Christopher Harvey | a080db9 | 2013-06-05 15:24:26 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 Matrox Graphics |
| 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 | * Author: Christopher Harvey <charvey@matrox.com> |
| 9 | */ |
| 10 | |
| 11 | #include <drm/drmP.h> |
| 12 | #include "mgag200_drv.h" |
| 13 | |
| 14 | static bool warn_transparent = true; |
| 15 | static bool warn_palette = true; |
| 16 | |
| 17 | /* |
| 18 | Hide the cursor off screen. We can't disable the cursor hardware because it |
| 19 | takes too long to re-activate and causes momentary corruption |
| 20 | */ |
| 21 | static void mga_hide_cursor(struct mga_device *mdev) |
| 22 | { |
| 23 | WREG8(MGA_CURPOSXL, 0); |
| 24 | WREG8(MGA_CURPOSXH, 0); |
Dave Airlie | 53dac83 | 2014-01-16 14:28:22 +1000 | [diff] [blame] | 25 | if (mdev->cursor.pixels_1->pin_count) |
| 26 | mgag200_bo_unpin(mdev->cursor.pixels_1); |
| 27 | if (mdev->cursor.pixels_2->pin_count) |
| 28 | mgag200_bo_unpin(mdev->cursor.pixels_2); |
Christopher Harvey | a080db9 | 2013-06-05 15:24:26 -0400 | [diff] [blame] | 29 | } |
| 30 | |
| 31 | int mga_crtc_cursor_set(struct drm_crtc *crtc, |
| 32 | struct drm_file *file_priv, |
| 33 | uint32_t handle, |
| 34 | uint32_t width, |
| 35 | uint32_t height) |
| 36 | { |
Dave Airlie | 53dac83 | 2014-01-16 14:28:22 +1000 | [diff] [blame] | 37 | struct drm_device *dev = crtc->dev; |
Christopher Harvey | a080db9 | 2013-06-05 15:24:26 -0400 | [diff] [blame] | 38 | struct mga_device *mdev = (struct mga_device *)dev->dev_private; |
| 39 | struct mgag200_bo *pixels_1 = mdev->cursor.pixels_1; |
| 40 | struct mgag200_bo *pixels_2 = mdev->cursor.pixels_2; |
| 41 | struct mgag200_bo *pixels_current = mdev->cursor.pixels_current; |
| 42 | struct mgag200_bo *pixels_prev = mdev->cursor.pixels_prev; |
| 43 | struct drm_gem_object *obj; |
| 44 | struct mgag200_bo *bo = NULL; |
| 45 | int ret = 0; |
| 46 | unsigned int i, row, col; |
| 47 | uint32_t colour_set[16]; |
| 48 | uint32_t *next_space = &colour_set[0]; |
| 49 | uint32_t *palette_iter; |
| 50 | uint32_t this_colour; |
| 51 | bool found = false; |
| 52 | int colour_count = 0; |
| 53 | u64 gpu_addr; |
| 54 | u8 reg_index; |
| 55 | u8 this_row[48]; |
| 56 | |
| 57 | if (!pixels_1 || !pixels_2) { |
| 58 | WREG8(MGA_CURPOSXL, 0); |
| 59 | WREG8(MGA_CURPOSXH, 0); |
| 60 | return -ENOTSUPP; /* Didn't allocate space for cursors */ |
| 61 | } |
| 62 | |
| 63 | if ((width != 64 || height != 64) && handle) { |
| 64 | WREG8(MGA_CURPOSXL, 0); |
| 65 | WREG8(MGA_CURPOSXH, 0); |
| 66 | return -EINVAL; |
| 67 | } |
| 68 | |
| 69 | BUG_ON(pixels_1 != pixels_current && pixels_1 != pixels_prev); |
| 70 | BUG_ON(pixels_2 != pixels_current && pixels_2 != pixels_prev); |
| 71 | BUG_ON(pixels_current == pixels_prev); |
| 72 | |
Wang, Rui Y | f6619ef | 2015-11-18 23:00:53 +0800 | [diff] [blame] | 73 | if (!handle || !file_priv) { |
| 74 | mga_hide_cursor(mdev); |
| 75 | return 0; |
| 76 | } |
| 77 | |
Daniel Vetter | bf89209 | 2015-07-09 23:32:39 +0200 | [diff] [blame] | 78 | obj = drm_gem_object_lookup(dev, file_priv, handle); |
| 79 | if (!obj) |
| 80 | return -ENOENT; |
| 81 | |
Christopher Harvey | a080db9 | 2013-06-05 15:24:26 -0400 | [diff] [blame] | 82 | ret = mgag200_bo_reserve(pixels_1, true); |
| 83 | if (ret) { |
| 84 | WREG8(MGA_CURPOSXL, 0); |
| 85 | WREG8(MGA_CURPOSXH, 0); |
Daniel Vetter | bf89209 | 2015-07-09 23:32:39 +0200 | [diff] [blame] | 86 | goto out_unref; |
Christopher Harvey | a080db9 | 2013-06-05 15:24:26 -0400 | [diff] [blame] | 87 | } |
