Unlike other ATH11K PCIe devices which are enumerated by APSS
processor (Application Processor SubSystem), WCN6750 gets
enumerated by the WPSS Q6 processor (Wireless Processor SubSystem);
In simple terms, though WCN6750 is PCIe device, it is not attached
to the APSS processor, APSS will not know of such a device being
present in the system and therefore WCN6750 will be registered as
a platform device to the kernel core like other supported AHB
devices.
WCN6750 uses both AHB and PCI APIs for it's operation, it uses
AHB APIs for device probe/boot and PCI APIs for device setup
and register accesses; Because of this nature, it is referred
as a hybrid bus device.
Refactor PCI code to support hybrid bus devices like WCN6750.
Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.1.0.1-00573-QCAMSLSWPLZ-1
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-01720.1-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1
Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.5.0.1-01100-QCAHKSWPL_SILICONZ-1
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-00192-QCAHKSWPL_SILICONZ-1
Signed-off-by: Manikanta Pubbisetty <quic_mpubbise@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath11k/Makefile | 2 +-
drivers/net/wireless/ath/ath11k/mhi.c | 6 +-
drivers/net/wireless/ath/ath11k/pci.c | 728 +----------------------------
drivers/net/wireless/ath/ath11k/pci.h | 41 --
drivers/net/wireless/ath/ath11k/pci_cmn.c | 737 ++++++++++++++++++++++++++++++
drivers/net/wireless/ath/ath11k/pci_cmn.h | 53 +++
6 files changed, 797 insertions(+), 770 deletions(-)
create mode 100644 drivers/net/wireless/ath/ath11k/pci_cmn.c
create mode 100644 drivers/net/wireless/ath/ath11k/pci_cmn.h
diff --git a/drivers/net/wireless/ath/ath11k/Makefile b/drivers/net/wireless/ath/ath11k/Makefile
index c1fce41..71376da 100644
--- a/drivers/net/wireless/ath/ath11k/Makefile
+++ b/drivers/net/wireless/ath/ath11k/Makefile
@@ -29,7 +29,7 @@ obj-$(CONFIG_ATH11K_AHB) += ath11k_ahb.o
ath11k_ahb-y += ahb.o
obj-$(CONFIG_ATH11K_PCI) += ath11k_pci.o
-ath11k_pci-y += mhi.o pci.o
+ath11k_pci-y += mhi.o pci.o pci_cmn.o
# for tracing framework to find trace.h
CFLAGS_trace.o := -I$(src)
diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c
index d0f94a7..7872cda 100644
--- a/drivers/net/wireless/ath/ath11k/mhi.c
+++ b/drivers/net/wireless/ath/ath11k/mhi.c
@@ -1,5 +1,8 @@
// SPDX-License-Identifier: BSD-3-Clause-Clear
-/* Copyright (c) 2020 The Linux Foundation. All rights reserved. */
+/*
+ * Copyright (c) 2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021, Qualcomm Innovation Center, Inc. All rights reserved.
+ */
#include <linux/msi.h>
#include <linux/pci.h>
@@ -8,6 +11,7 @@
#include "debug.h"
#include "mhi.h"
#include "pci.h"
+#include "pci_cmn.h"
#define MHI_TIMEOUT_DEFAULT_MS 90000
diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index a95616f..d1f62cf 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -13,6 +13,7 @@
#include "hif.h"
#include "mhi.h"
#include "debug.h"
+#include "pci_cmn.h"
#define ATH11K_PCI_BAR_NUM 0
#define ATH11K_PCI_DMA_MASK 32
@@ -75,76 +76,6 @@ static const struct ath11k_msi_config msi_config_one_msi = {
},
};
-static const char *irq_name[ATH11K_IRQ_NUM_MAX] = {
- "bhi",
- "mhi-er0",
- "mhi-er1",
- "ce0",
- "ce1",
- "ce2",
- "ce3",
- "ce4",
- "ce5",
- "ce6",
- "ce7",
- "ce8",
- "ce9",
- "ce10",
- "ce11",
- "host2wbm-desc-feed",
- "host2reo-re-injection",
- "host2reo-command",
- "host2rxdma-monitor-ring3",
- "host2rxdma-monitor-ring2",
- "host2rxdma-monitor-ring1",
- "reo2ost-exception",
- "wbm2host-rx-release",
- "reo2host-status",
- "reo2host-destination-ring4",
- "reo2host-destination-ring3",
- "reo2host-destination-ring2",
- "reo2host-destination-ring1",
- "rxdma2host-monitor-destination-mac3",
- "rxdma2host-monitor-destination-mac2",
- "rxdma2host-monitor-destination-mac1",
- "ppdu-end-interrupts-mac3",
- "ppdu-end-interrupts-mac2",
- "ppdu-end-interrupts-mac1",
- "rxdma2host-monitor-status-ring-mac3",
- "rxdma2host-monitor-status-ring-mac2",
- "rxdma2host-monitor-status-ring-mac1",
- "host2rxdma-host-buf-ring-mac3",
- "host2rxdma-host-buf-ring-mac2",
- "host2rxdma-host-buf-ring-mac1",
- "rxdma2host-destination-ring-mac3",
- "rxdma2host-destination-ring-mac2",
- "rxdma2host-destination-ring-mac1",
- "host2tcl-input-ring4",
- "host2tcl-input-ring3",
- "host2tcl-input-ring2",
- "host2tcl-input-ring1",
- "wbm2host-tx-completions-ring3",
- "wbm2host-tx-completions-ring2",
- "wbm2host-tx-completions-ring1",
- "tcl2host-status-ring",
-};
-
-static inline void ath11k_pci_select_window(struct ath11k_pci *ab_pci, u32 offset)
-{
- struct ath11k_base *ab = ab_pci->ab;
-
- u32 window = FIELD_GET(ATH11K_PCI_WINDOW_VALUE_MASK, offset);
-
- lockdep_assert_held(&ab_pci->window_lock);
-
- if (window != ab_pci->register_window) {
- iowrite32(ATH11K_PCI_WINDOW_ENABLE_BIT | window,
- ab->mem + ATH11K_PCI_WINDOW_REG_ADDRESS);
- ioread32(ab->mem + ATH11K_PCI_WINDOW_REG_ADDRESS);
- ab_pci->register_window = window;
- }
-}
-
static inline void ath11k_pci_select_static_window(struct ath11k_pci *ab_pci)
{
u32 umac_window;
@@ -159,103 +90,6 @@ static inline void ath11k_pci_select_static_window(struct ath11k_pci *ab_pci)
ab_pci->ab->mem + ATH11K_PCI_WINDOW_REG_ADDRESS);
}
-static inline u32 ath11k_pci_get_window_start(struct ath11k_base *ab,
- u32 offset)
-{
- u32 window_start;
-
- /* If offset lies within DP register range, use 3rd window */
- if ((offset ^ HAL_SEQ_WCSS_UMAC_OFFSET) < ATH11K_PCI_WINDOW_RANGE_MASK)
- window_start = 3 * ATH11K_PCI_WINDOW_START;
- /* If offset lies within CE register range, use 2nd window */
- else if ((offset ^ HAL_CE_WFSS_CE_REG_BASE) < ATH11K_PCI_WINDOW_RANGE_MASK)
- window_start = 2 * ATH11K_PCI_WINDOW_START;
- else
- window_start = ATH11K_PCI_WINDOW_START;
-
- return window_start;
-}
-
-void ath11k_pci_write32(struct ath11k_base *ab, u32 offset, u32 value)
-{
- struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
- u32 window_start;
-
- /* for offset beyond BAR + 4K - 32, may
- * need to wakeup MHI to access.
