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mt76/mt7925/pci.c
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Wentao GuanandFelix Fietkau 29d3554195 wifi: mt76: mt7925: cancel pending mlo_pm_work 
If the device is reset, suspended or unregistered within that window,
the pending work can still run and access vif/bss data that may already
be freed, or send MCU commands while the firmware is not available.

Add cancel_delayed_work_sync(&dev->mlo_pm_work) in all relevant teardown
and suspend paths:

 - mt7925_mac_reset_work()        (chip reset recovery)
 - mt7925e_unregister_device()    (PCIe unbind)
 - mt7925_pci_suspend()           (PCIe bus suspend)
 - mt7925_suspend()               (mac80211 suspend)
 - mt7925u_suspend()              (USB bus / runtime suspend)

This ensures the work is stopped before the device state becomes
invalid.

Assisted-by: kimi-cli:kimi-k2.7 code
Assisted-by: atomcode:glm-5.2 #Reported-by

Fixes: 276a568832577 ("wifi: mt76: mt7925: update the power-saving flow")
Cc: [email protected]
Signed-off-by: Wentao Guan <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
2026-07-21 15:34:22 +02:00

935 lines
30 KiB
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// SPDX-License-Identifier: BSD-3-Clause-Clear
/* Copyright (C) 2023 MediaTek Inc. */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include "mt7925.h"
#include "mac.h"
#include "mcu.h"
#include "regd.h"
#include "../dma.h"
static const struct pci_device_id mt7925_pci_device_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7925),
.driver_data = (kernel_ulong_t)MT7925_FIRMWARE_WM },
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0717),
.driver_data = (kernel_ulong_t)MT7925_FIRMWARE_WM },
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7927),
.driver_data = (kernel_ulong_t)MT7927_FIRMWARE_WM },
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x6639),
.driver_data = (kernel_ulong_t)MT7927_FIRMWARE_WM },
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0738),
.driver_data = (kernel_ulong_t)MT7927_FIRMWARE_WM },
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7928),
.driver_data = (kernel_ulong_t)MT7928_FIRMWARE_WM },
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7935),
.driver_data = (kernel_ulong_t)MT7928_FIRMWARE_WM },
{ },
};
static bool mt7925_disable_aspm;
module_param_named(disable_aspm, mt7925_disable_aspm, bool, 0644);
MODULE_PARM_DESC(disable_aspm, "disable PCI ASPM support");
static int mt7925e_init_reset(struct mt792x_dev *dev)
{
return mt792x_wpdma_reset(dev, true);
}
static void mt7925e_unregister_device(struct mt792x_dev *dev)
{
int i;
struct mt76_connac_pm *pm = &dev->pm;
struct ieee80211_hw *hw = mt76_hw(dev);
if (dev->phy.chip_cap & MT792x_CHIP_CAP_WF_RF_PIN_CTRL_EVT_EN)
wiphy_rfkill_stop_polling(hw->wiphy);
cancel_work_sync(&dev->reset_work);
cancel_work_sync(&dev->init_work);
mt76_unregister_device(&dev->mt76);
mt76_for_each_q_rx(&dev->mt76, i)
napi_disable(&dev->mt76.napi[i]);
cancel_delayed_work_sync(&pm->ps_work);
cancel_delayed_work_sync(&dev->mlo_pm_work);
cancel_work_sync(&pm->wake_work);
mt7925_tx_token_put(dev);
__mt792x_mcu_drv_pmctrl(dev);
mt792x_dma_cleanup(dev);
mt792x_wfsys_reset(dev);
skb_queue_purge(&dev->mt76.mcu.res_q);
tasklet_disable(&dev->mt76.irq_tasklet);
}
static void mt7925_reg_remap_restore(struct mt792x_dev *dev)
{
/* remap to ori status */
if (unlikely(dev->backup_l1)) {
dev->bus_ops->wr(&dev->mt76, MT_HIF_REMAP_L1, dev->backup_l1);
dev->backup_l1 = 0;
}
if (dev->backup_l2) {
dev->bus_ops->wr(&dev->mt76, MT_HIF_REMAP_L2, dev->backup_l2);
dev->backup_l2 = 0;
}
}
static u32 mt7925_reg_map_l1(struct mt792x_dev *dev, u32 addr)
{
u32 offset = FIELD_GET(MT_HIF_REMAP_L1_OFFSET, addr);
u32 base = FIELD_GET(MT_HIF_REMAP_L1_BASE, addr);
dev->backup_l1 = dev->bus_ops->rr(&dev->mt76, MT_HIF_REMAP_L1);
dev->bus_ops->rmw(&dev->mt76, MT_HIF_REMAP_L1,
MT_HIF_REMAP_L1_MASK,
FIELD_PREP(MT_HIF_REMAP_L1_MASK, base));
/* use read to push write */
dev->bus_ops->rr(&dev->mt76, MT_HIF_REMAP_L1);
return MT_HIF_REMAP_BASE_L1 + offset;
}