| 88 | ret = mgag200_bo_reserve(pixels_2, true); |
| 89 | if (ret) { |
| 90 | WREG8(MGA_CURPOSXL, 0); |
| 91 | WREG8(MGA_CURPOSXH, 0); |
| 92 | mgag200_bo_unreserve(pixels_1); |
Daniel Vetter | bf89209 | 2015-07-09 23:32:39 +0200 | [diff] [blame] | 93 | goto out_unreserve1; |
Christopher Harvey | a080db9 | 2013-06-05 15:24:26 -0400 | [diff] [blame] | 94 | } |
| 95 | |
Christopher Harvey | a080db9 | 2013-06-05 15:24:26 -0400 | [diff] [blame] | 96 | /* Move cursor buffers into VRAM if they aren't already */ |
| 97 | if (!pixels_1->pin_count) { |
| 98 | ret = mgag200_bo_pin(pixels_1, TTM_PL_FLAG_VRAM, |
| 99 | &mdev->cursor.pixels_1_gpu_addr); |
| 100 | if (ret) |
| 101 | goto out1; |
| 102 | } |
| 103 | if (!pixels_2->pin_count) { |
| 104 | ret = mgag200_bo_pin(pixels_2, TTM_PL_FLAG_VRAM, |
| 105 | &mdev->cursor.pixels_2_gpu_addr); |
| 106 | if (ret) { |
| 107 | mgag200_bo_unpin(pixels_1); |
| 108 | goto out1; |
| 109 | } |
| 110 | } |
| 111 | |
Christopher Harvey | a080db9 | 2013-06-05 15:24:26 -0400 | [diff] [blame] | 112 | bo = gem_to_mga_bo(obj); |
| 113 | ret = mgag200_bo_reserve(bo, true); |
| 114 | if (ret) { |
| 115 | dev_err(&dev->pdev->dev, "failed to reserve user bo\n"); |
| 116 | goto out1; |
| 117 | } |
| 118 | if (!bo->kmap.virtual) { |
| 119 | ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap); |
| 120 | if (ret) { |
| 121 | dev_err(&dev->pdev->dev, "failed to kmap user buffer updates\n"); |
| 122 | goto out2; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | memset(&colour_set[0], 0, sizeof(uint32_t)*16); |
| 127 | /* width*height*4 = 16384 */ |
| 128 | for (i = 0; i < 16384; i += 4) { |
| 129 | this_colour = ioread32(bo->kmap.virtual + i); |
| 130 | /* No transparency */ |
| 131 | if (this_colour>>24 != 0xff && |
| 132 | this_colour>>24 != 0x0) { |
| 133 | if (warn_transparent) { |
| 134 | dev_info(&dev->pdev->dev, "Video card doesn't support cursors with partial transparency.\n"); |
| 135 | dev_info(&dev->pdev->dev, "Not enabling hardware cursor.\n"); |
| 136 | warn_transparent = false; /* Only tell the user once. */ |
| 137 | } |
| 138 | ret = -EINVAL; |
| 139 | goto out3; |
| 140 | } |
| 141 | /* Don't need to store transparent pixels as colours */ |
| 142 | if (this_colour>>24 == 0x0) |
| 143 | continue; |
| 144 | found = false; |
| 145 | for (palette_iter = &colour_set[0]; palette_iter != next_space; palette_iter++) { |
| 146 | if (*palette_iter == this_colour) { |
| 147 | found = true; |
| 148 | break; |
| 149 | } |
| 150 | } |
| 151 | if (found) |
| 152 | continue; |
| 153 | /* We only support 4bit paletted cursors */ |
| 154 | if (colour_count >= 16) { |
| 155 | if (warn_palette) { |
| 156 | dev_info(&dev->pdev->dev, "Video card only supports cursors with up to 16 colours.\n"); |
| 157 | dev_info(&dev->pdev->dev, "Not enabling hardware cursor.\n"); |
| 158 | warn_palette = false; /* Only tell the user once. */ |
| 159 | } |
| 160 | ret = -EINVAL; |
| 161 | goto out3; |
| 162 | } |
| 163 | *next_space = this_colour; |
| 164 | next_space++; |
| 165 | colour_count++; |
| 166 | } |
| 167 | |
| 168 | /* Program colours from cursor icon into palette */ |
| 169 | for (i = 0; i < colour_count; i++) { |
| 170 | if (i <= 2) |
| 171 | reg_index = 0x8 + i*0x4; |
| 172 | else |
| 173 | reg_index = 0x60 + i*0x3; |
| 174 | WREG_DAC(reg_index, colour_set[i] & 0xff); |
| 175 | WREG_DAC(reg_index+1, colour_set[i]>>8 & 0xff); |
| 176 | WREG_DAC(reg_index+2, colour_set[i]>>16 & 0xff); |
| 177 | BUG_ON((colour_set[i]>>24 & 0xff) != 0xff); |
| 178 | } |
| 179 | |
| 180 | /* Map up-coming buffer to write colour indices */ |