- */
- if (ab->hw_params.wakeup_mhi &&
- test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
- offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF)
- mhi_device_get_sync(ab_pci->mhi_ctrl->mhi_dev);
-
- if (offset < ATH11K_PCI_WINDOW_START) {
- iowrite32(value, ab->mem + offset);
- } else {
- if (ab->bus_params.static_window_map)
- window_start = ath11k_pci_get_window_start(ab, offset);
- else
- window_start = ATH11K_PCI_WINDOW_START;
-
- if (window_start == ATH11K_PCI_WINDOW_START) {
- spin_lock_bh(&ab_pci->window_lock);
- ath11k_pci_select_window(ab_pci, offset);
- iowrite32(value, ab->mem + window_start +
- (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
- spin_unlock_bh(&ab_pci->window_lock);
- } else {
- iowrite32(value, ab->mem + window_start +
- (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
- }
- }
-
- if (ab->hw_params.wakeup_mhi &&
- test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
- offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF)
- mhi_device_put(ab_pci->mhi_ctrl->mhi_dev);
-}
-
-u32 ath11k_pci_read32(struct ath11k_base *ab, u32 offset)
-{
- struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
- u32 val, window_start;
-
- /* for offset beyond BAR + 4K - 32, may
- * need to wakeup MHI to access.
- */
- if (ab->hw_params.wakeup_mhi &&
- test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
- offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF)
- mhi_device_get_sync(ab_pci->mhi_ctrl->mhi_dev);
-
- if (offset < ATH11K_PCI_WINDOW_START) {
- val = ioread32(ab->mem + offset);
- } else {
- if (ab->bus_params.static_window_map)
- window_start = ath11k_pci_get_window_start(ab, offset);
- else
- window_start = ATH11K_PCI_WINDOW_START;
-
- if (window_start == ATH11K_PCI_WINDOW_START) {
- spin_lock_bh(&ab_pci->window_lock);
- ath11k_pci_select_window(ab_pci, offset);
- val = ioread32(ab->mem + window_start +
- (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
- spin_unlock_bh(&ab_pci->window_lock);
- } else {
- val = ioread32(ab->mem + window_start +
- (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
- }
- }
-
- if (ab->hw_params.wakeup_mhi &&
- test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
- offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF)
- mhi_device_put(ab_pci->mhi_ctrl->mhi_dev);
-
- return val;
-}
-
static void ath11k_pci_soc_global_reset(struct ath11k_base *ab)
{
u32 val, delay;
@@ -452,456 +286,6 @@ static void ath11k_pci_sw_reset(struct ath11k_base *ab, bool power_on)
ath11k_mhi_set_mhictrl_reset(ab);
}
-int ath11k_pci_get_msi_irq(struct device *dev, unsigned int vector)
-{
- struct pci_dev *pci_dev = to_pci_dev(dev);
-
- return pci_irq_vector(pci_dev, vector);
-}
-
-void ath11k_pci_get_msi_address(struct ath11k_base *ab, u32 *msi_addr_lo,
- u32 *msi_addr_hi)
-{
- struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
- struct pci_dev *pci_dev = to_pci_dev(ab->dev);
-
- pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_LO,
- msi_addr_lo);
-
- if (test_bit(ATH11K_PCI_FLAG_IS_MSI_64, &ab_pci->flags)) {
- pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_HI,
- msi_addr_hi);
- } else {
- *msi_addr_hi = 0;
- }
-}
-
-int ath11k_pci_get_user_msi_assignment(struct ath11k_pci *ab_pci, char *user_name,
- int *num_vectors, u32 *user_base_data,
- u32 *base_vector)
-{
- struct ath11k_base *ab = ab_pci->ab;
- const struct ath11k_msi_config *msi_config = ab_pci->msi_config;
- int idx;
-
- for (idx = 0; idx < msi_config->total_users; idx++) {
- if (strcmp(user_name, msi_config->users[idx].name) == 0) {
- *num_vectors = msi_config->users[idx].num_vectors;
- *base_vector = msi_config->users[idx].base_vector;
- *user_base_data = *base_vector + ab_pci->msi_ep_base_data;
-
- ath11k_dbg(ab, ATH11K_DBG_PCI,
- "Assign MSI to user: %s, num_vectors: %d, user_base_data: %u, base_vector: %u\n",
- user_name, *num_vectors, *user_base_data,
- *base_vector);
-
- return 0;
- }
- }
-
- ath11k_err(ab, "Failed to find MSI assignment for %s!\n", user_name);
-
- return -EINVAL;
-}
-
-void ath11k_pci_get_ce_msi_idx(struct ath11k_base *ab, u32 ce_id, u32 *msi_idx)
-{
- u32 i, msi_data_idx;
-
- for (i = 0, msi_data_idx = 0; i < ab->hw_params.ce_count; i++) {
- if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
- continue;
-
- if (ce_id == i)
- break;
-
- msi_data_idx++;
- }
- *msi_idx = msi_data_idx;
-}
-
-int ath11k_get_user_msi_assignment(struct ath11k_base *ab, char *user_name,
- int *num_vectors, u32 *user_base_data,
- u32 *base_vector)
-{
- struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
-
- return ath11k_pci_get_user_msi_assignment(ab_pci, user_name,
- num_vectors, user_base_data,
- base_vector);
-}
-
-static void ath11k_pci_free_ext_irq(struct ath11k_base *ab)
-{
- int i, j;
-
- for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
- struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
-
- for (j = 0; j < irq_grp->num_irq; j++)
- free_irq(ab->irq_num[irq_grp->irqs[j]], irq_grp);
-
- netif_napi_del(&irq_grp->napi);
- }
-}
-
-void ath11k_pci_free_irq(struct ath11k_base *ab)
-{
- int i, irq_idx;
-
- for (i = 0; i < ab->hw_params.ce_count; i++) {
- if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
- continue;
- irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
- free_irq(ab->irq_num[irq_idx], &ab->ce.ce_pipe[i]);
- }
-
- ath11k_pci_free_ext_irq(ab);
-}
-
-static void ath11k_pci_ce_irq_enable(struct ath11k_base *ab, u16 ce_id)
-{
- struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
- u32 irq_idx;
-
- /* In case of one MSI vector, we handle irq enable/disable in a
- * uniform way since we only have one irq
- */
- if (!test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
- return;
-
- irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_id;
- enable_irq(ab->irq_num[irq_idx]);
-}
-
-static void ath11k_pci_ce_irq_disable(struct ath11k_base *ab, u16 ce_id)
-{
- struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
- u32 irq_idx;
-
- /* In case of one MSI vector, we handle irq enable/disable in a
- * uniform way since we only have one irq
