xref: /openbmc/qemu/hw/display/sm501.c (revision ca693d1c)
1 /*
2  * QEMU SM501 Device
3  *
4  * Copyright (c) 2008 Shin-ichiro KAWASAKI
5  * Copyright (c) 2016 BALATON Zoltan
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a copy
8  * of this software and associated documentation files (the "Software"), to deal
9  * in the Software without restriction, including without limitation the rights
10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11  * copies of the Software, and to permit persons to whom the Software is
12  * furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included in
15  * all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23  * THE SOFTWARE.
24  */
25 
26 #include "qemu/osdep.h"
27 #include "qemu/units.h"
28 #include "qapi/error.h"
29 #include "qemu/log.h"
30 #include "qemu-common.h"
31 #include "cpu.h"
32 #include "hw/hw.h"
33 #include "hw/char/serial.h"
34 #include "ui/console.h"
35 #include "hw/sysbus.h"
36 #include "hw/pci/pci.h"
37 #include "hw/i2c/i2c.h"
38 #include "hw/display/i2c-ddc.h"
39 #include "qemu/range.h"
40 #include "ui/pixel_ops.h"
41 #include "qemu/bswap.h"
42 
43 /*
44  * Status: 2010/05/07
45  *   - Minimum implementation for Linux console : mmio regs and CRT layer.
46  *   - 2D graphics acceleration partially supported : only fill rectangle.
47  *
48  * Status: 2016/12/04
49  *   - Misc fixes: endianness, hardware cursor
50  *   - Panel support
51  *
52  * TODO:
53  *   - Touch panel support
54  *   - USB support
55  *   - UART support
56  *   - More 2D graphics engine support
57  *   - Performance tuning
58  */
59 
60 /*#define DEBUG_SM501*/
61 /*#define DEBUG_BITBLT*/
62 
63 #ifdef DEBUG_SM501
64 #define SM501_DPRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__)
65 #else
66 #define SM501_DPRINTF(fmt, ...) do {} while (0)
67 #endif
68 
69 #define MMIO_BASE_OFFSET 0x3e00000
70 #define MMIO_SIZE 0x200000
71 #define DC_PALETTE_ENTRIES (0x400 * 3)
72 
73 /* SM501 register definitions taken from "linux/include/linux/sm501-regs.h" */
74 
75 /* System Configuration area */
76 /* System config base */
77 #define SM501_SYS_CONFIG                (0x000000)
78 
79 /* config 1 */
80 #define SM501_SYSTEM_CONTROL            (0x000000)
81 
82 #define SM501_SYSCTRL_PANEL_TRISTATE    (1 << 0)
83 #define SM501_SYSCTRL_MEM_TRISTATE      (1 << 1)
84 #define SM501_SYSCTRL_CRT_TRISTATE      (1 << 2)
85 
86 #define SM501_SYSCTRL_PCI_SLAVE_BURST_MASK (3 << 4)
87 #define SM501_SYSCTRL_PCI_SLAVE_BURST_1 (0 << 4)
88 #define SM501_SYSCTRL_PCI_SLAVE_BURST_2 (1 << 4)
89 #define SM501_SYSCTRL_PCI_SLAVE_BURST_4 (2 << 4)
90 #define SM501_SYSCTRL_PCI_SLAVE_BURST_8 (3 << 4)
91 
92 #define SM501_SYSCTRL_PCI_CLOCK_RUN_EN  (1 << 6)
93 #define SM501_SYSCTRL_PCI_RETRY_DISABLE (1 << 7)
94 #define SM501_SYSCTRL_PCI_SUBSYS_LOCK   (1 << 11)
95 #define SM501_SYSCTRL_PCI_BURST_READ_EN (1 << 15)
96 
97 /* miscellaneous control */
98 
99 #define SM501_MISC_CONTROL              (0x000004)
100 
101 #define SM501_MISC_BUS_SH               (0x0)
102 #define SM501_MISC_BUS_PCI              (0x1)
103 #define SM501_MISC_BUS_XSCALE           (0x2)
104 #define SM501_MISC_BUS_NEC              (0x6)
105 #define SM501_MISC_BUS_MASK             (0x7)
106 
107 #define SM501_MISC_VR_62MB              (1 << 3)
108 #define SM501_MISC_CDR_RESET            (1 << 7)
109 #define SM501_MISC_USB_LB               (1 << 8)
110 #define SM501_MISC_USB_SLAVE            (1 << 9)
111 #define SM501_MISC_BL_1                 (1 << 10)
112 #define SM501_MISC_MC                   (1 << 11)
113 #define SM501_MISC_DAC_POWER            (1 << 12)
114 #define SM501_MISC_IRQ_INVERT           (1 << 16)
115 #define SM501_MISC_SH                   (1 << 17)
116 
117 #define SM501_MISC_HOLD_EMPTY           (0 << 18)
118 #define SM501_MISC_HOLD_8               (1 << 18)
119 #define SM501_MISC_HOLD_16              (2 << 18)
120 #define SM501_MISC_HOLD_24              (3 << 18)
121 #define SM501_MISC_HOLD_32              (4 << 18)
122 #define SM501_MISC_HOLD_MASK            (7 << 18)
123 
124 #define SM501_MISC_FREQ_12              (1 << 24)
125 #define SM501_MISC_PNL_24BIT            (1 << 25)
126 #define SM501_MISC_8051_LE              (1 << 26)
127 
128 
129 
130 #define SM501_GPIO31_0_CONTROL          (0x000008)
131 #define SM501_GPIO63_32_CONTROL         (0x00000C)
132 #define SM501_DRAM_CONTROL              (0x000010)
133 
134 /* command list */
135 #define SM501_ARBTRTN_CONTROL           (0x000014)
136 
137 /* command list */
138 #define SM501_COMMAND_LIST_STATUS       (0x000024)
139 
140 /* interrupt debug */
141 #define SM501_RAW_IRQ_STATUS            (0x000028)