static u32 mt7925_reg_map_l2(struct mt792x_dev *dev, u32 addr)
{
u32 base = FIELD_GET(MT_HIF_REMAP_L1_BASE, MT_HIF_REMAP_BASE_L2);
dev->backup_l2 = dev->bus_ops->rr(&dev->mt76, MT_HIF_REMAP_L1);
dev->bus_ops->rmw(&dev->mt76, MT_HIF_REMAP_L1,
MT_HIF_REMAP_L1_MASK,
FIELD_PREP(MT_HIF_REMAP_L1_MASK, base));
dev->bus_ops->wr(&dev->mt76, MT_HIF_REMAP_L2, addr);
/* use read to push write */
dev->bus_ops->rr(&dev->mt76, MT_HIF_REMAP_L1);
return MT_HIF_REMAP_BASE_L1;
}
static u32 __mt7925_reg_addr(struct mt792x_dev *dev, u32 addr)
{
static const struct mt76_connac_reg_map default_fixed_map[] = {
{ 0x830c0000, 0x000000, 0x0001000 }, /* WF_MCU_BUS_CR_REMAP */
{ 0x54000000, 0x002000, 0x0001000 }, /* WFDMA PCIE0 MCU DMA0 */
{ 0x55000000, 0x003000, 0x0001000 }, /* WFDMA PCIE0 MCU DMA1 */
{ 0x56000000, 0x004000, 0x0001000 }, /* WFDMA reserved */
{ 0x57000000, 0x005000, 0x0001000 }, /* WFDMA MCU wrap CR */
{ 0x58000000, 0x006000, 0x0001000 }, /* WFDMA PCIE1 MCU DMA0 (MEM_DMA) */
{ 0x59000000, 0x007000, 0x0001000 }, /* WFDMA PCIE1 MCU DMA1 */
{ 0x820c0000, 0x008000, 0x0004000 }, /* WF_UMAC_TOP (PLE) */
{ 0x820c8000, 0x00c000, 0x0002000 }, /* WF_UMAC_TOP (PSE) */
{ 0x820cc000, 0x00e000, 0x0002000 }, /* WF_UMAC_TOP (PP) */
{ 0x74030000, 0x010000, 0x0001000 }, /* PCIe MAC */
{ 0x820e0000, 0x020000, 0x0000400 }, /* WF_LMAC_TOP BN0 (WF_CFG) */
{ 0x820e1000, 0x020400, 0x0000200 }, /* WF_LMAC_TOP BN0 (WF_TRB) */
{ 0x820e2000, 0x020800, 0x0000400 }, /* WF_LMAC_TOP BN0 (WF_AGG) */
{ 0x820e3000, 0x020c00, 0x0000400 }, /* WF_LMAC_TOP BN0 (WF_ARB) */
{ 0x820e4000, 0x021000, 0x0000400 }, /* WF_LMAC_TOP BN0 (WF_TMAC) */
{ 0x820e5000, 0x021400, 0x0000800 }, /* WF_LMAC_TOP BN0 (WF_RMAC) */
{ 0x820ce000, 0x021c00, 0x0000200 }, /* WF_LMAC_TOP (WF_SEC) */
{ 0x820e7000, 0x021e00, 0x0000200 }, /* WF_LMAC_TOP BN0 (WF_DMA) */
{ 0x820cf000, 0x022000, 0x0001000 }, /* WF_LMAC_TOP (WF_PF) */
{ 0x820e9000, 0x023400, 0x0000200 }, /* WF_LMAC_TOP BN0 (WF_WTBLOFF) */
{ 0x820ea000, 0x024000, 0x0000200 }, /* WF_LMAC_TOP BN0 (WF_ETBF) */
{ 0x820eb000, 0x024200, 0x0000400 }, /* WF_LMAC_TOP BN0 (WF_LPON) */
{ 0x820ec000, 0x024600, 0x0000200 }, /* WF_LMAC_TOP BN0 (WF_INT) */
{ 0x820ed000, 0x024800, 0x0000800 }, /* WF_LMAC_TOP BN0 (WF_MIB) */
{ 0x820ca000, 0x026000, 0x0002000 }, /* WF_LMAC_TOP BN0 (WF_MUCOP) */
{ 0x820d0000, 0x030000, 0x0010000 }, /* WF_LMAC_TOP (WF_WTBLON) */
{ 0x40000000, 0x070000, 0x0010000 }, /* WF_UMAC_SYSRAM */
{ 0x00400000, 0x080000, 0x0010000 }, /* WF_MCU_SYSRAM */
{ 0x00410000, 0x090000, 0x0010000 }, /* WF_MCU_SYSRAM (configure register) */
{ 0x820f0000, 0x0a0000, 0x0000400 }, /* WF_LMAC_TOP BN1 (WF_CFG) */
{ 0x820f1000, 0x0a0600, 0x0000200 }, /* WF_LMAC_TOP BN1 (WF_TRB) */
{ 0x820f2000, 0x0a0800, 0x0000400 }, /* WF_LMAC_TOP BN1 (WF_AGG) */
{ 0x820f3000, 0x0a0c00, 0x0000400 }, /* WF_LMAC_TOP BN1 (WF_ARB) */
{ 0x820f4000, 0x0a1000, 0x0000400 }, /* WF_LMAC_TOP BN1 (WF_TMAC) */
{ 0x820f5000, 0x0a1400, 0x0000800 }, /* WF_LMAC_TOP BN1 (WF_RMAC) */
{ 0x820f7000, 0x0a1e00, 0x0000200 }, /* WF_LMAC_TOP BN1 (WF_DMA) */
{ 0x820f9000, 0x0a3400, 0x0000200 }, /* WF_LMAC_TOP BN1 (WF_WTBLOFF) */
{ 0x820fa000, 0x0a4000, 0x0000200 }, /* WF_LMAC_TOP BN1 (WF_ETBF) */
{ 0x820fb000, 0x0a4200, 0x0000400 }, /* WF_LMAC_TOP BN1 (WF_LPON) */
{ 0x820fc000, 0x0a4600, 0x0000200 }, /* WF_LMAC_TOP BN1 (WF_INT) */
{ 0x820fd000, 0x0a4800, 0x0000800 }, /* WF_LMAC_TOP BN1 (WF_MIB) */
{ 0x820c4000, 0x0a8000, 0x0004000 }, /* WF_LMAC_TOP BN1 (WF_MUCOP) */
{ 0x820b0000, 0x0ae000, 0x0001000 }, /* [APB2] WFSYS_ON */
{ 0x80020000, 0x0b0000, 0x0010000 }, /* WF_TOP_MISC_OFF */
{ 0x81020000, 0x0c0000, 0x0010000 }, /* WF_TOP_MISC_ON */
{ 0x7c020000, 0x0d0000, 0x0010000 }, /* CONN_INFRA, wfdma */
{ 0x7c060000, 0x0e0000, 0x0010000 }, /* CONN_INFRA, conn_host_csr_top */
{ 0x7c000000, 0x0f0000, 0x0010000 }, /* CONN_INFRA */
{ 0x70020000, 0x1f0000, 0x0010000 }, /* Reserved for CBTOP, can't switch */
{ 0x7c500000, 0x060000, 0x200000 }, /* remap */
{ 0x0, 0x0, 0x0 } /* End */
};
/* The remap table was ordered from highest to lowest frequency
* to improve lookup efficiency.
