->msg_callbacks_current.tx_completion(ar, skb);
+ }
+}
+
+/*
+ * Cleanup residual buffers for device shutdown:
+ * buffers that were enqueued for receive
+ * buffers that were to be sent
+ * Note: Buffers that had completed but which were
+ * not yet processed are on a completion queue. They
+ * are handled when the completion thread shuts down.
+ */
+static void ath10k_pci_buffer_cleanup(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int pipe_num;
+
+ for (pipe_num = 0; pipe_num < CE_COUNT; pipe_num++) {
+ struct ath10k_pci_pipe *pipe_info;
+
+ pipe_info = &ar_pci->pipe_info[pipe_num];
+ ath10k_pci_rx_pipe_cleanup(pipe_info);
+ ath10k_pci_tx_pipe_cleanup(pipe_info);
+ }
+}
+
+static void ath10k_pci_ce_deinit(struct ath10k *ar)
+{
+ int i;
+
+ for (i = 0; i < CE_COUNT; i++)
+ ath10k_ce_deinit_pipe(ar, i);
+}
+
+static void ath10k_pci_flush(struct ath10k *ar)
+{
+ ath10k_pci_kill_tasklet(ar);
+ ath10k_pci_buffer_cleanup(ar);
+}
+
+static void ath10k_pci_hif_stop(struct ath10k *ar)
+{
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif stop\n");
+
+ /* Most likely the device has HTT Rx ring configured. The only way to
+ * prevent the device from accessing (and possible corrupting) host
+ * memory is to reset the chip now.
+ *
+ * There's also no known way of masking MSI interrupts on the device.
+ * For ranged MSI the CE-related interrupts can be masked. However
+ * regardless how many MSI interrupts are assigned the first one
+ * is always used for firmware indications (crashes) and cannot be
+ * masked. To prevent the device from asserting the interrupt reset it
+ * before proceeding with cleanup.
+ */
+ ath10k_pci_warm_reset(ar);
+
+ ath10k_pci_irq_disable(ar);
+ ath10k_pci_irq_sync(ar);
+ ath10k_pci_flush(ar);
+}
+
+static int ath10k_pci_hif_exchange_bmi_msg(struct ath10k *ar,
+ void *req, u32 req_len,
+ void *resp, u32 *resp_len)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ struct ath10k_pci_pipe *pci_tx = &ar_pci->pipe_info[BMI_CE_NUM_TO_TARG];
+ struct ath10k_pci_pipe *pci_rx = &ar_pci->pipe_info[BMI_CE_NUM_TO_HOST];
+ struct ath10k_ce_pipe *ce_tx = pci_tx->ce_hdl;
+ struct ath10k_ce_pipe *ce_rx = pci_rx->ce_hdl;
+ dma_addr_t req_paddr = 0;
+ dma_addr_t resp_paddr = 0;
+ struct bmi_xfer xfer = {};
+ void *treq, *tresp = NULL;
+ int ret = 0;
+
+ might_sleep();
+
+ if (resp && !resp_len)
+ return -EINVAL;
+
+ if (resp && resp_len && *resp_len == 0)
+ return -EINVAL;
+
+ treq = kmemdup(req, req_len, GFP_KERNEL);
+ if (!treq)
+ return -ENOMEM;
+
+ req_paddr = dma_map_single(ar->dev, treq, req_len, DMA_TO_DEVICE);
+ ret = dma_mapping_error(ar->dev, req_paddr);
+ if (ret)
+ goto err_dma;
+
+ if (resp && resp_len) {
+ tresp = kzalloc(*resp_len, GFP_KERNEL);
+ if (!tresp) {
+ ret = -ENOMEM;
+ goto err_req;
+ }
+
+ resp_paddr = dma_map_single(ar->dev, tresp, *resp_len,
+ DMA_FROM_DEVICE);
+ ret = dma_mapping_error(ar->dev, resp_paddr);
+ if (ret)
+ goto err_req;
+
+ xfer.wait_for_resp = true;
+ xfer.resp_len = 0;
+
+ ath10k_ce_rx_post_buf(ce_rx, &xfer, resp_paddr);
+ }
+
+ ret = ath10k_ce_send(ce_tx, &xfer, req_paddr, req_len, -1, 0);
+ if (ret)
+ goto err_resp;
+
+ ret = ath10k_pci_bmi_wait(ce_tx, ce_rx, &xfer);
+ if (ret) {
+ u32 unused_buffer;
+ unsigned int unused_nbytes;
+ unsigned int unused_id;
+
+ ath10k_ce_cancel_send_next(ce_tx, NULL, &unused_buffer,
+ &unused_nbytes, &unused_id);
+ } else {
+ /* non-zero means we did not time out */
+ ret = 0;
+ }
+
+err_resp:
+ if (resp) {
+ u32 unused_buffer;
+
+ ath10k_ce_revoke_recv_next(ce_rx, NULL, &unused_buffer);
+ dma_unmap_single(ar->dev, resp_paddr,
+ *resp_len, DMA_FROM_DEVICE);
+ }
+err_req:
+ dma_unmap_single(ar->dev, req_paddr, req_len, DMA_TO_DEVICE);
+
+ if (ret == 0 && resp_len) {
+ *resp_len = min(*resp_len, xfer.resp_len);
+ memcpy(resp, tresp, xfer.resp_len);
+ }
+err_dma:
+ kfree(treq);
+ kfree(tresp);
+
+ return ret;
+}
+
+static void ath10k_pci_bmi_send_done(struct ath10k_ce_pipe *ce_state)
+{
+ struct bmi_xfer *xfer;
+ u32 ce_data;
+ unsigned int nbytes;
+ unsigned int transfer_id;
+
+ if (ath10k_ce_completed_send_next(ce_state, (void **)&xfer, &ce_data,
+ &nbytes, &transfer_id))
+ return;
+
+ xfer->tx_done = true;
+}
+
+static void ath10k_pci_bmi_recv_data(struct ath10k_ce_pipe *ce_state)
+{
+ struct ath10k *ar = ce_state->ar;
+ struct bmi_xfer *xfer;
+ u32 ce_data;
+ unsigned int nbytes;
+ unsigned int transfer_id;
+ unsigned int flags;
+
+ if (ath10k_ce_completed_recv_next(ce_state, (void **)&xfer, &ce_data,
+ &nbytes, &transfer_id, &flags))
+ return;
+
+ if (WARN_ON_ONCE(!xfer))
+ return;
+
+ if (!xfer->wait_for_resp) {
+ ath10k_warn(ar, "unexpected: BMI data received; ignoring\n");
+ return;
+ }
+
+ xfer->resp_len = nbytes;
+ xfer->rx_done = true;
+}
+
+static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe,
+ struct ath10k_ce_pipe *rx_pipe,
+ struct bmi_xfer *xfer)
+{
+ unsigned long timeout = jiffies + BMI_COMMUNICATION_TIMEOUT_HZ;
+
+ while (time_before_eq(jiffies, timeout)) {
+ ath10k_pci_bmi_send_done(tx_pipe);
+ ath10k_pci_bmi_recv_data(rx_pipe);
+
+ if (xfer->tx_done && (xfer->rx_done == xfer->wait_for_resp))
+ return 0;
+
+ schedule();
+ }
+
+ return -ETIMEDOUT;
+}
+
+/*
+ * Send an interrupt to the device to wake up the Target CPU
+ * so it has an opportunity to notice any changed state.