| 181 | if (!pixels_prev->kmap.virtual) { |
| 182 | ret = ttm_bo_kmap(&pixels_prev->bo, 0, |
| 183 | pixels_prev->bo.num_pages, |
| 184 | &pixels_prev->kmap); |
| 185 | if (ret) { |
| 186 | dev_err(&dev->pdev->dev, "failed to kmap cursor updates\n"); |
| 187 | goto out3; |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | /* now write colour indices into hardware cursor buffer */ |
| 192 | for (row = 0; row < 64; row++) { |
| 193 | memset(&this_row[0], 0, 48); |
| 194 | for (col = 0; col < 64; col++) { |
| 195 | this_colour = ioread32(bo->kmap.virtual + 4*(col + 64*row)); |
| 196 | /* write transparent pixels */ |
| 197 | if (this_colour>>24 == 0x0) { |
| 198 | this_row[47 - col/8] |= 0x80>>(col%8); |
| 199 | continue; |
| 200 | } |
| 201 | |
| 202 | /* write colour index here */ |
| 203 | for (i = 0; i < colour_count; i++) { |
| 204 | if (colour_set[i] == this_colour) { |
| 205 | if (col % 2) |
| 206 | this_row[col/2] |= i<<4; |
| 207 | else |
| 208 | this_row[col/2] |= i; |
| 209 | break; |
| 210 | } |
| 211 | } |
| 212 | } |
| 213 | memcpy_toio(pixels_prev->kmap.virtual + row*48, &this_row[0], 48); |
| 214 | } |
| 215 | |
| 216 | /* Program gpu address of cursor buffer */ |
| 217 | if (pixels_prev == pixels_1) |
| 218 | gpu_addr = mdev->cursor.pixels_1_gpu_addr; |
| 219 | else |
| 220 | gpu_addr = mdev->cursor.pixels_2_gpu_addr; |
| 221 | WREG_DAC(MGA1064_CURSOR_BASE_ADR_LOW, (u8)((gpu_addr>>10) & 0xff)); |
| 222 | WREG_DAC(MGA1064_CURSOR_BASE_ADR_HI, (u8)((gpu_addr>>18) & 0x3f)); |
| 223 | |
| 224 | /* Adjust cursor control register to turn on the cursor */ |
| 225 | WREG_DAC(MGA1064_CURSOR_CTL, 4); /* 16-colour palletized cursor mode */ |
| 226 | |
| 227 | /* Now swap internal buffer pointers */ |
| 228 | if (mdev->cursor.pixels_1 == mdev->cursor.pixels_prev) { |
| 229 | mdev->cursor.pixels_prev = mdev->cursor.pixels_2; |
| 230 | mdev->cursor.pixels_current = mdev->cursor.pixels_1; |
| 231 | } else if (mdev->cursor.pixels_1 == mdev->cursor.pixels_current) { |
| 232 | mdev->cursor.pixels_prev = mdev->cursor.pixels_1; |
| 233 | mdev->cursor.pixels_current = mdev->cursor.pixels_2; |
| 234 | } else { |
| 235 | BUG(); |
| 236 | } |
| 237 | ret = 0; |
| 238 | |
| 239 | ttm_bo_kunmap(&pixels_prev->kmap); |
| 240 | out3: |
| 241 | ttm_bo_kunmap(&bo->kmap); |
| 242 | out2: |
| 243 | mgag200_bo_unreserve(bo); |
| 244 | out1: |
| 245 | if (ret) |
| 246 | mga_hide_cursor(mdev); |
| 247 | mgag200_bo_unreserve(pixels_1); |
Daniel Vetter | bf89209 | 2015-07-09 23:32:39 +0200 | [diff] [blame] | 248 | out_unreserve1: |
Christopher Harvey | a080db9 | 2013-06-05 15:24:26 -0400 | [diff] [blame] | 249 | mgag200_bo_unreserve(pixels_2); |
Daniel Vetter | bf89209 | 2015-07-09 23:32:39 +0200 | [diff] [blame] | 250 | out_unref: |
| 251 | drm_gem_object_unreference_unlocked(obj); |
| 252 | |
Christopher Harvey | a080db9 | 2013-06-05 15:24:26 -0400 | [diff] [blame] | 253 | return ret; |
| 254 | } |
| 255 | |
| 256 | int mga_crtc_cursor_move(struct drm_crtc *crtc, int x, int y) |
| 257 | { |
| 258 | struct mga_device *mdev = (struct mga_device *)crtc->dev->dev_private; |
| 259 | /* Our origin is at (64,64) */ |
| 260 | x += 64; |
| 261 | y += 64; |
| 262 | |
| 263 | BUG_ON(x <= 0); |
| 264 | BUG_ON(y <= 0); |
| 265 | BUG_ON(x & ~0xffff); |
| 266 | BUG_ON(y & ~0xffff); |
| 267 | |
| 268 | WREG8(MGA_CURPOSXL, x & 0xff); |
| 269 | WREG8(MGA_CURPOSXH, (x>>8) & 0xff); |
| 270 | |
| 271 | WREG8(MGA_CURPOSYL, y & 0xff); |
| 272 | WREG8(MGA_CURPOSYH, (y>>8) & 0xff); |
| 273 | return 0; |
| 274 | } |