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drm/vc4: Bind and initialize the V3D engine.

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This is the component of the GPU that does 3D rendering.

Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Eric Anholt 2015-03-02 13:01:12 -08:00
parent 1fa81589bb
commit d3f5168a08
5 changed files with 242 additions and 0 deletions
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1
drivers/gpu/drm/vc4/Makefile
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@ -11,6 +11,7 @@ vc4-y := \
vc4_hdmi.o \
vc4_hvs.o \
vc4_plane.o \
vc4_v3d.o \
vc4_validate_shaders.o
vc4-$(CONFIG_DEBUG_FS) += vc4_debugfs.o

2
drivers/gpu/drm/vc4/vc4_debugfs.c
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@ -22,6 +22,8 @@ static const struct drm_info_list vc4_debugfs_list[] = {
{"crtc0_regs", vc4_crtc_debugfs_regs, 0, (void *)(uintptr_t)0},
{"crtc1_regs", vc4_crtc_debugfs_regs, 0, (void *)(uintptr_t)1},
{"crtc2_regs", vc4_crtc_debugfs_regs, 0, (void *)(uintptr_t)2},
{"v3d_ident", vc4_v3d_debugfs_ident, 0},
{"v3d_regs", vc4_v3d_debugfs_regs, 0},
};
#define VC4_DEBUGFS_ENTRIES ARRAY_SIZE(vc4_debugfs_list)

1
drivers/gpu/drm/vc4/vc4_drv.c
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@ -236,6 +236,7 @@ static struct platform_driver *const component_drivers[] = {
&vc4_hdmi_driver,
&vc4_crtc_driver,
&vc4_hvs_driver,
&vc4_v3d_driver,
};
static int vc4_platform_drm_probe(struct platform_device *pdev)

13
drivers/gpu/drm/vc4/vc4_drv.h
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@ -15,6 +15,7 @@ struct vc4_dev {
struct vc4_hdmi *hdmi;
struct vc4_hvs *hvs;
struct vc4_crtc *crtc[3];
struct vc4_v3d *v3d;
struct drm_fbdev_cma *fbdev;
@ -82,6 +83,11 @@ to_vc4_bo(struct drm_gem_object *bo)
return (struct vc4_bo *)bo;
}
struct vc4_v3d {
struct platform_device *pdev;
void __iomem *regs;
};
struct vc4_hvs {
struct platform_device *pdev;
void __iomem *regs;
@ -119,6 +125,8 @@ to_vc4_encoder(struct drm_encoder *encoder)
return container_of(encoder, struct vc4_encoder, base);
}
#define V3D_READ(offset) readl(vc4->v3d->regs + offset)
#define V3D_WRITE(offset, val) writel(val, vc4->v3d->regs + offset)
#define HVS_READ(offset) readl(vc4->hvs->regs + offset)
#define HVS_WRITE(offset, val) writel(val, vc4->hvs->regs + offset)
@ -241,6 +249,11 @@ struct drm_plane *vc4_plane_init(struct drm_device *dev,
u32 vc4_plane_write_dlist(struct drm_plane *plane, u32 __iomem *dlist);
u32 vc4_plane_dlist_size(struct drm_plane_state *state);
/* vc4_v3d.c */
extern struct platform_driver vc4_v3d_driver;
int vc4_v3d_debugfs_ident(struct seq_file *m, void *unused);
int vc4_v3d_debugfs_regs(struct seq_file *m, void *unused);
/* vc4_validate_shader.c */
struct vc4_validated_shader_info *
vc4_validate_shader(struct drm_gem_cma_object *shader_obj);

