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linuxdebug/drivers/net/wireless/ath/wil6210/pcie_bus.c

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// SPDX-License-Identifier: ISC
/*
* Copyright (c) 2012-2017 Qualcomm Atheros, Inc.
* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/moduleparam.h>
#include <linux/interrupt.h>
#include <linux/suspend.h>
#include "wil6210.h"
#include <linux/rtnetlink.h>
#include <linux/pm_runtime.h>
static int n_msi = 3;
module_param(n_msi, int, 0444);
MODULE_PARM_DESC(n_msi, " Use MSI interrupt: 0 - use INTx, 1 - single, or 3 - (default) ");
bool ftm_mode;
module_param(ftm_mode, bool, 0444);
MODULE_PARM_DESC(ftm_mode, " Set factory test mode, default - false");
static int wil6210_pm_notify(struct notifier_block *notify_block,
unsigned long mode, void *unused);
static
int wil_set_capabilities(struct wil6210_priv *wil)
{
const char *wil_fw_name;
u32 jtag_id = wil_r(wil, RGF_USER_JTAG_DEV_ID);
u8 chip_revision = (wil_r(wil, RGF_USER_REVISION_ID) &
RGF_USER_REVISION_ID_MASK);
int platform_capa;
struct fw_map *iccm_section, *sct;
bitmap_zero(wil->hw_capa, hw_capa_last);
bitmap_zero(wil->fw_capabilities, WMI_FW_CAPABILITY_MAX);
bitmap_zero(wil->platform_capa, WIL_PLATFORM_CAPA_MAX);
wil->wil_fw_name = ftm_mode ? WIL_FW_NAME_FTM_DEFAULT :
WIL_FW_NAME_DEFAULT;
wil->chip_revision = chip_revision;
switch (jtag_id) {
case JTAG_DEV_ID_SPARROW:
memcpy(fw_mapping, sparrow_fw_mapping,
sizeof(sparrow_fw_mapping));
switch (chip_revision) {
case REVISION_ID_SPARROW_D0:
wil->hw_name = "Sparrow D0";
wil->hw_version = HW_VER_SPARROW_D0;
wil_fw_name = ftm_mode ? WIL_FW_NAME_FTM_SPARROW_PLUS :
WIL_FW_NAME_SPARROW_PLUS;
if (wil_fw_verify_file_exists(wil, wil_fw_name))
wil->wil_fw_name = wil_fw_name;
sct = wil_find_fw_mapping("mac_rgf_ext");
if (!sct) {
wil_err(wil, "mac_rgf_ext section not found in fw_mapping\n");
return -EINVAL;
}
memcpy(sct, &sparrow_d0_mac_rgf_ext, sizeof(*sct));
break;
case REVISION_ID_SPARROW_B0:
wil->hw_name = "Sparrow B0";
wil->hw_version = HW_VER_SPARROW_B0;
break;
default:
wil->hw_name = "Unknown";
wil->hw_version = HW_VER_UNKNOWN;
break;
}
wil->rgf_fw_assert_code_addr = SPARROW_RGF_FW_ASSERT_CODE;
wil->rgf_ucode_assert_code_addr = SPARROW_RGF_UCODE_ASSERT_CODE;
break;
case JTAG_DEV_ID_TALYN:
wil->hw_name = "Talyn-MA";
wil->hw_version = HW_VER_TALYN;
memcpy(fw_mapping, talyn_fw_mapping, sizeof(talyn_fw_mapping));
wil->rgf_fw_assert_code_addr = TALYN_RGF_FW_ASSERT_CODE;
wil->rgf_ucode_assert_code_addr = TALYN_RGF_UCODE_ASSERT_CODE;
if (wil_r(wil, RGF_USER_OTP_HW_RD_MACHINE_1) &
BIT_NO_FLASH_INDICATION)
set_bit(hw_capa_no_flash, wil->hw_capa);
wil_fw_name = ftm_mode ? WIL_FW_NAME_FTM_TALYN :
WIL_FW_NAME_TALYN;
if (wil_fw_verify_file_exists(wil, wil_fw_name))
wil->wil_fw_name = wil_fw_name;
break;
case JTAG_DEV_ID_TALYN_MB:
wil->hw_name = "Talyn-MB";
wil->hw_version = HW_VER_TALYN_MB;
memcpy(fw_mapping, talyn_mb_fw_mapping,
sizeof(talyn_mb_fw_mapping));
wil->rgf_fw_assert_code_addr = TALYN_RGF_FW_ASSERT_CODE;
wil->rgf_ucode_assert_code_addr = TALYN_RGF_UCODE_ASSERT_CODE;
set_bit(hw_capa_no_flash, wil->hw_capa);
wil->use_enhanced_dma_hw = true;
