From bd4f82e3b2899829c7f87dde0d20daeb780ad014 Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Wed, 30 Jul 2014 13:20:05 +0200 Subject: [PATCH] brcmfmac: Update pcie reset device routine. When a pcie device gets reset then the low power modes l1 and l2 should be temporarily disabled. Reviewed-by: Arend Van Spriel Reviewed-by: Franky (Zhenhui) Lin Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Daniel (Deognyoun) Kim Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- .../net/wireless/brcm80211/brcmfmac/pcie.c | 49 ++++++++++++++++--- 1 file changed, 42 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/brcm80211/brcmfmac/pcie.c index 89be96d3b6e9..bc972c0ba5f8 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/pcie.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/pcie.c @@ -168,6 +168,20 @@ enum brcmf_pcie_state { #define BRCMF_PCIE_MBDATA_TIMEOUT 2000 +#define BRCMF_PCIE_CFGREG_STATUS_CMD 0x4 +#define BRCMF_PCIE_CFGREG_PM_CSR 0x4C +#define BRCMF_PCIE_CFGREG_MSI_CAP 0x58 +#define BRCMF_PCIE_CFGREG_MSI_ADDR_L 0x5C +#define BRCMF_PCIE_CFGREG_MSI_ADDR_H 0x60 +#define BRCMF_PCIE_CFGREG_MSI_DATA 0x64 +#define BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL 0xBC +#define BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL2 0xDC +#define BRCMF_PCIE_CFGREG_RBAR_CTRL 0x228 +#define BRCMF_PCIE_CFGREG_PML1_SUB_CTRL1 0x248 +#define BRCMF_PCIE_CFGREG_REG_BAR2_CONFIG 0x4E0 +#define BRCMF_PCIE_CFGREG_REG_BAR3_CONFIG 0x4F4 +#define BRCMF_PCIE_LINK_STATUS_CTRL_ASPM_ENAB 3 + MODULE_FIRMWARE(BRCMF_PCIE_43602_FW_NAME); MODULE_FIRMWARE(BRCMF_PCIE_43602_NVRAM_NAME); @@ -423,21 +437,42 @@ brcmf_pcie_select_core(struct brcmf_pciedev_info *devinfo, u16 coreid) } -static void brcmf_pcie_detach(struct brcmf_pciedev_info *devinfo) +static void brcmf_pcie_reset_device(struct brcmf_pciedev_info *devinfo) { - u16 cfg_offset[] = { 0x4, 0x4C, 0x58, 0x5C, 0x60, 0x64, 0xDC, 0x228, - 0x248, 0x4e0, 0x4f4 }; + u16 cfg_offset[] = { BRCMF_PCIE_CFGREG_STATUS_CMD, + BRCMF_PCIE_CFGREG_PM_CSR, + BRCMF_PCIE_CFGREG_MSI_CAP, + BRCMF_PCIE_CFGREG_MSI_ADDR_L, + BRCMF_PCIE_CFGREG_MSI_ADDR_H, + BRCMF_PCIE_CFGREG_MSI_DATA, + BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL2, + BRCMF_PCIE_CFGREG_RBAR_CTRL, + BRCMF_PCIE_CFGREG_PML1_SUB_CTRL1, + BRCMF_PCIE_CFGREG_REG_BAR2_CONFIG, + BRCMF_PCIE_CFGREG_REG_BAR3_CONFIG }; u32 i; u32 val; + u32 lsc; if (!devinfo->ci) return; - brcmf_pcie_select_core(devinfo, BCMA_CORE_CHIPCOMMON); - WRITECC32(devinfo, watchdog, 0x4e0); + brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2); + brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR, + BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL); + lsc = brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA); + val = lsc & (~BRCMF_PCIE_LINK_STATUS_CTRL_ASPM_ENAB); + brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA, val); + brcmf_pcie_select_core(devinfo, BCMA_CORE_CHIPCOMMON); + WRITECC32(devinfo, watchdog, 4); msleep(100); + brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2); + brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR, + BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL); + brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA, lsc); + brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2); for (i = 0; i < ARRAY_SIZE(cfg_offset); i++) { brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR, @@ -458,7 +493,7 @@ static void brcmf_pcie_attach(struct brcmf_pciedev_info *devinfo) brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2); if (brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_INTMASK) != 0) - brcmf_pcie_detach(devinfo); + brcmf_pcie_reset_device(devinfo); /* BAR1 window may not be sized properly */ brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2); brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR, 0x4e0); @@ -1686,7 +1721,7 @@ brcmf_pcie_remove(struct pci_dev *pdev) brcmf_pcie_release_irq(devinfo); brcmf_pcie_release_scratchbuffers(devinfo); brcmf_pcie_release_ringbuffers(devinfo); - brcmf_pcie_detach(devinfo); + brcmf_pcie_reset_device(devinfo); brcmf_pcie_release_resource(devinfo); if (devinfo->ci) -- 2.20.1