* [PATCH v2 0/3] drm/bochs: Move to tiny/ and simplify
@ 2021-07-02 7:54 ` Thomas Zimmermann
0 siblings, 0 replies; 8+ messages in thread
From: Thomas Zimmermann @ 2021-07-02 7:54 UTC (permalink / raw)
To: kraxel, daniel, airlied, mripard, maarten.lankhorst
Cc: Thomas Zimmermann, dri-devel, virtualization
Move the bochs driver to tiny/ and simplify the clean-up code. Also
update GEM VRAM helpers accordingly.
v2:
* make bochs_mode_funcs static (Daniel, kernel test robot)
Thomas Zimmermann (3):
drm/bochs: Move to tiny/
drm/bochs: Use managed initialization for GEM VRAM helpers
drm/vram-helper: Unexport drm_vram_helper_{alloc,release}_mm()
MAINTAINERS | 2 +-
drivers/gpu/drm/Kconfig | 2 -
drivers/gpu/drm/Makefile | 1 -
drivers/gpu/drm/bochs/Kconfig | 11 -
drivers/gpu/drm/bochs/Makefile | 4 -
drivers/gpu/drm/bochs/bochs.h | 98 ----
drivers/gpu/drm/bochs/bochs_drv.c | 205 -------
drivers/gpu/drm/bochs/bochs_hw.c | 323 ------------
drivers/gpu/drm/bochs/bochs_kms.c | 178 -------
drivers/gpu/drm/bochs/bochs_mm.c | 24 -
drivers/gpu/drm/drm_gem_vram_helper.c | 9 +-
drivers/gpu/drm/tiny/Kconfig | 13 +
drivers/gpu/drm/tiny/Makefile | 1 +
drivers/gpu/drm/tiny/bochs.c | 733 ++++++++++++++++++++++++++
include/drm/drm_gem_vram_helper.h | 4 -
15 files changed, 751 insertions(+), 857 deletions(-)
delete mode 100644 drivers/gpu/drm/bochs/Kconfig
delete mode 100644 drivers/gpu/drm/bochs/Makefile
delete mode 100644 drivers/gpu/drm/bochs/bochs.h
delete mode 100644 drivers/gpu/drm/bochs/bochs_drv.c
delete mode 100644 drivers/gpu/drm/bochs/bochs_hw.c
delete mode 100644 drivers/gpu/drm/bochs/bochs_kms.c
delete mode 100644 drivers/gpu/drm/bochs/bochs_mm.c
create mode 100644 drivers/gpu/drm/tiny/bochs.c
--
2.32.0
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^ permalink raw reply [flat|nested] 8+ messages in thread* [PATCH v2 0/3] drm/bochs: Move to tiny/ and simplify @ 2021-07-02 7:54 ` Thomas Zimmermann 0 siblings, 0 replies; 8+ messages in thread From: Thomas Zimmermann @ 2021-07-02 7:54 UTC (permalink / raw) To: kraxel, daniel, airlied, mripard, maarten.lankhorst Cc: Thomas Zimmermann, dri-devel, virtualization Move the bochs driver to tiny/ and simplify the clean-up code. Also update GEM VRAM helpers accordingly. v2: * make bochs_mode_funcs static (Daniel, kernel test robot) Thomas Zimmermann (3): drm/bochs: Move to tiny/ drm/bochs: Use managed initialization for GEM VRAM helpers drm/vram-helper: Unexport drm_vram_helper_{alloc,release}_mm() MAINTAINERS | 2 +- drivers/gpu/drm/Kconfig | 2 - drivers/gpu/drm/Makefile | 1 - drivers/gpu/drm/bochs/Kconfig | 11 - drivers/gpu/drm/bochs/Makefile | 4 - drivers/gpu/drm/bochs/bochs.h | 98 ---- drivers/gpu/drm/bochs/bochs_drv.c | 205 ------- drivers/gpu/drm/bochs/bochs_hw.c | 323 ------------ drivers/gpu/drm/bochs/bochs_kms.c | 178 ------- drivers/gpu/drm/bochs/bochs_mm.c | 24 - drivers/gpu/drm/drm_gem_vram_helper.c | 9 +- drivers/gpu/drm/tiny/Kconfig | 13 + drivers/gpu/drm/tiny/Makefile | 1 + drivers/gpu/drm/tiny/bochs.c | 733 ++++++++++++++++++++++++++ include/drm/drm_gem_vram_helper.h | 4 - 15 files changed, 751 insertions(+), 857 deletions(-) delete mode 100644 drivers/gpu/drm/bochs/Kconfig delete mode 100644 drivers/gpu/drm/bochs/Makefile delete mode 100644 drivers/gpu/drm/bochs/bochs.h delete mode 100644 drivers/gpu/drm/bochs/bochs_drv.c delete mode 100644 drivers/gpu/drm/bochs/bochs_hw.c delete mode 100644 drivers/gpu/drm/bochs/bochs_kms.c delete mode 100644 drivers/gpu/drm/bochs/bochs_mm.c create mode 100644 drivers/gpu/drm/tiny/bochs.c -- 2.32.0 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v2 1/3] drm/bochs: Move to tiny/ 2021-07-02 7:54 ` Thomas Zimmermann @ 2021-07-02 7:54 ` Thomas Zimmermann -1 siblings, 0 replies; 8+ messages in thread From: Thomas Zimmermann @ 2021-07-02 7:54 UTC (permalink / raw) To: kraxel, daniel, airlied, mripard, maarten.lankhorst Cc: Daniel Vetter, Thomas Zimmermann, dri-devel, virtualization 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: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> --- MAINTAINERS | 2 +- drivers/gpu/drm/Kconfig | 2 - drivers/gpu/drm/Makefile | 1 - drivers/gpu/drm/bochs/Kconfig | 11 - drivers/gpu/drm/bochs/Makefile | 4 - drivers/gpu/drm/bochs/bochs.h | 98 ---- drivers/gpu/drm/bochs/bochs_drv.c | 205 -------- drivers/gpu/drm/bochs/bochs_hw.c | 323 ------------- drivers/gpu/drm/bochs/bochs_kms.c | 178 ------- drivers/gpu/drm/bochs/bochs_mm.c | 24 - drivers/gpu/drm/tiny/Kconfig | 13 + drivers/gpu/drm/tiny/Makefile | 1 + drivers/gpu/drm/tiny/bochs.c | 766 ++++++++++++++++++++++++++++++ 13 files changed, 781 insertions(+), 847 deletions(-) delete mode 100644 drivers/gpu/drm/bochs/Kconfig delete mode 100644 drivers/gpu/drm/bochs/Makefile delete mode 100644 drivers/gpu/drm/bochs/bochs.h delete mode 100644 drivers/gpu/drm/bochs/bochs_drv.c delete mode 100644 drivers/gpu/drm/bochs/bochs_hw.c delete mode 100644 drivers/gpu/drm/bochs/bochs_kms.c delete mode 100644 drivers/gpu/drm/bochs/bochs_mm.c create mode 100644 drivers/gpu/drm/tiny/bochs.c diff --git a/MAINTAINERS b/MAINTAINERS index dcb5f0d32303..95bad8d45200 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5680,7 +5680,7 @@ 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> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 1366d8d4610a..0d372354c2d0 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -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" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 12e6f4e485ed..ad1112154898 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -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/ diff --git a/drivers/gpu/drm/bochs/Kconfig b/drivers/gpu/drm/bochs/Kconfig deleted file mode 100644 index 7bcdf294fed8..000000000000 --- a/drivers/gpu/drm/bochs/Kconfig +++ /dev/null @@ -1,11 +0,0 @@ -# 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. diff --git a/drivers/gpu/drm/bochs/Makefile b/drivers/gpu/drm/bochs/Makefile deleted file mode 100644 index 55473371300f..000000000000 --- a/drivers/gpu/drm/bochs/Makefile +++ /dev/null @@ -1,4 +0,0 @@ -# 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 diff --git a/drivers/gpu/drm/bochs/bochs.h b/drivers/gpu/drm/bochs/bochs.h deleted file mode 100644 index e9645c612aff..000000000000 --- a/drivers/gpu/drm/bochs/bochs.h +++ /dev/null @@ -1,98 +0,0 @@ -/* 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; diff --git a/drivers/gpu/drm/bochs/bochs_drv.c b/drivers/gpu/drm/bochs/bochs_drv.c deleted file mode 100644 index 0d232b44ecd7..000000000000 --- a/drivers/gpu/drm/bochs/bochs_drv.c +++ /dev/null @@ -1,205 +0,0 @@ -// 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"); diff --git a/drivers/gpu/drm/bochs/bochs_hw.c b/drivers/gpu/drm/bochs/bochs_hw.c deleted file mode 100644 index 7d3426d8cc69..000000000000 --- a/drivers/gpu/drm/bochs/bochs_hw.c +++ /dev/null @@ -1,323 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - */ - -#include <linux/pci.h> - -#include <drm/drm_drv.h> -#include <drm/drm_fourcc.h> - -#include <video/vga.h> -#include "bochs.h" - -/* ---------------------------------------------------------------------- */ - -static void bochs_vga_writeb(struct bochs_device *bochs, u16 ioport, u8 val) -{ - if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df)) - return; - - if (bochs->mmio) { - int offset = ioport - 0x3c0 + 0x400; - writeb(val, bochs->mmio + offset); - } else { - outb(val, ioport); - } -} - -static u8 bochs_vga_readb(struct