- */
- if (!test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
- return;
-
- irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_id;
- disable_irq_nosync(ab->irq_num[irq_idx]);
-}
-
-static void ath11k_pci_ce_irqs_disable(struct ath11k_base *ab)
-{
- int i;
-
- clear_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);
-
- for (i = 0; i < ab->hw_params.ce_count; i++) {
- if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
- continue;
- ath11k_pci_ce_irq_disable(ab, i);
- }
-}
-
-static void ath11k_pci_sync_ce_irqs(struct ath11k_base *ab)
-{
- int i;
- int irq_idx;
-
- for (i = 0; i < ab->hw_params.ce_count; i++) {
- if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
- continue;
-
- irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
- synchronize_irq(ab->irq_num[irq_idx]);
- }
-}
-
-static void ath11k_pci_ce_tasklet(struct tasklet_struct *t)
-{
- struct ath11k_ce_pipe *ce_pipe = from_tasklet(ce_pipe, t, intr_tq);
- int irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;
-
- ath11k_ce_per_engine_service(ce_pipe->ab, ce_pipe->pipe_num);
-
- enable_irq(ce_pipe->ab->irq_num[irq_idx]);
-}
-
-static irqreturn_t ath11k_pci_ce_interrupt_handler(int irq, void *arg)
-{
- struct ath11k_ce_pipe *ce_pipe = arg;
- struct ath11k_base *ab = ce_pipe->ab;
- int irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;
-
- if (!test_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags))
- return IRQ_HANDLED;
-
- /* last interrupt received for this CE */
- ce_pipe->timestamp = jiffies;
-
- disable_irq_nosync(ab->irq_num[irq_idx]);
-
- tasklet_schedule(&ce_pipe->intr_tq);
-
- return IRQ_HANDLED;
-}
-
-static void ath11k_pci_ext_grp_disable(struct ath11k_ext_irq_grp *irq_grp)
-{
- struct ath11k_pci *ab_pci = ath11k_pci_priv(irq_grp->ab);
- int i;
-
- /* In case of one MSI vector, we handle irq enable/disable
- * in a uniform way since we only have one irq
- */
- if (!test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
- return;
-
- for (i = 0; i < irq_grp->num_irq; i++)
- disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
-}
-
-static void __ath11k_pci_ext_irq_disable(struct ath11k_base *sc)
-{
- int i;
-
- clear_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &sc->dev_flags);
-
- for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
- struct ath11k_ext_irq_grp *irq_grp = &sc->ext_irq_grp[i];
-
- ath11k_pci_ext_grp_disable(irq_grp);
-
- napi_synchronize(&irq_grp->napi);
- napi_disable(&irq_grp->napi);
- }
-}
-
-static void ath11k_pci_ext_grp_enable(struct ath11k_ext_irq_grp *irq_grp)
-{
- struct ath11k_pci *ab_pci = ath11k_pci_priv(irq_grp->ab);
- int i;
-
- /* In case of one MSI vector, we handle irq enable/disable in a
- * uniform way since we only have one irq
- */
- if (!test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
- return;
-
- for (i = 0; i < irq_grp->num_irq; i++)
- enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
-}
-
-void ath11k_pci_ext_irq_enable(struct ath11k_base *ab)
-{
- int i;
-
- set_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags);
-
- for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
- struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
-
- napi_enable(&irq_grp->napi);
- ath11k_pci_ext_grp_enable(irq_grp);
- }
-}
-
-static void ath11k_pci_sync_ext_irqs(struct ath11k_base *ab)
-{
- int i, j, irq_idx;
-
- for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
- struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
-
- for (j = 0; j < irq_grp->num_irq; j++) {
- irq_idx = irq_grp->irqs[j];
- synchronize_irq(ab->irq_num[irq_idx]);
- }
- }
-}
-
-void ath11k_pci_ext_irq_disable(struct ath11k_base *ab)
-{
- __ath11k_pci_ext_irq_disable(ab);
- ath11k_pci_sync_ext_irqs(ab);
-}
-
-static int ath11k_pci_ext_grp_napi_poll(struct napi_struct *napi, int budget)
-{
- struct ath11k_ext_irq_grp *irq_grp = container_of(napi,
- struct ath11k_ext_irq_grp,
- napi);
- struct ath11k_base *ab = irq_grp->ab;
- int work_done;
- int i;
-
- work_done = ath11k_dp_service_srng(ab, irq_grp, budget);
- if (work_done < budget) {
- napi_complete_done(napi, work_done);
- for (i = 0; i < irq_grp->num_irq; i++)
- enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
- }
-
- if (work_done > budget)
- work_done = budget;
-
- return work_done;
-}
-
-static irqreturn_t ath11k_pci_ext_interrupt_handler(int irq, void *arg)
-{
- struct ath11k_ext_irq_grp *irq_grp = arg;
- struct ath11k_base *ab = irq_grp->ab;
- int i;
-
- if (!test_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags))
- return IRQ_HANDLED;
-
- ath11k_dbg(irq_grp->ab, ATH11K_DBG_PCI, "ext irq:%d\n", irq);
-
- /* last interrupt received for this group */
- irq_grp->timestamp = jiffies;
-
- for (i = 0; i < irq_grp->num_irq; i++)
- disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
-
- napi_schedule(&irq_grp->napi);
-
- return IRQ_HANDLED;
-}
-
-static int ath11k_pci_ext_irq_config(struct ath11k_base *ab)
-{
- struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
- int i, j, ret, num_vectors = 0;
- u32 user_base_data = 0, base_vector = 0;
-
- ret = ath11k_pci_get_user_msi_assignment(ath11k_pci_priv(ab), "DP",
- &num_vectors,
- &user_base_data,
- &base_vector);
- if (ret < 0)
- return ret;
-
- for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
- struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
- u32 num_irq = 0;
-
- irq_grp->ab = ab;
- irq_grp->grp_id = i;
- init_dummy_netdev(&irq_grp->napi_ndev);
- netif_napi_add(&irq_grp->napi_ndev, &irq_grp->napi,
- ath11k_pci_ext_grp_napi_poll, NAPI_POLL_WEIGHT);
-
- if (ab->hw_params.ring_mask->tx[i] ||
- ab->hw_params.ring_mask->rx[i] ||
- ab->hw_params.ring_mask->rx_err[i] ||
- ab->hw_params.ring_mask->rx_wbm_rel[i] ||
- ab->hw_params.ring_mask->reo_status[i] ||
- ab->hw_params.ring_mask->rxdma2host[i] ||
- ab->hw_params.ring_mask->host2rxdma[i] ||
- ab->hw_params.ring_mask->rx_mon_status[i]) {
- num_irq = 1;
- }
-
- irq_grp->num_irq = num_irq;
- irq_grp->irqs[0] = ATH11K_PCI_IRQ_DP_OFFSET + i;
-
- for (j = 0; j < irq_grp->num_irq; j++) {
- int irq_idx = irq_grp->irqs[j];