+ */
+static int ath10k_pci_wake_target_cpu(struct ath10k *ar)
+{
+ u32 addr, val;
+
+ addr = SOC_CORE_BASE_ADDRESS | CORE_CTRL_ADDRESS;
+ val = ath10k_pci_read32(ar, addr);
+ val |= CORE_CTRL_CPU_INTR_MASK;
+ ath10k_pci_write32(ar, addr, val);
+
+ return 0;
+}
+
+static int ath10k_pci_get_num_banks(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+ switch (ar_pci->pdev->device) {
+ case QCA988X_2_0_DEVICE_ID:
+ return 1;
+ case QCA6174_2_1_DEVICE_ID:
+ switch (MS(ar->chip_id, SOC_CHIP_ID_REV)) {
+ case QCA6174_HW_1_0_CHIP_ID_REV:
+ case QCA6174_HW_1_1_CHIP_ID_REV:
+ return 3;
+ case QCA6174_HW_1_3_CHIP_ID_REV:
+ return 2;
+ case QCA6174_HW_2_1_CHIP_ID_REV:
+ case QCA6174_HW_2_2_CHIP_ID_REV:
+ return 6;
+ case QCA6174_HW_3_0_CHIP_ID_REV:
+ case QCA6174_HW_3_1_CHIP_ID_REV:
+ case QCA6174_HW_3_2_CHIP_ID_REV:
+ return 9;
+ }
+ break;
+ }
+
+ ath10k_warn(ar, "unknown number of banks, assuming 1\n");
+ return 1;
+}
+
+static int ath10k_pci_init_config(struct ath10k *ar)
+{
+ u32 interconnect_targ_addr;
+ u32 pcie_state_targ_addr = 0;
+ u32 pipe_cfg_targ_addr = 0;
+ u32 svc_to_pipe_map = 0;
+ u32 pcie_config_flags = 0;
+ u32 ealloc_value;
+ u32 ealloc_targ_addr;
+ u32 flag2_value;
+ u32 flag2_targ_addr;
+ int ret = 0;
+
+ /* Download to Target the CE Config and the service-to-CE map */
+ interconnect_targ_addr =
+ host_interest_item_address(HI_ITEM(hi_interconnect_state));
+
+ /* Supply Target-side CE configuration */
+ ret = ath10k_pci_diag_read32(ar, interconnect_targ_addr,
+ &pcie_state_targ_addr);
+ if (ret != 0) {
+ ath10k_err(ar, "Failed to get pcie state addr: %d\n", ret);
+ return ret;
+ }
+
+ if (pcie_state_targ_addr == 0) {
+ ret = -EIO;
+ ath10k_err(ar, "Invalid pcie state addr\n");
+ return ret;
+ }
+
+ ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
+ offsetof(struct pcie_state,
+ pipe_cfg_addr)),
+ &pipe_cfg_targ_addr);
+ if (ret != 0) {
+ ath10k_err(ar, "Failed to get pipe cfg addr: %d\n", ret);
+ return ret;
+ }
+
+ if (pipe_cfg_targ_addr == 0) {
+ ret = -EIO;
+ ath10k_err(ar, "Invalid pipe cfg addr\n");
+ return ret;
+ }
+
+ ret = ath10k_pci_diag_write_mem(ar, pipe_cfg_targ_addr,
+ target_ce_config_wlan,
+ sizeof(target_ce_config_wlan));
+
+ if (ret != 0) {
+ ath10k_err(ar, "Failed to write pipe cfg: %d\n", ret);
+ return ret;
+ }
+
+ ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
+ offsetof(struct pcie_state,
+ svc_to_pipe_map)),
+ &svc_to_pipe_map);
+ if (ret != 0) {
+ ath10k_err(ar, "Failed to get svc/pipe map: %d\n", ret);
+ return ret;
+ }
+
+ if (svc_to_pipe_map == 0) {
+ ret = -EIO;
+ ath10k_err(ar, "Invalid svc_to_pipe map\n");
+ return ret;
+ }
+
+ ret = ath10k_pci_diag_write_mem(ar, svc_to_pipe_map,
+ target_service_to_ce_map_wlan,
+ sizeof(target_service_to_ce_map_wlan));
+ if (ret != 0) {
+ ath10k_err(ar, "Failed to write svc/pipe map: %d\n", ret);
+ return ret;
+ }
+
+ ret = ath10k_pci_diag_read32(ar, (pcie_state_targ_addr +
+ offsetof(struct pcie_state,
+ config_flags)),
+ &pcie_config_flags);
+ if (ret != 0) {
+ ath10k_err(ar, "Failed to get pcie config_flags: %d\n", ret);
+ return ret;
+ }
+
+ pcie_config_flags &= ~PCIE_CONFIG_FLAG_ENABLE_L1;
+
+ ret = ath10k_pci_diag_write32(ar, (pcie_state_targ_addr +
+ offsetof(struct pcie_state,
+ config_flags)),
+ pcie_config_flags);
+ if (ret != 0) {
+ ath10k_err(ar, "Failed to write pcie config_flags: %d\n", ret);
+ return ret;
+ }
+
+ /* configure early allocation */
+ ealloc_targ_addr = host_interest_item_address(HI_ITEM(hi_early_alloc));
+
+ ret = ath10k_pci_diag_read32(ar, ealloc_targ_addr, &ealloc_value);
+ if (ret != 0) {
+ ath10k_err(ar, "Faile to get early alloc val: %d\n", ret);
+ return ret;
+ }
+
+ /* first bank is switched to IRAM */
+ ealloc_value |= ((HI_EARLY_ALLOC_MAGIC << HI_EARLY_ALLOC_MAGIC_SHIFT) &
+ HI_EARLY_ALLOC_MAGIC_MASK);
+ ealloc_value |= ((ath10k_pci_get_num_banks(ar) <<
+ HI_EARLY_ALLOC_IRAM_BANKS_SHIFT) &
+ HI_EARLY_ALLOC_IRAM_BANKS_MASK);
+
+ ret = ath10k_pci_diag_write32(ar, ealloc_targ_addr, ealloc_value);
+ if (ret != 0) {
+ ath10k_err(ar, "Failed to set early alloc val: %d\n", ret);
+ return ret;
+ }
+
+ /* Tell Target to proceed with initialization */