bochs_device *bochs, u16 ioport) -{ - if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df)) - return 0xff; - - if (bochs->mmio) { - int offset = ioport - 0x3c0 + 0x400; - return readb(bochs->mmio + offset); - } else { - return inb(ioport); - } -} - -static u16 bochs_dispi_read(struct bochs_device *bochs, u16 reg) -{ - u16 ret = 0; - - if (bochs->mmio) { - int offset = 0x500 + (reg << 1); - ret = readw(bochs->mmio + offset); - } else { - outw(reg, VBE_DISPI_IOPORT_INDEX); - ret = inw(VBE_DISPI_IOPORT_DATA); - } - return ret; -} - -static void bochs_dispi_write(struct bochs_device *bochs, u16 reg, u16 val) -{ - if (bochs->mmio) { - int offset = 0x500 + (reg << 1); - writew(val, bochs->mmio + offset); - } else { - outw(reg, VBE_DISPI_IOPORT_INDEX); - outw(val, VBE_DISPI_IOPORT_DATA); - } -} - -static void bochs_hw_set_big_endian(struct bochs_device *bochs) -{ - if (bochs->qext_size < 8) - return; - - writel(0xbebebebe, bochs->mmio + 0x604); -} - -static void bochs_hw_set_little_endian(struct bochs_device *bochs) -{ - if (bochs->qext_size < 8) - return; - - writel(0x1e1e1e1e, bochs->mmio + 0x604); -} - -#ifdef __BIG_ENDIAN -#define bochs_hw_set_native_endian(_b) bochs_hw_set_big_endian(_b) -#else -#define bochs_hw_set_native_endian(_b) bochs_hw_set_little_endian(_b) -#endif - -static int bochs_get_edid_block(void *data, u8 *buf, - unsigned int block, size_t len) -{ - struct bochs_device *bochs = data; - size_t i, start = block * EDID_LENGTH; - - if (start + len > 0x400 /* vga register offset */) - return -1; - - for (i = 0; i < len; i++) { - buf[i] = readb(bochs->mmio + start + i); - } - return 0; -} - -int bochs_hw_load_edid(struct bochs_device *bochs) -{ - u8 header[8]; - - if (!bochs->mmio) - return -1; - - /* check header to detect whenever edid support is enabled in qemu */ - bochs_get_edid_block(bochs, header, 0, ARRAY_SIZE(header)); - if (drm_edid_header_is_valid(header) != 8) - return -1; - - kfree(bochs->edid); - bochs->edid = drm_do_get_edid(&bochs->connector, - bochs_get_edid_block, bochs); - if (bochs->edid == NULL) - return -1; - - return 0; -} - -int bochs_hw_init(struct drm_device *dev) -{ - struct bochs_device *bochs = dev->dev_private; - struct pci_dev *pdev = to_pci_dev(dev->dev); - unsigned long addr, size, mem, ioaddr, iosize; - u16 id; - - if (pdev->resource[2].flags & IORESOURCE_MEM) { - /* mmio bar with vga and bochs registers present */ - if (pci_request_region(pdev, 2, "bochs-drm") != 0) { - DRM_ERROR("Cannot request mmio region\n"); - return -EBUSY; - } - ioaddr = pci_resource_start(pdev, 2); - iosize = pci_resource_len(pdev, 2); - bochs->mmio = ioremap(ioaddr, iosize); - if (bochs->mmio == NULL) { - DRM_ERROR("Cannot map mmio region\n"); - return -ENOMEM; - } - } else { - ioaddr = VBE_DISPI_IOPORT_INDEX; - iosize = 2; - if (!request_region(ioaddr, iosize, "bochs-drm")) { - DRM_ERROR("Cannot request ioports\n"); - return -EBUSY; - } - bochs->ioports = 1; - } - - id = bochs_dispi_read(bochs, VBE_DISPI_INDEX_ID); - mem = bochs_dispi_read(bochs, VBE_DISPI_INDEX_VIDEO_MEMORY_64K) - * 64 * 1024; - if ((id & 0xfff0) != VBE_DISPI_ID0) { - DRM_ERROR("ID mismatch\n"); - return -ENODEV; - } - - if ((pdev->resource[0].flags & IORESOURCE_MEM) == 0) - return -ENODEV; - addr = pci_resource_start(pdev, 0); - size = pci_resource_len(pdev, 0); - if (addr == 0) - return -ENODEV; - if (size != mem) { - DRM_ERROR("Size mismatch: pci=%ld, bochs=%ld\n", - size, mem); - size = min(size, mem); - } - - if (pci_request_region(pdev, 0, "bochs-drm") != 0) - DRM_WARN("Cannot request framebuffer, boot fb still active?\n"); - - bochs->fb_map = ioremap(addr, size); - if (bochs->fb_map == NULL) { - DRM_ERROR("Cannot map framebuffer\n"); - return -ENOMEM; - } - bochs->fb_base = addr; - bochs->fb_size = size; - - DRM_INFO("Found bochs VGA, ID 0x%x.\n", id); - DRM_INFO("Framebuffer size %ld kB @ 0x%lx, %s @ 0x%lx.\n", - size / 1024, addr, - bochs->ioports ? "ioports" : "mmio", - ioaddr); - - if (bochs->mmio && pdev->revision >= 2) { - bochs->qext_size = readl(bochs->mmio + 0x600); - if (bochs->qext_size < 4 || bochs->qext_size > iosize) { - bochs->qext_size = 0; - goto noext; - } - DRM_DEBUG("Found qemu ext regs, size %ld\n", - bochs->qext_size); - bochs_hw_set_native_endian(bochs); - } - -noext: - return 0; -} - -void bochs_hw_fini(struct drm_device *dev) -{ - struct bochs_device *bochs = dev->dev_private; - - /* TODO: shot down existing vram mappings */ - - if (bochs->mmio) - iounmap(bochs->mmio); - if (bochs->ioports) - release_region(VBE_DISPI_IOPORT_INDEX, 2); - if (bochs->fb_map) - iounmap(bochs->fb_map); - pci_release_regions(to_pci_dev(dev->dev)); - kfree(bochs->edid); -} - -void bochs_hw_blank(struct bochs_device *bochs, bool blank) -{ - DRM_DEBUG_DRIVER("hw_blank %d\n", blank); - /* discard ar_flip_flop */ - (void)bochs_vga_readb(bochs, VGA_IS1_RC); - /* blank or unblank; we need only update index and set 0x20 */ - bochs_vga_writeb(bochs, VGA_ATT_W, blank ? 0 : 0x20); -} - -void bochs_hw_setmode(struct bochs_device *bochs, - struct drm_display_mode *mode) -{ - int idx; - - if (!drm_dev_enter(bochs->dev, &idx)) - return; - - bochs->xres = mode->hdisplay; - bochs->yres = mode->vdisplay; - bochs->bpp = 32; - bochs->stride = mode->hdisplay * (bochs->bpp / 8); - bochs->yres_virtual = bochs->fb_size / bochs->stride; - - DRM_DEBUG_DRIVER("%dx%d @ %d bpp, vy %d\n", - bochs->xres, bochs->yres, bochs->bpp, - bochs->yres_virtual); - - bochs_hw_blank(bochs, false); - - bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, 0); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_BPP, bochs->bpp); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_XRES, bochs->xres); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_YRES, bochs->yres); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_BANK, 0); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, bochs->xres); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_HEIGHT, - bochs->yres_virtual); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, 0); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, 0); - - bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, - VBE_DISPI_ENABLED | VBE_DISPI_LFB_ENABLED); - - drm_dev_exit(idx); -} - -void bochs_hw_setformat(struct bochs_device *bochs, - const struct drm_format_info *format) -{ - int idx; - - if (!drm_dev_enter(bochs->dev, &idx)) - return; - - DRM_DEBUG_DRIVER("format %c%c%c%c\n", - (format->format >> 0) & 0xff, - (format->format >> 8) & 0xff, - (format->format >> 16) & 0xff, - (format->format >> 24) & 0xff); - - switch (format->format) { - case DRM_FORMAT_XRGB8888: - bochs_hw_set_little_endian(bochs); - break; - case DRM_FORMAT_BGRX8888: - bochs_hw_set_big_endian(bochs); - break; - default: - /* should not happen */ - DRM_ERROR("%s: Huh? Got framebuffer format 0x%x", - __func__, format->format); - break; - } - - drm_dev_exit(idx); -} - -void bochs_hw_setbase(struct bochs_device *bochs, - int x, int y, int stride, u64 addr) -{ - unsigned long offset; - unsigned int vx, vy, vwidth, idx; - - if (!drm_dev_enter(bochs->dev, &idx)) - return; - - bochs->stride = stride; - offset = (unsigned long)addr + - y * bochs->stride + - x * (bochs->bpp / 8); - vy = offset / bochs->stride; - vx = (offset % bochs->stride) * 8 / bochs->bpp; - vwidth = stride * 8 / bochs->bpp; - - DRM_DEBUG_DRIVER("x %d, y %d, addr %llx -> offset %lx, vx %d, vy %d\n", - x, y, addr, offset, vx, vy); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, vwidth); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, vx); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, vy); - - drm_dev_exit(idx); -} diff --git a/drivers/gpu/drm/bochs/bochs_kms.c b/drivers/gpu/drm/bochs/bochs_kms.c deleted file mode 100644 index 99410e77d51a..000000000000 --- a/drivers/gpu/drm/bochs/bochs_kms.c +++ /dev/null @@ -1,178 +0,0 @@ -// 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; -} diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c deleted file mode 100644 index 1b74f530b07c..000000000000 --- a/drivers/gpu/drm/bochs/bochs_mm.c +++ /dev/null @@ -1,24 +0,0 @@ -// 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); -} diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig index d46f95d9196d..5593128eeff9 100644 --- a/drivers/gpu/drm/tiny/Kconfig +++ b/drivers/gpu/drm/tiny/Kconfig @@ -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 diff --git a/drivers/gpu/drm/tiny/Makefile b/drivers/gpu/drm/tiny/Makefile index 9cc847e756da..e09942895c77 100644 --- a/drivers/gpu/drm/tiny/Makefile +++ b/drivers/gpu/drm/tiny/Makefile @@ -1,6 +1,7 @@ # 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 diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c new file mode 100644 index 000000000000..0700cdacc5d6 --- /dev/null +++ b/drivers/gpu/drm/tiny/bochs.c @@ -0,0 +1,766 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include <linux/console.h> +#include <linux/pci.h> + +#include <drm/drm_aperture.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_drv.h> +#include <drm/drm_fb_helper.h> +#include <drm/drm_fourcc.h> +#include <drm/drm_gem_framebuffer_helper.h> +#include <drm/drm_gem_vram_helper.h> +#include <drm/drm_managed.h> +#include <drm/drm_probe_helper.h> +#include <drm/drm_simple_kms_helper.h> + +#include <video/vga.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 + +static int bochs_modeset = -1; +static int defx = 1024; +static int defy = 768; + +module_param_named(modeset, bochs_modeset, int, 0444); +MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting"); + +module_param(defx, int, 0444); +module_param(defy, int, 0444); +MODULE_PARM_DESC(defx, "default x resolution"); +MODULE_PARM_DESC(defy, "default y resolution"); + +/* ---------------------------------------------------------------------- */ + +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; +}; + +/* ---------------------------------------------------------------------- */ + +static void bochs_vga_writeb(struct bochs_device *bochs, u16 ioport, u8 val) +{ + if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df)) + return; + + if (bochs->mmio) { + int offset = ioport - 0x3c0 + 0x400; + + writeb(val, bochs->mmio + offset); + } else { + outb(val, ioport); + } +} + +static u8 bochs_vga_readb(struct bochs_device *bochs, u16 ioport) +{ + if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df)) + return 0xff; + + if (bochs->mmio) { + int offset = ioport - 0x3c0 + 0x400; + + return readb(bochs->mmio + offset); + } else { + return inb(ioport); + } +} + +static u16 bochs_dispi_read(struct bochs_device *bochs, u16 reg) +{ + u16 ret = 0; + + if (bochs->mmio) { + int offset = 0x500 + (reg << 1); + + ret = readw(bochs->mmio + offset); + } else { + outw(reg, VBE_DISPI_IOPORT_INDEX); + ret = inw(VBE_DISPI_IOPORT_DATA); + } + return ret; +} + +static void bochs_dispi_write(struct bochs_device *bochs, u16 reg, u16 val) +{ + if (bochs->mmio) { + int offset = 0x500 + (reg << 1); + + writew(val, bochs->mmio + offset); + } else { + outw(reg, VBE_DISPI_IOPORT_INDEX); + outw(val, VBE_DISPI_IOPORT_DATA); + } +} + +static void bochs_hw_set_big_endian(struct bochs_device *bochs) +{ + if (bochs->qext_size < 8) + return; + + writel(0xbebebebe, bochs->mmio + 0x604); +} + +static void bochs_hw_set_little_endian(struct bochs_device *bochs) +{ + if (bochs->qext_size < 8) + return; + + writel(0x1e1e1e1e, bochs->mmio + 0x604); +} + +#ifdef __BIG_ENDIAN +#define bochs_hw_set_native_endian(_b) bochs_hw_set_big_endian(_b) +#else +#define bochs_hw_set_native_endian(_b) bochs_hw_set_little_endian(_b) +#endif + +static int bochs_get_edid_block(void *data, u8 *buf, + unsigned int block, size_t len) +{ + struct bochs_device *bochs = data; + size_t i, start = block * EDID_LENGTH; + + if (start + len > 0x400 /* vga register offset */) + return -1; + + for (i = 0; i < len; i++) + buf[i] = readb(bochs->mmio + start + i); + + return 0; +} + +static int bochs_hw_load_edid(struct bochs_device *bochs) +{ + u8 header[8]; + + if (!bochs->mmio) + return -1; + + /* check header to detect whenever edid support is enabled in qemu */ + bochs_get_edid_block(bochs, header, 0, ARRAY_SIZE(header)); + if (drm_edid_header_is_valid(header) != 8) + return -1; + + kfree(bochs->edid); + bochs->edid = drm_do_get_edid(&bochs->connector, + bochs_get_edid_block, bochs); + if (bochs->edid == NULL) + return -1; + + return 0; +} + +static int bochs_hw_init(struct drm_device *dev) +{ + struct bochs_device *bochs = dev->dev_private; + struct pci_dev *pdev = to_pci_dev(dev->dev); + unsigned long addr, size, mem, ioaddr, iosize; + u16 id; + + if (pdev->resource[2].flags & IORESOURCE_MEM) { + /* mmio bar with vga and bochs registers present */ + if (pci_request_region(pdev, 2, "bochs-drm") != 0) { + DRM_ERROR("Cannot request mmio region\n"); + return -EBUSY; + } + ioaddr = pci_resource_start(pdev, 2); + iosize = pci_resource_len(pdev, 2); + bochs->mmio = ioremap(ioaddr, iosize); + if (bochs->mmio == NULL) { + DRM_ERROR("Cannot map mmio region\n"); + return -ENOMEM; + } + } else { + ioaddr = VBE_DISPI_IOPORT_INDEX; + iosize = 2; + if (!request_region(ioaddr, iosize, "bochs-drm")) { + DRM_ERROR("Cannot request ioports\n"); + return -EBUSY; + } + bochs->ioports = 1; + } + + id = bochs_dispi_read(bochs, VBE_DISPI_INDEX_ID); + mem = bochs_dispi_read(bochs, VBE_DISPI_INDEX_VIDEO_MEMORY_64K) + * 64 * 1024; + if ((id & 0xfff0) != VBE_DISPI_ID0) { + DRM_ERROR("ID mismatch\n"); + return -ENODEV; + } + + if ((pdev->resource[0].flags & IORESOURCE_MEM) == 0) + return -ENODEV; + addr = pci_resource_start(pdev, 0); + size = pci_resource_len(pdev, 0); + if (addr == 0) + return -ENODEV; + if (size != mem) { + DRM_ERROR("Size mismatch: pci=%ld, bochs=%ld\n", + size, mem); + size = min(size, mem); + } + + if (pci_request_region(pdev, 0, "bochs-drm") != 0) + DRM_WARN("Cannot request framebuffer, boot fb still active?\n"); + + bochs->fb_map = ioremap(addr, size); + if (bochs->fb_map == NULL) { + DRM_ERROR("Cannot map framebuffer\n"); + return -ENOMEM; + } + bochs->fb_base = addr; + bochs->fb_size = size; + + DRM_INFO("Found bochs VGA, ID 0x%x.\n", id); + DRM_INFO("Framebuffer size %ld kB @ 0x%lx, %s @ 0x%lx.\n", + size / 1024, addr, + bochs->ioports ? "ioports" : "mmio", + ioaddr); + + if (bochs->mmio && pdev->revision >= 2) { + bochs->qext_size = readl(bochs->mmio + 0x600); + if (bochs->qext_size < 4 || bochs->qext_size > iosize) { + bochs->qext_size = 0; + goto noext; + } + DRM_DEBUG("Found qemu ext regs, size %ld\n", + bochs->qext_size); + bochs_hw_set_native_endian(bochs); + } + +noext: + return 0; +} + +static void bochs_hw_fini(struct drm_device *dev) +{ + struct bochs_device *bochs = dev->dev_private; + + /* TODO: shot down existing vram mappings */ + + if (bochs->mmio) + iounmap(bochs->mmio); + if (bochs->ioports) + release_region(VBE_DISPI_IOPORT_INDEX, 2); + if (bochs->fb_map) + iounmap(bochs->fb_map); + pci_release_regions(to_pci_dev(dev->dev)); + kfree(bochs->edid); +} + +static void bochs_hw_blank(struct bochs_device *bochs, bool blank) +{ + DRM_DEBUG_DRIVER("hw_blank %d\n", blank); + /* discard ar_flip_flop */ + (void)bochs_vga_readb(bochs, VGA_IS1_RC); + /* blank or unblank; we need only update index and set 0x20 */ + bochs_vga_writeb(bochs, VGA_ATT_W, blank ? 