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/*
* 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 */
int
vc4_v3d_set_power(struct vc4_dev *vc4, bool on)
{
/* XXX: This interface is needed for GPU reset, and the way to
* do it is to turn our power domain off and back on. We
* can't just reset from within the driver, because the reset
* bits are in the power domain's register area, and get set
* during the poweron process.
*/
return 0;
}
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;
int ret;
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;
}
/* Reset the binner overflow address/size at setup, to be sure
* we don't reuse an old one.
*/
V3D_WRITE(V3D_BPOA, 0);
V3D_WRITE(V3D_BPOS, 0);
vc4_v3d_init_hw(drm);
ret = drm_irq_install(drm, platform_get_irq(pdev, 0));
if (ret) {
DRM_ERROR("Failed to install IRQ handler\n");
return ret;
}
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);
drm_irq_uninstall(drm);
/* Disable the binner's overflow memory address, so the next
* driver probe (if any) doesn't try to reuse our old
* allocation.
*/
V3D_WRITE(V3D_BPOA, 0);
V3D_WRITE(V3D_BPOS, 0);
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,
},
};
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