wil->use_rx_hw_reordering = true;
wil->use_compressed_rx_status = true;
wil_fw_name = ftm_mode ? WIL_FW_NAME_FTM_TALYN :
WIL_FW_NAME_TALYN;
if (wil_fw_verify_file_exists(wil, wil_fw_name))
wil->wil_fw_name = wil_fw_name;
break;
default:
wil_err(wil, "Unknown board hardware, chip_id 0x%08x, chip_revision 0x%08x\n",
jtag_id, chip_revision);
wil->hw_name = "Unknown";
wil->hw_version = HW_VER_UNKNOWN;
return -EINVAL;
}
wil_init_txrx_ops(wil);
iccm_section = wil_find_fw_mapping("fw_code");
if (!iccm_section) {
wil_err(wil, "fw_code section not found in fw_mapping\n");
return -EINVAL;
}
wil->iccm_base = iccm_section->host;
wil_info(wil, "Board hardware is %s, flash %sexist\n", wil->hw_name,
test_bit(hw_capa_no_flash, wil->hw_capa) ? "doesn't " : "");
/* Get platform capabilities */
if (wil->platform_ops.get_capa) {
platform_capa =
wil->platform_ops.get_capa(wil->platform_handle);
memcpy(wil->platform_capa, &platform_capa,
min(sizeof(wil->platform_capa), sizeof(platform_capa)));
}
wil_info(wil, "platform_capa 0x%lx\n", *wil->platform_capa);
/* extract FW capabilities from file without loading the FW */
wil_request_firmware(wil, wil->wil_fw_name, false);
wil_refresh_fw_capabilities(wil);
return 0;
}
void wil_disable_irq(struct wil6210_priv *wil)
{
int irq = wil->pdev->irq;
disable_irq(irq);
if (wil->n_msi == 3) {
disable_irq(irq + 1);
disable_irq(irq + 2);
}
}
void wil_enable_irq(struct wil6210_priv *wil)
{
int irq = wil->pdev->irq;
enable_irq(irq);
if (wil->n_msi == 3) {
enable_irq(irq + 1);
enable_irq(irq + 2);
}
}
static void wil_remove_all_additional_vifs(struct wil6210_priv *wil)
{
struct wil6210_vif *vif;
int i;
for (i = 1; i < GET_MAX_VIFS(wil); i++) {
vif = wil->vifs[i];
if (vif) {
wil_vif_prepare_stop(vif);
wil_vif_remove(wil, vif->mid);
}
}
}
/* Bus ops */
static int wil_if_pcie_enable(struct wil6210_priv *wil)
{
struct pci_dev *pdev = wil->pdev;
int rc;
/* on platforms with buggy ACPI, pdev->msi_enabled may be set to
* allow pci_enable_device to work. This indicates INTx was not routed
* and only MSI should be used
*/
int msi_only = pdev->msi_enabled;
wil_dbg_misc(wil, "if_pcie_enable\n");
pci_set_master(pdev);
/* how many MSI interrupts to request? */
switch (n_msi) {
case 3:
case 1:
wil_dbg_misc(wil, "Setup %d MSI interrupts\n", n_msi);
break;
case 0:
wil_dbg_misc(wil, "MSI interrupts disabled, use INTx\n");
break;
default:
wil_err(wil, "Invalid n_msi=%d, default to 1\n", n_msi);
n_msi = 1;
}
if (n_msi == 3 &&
pci_alloc_irq_vectors(pdev, n_msi, n_msi, PCI_IRQ_MSI) < n_msi) {
wil_err(wil, "3 MSI mode failed, try 1 MSI\n");
n_msi = 1;
}
if (n_msi == 1 && pci_enable_msi(pdev)) {
wil_err(wil, "pci_enable_msi failed, use INTx\n");
n_msi = 0;
}
wil->n_msi = n_msi;
if (wil->n_msi == 0 && msi_only) {
wil_err(wil, "Interrupt pin not routed, unable to use INTx\n");
rc = -ENODEV;
goto stop_master;
}
rc = wil6210_init_irq(wil, pdev->irq);
if (rc)
goto release_vectors;
/* need reset here to obtain MAC */
mutex_lock(&wil->mutex);
rc = wil_reset(wil, false);
mutex_unlock(&wil->mutex);
if (rc)
goto release_irq;
return 0;
release_irq:
wil6210_fini_irq(wil, pdev->irq);
release_vectors:
