drivers/gpu/drm/cirrus/cirrus_drv.h

   1 /*
   2  * Copyright 2012 Red Hat
   3  *
   4  * This file is subject to the terms and conditions of the GNU General
   5  * Public License version 2. See the file COPYING in the main
   6  * directory of this archive for more details.
   7  *
   8  * Authors: Matthew Garrett
   9  *          Dave Airlie
  10  */
  11 #ifndef __CIRRUS_DRV_H__
  12 #define __CIRRUS_DRV_H__
  13
  14 #include <video/vga.h>
  15
  16 #include <drm/drm_encoder.h>
  17 #include <drm/drm_fb_helper.h>
  18
  19 #include <drm/ttm/ttm_bo_api.h>
  20 #include <drm/ttm/ttm_bo_driver.h>
  21 #include <drm/ttm/ttm_placement.h>
  22 #include <drm/ttm/ttm_memory.h>
  23 #include <drm/ttm/ttm_module.h>
  24
  25 #include <drm/drm_gem.h>
  26
  27 #define DRIVER_AUTHOR           "Matthew Garrett"
  28
  29 #define DRIVER_NAME             "cirrus"
  30 #define DRIVER_DESC             "qemu Cirrus emulation"
  31 #define DRIVER_DATE             "20110418"
  32
  33 #define DRIVER_MAJOR            1
  34 #define DRIVER_MINOR            0
  35 #define DRIVER_PATCHLEVEL       0
  36
  37 #define CIRRUSFB_CONN_LIMIT 1
  38
  39 #define RREG8(reg) ioread8(((void __iomem *)cdev->rmmio) + (reg))
  40 #define WREG8(reg, v) iowrite8(v, ((void __iomem *)cdev->rmmio) + (reg))
  41 #define RREG32(reg) ioread32(((void __iomem *)cdev->rmmio) + (reg))
  42 #define WREG32(reg, v) iowrite32(v, ((void __iomem *)cdev->rmmio) + (reg))
  43
  44 #define SEQ_INDEX 4
  45 #define SEQ_DATA 5
  46
  47 #define WREG_SEQ(reg, v)                                        \
  48         do {                                                    \
  49                 WREG8(SEQ_INDEX, reg);                          \
  50                 WREG8(SEQ_DATA, v);                             \
  51         } while (0)                                             \
  52
  53 #define CRT_INDEX 0x14
  54 #define CRT_DATA 0x15
  55
  56 #define WREG_CRT(reg, v)                                        \
  57         do {                                                    \
  58                 WREG8(CRT_INDEX, reg);                          \
  59                 WREG8(CRT_DATA, v);                             \
  60         } while (0)                                             \
  61
  62 #define GFX_INDEX 0xe
  63 #define GFX_DATA 0xf
  64
  65 #define WREG_GFX(reg, v)                                        \
  66         do {                                                    \
  67                 WREG8(GFX_INDEX, reg);                          \
  68                 WREG8(GFX_DATA, v);                             \
  69         } while (0)                                             \
  70
  71 /*
  72  * Cirrus has a "hidden" DAC register that can be accessed by writing to
  73  * the pixel mask register to reset the state, then reading from the register
  74  * four times. The next write will then pass to the DAC
  75  */
  76 #define VGA_DAC_MASK 0x6
  77
  78 #define WREG_HDR(v)                                             \
  79         do {                                                    \
  80                 RREG8(VGA_DAC_MASK);                                    \
  81                 RREG8(VGA_DAC_MASK);                                    \
  82                 RREG8(VGA_DAC_MASK);                                    \
  83                 RREG8(VGA_DAC_MASK);                                    \
  84                 WREG8(VGA_DAC_MASK, v);                                 \
  85         } while (0)                                             \
  86
  87
  88 #define CIRRUS_MAX_FB_HEIGHT 4096
  89 #define CIRRUS_MAX_FB_WIDTH 4096
  90
  91 #define CIRRUS_DPMS_CLEARED (-1)
  92
  93 #define to_cirrus_crtc(x) container_of(x, struct cirrus_crtc, base)
  94 #define to_cirrus_encoder(x) container_of(x, struct cirrus_encoder, base)
  95
  96 struct cirrus_crtc {
  97         struct drm_crtc                 base;
  98         int                             last_dpms;
  99         bool                            enabled;
 100 };
 101
 102 struct cirrus_fbdev;
 103 struct cirrus_mode_info {
 104         bool                            mode_config_initialized;
 105         struct cirrus_crtc              *crtc;
 106         /* pointer to fbdev info structure */
 107         struct cirrus_fbdev             *gfbdev;
 108 };
 109
 110 struct cirrus_encoder {
 111         struct drm_encoder              base;
 112         int                             last_dpms;
 113 };
 114
 115 struct cirrus_connector {
 116         struct drm_connector            base;
 117 };
 118
 119 struct cirrus_mc {
 120         resource_size_t                 vram_size;
 121         resource_size_t                 vram_base;
 122 };
 123
 124 struct cirrus_device {
 125         struct drm_device               *dev;
 126         unsigned long                   flags;
 127
 128         resource_size_t                 rmmio_base;
