diff options
Diffstat (limited to 'drivers/net/wireless/realtek/rtw89/pci.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/pci.c | 136 |
1 files changed, 125 insertions, 11 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c index 769f1ce62ebc..67d7294e488a 100644 --- a/drivers/net/wireless/realtek/rtw89/pci.c +++ b/drivers/net/wireless/realtek/rtw89/pci.c @@ -155,8 +155,8 @@ static void rtw89_pci_sync_skb_for_device(struct rtw89_dev *rtwdev, DMA_FROM_DEVICE); } -static int rtw89_pci_rxbd_info_update(struct rtw89_dev *rtwdev, - struct sk_buff *skb) +static void rtw89_pci_rxbd_info_update(struct rtw89_dev *rtwdev, + struct sk_buff *skb) { struct rtw89_pci_rxbd_info *rxbd_info; struct rtw89_pci_rx_info *rx_info = RTW89_PCI_RX_SKB_CB(skb); @@ -166,10 +166,58 @@ static int rtw89_pci_rxbd_info_update(struct rtw89_dev *rtwdev, rx_info->ls = le32_get_bits(rxbd_info->dword, RTW89_PCI_RXBD_LS); rx_info->len = le32_get_bits(rxbd_info->dword, RTW89_PCI_RXBD_WRITE_SIZE); rx_info->tag = le32_get_bits(rxbd_info->dword, RTW89_PCI_RXBD_TAG); +} + +static int rtw89_pci_validate_rx_tag(struct rtw89_dev *rtwdev, + struct rtw89_pci_rx_ring *rx_ring, + struct sk_buff *skb) +{ + struct rtw89_pci_rx_info *rx_info = RTW89_PCI_RX_SKB_CB(skb); + const struct rtw89_pci_info *info = rtwdev->pci_info; + u32 target_rx_tag; + + if (!info->check_rx_tag) + return 0; + + /* valid range is 1 ~ 0x1FFF */ + if (rx_ring->target_rx_tag == 0) + target_rx_tag = 1; + else + target_rx_tag = rx_ring->target_rx_tag; + + if (rx_info->tag != target_rx_tag) { + rtw89_debug(rtwdev, RTW89_DBG_UNEXP, "mismatch RX tag 0x%x 0x%x\n", + rx_info->tag, target_rx_tag); + return -EAGAIN; + } return 0; } +static +int rtw89_pci_sync_skb_for_device_and_validate_rx_info(struct rtw89_dev *rtwdev, + struct rtw89_pci_rx_ring *rx_ring, + struct sk_buff *skb) +{ + struct rtw89_pci_rx_info *rx_info = RTW89_PCI_RX_SKB_CB(skb); + int rx_tag_retry = 100; + int ret; + + do { + rtw89_pci_sync_skb_for_cpu(rtwdev, skb); + rtw89_pci_rxbd_info_update(rtwdev, skb); + + ret = rtw89_pci_validate_rx_tag(rtwdev, rx_ring, skb); + if (ret != -EAGAIN) + break; + } while (rx_tag_retry--); + + /* update target rx_tag for next RX */ + rx_ring->target_rx_tag = rx_info->tag + 1; + + return ret; +} + static void rtw89_pci_ctrl_txdma_ch_pcie(struct rtw89_dev *rtwdev, bool enable) { const struct rtw89_pci_info *info = rtwdev->pci_info; @@ -259,9 +307,8 @@ static u32 rtw89_pci_rxbd_deliver_skbs(struct rtw89_dev *rtwdev, skb_idx = rtw89_pci_get_rx_skb_idx(rtwdev, bd_ring); skb = rx_ring->buf[skb_idx]; - rtw89_pci_sync_skb_for_cpu(rtwdev, skb); - ret = rtw89_pci_rxbd_info_update(rtwdev, skb); + ret = rtw89_pci_sync_skb_for_device_and_validate_rx_info(rtwdev, rx_ring, skb); if (ret) { rtw89_err(rtwdev, "failed to update %d RXBD info: %d\n", bd_ring->wp, ret); @@ -549,9 +596,8 @@ static u32 rtw89_pci_release_tx_skbs(struct rtw89_dev *rtwdev, skb_idx = rtw89_pci_get_rx_skb_idx(rtwdev, bd_ring); skb = rx_ring->buf[skb_idx]; - rtw89_pci_sync_skb_for_cpu(rtwdev, skb); - ret = rtw89_pci_rxbd_info_update(rtwdev, skb); + ret = rtw89_pci_sync_skb_for_device_and_validate_rx_info(rtwdev, rx_ring, skb); if (ret) { rtw89_err(rtwdev, "failed to update %d RXBD info: %d\n", bd_ring->wp, ret); @@ -705,7 +751,7 @@ void rtw89_pci_recognize_intrs_v2(struct rtw89_dev *rtwdev, rtw89_read32(rtwdev, R_BE_HISR0) & rtwpci->halt_c2h_intrs : 0; isrs->isrs[0] = isrs->ind_isrs & B_BE_HCI_AXIDMA_INT ? rtw89_read32(rtwdev, R_BE_HAXI_HISR00) & rtwpci->intrs[0] : 0; - isrs->isrs[1] = rtw89_read32(rtwdev, R_BE_PCIE_DMA_ISR); + isrs->isrs[1] = rtw89_read32(rtwdev, R_BE_PCIE_DMA_ISR) & rtwpci->intrs[1]; if (isrs->halt_c2h_isrs) rtw89_write32(rtwdev, R_BE_HISR0, isrs->halt_c2h_isrs); @@ -1550,6 +1596,7 @@ static void rtw89_pci_reset_trx_rings(struct rtw89_dev *rtwdev) bd_ring->rp = 0; rx_ring->diliver_skb = NULL; rx_ring->diliver_desc.ready = false; + rx_ring->target_rx_tag = 0; rtw89_write16(rtwdev, addr_num, bd_ring->len); rtw89_write32(rtwdev, addr_desa_l, bd_ring->dma); @@ -1907,22 +1954,87 @@ static int rtw89_write16_mdio_clr(struct rtw89_dev *rtwdev, u8 addr, u16 mask, u return 0; } +static int rtw89_dbi_write8(struct rtw89_dev *rtwdev, u16 addr, u8 data) +{ + u16 addr_2lsb = addr & B_AX_DBI_2LSB; + u16 write_addr; + u8 flag; + int ret; + + write_addr = addr & B_AX_DBI_ADDR_MSK; + write_addr |= u16_encode_bits(BIT(addr_2lsb), B_AX_DBI_WREN_MSK); + rtw89_write8(rtwdev, R_AX_DBI_WDATA + addr_2lsb, data); + rtw89_write16(rtwdev, R_AX_DBI_FLAG, write_addr); + rtw89_write8(rtwdev, R_AX_DBI_FLAG + 2, B_AX_DBI_WFLAG >> 16); + + ret = read_poll_timeout_atomic(rtw89_read8, flag, !flag, 10, + 10 * RTW89_PCI_WR_RETRY_CNT, false, + rtwdev, R_AX_DBI_FLAG + 2); + if (ret) + rtw89_err(rtwdev, "failed to write DBI register, addr=0x%X\n", + addr); + + return ret; +} + +static int rtw89_dbi_read8(struct rtw89_dev *rtwdev, u16 addr, u8 *value) +{ + u16 read_addr = addr & B_AX_DBI_ADDR_MSK; + u8 flag; + int ret; + + rtw89_write16(rtwdev, R_AX_DBI_FLAG, read_addr); + rtw89_write8(rtwdev, R_AX_DBI_FLAG + 2, B_AX_DBI_RFLAG >> 16); + + ret = read_poll_timeout_atomic(rtw89_read8, flag, !flag, 10, + 10 * RTW89_PCI_WR_RETRY_CNT, false, + rtwdev, R_AX_DBI_FLAG + 2); + if (ret) { + rtw89_err(rtwdev, "failed to read DBI register, addr=0x%X\n", + addr); + return ret; + } + + read_addr = R_AX_DBI_RDATA + (addr & 3); + *value = rtw89_read8(rtwdev, read_addr); + + return 0; +} + static int rtw89_pci_write_config_byte(struct rtw89_dev *rtwdev, u16 addr, u8 data) { struct rtw89_pci *rtwpci = (struct rtw89_pci *)rtwdev->priv; + enum rtw89_core_chip_id chip_id = rtwdev->chip->chip_id; struct pci_dev *pdev = rtwpci->pdev; + int ret; + + ret = pci_write_config_byte(pdev, addr, data); + if (!ret) + return 0; + + if (chip_id == RTL8852A || chip_id == RTL8852B || chip_id == RTL8851B) + ret = rtw89_dbi_write8(rtwdev, addr, data); - return pci_write_config_byte(pdev, addr, data); + return ret; } static int rtw89_pci_read_config_byte(struct rtw89_dev *rtwdev, u16 addr, u8 *value) { struct rtw89_pci *rtwpci = (struct rtw89_pci *)rtwdev->priv; + enum rtw89_core_chip_id chip_id = rtwdev->chip->chip_id; struct pci_dev *pdev = rtwpci->pdev; + int ret; - return pci_read_config_byte(pdev, addr, value); + ret = pci_read_config_byte(pdev, addr, value); + if (!ret) + return 0; + + if (chip_id == RTL8852A || chip_id == RTL8852B || chip_id == RTL8851B) + ret = rtw89_dbi_read8(rtwdev, addr, value); + + return ret; } static int rtw89_pci_config_byte_set(struct rtw89_dev *rtwdev, u16 addr, @@ -3148,6 +3260,7 @@ static int rtw89_pci_alloc_rx_ring(struct rtw89_dev *rtwdev, rx_ring->buf_sz = buf_sz; rx_ring->diliver_skb = NULL; rx_ring->diliver_desc.ready = false; + rx_ring->target_rx_tag = 0; for (i = 0; i < len; i++) { skb = dev_alloc_skb(buf_sz); @@ -3387,8 +3500,7 @@ static void rtw89_pci_recovery_intr_mask_v2(struct rtw89_dev *rtwdev) rtwpci->ind_intrs = B_BE_HS0_IND_INT_EN0; rtwpci->halt_c2h_intrs = B_BE_HALT_C2H_INT_EN | B_BE_WDT_TIMEOUT_INT_EN; rtwpci->intrs[0] = 0; - rtwpci->intrs[1] = B_BE_PCIE_RX_RX0P2_IMR0_V1 | - B_BE_PCIE_RX_RPQ0_IMR0_V1; + rtwpci->intrs[1] = 0; } static void rtw89_pci_default_intr_mask_v2(struct rtw89_dev *rtwdev) @@ -4068,6 +4180,8 @@ int rtw89_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto err_free_irq; } + set_bit(RTW89_FLAG_PROBE_DONE, rtwdev->flags); + return 0; err_free_irq: |