225
drivers/gpu/drm/vc4/vc4_v3d.c Normal file
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@ -0,0 +1,225 @@
/*
* Copyright (c) 2014 The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "linux/component.h"
#include "vc4_drv.h"
#include "vc4_regs.h"
#ifdef CONFIG_DEBUG_FS
#define REGDEF(reg) { reg, #reg }
static const struct {
uint32_t reg;
const char *name;
} vc4_reg_defs[] = {
REGDEF(V3D_IDENT0),
REGDEF(V3D_IDENT1),
REGDEF(V3D_IDENT2),
REGDEF(V3D_SCRATCH),
REGDEF(V3D_L2CACTL),
REGDEF(V3D_SLCACTL),
REGDEF(V3D_INTCTL),
REGDEF(V3D_INTENA),
REGDEF(V3D_INTDIS),
REGDEF(V3D_CT0CS),
REGDEF(V3D_CT1CS),
REGDEF(V3D_CT0EA),
REGDEF(V3D_CT1EA),
REGDEF(V3D_CT0CA),
REGDEF(V3D_CT1CA),
REGDEF(V3D_CT00RA0),
REGDEF(V3D_CT01RA0),
REGDEF(V3D_CT0LC),
REGDEF(V3D_CT1LC),
REGDEF(V3D_CT0PC),
REGDEF(V3D_CT1PC),
REGDEF(V3D_PCS),
REGDEF(V3D_BFC),
REGDEF(V3D_RFC),
REGDEF(V3D_BPCA),
REGDEF(V3D_BPCS),
REGDEF(V3D_BPOA),
REGDEF(V3D_BPOS),
REGDEF(V3D_BXCF),
REGDEF(V3D_SQRSV0),
REGDEF(V3D_SQRSV1),
REGDEF(V3D_SQCNTL),
REGDEF(V3D_SRQPC),
REGDEF(V3D_SRQUA),
REGDEF(V3D_SRQUL),
REGDEF(V3D_SRQCS),
REGDEF(V3D_VPACNTL),
REGDEF(V3D_VPMBASE),
REGDEF(V3D_PCTRC),
REGDEF(V3D_PCTRE),
REGDEF(V3D_PCTR0),
REGDEF(V3D_PCTRS0),
REGDEF(V3D_PCTR1),
REGDEF(V3D_PCTRS1),
REGDEF(V3D_PCTR2),
REGDEF(V3D_PCTRS2),
REGDEF(V3D_PCTR3),
REGDEF(V3D_PCTRS3),
REGDEF(V3D_PCTR4),
REGDEF(V3D_PCTRS4),
REGDEF(V3D_PCTR5),
REGDEF(V3D_PCTRS5),
REGDEF(V3D_PCTR6),
REGDEF(V3D_PCTRS6),
REGDEF(V3D_PCTR7),
REGDEF(V3D_PCTRS7),
REGDEF(V3D_PCTR8),
REGDEF(V3D_PCTRS8),
REGDEF(V3D_PCTR9),
REGDEF(V3D_PCTRS9),
REGDEF(V3D_PCTR10),
REGDEF(V3D_PCTRS10),
REGDEF(V3D_PCTR11),
REGDEF(V3D_PCTRS11),
REGDEF(V3D_PCTR12),
REGDEF(V3D_PCTRS12),
REGDEF(V3D_PCTR13),
REGDEF(V3D_PCTRS13),
REGDEF(V3D_PCTR14),
REGDEF(V3D_PCTRS14),
REGDEF(V3D_PCTR15),
REGDEF(V3D_PCTRS15),
REGDEF(V3D_DBGE),
REGDEF(V3D_FDBGO),
REGDEF(V3D_FDBGB),
REGDEF(V3D_FDBGR),
REGDEF(V3D_FDBGS),
REGDEF(V3D_ERRSTAT),
};
int vc4_v3d_debugfs_regs(struct seq_file *m, void *unused)
{
struct drm_info_node *node = (struct drm_info_node *)m->private;
struct drm_device *dev = node->minor->dev;
struct vc4_dev *vc4 = to_vc4_dev(dev);
int i;
for (i = 0; i < ARRAY_SIZE(vc4_reg_defs); i++) {
seq_printf(m, "%s (0x%04x): 0x%08x\n",
vc4_reg_defs[i].name, vc4_reg_defs[i].reg,
V3D_READ(vc4_reg_defs[i].reg));
}
return 0;
}
int vc4_v3d_debugfs_ident(struct seq_file *m, void *unused)
{
struct drm_info_node *node = (struct drm_info_node *)m->private;
struct drm_device *dev = node->minor->dev;
struct vc4_dev *vc4 = to_vc4_dev(dev);
uint32_t ident1 = V3D_READ(V3D_IDENT1);
uint32_t nslc = VC4_GET_FIELD(ident1, V3D_IDENT1_NSLC);
uint32_t tups = VC4_GET_FIELD(ident1, V3D_IDENT1_TUPS);
uint32_t qups = VC4_GET_FIELD(ident1, V3D_IDENT1_QUPS);
seq_printf(m, "Revision: %d\n",
VC4_GET_FIELD(ident1, V3D_IDENT1_REV));
seq_printf(m, "Slices: %d\n", nslc);
seq_printf(m, "TMUs: %d\n", nslc * tups);
seq_printf(m, "QPUs: %d\n", nslc * qups);
seq_printf(m, "Semaphores: %d\n",
VC4_GET_FIELD(ident1, V3D_IDENT1_NSEM));
return 0;
}
#endif /* CONFIG_DEBUG_FS */
static void vc4_v3d_init_hw(struct drm_device *dev)
{
struct vc4_dev *vc4 = to_vc4_dev(dev);
/* Take all the memory that would have been reserved for user
* QPU programs, since we don't have an interface for running
* them, anyway.
*/
V3D_WRITE(V3D_VPMBASE, 0);
}
static int vc4_v3d_bind(struct device *dev, struct device *master, void *data)
{
struct platform_device *pdev = to_platform_device(dev);
struct drm_device *drm = dev_get_drvdata(master);
struct vc4_dev *vc4 = to_vc4_dev(drm);
struct vc4_v3d *v3d = NULL;
v3d = devm_kzalloc(&pdev->dev, sizeof(*v3d), GFP_KERNEL);
if (!v3d)
return -ENOMEM;
v3d->pdev = pdev;
v3d->regs = vc4_ioremap_regs(pdev, 0);
if (IS_ERR(v3d->regs))
return PTR_ERR(v3d->regs);
vc4->v3d = v3d;
if (V3D_READ(V3D_IDENT0) != V3D_EXPECTED_IDENT0) {
DRM_ERROR("V3D_IDENT0 read 0x%08x instead of 0x%08x\n",
V3D_READ(V3D_IDENT0), V3D_EXPECTED_IDENT0);
return -EINVAL;
}
vc4_v3d_init_hw(drm);
return 0;
}
static void vc4_v3d_unbind(struct device *dev, struct device *master,
void *data)
{
struct drm_device *drm = dev_get_drvdata(master);
struct vc4_dev *vc4 = to_vc4_dev(drm);
vc4->v3d = NULL;
}
static const struct component_ops vc4_v3d_ops = {
.bind = vc4_v3d_bind,
.unbind = vc4_v3d_unbind,
};
static int vc4_v3d_dev_probe(struct platform_device *pdev)
{
return component_add(&pdev->dev, &vc4_v3d_ops);
}
static int vc4_v3d_dev_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &vc4_v3d_ops);
return 0;
}
static const struct of_device_id vc4_v3d_dt_match[] = {
{ .compatible = "brcm,vc4-v3d" },
{}
};
struct platform_driver vc4_v3d_driver = {
.probe = vc4_v3d_dev_probe,
.remove = vc4_v3d_dev_remove,
.driver = {
.name = "vc4_v3d",
.of_match_table = vc4_v3d_dt_match,
},
};