- int vector = (i % num_vectors) + base_vector;
- int irq = ath11k_pci_get_msi_irq(ab->dev, vector);
-
- ab->irq_num[irq_idx] = irq;
-
- ath11k_dbg(ab, ATH11K_DBG_PCI,
- "irq:%d group:%d\n", irq, i);
-
- irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY);
- ret = request_irq(irq, ath11k_pci_ext_interrupt_handler,
- ab_pci->irq_flags,
- "DP_EXT_IRQ", irq_grp);
- if (ret) {
- ath11k_err(ab, "failed request irq %d: %d\n",
- vector, ret);
- return ret;
- }
- }
- ath11k_pci_ext_grp_disable(irq_grp);
- }
-
- return 0;
-}
-
-int ath11k_pci_set_irq_affinity_hint(struct ath11k_pci *ab_pci,
- const struct cpumask *m)
-{
- if (test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
- return 0;
-
- return irq_set_affinity_hint(ab_pci->pdev->irq, m);
-}
-
-int ath11k_pci_config_irq(struct ath11k_base *ab)
-{
- struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
- struct ath11k_ce_pipe *ce_pipe;
- u32 msi_data_start;
- u32 msi_data_count, msi_data_idx;
- u32 msi_irq_start;
- unsigned int msi_data;
- int irq, i, ret, irq_idx;
-
- ret = ath11k_pci_get_user_msi_assignment(ath11k_pci_priv(ab),
- "CE", &msi_data_count,
- &msi_data_start, &msi_irq_start);
- if (ret)
- return ret;
-
- ret = ath11k_pci_set_irq_affinity_hint(ab_pci, cpumask_of(0));
- if (ret) {
- ath11k_err(ab, "failed to set irq affinity %d\n", ret);
- return ret;
- }
-
- /* Configure CE irqs */
- for (i = 0, msi_data_idx = 0; i < ab->hw_params.ce_count; i++) {
- if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
- continue;
-
- msi_data = (msi_data_idx % msi_data_count) + msi_irq_start;
- irq = ath11k_pci_get_msi_irq(ab->dev, msi_data);
- ce_pipe = &ab->ce.ce_pipe[i];
-
- irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
-
- tasklet_setup(&ce_pipe->intr_tq, ath11k_pci_ce_tasklet);
-
- ret = request_irq(irq, ath11k_pci_ce_interrupt_handler,
- ab_pci->irq_flags, irq_name[irq_idx],
- ce_pipe);
- if (ret) {
- ath11k_err(ab, "failed to request irq %d: %d\n",
- irq_idx, ret);
- goto err_irq_affinity_cleanup;
- }
-
- ab->irq_num[irq_idx] = irq;
- msi_data_idx++;
-
- ath11k_pci_ce_irq_disable(ab, i);
- }
-
- ret = ath11k_pci_ext_irq_config(ab);
- if (ret)
- goto err_irq_affinity_cleanup;
-
- return 0;
-
-err_irq_affinity_cleanup:
- ath11k_pci_set_irq_affinity_hint(ab_pci, NULL);
- return ret;
-}
-
static void ath11k_pci_init_qmi_ce_config(struct ath11k_base *ab)
{
struct ath11k_qmi_ce_cfg *cfg = &ab->qmi.ce_cfg;
@@ -917,19 +301,6 @@ static void ath11k_pci_init_qmi_ce_config(struct ath11k_base *ab)
&cfg->shadow_reg_v2_len);
}
-void ath11k_pci_ce_irqs_enable(struct ath11k_base *ab)
-{
- int i;
-
- set_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);
-
- for (i = 0; i < ab->hw_params.ce_count; i++) {
- if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
- continue;
- ath11k_pci_ce_irq_enable(ab, i);
- }
-}
-
static void ath11k_pci_msi_config(struct ath11k_pci *ab_pci, bool enable)
{
struct pci_dev *dev = ab_pci->pdev;
@@ -1129,13 +500,6 @@ static void ath11k_pci_aspm_disable(struct ath11k_pci *ab_pci)
set_bit(ATH11K_PCI_ASPM_RESTORE, &ab_pci->flags);
}
-void ath11k_pci_aspm_restore(struct ath11k_pci *ab_pci)
-{
- if (test_and_clear_bit(ATH11K_PCI_ASPM_RESTORE, &ab_pci->flags))
- pcie_capability_write_word(ab_pci->pdev, PCI_EXP_LNKCTL,
- ab_pci->link_ctl);
-}
-
static int ath11k_pci_power_up(struct ath11k_base *ab)
{
struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
@@ -1198,53 +562,6 @@ static int ath11k_pci_hif_resume(struct ath11k_base *ab)
return 0;
}
-static void ath11k_pci_kill_tasklets(struct ath11k_base *ab)
-{
- int i;
-
- for (i = 0; i < ab->hw_params.ce_count; i++) {
- struct ath11k_ce_pipe *ce_pipe = &ab->ce.ce_pipe[i];
-
- if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
- continue;
-
- tasklet_kill(&ce_pipe->intr_tq);
- }
-}
-
-void ath11k_pci_ce_irq_disable_sync(struct ath11k_base *ab)
-{
- ath11k_pci_ce_irqs_disable(ab);
- ath11k_pci_sync_ce_irqs(ab);
- ath11k_pci_kill_tasklets(ab);
-}
-
-void ath11k_pci_stop(struct ath11k_base *ab)
-{
- ath11k_pci_ce_irq_disable_sync(ab);
- ath11k_ce_cleanup_pipes(ab);
-}
-
-int ath11k_pci_start(struct ath11k_base *ab)
-{
- struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
-
- set_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags);
-
- /* TODO: for now don't restore ASPM in case of single MSI
- * vector as MHI register reading in M2 causes system hang.
- */
- if (test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
- ath11k_pci_aspm_restore(ab_pci);
- else
- ath11k_info(ab, "leaving PCI ASPM disabled to avoid MHI M2 problems\n");
-
- ath11k_pci_ce_irqs_enable(ab);
- ath11k_ce_rx_post_buf(ab);
-
- return 0;
-}
-
static void ath11k_pci_hif_ce_irq_enable(struct ath11k_base *ab)
{
ath11k_pci_ce_irqs_enable(ab);
@@ -1255,49 +572,6 @@ static void ath11k_pci_hif_ce_irq_disable(struct ath11k_base *ab)
ath11k_pci_ce_irq_disable_sync(ab);
}
-int ath11k_pci_map_service_to_pipe(struct ath11k_base *ab, u16 service_id,
- u8 *ul_pipe, u8 *dl_pipe)
-{
- const struct service_to_pipe *entry;
- bool ul_set = false, dl_set = false;
- int i;
-
- for (i = 0; i < ab->hw_params.svc_to_ce_map_len; i++) {
- entry = &ab->hw_params.svc_to_ce_map[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;
-
- return 0;
-}
-
static const struct ath11k_hif_ops ath11k_pci_hif_ops = {
.start = ath11k_pci_start,
.stop = ath11k_pci_stop,
diff --git a/drivers/net/wireless/ath/ath11k/pci.h b/drivers/net/wireless/ath/ath11k/pci.h
index 4869384..35c8152 100644
--- a/drivers/net/wireless/ath/ath11k/pci.h
+++ b/drivers/net/wireless/ath/ath11k/pci.h
@@ -53,21 +53,6 @@
#define WLAON_QFPROM_PWR_CTRL_REG 0x01f8031c
#define QFPROM_PWR_CTRL_VDD4BLOW_MASK 0x4
-#define ATH11K_PCI_IRQ_CE0_OFFSET 3
-#define ATH11K_PCI_IRQ_DP_OFFSET 14
-
-#define ATH11K_PCI_WINDOW_ENABLE_BIT 0x40000000
-#define ATH11K_PCI_WINDOW_REG_ADDRESS 0x310c
-#define ATH11K_PCI_WINDOW_VALUE_MASK GENMASK(24, 19)
-#define ATH11K_PCI_WINDOW_START 0x80000
-#define ATH11K_PCI_WINDOW_RANGE_MASK GENMASK(18, 0)
-
-/* BAR0 + 4k is always accessible, and no
- * need to force wakeup.
