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Commit 796c3e35 authored by Thomas Zimmermann's avatar Thomas Zimmermann
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drm/bochs: Move to tiny/ 

The bochs driver is only ~600 lines of code. Putting it into tiny/
cleans up the DRM directory slightly. Some style problems were fixed
and unneeded include statements were removed. No functional changes.

v2:
	* make bochs_mode_funcs static (Daniel, kernel test robot)
	* rebase onto aperture API changes
Signed-off-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Acked-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210702075434.27677-2-tzimmermann@suse.de
parent 3f5aa5ac
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MAINTAINERS
View file @ 796c3e35
......@@ -5672,7 +5672,7 @@ M: Gerd Hoffmann <kraxel@redhat.com>
L: virtualization@lists.linux-foundation.org
S: Maintained
T: git git://anongit.freedesktop.org/drm/drm-misc
F: drivers/gpu/drm/bochs/
F: drivers/gpu/drm/tiny/bochs.c
DRM DRIVER FOR BOE HIMAX8279D PANELS
M: Jerry Han <hanxu5@huaqin.corp-partner.google.com>
......
drivers/gpu/drm/Kconfig
View file @ 796c3e35
......@@ -322,8 +322,6 @@ source "drivers/gpu/drm/tilcdc/Kconfig"
source "drivers/gpu/drm/qxl/Kconfig"
source "drivers/gpu/drm/bochs/Kconfig"
source "drivers/gpu/drm/virtio/Kconfig"
source "drivers/gpu/drm/msm/Kconfig"
......
drivers/gpu/drm/Makefile
View file @ 796c3e35
......@@ -98,7 +98,6 @@ obj-y += omapdrm/
obj-$(CONFIG_DRM_SUN4I) += sun4i/
obj-y += tilcdc/
obj-$(CONFIG_DRM_QXL) += qxl/
obj-$(CONFIG_DRM_BOCHS) += bochs/
obj-$(CONFIG_DRM_VIRTIO_GPU) += virtio/
obj-$(CONFIG_DRM_MSM) += msm/
obj-$(CONFIG_DRM_TEGRA) += tegra/
......
drivers/gpu/drm/bochs/Kconfig deleted 100644 → 0
View file @ 3f5aa5ac
# SPDX-License-Identifier: GPL-2.0-only
config DRM_BOCHS
tristate "DRM Support for bochs dispi vga interface (qemu stdvga)"
depends on DRM && PCI && MMU
select DRM_KMS_HELPER
select DRM_VRAM_HELPER
select DRM_TTM
select DRM_TTM_HELPER
help
Choose this option for qemu.
If M is selected the module will be called bochs-drm.
drivers/gpu/drm/bochs/Makefile deleted 100644 → 0
View file @ 3f5aa5ac
# SPDX-License-Identifier: GPL-2.0-only
bochs-drm-y := bochs_drv.o bochs_mm.o bochs_kms.o bochs_hw.o
obj-$(CONFIG_DRM_BOCHS) += bochs-drm.o
drivers/gpu/drm/bochs/bochs.h deleted 100644 → 0
View file @ 3f5aa5ac
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/io.h>
#include <linux/console.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_encoder.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_vram_helper.h>
#include <drm/drm_simple_kms_helper.h>
/* ---------------------------------------------------------------------- */
#define VBE_DISPI_IOPORT_INDEX 0x01CE
#define VBE_DISPI_IOPORT_DATA 0x01CF
#define VBE_DISPI_INDEX_ID 0x0
#define VBE_DISPI_INDEX_XRES 0x1
#define VBE_DISPI_INDEX_YRES 0x2
#define VBE_DISPI_INDEX_BPP 0x3
#define VBE_DISPI_INDEX_ENABLE 0x4
#define VBE_DISPI_INDEX_BANK 0x5
#define VBE_DISPI_INDEX_VIRT_WIDTH 0x6
#define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7
#define VBE_DISPI_INDEX_X_OFFSET 0x8
#define VBE_DISPI_INDEX_Y_OFFSET 0x9
#define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa
#define VBE_DISPI_ID0 0xB0C0
#define VBE_DISPI_ID1 0xB0C1
#define VBE_DISPI_ID2 0xB0C2
#define VBE_DISPI_ID3 0xB0C3
#define VBE_DISPI_ID4 0xB0C4
#define VBE_DISPI_ID5 0xB0C5
#define VBE_DISPI_DISABLED 0x00
#define VBE_DISPI_ENABLED 0x01
#define VBE_DISPI_GETCAPS 0x02
#define VBE_DISPI_8BIT_DAC 0x20
#define VBE_DISPI_LFB_ENABLED 0x40
#define VBE_DISPI_NOCLEARMEM 0x80
/* ---------------------------------------------------------------------- */
enum bochs_types {
BOCHS_QEMU_STDVGA,
BOCHS_UNKNOWN,
};