/* safe to call if no allocation */
pci_free_irq_vectors(pdev);
stop_master:
pci_clear_master(pdev);
return rc;
}
static int wil_if_pcie_disable(struct wil6210_priv *wil)
{
struct pci_dev *pdev = wil->pdev;
wil_dbg_misc(wil, "if_pcie_disable\n");
pci_clear_master(pdev);
/* disable and release IRQ */
wil6210_fini_irq(wil, pdev->irq);
/* safe to call if no MSI */
pci_disable_msi(pdev);
/* TODO: disable HW */
return 0;
}
static int wil_platform_rop_ramdump(void *wil_handle, void *buf, uint32_t size)
{
struct wil6210_priv *wil = wil_handle;
if (!wil)
return -EINVAL;
return wil_fw_copy_crash_dump(wil, buf, size);
}
static int wil_platform_rop_fw_recovery(void *wil_handle)
{
struct wil6210_priv *wil = wil_handle;
if (!wil)
return -EINVAL;
wil_fw_error_recovery(wil);
return 0;
}
static void wil_platform_ops_uninit(struct wil6210_priv *wil)
{
if (wil->platform_ops.uninit)
wil->platform_ops.uninit(wil->platform_handle);
memset(&wil->platform_ops, 0, sizeof(wil->platform_ops));
}
static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct wil6210_priv *wil;
struct device *dev = &pdev->dev;
int rc;
const struct wil_platform_rops rops = {
.ramdump = wil_platform_rop_ramdump,
.fw_recovery = wil_platform_rop_fw_recovery,
};
u32 bar_size = pci_resource_len(pdev, 0);
int dma_addr_size[] = {64, 48, 40, 32}; /* keep descending order */
int i, start_idx;
/* check HW */
dev_info(&pdev->dev, WIL_NAME
" device found [%04x:%04x] (rev %x) bar size 0x%x\n",
(int)pdev->vendor, (int)pdev->device, (int)pdev->revision,
bar_size);
if ((bar_size < WIL6210_MIN_MEM_SIZE) ||
(bar_size > WIL6210_MAX_MEM_SIZE)) {
dev_err(&pdev->dev, "Unexpected BAR0 size 0x%x\n",
bar_size);
return -ENODEV;
}
wil = wil_if_alloc(dev);
if (IS_ERR(wil)) {
rc = (int)PTR_ERR(wil);
dev_err(dev, "wil_if_alloc failed: %d\n", rc);
return rc;
}
wil->pdev = pdev;
pci_set_drvdata(pdev, wil);
wil->bar_size = bar_size;
/* rollback to if_free */
wil->platform_handle =
wil_platform_init(&pdev->dev, &wil->platform_ops, &rops, wil);
if (!wil->platform_handle) {
rc = -ENODEV;
wil_err(wil, "wil_platform_init failed\n");
goto if_free;
}
/* rollback to err_plat */
rc = pci_enable_device(pdev);
if (rc && pdev->msi_enabled == 0) {
wil_err(wil,
"pci_enable_device failed, retry with MSI only\n");
/* Work around for platforms that can't allocate IRQ:
* retry with MSI only
*/
pdev->msi_enabled = 1;
rc = pci_enable_device(pdev);
}
if (rc) {
wil_err(wil,
"pci_enable_device failed, even with MSI only\n");
goto err_plat;
}
/* rollback to err_disable_pdev */
pci_set_power_state(pdev, PCI_D0);
rc = pci_request_region(pdev, 0, WIL_NAME);
if (rc) {
wil_err(wil, "pci_request_region failed\n");
goto err_disable_pdev;
}
/* rollback to err_release_reg */
wil->csr = pci_ioremap_bar(pdev, 0);
if (!wil->csr) {
wil_err(wil, "pci_ioremap_bar failed\n");
rc = -ENODEV;
goto err_release_reg;
}
/* rollback to err_iounmap */
wil_info(wil, "CSR at %pR -> 0x%p\n", &pdev->resource[0], wil->csr);
rc = wil_set_capabilities(wil);
if (rc) {
wil_err(wil, "wil_set_capabilities failed, rc %d\n", rc);
goto err_iounmap;
}
/* device supports >32bit addresses.
* for legacy DMA start from 48 bit.