- * 4K - 32 = 0xFE0
- */
-#define ATH11K_PCI_ACCESS_ALWAYS_OFF 0xFE0
-
struct ath11k_msi_user {
char *name;
int num_vectors;
@@ -113,30 +98,4 @@ static inline struct ath11k_pci *ath11k_pci_priv(struct ath11k_base *ab)
return (struct ath11k_pci *)ab->drv_priv;
}
-int ath11k_pci_get_user_msi_assignment(struct ath11k_pci *ar_pci, char *user_name,
- int *num_vectors, u32 *user_base_data,
- u32 *base_vector);
-int ath11k_pci_get_msi_irq(struct device *dev, unsigned int vector);
-void ath11k_pci_write32(struct ath11k_base *ab, u32 offset, u32 value);
-u32 ath11k_pci_read32(struct ath11k_base *ab, u32 offset);
-void ath11k_pci_get_msi_address(struct ath11k_base *ab, u32 *msi_addr_lo,
- u32 *msi_addr_hi);
-void ath11k_pci_get_ce_msi_idx(struct ath11k_base *ab, u32 ce_id, u32 *msi_idx);
-void ath11k_pci_free_irq(struct ath11k_base *ab);
-int ath11k_pci_config_irq(struct ath11k_base *ab);
-void ath11k_pci_ext_irq_enable(struct ath11k_base *ab);
-void ath11k_pci_ext_irq_disable(struct ath11k_base *ab);
-void ath11k_pci_stop(struct ath11k_base *ab);
-int ath11k_pci_start(struct ath11k_base *ab);
-int ath11k_pci_map_service_to_pipe(struct ath11k_base *ab, u16 service_id,
- u8 *ul_pipe, u8 *dl_pipe);
-void ath11k_pci_ce_irqs_enable(struct ath11k_base *ab);
-void ath11k_pci_ce_irq_disable_sync(struct ath11k_base *ab);
-int ath11k_get_user_msi_assignment(struct ath11k_base *ab, char *user_name,
- int *num_vectors, u32 *user_base_data,
- u32 *base_vector);
-void ath11k_pci_aspm_restore(struct ath11k_pci *ab_pci);
-int ath11k_pci_set_irq_affinity_hint(struct ath11k_pci *ab_pci,
- const struct cpumask *m);
-
#endif
diff --git a/drivers/net/wireless/ath/ath11k/pci_cmn.c b/drivers/net/wireless/ath/ath11k/pci_cmn.c
new file mode 100644
index 0000000..976b676
--- /dev/null
+++ b/drivers/net/wireless/ath/ath11k/pci_cmn.c
@@ -0,0 +1,737 @@
+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021, Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/pci.h>
+#include "core.h"
+#include "pci_cmn.h"
+#include "debug.h"
+
+static const char *irq_name[ATH11K_IRQ_NUM_MAX] = {
+ "bhi",
+ "mhi-er0",
+ "mhi-er1",
+ "ce0",
+ "ce1",
+ "ce2",
+ "ce3",
+ "ce4",
+ "ce5",
+ "ce6",
+ "ce7",
+ "ce8",
+ "ce9",
+ "ce10",
+ "ce11",
+ "host2wbm-desc-feed",
+ "host2reo-re-injection",
+ "host2reo-command",
+ "host2rxdma-monitor-ring3",
+ "host2rxdma-monitor-ring2",
+ "host2rxdma-monitor-ring1",
+ "reo2ost-exception",
+ "wbm2host-rx-release",
+ "reo2host-status",
+ "reo2host-destination-ring4",
+ "reo2host-destination-ring3",
+ "reo2host-destination-ring2",
+ "reo2host-destination-ring1",
+ "rxdma2host-monitor-destination-mac3",
+ "rxdma2host-monitor-destination-mac2",
+ "rxdma2host-monitor-destination-mac1",
+ "ppdu-end-interrupts-mac3",
+ "ppdu-end-interrupts-mac2",
+ "ppdu-end-interrupts-mac1",
+ "rxdma2host-monitor-status-ring-mac3",
+ "rxdma2host-monitor-status-ring-mac2",
+ "rxdma2host-monitor-status-ring-mac1",
+ "host2rxdma-host-buf-ring-mac3",
+ "host2rxdma-host-buf-ring-mac2",
+ "host2rxdma-host-buf-ring-mac1",
+ "rxdma2host-destination-ring-mac3",
+ "rxdma2host-destination-ring-mac2",
+ "rxdma2host-destination-ring-mac1",
+ "host2tcl-input-ring4",
+ "host2tcl-input-ring3",
+ "host2tcl-input-ring2",
+ "host2tcl-input-ring1",
+ "wbm2host-tx-completions-ring3",
+ "wbm2host-tx-completions-ring2",
+ "wbm2host-tx-completions-ring1",
+ "tcl2host-status-ring",
+};
+
+void ath11k_pci_aspm_restore(struct ath11k_pci *ab_pci)
+{
+ if (test_and_clear_bit(ATH11K_PCI_ASPM_RESTORE, &ab_pci->flags))
+ pcie_capability_write_word(ab_pci->pdev, PCI_EXP_LNKCTL,
+ ab_pci->link_ctl);
+}
+
+static inline void ath11k_pci_select_window(struct ath11k_pci *ab_pci, u32 offset)
+{
+ struct ath11k_base *ab = ab_pci->ab;
+
+ u32 window = FIELD_GET(ATH11K_PCI_WINDOW_VALUE_MASK, offset);
+
+ lockdep_assert_held(&ab_pci->window_lock);
+
+ if (window != ab_pci->register_window) {
+ iowrite32(ATH11K_PCI_WINDOW_ENABLE_BIT | window,
+ ab->mem + ATH11K_PCI_WINDOW_REG_ADDRESS);
+ ioread32(ab->mem + ATH11K_PCI_WINDOW_REG_ADDRESS);
+ ab_pci->register_window = window;
+ }
+}
+
+static inline u32 ath11k_pci_get_window_start(struct ath11k_base *ab,
+ u32 offset)
+{
+ u32 window_start;
+
+ /* If offset lies within DP register range, use 3rd window */
+ if ((offset ^ HAL_SEQ_WCSS_UMAC_OFFSET) < ATH11K_PCI_WINDOW_RANGE_MASK)
+ window_start = 3 * ATH11K_PCI_WINDOW_START;
+ /* If offset lies within CE register range, use 2nd window */
+ else if ((offset ^ HAL_CE_WFSS_CE_REG_BASE) < ATH11K_PCI_WINDOW_RANGE_MASK)
+ window_start = 2 * ATH11K_PCI_WINDOW_START;
+ else
+ window_start = ATH11K_PCI_WINDOW_START;
+
+ return window_start;
+}
+
+void ath11k_pci_write32(struct ath11k_base *ab, u32 offset, u32 value)
+{
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+ u32 window_start;
+
+ /* for offset beyond BAR + 4K - 32, may
+ * need to wakeup MHI to access.