struct bochs_device {
/* hw */
void __iomem *mmio;
int ioports;
void __iomem *fb_map;
unsigned long fb_base;
unsigned long fb_size;
unsigned long qext_size;
/* mode */
u16 xres;
u16 yres;
u16 yres_virtual;
u32 stride;
u32 bpp;
struct edid *edid;
/* drm */
struct drm_device *dev;
struct drm_simple_display_pipe pipe;
struct drm_connector connector;
};
/* ---------------------------------------------------------------------- */
/* bochs_hw.c */
int bochs_hw_init(struct drm_device *dev);
void bochs_hw_fini(struct drm_device *dev);
void bochs_hw_blank(struct bochs_device *bochs, bool blank);
void bochs_hw_setmode(struct bochs_device *bochs,
struct drm_display_mode *mode);
void bochs_hw_setformat(struct bochs_device *bochs,
const struct drm_format_info *format);
void bochs_hw_setbase(struct bochs_device *bochs,
int x, int y, int stride, u64 addr);
int bochs_hw_load_edid(struct bochs_device *bochs);
/* bochs_mm.c */
int bochs_mm_init(struct bochs_device *bochs);
void bochs_mm_fini(struct bochs_device *bochs);
/* bochs_kms.c */
int bochs_kms_init(struct bochs_device *bochs);
/* bochs_fbdev.c */
extern const struct drm_mode_config_funcs bochs_mode_funcs;
drivers/gpu/drm/bochs/bochs_drv.c deleted 100644 → 0
View file @ 3f5aa5ac
// SPDX-License-Identifier: GPL-2.0-or-later
/*
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <drm/drm_drv.h>
#include <drm/drm_aperture.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_managed.h>
#include "bochs.h"
static int bochs_modeset = -1;
module_param_named(modeset, bochs_modeset, int, 0444);
MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting");
/* ---------------------------------------------------------------------- */
/* drm interface */
static void bochs_unload(struct drm_device *dev)
{
struct bochs_device *bochs = dev->dev_private;
bochs_mm_fini(bochs);
}
static int bochs_load(struct drm_device *dev)
{
struct bochs_device *bochs;
int ret;
bochs = drmm_kzalloc(dev, sizeof(*bochs), GFP_KERNEL);
if (bochs == NULL)
return -ENOMEM;
dev->dev_private = bochs;
bochs->dev = dev;
ret = bochs_hw_init(dev);
if (ret)
goto err;
ret = bochs_mm_init(bochs);
if (ret)
goto err;
ret = bochs_kms_init(bochs);
if (ret)
goto err;
return 0;
err:
bochs_unload(dev);
return ret;
}
DEFINE_DRM_GEM_FOPS(bochs_fops);
static const struct drm_driver bochs_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
.fops = &bochs_fops,
.name = "bochs-drm",
.desc = "bochs dispi vga interface (qemu stdvga)",
.date = "20130925",
.major = 1,
.minor = 0,
DRM_GEM_VRAM_DRIVER,
.release = bochs_unload,
};
/* ---------------------------------------------------------------------- */
/* pm interface */
#ifdef CONFIG_PM_SLEEP
static int bochs_pm_suspend(struct device *dev)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
return drm_mode_config_helper_suspend(drm_dev);
}
static int bochs_pm_resume(struct device *dev)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
return drm_mode_config_helper_resume(drm_dev);
}
#endif
static const struct dev_pm_ops bochs_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
bochs_pm_resume)
};
/* ---------------------------------------------------------------------- */
/* pci interface */
static int bochs_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct drm_device *dev;
unsigned long fbsize;
int ret;
fbsize = pci_resource_len(pdev, 0);
if (fbsize < 4 * 1024 * 1024) {
DRM_ERROR("less than 4 MB video memory, ignoring device\n");
return -ENOMEM;
}
ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &bochs_driver);
if (ret)
return ret;
dev = drm_dev_alloc(&bochs_driver, &pdev->dev);
if (IS_ERR(dev))
return PTR_ERR(dev);
ret = pci_enable_device(pdev);
if (ret)
goto err_free_dev;
pci_set_drvdata(pdev, dev);
ret = bochs_load(dev);