*/
start_idx = wil->use_enhanced_dma_hw ? 0 : 1;
for (i = start_idx; i < ARRAY_SIZE(dma_addr_size); i++) {
rc = dma_set_mask_and_coherent(dev,
DMA_BIT_MASK(dma_addr_size[i]));
if (rc) {
dev_err(dev, "dma_set_mask_and_coherent(%d) failed: %d\n",
dma_addr_size[i], rc);
continue;
}
dev_info(dev, "using dma mask %d", dma_addr_size[i]);
wil->dma_addr_size = dma_addr_size[i];
break;
}
if (wil->dma_addr_size == 0)
goto err_iounmap;
wil6210_clear_irq(wil);
/* FW should raise IRQ when ready */
rc = wil_if_pcie_enable(wil);
if (rc) {
wil_err(wil, "Enable device failed\n");
goto err_iounmap;
}
/* rollback to bus_disable */
wil_clear_fw_log_addr(wil);
rc = wil_if_add(wil);
if (rc) {
wil_err(wil, "wil_if_add failed: %d\n", rc);
goto bus_disable;
}
/* in case of WMI-only FW, perform full reset and FW loading */
if (test_bit(WMI_FW_CAPABILITY_WMI_ONLY, wil->fw_capabilities)) {
wil_dbg_misc(wil, "Loading WMI only FW\n");
mutex_lock(&wil->mutex);
rc = wil_reset(wil, true);
mutex_unlock(&wil->mutex);
if (rc) {
wil_err(wil, "failed to load WMI only FW\n");
/* ignore the error to allow debugging */
}
}
if (IS_ENABLED(CONFIG_PM))
wil->pm_notify.notifier_call = wil6210_pm_notify;
rc = register_pm_notifier(&wil->pm_notify);
if (rc)
/* Do not fail the driver initialization, as suspend can
* be prevented in a later phase if needed
*/
wil_err(wil, "register_pm_notifier failed: %d\n", rc);
wil6210_debugfs_init(wil);
wil_pm_runtime_allow(wil);
return 0;
bus_disable:
wil_if_pcie_disable(wil);
err_iounmap:
pci_iounmap(pdev, wil->csr);
err_release_reg:
pci_release_region(pdev, 0);
err_disable_pdev:
pci_disable_device(pdev);
err_plat:
wil_platform_ops_uninit(wil);
if_free:
wil_if_free(wil);
return rc;
}
static void wil_pcie_remove(struct pci_dev *pdev)
{
struct wil6210_priv *wil = pci_get_drvdata(pdev);
void __iomem *csr = wil->csr;
wil_dbg_misc(wil, "pcie_remove\n");
unregister_pm_notifier(&wil->pm_notify);
wil_pm_runtime_forbid(wil);
wil6210_debugfs_remove(wil);
rtnl_lock();
wiphy_lock(wil->wiphy);
wil_p2p_wdev_free(wil);
wil_remove_all_additional_vifs(wil);
wiphy_unlock(wil->wiphy);
rtnl_unlock();
wil_if_remove(wil);
wil_if_pcie_disable(wil);
pci_iounmap(pdev, csr);
pci_release_region(pdev, 0);
pci_disable_device(pdev);
wil_platform_ops_uninit(wil);
wil_if_free(wil);
}
static const struct pci_device_id wil6210_pcie_ids[] = {
{ PCI_DEVICE(0x1ae9, 0x0310) },
{ PCI_DEVICE(0x1ae9, 0x0302) }, /* same as above, firmware broken */
{ PCI_DEVICE(0x17cb, 0x1201) }, /* Talyn */
{ /* end: all zeroes */ },
};
MODULE_DEVICE_TABLE(pci, wil6210_pcie_ids);
static int wil6210_suspend(struct device *dev, bool is_runtime)
{
int rc = 0;
struct pci_dev *pdev = to_pci_dev(dev);
struct wil6210_priv *wil = pci_get_drvdata(pdev);
bool keep_radio_on, active_ifaces;
wil_dbg_pm(wil, "suspend: %s\n", is_runtime ? "runtime" : "system");
mutex_lock(&wil->vif_mutex);
active_ifaces = wil_has_active_ifaces(wil, true, false);
mutex_unlock(&wil->vif_mutex);
keep_radio_on = active_ifaces && wil->keep_radio_on_during_sleep;
rc = wil_can_suspend(wil, is_runtime);
if (rc)
goto out;
rc = wil_suspend(wil, is_runtime, keep_radio_on);
if (!rc) {
/* In case radio stays on, platform device will control
* PCIe master
*/
if (!keep_radio_on) {
/* disable bus mastering */
pci_clear_master(pdev);
wil->suspend_stats.r_off.successful_suspends++;
} else {
wil->suspend_stats.r_on.successful_suspends++;
}
}
out:
return rc;
}
static int wil6210_resume(struct device *dev, bool is_runtime)
{
int rc = 0;
struct pci_dev *pdev = to_pci_dev(dev);