+ */
+ if (ab->hw_params.wakeup_mhi &&
+ test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
+ offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF)
+ mhi_device_get_sync(ab_pci->mhi_ctrl->mhi_dev);
+
+ if (offset < ATH11K_PCI_WINDOW_START) {
+ iowrite32(value, ab->mem + offset);
+ } else {
+ if (ab->bus_params.static_window_map)
+ window_start = ath11k_pci_get_window_start(ab, offset);
+ else
+ window_start = ATH11K_PCI_WINDOW_START;
+
+ if (window_start == ATH11K_PCI_WINDOW_START) {
+ spin_lock_bh(&ab_pci->window_lock);
+ ath11k_pci_select_window(ab_pci, offset);
+ iowrite32(value, ab->mem + window_start +
+ (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
+ spin_unlock_bh(&ab_pci->window_lock);
+ } else {
+ iowrite32(value, ab->mem + window_start +
+ (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
+ }
+ }
+
+ if (ab->hw_params.wakeup_mhi &&
+ test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
+ offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF)
+ mhi_device_put(ab_pci->mhi_ctrl->mhi_dev);
+}
+
+u32 ath11k_pci_read32(struct ath11k_base *ab, u32 offset)
+{
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+ u32 val, window_start;
+
+ /* for offset beyond BAR + 4K - 32, may
+ * need to wakeup MHI to access.
+ */
+ if (ab->hw_params.wakeup_mhi &&
+ test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
+ offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF)
+ mhi_device_get_sync(ab_pci->mhi_ctrl->mhi_dev);
+
+ if (offset < ATH11K_PCI_WINDOW_START) {
+ val = ioread32(ab->mem + offset);
+ } else {
+ if (ab->bus_params.static_window_map)
+ window_start = ath11k_pci_get_window_start(ab, offset);
+ else
+ window_start = ATH11K_PCI_WINDOW_START;
+
+ if (window_start == ATH11K_PCI_WINDOW_START) {
+ spin_lock_bh(&ab_pci->window_lock);
+ ath11k_pci_select_window(ab_pci, offset);
+ val = ioread32(ab->mem + window_start +
+ (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
+ spin_unlock_bh(&ab_pci->window_lock);
+ } else {
+ val = ioread32(ab->mem + window_start +
+ (offset & ATH11K_PCI_WINDOW_RANGE_MASK));
+ }
+ }
+
+ if (ab->hw_params.wakeup_mhi &&
+ test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
+ offset >= ATH11K_PCI_ACCESS_ALWAYS_OFF)
+ mhi_device_put(ab_pci->mhi_ctrl->mhi_dev);
+
+ return val;
+}
+
+int ath11k_pci_get_msi_irq(struct device *dev, unsigned int vector)
+{
+ struct pci_dev *pci_dev = to_pci_dev(dev);
+
+ return pci_irq_vector(pci_dev, vector);
+}
+
+void ath11k_pci_get_msi_address(struct ath11k_base *ab, u32 *msi_addr_lo,
+ u32 *msi_addr_hi)
+{
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+ struct pci_dev *pci_dev = to_pci_dev(ab->dev);
+
+ pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_LO,
+ msi_addr_lo);
+
+ if (test_bit(ATH11K_PCI_FLAG_IS_MSI_64, &ab_pci->flags)) {
+ pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_HI,
+ msi_addr_hi);
+ } else {
+ *msi_addr_hi = 0;
+ }
+}
+
+int ath11k_pci_get_user_msi_assignment(struct ath11k_pci *ab_pci, char *user_name,
+ int *num_vectors, u32 *user_base_data,
+ u32 *base_vector)
+{
+ struct ath11k_base *ab = ab_pci->ab;
+ const struct ath11k_msi_config *msi_config = ab_pci->msi_config;
+ int idx;
+
+ for (idx = 0; idx < msi_config->total_users; idx++) {
+ if (strcmp(user_name, msi_config->users[idx].name) == 0) {
+ *num_vectors = msi_config->users[idx].num_vectors;
+ *base_vector = msi_config->users[idx].base_vector;
+ *user_base_data = *base_vector + ab_pci->msi_ep_base_data;
+
+ ath11k_dbg(ab, ATH11K_DBG_PCI,
+ "Assign MSI to user: %s, num_vectors: %d, user_base_data: %u, base_vector: %u\n",
+ user_name, *num_vectors, *user_base_data,
+ *base_vector);
+
+ return 0;
+ }
+ }
+
+ ath11k_err(ab, "Failed to find MSI assignment for %s!\n", user_name);
+
+ return -EINVAL;
+}
+
+void ath11k_pci_get_ce_msi_idx(struct ath11k_base *ab, u32 ce_id, u32 *msi_idx)
+{
+ u32 i, msi_data_idx;
+
+ for (i = 0, msi_data_idx = 0; i < ab->hw_params.ce_count; i++) {
+ if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+
+ if (ce_id == i)
+ break;
+
+ msi_data_idx++;
+ }
+ *msi_idx = msi_data_idx;
+}
+
+int ath11k_get_user_msi_assignment(struct ath11k_base *ab, char *user_name,
+ int *num_vectors, u32 *user_base_data,
+ u32 *base_vector)
+{
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+
+ return ath11k_pci_get_user_msi_assignment(ab_pci, user_name,
+ num_vectors, user_base_data,
+ base_vector);
+}
+
+static void ath11k_pci_free_ext_irq(struct ath11k_base *ab)
+{
+ int i, j;
+
+ for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
+ struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
+
+ for (j = 0; j < irq_grp->num_irq; j++)
+ free_irq(ab->irq_num[irq_grp->irqs[j]], irq_grp);
+
+ netif_napi_del(&irq_grp->napi);
+ }
+}
+
+void ath11k_pci_free_irq(struct ath11k_base *ab)
+{
+ int i, irq_idx;
+
+ for (i = 0; i < ab->hw_params.ce_count; i++) {
+ if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+ irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
+ free_irq(ab->irq_num[irq_idx], &ab->ce.ce_pipe[i]);
+ }
+
+ ath11k_pci_free_ext_irq(ab);
+}
+
+static void ath11k_pci_ce_irq_enable(struct ath11k_base *ab, u16 ce_id)
+{
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+ u32 irq_idx;
+
+ /* In case of one MSI vector, we handle irq enable/disable in a
+ * uniform way since we only have one irq
+ */
+ if (!test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
+ return;
+
+ irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_id;
+ enable_irq(ab->irq_num[irq_idx]);
+}
+
+static void ath11k_pci_ce_irq_disable(struct ath11k_base *ab, u16 ce_id)
+{
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+ u32 irq_idx;
+
+ /* In case of one MSI vector, we handle irq enable/disable in a
+ * uniform way since we only have one irq
+ */
+ if (!test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
+ return;
+
+ irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_id;
+ disable_irq_nosync(ab->irq_num[irq_idx]);
+}
+
+static void ath11k_pci_ce_irqs_disable(struct ath11k_base *ab)
+{
+ int i;
+