if (ret)
goto err_free_dev;
ret = drm_dev_register(dev, 0);
if (ret)
goto err_unload;
drm_fbdev_generic_setup(dev, 32);
return ret;
err_unload:
bochs_unload(dev);
err_free_dev:
drm_dev_put(dev);
return ret;
}
static void bochs_pci_remove(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
drm_dev_unplug(dev);
drm_atomic_helper_shutdown(dev);
bochs_hw_fini(dev);
drm_dev_put(dev);
}
static const struct pci_device_id bochs_pci_tbl[] = {
{
.vendor = 0x1234,
.device = 0x1111,
.subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET,
.subdevice = PCI_SUBDEVICE_ID_QEMU,
.driver_data = BOCHS_QEMU_STDVGA,
},
{
.vendor = 0x1234,
.device = 0x1111,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.driver_data = BOCHS_UNKNOWN,
},
{ /* end of list */ }
};
static struct pci_driver bochs_pci_driver = {
.name = "bochs-drm",
.id_table = bochs_pci_tbl,
.probe = bochs_pci_probe,
.remove = bochs_pci_remove,
.driver.pm = &bochs_pm_ops,
};
/* ---------------------------------------------------------------------- */
/* module init/exit */
static int __init bochs_init(void)
{
if (vgacon_text_force() && bochs_modeset == -1)
return -EINVAL;
if (bochs_modeset == 0)
return -EINVAL;
return pci_register_driver(&bochs_pci_driver);
}
static void __exit bochs_exit(void)
{
pci_unregister_driver(&bochs_pci_driver);
}
module_init(bochs_init);
module_exit(bochs_exit);
MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
MODULE_LICENSE("GPL");
drivers/gpu/drm/bochs/bochs_kms.c deleted 100644 → 0
View file @ 3f5aa5ac
// SPDX-License-Identifier: GPL-2.0-or-later
/*
*/
#include <linux/moduleparam.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_probe_helper.h>
#include "bochs.h"
static int defx = 1024;
static int defy = 768;
module_param(defx, int, 0444);
module_param(defy, int, 0444);
MODULE_PARM_DESC(defx, "default x resolution");
MODULE_PARM_DESC(defy, "default y resolution");
/* ---------------------------------------------------------------------- */
static const uint32_t bochs_formats[] = {
DRM_FORMAT_XRGB8888,
DRM_FORMAT_BGRX8888,
};
static void bochs_plane_update(struct bochs_device *bochs,
struct drm_plane_state *state)
{
struct drm_gem_vram_object *gbo;
s64 gpu_addr;
if (!state->fb || !bochs->stride)
return;
gbo = drm_gem_vram_of_gem(state->fb->obj[0]);
gpu_addr = drm_gem_vram_offset(gbo);
if (WARN_ON_ONCE(gpu_addr < 0))
return; /* Bug: we didn't pin the BO to VRAM in prepare_fb. */
bochs_hw_setbase(bochs,
state->crtc_x,
state->crtc_y,
state->fb->pitches[0],
state->fb->offsets[0] + gpu_addr);
bochs_hw_setformat(bochs, state->fb->format);
}
static void bochs_pipe_enable(struct drm_simple_display_pipe *pipe,
struct drm_crtc_state *crtc_state,
struct drm_plane_state *plane_state)
{
struct bochs_device *bochs = pipe->crtc.dev->dev_private;
bochs_hw_setmode(bochs, &crtc_state->mode);
bochs_plane_update(bochs, plane_state);
}
static void bochs_pipe_disable(struct drm_simple_display_pipe *pipe)
{
struct bochs_device *bochs = pipe->crtc.dev->dev_private;
bochs_hw_blank(bochs, true);
}
static void bochs_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *old_state)
{
struct bochs_device *bochs = pipe->crtc.dev->dev_private;
bochs_plane_update(bochs, pipe->plane.state);
}
static const struct drm_simple_display_pipe_funcs bochs_pipe_funcs = {
.enable = bochs_pipe_enable,
.disable = bochs_pipe_disable,
.update = bochs_pipe_update,
.prepare_fb = drm_gem_vram_simple_display_pipe_prepare_fb,
.cleanup_fb = drm_gem_vram_simple_display_pipe_cleanup_fb,
};
static int bochs_connector_get_modes(struct drm_connector *connector)
{
struct bochs_device *bochs =
container_of(connector, struct bochs_device, connector);
int count = 0;
if (bochs->edid)
count = drm_add_edid_modes(connector, bochs->edid);