+ flag2_targ_addr = host_interest_item_address(HI_ITEM(hi_option_flag2));
+
+ ret = ath10k_pci_diag_read32(ar, flag2_targ_addr, &flag2_value);
+ if (ret != 0) {
+ ath10k_err(ar, "Failed to get option val: %d\n", ret);
+ return ret;
+ }
+
+ flag2_value |= HI_OPTION_EARLY_CFG_DONE;
+
+ ret = ath10k_pci_diag_write32(ar, flag2_targ_addr, flag2_value);
+ if (ret != 0) {
+ ath10k_err(ar, "Failed to set option val: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ath10k_pci_alloc_pipes(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ struct ath10k_pci_pipe *pipe;
+ int i, ret;
+
+ for (i = 0; i < CE_COUNT; i++) {
+ pipe = &ar_pci->pipe_info[i];
+ pipe->ce_hdl = &ar_pci->ce_states[i];
+ pipe->pipe_num = i;
+ pipe->hif_ce_state = ar;
+
+ ret = ath10k_ce_alloc_pipe(ar, i, &host_ce_config_wlan[i],
+ ath10k_pci_ce_send_done,
+ ath10k_pci_ce_recv_data);
+ if (ret) {
+ ath10k_err(ar, "failed to allocate copy engine pipe %d: %d\n",
+ i, ret);
+ return ret;
+ }
+
+ /* Last CE is Diagnostic Window */
+ if (i == CE_COUNT - 1) {
+ ar_pci->ce_diag = pipe->ce_hdl;
+ continue;
+ }
+
+ pipe->buf_sz = (size_t)(host_ce_config_wlan[i].src_sz_max);
+ }
+
+ return 0;
+}
+
+static void ath10k_pci_free_pipes(struct ath10k *ar)
+{
+ int i;
+
+ for (i = 0; i < CE_COUNT; i++)
+ ath10k_ce_free_pipe(ar, i);
+}
+
+static int ath10k_pci_init_pipes(struct ath10k *ar)
+{
+ int i, ret;
+
+ for (i = 0; i < CE_COUNT; i++) {
+ ret = ath10k_ce_init_pipe(ar, i, &host_ce_config_wlan[i]);
+ if (ret) {
+ ath10k_err(ar, "failed to initialize copy engine pipe %d: %d\n",
+ i, ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static bool ath10k_pci_has_fw_crashed(struct ath10k *ar)
+{
+ return ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS) &
+ FW_IND_EVENT_PENDING;
+}
+
+static void ath10k_pci_fw_crashed_clear(struct ath10k *ar)
+{
+ u32 val;
+
+ val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
+ val &= ~FW_IND_EVENT_PENDING;
+ ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, val);
+}
+
+/* this function effectively clears target memory controller assert line */
+static void ath10k_pci_warm_reset_si0(struct ath10k *ar)
+{
+ u32 val;
+
+ val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
+ ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
+ val | SOC_RESET_CONTROL_SI0_RST_MASK);
+ val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
+
+ msleep(10);
+
+ val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
+ ath10k_pci_soc_write32(ar, SOC_RESET_CONTROL_ADDRESS,
+ val & ~SOC_RESET_CONTROL_SI0_RST_MASK);
+ val = ath10k_pci_soc_read32(ar, SOC_RESET_CONTROL_ADDRESS);
+
+ msleep(10);
+}
+
+static void ath10k_pci_warm_reset_cpu(struct ath10k *ar)
+{
+ u32 val;
+
+ ath10k_pci_write32(ar, FW_INDICATOR_ADDRESS, 0);
+
+ val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
+ SOC_RESET_CONTROL_ADDRESS);
+ ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
+ val | SOC_RESET_CONTROL_CPU_WARM_RST_MASK);
+}
+
+static void ath10k_pci_warm_reset_ce(struct ath10k *ar)
+{
+ u32 val;
+
+ val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
+ SOC_RESET_CONTROL_ADDRESS);
+
+ ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
+ val | SOC_RESET_CONTROL_CE_RST_MASK);
+ msleep(10);
+ ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + SOC_RESET_CONTROL_ADDRESS,
+ val & ~SOC_RESET_CONTROL_CE_RST_MASK);
+}
+
+static void ath10k_pci_warm_reset_clear_lf(struct ath10k *ar)
+{
+ u32 val;
+
+ val = ath10k_pci_read32(ar, RTC_SOC_BASE_ADDRESS +
+ SOC_LF_TIMER_CONTROL0_ADDRESS);
+ ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS +
+ SOC_LF_TIMER_CONTROL0_ADDRESS,
+ val & ~SOC_LF_TIMER_CONTROL0_ENABLE_MASK);
+}
+
+static int ath10k_pci_warm_reset(struct ath10k *ar)
+{
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset\n");
+
+ spin_lock_bh(&ar->data_lock);
+ ar->stats.fw_warm_reset_counter++;
+ spin_unlock_bh(&ar->data_lock);
+
+ ath10k_pci_irq_disable(ar);
+
+ /* Make sure the target CPU is not doing anything dangerous, e.g. if it
+ * were to access copy engine while host performs copy engine reset
+ * then it is possible for the device to confuse pci-e controller to
+ * the point of bringing host system to a complete stop (i.e. hang).