142 #define SM501_RAW_IRQ_CLEAR             (0x000028)
143 #define SM501_IRQ_STATUS                (0x00002C)
144 #define SM501_IRQ_MASK                  (0x000030)
145 #define SM501_DEBUG_CONTROL             (0x000034)
146 
147 /* power management */
148 #define SM501_POWERMODE_P2X_SRC         (1 << 29)
149 #define SM501_POWERMODE_V2X_SRC         (1 << 20)
150 #define SM501_POWERMODE_M_SRC           (1 << 12)
151 #define SM501_POWERMODE_M1_SRC          (1 << 4)
152 
153 #define SM501_CURRENT_GATE              (0x000038)
154 #define SM501_CURRENT_CLOCK             (0x00003C)
155 #define SM501_POWER_MODE_0_GATE         (0x000040)
156 #define SM501_POWER_MODE_0_CLOCK        (0x000044)
157 #define SM501_POWER_MODE_1_GATE         (0x000048)
158 #define SM501_POWER_MODE_1_CLOCK        (0x00004C)
159 #define SM501_SLEEP_MODE_GATE           (0x000050)
160 #define SM501_POWER_MODE_CONTROL        (0x000054)
161 
162 /* power gates for units within the 501 */
163 #define SM501_GATE_HOST                 (0)
164 #define SM501_GATE_MEMORY               (1)
165 #define SM501_GATE_DISPLAY              (2)
166 #define SM501_GATE_2D_ENGINE            (3)
167 #define SM501_GATE_CSC                  (4)
168 #define SM501_GATE_ZVPORT               (5)
169 #define SM501_GATE_GPIO                 (6)
170 #define SM501_GATE_UART0                (7)
171 #define SM501_GATE_UART1                (8)
172 #define SM501_GATE_SSP                  (10)
173 #define SM501_GATE_USB_HOST             (11)
174 #define SM501_GATE_USB_GADGET           (12)
175 #define SM501_GATE_UCONTROLLER          (17)
176 #define SM501_GATE_AC97                 (18)
177 
178 /* panel clock */
179 #define SM501_CLOCK_P2XCLK              (24)
180 /* crt clock */
181 #define SM501_CLOCK_V2XCLK              (16)
182 /* main clock */
183 #define SM501_CLOCK_MCLK                (8)
184 /* SDRAM controller clock */
185 #define SM501_CLOCK_M1XCLK              (0)
186 
187 /* config 2 */
188 #define SM501_PCI_MASTER_BASE           (0x000058)
189 #define SM501_ENDIAN_CONTROL            (0x00005C)
190 #define SM501_DEVICEID                  (0x000060)
191 /* 0x050100A0 */
192 
193 #define SM501_DEVICEID_SM501            (0x05010000)
194 #define SM501_DEVICEID_IDMASK           (0xffff0000)
195 #define SM501_DEVICEID_REVMASK          (0x000000ff)
196 
197 #define SM501_PLLCLOCK_COUNT            (0x000064)
198 #define SM501_MISC_TIMING               (0x000068)
199 #define SM501_CURRENT_SDRAM_CLOCK       (0x00006C)
200 
201 #define SM501_PROGRAMMABLE_PLL_CONTROL  (0x000074)
202 
203 /* GPIO base */
204 #define SM501_GPIO                      (0x010000)
205 #define SM501_GPIO_DATA_LOW             (0x00)
206 #define SM501_GPIO_DATA_HIGH            (0x04)
207 #define SM501_GPIO_DDR_LOW              (0x08)
208 #define SM501_GPIO_DDR_HIGH             (0x0C)
209 #define SM501_GPIO_IRQ_SETUP            (0x10)
210 #define SM501_GPIO_IRQ_STATUS           (0x14)
211 #define SM501_GPIO_IRQ_RESET            (0x14)
212 
213 /* I2C controller base */
214 #define SM501_I2C                       (0x010040)
215 #define SM501_I2C_BYTE_COUNT            (0x00)
216 #define SM501_I2C_CONTROL               (0x01)
217 #define SM501_I2C_STATUS                (0x02)
218 #define SM501_I2C_RESET                 (0x02)
219 #define SM501_I2C_SLAVE_ADDRESS         (0x03)
220 #define SM501_I2C_DATA                  (0x04)
221 
222 #define SM501_I2C_CONTROL_START         (1 << 2)
223 #define SM501_I2C_CONTROL_ENABLE        (1 << 0)
224 
225 #define SM501_I2C_STATUS_COMPLETE       (1 << 3)
226 #define SM501_I2C_STATUS_ERROR          (1 << 2)
227 
228 #define SM501_I2C_RESET_ERROR           (1 << 2)
229 
230 /* SSP base */
231 #define SM501_SSP                       (0x020000)
232 
233 /* Uart 0 base */
234 #define SM501_UART0                     (0x030000)
235 
236 /* Uart 1 base */
237 #define SM501_UART1                     (0x030020)
238 
239 /* USB host port base */
240 #define SM501_USB_HOST                  (0x040000)
241 
242 /* USB slave/gadget base */
243 #define SM501_USB_GADGET                (0x060000)
244 
245 /* USB slave/gadget data port base */
246 #define SM501_USB_GADGET_DATA           (0x070000)
247 
248 /* Display controller/video engine base */
249 #define SM501_DC                        (0x080000)
250 
251 /* common defines for the SM501 address registers */
252 #define SM501_ADDR_FLIP                 (1 << 31)
253 #define SM501_ADDR_EXT                  (1 << 27)
254 #define SM501_ADDR_CS1                  (1 << 26)
255 #define SM501_ADDR_MASK                 (0x3f << 26)
256 
257 #define SM501_FIFO_MASK                 (0x3 << 16)