if (!count) {
count = drm_add_modes_noedid(connector, 8192, 8192);
drm_set_preferred_mode(connector, defx, defy);
}
return count;
}
static const struct drm_connector_helper_funcs bochs_connector_connector_helper_funcs = {
.get_modes = bochs_connector_get_modes,
};
static const struct drm_connector_funcs bochs_connector_connector_funcs = {
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = drm_connector_cleanup,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static void bochs_connector_init(struct drm_device *dev)
{
struct bochs_device *bochs = dev->dev_private;
struct drm_connector *connector = &bochs->connector;
drm_connector_init(dev, connector, &bochs_connector_connector_funcs,
DRM_MODE_CONNECTOR_VIRTUAL);
drm_connector_helper_add(connector,
&bochs_connector_connector_helper_funcs);
bochs_hw_load_edid(bochs);
if (bochs->edid) {
DRM_INFO("Found EDID data blob.\n");
drm_connector_attach_edid_property(connector);
drm_connector_update_edid_property(connector, bochs->edid);
}
}
static struct drm_framebuffer *
bochs_gem_fb_create(struct drm_device *dev, struct drm_file *file,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
if (mode_cmd->pixel_format != DRM_FORMAT_XRGB8888 &&
mode_cmd->pixel_format != DRM_FORMAT_BGRX8888)
return ERR_PTR(-EINVAL);
return drm_gem_fb_create(dev, file, mode_cmd);
}
const struct drm_mode_config_funcs bochs_mode_funcs = {
.fb_create = bochs_gem_fb_create,
.mode_valid = drm_vram_helper_mode_valid,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
int bochs_kms_init(struct bochs_device *bochs)
{
int ret;
ret = drmm_mode_config_init(bochs->dev);
if (ret)
return ret;
bochs->dev->mode_config.max_width = 8192;
bochs->dev->mode_config.max_height = 8192;
bochs->dev->mode_config.fb_base = bochs->fb_base;
bochs->dev->mode_config.preferred_depth = 24;
bochs->dev->mode_config.prefer_shadow = 0;
bochs->dev->mode_config.prefer_shadow_fbdev = 1;
bochs->dev->mode_config.quirk_addfb_prefer_host_byte_order = true;
bochs->dev->mode_config.funcs = &bochs_mode_funcs;
bochs_connector_init(bochs->dev);
drm_simple_display_pipe_init(bochs->dev,
&bochs->pipe,
&bochs_pipe_funcs,
bochs_formats,
ARRAY_SIZE(bochs_formats),
NULL,
&bochs->connector);
drm_mode_config_reset(bochs->dev);
return 0;
}
drivers/gpu/drm/bochs/bochs_mm.c deleted 100644 → 0
View file @ 3f5aa5ac
// SPDX-License-Identifier: GPL-2.0-or-later
/*
*/
#include "bochs.h"
/* ---------------------------------------------------------------------- */
int bochs_mm_init(struct bochs_device *bochs)
{
struct drm_vram_mm *vmm;
vmm = drm_vram_helper_alloc_mm(bochs->dev, bochs->fb_base,
bochs->fb_size);
return PTR_ERR_OR_ZERO(vmm);
}
void bochs_mm_fini(struct bochs_device *bochs)
{
if (!bochs->dev->vram_mm)
return;
drm_vram_helper_release_mm(bochs->dev);
}
drivers/gpu/drm/tiny/Kconfig
View file @ 796c3e35
......@@ -10,6 +10,19 @@ config DRM_ARCPGU
If M is selected the module will be called arcpgu.
config DRM_BOCHS
tristate "DRM Support for bochs dispi vga interface (qemu stdvga)"
depends on DRM && PCI && MMU
select DRM_KMS_HELPER
select DRM_VRAM_HELPER
select DRM_TTM
select DRM_TTM_HELPER
help
This is a KMS driver for qemu's stdvga output. Choose this option
for qemu.
If M is selected the module will be called bochs.
config DRM_CIRRUS_QEMU
tristate "Cirrus driver for QEMU emulated device"
depends on DRM && PCI && MMU
......
drivers/gpu/drm/tiny/Makefile
View file @ 796c3e35
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_DRM_ARCPGU) += arcpgu.o
obj-$(CONFIG_DRM_BOCHS) += bochs.o
obj-$(CONFIG_DRM_CIRRUS_QEMU) += cirrus.o
obj-$(CONFIG_DRM_GM12U320) += gm12u320.o
obj-$(CONFIG_DRM_SIMPLEDRM) += simpledrm.o
......
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