+ */
+ ath10k_pci_warm_reset_si0(ar);
+ ath10k_pci_warm_reset_cpu(ar);
+ ath10k_pci_init_pipes(ar);
+ ath10k_pci_wait_for_target_init(ar);
+
+ ath10k_pci_warm_reset_clear_lf(ar);
+ ath10k_pci_warm_reset_ce(ar);
+ ath10k_pci_warm_reset_cpu(ar);
+ ath10k_pci_init_pipes(ar);
+
+ ret = ath10k_pci_wait_for_target_init(ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to wait for target init: %d\n", ret);
+ return ret;
+ }
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset complete\n");
+
+ return 0;
+}
+
+static int ath10k_pci_qca988x_chip_reset(struct ath10k *ar)
+{
+ int i, ret;
+ u32 val;
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot 988x chip reset\n");
+
+ /* Some hardware revisions (e.g. CUS223v2) has issues with cold reset.
+ * It is thus preferred to use warm reset which is safer but may not be
+ * able to recover the device from all possible fail scenarios.
+ *
+ * Warm reset doesn't always work on first try so attempt it a few
+ * times before giving up.
+ */
+ for (i = 0; i < ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS; i++) {
+ ret = ath10k_pci_warm_reset(ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to warm reset attempt %d of %d: %d\n",
+ i + 1, ATH10K_PCI_NUM_WARM_RESET_ATTEMPTS,
+ ret);
+ continue;
+ }
+
+ /* FIXME: Sometimes copy engine doesn't recover after warm
+ * reset. In most cases this needs cold reset. In some of these
+ * cases the device is in such a state that a cold reset may
+ * lock up the host.
+ *
+ * Reading any host interest register via copy engine is
+ * sufficient to verify if device is capable of booting
+ * firmware blob.
+ */
+ ret = ath10k_pci_init_pipes(ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to init copy engine: %d\n",
+ ret);
+ continue;
+ }
+
+ ret = ath10k_pci_diag_read32(ar, QCA988X_HOST_INTEREST_ADDRESS,
+ &val);
+ if (ret) {
+ ath10k_warn(ar, "failed to poke copy engine: %d\n",
+ ret);
+ continue;
+ }
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot chip reset complete (warm)\n");
+ return 0;
+ }
+
+ if (ath10k_pci_reset_mode == ATH10K_PCI_RESET_WARM_ONLY) {
+ ath10k_warn(ar, "refusing cold reset as requested\n");
+ return -EPERM;
+ }
+
+ ret = ath10k_pci_cold_reset(ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to cold reset: %d\n", ret);
+ return ret;
+ }
+
+ ret = ath10k_pci_wait_for_target_init(ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
+ ret);
+ return ret;
+ }
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca988x chip reset complete (cold)\n");
+
+ return 0;
+}
+
+static int ath10k_pci_qca6174_chip_reset(struct ath10k *ar)
+{
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset\n");
+
+ /* FIXME: QCA6174 requires cold + warm reset to work. */
+
+ ret = ath10k_pci_cold_reset(ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to cold reset: %d\n", ret);
+ return ret;
+ }
+
+ ret = ath10k_pci_wait_for_target_init(ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to wait for target after cold reset: %d\n",
+ ret);
+ return ret;
+ }
+
+ ret = ath10k_pci_warm_reset(ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to warm reset: %d\n", ret);
+ return ret;
+ }
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot qca6174 chip reset complete (cold)\n");
+
+ return 0;
+}
+
+static int ath10k_pci_chip_reset(struct ath10k *ar)
+{
+ if (QCA_REV_988X(ar))
+ return ath10k_pci_qca988x_chip_reset(ar);
+ else if (QCA_REV_6174(ar))
+ return ath10k_pci_qca6174_chip_reset(ar);
+ else
+ return -ENOTSUPP;
+}
+
+static int ath10k_pci_hif_power_up(struct ath10k *ar)
+{
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power up\n");
+
+ ret = ath10k_pci_wake(ar);
+ if (ret) {
+ ath10k_err(ar, "failed to wake up target: %d\n", ret);
+ return ret;
+ }
+
+ /*
+ * Bring the target up cleanly.
+ *
+ * The target may be in an undefined state with an AUX-powered Target
+ * and a Host in WoW mode. If the Host crashes, loses power, or is
+ * restarted (without unloading the driver) then the Target is left
+ * (aux) powered and running. On a subsequent driver load, the Target
+ * is in an unexpected state. We try to catch that here in order to
+ * reset the Target and retry the probe.
+ */
+ ret = ath10k_pci_chip_reset(ar);
+ if (ret) {
+ if (ath10k_pci_has_fw_crashed(ar)) {
+ ath10k_warn(ar, "firmware crashed during chip reset\n");
+ ath10k_pci_fw_crashed_clear(ar);
+ ath10k_pci_fw_crashed_dump(ar);
+ }
+
+ ath10k_err(ar, "failed to reset chip: %d\n", ret);
+ goto err_sleep;
+ }
+
+ ret = ath10k_pci_init_pipes(ar);
+ if (ret) {
+ ath10k_err(ar, "failed to initialize CE: %d\n", ret);
+ goto err_sleep;
+ }
+
+ ret = ath10k_pci_init_config(ar);
+ if (ret) {
+ ath10k_err(ar, "failed to setup init config: %d\n", ret);
+ goto err_ce;
+ }
+
+ ret = ath10k_pci_wake_target_cpu(ar);
+ if (ret) {
+ ath10k_err(ar, "could not wake up target CPU: %d\n", ret);
+ goto err_ce;
+ }
+
+ return 0;
+
+err_ce:
+ ath10k_pci_ce_deinit(ar);
+
+err_sleep:
+ ath10k_pci_sleep(ar);
+ return ret;
+}
+
+static void ath10k_pci_hif_power_down(struct ath10k *ar)
+{
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot hif power down\n");
+
+ /* Currently hif_power_up performs effectively a reset and hif_stop
+ * resets the chip as well so there's no point in resetting here.