258 #define SM501_FIFO_1                    (0x0 << 16)
259 #define SM501_FIFO_3                    (0x1 << 16)
260 #define SM501_FIFO_7                    (0x2 << 16)
261 #define SM501_FIFO_11                   (0x3 << 16)
262 
263 /* common registers for panel and the crt */
264 #define SM501_OFF_DC_H_TOT              (0x000)
265 #define SM501_OFF_DC_V_TOT              (0x008)
266 #define SM501_OFF_DC_H_SYNC             (0x004)
267 #define SM501_OFF_DC_V_SYNC             (0x00C)
268 
269 #define SM501_DC_PANEL_CONTROL          (0x000)
270 
271 #define SM501_DC_PANEL_CONTROL_FPEN     (1 << 27)
272 #define SM501_DC_PANEL_CONTROL_BIAS     (1 << 26)
273 #define SM501_DC_PANEL_CONTROL_DATA     (1 << 25)
274 #define SM501_DC_PANEL_CONTROL_VDD      (1 << 24)
275 #define SM501_DC_PANEL_CONTROL_DP       (1 << 23)
276 
277 #define SM501_DC_PANEL_CONTROL_TFT_888  (0 << 21)
278 #define SM501_DC_PANEL_CONTROL_TFT_333  (1 << 21)
279 #define SM501_DC_PANEL_CONTROL_TFT_444  (2 << 21)
280 
281 #define SM501_DC_PANEL_CONTROL_DE       (1 << 20)
282 
283 #define SM501_DC_PANEL_CONTROL_LCD_TFT  (0 << 18)
284 #define SM501_DC_PANEL_CONTROL_LCD_STN8 (1 << 18)
285 #define SM501_DC_PANEL_CONTROL_LCD_STN12 (2 << 18)
286 
287 #define SM501_DC_PANEL_CONTROL_CP       (1 << 14)
288 #define SM501_DC_PANEL_CONTROL_VSP      (1 << 13)
289 #define SM501_DC_PANEL_CONTROL_HSP      (1 << 12)
290 #define SM501_DC_PANEL_CONTROL_CK       (1 << 9)
291 #define SM501_DC_PANEL_CONTROL_TE       (1 << 8)
292 #define SM501_DC_PANEL_CONTROL_VPD      (1 << 7)
293 #define SM501_DC_PANEL_CONTROL_VP       (1 << 6)
294 #define SM501_DC_PANEL_CONTROL_HPD      (1 << 5)
295 #define SM501_DC_PANEL_CONTROL_HP       (1 << 4)
296 #define SM501_DC_PANEL_CONTROL_GAMMA    (1 << 3)
297 #define SM501_DC_PANEL_CONTROL_EN       (1 << 2)
298 
299 #define SM501_DC_PANEL_CONTROL_8BPP     (0 << 0)
300 #define SM501_DC_PANEL_CONTROL_16BPP    (1 << 0)
301 #define SM501_DC_PANEL_CONTROL_32BPP    (2 << 0)
302 
303 
304 #define SM501_DC_PANEL_PANNING_CONTROL  (0x004)
305 #define SM501_DC_PANEL_COLOR_KEY        (0x008)
306 #define SM501_DC_PANEL_FB_ADDR          (0x00C)
307 #define SM501_DC_PANEL_FB_OFFSET        (0x010)
308 #define SM501_DC_PANEL_FB_WIDTH         (0x014)
309 #define SM501_DC_PANEL_FB_HEIGHT        (0x018)
310 #define SM501_DC_PANEL_TL_LOC           (0x01C)
311 #define SM501_DC_PANEL_BR_LOC           (0x020)
312 #define SM501_DC_PANEL_H_TOT            (0x024)
313 #define SM501_DC_PANEL_H_SYNC           (0x028)
314 #define SM501_DC_PANEL_V_TOT            (0x02C)
315 #define SM501_DC_PANEL_V_SYNC           (0x030)
316 #define SM501_DC_PANEL_CUR_LINE         (0x034)
317 
318 #define SM501_DC_VIDEO_CONTROL          (0x040)
319 #define SM501_DC_VIDEO_FB0_ADDR         (0x044)
320 #define SM501_DC_VIDEO_FB_WIDTH         (0x048)
321 #define SM501_DC_VIDEO_FB0_LAST_ADDR    (0x04C)
322 #define SM501_DC_VIDEO_TL_LOC           (0x050)
323 #define SM501_DC_VIDEO_BR_LOC           (0x054)
324 #define SM501_DC_VIDEO_SCALE            (0x058)
325 #define SM501_DC_VIDEO_INIT_SCALE       (0x05C)
326 #define SM501_DC_VIDEO_YUV_CONSTANTS    (0x060)
327 #define SM501_DC_VIDEO_FB1_ADDR         (0x064)
328 #define SM501_DC_VIDEO_FB1_LAST_ADDR    (0x068)
329 
330 #define SM501_DC_VIDEO_ALPHA_CONTROL    (0x080)
331 #define SM501_DC_VIDEO_ALPHA_FB_ADDR    (0x084)
332 #define SM501_DC_VIDEO_ALPHA_FB_OFFSET  (0x088)
333 #define SM501_DC_VIDEO_ALPHA_FB_LAST_ADDR (0x08C)
334 #define SM501_DC_VIDEO_ALPHA_TL_LOC     (0x090)
335 #define SM501_DC_VIDEO_ALPHA_BR_LOC     (0x094)
336 #define SM501_DC_VIDEO_ALPHA_SCALE      (0x098)
337 #define SM501_DC_VIDEO_ALPHA_INIT_SCALE (0x09C)
338 #define SM501_DC_VIDEO_ALPHA_CHROMA_KEY (0x0A0)
339 #define SM501_DC_VIDEO_ALPHA_COLOR_LOOKUP (0x0A4)
340 
341 #define SM501_DC_PANEL_HWC_BASE         (0x0F0)
342 #define SM501_DC_PANEL_HWC_ADDR         (0x0F0)
343 #define SM501_DC_PANEL_HWC_LOC          (0x0F4)
344 #define SM501_DC_PANEL_HWC_COLOR_1_2    (0x0F8)
345 #define SM501_DC_PANEL_HWC_COLOR_3      (0x0FC)
346 
347 #define SM501_HWC_EN                    (1 << 31)
348 
349 #define SM501_OFF_HWC_ADDR              (0x00)
350 #define SM501_OFF_HWC_LOC               (0x04)
351 #define SM501_OFF_HWC_COLOR_1_2         (0x08)
352 #define SM501_OFF_HWC_COLOR_3           (0x0C)
353 
354 #define SM501_DC_ALPHA_CONTROL          (0x100)
355 #define SM501_DC_ALPHA_FB_ADDR          (0x104)
356 #define SM501_DC_ALPHA_FB_OFFSET        (0x108)
357 #define SM501_DC_ALPHA_TL_LOC           (0x10C)
358 #define SM501_DC_ALPHA_BR_LOC           (0x110)
359 #define SM501_DC_ALPHA_CHROMA_KEY       (0x114)