*/
static const struct mt76_connac_reg_map mt7928_fixed_map[] = {
{0x54000000, 0x002000, 0x01000}, /* WFDMA_0 (PCIE0 MCU DMA0) */
{0x55000000, 0x003000, 0x01000}, /* WFDMA_1 (PCIE0 MCU DMA1) */
{0x57000000, 0x005000, 0x01000}, /* WFDMA_3 (MCU wrap CR) */
{0x58000000, 0x006000, 0x01000}, /* WFDMA_4 (PCIE1 MCU DMA0) */
{0x59000000, 0x007000, 0x01000}, /* WFDMA_5 (PCIE1 MCU DMA1) */
{0x56000000, 0x004000, 0x01000}, /* WFDMA_2 (Reserved) */
{0x820D0000, 0x030000, 0x10000}, /* WF_LMAC_TOP (WF_WTBLON) */
{0x820C4000, 0x0A8000, 0x04000}, /* WF_LMAC_TOP (WF_UWTBL) */
{0x820C0000, 0x008000, 0x04000}, /* WF_UMAC_TOP (PLE) */
{0x820C8000, 0x00C000, 0x02000}, /* WF_UMAC_TOP (PSE) */
{0x820CC000, 0x00E000, 0x02000}, /* WF_UMAC_TOP (PP) */
{0x820F0000, 0x0A0000, 0x00400}, /* WF_LMAC_TOP (WF_CFG) */
{0x820F1000, 0x0A0600, 0x00200}, /* WF_LMAC_TOP (WF_TRB) */
{0x820F2000, 0x0A0800, 0x00400}, /* WF_LMAC_TOP (WF_AGG) */
{0x820F3000, 0x0A0C00, 0x00400}, /* WF_LMAC_TOP (WF_ARB) */
{0x820F4000, 0x0A1000, 0x00400}, /* WF_LMAC_TOP (WF_TMAC) */
{0x820F5000, 0x0A1400, 0x00800}, /* WF_LMAC_TOP (WF_RMAC) */
{0x820F7000, 0x0A1E00, 0x00200}, /* WF_LMAC_TOP (WF_DMA) */
{0x820F9000, 0x0A3400, 0x00200}, /* WF_LMAC_TOP (WF_WTBLOFF) */
{0x820FA000, 0x0A4000, 0x00200}, /* WF_LMAC_TOP (WF_ETBF) */
{0x820FB000, 0x0A4200, 0x00400}, /* WF_LMAC_TOP (WF_LPON) */
{0x820FC000, 0x0A4600, 0x00200}, /* WF_LMAC_TOP (WF_INT) */
{0x820FD000, 0x0A4800, 0x00800}, /* WF_LMAC_TOP (WF_MIB) */
{0x820E0000, 0x020000, 0x00400}, /* WF_LMAC_TOP (WF_CFG) */
{0x820E1000, 0x020400, 0x00200}, /* WF_LMAC_TOP (WF_TRB) */
{0x820E2000, 0x020800, 0x00400}, /* WF_LMAC_TOP (WF_AGG) */
{0x820E3000, 0x020C00, 0x00400}, /* WF_LMAC_TOP (WF_ARB) */
{0x820E4000, 0x021000, 0x00400}, /* WF_LMAC_TOP (WF_TMAC) */
{0x820E5000, 0x021400, 0x00800}, /* WF_LMAC_TOP (WF_RMAC) */
{0x820CE000, 0x021C00, 0x00200}, /* WF_LMAC_TOP (WF_SEC) */
{0x820E7000, 0x021E00, 0x00200}, /* WF_LMAC_TOP (WF_DMA) */
{0x820CF000, 0x022000, 0x01000}, /* WF_LMAC_TOP (WF_PF) */
{0x820E9000, 0x023400, 0x00200}, /* WF_LMAC_TOP (WF_WTBLOFF) */
{0x820EA000, 0x024000, 0x00200}, /* WF_LMAC_TOP (WF_ETBF) */
{0x820EB000, 0x024200, 0x00400}, /* WF_LMAC_TOP (WF_LPON) */
{0x820EC000, 0x024600, 0x00200}, /* WF_LMAC_TOP (WF_INT) */
{0x820ED000, 0x024800, 0x00800}, /* WF_LMAC_TOP (WF_MIB) */
{0x820CA000, 0x026000, 0x02000}, /* WF_LMAC_TOP (WF_MUCOP) */
{0x7C500000, 0x060000, 0x200000}, /* remap */
{0x7C000000, 0x0F0000, 0x10000}, /* CONN_INFRA (off2on) */
{0x7C060000, 0x0E0000, 0x10000}, /* remap MT_CONN_ON_LPCTL and MT_CONN_ON_MISC */
{0x20060000, 0x0E0000, 0x10000}, /* CONN_INFRA conn_host_csr_top */
{0x7C010000, 0x100000, 0x10000}, /* CONN_INFRA (gpio clkgen cfg) */
{0x7C050000, 0x1A0000, 0x10000}, /* CONN_INFRA SYSRAM */
{0x7C080000, 0x190000, 0x10000}, /* CONN_INFRA (coex, pta) */
{0x7C070000, 0x180000, 0x10000}, /* CONN_INFRA Semaphore */
{0x7C040000, 0x170000, 0x10000}, /* CONN_INFRA (bus, afe) */
{0x7C026000, 0x0D6000, 0x0019C}, /* remap DMASHL TOP */
{0x20020000, 0x0D0000, 0x0C000}, /* CONN_INFRA wf_dma_host_side_cr */
{0x200B0000, 0x050000, 0x10000}, /* CONN_INFRA conn_von_sysram */
{0x20090000, 0x150000, 0x08000}, /* CONN_INFRA von_connsys_s0-s7 */
{0x7C098000, 0x158000, 0x08000}, /* CONN_INFRA von_connsys_hclk_s0-s7 */
{0x20030000, 0x160000, 0x10000}, /* CONN_INFRA CCIF */
{0x70000000, 0x1E0000, 0x10000}, /* CONN_INFRA CONN2AP */
{0x830C0000, 0x000000, 0x01000}, /* WF_MCU_BUS_CR_REMAP */
{0x81020000, 0x0C0000, 0x10000}, /* WF_TOP_MISC_ON */
{0x80020000, 0x0B0000, 0x10000}, /* WF_TOP_MISC_OFF */
{0x81040000, 0x120000, 0x01000}, /* WF_MCU_CFG_ON */
{0x00400000, 0x080000, 0x10000}, /* WF_MCU_SYSRAM */