+ */
+
+ ath10k_pci_sleep(ar);
+}
+
+#ifdef CONFIG_PM
+
+#define ATH10K_PCI_PM_CONTROL 0x44
+
+static int ath10k_pci_hif_suspend(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ struct pci_dev *pdev = ar_pci->pdev;
+ u32 val;
+
+ pci_read_config_dword(pdev, ATH10K_PCI_PM_CONTROL, &val);
+
+ if ((val & 0x000000ff) != 0x3) {
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
+ pci_write_config_dword(pdev, ATH10K_PCI_PM_CONTROL,
+ (val & 0xffffff00) | 0x03);
+ }
+
+ return 0;
+}
+
+static int ath10k_pci_hif_resume(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ struct pci_dev *pdev = ar_pci->pdev;
+ u32 val;
+
+ pci_read_config_dword(pdev, ATH10K_PCI_PM_CONTROL, &val);
+
+ if ((val & 0x000000ff) != 0) {
+ pci_restore_state(pdev);
+ pci_write_config_dword(pdev, ATH10K_PCI_PM_CONTROL,
+ val & 0xffffff00);
+ /*
+ * Suspend/Resume resets the PCI configuration space,
+ * so we have to re-disable the RETRY_TIMEOUT register (0x41)
+ * to keep PCI Tx retries from interfering with C3 CPU state
+ */
+ pci_read_config_dword(pdev, 0x40, &val);
+
+ if ((val & 0x0000ff00) != 0)
+ pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
+ }
+
+ return 0;
+}
+#endif
+
+static const struct ath10k_hif_ops ath10k_pci_hif_ops = {
+ .tx_sg = ath10k_pci_hif_tx_sg,
+ .diag_read = ath10k_pci_hif_diag_read,
+ .diag_write = ath10k_pci_diag_write_mem,
+ .exchange_bmi_msg = ath10k_pci_hif_exchange_bmi_msg,
+ .start = ath10k_pci_hif_start,
+ .stop = ath10k_pci_hif_stop,
+ .map_service_to_pipe = ath10k_pci_hif_map_service_to_pipe,
+ .get_default_pipe = ath10k_pci_hif_get_default_pipe,
+ .send_complete_check = ath10k_pci_hif_send_complete_check,
+ .set_callbacks = ath10k_pci_hif_set_callbacks,
+ .get_free_queue_number = ath10k_pci_hif_get_free_queue_number,
+ .power_up = ath10k_pci_hif_power_up,
+ .power_down = ath10k_pci_hif_power_down,
+ .read32 = ath10k_pci_read32,
+ .write32 = ath10k_pci_write32,
+#ifdef CONFIG_PM
+ .suspend = ath10k_pci_hif_suspend,
+ .resume = ath10k_pci_hif_resume,
+#endif
+};
+
+static void ath10k_pci_ce_tasklet(unsigned long ptr)
+{
+ struct ath10k_pci_pipe *pipe = (struct ath10k_pci_pipe *)ptr;
+ struct ath10k_pci *ar_pci = pipe->ar_pci;
+
+ ath10k_ce_per_engine_service(ar_pci->ar, pipe->pipe_num);
+}
+
+static void ath10k_msi_err_tasklet(unsigned long data)
+{
+ struct ath10k *ar = (struct ath10k *)data;
+
+ if (!ath10k_pci_has_fw_crashed(ar)) {
+ ath10k_warn(ar, "received unsolicited fw crash interrupt\n");
+ return;
+ }
+
+ ath10k_pci_irq_disable(ar);
+ ath10k_pci_fw_crashed_clear(ar);
+ ath10k_pci_fw_crashed_dump(ar);
+}
+
+/*
+ * Handler for a per-engine interrupt on a PARTICULAR CE.
+ * This is used in cases where each CE has a private MSI interrupt.
+ */
+static irqreturn_t ath10k_pci_per_engine_handler(int irq, void *arg)
+{
+ struct ath10k *ar = arg;
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int ce_id = irq - ar_pci->pdev->irq - MSI_ASSIGN_CE_INITIAL;
+
+ if (ce_id < 0 || ce_id >= ARRAY_SIZE(ar_pci->pipe_info)) {
+ ath10k_warn(ar, "unexpected/invalid irq %d ce_id %d\n", irq,
+ ce_id);
+ return IRQ_HANDLED;
+ }
+
+ /*
+ * NOTE: We are able to derive ce_id from irq because we
+ * use a one-to-one mapping for CE's 0..5.
+ * CE's 6 & 7 do not use interrupts at all.
+ *
+ * This mapping must be kept in sync with the mapping
+ * used by firmware.
+ */
+ tasklet_schedule(&ar_pci->pipe_info[ce_id].intr);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t ath10k_pci_msi_fw_handler(int irq, void *arg)
+{
+ struct ath10k *ar = arg;
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+ tasklet_schedule(&ar_pci->msi_fw_err);
+ return IRQ_HANDLED;
+}
+
+/*
+ * Top-level interrupt handler for all PCI interrupts from a Target.
+ * When a block of MSI interrupts is allocated, this top-level handler
+ * is not used; instead, we directly call the correct sub-handler.
