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74 lines
2.5 KiB
Diff
74 lines
2.5 KiB
Diff
From e1a08730eeb0bad4d82c3bc40e74854872de618d Mon Sep 17 00:00:00 2001
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From: Wright Feng <wright.feng@cypress.com>
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Date: Wed, 21 Nov 2018 07:53:44 +0000
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Subject: [PATCH] brcmfmac: set F2 watermark to 256 for 4373
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We got SDIO_CRC_ERROR with 4373 on SDR104 when doing bi-directional
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throughput test. Enable watermark to 256 to guarantee the operation
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stability.
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Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
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Signed-off-by: Wright Feng <wright.feng@cypress.com>
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Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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.../broadcom/brcm80211/brcmfmac/sdio.c | 26 +++++++++++++++++--
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1 file changed, 24 insertions(+), 2 deletions(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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@@ -49,6 +49,10 @@
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#define DCMD_RESP_TIMEOUT msecs_to_jiffies(2500)
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#define CTL_DONE_TIMEOUT msecs_to_jiffies(2500)
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+/* watermark expressed in number of words */
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+#define DEFAULT_F2_WATERMARK 0x8
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+#define CY_4373_F2_WATERMARK 0x40
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+
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#ifdef DEBUG
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#define BRCMF_TRAP_INFO_SIZE 80
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@@ -138,6 +142,8 @@ struct rte_console {
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/* 1: isolate internal sdio signals, put external pads in tri-state; requires
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* sdio bus power cycle to clear (rev 9) */
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#define SBSDIO_DEVCTL_PADS_ISO 0x08
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+/* 1: enable F2 Watermark */
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+#define SBSDIO_DEVCTL_F2WM_ENAB 0x10
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/* Force SD->SB reset mapping (rev 11) */
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#define SBSDIO_DEVCTL_SB_RST_CTL 0x30
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/* Determined by CoreControl bit */
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@@ -4046,6 +4052,7 @@ static void brcmf_sdio_firmware_callback
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void *nvram;
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u32 nvram_len;
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u8 saveclk;
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+ u8 devctl;
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brcmf_dbg(TRACE, "Enter: dev=%s, err=%d\n", dev_name(dev), err);
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@@ -4101,8 +4108,23 @@ static void brcmf_sdio_firmware_callback
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brcmf_sdiod_writel(sdiod, core->base + SD_REG(hostintmask),
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bus->hostintmask, NULL);
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-
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- brcmf_sdiod_writeb(sdiod, SBSDIO_WATERMARK, 8, &err);
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+ switch (sdiod->func1->device) {
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+ case SDIO_DEVICE_ID_CYPRESS_4373:
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+ brcmf_dbg(INFO, "set F2 watermark to 0x%x*4 bytes\n",
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+ CY_4373_F2_WATERMARK);
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+ brcmf_sdiod_writeb(sdiod, SBSDIO_WATERMARK,
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+ CY_4373_F2_WATERMARK, &err);
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+ devctl = brcmf_sdiod_readb(sdiod, SBSDIO_DEVICE_CTL,
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+ &err);
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+ devctl |= SBSDIO_DEVCTL_F2WM_ENAB;
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+ brcmf_sdiod_writeb(sdiod, SBSDIO_DEVICE_CTL, devctl,
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+ &err);
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+ break;
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+ default:
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+ brcmf_sdiod_writeb(sdiod, SBSDIO_WATERMARK,
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+ DEFAULT_F2_WATERMARK, &err);
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+ break;
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+ }
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} else {
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/* Disable F2 again */
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sdio_disable_func(sdiod->func2);
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