360 #define SM501_DC_ALPHA_COLOR_LOOKUP     (0x118)
361 
362 #define SM501_DC_CRT_CONTROL            (0x200)
363 
364 #define SM501_DC_CRT_CONTROL_TVP        (1 << 15)
365 #define SM501_DC_CRT_CONTROL_CP         (1 << 14)
366 #define SM501_DC_CRT_CONTROL_VSP        (1 << 13)
367 #define SM501_DC_CRT_CONTROL_HSP        (1 << 12)
368 #define SM501_DC_CRT_CONTROL_VS         (1 << 11)
369 #define SM501_DC_CRT_CONTROL_BLANK      (1 << 10)
370 #define SM501_DC_CRT_CONTROL_SEL        (1 << 9)
371 #define SM501_DC_CRT_CONTROL_TE         (1 << 8)
372 #define SM501_DC_CRT_CONTROL_PIXEL_MASK (0xF << 4)
373 #define SM501_DC_CRT_CONTROL_GAMMA      (1 << 3)
374 #define SM501_DC_CRT_CONTROL_ENABLE     (1 << 2)
375 
376 #define SM501_DC_CRT_CONTROL_8BPP       (0 << 0)
377 #define SM501_DC_CRT_CONTROL_16BPP      (1 << 0)
378 #define SM501_DC_CRT_CONTROL_32BPP      (2 << 0)
379 
380 #define SM501_DC_CRT_FB_ADDR            (0x204)
381 #define SM501_DC_CRT_FB_OFFSET          (0x208)
382 #define SM501_DC_CRT_H_TOT              (0x20C)
383 #define SM501_DC_CRT_H_SYNC             (0x210)
384 #define SM501_DC_CRT_V_TOT              (0x214)
385 #define SM501_DC_CRT_V_SYNC             (0x218)
386 #define SM501_DC_CRT_SIGNATURE_ANALYZER (0x21C)
387 #define SM501_DC_CRT_CUR_LINE           (0x220)
388 #define SM501_DC_CRT_MONITOR_DETECT     (0x224)
389 
390 #define SM501_DC_CRT_HWC_BASE           (0x230)
391 #define SM501_DC_CRT_HWC_ADDR           (0x230)
392 #define SM501_DC_CRT_HWC_LOC            (0x234)
393 #define SM501_DC_CRT_HWC_COLOR_1_2      (0x238)
394 #define SM501_DC_CRT_HWC_COLOR_3        (0x23C)
395 
396 #define SM501_DC_PANEL_PALETTE          (0x400)
397 
398 #define SM501_DC_VIDEO_PALETTE          (0x800)
399 
400 #define SM501_DC_CRT_PALETTE            (0xC00)
401 
402 /* Zoom Video port base */
403 #define SM501_ZVPORT                    (0x090000)
404 
405 /* AC97/I2S base */
406 #define SM501_AC97                      (0x0A0000)
407 
408 /* 8051 micro controller base */
409 #define SM501_UCONTROLLER               (0x0B0000)
410 
411 /* 8051 micro controller SRAM base */
412 #define SM501_UCONTROLLER_SRAM          (0x0C0000)
413 
414 /* DMA base */
415 #define SM501_DMA                       (0x0D0000)
416 
417 /* 2d engine base */
418 #define SM501_2D_ENGINE                 (0x100000)
419 #define SM501_2D_SOURCE                 (0x00)
420 #define SM501_2D_DESTINATION            (0x04)
421 #define SM501_2D_DIMENSION              (0x08)
422 #define SM501_2D_CONTROL                (0x0C)
423 #define SM501_2D_PITCH                  (0x10)
424 #define SM501_2D_FOREGROUND             (0x14)
425 #define SM501_2D_BACKGROUND             (0x18)
426 #define SM501_2D_STRETCH                (0x1C)
427 #define SM501_2D_COLOR_COMPARE          (0x20)
428 #define SM501_2D_COLOR_COMPARE_MASK     (0x24)
429 #define SM501_2D_MASK                   (0x28)
430 #define SM501_2D_CLIP_TL                (0x2C)
431 #define SM501_2D_CLIP_BR                (0x30)
432 #define SM501_2D_MONO_PATTERN_LOW       (0x34)
433 #define SM501_2D_MONO_PATTERN_HIGH      (0x38)
434 #define SM501_2D_WINDOW_WIDTH           (0x3C)
435 #define SM501_2D_SOURCE_BASE            (0x40)
436 #define SM501_2D_DESTINATION_BASE       (0x44)
437 #define SM501_2D_ALPHA                  (0x48)
438 #define SM501_2D_WRAP                   (0x4C)
439 #define SM501_2D_STATUS                 (0x50)
440 
441 #define SM501_CSC_Y_SOURCE_BASE         (0xC8)
442 #define SM501_CSC_CONSTANTS             (0xCC)
443 #define SM501_CSC_Y_SOURCE_X            (0xD0)
444 #define SM501_CSC_Y_SOURCE_Y            (0xD4)
445 #define SM501_CSC_U_SOURCE_BASE         (0xD8)
446 #define SM501_CSC_V_SOURCE_BASE         (0xDC)
447 #define SM501_CSC_SOURCE_DIMENSION      (0xE0)
448 #define SM501_CSC_SOURCE_PITCH          (0xE4)
449 #define SM501_CSC_DESTINATION           (0xE8)
450 #define SM501_CSC_DESTINATION_DIMENSION (0xEC)
451 #define SM501_CSC_DESTINATION_PITCH     (0xF0)
452 #define SM501_CSC_SCALE_FACTOR          (0xF4)
453 #define SM501_CSC_DESTINATION_BASE      (0xF8)
454 #define SM501_CSC_CONTROL               (0xFC)
455 
456 /* 2d engine data port base */
457 #define SM501_2D_ENGINE_DATA            (0x110000)
458 
459 /* end of register definitions */
460 
461 #define SM501_HWC_WIDTH                       (64)
462 #define SM501_HWC_HEIGHT                      (64)
463 
464 /* SM501 local memory size taken from "linux/drivers/mfd/sm501.c" */
465 static const uint32_t sm501_mem_local_size[] = {
466     [0] = 4 * MiB,
467     [1] = 8 * MiB,
468     [2] = 16 * MiB,
469     [3] = 32 * MiB,
470     [4] = 64 * MiB,
471     [5] = 2 * MiB,
472 };
