[PATCH 3/4] drm/msm: register the base address with dpu_dbg module

Abhinav Kumar
2020-10-22T05:03:28Z

Register the base address of various dpu sub-modules with the
dpu_dbg module so that it can be dumped out during error scenarios.

Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.c | 4 +--
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 6 ++++-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c | 7 +++--
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 5 +++-
.../gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c | 6 ++++-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c | 8 +++++-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c | 7 ++++-
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 12 +++++++--
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 4 ++-
drivers/gpu/drm/msm/dp/dp_catalog.c | 12 +++++++++
drivers/gpu/drm/msm/dp/dp_catalog.h | 4 +++
drivers/gpu/drm/msm/dp/dp_display.c | 2 ++
drivers/gpu/drm/msm/dsi/dsi_host.c | 10 ++++++-
drivers/gpu/drm/msm/msm_drv.c | 26 ++++++++++++++++++-
drivers/gpu/drm/msm/msm_drv.h | 3 ++-
15 files changed, 101 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.c
index 6703e1555194..62f49e60a4ca 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_dbg.c
@@ -263,7 +263,7 @@ int dpu_dbg_reg_register_base(const char *name, void __iomem *base,
/* Initialize list to make sure check for null list will be valid */
INIT_LIST_HEAD(&reg_base->sub_range_list);

- pr_debug("%s base: %pK max_offset 0x%zX\n", reg_base->name,
+ pr_info("%s base: %pK max_offset 0x%zX\n", reg_base->name,
reg_base->base, reg_base->max_offset);

list_add(&reg_base->reg_base_head, &dbg_base->reg_base_list);
@@ -310,7 +310,7 @@ void dpu_dbg_reg_register_dump_range(const char *base_name,
range->xin_id = xin_id;
list_add_tail(&range->head, &reg_base->sub_range_list);

- pr_debug("base %s, range %s, start 0x%X, end 0x%X\n",
+ pr_info("base_name %s, range_name %s, start 0x%X, end 0x%X\n",
base_name, range->range_name,
range->offset.start, range->offset.end);
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
index 758c355b4fd8..3a827ea96723 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015-2018, 2020 The Linux Foundation. All rights reserved.
*/

#include <linux/delay.h>
@@ -7,6 +7,7 @@
#include "dpu_hw_ctl.h"
#include "dpu_kms.h"
#include "dpu_trace.h"
+#include "dpu_dbg.h"

#define CTL_LAYER(lm) \
(((lm) == LM_5) ? (0x024) : (((lm) - LM_0) * 0x004))
@@ -588,6 +589,9 @@ struct dpu_hw_ctl *dpu_hw_ctl_init(enum dpu_ctl idx,

dpu_hw_blk_init(&c->base, DPU_HW_BLK_CTL, idx, &dpu_hw_ops);

+ dpu_dbg_reg_register_dump_range(DPU_DBG_NAME, cfg->name, c->hw.blk_off,
+ c->hw.blk_off + c->hw.length, c->hw.xin_id);
+
return c;
}

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
index a7a24539921f..ee9ae02f5e7f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015-2018, 2020 The Linux Foundation. All rights reserved.
*/

#include "dpu_hwio.h"
@@ -7,7 +7,7 @@
#include "dpu_hw_lm.h"
#include "dpu_hw_dspp.h"
#include "dpu_kms.h"
-
+#include "dpu_dbg.h"

/* DSPP_PCC */
#define PCC_EN BIT(0)
@@ -115,6 +115,9 @@ struct dpu_hw_dspp *dpu_hw_dspp_init(enum dpu_dspp idx,

dpu_hw_blk_init(&c->base, DPU_HW_BLK_DSPP, idx, &dpu_hw_ops);

+ dpu_dbg_reg_register_dump_range(DPU_DBG_NAME, cfg->name, c->hw.blk_off,
+ c->hw.blk_off + c->hw.length, c->hw.xin_id);
+
return c;
}

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
index 6f0f54588124..d8198d4d42bc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
@@ -1,11 +1,12 @@
// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.
*/

#include "dpu_hwio.h"
#include "dpu_hw_catalog.h"
#include "dpu_hw_intf.h"
#include "dpu_kms.h"
+#include "dpu_dbg.h"

#define INTF_TIMING_ENGINE_EN 0x000
#define INTF_CONFIG 0x004
@@ -319,6 +320,8 @@ struct dpu_hw_intf *dpu_hw_intf_init(enum dpu_intf idx,

dpu_hw_blk_init(&c->base, DPU_HW_BLK_INTF, idx, &dpu_hw_ops);

+ dpu_dbg_reg_register_dump_range(DPU_DBG_NAME, cfg->name, c->hw.blk_off,
+ c->hw.blk_off + c->hw.length, c->hw.xin_id);
return c;
}

