linux-kernel - [PATCH AUTOSEL 6.6 11/40] drm/amdgpu: update retry times for psp vmbx wait

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Message-ID: <20231107121837.3759358-11-sashal@kernel.org>
Date:   Tue,  7 Nov 2023 07:16:13 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Tao Zhou <tao.zhou1@....com>,
        Hawking Zhang <Hawking.Zhang@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>, christian.koenig@....com,
        Xinhui.Pan@....com, airlied@...il.com, daniel@...ll.ch,
        lijo.lazar@....com, asad.kamal@....com, candice.li@....com,
        YiPeng.Chai@....com, mario.limonciello@....com,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.6 11/40] drm/amdgpu: update retry times for psp vmbx wait

From: Tao Zhou <tao.zhou1@....com>

[ Upstream commit fc598890715669ff794b253fdf387cd02b9396f8 ]

Increase the retry loops and replace the constant number with macro.

Signed-off-by: Tao Zhou <tao.zhou1@....com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/amdgpu/psp_v13_0.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
index 469eed084976c..52d80f286b3dd 100644
--- a/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
@@ -59,6 +59,9 @@ MODULE_FIRMWARE("amdgpu/psp_14_0_0_ta.bin");
 /* Read USB-PD from LFB */
 #define GFX_CMD_USB_PD_USE_LFB 0x480
 
+/* Retry times for vmbx ready wait */
+#define PSP_VMBX_POLLING_LIMIT 20000
+
 /* VBIOS gfl defines */
 #define MBOX_READY_MASK 0x80000000
 #define MBOX_STATUS_MASK 0x0000FFFF
@@ -138,7 +141,7 @@ static int psp_v13_0_wait_for_vmbx_ready(struct psp_context *psp)
 	struct amdgpu_device *adev = psp->adev;
 	int retry_loop, ret;
 
-	for (retry_loop = 0; retry_loop < 70; retry_loop++) {
+	for (retry_loop = 0; retry_loop < PSP_VMBX_POLLING_LIMIT; retry_loop++) {
 		/* Wait for bootloader to signify that is
 		   ready having bit 31 of C2PMSG_33 set to 1 */
 		ret = psp_wait_for(
-- 
2.42.0