473 #define get_local_mem_size(s) sm501_mem_local_size[(s)->local_mem_size_index]
474 
475 typedef struct SM501State {
476     /* graphic console status */
477     QemuConsole *con;
478 
479     /* status & internal resources */
480     uint32_t local_mem_size_index;
481     uint8_t *local_mem;
482     MemoryRegion local_mem_region;
483     MemoryRegion mmio_region;
484     MemoryRegion system_config_region;
485     MemoryRegion i2c_region;
486     MemoryRegion disp_ctrl_region;
487     MemoryRegion twoD_engine_region;
488     uint32_t last_width;
489     uint32_t last_height;
490     bool do_full_update; /* perform a full update next time */
491     I2CBus *i2c_bus;
492 
493     /* mmio registers */
494     uint32_t system_control;
495     uint32_t misc_control;
496     uint32_t gpio_31_0_control;
497     uint32_t gpio_63_32_control;
498     uint32_t dram_control;
499     uint32_t arbitration_control;
500     uint32_t irq_mask;
501     uint32_t misc_timing;
502     uint32_t power_mode_control;
503 
504     uint8_t i2c_byte_count;
505     uint8_t i2c_status;
506     uint8_t i2c_addr;
507     uint8_t i2c_data[16];
508 
509     uint32_t uart0_ier;
510     uint32_t uart0_lcr;
511     uint32_t uart0_mcr;
512     uint32_t uart0_scr;
513 
514     uint8_t dc_palette[DC_PALETTE_ENTRIES];
515 
516     uint32_t dc_panel_control;
517     uint32_t dc_panel_panning_control;
518     uint32_t dc_panel_fb_addr;
519     uint32_t dc_panel_fb_offset;
520     uint32_t dc_panel_fb_width;
521     uint32_t dc_panel_fb_height;
522     uint32_t dc_panel_tl_location;
523     uint32_t dc_panel_br_location;
524     uint32_t dc_panel_h_total;
525     uint32_t dc_panel_h_sync;
526     uint32_t dc_panel_v_total;
527     uint32_t dc_panel_v_sync;
528 
529     uint32_t dc_panel_hwc_addr;
530     uint32_t dc_panel_hwc_location;
531     uint32_t dc_panel_hwc_color_1_2;
532     uint32_t dc_panel_hwc_color_3;
533 
534     uint32_t dc_video_control;
535 
536     uint32_t dc_crt_control;
537     uint32_t dc_crt_fb_addr;
538     uint32_t dc_crt_fb_offset;
539     uint32_t dc_crt_h_total;
540     uint32_t dc_crt_h_sync;
541     uint32_t dc_crt_v_total;
542     uint32_t dc_crt_v_sync;
543 
544     uint32_t dc_crt_hwc_addr;
545     uint32_t dc_crt_hwc_location;
546     uint32_t dc_crt_hwc_color_1_2;
547     uint32_t dc_crt_hwc_color_3;
548 
549     uint32_t twoD_source;
550     uint32_t twoD_destination;
551     uint32_t twoD_dimension;
552     uint32_t twoD_control;
553     uint32_t twoD_pitch;
554     uint32_t twoD_foreground;
555     uint32_t twoD_background;
556     uint32_t twoD_stretch;
557     uint32_t twoD_color_compare;
558     uint32_t twoD_color_compare_mask;
559     uint32_t twoD_mask;
560     uint32_t twoD_clip_tl;
561     uint32_t twoD_clip_br;
562     uint32_t twoD_mono_pattern_low;
563     uint32_t twoD_mono_pattern_high;
564     uint32_t twoD_window_width;
565     uint32_t twoD_source_base;
566     uint32_t twoD_destination_base;
567     uint32_t twoD_alpha;
568     uint32_t twoD_wrap;
569 } SM501State;
570 
571 static uint32_t get_local_mem_size_index(uint32_t size)
572 {
573     uint32_t norm_size = 0;
574     int i, index = 0;
575 
576     for (i = 0; i < ARRAY_SIZE(sm501_mem_local_size); i++) {
577         uint32_t new_size = sm501_mem_local_size[i];
578         if (new_size >= size) {
579             if (norm_size == 0 || norm_size > new_size) {
580                 norm_size = new_size;
581                 index = i;
582             }
583         }
584     }
585 
586     return index;
587 }
588 
589 static ram_addr_t get_fb_addr(SM501State *s, int crt)
590 {
591     return (crt ? s->dc_crt_fb_addr : s->dc_panel_fb_addr) & 0x3FFFFF0;
592 }
593 
594 static inline int get_width(SM501State *s, int crt)
595 {
596     int width = crt ? s->dc_crt_h_total : s->dc_panel_h_total;
597     return (width & 0x00000FFF) + 1;
598 }
599 
600 static inline int get_height(SM501State *s, int crt)
601 {
602     int height = crt ? s->dc_crt_v_total : s->dc_panel_v_total;
603     return (height & 0x00000FFF) + 1;
604 }
605 
606 static inline int get_bpp(SM501State *s, int crt)
607 {
608     int bpp = crt ? s->dc_crt_control : s->dc_panel_control;
609     return 1 << (bpp & 3);
610 }
611 
612 /**
613  * Check the availability of hardware cursor.
614  * @param crt  0 for PANEL, 1 for CRT.
615  */
616 static inline int is_hwc_enabled(SM501State *state, int crt)
617 {
618     uint32_t addr = crt ? state->dc_crt_hwc_addr : state->dc_panel_hwc_addr;
619     return addr & SM501_HWC_EN;
620 }
621 
622 /**
623  * Get the address which holds cursor pattern data.
624  * @param crt  0 for PANEL, 1 for CRT.