0 : 0x20); +} + +static void bochs_hw_setmode(struct bochs_device *bochs, struct drm_display_mode *mode) +{ + int idx; + + if (!drm_dev_enter(bochs->dev, &idx)) + return; + + bochs->xres = mode->hdisplay; + bochs->yres = mode->vdisplay; + bochs->bpp = 32; + bochs->stride = mode->hdisplay * (bochs->bpp / 8); + bochs->yres_virtual = bochs->fb_size / bochs->stride; + + DRM_DEBUG_DRIVER("%dx%d @ %d bpp, vy %d\n", + bochs->xres, bochs->yres, bochs->bpp, + bochs->yres_virtual); + + bochs_hw_blank(bochs, false); + + bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, 0); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_BPP, bochs->bpp); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_XRES, bochs->xres); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_YRES, bochs->yres); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_BANK, 0); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, bochs->xres); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_HEIGHT, + bochs->yres_virtual); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, 0); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, 0); + + bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, + VBE_DISPI_ENABLED | VBE_DISPI_LFB_ENABLED); + + drm_dev_exit(idx); +} + +static void bochs_hw_setformat(struct bochs_device *bochs, const struct drm_format_info *format) +{ + int idx; + + if (!drm_dev_enter(bochs->dev, &idx)) + return; + + DRM_DEBUG_DRIVER("format %c%c%c%c\n", + (format->format >> 0) & 0xff, + (format->format >> 8) & 0xff, + (format->format >> 16) & 0xff, + (format->format >> 24) & 0xff); + + switch (format->format) { + case DRM_FORMAT_XRGB8888: + bochs_hw_set_little_endian(bochs); + break; + case DRM_FORMAT_BGRX8888: + bochs_hw_set_big_endian(bochs); + break; + default: + /* should not happen */ + DRM_ERROR("%s: Huh? Got framebuffer format 0x%x", + __func__, format->format); + break; + } + + drm_dev_exit(idx); +} + +static void bochs_hw_setbase(struct bochs_device *bochs, int x, int y, int stride, u64 addr) +{ + unsigned long offset; + unsigned int vx, vy, vwidth, idx; + + if (!drm_dev_enter(bochs->dev, &idx)) + return; + + bochs->stride = stride; + offset = (unsigned long)addr + + y * bochs->stride + + x * (bochs->bpp / 8); + vy = offset / bochs->stride; + vx = (offset % bochs->stride) * 8 / bochs->bpp; + vwidth = stride * 8 / bochs->bpp; + + DRM_DEBUG_DRIVER("x %d, y %d, addr %llx -> offset %lx, vx %d, vy %d\n", + x, y, addr, offset, vx, vy); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, vwidth); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, vx); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, vy); + + drm_dev_exit(idx); +} + +/* ---------------------------------------------------------------------- */ + +static 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); +} + +static void bochs_mm_fini(struct bochs_device *bochs) +{ + if (!bochs->dev->vram_mm) + return; + + drm_vram_helper_release_mm(bochs->dev); +} + +/* ---------------------------------------------------------------------- */ + +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); +} + +static 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, +}; + +static 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; +} + +/* ---------------------------------------------------------------------- */ +/* 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"); -- 2.32.0 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization ^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v2 1/3] drm/bochs: Move to tiny/ @ 2021-07-02 7:54 ` Thomas Zimmermann 0 siblings, 0 replies; 8+ messages in thread From: Thomas Zimmermann @ 2021-07-02 7:54 UTC (permalink / raw) To: kraxel, daniel, airlied, mripard, maarten.lankhorst Cc: Daniel Vetter, Thomas Zimmermann, dri-devel, virtualization 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: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> --- MAINTAINERS | 2 +- drivers/gpu/drm/Kconfig | 2 - drivers/gpu/drm/Makefile | 1 - drivers/gpu/drm/bochs/Kconfig | 11 - drivers/gpu/drm/bochs/Makefile | 4 - drivers/gpu/drm/bochs/bochs.h | 98 ---- drivers/gpu/drm/bochs/bochs_drv.c | 205 -------- drivers/gpu/drm/bochs/bochs_hw.c | 323 ------------- drivers/gpu/drm/bochs/bochs_kms.c | 178 ------- drivers/gpu/drm/bochs/bochs_mm.c | 24 - drivers/gpu/drm/tiny/Kconfig | 13 + drivers/gpu/drm/tiny/Makefile | 1 + drivers/gpu/drm/tiny/bochs.c | 766 ++++++++++++++++++++++++++++++ 13 files changed, 781 insertions(+), 847 deletions(-) delete mode 100644 drivers/gpu/drm/bochs/Kconfig delete mode 100644 drivers/gpu/drm/bochs/Makefile delete mode 100644 drivers/gpu/drm/bochs/bochs.h delete mode 100644 drivers/gpu/drm/bochs/bochs_drv.c delete mode 100644 drivers/gpu/drm/bochs/bochs_hw.c delete mode 100644 drivers/gpu/drm/bochs/bochs_kms.c delete mode 100644 drivers/gpu/drm/bochs/bochs_mm.c create mode 100644 drivers/gpu/drm/tiny/bochs.c diff --git a/MAINTAINERS b/MAINTAINERS index dcb5f0d32303..95bad8d45200 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5680,7 +5680,7 @@ 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> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 1366d8d4610a..0d372354c2d0 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -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" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 12e6f4e485ed..ad1112154898 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -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/ diff --git a/drivers/gpu/drm/bochs/Kconfig b/drivers/gpu/drm/bochs/Kconfig deleted file mode 100644 index 7bcdf294fed8..000000000000 --- a/drivers/gpu/drm/bochs/Kconfig +++ /dev/null @@ -1,11 +0,0 @@ -# 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. diff --git a/drivers/gpu/drm/bochs/Makefile b/drivers/gpu/drm/bochs/Makefile deleted file mode 100644 index 55473371300f..000000000000 --- a/drivers/gpu/drm/bochs/Makefile +++ /dev/null @@ -1,4 +0,0 @@ -# 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 diff --git a/drivers/gpu/drm/bochs/bochs.h b/drivers/gpu/drm/bochs/bochs.h deleted file mode 100644 index e9645c612aff..000000000000 --- a/drivers/gpu/drm/bochs/bochs.h +++ /dev/null @@ -1,98 +0,0 @@ -/* 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; diff --git a/drivers/gpu/drm/bochs/bochs_drv.c b/drivers/gpu/drm/bochs/bochs_drv.c deleted file mode 100644 index 0d232b44ecd7..000000000000 --- a/drivers/gpu/drm/bochs/bochs_drv.c +++ /dev/null @@ -1,205 +0,0 @@ -// 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"); diff --git a/drivers/gpu/drm/bochs/bochs_hw.c b/drivers/gpu/drm/bochs/bochs_hw.c deleted file mode 100644 index 7d3426d8cc69..000000000000 --- a/drivers/gpu/drm/bochs/bochs_hw.c +++ /dev/null @@ -1,323 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - */ - -#include <linux/pci.h> - -#include <drm/drm_drv.h> -#include <drm/drm_fourcc.h> - -#include <video/vga.h> -#include "bochs.h" - -/* ---------------------------------------------------------------------- */ - -static void bochs_vga_writeb(struct bochs_device *bochs, u16 ioport, u8 val) -{ - if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df)) - return; - - if (bochs->mmio) { - int offset = ioport - 0x3c0 + 0x400; - writeb(val, bochs->mmio + offset); - } else { - outb(val, ioport); - } -} - -static u8 bochs_vga_readb(struct bochs_device *bochs, u16 ioport) -{ - if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df)) - return 0xff; - - if (bochs->mmio) { - int offset = ioport - 0x3c0 + 0x400; - return readb(bochs->mmio + offset); - } else { - return inb(ioport); - } -} - -static u16 bochs_dispi_read(struct bochs_device *bochs, u16 reg) -{ - u16 ret = 0; - - if (bochs->mmio) { - int offset = 0x500 + (reg << 1); - ret = readw(bochs->mmio + offset); - } else { - outw(reg, VBE_DISPI_IOPORT_INDEX); - ret = inw(VBE_DISPI_IOPORT_DATA); - } - return ret; -} - -static void bochs_dispi_write(struct bochs_device *bochs, u16 reg, u16 val) -{ - if (bochs->mmio) { - int offset = 0x500 + (reg << 1); - writew(val, bochs->mmio + offset); - } else { - outw(reg, VBE_DISPI_IOPORT_INDEX); - outw(val, VBE_DISPI_IOPORT_DATA); - } -} - -static void bochs_hw_set_big_endian(struct bochs_device *bochs) -{ - if (bochs->qext_size < 8) - return; - - writel(0xbebebebe, bochs->mmio + 0x604); -} - -static void bochs_hw_set_little_endian(struct bochs_device *bochs) -{ - if (bochs->qext_size < 8) - return; - - writel(0x1e1e1e1e, bochs->mmio + 0x604); -} - -#ifdef __BIG_ENDIAN -#define bochs_hw_set_native_endian(_b) bochs_hw_set_big_endian(_b) -#else -#define bochs_hw_set_native_endian(_b) bochs_hw_set_little_endian(_b) -#endif - -static int bochs_get_edid_block(void *data, u8 *buf, - unsigned int block, size_t len) -{ - struct bochs_device *bochs = data; - size_t i, start = block * EDID_LENGTH; - - if (start + len > 0x400 /* vga register offset */) - return -1; - - for (i = 0; i < len; i++) { - buf[i] = readb(bochs->mmio + start + i); - } - return 0; -} - -int bochs_hw_load_edid(struct bochs_device *bochs) -{ - u8 header[8]; - - if (!bochs->mmio) - return -1; - - /* check header to detect whenever edid support is enabled in qemu */ - bochs_get_edid_block(bochs, header, 0, ARRAY_SIZE(header)); - if (drm_edid_header_is_valid(header) != 8) - return -1; - - kfree(bochs->edid); - bochs->edid = drm_do_get_edid(&bochs->connector, - bochs_get_edid_block, bochs); - if (bochs->edid == NULL) - return -1; - - return 0; -} - -int bochs_hw_init(struct drm_device *dev) -{ - struct bochs_device *bochs = dev->dev_private; - struct pci_dev *pdev = to_pci_dev(dev->dev); - unsigned long addr, size, mem, ioaddr, iosize; - u16 id; - - if (pdev->resource[2].flags & IORESOURCE_MEM) { - /* mmio bar with vga and bochs registers present */ - if (pci_request_region(pdev, 2, "bochs-drm") != 0) { - DRM_ERROR("Cannot request mmio region\n"); - return -EBUSY; - } - ioaddr = pci_resource_start(pdev, 2); - iosize = pci_resource_len(pdev, 2); - bochs->mmio = ioremap(ioaddr, iosize); - if (bochs->mmio == NULL) { - DRM_ERROR("Cannot map mmio region\n"); - return -ENOMEM; - } - } else { - ioaddr = VBE_DISPI_IOPORT_INDEX; - iosize = 2; - if (!request_region(ioaddr, iosize, "bochs-drm")) { - DRM_ERROR("Cannot request ioports\n"); - return -EBUSY; - } - bochs->ioports = 1; - } - - id = bochs_dispi_read(bochs, VBE_DISPI_INDEX_ID); - mem = bochs_dispi_read(bochs, VBE_DISPI_INDEX_VIDEO_MEMORY_64K) - * 64 * 1024; - if ((id & 0xfff0) != VBE_DISPI_ID0) { - DRM_ERROR("ID mismatch\n"); - return -ENODEV; - } - - if ((pdev->resource[0].flags & IORESOURCE_MEM) == 0) - return -ENODEV; - addr = pci_resource_start(pdev, 0); - size = pci_resource_len(pdev, 0); - if (addr == 0) - return -ENODEV; - if (size != mem) { - DRM_ERROR("Size mismatch: pci=%ld, bochs=%ld\n", - size, mem); - size = min(size, mem); - } - - if (pci_request_region(pdev, 0, "bochs-drm") != 0) - DRM_WARN("Cannot request framebuffer, boot fb still active?\n"); - - bochs->fb_map = ioremap(addr, size); - if (bochs->fb_map == NULL) { - DRM_ERROR("Cannot map framebuffer\n"); - return -ENOMEM; - } - bochs->fb_base = addr; - bochs->fb_size = size; - - DRM_INFO("Found bochs VGA, ID 0x%x.\n", id); - DRM_INFO("Framebuffer size %ld kB @ 0x%lx, %s @ 0x%lx.\n", - size / 1024, addr, - bochs->ioports ? "ioports" : "mmio", - ioaddr); - - if (bochs->mmio && pdev->revision >= 2) { - bochs->qext_size = readl(bochs->mmio + 0x600); - if (bochs->qext_size < 4 || bochs->qext_size > iosize) { - bochs->qext_size = 0; - goto noext; - } - DRM_DEBUG("Found qemu ext regs, size %ld\n", - bochs->qext_size); - bochs_hw_set_native_endian(bochs); - } - -noext: - return 0; -} - -void bochs_hw_fini(struct drm_device *dev) -{ - struct bochs_device *bochs = dev->dev_private; - - /* TODO: shot down existing vram mappings */ - - if (bochs->mmio) - iounmap(bochs->mmio); - if (bochs->ioports) - release_region(VBE_DISPI_IOPORT_INDEX, 2); - if (bochs->fb_map) - iounmap(bochs->fb_map); - pci_release_regions(to_pci_dev(dev->dev)); - kfree(bochs->edid); -} - -void bochs_hw_blank(struct bochs_device *bochs, bool blank) -{ - DRM_DEBUG_DRIVER("hw_blank %d\n", blank); - /* discard ar_flip_flop */ - (void)bochs_vga_readb(bochs, VGA_IS1_RC); - /* blank or unblank; we need only update index and set 0x20 */ - bochs_vga_writeb(bochs, VGA_ATT_W, blank ? 0 : 0x20); -} - -void bochs_hw_setmode(struct bochs_device *bochs, - struct drm_display_mode *mode) -{ - int idx; - - if (!drm_dev_enter(bochs->dev, &idx)) - return; - - bochs->xres = mode->hdisplay; - bochs->yres = mode->vdisplay; - bochs->bpp = 32; - bochs->stride = mode->hdisplay * (bochs->bpp / 8); - bochs->yres_virtual = bochs->fb_size / bochs->stride; - - DRM_DEBUG_DRIVER("%dx%d @ %d bpp, vy %d\n", - bochs->xres, bochs->yres, bochs->bpp, - bochs->yres_virtual); - - bochs_hw_blank(bochs, false); - - bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, 0); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_BPP, bochs->bpp); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_XRES, bochs->xres); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_YRES, bochs->yres); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_BANK, 0); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, bochs->xres); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_HEIGHT, - bochs->yres_virtual); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, 0); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, 0); - - bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, - VBE_DISPI_ENABLED | VBE_DISPI_LFB_ENABLED); - - drm_dev_exit(idx); -} - -void bochs_hw_setformat(struct bochs_device *bochs, - const struct drm_format_info *format) -{ - int idx; - - if (!drm_dev_enter(bochs->dev, &idx)) - return; - - DRM_DEBUG_DRIVER("format %c%c%c%c\n", - (format->format >> 0) & 0xff, - (format->format >> 8) & 0xff, - (format->format >> 16) & 0xff, - (format->format >> 24) & 0xff); - - switch (format->format) { - case DRM_FORMAT_XRGB8888: - bochs_hw_set_little_endian(bochs); - break; - case DRM_FORMAT_BGRX8888: - bochs_hw_set_big_endian(bochs); - break; - default: - /* should not happen */ - DRM_ERROR("%s: Huh? Got framebuffer format 0x%x", - __func__, format->format); - break; - } - - drm_dev_exit(idx); -} - -void bochs_hw_setbase(struct bochs_device *bochs, - int x, int y, int stride, u64 addr) -{ - unsigned long offset; - unsigned int vx, vy, vwidth, idx; - - if (!drm_dev_enter(bochs->dev, &idx)) - return; - - bochs->stride = stride; - offset = (unsigned long)addr + - y * bochs->stride + - x * (bochs->bpp / 8); - vy = offset / bochs->stride; - vx = (offset % bochs->stride) * 8 / bochs->bpp; - vwidth = stride * 8 / bochs->bpp; - - DRM_DEBUG_DRIVER("x %d, y %d, addr %llx -> offset %lx, vx %d, vy %d\n", - x, y, addr, offset, vx, vy); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, vwidth); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, vx); - bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, vy); - - drm_dev_exit(idx); -} diff --git a/drivers/gpu/drm/bochs/bochs_kms.c b/drivers/gpu/drm/bochs/bochs_kms.c deleted file mode 100644 index 99410e77d51a..000000000000 --- a/drivers/gpu/drm/bochs/bochs_kms.c +++ /dev/null @@ -1,178 +0,0 @@ -// 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; -} diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c deleted file mode 100644 index 1b74f530b07c..000000000000 --- a/drivers/gpu/drm/bochs/bochs_mm.c +++ /dev/null @@ -1,24 +0,0 @@ -// 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); -} diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig index d46f95d9196d..5593128eeff9 100644 --- a/drivers/gpu/drm/tiny/Kconfig +++ b/drivers/gpu/drm/tiny/Kconfig @@ -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 diff --git a/drivers/gpu/drm/tiny/Makefile b/drivers/gpu/drm/tiny/Makefile index 9cc847e756da..e09942895c77 100644 --- a/drivers/gpu/drm/tiny/Makefile +++ b/drivers/gpu/drm/tiny/Makefile @@ -1,6 +1,7 @@ # 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 diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c new file mode 100644 index 000000000000..0700cdacc5d6 --- /dev/null +++ b/drivers/gpu/drm/tiny/bochs.c @@ -0,0 +1,766 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include <linux/console.h> +#include <linux/pci.h> + +#include <drm/drm_aperture.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_drv.h> +#include <drm/drm_fb_helper.h> +#include <drm/drm_fourcc.h> +#include <drm/drm_gem_framebuffer_helper.h> +#include <drm/drm_gem_vram_helper.h> +#include <drm/drm_managed.h> +#include <drm/drm_probe_helper.h> +#include <drm/drm_simple_kms_helper.h> + +#include <video/vga.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 + +static int bochs_modeset = -1; +static int defx = 1024; +static int defy = 768; + +module_param_named(modeset, bochs_modeset, int, 0444); +MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting"); + +module_param(defx, int, 0444); +module_param(defy, int, 0444); +MODULE_PARM_DESC(defx, "default x resolution"); +MODULE_PARM_DESC(defy, "default y resolution"); + +/* ---------------------------------------------------------------------- */ + +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; +}; + +/* ---------------------------------------------------------------------- */ + +static void bochs_vga_writeb(struct bochs_device *bochs, u16 ioport, u8 val) +{ + if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df)) + return; + + if (bochs->mmio) { + int offset = ioport - 0x3c0 + 0x400; + + writeb(val, bochs->mmio + offset); + } else { + outb(val, ioport); + } +} + +static u8 bochs_vga_readb(struct bochs_device *bochs, u16 ioport) +{ + if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df)) + return 0xff; + + if (bochs->mmio) { + int offset = ioport - 0x3c0 + 0x400; + + return readb(bochs->mmio + offset); + } else { + return inb(ioport); + } +} + +static u16 bochs_dispi_read(struct bochs_device *bochs, u16 reg) +{ + u16 ret = 0; + + if (bochs->mmio) { + int offset = 0x500 + (reg << 1); + + ret = readw(bochs->mmio + offset); + } else { + outw(reg, VBE_DISPI_IOPORT_INDEX); + ret = inw(VBE_DISPI_IOPORT_DATA); + } + return ret; +} + +static void bochs_dispi_write(struct bochs_device *bochs, u16 reg, u16 val) +{ + if (bochs->mmio) { + int offset = 0x500 + (reg << 1); + + writew(val, bochs->mmio + offset); + } else { + outw(reg, VBE_DISPI_IOPORT_INDEX); + outw(val, VBE_DISPI_IOPORT_DATA); + } +} + +static void bochs_hw_set_big_endian(struct bochs_device *bochs) +{ + if (bochs->qext_size < 8) + return; + + writel(0xbebebebe, bochs->mmio + 0x604); +} + +static void bochs_hw_set_little_endian(struct bochs_device *bochs) +{ + if (bochs->qext_size < 8) + return; + + writel(0x1e1e1e1e, bochs->mmio + 0x604); +} + +#ifdef __BIG_ENDIAN +#define bochs_hw_set_native_endian(_b) bochs_hw_set_big_endian(_b) +#else +#define bochs_hw_set_native_endian(_b) bochs_hw_set_little_endian(_b) +#endif + +static int bochs_get_edid_block(void *data, u8 *buf, + unsigned int block, size_t len) +{ + struct bochs_device *bochs = data; + size_t i, start = block * EDID_LENGTH; + + if (start + len > 0x400 /* vga register offset */) + return -1; + + for (i = 0; i < len; i++) + buf[i] = readb(bochs->mmio + start + i); + + return 0; +} + +static int bochs_hw_load_edid(struct bochs_device *bochs) +{ + u8 header[8]; + + if (!bochs->mmio) + return -1; + + /* check header to detect whenever edid support is enabled in qemu */ + bochs_get_edid_block(bochs, header, 0, ARRAY_SIZE(header)); + if (drm_edid_header_is_valid(header) != 8) + return -1; + + kfree(bochs->edid); + bochs->edid = drm_do_get_edid(&bochs->connector, + bochs_get_edid_block, bochs); + if (bochs->edid == NULL) + return -1; + + return 0; +} + +static int bochs_hw_init(struct drm_device *dev) +{ + struct bochs_device *bochs = dev->dev_private; + struct pci_dev *pdev = to_pci_dev(dev->dev); + unsigned long addr, size, mem, ioaddr, iosize; + u16 id; + + if (pdev->resource[2].flags & IORESOURCE_MEM) { + /* mmio bar with vga and bochs registers present */ + if (pci_request_region(pdev, 2, "bochs-drm") != 0) { + DRM_ERROR("Cannot request mmio region\n"); + return -EBUSY; + } + ioaddr = pci_resource_start(pdev, 2); + iosize = pci_resource_len(pdev, 2); + bochs->mmio = ioremap(ioaddr, iosize); + if (bochs->mmio == NULL) { + DRM_ERROR("Cannot map mmio region\n"); + return -ENOMEM; + } + } else { + ioaddr = VBE_DISPI_IOPORT_INDEX; + iosize = 2; + if (!request_region(ioaddr, iosize, "bochs-drm")) { + DRM_ERROR("Cannot request ioports\n"); + return -EBUSY; + } + bochs->ioports = 1; + } + + id = bochs_dispi_read(bochs, VBE_DISPI_INDEX_ID); + mem = bochs_dispi_read(bochs, VBE_DISPI_INDEX_VIDEO_MEMORY_64K) + * 64 * 1024; + if ((id & 0xfff0) != VBE_DISPI_ID0) { + DRM_ERROR("ID mismatch\n"); + return -ENODEV; + } + + if ((pdev->resource[0].flags & IORESOURCE_MEM) == 0) + return -ENODEV; + addr = pci_resource_start(pdev, 0); + size = pci_resource_len(pdev, 0); + if (addr == 0) + return -ENODEV; + if (size != mem) { + DRM_ERROR("Size mismatch: pci=%ld, bochs=%ld\n", + size, mem); + size = min(size, mem); + } + + if (pci_request_region(pdev, 0, "bochs-drm") != 0) + DRM_WARN("Cannot request framebuffer, boot fb still active?\n"); + + bochs->fb_map = ioremap(addr, size); + if (bochs->fb_map == NULL) { + DRM_ERROR("Cannot map framebuffer\n"); + return -ENOMEM; + } + bochs->fb_base = addr; + bochs->fb_size = size; + + DRM_INFO("Found bochs VGA, ID 0x%x.\n", id); + DRM_INFO("Framebuffer size %ld kB @ 0x%lx, %s @ 0x%lx.