167 lines
4.6 KiB
C
Executable file
167 lines
4.6 KiB
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/io.h>
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#include <linux/console.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_encoder.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_gem.h>
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#include <drm/ttm/ttm_bo_driver.h>
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#include <drm/ttm/ttm_page_alloc.h>
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/* ---------------------------------------------------------------------- */
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#define VBE_DISPI_IOPORT_INDEX 0x01CE
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#define VBE_DISPI_IOPORT_DATA 0x01CF
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#define VBE_DISPI_INDEX_ID 0x0
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#define VBE_DISPI_INDEX_XRES 0x1
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#define VBE_DISPI_INDEX_YRES 0x2
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#define VBE_DISPI_INDEX_BPP 0x3
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#define VBE_DISPI_INDEX_ENABLE 0x4
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#define VBE_DISPI_INDEX_BANK 0x5
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#define VBE_DISPI_INDEX_VIRT_WIDTH 0x6
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#define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7
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#define VBE_DISPI_INDEX_X_OFFSET 0x8
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#define VBE_DISPI_INDEX_Y_OFFSET 0x9
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#define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa
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#define VBE_DISPI_ID0 0xB0C0
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#define VBE_DISPI_ID1 0xB0C1
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#define VBE_DISPI_ID2 0xB0C2
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#define VBE_DISPI_ID3 0xB0C3
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#define VBE_DISPI_ID4 0xB0C4
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#define VBE_DISPI_ID5 0xB0C5
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#define VBE_DISPI_DISABLED 0x00
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#define VBE_DISPI_ENABLED 0x01
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#define VBE_DISPI_GETCAPS 0x02
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#define VBE_DISPI_8BIT_DAC 0x20
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#define VBE_DISPI_LFB_ENABLED 0x40
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#define VBE_DISPI_NOCLEARMEM 0x80
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/* ---------------------------------------------------------------------- */
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enum bochs_types {
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BOCHS_QEMU_STDVGA,
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BOCHS_UNKNOWN,
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};
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struct bochs_framebuffer {
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struct drm_framebuffer base;
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struct drm_gem_object *obj;
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};
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struct bochs_device {
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/* hw */
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void __iomem *mmio;
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int ioports;
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void __iomem *fb_map;
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unsigned long fb_base;
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unsigned long fb_size;
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/* mode */
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u16 xres;
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u16 yres;
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u16 yres_virtual;
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u32 stride;
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u32 bpp;
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/* drm */
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struct drm_device *dev;
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struct drm_crtc crtc;
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struct drm_encoder encoder;
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struct drm_connector connector;
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bool mode_config_initialized;
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/* ttm */
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struct {
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struct drm_global_reference mem_global_ref;
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struct ttm_bo_global_ref bo_global_ref;
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struct ttm_bo_device bdev;
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bool initialized;
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} ttm;
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/* fbdev */
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struct {
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struct bochs_framebuffer gfb;
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struct drm_fb_helper helper;
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int size;
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bool initialized;
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} fb;
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};
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#define to_bochs_framebuffer(x) container_of(x, struct bochs_framebuffer, base)
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struct bochs_bo {
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struct ttm_buffer_object bo;
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struct ttm_placement placement;
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struct ttm_bo_kmap_obj kmap;
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struct drm_gem_object gem;
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struct ttm_place placements[3];
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int pin_count;
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};
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static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo)
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{
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return container_of(bo, struct bochs_bo, bo);
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}
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static inline struct bochs_bo *gem_to_bochs_bo(struct drm_gem_object *gem)
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{
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return container_of(gem, struct bochs_bo, gem);
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}
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#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
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static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
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{
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return drm_vma_node_offset_addr(&bo->bo.vma_node);
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}
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/* ---------------------------------------------------------------------- */
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/* bochs_hw.c */
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int bochs_hw_init(struct drm_device *dev, uint32_t flags);
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void bochs_hw_fini(struct drm_device *dev);
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void bochs_hw_setmode(struct bochs_device *bochs,
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struct drm_display_mode *mode);
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void bochs_hw_setbase(struct bochs_device *bochs,
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int x, int y, u64 addr);
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/* bochs_mm.c */
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int bochs_mm_init(struct bochs_device *bochs);
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void bochs_mm_fini(struct bochs_device *bochs);
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int bochs_mmap(struct file *filp, struct vm_area_struct *vma);
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int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
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struct drm_gem_object **obj);
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int bochs_gem_init_object(struct drm_gem_object *obj);
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void bochs_gem_free_object(struct drm_gem_object *obj);
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int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
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struct drm_mode_create_dumb *args);
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int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
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uint32_t handle, uint64_t *offset);
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int bochs_framebuffer_init(struct drm_device *dev,
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struct bochs_framebuffer *gfb,
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const struct drm_mode_fb_cmd2 *mode_cmd,
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struct drm_gem_object *obj);
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int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag, u64 *gpu_addr);
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int bochs_bo_unpin(struct bochs_bo *bo);
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extern const struct drm_mode_config_funcs bochs_mode_funcs;
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/* bochs_kms.c */
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int bochs_kms_init(struct bochs_device *bochs);
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void bochs_kms_fini(struct bochs_device *bochs);
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/* bochs_fbdev.c */
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int bochs_fbdev_init(struct bochs_device *bochs);
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void bochs_fbdev_fini(struct bochs_device *bochs);
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