625  */
626 static inline uint8_t *get_hwc_address(SM501State *state, int crt)
627 {
628     uint32_t addr = crt ? state->dc_crt_hwc_addr : state->dc_panel_hwc_addr;
629     return state->local_mem + (addr & 0x03FFFFF0);
630 }
631 
632 /**
633  * Get the cursor position in y coordinate.
634  * @param crt  0 for PANEL, 1 for CRT.
635  */
636 static inline uint32_t get_hwc_y(SM501State *state, int crt)
637 {
638     uint32_t location = crt ? state->dc_crt_hwc_location
639                             : state->dc_panel_hwc_location;
640     return (location & 0x07FF0000) >> 16;
641 }
642 
643 /**
644  * Get the cursor position in x coordinate.
645  * @param crt  0 for PANEL, 1 for CRT.
646  */
647 static inline uint32_t get_hwc_x(SM501State *state, int crt)
648 {
649     uint32_t location = crt ? state->dc_crt_hwc_location
650                             : state->dc_panel_hwc_location;
651     return location & 0x000007FF;
652 }
653 
654 /**
655  * Get the hardware cursor palette.
656  * @param crt  0 for PANEL, 1 for CRT.
657  * @param palette  pointer to a [3 * 3] array to store color values in
658  */
659 static inline void get_hwc_palette(SM501State *state, int crt, uint8_t *palette)
660 {
661     int i;
662     uint32_t color_reg;
663     uint16_t rgb565;
664 
665     for (i = 0; i < 3; i++) {
666         if (i + 1 == 3) {
667             color_reg = crt ? state->dc_crt_hwc_color_3
668                             : state->dc_panel_hwc_color_3;
669         } else {
670             color_reg = crt ? state->dc_crt_hwc_color_1_2
671                             : state->dc_panel_hwc_color_1_2;
672         }
673 
674         if (i + 1 == 2) {
675             rgb565 = (color_reg >> 16) & 0xFFFF;
676         } else {
677             rgb565 = color_reg & 0xFFFF;
678         }
679         palette[i * 3 + 0] = ((rgb565 >> 11) * 527 + 23) >> 6; /* r */
680         palette[i * 3 + 1] = (((rgb565 >> 5) & 0x3f) * 259 + 33) >> 6; /* g */
681         palette[i * 3 + 2] = ((rgb565 & 0x1f) * 527 + 23) >> 6; /* b */
682     }
683 }
684 
685 static inline void hwc_invalidate(SM501State *s, int crt)
686 {
687     int w = get_width(s, crt);
688     int h = get_height(s, crt);
689     int bpp = get_bpp(s, crt);
690     int start = get_hwc_y(s, crt);
691     int end = MIN(h, start + SM501_HWC_HEIGHT) + 1;
692 
693     start *= w * bpp;
694     end *= w * bpp;
695 
696     memory_region_set_dirty(&s->local_mem_region,
697                             get_fb_addr(s, crt) + start, end - start);
698 }
699 
700 static void sm501_2d_operation(SM501State *s)
701 {
702     /* obtain operation parameters */
703     int operation = (s->twoD_control >> 16) & 0x1f;
704     int rtl = s->twoD_control & 0x8000000;
705     int src_x = (s->twoD_source >> 16) & 0x01FFF;
706     int src_y = s->twoD_source & 0xFFFF;
707     int dst_x = (s->twoD_destination >> 16) & 0x01FFF;
708     int dst_y = s->twoD_destination & 0xFFFF;
709     int operation_width = (s->twoD_dimension >> 16) & 0x1FFF;
710     int operation_height = s->twoD_dimension & 0xFFFF;
711     uint32_t color = s->twoD_foreground;
712     int format_flags = (s->twoD_stretch >> 20) & 0x3;
713     int addressing = (s->twoD_stretch >> 16) & 0xF;
714     int rop_mode = (s->twoD_control >> 15) & 0x1; /* 1 for rop2, else rop3 */
715     /* 1 if rop2 source is the pattern, otherwise the source is the bitmap */
716     int rop2_source_is_pattern = (s->twoD_control >> 14) & 0x1;
717     int rop = s->twoD_control & 0xFF;
718     uint32_t src_base = s->twoD_source_base & 0x03FFFFFF;
719     uint32_t dst_base = s->twoD_destination_base & 0x03FFFFFF;
720 
721     /* get frame buffer info */
722     uint8_t *src = s->local_mem + src_base;
723     uint8_t *dst = s->local_mem + dst_base;
724     int src_width = s->twoD_pitch & 0x1FFF;
725     int dst_width = (s->twoD_pitch >> 16) & 0x1FFF;
726     int crt = (s->dc_crt_control & SM501_DC_CRT_CONTROL_SEL) ? 1 : 0;
727     int fb_len = get_width(s, crt) * get_height(s, crt) * get_bpp(s, crt);
728 
729     if (addressing != 0x0) {
730         printf("%s: only XY addressing is supported.\n", __func__);
731         abort();
732     }
733 
734     if (rop_mode == 0) {
735         if (rop != 0xcc) {
736             /* Anything other than plain copies are not supported */
737             qemu_log_mask(LOG_UNIMP, "sm501: rop3 mode with rop %x is not "
738                           "supported.\n", rop);
739         }
740     } else {
741         if (rop2_source_is_pattern && rop != 0x5) {
742             /* For pattern source, we support only inverse dest */
743             qemu_log_mask(LOG_UNIMP, "sm501: rop2 source being the pattern and "
744                           "rop %x is not supported.\n", rop);
745         } else {
746             if (rop != 0x5 && rop != 0xc) {
747                 /* Anything other than plain copies or inverse dest is not
748                  * supported */
749                 qemu_log_mask(LOG_UNIMP, "sm501: rop mode %x is not "
750                               "supported.\n", rop);
751             }
752         }
753     }
754 
755     if ((s->twoD_source_base & 0x08000000) ||
756         (s->twoD_destination_base & 0x08000000)) {
757         printf("%s: only local memory is supported.\n", __func__);
758         abort();
759     }
760 
761     switch (operation) {
762     case 0x00: /* copy area */
763 #define COPY_AREA(_bpp, _pixel_type, rtl) {                                   \
764         int y, x, index_d, index_s;                                           \
765         for (y = 0; y < operation_height; y++) {                              \
766             for (x = 0; x < operation_width; x++) {                           \
767                 _pixel_type val;                                              \
768                                                                               \
769                 if (rtl) {                                                    \
770                     index_s = ((src_y - y) * src_width + src_x - x) * _bpp;   \
771                     index_d = ((dst_y - y) * dst_width + dst_x - x) * _bpp;   \
772                 } else {                                                      \
773                     index_s = ((src_y + y) * src_width + src_x + x) * _bpp;   \
774                     index_d = ((dst_y + y) * dst_width + dst_x + x) * _bpp;   \
775                 }                                                             \
776                 if (rop_mode == 1 && rop == 5) {                              \
777                     /* Invert dest */                                         \
