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brcmfmac: send mailbox interrupt twice for specific hardware device 

For PCIE wireless device with core revision less than 14, device may miss
PCIE to System Backplane Interrupt via PCIEtoSBMailbox. So add sending
mail box interrupt twice as a hardware workaround.

Signed-off-by: Wright Feng <wright.feng@cypress.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Wright Feng 2019-04-26 03:12:32 +00:00 committed by Kalle Valo
parent a0656c6ec2
commit 9ef77fbeda
1 changed files with 6 additions and 1 deletions
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7
drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
View File

@ -675,6 +675,7 @@ static int
brcmf_pcie_send_mb_data(struct brcmf_pciedev_info *devinfo, u32 htod_mb_data)
{
struct brcmf_pcie_shared_info *shared;
struct brcmf_core *core;
u32 addr;
u32 cur_htod_mb_data;
u32 i;
@ -698,7 +699,11 @@ brcmf_pcie_send_mb_data(struct brcmf_pciedev_info *devinfo, u32 htod_mb_data)
brcmf_pcie_write_tcm32(devinfo, addr, htod_mb_data);
pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
/* Send mailbox interrupt twice as a hardware workaround */
core = brcmf_chip_get_core(devinfo->ci, BCMA_CORE_PCIE2);
if (core->rev <= 13)
pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
return 0;
}