\n", + size / 1024, addr, + bochs->ioports ? "ioports" : "mmio", + ioaddr); + + if (bochs->mmio && pdev->revision >= 2) { + bochs->qext_size = readl(bochs->mmio + 0x600); + if (bochs->qext_size < 4 || bochs->qext_size > iosize) { + bochs->qext_size = 0; + goto noext; + } + DRM_DEBUG("Found qemu ext regs, size %ld\n", + bochs->qext_size); + bochs_hw_set_native_endian(bochs); + } + +noext: + return 0; +} + +static void bochs_hw_fini(struct drm_device *dev) +{ + struct bochs_device *bochs = dev->dev_private; + + /* TODO: shot down existing vram mappings */ + + if (bochs->mmio) + iounmap(bochs->mmio); + if (bochs->ioports) + release_region(VBE_DISPI_IOPORT_INDEX, 2); + if (bochs->fb_map) + iounmap(bochs->fb_map); + pci_release_regions(to_pci_dev(dev->dev)); + kfree(bochs->edid); +} + +static void bochs_hw_blank(struct bochs_device *bochs, bool blank) +{ + DRM_DEBUG_DRIVER("hw_blank %d\n", blank); + /* discard ar_flip_flop */ + (void)bochs_vga_readb(bochs, VGA_IS1_RC); + /* blank or unblank; we need only update index and set 0x20 */ + bochs_vga_writeb(bochs, VGA_ATT_W, blank ? 0 : 0x20); +} + +static void bochs_hw_setmode(struct bochs_device *bochs, struct drm_display_mode *mode) +{ + int idx; + + if (!drm_dev_enter(bochs->dev, &idx)) + return; + + bochs->xres = mode->hdisplay; + bochs->yres = mode->vdisplay; + bochs->bpp = 32; + bochs->stride = mode->hdisplay * (bochs->bpp / 8); + bochs->yres_virtual = bochs->fb_size / bochs->stride; + + DRM_DEBUG_DRIVER("%dx%d @ %d bpp, vy %d\n", + bochs->xres, bochs->yres, bochs->bpp, + bochs->yres_virtual); + + bochs_hw_blank(bochs, false); + + bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, 0); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_BPP, bochs->bpp); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_XRES, bochs->xres); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_YRES, bochs->yres); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_BANK, 0); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, bochs->xres); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_HEIGHT, + bochs->yres_virtual); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, 0); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, 0); + + bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, + VBE_DISPI_ENABLED | VBE_DISPI_LFB_ENABLED); + + drm_dev_exit(idx); +} + +static void bochs_hw_setformat(struct bochs_device *bochs, const struct drm_format_info *format) +{ + int idx; + + if (!drm_dev_enter(bochs->dev, &idx)) + return; + + DRM_DEBUG_DRIVER("format %c%c%c%c\n", + (format->format >> 0) & 0xff, + (format->format >> 8) & 0xff, + (format->format >> 16) & 0xff, + (format->format >> 24) & 0xff); + + switch (format->format) { + case DRM_FORMAT_XRGB8888: + bochs_hw_set_little_endian(bochs); + break; + case DRM_FORMAT_BGRX8888: + bochs_hw_set_big_endian(bochs); + break; + default: + /* should not happen */ + DRM_ERROR("%s: Huh? Got framebuffer format 0x%x", + __func__, format->format); + break; + } + + drm_dev_exit(idx); +} + +static void bochs_hw_setbase(struct bochs_device *bochs, int x, int y, int stride, u64 addr) +{ + unsigned long offset; + unsigned int vx, vy, vwidth, idx; + + if (!drm_dev_enter(bochs->dev, &idx)) + return; + + bochs->stride = stride; + offset = (unsigned long)addr + + y * bochs->stride + + x * (bochs->bpp / 8); + vy = offset / bochs->stride; + vx = (offset % bochs->stride) * 8 / bochs->bpp; + vwidth = stride * 8 / bochs->bpp; + + DRM_DEBUG_DRIVER("x %d, y %d, addr %llx -> offset %lx, vx %d, vy %d\n", + x, y, addr, offset, vx, vy); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, vwidth); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, vx); + bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, vy); + + drm_dev_exit(idx); +} + +/* ---------------------------------------------------------------------- */ + +static 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); +} + +static void bochs_mm_fini(struct bochs_device *bochs) +{ + if (!bochs->dev->vram_mm) + return; + + drm_vram_helper_release_mm(bochs->dev); +} + +/* ---------------------------------------------------------------------- */ + +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); +} + +static 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, +}; + +static 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; +} + +/* ---------------------------------------------------------------------- */ +/* 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"); -- 2.32.0 ^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v2 2/3] drm/bochs: Use managed initialization for GEM VRAM helpers 2021-07-02 7:54 ` Thomas Zimmermann @ 2021-07-02 7:54 ` Thomas Zimmermann -1 siblings, 0 replies; 8+ messages in thread From: Thomas Zimmermann @ 2021-07-02 7:54 UTC (permalink / raw) To: kraxel, daniel, airlied, mripard, maarten.lankhorst Cc: Daniel Vetter, Thomas Zimmermann, dri-devel, virtualization Convert to managed GEM VRAM initialization and switch bochs to full autocleanup. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> --- drivers/gpu/drm/tiny/bochs.c | 43 +++++------------------------------- 1 file changed, 5 insertions(+), 38 deletions(-) diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c index 0700cdacc5d6..a2cfecfa8556 100644 --- a/drivers/gpu/drm/tiny/bochs.c +++ b/drivers/gpu/drm/tiny/bochs.c @@ -404,25 +404,6 @@ static void bochs_hw_setbase(struct bochs_device *bochs, int x, int y, int strid /* ---------------------------------------------------------------------- */ -static 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); -} - -static void bochs_mm_fini(struct bochs_device *bochs) -{ - if (!bochs->dev->vram_mm) - return; - - drm_vram_helper_release_mm(bochs->dev); -} - -/* ---------------------------------------------------------------------- */ - static const uint32_t bochs_formats[] = { DRM_FORMAT_XRGB8888, DRM_FORMAT_BGRX8888, @@ -581,13 +562,6 @@ static int bochs_kms_init(struct bochs_device *bochs) /* ---------------------------------------------------------------------- */ /* 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; @@ -601,21 +575,17 @@ static int bochs_load(struct drm_device *dev) ret = bochs_hw_init(dev); if (ret) - goto err; + return ret; - ret = bochs_mm_init(bochs); + ret = drmm_vram_helper_init(dev, bochs->fb_base, bochs->fb_size); if (ret) - goto err; + return ret; ret = bochs_kms_init(bochs); if (ret) - goto err; + return ret; return 0; - -err: - bochs_unload(dev); - return ret; } DEFINE_DRM_GEM_FOPS(bochs_fops); @@ -629,7 +599,6 @@ static const struct drm_driver bochs_driver = { .major = 1, .minor = 0, DRM_GEM_VRAM_DRIVER, - .release = bochs_unload, }; /* ---------------------------------------------------------------------- */ @@ -691,13 +660,11 @@ static int bochs_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent ret = drm_dev_register(dev, 0); if (ret) - goto err_unload; + goto err_free_dev; drm_fbdev_generic_setup(dev, 32); return ret; -err_unload: - bochs_unload(dev); err_free_dev: drm_dev_put(dev); return ret; -- 2.32.0 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization ^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v2 2/3] drm/bochs: Use managed initialization for GEM VRAM helpers @ 2021-07-02 7:54 ` Thomas Zimmermann 0 siblings, 0 replies; 8+ messages in thread From: Thomas Zimmermann @ 2021-07-02 7:54 UTC (permalink / raw) To: kraxel, daniel, airlied, mripard, maarten.lankhorst Cc: Daniel Vetter, Thomas Zimmermann, dri-devel, virtualization Convert to managed GEM VRAM initialization and switch bochs to full autocleanup. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> --- drivers/gpu/drm/tiny/bochs.c | 43 +++++------------------------------- 1 file changed, 5 insertions(+), 38 deletions(-) diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c index 0700cdacc5d6..a2cfecfa8556 100644 --- a/drivers/gpu/drm/tiny/bochs.c +++ b/drivers/gpu/drm/tiny/bochs.c @@ -404,25 +404,6 @@ static void bochs_hw_setbase(struct bochs_device *bochs, int x, int y, int strid /* ---------------------------------------------------------------------- */ -static 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); -} - -static void bochs_mm_fini(struct bochs_device *bochs) -{ - if (!bochs->dev->vram_mm) - return; - - drm_vram_helper_release_mm(bochs->dev); -} - -/* ---------------------------------------------------------------------- */ - static const uint32_t bochs_formats[] = { DRM_FORMAT_XRGB8888, DRM_FORMAT_BGRX8888, @@ -581,13 +562,6 @@ static int bochs_kms_init(struct bochs_device *bochs) /* ---------------------------------------------------------------------- */ /* 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; @@ -601,21 +575,17 @@ static int bochs_load(struct drm_device *dev) ret = bochs_hw_init(dev); if (ret) - goto err; + return ret; - ret = bochs_mm_init(bochs); + ret = drmm_vram_helper_init(dev, bochs->fb_base, bochs->fb_size); if (ret) - goto err; + return ret; ret = bochs_kms_init(bochs); if (ret) - goto err; + return ret; return 0; - -err: - bochs_unload(dev); - return ret; } DEFINE_DRM_GEM_FOPS(bochs_fops); @@ -629,7 +599,6 @@ static const struct drm_driver bochs_driver = { .major = 1, .minor = 0, DRM_GEM_VRAM_DRIVER, - .release = bochs_unload, }; /* ---------------------------------------------------------------------- */ @@ -691,13 +660,11 @@ static int bochs_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent ret = drm_dev_register(dev, 0); if (ret) - goto err_unload; + goto err_free_dev; drm_fbdev_generic_setup(dev, 32); return ret; -err_unload: - bochs_unload(dev); err_free_dev: drm_dev_put(dev); return ret; -- 2.32.0 ^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v2 3/3] drm/vram-helper: Unexport drm_vram_helper_{alloc, release}_mm() 2021-07-02 7:54 ` Thomas Zimmermann @ 2021-07-02 7:54 ` Thomas Zimmermann -1 siblings, 0 replies; 8+ messages in thread From: Thomas Zimmermann @ 2021-07-02 7:54 UTC (permalink / raw) To: kraxel, daniel, airlied, mripard, maarten.lankhorst Cc: Daniel Vetter, Thomas Zimmermann, dri-devel, virtualization All GEM-VRAM-based drivers use auto-cleanup via drmm_vram_helper_init(). Unexport the manual APIs and make them internal implementation. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> --- drivers/gpu/drm/drm_gem_vram_helper.c | 9 +++------ include/drm/drm_gem_vram_helper.h | 4 ---- 2 files changed, 3 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c index 2a1229b8364e..1e9b82e51a07 100644 --- a/drivers/gpu/drm/drm_gem_vram_helper.c +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -1012,9 +1012,8 @@ static void drm_vram_mm_cleanup(struct drm_vram_mm *vmm) * Helpers for integration with struct drm_device */ -/* deprecated; use drmm_vram_mm_init() */ -struct drm_vram_mm *drm_vram_helper_alloc_mm( - struct drm_device *dev, uint64_t vram_base, size_t vram_size) +static struct drm_vram_mm *drm_vram_helper_alloc_mm(struct drm_device *dev, uint64_t vram_base, + size_t vram_size) { int ret; @@ -1036,9 +1035,8 @@ struct drm_vram_mm *drm_vram_helper_alloc_mm( dev->vram_mm = NULL; return ERR_PTR(ret); } -EXPORT_SYMBOL(drm_vram_helper_alloc_mm); -void drm_vram_helper_release_mm(struct drm_device *dev) +static void drm_vram_helper_release_mm(struct drm_device *dev) { if (!dev->vram_mm) return; @@ -1047,7 +1045,6 @@ void drm_vram_helper_release_mm(struct drm_device *dev) kfree(dev->vram_mm); dev->vram_mm = NULL; } -EXPORT_SYMBOL(drm_vram_helper_release_mm); static void drm_vram_mm_release(struct drm_device *dev, void *ptr) { diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h index f48d181c824b..d3cf06c9af65 100644 --- a/include/drm/drm_gem_vram_helper.h +++ b/include/drm/drm_gem_vram_helper.h @@ -204,10 +204,6 @@ void drm_vram_mm_debugfs_init(struct drm_minor *minor); * Helpers for integration with struct drm_device */ -struct drm_vram_mm *drm_vram_helper_alloc_mm( - struct drm_device *dev, uint64_t vram_base, size_t vram_size); -void drm_vram_helper_release_mm(struct drm_device *dev); - int drmm_vram_helper_init(struct drm_device *dev, uint64_t vram_base, size_t vram_size); -- 2.32.0 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization ^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v2 3/3] drm/vram-helper: Unexport drm_vram_helper_{alloc, release}_mm() @ 2021-07-02 7:54 ` Thomas Zimmermann 0 siblings, 0 replies; 8+ messages in thread From: Thomas Zimmermann @ 2021-07-02 7:54 UTC (permalink / raw) To: kraxel, daniel, airlied, mripard, maarten.lankhorst Cc: Daniel Vetter, Thomas Zimmermann, dri-devel, virtualization All GEM-VRAM-based drivers use auto-cleanup via drmm_vram_helper_init(). Unexport the manual APIs and make them internal implementation. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> --- drivers/gpu/drm/drm_gem_vram_helper.c | 9 +++------ include/drm/drm_gem_vram_helper.h | 4 ---- 2 files changed, 3 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c index 2a1229b8364e..1e9b82e51a07 100644 --- a/drivers/gpu/drm/drm_gem_vram_helper.c +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -1012,9 +1012,8 @@ static void drm_vram_mm_cleanup(struct drm_vram_mm *vmm) * Helpers for integration with struct drm_device */ -/* deprecated; use drmm_vram_mm_init() */ -struct drm_vram_mm *drm_vram_helper_alloc_mm( - struct drm_device *dev, uint64_t vram_base, size_t vram_size) +static struct drm_vram_mm *drm_vram_helper_alloc_mm(struct drm_device *dev, uint64_t vram_base, + size_t vram_size) { int ret; @@ -1036,9 +1035,8 @@ struct drm_vram_mm *drm_vram_helper_alloc_mm( dev->vram_mm = NULL; return ERR_PTR(ret); } -EXPORT_SYMBOL(drm_vram_helper_alloc_mm); -void drm_vram_helper_release_mm(struct drm_device *dev) +static void drm_vram_helper_release_mm(struct drm_device *dev) { if (!dev->vram_mm) return; @@ -1047,7 +1045,6 @@ void drm_vram_helper_release_mm(struct drm_device *dev) kfree(dev->vram_mm); dev->vram_mm = NULL; } -EXPORT_SYMBOL(drm_vram_helper_release_mm); static void drm_vram_mm_release(struct drm_device *dev, void *ptr) { diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h index f48d181c824b..d3cf06c9af65 100644 --- a/include/drm/drm_gem_vram_helper.h +++ b/include/drm/drm_gem_vram_helper.h @@ -204,10 +204,6 @@ void drm_vram_mm_debugfs_init(struct drm_minor *minor); * Helpers for integration with struct drm_device */ -struct drm_vram_mm *drm_vram_helper_alloc_mm( - struct drm_device *dev, uint64_t vram_base, size_t vram_size); -void drm_vram_helper_release_mm(struct drm_device *dev); - int drmm_vram_helper_init(struct drm_device *dev, uint64_t vram_base, size_t vram_size); -- 2.32.0 ^ permalink raw reply related [flat|nested] 8+ messages in thread
end of thread, other threads:[~2021-07-02 7:54 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
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2021-07-02 7:54 [PATCH v2 0/3] drm/bochs: Move to tiny/ and simplify Thomas Zimmermann
2021-07-02 7:54 ` Thomas Zimmermann
2021-07-02 7:54 ` [PATCH v2 1/3] drm/bochs: Move to tiny/ Thomas Zimmermann
2021-07-02 7:54 ` Thomas Zimmermann
2021-07-02 7:54 ` [PATCH v2 2/3] drm/bochs: Use managed initialization for GEM VRAM helpers Thomas Zimmermann
2021-07-02 7:54 ` Thomas Zimmermann
2021-07-02 7:54 ` [PATCH v2 3/3] drm/vram-helper: Unexport drm_vram_helper_{alloc, release}_mm() Thomas Zimmermann
2021-07-02 7:54 ` Thomas Zimmermann
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