778                     val = ~*(_pixel_type *)&dst[index_d];                     \
779                 } else {                                                      \
780                     val = *(_pixel_type *)&src[index_s];                      \
781                 }                                                             \
782                 *(_pixel_type *)&dst[index_d] = val;                          \
783             }                                                                 \
784         }                                                                     \
785     }
786         switch (format_flags) {
787         case 0:
788             COPY_AREA(1, uint8_t, rtl);
789             break;
790         case 1:
791             COPY_AREA(2, uint16_t, rtl);
792             break;
793         case 2:
794             COPY_AREA(4, uint32_t, rtl);
795             break;
796         }
797         break;
798 
799     case 0x01: /* fill rectangle */
800 #define FILL_RECT(_bpp, _pixel_type) {                                      \
801         int y, x;                                                           \
802         for (y = 0; y < operation_height; y++) {                            \
803             for (x = 0; x < operation_width; x++) {                         \
804                 int index = ((dst_y + y) * dst_width + dst_x + x) * _bpp;   \
805                 *(_pixel_type *)&dst[index] = (_pixel_type)color;           \
806             }                                                               \
807         }                                                                   \
808     }
809 
810         switch (format_flags) {
811         case 0:
812             FILL_RECT(1, uint8_t);
813             break;
814         case 1:
815             color = cpu_to_le16(color);
816             FILL_RECT(2, uint16_t);
817             break;
818         case 2:
819             color = cpu_to_le32(color);
820             FILL_RECT(4, uint32_t);
821             break;
822         }
823         break;
824 
825     default:
826         printf("non-implemented SM501 2D operation. %d\n", operation);
827         abort();
828         break;
829     }
830 
831     if (dst_base >= get_fb_addr(s, crt) &&
832         dst_base <= get_fb_addr(s, crt) + fb_len) {
833         int dst_len = MIN(fb_len, ((dst_y + operation_height - 1) * dst_width +
834                            dst_x + operation_width) * (1 << format_flags));
835         if (dst_len) {
836             memory_region_set_dirty(&s->local_mem_region, dst_base, dst_len);
837         }
838     }
839 }
840 
841 static uint64_t sm501_system_config_read(void *opaque, hwaddr addr,
842                                          unsigned size)
843 {
844     SM501State *s = (SM501State *)opaque;
845     uint32_t ret = 0;
846     SM501_DPRINTF("sm501 system config regs : read addr=%x\n", (int)addr);
847 
848     switch (addr) {
849     case SM501_SYSTEM_CONTROL:
850         ret = s->system_control;
851         break;
852     case SM501_MISC_CONTROL:
853         ret = s->misc_control;
854         break;
855     case SM501_GPIO31_0_CONTROL:
856         ret = s->gpio_31_0_control;
857         break;
858     case SM501_GPIO63_32_CONTROL:
859         ret = s->gpio_63_32_control;
860         break;
861     case SM501_DEVICEID:
862         ret = 0x050100A0;
863         break;
864     case SM501_DRAM_CONTROL:
865         ret = (s->dram_control & 0x07F107C0) | s->local_mem_size_index << 13;
866         break;
867     case SM501_ARBTRTN_CONTROL:
868         ret = s->arbitration_control;
869         break;
870     case SM501_COMMAND_LIST_STATUS:
871         ret = 0x00180002; /* FIFOs are empty, everything idle */
872         break;
873     case SM501_IRQ_MASK:
874         ret = s->irq_mask;
875         break;
876     case SM501_MISC_TIMING:
877         /* TODO : simulate gate control */
878         ret = s->misc_timing;
879         break;
880     case SM501_CURRENT_GATE:
881         /* TODO : simulate gate control */
882         ret = 0x00021807;
883         break;
884     case SM501_CURRENT_CLOCK:
885         ret = 0x2A1A0A09;
886         break;
887     case SM501_POWER_MODE_CONTROL:
888         ret = s->power_mode_control;
889         break;
890     case SM501_ENDIAN_CONTROL:
891         ret = 0; /* Only default little endian mode is supported */
892         break;
893 
894     default:
895         printf("sm501 system config : not implemented register read."
896                " addr=%x\n", (int)addr);
897         abort();
898     }
899 
900     return ret;
901 }
902 
903 static void sm501_system_config_write(void *opaque, hwaddr addr,
904                                       uint64_t value, unsigned size)
905 {
906     SM501State *s = (SM501State *)opaque;
907     SM501_DPRINTF("sm501 system config regs : write addr=%x, val=%x\n",
908                   (uint32_t)addr, (uint32_t)value);
909 
910     switch (addr) {
911     case SM501_SYSTEM_CONTROL:
912         s->system_control &= 0x10DB0000;
913         s->system_control |= value & 0xEF00B8F7;
914         break;
915     case SM501_MISC_CONTROL:
916         s->misc_control &= 0xEF;
917         s->misc_control |= value & 0xFF7FFF10;
918         break;
919     case SM501_GPIO31_0_CONTROL:
920         s->gpio_31_0_control = value;
921         break;
922     case SM501_GPIO63_32_CONTROL:
923         s->gpio_63_32_control = value & 0xFF80FFFF;
924         break;
925     case SM501_DRAM_CONTROL:
926         s->local_mem_size_index = (value >> 13) & 0x7;
927         /* TODO : check validity of size change */
928         s->dram_control &= 0x80000000;
929         s->dram_control |= value & 0x7FFFFFC3;
930         break;
931     case SM501_ARBTRTN_CONTROL:
932         s->arbitration_control = value & 0x37777777;
933         break;
934     case SM501_IRQ_MASK:
935         s->irq_mask = value & 0xFFDF3F5F;
936         break;
937     case SM501_MISC_TIMING:
938         s->misc_timing = value & 0xF31F1FFF;
939         break;
940     case SM501_POWER_MODE_0_GATE:
941     case SM501_POWER_MODE_1_GATE:
942     case SM501_POWER_MODE_0_CLOCK:
943     case SM501_POWER_MODE_1_CLOCK:
944         /* TODO : simulate gate & clock control */
945         break;
946     case SM501_POWER_MODE_CONTROL:
947         s->power_mode_control = value & 0x00000003;
948         break;
949     case SM501_ENDIAN_CONTROL:
950         if (value & 0x00000001) {
951             printf("sm501 system config : big endian mode not implemented.\n");
952             abort();
953         }
954         break;
955 
956     default:
957         printf("sm501 system config : not implemented register write."