{0x00410000, 0x090000, 0x10000}, /* WF_MCU_SYSRAM (Common driver) */
{0x88000000, 0x140000, 0x10000}, /* WF_MCU_CFG_LS */
{0x80010000, 0x124000, 0x01000}, /* WF_AXIDMA */
{0x81050000, 0x121000, 0x01000}, /* WF_MCU_EINT */
{0x81060000, 0x122000, 0x01000}, /* WF_MCU_GPT */
{0x81070000, 0x123000, 0x01000}, /* WF_MCU_WDT */
{0x830A0000, 0x040000, 0x10000}, /* WF_PHY_MAP0 */
{0x83090000, 0x060000, 0x10000}, /* WF_PHY_MAP2 */
{0x83000000, 0x110000, 0x10000}, /* WF_PHY_MAP3 */
{0x83010000, 0x130000, 0x10000}, /* WF_PHY_MAP4 */
{0x81030000, 0x0AE000, 0x00100}, /* WFSYS_AON */
{0x81031000, 0x0AE100, 0x00100}, /* WFSYS_AON */
{0x81032000, 0x0AE200, 0x00100}, /* WFSYS_AON */
{0x81033000, 0x0AE300, 0x00100}, /* WFSYS_AON */
{0x81034000, 0x0AE400, 0x00100}, /* WFSYS_AON */
{0xE0400000, 0x070000, 0x10000}, /* WF_UMCA_SYSRAM */
{0x70010000, 0x1C0000, 0x10000}, /* CB Infra1 */
{0x70020000, 0x1F0000, 0x10000}, /* Reserved for CBTOP, can't switch */
{0x74040000, 0x1D0000, 0x10000}, /* CB PCIe (cbtop remap) */
{0x18010000, 0x100000, 0x10000}, /* remap MT_HW_EMI_CTRL */
{0x00000000, 0x000000, 0x00000}, /* END */
};
const struct mt76_connac_reg_map *fixed_map;
size_t array_size;
u32 i;
if (addr < 0x200000)
return addr;
mt7925_reg_remap_restore(dev);
if (is_mt7928(&dev->mt76)) {
fixed_map = mt7928_fixed_map;
array_size = ARRAY_SIZE(mt7928_fixed_map);
} else {
fixed_map = default_fixed_map;
array_size = ARRAY_SIZE(default_fixed_map);
}
for (i = 0; i < array_size; i++) {
u32 ofs;
if (addr < fixed_map[i].phys)
continue;
ofs = addr - fixed_map[i].phys;
if (ofs > fixed_map[i].size)
continue;
return fixed_map[i].maps + ofs;
}
if ((addr >= 0x18000000 && addr < 0x18c00000) ||
(addr >= 0x70000000 && addr < 0x78000000) ||
(addr >= 0x7c000000 && addr < 0x7c400000))
return mt7925_reg_map_l1(dev, addr);
return mt7925_reg_map_l2(dev, addr);
}
static u32 mt7925_rr(struct mt76_dev *mdev, u32 offset)
{
struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
u32 addr = __mt7925_reg_addr(dev, offset);
return dev->bus_ops->rr(mdev, addr);
}
static void mt7925_wr(struct mt76_dev *mdev, u32 offset, u32 val)
{
struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
u32 addr = __mt7925_reg_addr(dev, offset);
dev->bus_ops->wr(mdev, addr, val);
}
static u32 mt7925_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
{
struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
u32 addr = __mt7925_reg_addr(dev, offset);
return dev->bus_ops->rmw(mdev, addr, mask, val);
}
static const struct mt792x_dma_layout mt7925_dma_layout = {
.tx_data0 = mt792x_dma_ring(MT7925_TXQ_BAND0,
MT7925_TX_RING_SIZE,
MT_TX_RING_BASE),
.tx_mcu = mt792x_dma_ring(MT7925_TXQ_MCU_WM,
MT7925_TX_MCU_RING_SIZE,
MT_TX_RING_BASE),
.tx_fwdl = mt792x_dma_ring(MT7925_TXQ_FWDL,
MT7925_TX_FWDL_RING_SIZE,
MT_TX_RING_BASE),
.rx_mcu = mt792x_dma_ring(MT7925_RXQ_MCU_WM,
MT7925_RX_MCU_RING_SIZE,
MT_RX_EVENT_RING_BASE),
.rx_data = mt792x_dma_ring(MT7925_RXQ_BAND0,
MT7925_RX_RING_SIZE,
MT_RX_DATA_RING_BASE),
};
static const struct mt792x_dma_layout mt7927_dma_layout = {
.tx_data0 = mt792x_dma_ring(MT7927_TXQ_BAND0,
MT7925_TX_RING_SIZE,
MT_TX_RING_BASE),
.tx_mcu = mt792x_dma_ring(MT7927_TXQ_MCU_WM,
MT7925_TX_MCU_RING_SIZE,
MT_TX_RING_BASE),
.tx_fwdl = mt792x_dma_ring(MT7927_TXQ_FWDL,
MT7925_TX_FWDL_RING_SIZE,
MT_TX_RING_BASE),
.rx_mcu = mt792x_dma_ring(MT7927_RXQ_MCU_WM,
MT7925_RX_MCU_RING_SIZE,
MT_RX_EVENT_RING_BASE),
.rx_data = mt792x_dma_ring(MT7927_RXQ_BAND0,
MT7925_RX_RING_SIZE,
MT_RX_DATA_RING_BASE),
};
static const struct mt792x_dma_layout mt7928_dma_layout = {
.tx_data0 = mt792x_dma_ring(MT7925_TXQ_BAND0,
MT7925_TX_RING_SIZE,
MT_TX_RING_BASE),