 129         resource_size_t                 rmmio_size;
 130         void __iomem                    *rmmio;
 131
 132         struct cirrus_mc                        mc;
 133         struct cirrus_mode_info         mode_info;
 134
 135         int                             num_crtc;
 136         int fb_mtrr;
 137
 138         struct {
 139                 struct drm_global_reference mem_global_ref;
 140                 struct ttm_bo_global_ref bo_global_ref;
 141                 struct ttm_bo_device bdev;
 142         } ttm;
 143         bool mm_inited;
 144 };
 145
 146
 147 struct cirrus_fbdev {
 148         struct drm_fb_helper helper;
 149         struct drm_framebuffer *gfb;
 150         void *sysram;
 151         int size;
 152         int x1, y1, x2, y2; /* dirty rect */
 153         spinlock_t dirty_lock;
 154 };
 155
 156 struct cirrus_bo {
 157         struct ttm_buffer_object bo;
 158         struct ttm_placement placement;
 159         struct ttm_bo_kmap_obj kmap;
 160         struct drm_gem_object gem;
 161         struct ttm_place placements[3];
 162         int pin_count;
 163 };
 164 #define gem_to_cirrus_bo(gobj) container_of((gobj), struct cirrus_bo, gem)
 165
 166 static inline struct cirrus_bo *
 167 cirrus_bo(struct ttm_buffer_object *bo)
 168 {
 169         return container_of(bo, struct cirrus_bo, bo);
 170 }
 171
 172
 173 #define to_cirrus_obj(x) container_of(x, struct cirrus_gem_object, base)
 174 #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
 175
 176                                 /* cirrus_main.c */
 177 int cirrus_device_init(struct cirrus_device *cdev,
 178                       struct drm_device *ddev,
 179                       struct pci_dev *pdev,
 180                       uint32_t flags);
 181 void cirrus_device_fini(struct cirrus_device *cdev);
 182 void cirrus_gem_free_object(struct drm_gem_object *obj);
 183 int cirrus_dumb_mmap_offset(struct drm_file *file,
 184                             struct drm_device *dev,
 185                             uint32_t handle,
 186                             uint64_t *offset);
 187 int cirrus_gem_create(struct drm_device *dev,
 188                    u32 size, bool iskernel,
 189                       struct drm_gem_object **obj);
 190 int cirrus_dumb_create(struct drm_file *file,
 191                     struct drm_device *dev,
 192                        struct drm_mode_create_dumb *args);
 193
 194 int cirrus_framebuffer_init(struct drm_device *dev,
 195                             struct drm_framebuffer *gfb,
 196                             const struct drm_mode_fb_cmd2 *mode_cmd,
 197                             struct drm_gem_object *obj);
 198
 199 bool cirrus_check_framebuffer(struct cirrus_device *cdev, int width, int height,
 200                               int bpp, int pitch);
 201
 202                                 /* cirrus_display.c */
 203 int cirrus_modeset_init(struct cirrus_device *cdev);
 204 void cirrus_modeset_fini(struct cirrus_device *cdev);
 205
 206                                 /* cirrus_fbdev.c */
 207 int cirrus_fbdev_init(struct cirrus_device *cdev);
 208 void cirrus_fbdev_fini(struct cirrus_device *cdev);
 209
 210
 211
 212                                 /* cirrus_irq.c */
 213 void cirrus_driver_irq_preinstall(struct drm_device *dev);
 214 int cirrus_driver_irq_postinstall(struct drm_device *dev);
 215 void cirrus_driver_irq_uninstall(struct drm_device *dev);
 216 irqreturn_t cirrus_driver_irq_handler(int irq, void *arg);
 217
 218                                 /* cirrus_kms.c */
 219 int cirrus_driver_load(struct drm_device *dev, unsigned long flags);
 220 void cirrus_driver_unload(struct drm_device *dev);
 221 extern struct drm_ioctl_desc cirrus_ioctls[];
 222 extern int cirrus_max_ioctl;
 223
 224 int cirrus_mm_init(struct cirrus_device *cirrus);
 225 void cirrus_mm_fini(struct cirrus_device *cirrus);
 226 void cirrus_ttm_placement(struct cirrus_bo *bo, int domain);
 227 int cirrus_bo_create(struct drm_device *dev, int size, int align,
 228                      uint32_t flags, struct cirrus_bo **pcirrusbo);
 229 int cirrus_mmap(struct file *filp, struct vm_area_struct *vma);
 230
 231 static inline int cirrus_bo_reserve(struct cirrus_bo *bo, bool no_wait)
 232 {
 233         int ret;
 234
 235         ret = ttm_bo_reserve(&bo->bo, true, no_wait, NULL);
 236         if (ret) {
 237                 if (ret != -ERESTARTSYS && ret != -EBUSY)
 238                         DRM_ERROR("reserve failed %p\n", bo);
 239                 return ret;
 240         }
 241         return 0;
 242 }
 243
 244 static inline void cirrus_bo_unreserve(struct cirrus_bo *bo)
 245 {
 246         ttm_bo_unreserve(&bo->bo);
 247 }
 248
 249 int cirrus_bo_push_sysram(struct cirrus_bo *bo);
 250 int cirrus_bo_pin(struct cirrus_bo *bo, u32 pl_flag, u64 *gpu_addr);
 251
 252 extern int cirrus_bpp;
 253
 254 #endif                          /* __CIRRUS_DRV_H__ */