+ */
+static irqreturn_t ath10k_pci_interrupt_handler(int irq, void *arg)
+{
+ struct ath10k *ar = arg;
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+ if (ar_pci->num_msi_intrs == 0) {
+ if (!ath10k_pci_irq_pending(ar))
+ return IRQ_NONE;
+
+ ath10k_pci_disable_and_clear_legacy_irq(ar);
+ }
+
+ tasklet_schedule(&ar_pci->intr_tq);
+
+ return IRQ_HANDLED;
+}
+
+static void ath10k_pci_tasklet(unsigned long data)
+{
+ struct ath10k *ar = (struct ath10k *)data;
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+ if (ath10k_pci_has_fw_crashed(ar)) {
+ ath10k_pci_irq_disable(ar);
+ ath10k_pci_fw_crashed_clear(ar);
+ ath10k_pci_fw_crashed_dump(ar);
+ return;
+ }
+
+ ath10k_ce_per_engine_service_any(ar);
+
+ /* Re-enable legacy irq that was disabled in the irq handler */
+ if (ar_pci->num_msi_intrs == 0)
+ ath10k_pci_enable_legacy_irq(ar);
+}
+
+static int ath10k_pci_request_irq_msix(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int ret, i;
+
+ ret = request_irq(ar_pci->pdev->irq + MSI_ASSIGN_FW,
+ ath10k_pci_msi_fw_handler,
+ IRQF_SHARED, "ath10k_pci", ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to request MSI-X fw irq %d: %d\n",
+ ar_pci->pdev->irq + MSI_ASSIGN_FW, ret);
+ return ret;
+ }
+
+ for (i = MSI_ASSIGN_CE_INITIAL; i <= MSI_ASSIGN_CE_MAX; i++) {
+ ret = request_irq(ar_pci->pdev->irq + i,
+ ath10k_pci_per_engine_handler,
+ IRQF_SHARED, "ath10k_pci", ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to request MSI-X ce irq %d: %d\n",
+ ar_pci->pdev->irq + i, ret);
+
+ for (i--; i >= MSI_ASSIGN_CE_INITIAL; i--)
+ free_irq(ar_pci->pdev->irq + i, ar);
+
+ free_irq(ar_pci->pdev->irq + MSI_ASSIGN_FW, ar);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int ath10k_pci_request_irq_msi(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int ret;
+
+ ret = request_irq(ar_pci->pdev->irq,
+ ath10k_pci_interrupt_handler,
+ IRQF_SHARED, "ath10k_pci", ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to request MSI irq %d: %d\n",
+ ar_pci->pdev->irq, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ath10k_pci_request_irq_legacy(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int ret;
+
+ ret = request_irq(ar_pci->pdev->irq,
+ ath10k_pci_interrupt_handler,
+ IRQF_SHARED, "ath10k_pci", ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to request legacy irq %d: %d\n",
+ ar_pci->pdev->irq, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ath10k_pci_request_irq(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+ switch (ar_pci->num_msi_intrs) {
+ case 0:
+ return ath10k_pci_request_irq_legacy(ar);
+ case 1:
+ return ath10k_pci_request_irq_msi(ar);
+ case MSI_NUM_REQUEST:
+ return ath10k_pci_request_irq_msix(ar);
+ }
+
+ ath10k_warn(ar, "unknown irq configuration upon request\n");
+ return -EINVAL;
+}
+
+static void ath10k_pci_free_irq(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int i;
+
+ /* There's at least one interrupt irregardless whether its legacy INTR
+ * or MSI or MSI-X */
+ for (i = 0; i < max(1, ar_pci->num_msi_intrs); i++)
+ free_irq(ar_pci->pdev->irq + i, ar);
+}
+
+static void ath10k_pci_init_irq_tasklets(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int i;
+
+ tasklet_init(&ar_pci->intr_tq, ath10k_pci_tasklet, (unsigned long)ar);
+ tasklet_init(&ar_pci->msi_fw_err, ath10k_msi_err_tasklet,
+ (unsigned long)ar);
+
+ for (i = 0; i < CE_COUNT; i++) {
+ ar_pci->pipe_info[i].ar_pci = ar_pci;
+ tasklet_init(&ar_pci->pipe_info[i].intr, ath10k_pci_ce_tasklet,
+ (unsigned long)&ar_pci->pipe_info[i]);
+ }
+}
+
+static int ath10k_pci_init_irq(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ int ret;
+
+ ath10k_pci_init_irq_tasklets(ar);
+
+ if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_AUTO)
+ ath10k_info(ar, "limiting irq mode to: %d\n",
+ ath10k_pci_irq_mode);
+
+ /* Try MSI-X */
+ if (ath10k_pci_irq_mode == ATH10K_PCI_IRQ_AUTO) {
+ ar_pci->num_msi_intrs = MSI_NUM_REQUEST;
+ ret = pci_enable_msi_range(ar_pci->pdev, ar_pci->num_msi_intrs,
+ ar_pci->num_msi_intrs);
+ if (ret > 0)
+ return 0;
+
+ /* fall-through */
+ }
+
+ /* Try MSI */
+ if (ath10k_pci_irq_mode != ATH10K_PCI_IRQ_LEGACY) {
+ ar_pci->num_msi_intrs = 1;
+ ret = pci_enable_msi(ar_pci->pdev);
+ if (ret == 0)
+ return 0;
+
+ /* fall-through */
+ }
+
+ /* Try legacy irq
+ *
+ * A potential race occurs here: The CORE_BASE write
+ * depends on target correctly decoding AXI address but
+ * host won't know when target writes BAR to CORE_CTRL.
+ * This write might get lost if target has NOT written BAR.