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
index bea4ab5c58c5..0dc6d161e890 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015-2018, 2020 The Linux Foundation. All rights reserved.
*/

#include <linux/iopoll.h>
@@ -10,6 +10,7 @@
#include "dpu_hw_pingpong.h"
#include "dpu_kms.h"
#include "dpu_trace.h"
+#include "dpu_dbg.h"

#define PP_TEAR_CHECK_EN 0x000
#define PP_SYNC_CONFIG_VSYNC 0x004
@@ -260,6 +261,9 @@ struct dpu_hw_pingpong *dpu_hw_pingpong_init(enum dpu_pingpong idx,

dpu_hw_blk_init(&c->base, DPU_HW_BLK_PINGPONG, idx, &dpu_hw_ops);

+ dpu_dbg_reg_register_dump_range(DPU_DBG_NAME, cfg->name, c->hw.blk_off,
+ c->hw.blk_off + c->hw.length, c->hw.xin_id);
+
return c;
}

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
index c940b69435e1..873fc828538d 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015-2018, 2020 The Linux Foundation. All rights reserved.
*/

#include "dpu_hwio.h"
@@ -7,6 +7,7 @@
#include "dpu_hw_lm.h"
#include "dpu_hw_sspp.h"
#include "dpu_kms.h"
+#include "dpu_dbg.h"

#define DPU_FETCH_CONFIG_RESET_VALUE 0x00000087

@@ -736,6 +737,11 @@ struct dpu_hw_pipe *dpu_hw_sspp_init(enum dpu_sspp idx,

dpu_hw_blk_init(&hw_pipe->base, DPU_HW_BLK_SSPP, idx, &dpu_hw_ops);

+ dpu_dbg_reg_register_dump_range(DPU_DBG_NAME, cfg->name,
+ hw_pipe->hw.blk_off,
+ hw_pipe->hw.blk_off + hw_pipe->hw.length,
+ hw_pipe->hw.xin_id);
+
return hw_pipe;
}

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
index 01b76766a9a8..f042471815cc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
@@ -1,11 +1,12 @@
// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015-2018, 2020 The Linux Foundation. All rights reserved.
*/

#include "dpu_hwio.h"
#include "dpu_hw_catalog.h"
#include "dpu_hw_top.h"
#include "dpu_kms.h"
+#include "dpu_dbg.h"

#define SSPP_SPARE 0x28

@@ -326,6 +327,10 @@ struct dpu_hw_mdp *dpu_hw_mdptop_init(enum dpu_mdp idx,

dpu_hw_blk_init(&mdp->base, DPU_HW_BLK_TOP, idx, &dpu_hw_ops);

+ dpu_dbg_reg_register_dump_range(DPU_DBG_NAME, cfg->name,
+ mdp->hw.blk_off, mdp->hw.blk_off + mdp->hw.length,
+ mdp->hw.xin_id);
+
return mdp;
}

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index d93c44f6996d..dc64e032d82f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2018, 2020 The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*/
@@ -27,6 +27,7 @@
#include "dpu_encoder.h"
#include "dpu_plane.h"
#include "dpu_crtc.h"
+#include "dpu_dbg.h"

#define CREATE_TRACE_POINTS
#include "dpu_trace.h"
@@ -908,7 +909,14 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
dpu_kms->mmio = NULL;
goto error;
}
- DRM_DEBUG("mapped dpu address space @%pK\n", dpu_kms->mmio);
+
+ dpu_kms->mmio_len = msm_iomap_size(dpu_kms->pdev, "mdp");
+
+ DRM_DEBUG("mapped dpu address space @%pK len = 0x%lx\n",
+ dpu_kms->mmio, dpu_kms->mmio_len);
+
+ dpu_dbg_reg_register_base(DPU_DBG_NAME,
+ dpu_kms->mmio, dpu_kms->mmio_len);

dpu_kms->vbif[VBIF_RT] = msm_ioremap(dpu_kms->pdev, "vbif", "vbif");
if (IS_ERR(dpu_kms->vbif[VBIF_RT])) {
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
index 1c0e4c0c9ffb..a478b40868dd 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
- * Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2015-2018, 2020 The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*/
@@ -103,6 +103,8 @@ struct dpu_kms {
/* io/register spaces: */
void __iomem *mmio, *vbif[VBIF_MAX], *reg_dma;

+ unsigned long mmio_len;
+
struct regulator *vdd;
struct regulator *mmagic;
struct regulator *venus;
diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c
index b15b4ce4ba35..efde98a3d9ab 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.c
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
@@ -63,6 +63,18 @@ struct dp_catalog_private {
u8 aux_lut_cfg_index[PHY_AUX_CFG_MAX];
};