.tx_mcu = mt792x_dma_ring(MT7925_TXQ_MCU_WM,
MT7925_TX_MCU_RING_SIZE,
MT_TX_RING_BASE),
.tx_fwdl = mt792x_dma_ring(MT7925_TXQ_FWDL,
MT7925_TX_FWDL_RING_SIZE,
MT_TX_RING_BASE),
.tx_done = mt792x_dma_ring(MT7928_RXQ_MCU_WM2,
MT7928_RX_MCU_WA_RING_SIZE,
MT_RX_EVENT_RING_BASE),
.rx_mcu = mt792x_dma_ring(MT7928_RXQ_MCU_WM,
MT7925_RX_MCU_RING_SIZE,
MT_RX_EVENT_RING_BASE),
.rx_data = mt792x_dma_ring(MT7928_RXQ_BAND0,
MT7925_RX_RING_SIZE,
MT_RX_DATA_RING_BASE),
};
static int mt7927_dma_init(struct mt792x_dev *dev)
{
int ret;
ret = mt792x_dma_alloc_queues(dev, &mt7927_dma_layout);
if (ret)
return ret;
ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MCU_WA],
MT7927_RXQ_DATA2,
MT7925_RX_MCU_RING_SIZE,
MT_RX_BUF_SIZE,
MT_RX_DATA_RING_BASE);
if (ret)
return ret;
ret = mt76_init_queues(dev, mt792x_poll_rx);
if (ret < 0)
return ret;
netif_napi_add_tx(dev->mt76.tx_napi_dev, &dev->mt76.tx_napi,
mt792x_poll_tx);
napi_enable(&dev->mt76.tx_napi);
return mt792x_dma_enable(dev);
}
static void mt7928_dma_shdl_lite_init(struct mt792x_dev *dev)
{
u32 addr, idx, grp1_5_quota, grp15_quota;
u32 q2group[8] = {
0x04000000, /* AC00->G0,..., AC03->G4 */
0x04010101, /* AC10->G1,..., AC13->G4 */
0x04020202, /* AC20->G2,..., AC23->G4 */
0x04030303, /* AC30->G3,..., AC33->G4 */
0x00000005, /* ALTX->G5,BMC->G0,BCN->G0 */
0x00000005, /* TGID=1 ALTX->G5 */
0x00000000, /* NAF/NBCN/FIXFID -> G0 */
0x00000005, /* TGID=2 ALTX->G5 */
};
/* RST */
mt76_wr(dev, MT_DMASHDL_LITE_MAIN_CONTROL, MT_DMASHDL_LITE_MAIN_CONTROL_SW_RST);
/* pse page size 0x10, ple page size 0x7e0 */
mt76_wr(dev, MT_DMASHDL_LITE_PAGE_SIZE,
FIELD_PREP(MT_DMASHDL_LITE_PSE_PAGE_SIZE_MASK, 0x10) |
FIELD_PREP(MT_DMASHDL_LITE_PLE_PAGE_SIZE_MASK, 0x7e0));
/* pse max page 8, ple max page 1 */
mt76_wr(dev, MT_DMASHDL_LITE_PKT_MAX_SIZE,
FIELD_PREP(MT_DMASHDL_LITE_PSE_PKT_MAX_SIZE_MASK, 8) |
FIELD_PREP(MT_DMASHDL_LITE_PLE_PKT_MAX_SIZE_MASK, 1));
/* SN/UDF check */
mt76_wr(dev, MT_DMASHDL_LITE_GROUP_SN_CHK0, 0xffffffff);
mt76_wr(dev, MT_DMASHDL_LITE_GROUP_SN_CHK1, 0xffffffff);
mt76_wr(dev, MT_DMASHDL_LITE_GROUP_UDF_CHK0, 0xffffffff);
mt76_wr(dev, MT_DMASHDL_LITE_GROUP_UDF_CHK1, 0xffffffff);
/* q mapping */
for (addr = MT_DMASHDL_LITE_Q_MAPPING0, idx = 0;
idx < ARRAY_SIZE(q2group);
idx++, addr += 4)
mt76_wr(dev, addr, q2group[idx]);
/* refill, set 0 to enable group 0,1,2,3,4,5 & 15 */
mt76_wr(dev, MT_DMASHDL_LITE_GROUP_DISABLE0, 0xffff7fc0);
mt76_wr(dev, MT_DMASHDL_LITE_GROUP_DISABLE1, 0xffffffff);
/* max/min quota */
grp1_5_quota = FIELD_PREP(MT_DMASHDL_LITE_GROUP_MAX_QUOTA_MASK, 0x3f0) |
FIELD_PREP(MT_DMASHDL_LITE_GROUP_MIN_QUOTA_MASK, 0x10);
grp15_quota = FIELD_PREP(MT_DMASHDL_LITE_GROUP_MAX_QUOTA_MASK, 0x30);
for (addr = MT_DMASHDL_LITE_GROUP0_QUOTA, idx = 0;
idx < DMASHDL_LITE_GROUP_NUM;
idx++, addr += 4)
mt76_wr(dev, addr, (idx <= 5) ? grp1_5_quota :
((idx == 15) ? grp15_quota : 0));
}
static int mt7925_dma_init(struct mt792x_dev *dev)
{
int ret;
const struct mt792x_dma_layout *layout =
is_mt7928(&dev->mt76) ? &mt7928_dma_layout : &mt7925_dma_layout;
ret = mt792x_dma_alloc_queues(dev, layout);
if (ret)
return ret;
ret = mt76_init_queues(dev, mt792x_poll_rx);
if (ret < 0)
return ret;
if (is_mt7928(&dev->mt76))
mt7928_dma_shdl_lite_init(dev);
netif_napi_add_tx(dev->mt76.tx_napi_dev, &dev->mt76.tx_napi,
mt792x_poll_tx);
napi_enable(&dev->mt76.tx_napi);
return mt792x_dma_enable(dev);
}
static const struct mt792x_pcie_reg mt7925_pcie_reg = {
.imask = MT7925_PCIE_MAC_INT_ENABLE,
.pm = MT7925_PCIE_MAC_PM,
};
static const struct mt792x_pcie_reg mt7928_pcie_reg = {
.imask = MT7928_PCIE_MAC_INT_ENABLE,
.pm = MT7928_PCIE_MAC_PM,
};