+ clear_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);
+
+ for (i = 0; i < ab->hw_params.ce_count; i++) {
+ if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+ ath11k_pci_ce_irq_disable(ab, i);
+ }
+}
+
+static void ath11k_pci_sync_ce_irqs(struct ath11k_base *ab)
+{
+ int i;
+ int irq_idx;
+
+ for (i = 0; i < ab->hw_params.ce_count; i++) {
+ if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+
+ irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
+ synchronize_irq(ab->irq_num[irq_idx]);
+ }
+}
+
+static void ath11k_pci_ce_tasklet(struct tasklet_struct *t)
+{
+ struct ath11k_ce_pipe *ce_pipe = from_tasklet(ce_pipe, t, intr_tq);
+ int irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;
+
+ ath11k_ce_per_engine_service(ce_pipe->ab, ce_pipe->pipe_num);
+
+ enable_irq(ce_pipe->ab->irq_num[irq_idx]);
+}
+
+static irqreturn_t ath11k_pci_ce_interrupt_handler(int irq, void *arg)
+{
+ struct ath11k_ce_pipe *ce_pipe = arg;
+ struct ath11k_base *ab = ce_pipe->ab;
+ int irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + ce_pipe->pipe_num;
+
+ if (!test_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags))
+ return IRQ_HANDLED;
+
+ /* last interrupt received for this CE */
+ ce_pipe->timestamp = jiffies;
+
+ disable_irq_nosync(ab->irq_num[irq_idx]);
+
+ tasklet_schedule(&ce_pipe->intr_tq);
+
+ return IRQ_HANDLED;
+}
+
+static void ath11k_pci_ext_grp_disable(struct ath11k_ext_irq_grp *irq_grp)
+{
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(irq_grp->ab);
+ int i;
+
+ /* In case of one MSI vector, we handle irq enable/disable
+ * in a uniform way since we only have one irq
+ */
+ if (!test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
+ return;
+
+ for (i = 0; i < irq_grp->num_irq; i++)
+ disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
+}
+
+static void __ath11k_pci_ext_irq_disable(struct ath11k_base *sc)
+{
+ int i;
+
+ clear_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &sc->dev_flags);
+
+ for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
+ struct ath11k_ext_irq_grp *irq_grp = &sc->ext_irq_grp[i];
+
+ ath11k_pci_ext_grp_disable(irq_grp);
+
+ napi_synchronize(&irq_grp->napi);
+ napi_disable(&irq_grp->napi);
+ }
+}
+
+static void ath11k_pci_ext_grp_enable(struct ath11k_ext_irq_grp *irq_grp)
+{
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(irq_grp->ab);
+ int i;
+
+ /* In case of one MSI vector, we handle irq enable/disable in a
+ * uniform way since we only have one irq
+ */
+ if (!test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
+ return;
+
+ for (i = 0; i < irq_grp->num_irq; i++)
+ enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
+}
+
+void ath11k_pci_ext_irq_enable(struct ath11k_base *ab)
+{
+ int i;
+
+ set_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags);
+
+ for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
+ struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
+
+ napi_enable(&irq_grp->napi);
+ ath11k_pci_ext_grp_enable(irq_grp);
+ }
+}
+
+static void ath11k_pci_sync_ext_irqs(struct ath11k_base *ab)
+{
+ int i, j, irq_idx;
+
+ for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
+ struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
+
+ for (j = 0; j < irq_grp->num_irq; j++) {
+ irq_idx = irq_grp->irqs[j];
+ synchronize_irq(ab->irq_num[irq_idx]);
+ }
+ }
+}
+
+void ath11k_pci_ext_irq_disable(struct ath11k_base *ab)
+{
+ __ath11k_pci_ext_irq_disable(ab);
+ ath11k_pci_sync_ext_irqs(ab);
+}
+
+static int ath11k_pci_ext_grp_napi_poll(struct napi_struct *napi, int budget)
+{
+ struct ath11k_ext_irq_grp *irq_grp = container_of(napi,
+ struct ath11k_ext_irq_grp,
+ napi);
+ struct ath11k_base *ab = irq_grp->ab;
+ int work_done;
+ int i;
+
+ work_done = ath11k_dp_service_srng(ab, irq_grp, budget);
+ if (work_done < budget) {
+ napi_complete_done(napi, work_done);
+ for (i = 0; i < irq_grp->num_irq; i++)
+ enable_irq(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
+ }
+
+ if (work_done > budget)
+ work_done = budget;
+
+ return work_done;
+}
+
+static irqreturn_t ath11k_pci_ext_interrupt_handler(int irq, void *arg)
+{
+ struct ath11k_ext_irq_grp *irq_grp = arg;
+ struct ath11k_base *ab = irq_grp->ab;
+ int i;
+
+ if (!test_bit(ATH11K_FLAG_EXT_IRQ_ENABLED, &ab->dev_flags))
+ return IRQ_HANDLED;
+
+ ath11k_dbg(irq_grp->ab, ATH11K_DBG_PCI, "ext irq:%d\n", irq);
+
+ /* last interrupt received for this group */
+ irq_grp->timestamp = jiffies;
+
+ for (i = 0; i < irq_grp->num_irq; i++)
+ disable_irq_nosync(irq_grp->ab->irq_num[irq_grp->irqs[i]]);
+
+ napi_schedule(&irq_grp->napi);
+
+ return IRQ_HANDLED;
+}
+
+static int ath11k_pci_ext_irq_config(struct ath11k_base *ab)
+{
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+ int i, j, ret, num_vectors = 0;
+ u32 user_base_data = 0, base_vector = 0;
+
+ ret = ath11k_pci_get_user_msi_assignment(ath11k_pci_priv(ab), "DP",
+ &num_vectors,
+ &user_base_data,
+ &base_vector);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
+ struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
+ u32 num_irq = 0;
+
+ irq_grp->ab = ab;
+ irq_grp->grp_id = i;
+ init_dummy_netdev(&irq_grp->napi_ndev);
+ netif_napi_add(&irq_grp->napi_ndev, &irq_grp->napi,
+ ath11k_pci_ext_grp_napi_poll, NAPI_POLL_WEIGHT);
+
+ if (ab->hw_params.ring_mask->tx[i] ||
+ ab->hw_params.ring_mask->rx[i] ||
+ ab->hw_params.ring_mask->rx_err[i] ||
+ ab->hw_params.ring_mask->rx_wbm_rel[i] ||
+ ab->hw_params.ring_mask->reo_status[i] ||
+ ab->hw_params.ring_mask->rxdma2host[i] ||
+ ab->hw_params.ring_mask->host2rxdma[i] ||
+ ab->hw_params.ring_mask->rx_mon_status[i]) {
+ num_irq = 1;
+ }
+
+ irq_grp->num_irq = num_irq;
+ irq_grp->irqs[0] = ATH11K_PCI_IRQ_DP_OFFSET + i;
+
+ for (j = 0; j < irq_grp->num_irq; j++) {
+ int irq_idx = irq_grp->irqs[j];
+ int vector = (i % num_vectors) + base_vector;
+ int irq = ath11k_pci_get_msi_irq(ab->dev, vector);
+
+ ab->irq_num[irq_idx] = irq;
+
+ ath11k_dbg(ab, ATH11K_DBG_PCI,
+ "irq:%d group:%d\n", irq, i);
+
+ irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY);