+void dp_catalog_register_dbg_base(struct dp_catalog *dp_catalog)
+{
+ char dbg_name[32];
+ struct dp_catalog_private *catalog = container_of(dp_catalog,
+ struct dp_catalog_private, dp_catalog);
+
+ snprintf(dbg_name, 32, "dp_ctrl");
+
+ dpu_dbg_reg_register_base(dbg_name, catalog->io->dp_controller.base,
+ catalog->io->dp_controller.len);
+}
+
static inline u32 dp_read_aux(struct dp_catalog_private *catalog, u32 offset)
{
offset += MSM_DP_CONTROLLER_AUX_OFFSET;
diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.h b/drivers/gpu/drm/msm/dp/dp_catalog.h
index 4b7666f1fe6f..af48590913e3 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.h
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.h
@@ -9,6 +9,7 @@
#include <drm/drm_modes.h>

#include "dp_parser.h"
+#include "dpu_dbg.h"

/* interrupts */
#define DP_INTR_HPD BIT(0)
@@ -71,6 +72,9 @@ struct dp_catalog {
u32 audio_data;
};

+/* Debug module */
+void dp_catalog_register_dbg_base(struct dp_catalog *dp_catalog);
+
/* AUX APIs */
u32 dp_catalog_aux_read_data(struct dp_catalog *dp_catalog);
int dp_catalog_aux_write_data(struct dp_catalog *dp_catalog);
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index e175aa3fd3a9..4a5735564be2 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -230,6 +230,8 @@ static int dp_display_bind(struct device *dev, struct device *master,
if (rc)
DRM_ERROR("Audio registration Dp failed\n");

+ dp_catalog_register_dbg_base(dp->catalog);
+
end:
return rc;
}
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index b17ac6c27554..97c04d31f289 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2015, 2020 The Linux Foundation. All rights reserved.
*/

#include <linux/clk.h>
@@ -26,6 +26,8 @@
#include "sfpb.xml.h"
#include "dsi_cfg.h"
#include "msm_kms.h"
+#include "dpu_dbg.h"
+#include "msm_drv.h"

#define DSI_RESET_TOGGLE_DELAY_MS 20

@@ -1823,6 +1825,7 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
struct msm_dsi_host *msm_host = NULL;
struct platform_device *pdev = msm_dsi->pdev;
int ret;
+ char dbg_name[32];

msm_host = devm_kzalloc(&pdev->dev, sizeof(*msm_host), GFP_KERNEL);
if (!msm_host) {
@@ -1912,6 +1915,11 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)

msm_dsi->id = msm_host->id;

+ snprintf(dbg_name, 32, "dsi%d_ctrl",
+ msm_host->id);
+ dpu_dbg_reg_register_base(dbg_name, msm_host->ctrl_base,
+ msm_iomap_size(pdev, "dsi_ctrl"));
+
DBG("Dsi Host %d initialized", msm_host->id);
return 0;

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index f6fb0187388f..df505a3d53e8 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -17,8 +17,8 @@
#include <drm/drm_prime.h>
#include <drm/drm_of.h>
#include <drm/drm_vblank.h>
-#include "dpu_dbg.h"

+#include "dpu_dbg.h"
#include "msm_drv.h"
#include "msm_debugfs.h"
#include "msm_fence.h"
@@ -166,6 +166,24 @@ void __iomem *msm_ioremap_quiet(struct platform_device *pdev, const char *name,
return _msm_ioremap(pdev, name, dbgname, true);
}

+unsigned long msm_iomap_size(struct platform_device *pdev, const char *name)
+{
+ struct resource *res;
+
+ if (name)
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
+ else
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ if (!res) {
+ dev_dbg(&pdev->dev, "failed to get memory resource: %s\n",
+ name);
+ return 0;
+ }
+
+ return resource_size(res);
+}
+
void msm_writel(u32 data, void __iomem *addr)
{
if (reglog)
@@ -535,6 +553,8 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv)
if (ret)
goto err_msm_uninit;

+ dpu_dbg_register_drm_dev(ddev);
+
drm_mode_config_reset(ddev);

#ifdef CONFIG_DRM_FBDEV_EMULATION
@@ -1282,6 +1302,10 @@ static int msm_pdev_probe(struct platform_device *pdev)
int ret;

if (get_mdp_ver(pdev)) {
+ ret = dpu_dbg_init(&pdev->dev);
+ if (ret)
+ pr_err("dpu_dbg_init failed ret = %d\n", ret);
+
ret = add_display_components(&pdev->dev, &match);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index b9dd8f8f4887..211161bdce2f 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
- * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2018, 2020 The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*/
@@ -476,6 +476,7 @@ void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
const char *dbgname);
void __iomem *msm_ioremap_quiet(struct platform_device *pdev, const char *name,
const char *dbgname);
+unsigned long msm_iomap_size(struct platform_device *pdev, const char *name);
void msm_writel(u32 data, void __iomem *addr);
u32 msm_readl(const void __iomem *addr);

--
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