static const struct mt792x_irq_map mt7925_irq_map = {
.host_irq_enable = MT_WFDMA0_HOST_INT_ENA,
.tx = {
.all_complete_mask = MT_INT_TX_DONE_ALL,
.mcu_complete_mask = MT_INT_TX_DONE_MCU,
},
.rx = {
.all_complete_mask = MT7925_INT_RX_DONE_ALL,
.data_complete_mask = MT7925_INT_RX_DONE_DATA,
.wm_complete_mask = MT7925_INT_RX_DONE_WM,
.wm2_complete_mask = MT_INT_RX_DONE_WM2,
},
};
static const struct mt792x_irq_map mt7927_irq_map = {
.host_irq_enable = MT_WFDMA0_HOST_INT_ENA,
.tx = {
.all_complete_mask = MT_INT_TX_DONE_ALL,
.mcu_complete_mask = MT_INT_TX_DONE_MCU,
},
.rx = {
.all_complete_mask = MT7927_INT_RX_DONE_ALL,
.data_complete_mask = MT7927_INT_RX_DONE_DATA,
.wm_complete_mask = MT7927_INT_RX_DONE_WM,
.wm2_complete_mask = MT7927_INT_RX_DONE_WM2,
},
};
static const struct mt792x_irq_map mt7928_irq_map = {
.host_irq_enable = MT_WFDMA0_HOST_INT_ENA,
.tx = {
.all_complete_mask = MT_INT_TX_DONE_ALL,
.mcu_complete_mask = MT_INT_TX_DONE_MCU,
},
.rx = {
.all_complete_mask = MT7928_INT_RX_DONE_ALL,
.data_complete_mask = MT7928_INT_RX_DONE_DATA,
.wm_complete_mask = MT7928_INT_RX_DONE_WM,
.wm2_complete_mask = MT_INT_RX_DONE_WM2,
},
};
static int mt7925_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
static const struct mt76_driver_ops drv_ops = {
/* txwi_size = txd size + txp size */
.txwi_size = MT_TXD_SIZE + sizeof(struct mt76_connac_hw_txp),
.drv_flags = MT_DRV_TXWI_NO_FREE | MT_DRV_HW_MGMT_TXQ |
MT_DRV_AMSDU_OFFLOAD,
.survey_flags = SURVEY_INFO_TIME_TX |
SURVEY_INFO_TIME_RX |
SURVEY_INFO_TIME_BSS_RX,
.token_size = MT7925_TOKEN_SIZE,
.tx_prepare_skb = mt7925e_tx_prepare_skb,
.tx_complete_skb = mt76_connac_tx_complete_skb,
.rx_check = mt7925_rx_check,
.rx_skb = mt7925_queue_rx_skb,
.rx_poll_complete = mt792x_rx_poll_complete,
.sta_add = mt7925_mac_sta_add,
.sta_event = mt7925_mac_sta_event,
.sta_remove = mt7925_mac_sta_remove,
.update_survey = mt792x_update_channel,
};
static const struct mt792x_hif_ops mt7925_pcie_ops = {
.init_reset = mt7925e_init_reset,
.reset = mt7925e_mac_reset,
.mcu_init = mt7925e_mcu_init,
.drv_own = mt792xe_mcu_drv_pmctrl,
.fw_own = mt792xe_mcu_fw_pmctrl,
};
bool is_mt7927_hw, is_mt7928_hw;
struct mt76_bus_ops *bus_ops;
struct ieee80211_ops *ops;
struct mt792x_dev *dev;
struct mt76_dev *mdev;
u8 features;
int ret;
u16 cmd;
ret = pcim_enable_device(pdev);
if (ret)
return ret;
ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
if (ret)
return ret;
pci_read_config_word(pdev, PCI_COMMAND, &cmd);
if (!(cmd & PCI_COMMAND_MEMORY)) {
cmd |= PCI_COMMAND_MEMORY;
pci_write_config_word(pdev, PCI_COMMAND, cmd);
}
pci_set_master(pdev);
ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
if (ret < 0)
return ret;
is_mt7927_hw = (pdev->device == 0x6639 || pdev->device == 0x7927 ||
pdev->device == 0x0738);
is_mt7928_hw = (pdev->device == 0x7928 || pdev->device == 0x7935);
if (is_mt7928_hw)
ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(34));
else
ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret)
goto err_free_pci_vec;
/* MT7927: ASPM L1 causes unreliable WFDMA register access */
if (mt7925_disable_aspm || is_mt7927_hw)
mt76_pci_disable_aspm(pdev);
ops = mt792x_get_mac80211_ops(&pdev->dev, &mt7925_ops,
(void *)id->driver_data, &features);
if (!ops) {
ret = -ENOMEM;
goto err_free_pci_vec;
}
mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), ops, &drv_ops);
if (!mdev) {
ret = -ENOMEM;
goto err_free_pci_vec;
}
pci_set_drvdata(pdev, mdev);
dev = container_of(mdev, struct mt792x_dev, mt76);
dev->fw_features = features;
dev->hif_ops = &mt7925_pcie_ops;
dev->pcie_reg = &mt7925_pcie_reg;
if (is_mt7928_hw) {
dev->pcie_reg = &mt7928_pcie_reg;
dev->irq_map = &mt7928_irq_map;