+ ret = request_irq(irq, ath11k_pci_ext_interrupt_handler,
+ ab_pci->irq_flags,
+ "DP_EXT_IRQ", irq_grp);
+ if (ret) {
+ ath11k_err(ab, "failed request irq %d: %d\n",
+ vector, ret);
+ return ret;
+ }
+ }
+ ath11k_pci_ext_grp_disable(irq_grp);
+ }
+
+ return 0;
+}
+
+int ath11k_pci_set_irq_affinity_hint(struct ath11k_pci *ab_pci,
+ const struct cpumask *m)
+{
+ if (test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
+ return 0;
+
+ return irq_set_affinity_hint(ab_pci->pdev->irq, m);
+}
+
+int ath11k_pci_config_irq(struct ath11k_base *ab)
+{
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+ struct ath11k_ce_pipe *ce_pipe;
+ u32 msi_data_start;
+ u32 msi_data_count, msi_data_idx;
+ u32 msi_irq_start;
+ unsigned int msi_data;
+ int irq, i, ret, irq_idx;
+
+ ret = ath11k_pci_get_user_msi_assignment(ath11k_pci_priv(ab),
+ "CE", &msi_data_count,
+ &msi_data_start, &msi_irq_start);
+ if (ret)
+ return ret;
+
+ ret = ath11k_pci_set_irq_affinity_hint(ab_pci, cpumask_of(0));
+ if (ret) {
+ ath11k_err(ab, "failed to set irq affinity %d\n", ret);
+ return ret;
+ }
+
+ /* Configure CE irqs */
+ for (i = 0, msi_data_idx = 0; i < ab->hw_params.ce_count; i++) {
+ if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+
+ msi_data = (msi_data_idx % msi_data_count) + msi_irq_start;
+ irq = ath11k_pci_get_msi_irq(ab->dev, msi_data);
+ ce_pipe = &ab->ce.ce_pipe[i];
+
+ irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
+
+ tasklet_setup(&ce_pipe->intr_tq, ath11k_pci_ce_tasklet);
+
+ ret = request_irq(irq, ath11k_pci_ce_interrupt_handler,
+ ab_pci->irq_flags, irq_name[irq_idx],
+ ce_pipe);
+ if (ret) {
+ ath11k_err(ab, "failed to request irq %d: %d\n",
+ irq_idx, ret);
+ goto err_irq_affinity_cleanup;
+ }
+
+ ab->irq_num[irq_idx] = irq;
+ msi_data_idx++;
+
+ ath11k_pci_ce_irq_disable(ab, i);
+ }
+
+ ret = ath11k_pci_ext_irq_config(ab);
+ if (ret)
+ goto err_irq_affinity_cleanup;
+
+ return 0;
+
+err_irq_affinity_cleanup:
+ ath11k_pci_set_irq_affinity_hint(ab_pci, NULL);
+ return ret;
+}
+
+void ath11k_pci_ce_irqs_enable(struct ath11k_base *ab)
+{
+ int i;
+
+ set_bit(ATH11K_FLAG_CE_IRQ_ENABLED, &ab->dev_flags);
+
+ for (i = 0; i < ab->hw_params.ce_count; i++) {
+ if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+ ath11k_pci_ce_irq_enable(ab, i);
+ }
+}
+
+static void ath11k_pci_kill_tasklets(struct ath11k_base *ab)
+{
+ int i;
+
+ for (i = 0; i < ab->hw_params.ce_count; i++) {
+ struct ath11k_ce_pipe *ce_pipe = &ab->ce.ce_pipe[i];
+
+ if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
+ continue;
+
+ tasklet_kill(&ce_pipe->intr_tq);
+ }
+}
+
+void ath11k_pci_ce_irq_disable_sync(struct ath11k_base *ab)
+{
+ ath11k_pci_ce_irqs_disable(ab);
+ ath11k_pci_sync_ce_irqs(ab);
+ ath11k_pci_kill_tasklets(ab);
+}
+
+void ath11k_pci_stop(struct ath11k_base *ab)
+{
+ ath11k_pci_ce_irq_disable_sync(ab);
+ ath11k_ce_cleanup_pipes(ab);
+}
+
+int ath11k_pci_start(struct ath11k_base *ab)
+{
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
+
+ set_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags);
+
+ /* TODO: for now don't restore ASPM in case of single MSI
+ * vector as MHI register reading in M2 causes system hang.
+ */
+ if (test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags))
+ ath11k_pci_aspm_restore(ab_pci);
+ else
+ ath11k_info(ab, "leaving PCI ASPM disabled to avoid MHI M2 problems\n");
+
+ ath11k_pci_ce_irqs_enable(ab);
+ ath11k_ce_rx_post_buf(ab);
+
+ return 0;
+}
+
+int ath11k_pci_map_service_to_pipe(struct ath11k_base *ab, u16 service_id,
+ u8 *ul_pipe, u8 *dl_pipe)
+{
+ const struct service_to_pipe *entry;
+ bool ul_set = false, dl_set = false;
+ int i;
+
+ for (i = 0; i < ab->hw_params.svc_to_ce_map_len; i++) {
+ entry = &ab->hw_params.svc_to_ce_map[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;
+
+ return 0;
+}
diff --git a/drivers/net/wireless/ath/ath11k/pci_cmn.h b/drivers/net/wireless/ath/ath11k/pci_cmn.h
new file mode 100644
index 0000000..5fb1cf1
--- /dev/null
+++ b/drivers/net/wireless/ath/ath11k/pci_cmn.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021, Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef _ATH11K_PCI_CMN_H
+#define _ATH11K_PCI_CMN_H
+
+#include "core.h"
+#include "pci.h"
+
+#define ATH11K_PCI_IRQ_CE0_OFFSET 3
+#define ATH11K_PCI_IRQ_DP_OFFSET 14
+
+#define ATH11K_PCI_WINDOW_ENABLE_BIT 0x40000000
+#define ATH11K_PCI_WINDOW_REG_ADDRESS 0x310c
+#define ATH11K_PCI_WINDOW_VALUE_MASK GENMASK(24, 19)
+#define ATH11K_PCI_WINDOW_START 0x80000
+#define ATH11K_PCI_WINDOW_RANGE_MASK GENMASK(18, 0)
+
+/* BAR0 + 4k is always accessible, and no
+ * need to force wakeup.
+ * 4K - 32 = 0xFE0
+ */
+#define ATH11K_PCI_ACCESS_ALWAYS_OFF 0xFE0
+
+int ath11k_pci_get_user_msi_assignment(struct ath11k_pci *ar_pci, char *user_name,
+ int *num_vectors, u32 *user_base_data,
+ u32 *base_vector);
+int ath11k_pci_get_msi_irq(struct device *dev, unsigned int vector);
+void ath11k_pci_write32(struct ath11k_base *ab, u32 offset, u32 value);
+u32 ath11k_pci_read32(struct ath11k_base *ab, u32 offset);
+void ath11k_pci_get_msi_address(struct ath11k_base *ab, u32 *msi_addr_lo,
+ u32 *msi_addr_hi);
+void ath11k_pci_get_ce_msi_idx(struct ath11k_base *ab, u32 ce_id, u32 *msi_idx);
+void ath11k_pci_free_irq(struct ath11k_base *ab);
+int ath11k_pci_config_irq(struct ath11k_base *ab);
+void ath11k_pci_ext_irq_enable(struct ath11k_base *ab);
+void ath11k_pci_ext_irq_disable(struct ath11k_base *ab);
+void ath11k_pci_stop(struct ath11k_base *ab);
+int ath11k_pci_start(struct ath11k_base *ab);
+int ath11k_pci_map_service_to_pipe(struct ath11k_base *ab, u16 service_id,
+ u8 *ul_pipe, u8 *dl_pipe);
+void ath11k_pci_ce_irqs_enable(struct ath11k_base *ab);
+void ath11k_pci_ce_irq_disable_sync(struct ath11k_base *ab);
+int ath11k_get_user_msi_assignment(struct ath11k_base *ab, char *user_name,
+ int *num_vectors, u32 *user_base_data,
+ u32 *base_vector);
+void ath11k_pci_aspm_restore(struct ath11k_pci *ab_pci);
+int ath11k_pci_set_irq_affinity_hint(struct ath11k_pci *ab_pci,
+ const struct cpumask *m);
+#endif
--
2.7.4