+ * For now, fix the race by repeating the write in below
+ * synchronization checking. */
+ ar_pci->num_msi_intrs = 0;
+
+ ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
+ PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL);
+
+ return 0;
+}
+
+static void ath10k_pci_deinit_irq_legacy(struct ath10k *ar)
+{
+ ath10k_pci_write32(ar, SOC_CORE_BASE_ADDRESS + PCIE_INTR_ENABLE_ADDRESS,
+ 0);
+}
+
+static int ath10k_pci_deinit_irq(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+
+ switch (ar_pci->num_msi_intrs) {
+ case 0:
+ ath10k_pci_deinit_irq_legacy(ar);
+ return 0;
+ case 1:
+ /* fall-through */
+ case MSI_NUM_REQUEST:
+ pci_disable_msi(ar_pci->pdev);
+ return 0;
+ default:
+ pci_disable_msi(ar_pci->pdev);
+ }
+
+ ath10k_warn(ar, "unknown irq configuration upon deinit\n");
+ return -EINVAL;
+}
+
+static int ath10k_pci_wait_for_target_init(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ unsigned long timeout;
+ u32 val;
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot waiting target to initialise\n");
+
+ timeout = jiffies + msecs_to_jiffies(ATH10K_PCI_TARGET_WAIT);
+
+ do {
+ val = ath10k_pci_read32(ar, FW_INDICATOR_ADDRESS);
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target indicator %x\n",
+ val);
+
+ /* target should never return this */
+ if (val == 0xffffffff)
+ continue;
+
+ /* the device has crashed so don't bother trying anymore */
+ if (val & FW_IND_EVENT_PENDING)
+ break;
+
+ if (val & FW_IND_INITIALIZED)
+ break;
+
+ if (ar_pci->num_msi_intrs == 0)
+ /* Fix potential race by repeating CORE_BASE writes */
+ ath10k_pci_enable_legacy_irq(ar);
+
+ mdelay(10);
+ } while (time_before(jiffies, timeout));
+
+ ath10k_pci_disable_and_clear_legacy_irq(ar);
+ ath10k_pci_irq_msi_fw_mask(ar);
+
+ if (val == 0xffffffff) {
+ ath10k_err(ar, "failed to read device register, device is gone\n");
+ return -EIO;
+ }
+
+ if (val & FW_IND_EVENT_PENDING) {
+ ath10k_warn(ar, "device has crashed during init\n");
+ return -ECOMM;
+ }
+
+ if (!(val & FW_IND_INITIALIZED)) {
+ ath10k_err(ar, "failed to receive initialized event from target: %08x\n",
+ val);
+ return -ETIMEDOUT;
+ }
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot target initialised\n");
+ return 0;
+}
+
+static int ath10k_pci_cold_reset(struct ath10k *ar)
+{
+ int i;
+ u32 val;
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset\n");
+
+ spin_lock_bh(&ar->data_lock);
+
+ ar->stats.fw_cold_reset_counter++;
+
+ spin_unlock_bh(&ar->data_lock);
+
+ /* Put Target, including PCIe, into RESET. */
+ val = ath10k_pci_reg_read32(ar, SOC_GLOBAL_RESET_ADDRESS);
+ val |= 1;
+ ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
+
+ for (i = 0; i < ATH_PCI_RESET_WAIT_MAX; i++) {
+ if (ath10k_pci_reg_read32(ar, RTC_STATE_ADDRESS) &
+ RTC_STATE_COLD_RESET_MASK)
+ break;
+ msleep(1);
+ }
+
+ /* Pull Target, including PCIe, out of RESET. */
+ val &= ~1;
+ ath10k_pci_reg_write32(ar, SOC_GLOBAL_RESET_ADDRESS, val);
+
+ for (i = 0; i < ATH_PCI_RESET_WAIT_MAX; i++) {
+ if (!(ath10k_pci_reg_read32(ar, RTC_STATE_ADDRESS) &
+ RTC_STATE_COLD_RESET_MASK))
+ break;
+ msleep(1);
+ }
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset complete\n");
+
+ return 0;
+}
+
+static int ath10k_pci_claim(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ struct pci_dev *pdev = ar_pci->pdev;
+ u32 lcr_val;
+ int ret;
+
+ pci_set_drvdata(pdev, ar);
+
+ ret = pci_enable_device(pdev);
+ if (ret) {
+ ath10k_err(ar, "failed to enable pci device: %d\n", ret);
+ return ret;
+ }
+
+ ret = pci_request_region(pdev, BAR_NUM, "ath");
+ if (ret) {
+ ath10k_err(ar, "failed to request region BAR%d: %d\n", BAR_NUM,
+ ret);
+ goto err_device;
+ }
+
+ /* Target expects 32 bit DMA. Enforce it. */
+ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (ret) {
+ ath10k_err(ar, "failed to set dma mask to 32-bit: %d\n", ret);
+ goto err_region;
+ }
+
+ ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (ret) {
+ ath10k_err(ar, "failed to set consistent dma mask to 32-bit: %d\n",
+ ret);
+ goto err_region;
+ }
+
+ pci_set_master(pdev);
+
+ /* Workaround: Disable ASPM */
+ pci_read_config_dword(pdev, 0x80, &lcr_val);
+ pci_write_config_dword(pdev, 0x80, (lcr_val & 0xffffff00));
+
+ /* Arrange for access to Target SoC registers. */
+ ar_pci->mem = pci_iomap(pdev, BAR_NUM, 0);
+ if (!ar_pci->mem) {
+ ath10k_err(ar, "failed to iomap BAR%d\n", BAR_NUM);
+ ret = -EIO;
+ goto err_master;
+ }
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot pci_mem 0x%p\n", ar_pci->mem);
+ return 0;
+
+err_master:
+ pci_clear_master(pdev);
+
+err_region:
+ pci_release_region(pdev, BAR_NUM);
+
+err_device:
+ pci_disable_device(pdev);
+
+ return ret;
+}
+
+static void ath10k_pci_release(struct ath10k *ar)
+{
+ struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
+ struct pci_dev *pdev = ar_pci->pdev;