mdev->rev = 0x7928 << 16;
} else if (is_mt7927_hw) {
dev->irq_map = &mt7927_irq_map;
} else {
dev->irq_map = &mt7925_irq_map;
}
mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]);
tasklet_init(&mdev->irq_tasklet, mt792x_irq_tasklet, (unsigned long)dev);
dev->phy.dev = dev;
dev->phy.mt76 = &dev->mt76.phy;
dev->mt76.phy.priv = &dev->phy;
dev->bus_ops = dev->mt76.bus;
bus_ops = devm_kmemdup(dev->mt76.dev, dev->bus_ops, sizeof(*bus_ops),
GFP_KERNEL);
if (!bus_ops) {
ret = -ENOMEM;
goto err_free_dev;
}
bus_ops->rr = mt7925_rr;
bus_ops->wr = mt7925_wr;
bus_ops->rmw = mt7925_rmw;
dev->mt76.bus = bus_ops;
if (!mt7925_disable_aspm && mt76_pci_aspm_supported(pdev))
dev->aspm_supported = true;
ret = __mt792x_mcu_fw_pmctrl(dev);
if (ret)
goto err_free_dev;
ret = __mt792xe_mcu_drv_pmctrl(dev);
if (ret)
goto err_free_dev;
mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
(mt76_rr(dev, MT_HW_REV) & 0xff);
dev_info(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
if (is_mt7927_hw && mt76_chip(mdev) != 0x7927) {
dev_info(mdev->dev,
"MT7927 raw CHIPID=0x%04x, forcing chip=0x7927\n",
mt76_chip(mdev));
mdev->rev = (0x7927 << 16) | (mdev->rev & 0xff);
} else if (is_mt7928_hw && mt76_chip(mdev) != 0x7928) {
dev_info(mdev->dev,
"MT7928 raw CHIPID=0x%04x, forcing chip=0x7928\n",
mt76_chip(mdev));
mdev->rev = (0x7928 << 16) | (mdev->rev & 0xff);
}
mt76_rmw_field(dev, MT_HW_EMI_CTL, MT_HW_EMI_CTL_SLPPROT_EN, 1);
ret = mt792x_wfsys_reset(dev);
if (ret)
goto err_free_dev;
mt76_wr(dev, dev->irq_map->host_irq_enable, 0);
mt76_wr(dev, dev->pcie_reg->imask, 0xff);
ret = devm_request_irq(mdev->dev, pdev->irq, mt792x_irq_handler,
IRQF_SHARED, KBUILD_MODNAME, dev);
if (ret)
goto err_free_dev;
if (is_mt7927(&dev->mt76))
ret = mt7927_dma_init(dev);
else if (is_mt7925(&dev->mt76) || is_mt7928(&dev->mt76))
ret = mt7925_dma_init(dev);
else
ret = -EINVAL;
if (ret)
goto err_free_irq;
ret = mt7925_register_device(dev);
if (ret)
goto err_free_dma;
return 0;
err_free_dma:
mt792x_dma_cleanup(dev);
err_free_irq:
devm_free_irq(&pdev->dev, pdev->irq, dev);
err_free_dev:
mt76_free_device(&dev->mt76);
err_free_pci_vec:
pci_free_irq_vectors(pdev);
return ret;
}
static void mt7925_pci_remove(struct pci_dev *pdev)
{
struct mt76_dev *mdev = pci_get_drvdata(pdev);
struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
set_bit(MT76_REMOVED, &mdev->phy.state);
mt7925e_unregister_device(dev);
devm_free_irq(&pdev->dev, pdev->irq, dev);
mt76_free_device(&dev->mt76);
pci_free_irq_vectors(pdev);
}
static int mt7925_pci_suspend(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
struct mt76_dev *mdev = pci_get_drvdata(pdev);
struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
struct mt76_connac_pm *pm = &dev->pm;
int i, err, ret;
pm->suspended = true;
dev->hif_resumed = false;
flush_work(&dev->reset_work);
cancel_delayed_work_sync(&pm->ps_work);
cancel_delayed_work_sync(&dev->mlo_pm_work);
cancel_work_sync(&pm->wake_work);
mt7925_roc_abort_sync(dev);
err = mt792x_mcu_drv_pmctrl(dev);
if (err < 0)
goto restore_suspend;
wait_event_timeout(dev->wait,
!dev->regd_in_progress, 5 * HZ);
/* always enable deep sleep during suspend to reduce
* power consumption
*/
mt7925_mcu_set_deep_sleep(dev, true);
mt76_connac_mcu_set_hif_suspend(mdev, true, false);
ret = wait_event_timeout(dev->wait,
dev->hif_idle, 3 * HZ);
if (!ret) {
err = -ETIMEDOUT;
goto restore_suspend;
}
napi_disable(&mdev->tx_napi);
mt76_worker_disable(&mdev->tx_worker);
mt76_for_each_q_rx(mdev, i) {
napi_disable(&mdev->napi[i]);
}
/* wait until dma is idle */
mt76_poll(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_BUSY |
MT_WFDMA0_GLO_CFG_RX_DMA_BUSY, 0, 1000);