struct wil6210_priv *wil = pci_get_drvdata(pdev);
bool keep_radio_on, active_ifaces;
wil_dbg_pm(wil, "resume: %s\n", is_runtime ? "runtime" : "system");
mutex_lock(&wil->vif_mutex);
active_ifaces = wil_has_active_ifaces(wil, true, false);
mutex_unlock(&wil->vif_mutex);
keep_radio_on = active_ifaces && wil->keep_radio_on_during_sleep;
/* In case radio stays on, platform device will control
* PCIe master
*/
if (!keep_radio_on)
/* allow master */
pci_set_master(pdev);
rc = wil_resume(wil, is_runtime, keep_radio_on);
if (rc) {
wil_err(wil, "device failed to resume (%d)\n", rc);
if (!keep_radio_on) {
pci_clear_master(pdev);
wil->suspend_stats.r_off.failed_resumes++;
} else {
wil->suspend_stats.r_on.failed_resumes++;
}
} else {
if (keep_radio_on)
wil->suspend_stats.r_on.successful_resumes++;
else
wil->suspend_stats.r_off.successful_resumes++;
}
return rc;
}
static int wil6210_pm_notify(struct notifier_block *notify_block,
unsigned long mode, void *unused)
{
struct wil6210_priv *wil = container_of(
notify_block, struct wil6210_priv, pm_notify);
int rc = 0;
enum wil_platform_event evt;
wil_dbg_pm(wil, "pm_notify: mode (%ld)\n", mode);
switch (mode) {
case PM_HIBERNATION_PREPARE:
case PM_SUSPEND_PREPARE:
case PM_RESTORE_PREPARE:
rc = wil_can_suspend(wil, false);
if (rc)
break;
evt = WIL_PLATFORM_EVT_PRE_SUSPEND;
if (wil->platform_ops.notify)
rc = wil->platform_ops.notify(wil->platform_handle,
evt);
break;
case PM_POST_SUSPEND:
case PM_POST_HIBERNATION:
case PM_POST_RESTORE:
evt = WIL_PLATFORM_EVT_POST_SUSPEND;
if (wil->platform_ops.notify)
rc = wil->platform_ops.notify(wil->platform_handle,
evt);
break;
default:
wil_dbg_pm(wil, "unhandled notify mode %ld\n", mode);
break;
}
wil_dbg_pm(wil, "notification mode %ld: rc (%d)\n", mode, rc);
return rc;
}
static int __maybe_unused wil6210_pm_suspend(struct device *dev)
{
return wil6210_suspend(dev, false);
}
static int __maybe_unused wil6210_pm_resume(struct device *dev)
{
return wil6210_resume(dev, false);
}
static int __maybe_unused wil6210_pm_runtime_idle(struct device *dev)
{
struct wil6210_priv *wil = dev_get_drvdata(dev);
wil_dbg_pm(wil, "Runtime idle\n");
return wil_can_suspend(wil, true);
}
static int __maybe_unused wil6210_pm_runtime_resume(struct device *dev)
{
return wil6210_resume(dev, true);
}
static int __maybe_unused wil6210_pm_runtime_suspend(struct device *dev)
{
struct wil6210_priv *wil = dev_get_drvdata(dev);
if (test_bit(wil_status_suspended, wil->status)) {
wil_dbg_pm(wil, "trying to suspend while suspended\n");
return 1;
}
return wil6210_suspend(dev, true);
}
static const struct dev_pm_ops wil6210_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(wil6210_pm_suspend, wil6210_pm_resume)
SET_RUNTIME_PM_OPS(wil6210_pm_runtime_suspend,
wil6210_pm_runtime_resume,
wil6210_pm_runtime_idle)
};
static struct pci_driver wil6210_driver = {
.probe = wil_pcie_probe,
.remove = wil_pcie_remove,
.id_table = wil6210_pcie_ids,
.name = WIL_NAME,
.driver = {
.pm = &wil6210_pm_ops,
},
};
static int __init wil6210_driver_init(void)
{
int rc;
rc = wil_platform_modinit();
if (rc)
return rc;
rc = pci_register_driver(&wil6210_driver);
if (rc)
wil_platform_modexit();
return rc;
}
module_init(wil6210_driver_init);
static void __exit wil6210_driver_exit(void)
{
pci_unregister_driver(&wil6210_driver);
wil_platform_modexit();
}
module_exit(wil6210_driver_exit);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Qualcomm Atheros <wil6210@qca.qualcomm.com>");
MODULE_DESCRIPTION("Driver for 60g WiFi WIL6210 card");
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