+
+ pci_iounmap(pdev, ar_pci->mem);
+ pci_release_region(pdev, BAR_NUM);
+ pci_clear_master(pdev);
+ pci_disable_device(pdev);
+}
+
+static bool ath10k_pci_chip_is_supported(u32 dev_id, u32 chip_id)
+{
+ const struct ath10k_pci_supp_chip *supp_chip;
+ int i;
+ u32 rev_id = MS(chip_id, SOC_CHIP_ID_REV);
+
+ for (i = 0; i < ARRAY_SIZE(ath10k_pci_supp_chips); i++) {
+ supp_chip = &ath10k_pci_supp_chips[i];
+
+ if (supp_chip->dev_id == dev_id &&
+ supp_chip->rev_id == rev_id)
+ return true;
+ }
+
+ return false;
+}
+
+static int ath10k_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *pci_dev)
+{
+ int ret = 0;
+ struct ath10k *ar;
+ struct ath10k_pci *ar_pci;
+ enum ath10k_hw_rev hw_rev;
+ u32 chip_id;
+
+ switch (pci_dev->device) {
+ case QCA988X_2_0_DEVICE_ID:
+ hw_rev = ATH10K_HW_QCA988X;
+ break;
+ case QCA6174_2_1_DEVICE_ID:
+ hw_rev = ATH10K_HW_QCA6174;
+ break;
+ default:
+ WARN_ON(1);
+ return -ENOTSUPP;
+ }
+
+ ar = ath10k_core_create(sizeof(*ar_pci), &pdev->dev, ATH10K_BUS_PCI,
+ hw_rev, &ath10k_pci_hif_ops);
+ if (!ar) {
+ dev_err(&pdev->dev, "failed to allocate core\n");
+ return -ENOMEM;
+ }
+
+ ath10k_dbg(ar, ATH10K_DBG_PCI, "pci probe\n");
+
+ ar_pci = ath10k_pci_priv(ar);
+ ar_pci->pdev = pdev;
+ ar_pci->dev = &pdev->dev;
+ ar_pci->ar = ar;
+
+ spin_lock_init(&ar_pci->ce_lock);
+ setup_timer(&ar_pci->rx_post_retry, ath10k_pci_rx_replenish_retry,
+ (unsigned long)ar);
+
+ ret = ath10k_pci_claim(ar);
+ if (ret) {
+ ath10k_err(ar, "failed to claim device: %d\n", ret);
+ goto err_core_destroy;
+ }
+
+ ret = ath10k_pci_wake(ar);
+ if (ret) {
+ ath10k_err(ar, "failed to wake up: %d\n", ret);
+ goto err_release;
+ }
+
+ ret = ath10k_pci_alloc_pipes(ar);
+ if (ret) {
+ ath10k_err(ar, "failed to allocate copy engine pipes: %d\n",
+ ret);
+ goto err_sleep;
+ }
+
+ ath10k_pci_ce_deinit(ar);
+ ath10k_pci_irq_disable(ar);
+
+ ret = ath10k_pci_init_irq(ar);
+ if (ret) {
+ ath10k_err(ar, "failed to init irqs: %d\n", ret);
+ goto err_free_pipes;
+ }
+
+ ath10k_info(ar, "pci irq %s interrupts %d irq_mode %d reset_mode %d\n",
+ ath10k_pci_get_irq_method(ar), ar_pci->num_msi_intrs,
+ ath10k_pci_irq_mode, ath10k_pci_reset_mode);
+
+ ret = ath10k_pci_request_irq(ar);
+ if (ret) {
+ ath10k_warn(ar, "failed to request irqs: %d\n", ret);
+ goto err_deinit_irq;
+ }
+
+ ret = ath10k_pci_chip_reset(ar);
+ if (ret) {
+ ath10k_err(ar, "failed to reset chip: %d\n", ret);
+ goto err_free_irq;
+ }
+
+ chip_id = ath10k_pci_soc_read32(ar, SOC_CHIP_ID_ADDRESS);
+ if (chip_id == 0xffffffff) {
+ ath10k_err(ar, "failed to get chip id\n");
+ goto err_free_irq;
+ }
+
+ if (!ath10k_pci_chip_is_supported(pdev->device, chip_id)) {
+ ath10k_err(ar, "device %04x with chip_id %08x isn't supported\n",
+ pdev->device, chip_id);
+ goto err_sleep;
+ }
+
+ ath10k_pci_sleep(ar);
+
+ ret = ath10k_core_register(ar, chip_id);
+ if (ret) {
+ ath10k_err(ar, "failed to register driver core: %d\n", ret);
+ goto err_free_irq;
+ }
+
+ return 0;
+
+err_free_irq:
+ ath10k_pci_free_irq(ar);
+ ath10k_pci_kill_tasklet(ar);
+
+err_deinit_irq:
+ ath10k_pci_deinit_irq(ar);
+
+err_free_pipes:
+ ath10k_pci_free_pipes(ar);
+
+err_sleep:
+ ath10k_pci_sleep(ar);
+
+err_release:
+ ath10k_pci_release(ar);
+
+err_core_destroy:
+ ath10k_core_destroy(ar);
+
+ return ret;
+}
+
+static void ath10k_pci_remove(struct pci_dev *pdev)
+{
+ struct ath10k *ar = pci_get_drvdata(pdev);
+ struct ath10k_pci *ar_pci;
+
+ ath10k_dbg(ar, ATH10K_DBG_PCI, "pci remove\n");
+
+ if (!ar)
+ return;
+
+ ar_pci = ath10k_pci_priv(ar);
+
+ if (!ar_pci)
+ return;
+
+ ath10k_core_unregister(ar);
+ ath10k_pci_free_irq(ar);
+ ath10k_pci_kill_tasklet(ar);
+ ath10k_pci_deinit_irq(ar);
+ ath10k_pci_ce_deinit(ar);
+ ath10k_pci_free_pipes(ar);
+ ath10k_pci_release(ar);
+ ath10k_core_destroy(ar);
+}
+
+MODULE_DEVICE_TABLE(pci, ath10k_pci_id_table);
+
+static struct pci_driver ath10k_pci_driver = {
+ .name = "ath10k_pci",
+ .id_table = ath10k_pci_id_table,
+ .probe = ath10k_pci_probe,
+ .remove = ath10k_pci_remove,
+};
+
+static int __init ath10k_pci_init(void)
+{
+ int ret;
+
+ ret = pci_register_driver(&ath10k_pci_driver);
+ if (ret)
+ printk(KERN_ERR "failed to register ath10k pci driver: %d\n",
+ ret);
+
+ return ret;
+}
+module_init(ath10k_pci_init);
+
+static void __exit ath10k_pci_exit(void)
+{
+ pci_unregister_driver(&ath10k_pci_driver);
+}
+
+module_exit(ath10k_pci_exit);
+
+MODULE_AUTHOR("Qualcomm Atheros");
+MODULE_DESCRIPTION("Driver support for Atheros QCA988X PCIe devices");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_FW_FILE);
+MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API2_FILE);
+MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" ATH10K_FW_API3_FILE);
+MODULE_FIRMWARE(QCA988X_HW_2_0_FW_DIR "/" QCA988X_HW_2_0_BOARD_DATA_FILE);
Code Review / kvmfornfv.git / blobdiff