/* put dma disabled */
mt76_clear(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
/* disable interrupt */
mt76_wr(dev, dev->irq_map->host_irq_enable, 0);
mt76_wr(dev, dev->pcie_reg->imask, 0x0);
synchronize_irq(pdev->irq);
tasklet_kill(&mdev->irq_tasklet);
err = mt792x_mcu_fw_pmctrl(dev);
if (err)
goto restore_napi;
return 0;
restore_napi:
mt76_for_each_q_rx(mdev, i) {
napi_enable(&mdev->napi[i]);
}
napi_enable(&mdev->tx_napi);
if (!pm->ds_enable)
mt7925_mcu_set_deep_sleep(dev, false);
mt76_connac_mcu_set_hif_suspend(mdev, false, false);
ret = wait_event_timeout(dev->wait,
dev->hif_resumed, 3 * HZ);
if (!ret)
err = -ETIMEDOUT;
restore_suspend:
pm->suspended = false;
if (err < 0)
mt792x_reset(&dev->mt76);
return err;
}
static int _mt7925_pci_resume(struct device *device, bool restore)
{
struct pci_dev *pdev = to_pci_dev(device);
struct mt76_dev *mdev = pci_get_drvdata(pdev);
struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
struct mt76_connac_pm *pm = &dev->pm;
int i, err, ret;
dev->hif_idle = false;
err = mt792x_mcu_drv_pmctrl(dev);
if (err < 0)
goto failed;
mt792x_wpdma_reinit_cond(dev);
/* enable interrupt */
mt76_wr(dev, dev->pcie_reg->imask, 0xff);
mt76_connac_irq_enable(&dev->mt76,
dev->irq_map->tx.all_complete_mask |
dev->irq_map->rx.all_complete_mask |
MT_INT_MCU_CMD);
mt76_set(dev, MT_MCU2HOST_SW_INT_ENA, MT_MCU_CMD_WAKE_RX_PCIE);
/* put dma enabled */
mt76_set(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
mt76_worker_enable(&mdev->tx_worker);
mt76_for_each_q_rx(mdev, i) {
napi_enable(&mdev->napi[i]);
}
napi_enable(&mdev->tx_napi);
local_bh_disable();
mt76_for_each_q_rx(mdev, i) {
napi_schedule(&mdev->napi[i]);
}
napi_schedule(&mdev->tx_napi);
local_bh_enable();
if (restore)
goto failed;
mt76_connac_mcu_set_hif_suspend(mdev, false, false);
ret = wait_event_timeout(dev->wait,
dev->hif_resumed, 3 * HZ);
if (!ret) {
err = -ETIMEDOUT;
goto failed;
}
/* restore previous ds setting */
if (!pm->ds_enable)
mt7925_mcu_set_deep_sleep(dev, false);
mt7925_mcu_regd_update(dev, mdev->alpha2, dev->country_ie_env);
failed:
pm->suspended = false;
if (err < 0 || restore)
mt792x_reset(&dev->mt76);
return err;
}
static void mt7925_pci_shutdown(struct pci_dev *pdev)
{
mt7925_pci_remove(pdev);
}
static int mt7925_pci_resume(struct device *device)
{
return _mt7925_pci_resume(device, false);
}
static int mt7925_pci_restore(struct device *device)
{
return _mt7925_pci_resume(device, true);
}
static const struct dev_pm_ops mt7925_pm_ops = {
.suspend = pm_sleep_ptr(mt7925_pci_suspend),
.resume = pm_sleep_ptr(mt7925_pci_resume),
.freeze = pm_sleep_ptr(mt7925_pci_suspend),
.thaw = pm_sleep_ptr(mt7925_pci_resume),
.poweroff = pm_sleep_ptr(mt7925_pci_suspend),
.restore = pm_sleep_ptr(mt7925_pci_restore),
};
static struct pci_driver mt7925_pci_driver = {
.name = KBUILD_MODNAME,
.id_table = mt7925_pci_device_table,
.probe = mt7925_pci_probe,
.remove = mt7925_pci_remove,
.shutdown = mt7925_pci_shutdown,
.driver.pm = pm_sleep_ptr(&mt7925_pm_ops),
};
module_pci_driver(mt7925_pci_driver);
MODULE_DEVICE_TABLE(pci, mt7925_pci_device_table);
MODULE_FIRMWARE(MT7925_FIRMWARE_WM);
MODULE_FIRMWARE(MT7925_ROM_PATCH);
MODULE_FIRMWARE(MT7927_FIRMWARE_WM);
MODULE_FIRMWARE(MT7927_ROM_PATCH);
MODULE_FIRMWARE(MT7928_FIRMWARE_WM);
MODULE_FIRMWARE(MT7928_ROM_PATCH);
MODULE_FIRMWARE(MT7928_CB_ROM_PATCH);
MODULE_FIRMWARE(MT7928_PHY_RAM);
MODULE_AUTHOR("Deren Wu <[email protected]>");
MODULE_AUTHOR("Lorenzo Bianconi <[email protected]>");
MODULE_DESCRIPTION("MediaTek MT7925E (PCIe) wireless driver");
MODULE_LICENSE("Dual BSD/GPL");
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