958                " addr=%x, val=%x\n", (int)addr, (uint32_t)value);
959         abort();
960     }
961 }
962 
963 static const MemoryRegionOps sm501_system_config_ops = {
964     .read = sm501_system_config_read,
965     .write = sm501_system_config_write,
966     .valid = {
967         .min_access_size = 4,
968         .max_access_size = 4,
969     },
970     .endianness = DEVICE_LITTLE_ENDIAN,
971 };
972 
973 static uint64_t sm501_i2c_read(void *opaque, hwaddr addr, unsigned size)
974 {
975     SM501State *s = (SM501State *)opaque;
976     uint8_t ret = 0;
977 
978     switch (addr) {
979     case SM501_I2C_BYTE_COUNT:
980         ret = s->i2c_byte_count;
981         break;
982     case SM501_I2C_STATUS:
983         ret = s->i2c_status;
984         break;
985     case SM501_I2C_SLAVE_ADDRESS:
986         ret = s->i2c_addr;
987         break;
988     case SM501_I2C_DATA ... SM501_I2C_DATA + 15:
989         ret = s->i2c_data[addr - SM501_I2C_DATA];
990         break;
991     default:
992         qemu_log_mask(LOG_UNIMP, "sm501 i2c : not implemented register read."
993                       " addr=0x%" HWADDR_PRIx "\n", addr);
994     }
995 
996     SM501_DPRINTF("sm501 i2c regs : read addr=%" HWADDR_PRIx " val=%x\n",
997                   addr, ret);
998     return ret;
999 }
1000 
1001 static void sm501_i2c_write(void *opaque, hwaddr addr, uint64_t value,
1002                             unsigned size)
1003 {
1004     SM501State *s = (SM501State *)opaque;
1005     SM501_DPRINTF("sm501 i2c regs : write addr=%" HWADDR_PRIx
1006                   " val=%" PRIx64 "\n", addr, value);
1007 
1008     switch (addr) {
1009     case SM501_I2C_BYTE_COUNT:
1010         s->i2c_byte_count = value & 0xf;
1011         break;
1012     case SM501_I2C_CONTROL:
1013         if (value & SM501_I2C_CONTROL_ENABLE) {
1014             if (value & SM501_I2C_CONTROL_START) {
1015                 int res = i2c_start_transfer(s->i2c_bus,
1016                                              s->i2c_addr >> 1,
1017                                              s->i2c_addr & 1);
1018                 s->i2c_status |= (res ? SM501_I2C_STATUS_ERROR : 0);
1019                 if (!res) {
1020                     int i;
1021                     SM501_DPRINTF("sm501 i2c : transferring %d bytes to 0x%x\n",
1022                                   s->i2c_byte_count + 1, s->i2c_addr >> 1);
1023                     for (i = 0; i <= s->i2c_byte_count; i++) {
1024                         res = i2c_send_recv(s->i2c_bus, &s->i2c_data[i],
1025                                             !(s->i2c_addr & 1));
1026                         if (res) {
1027                             SM501_DPRINTF("sm501 i2c : transfer failed"
1028                                           " i=%d, res=%d\n", i, res);
1029                             s->i2c_status |= SM501_I2C_STATUS_ERROR;
1030                             return;
1031                         }
1032                     }
1033                     if (i) {
1034                         SM501_DPRINTF("sm501 i2c : transferred %d bytes\n", i);
1035                         s->i2c_status = SM501_I2C_STATUS_COMPLETE;
1036                     }
1037                 }
1038             } else {
1039                 SM501_DPRINTF("sm501 i2c : end transfer\n");
1040                 i2c_end_transfer(s->i2c_bus);
1041                 s->i2c_status &= ~SM501_I2C_STATUS_ERROR;
1042             }
1043         }
1044         break;
1045     case SM501_I2C_RESET:
1046         if ((value & SM501_I2C_RESET_ERROR) == 0) {
1047             s->i2c_status &= ~SM501_I2C_STATUS_ERROR;
1048         }
1049         break;
1050     case SM501_I2C_SLAVE_ADDRESS:
1051         s->i2c_addr = value & 0xff;
1052         break;
1053     case SM501_I2C_DATA ... SM501_I2C_DATA + 15:
1054         s->i2c_data[addr - SM501_I2C_DATA] = value & 0xff;
1055         break;
1056     default:
1057         qemu_log_mask(LOG_UNIMP, "sm501 i2c : not implemented register write. "
1058                       "addr=0x%" HWADDR_PRIx " val=%" PRIx64 "\n", addr, value);
1059     }
1060 }
1061 
1062 static const MemoryRegionOps sm501_i2c_ops = {
1063     .read = sm501_i2c_read,
1064     .write = sm501_i2c_write,
1065     .valid = {
1066         .min_access_size = 1,
1067         .max_access_size = 1,
1068     },
1069     .impl = {
1070         .min_access_size = 1,
1071         .max_access_size = 1,
1072     },
1073     .endianness = DEVICE_LITTLE_ENDIAN,
1074 };
1075 
1076 static uint32_t sm501_palette_read(void *opaque, hwaddr addr)
1077 {
1078     SM501State *s = (SM501State *)opaque;
1079     SM501_DPRINTF("sm501 palette read addr=%x\n", (int)addr);
1080 
1081     /* TODO : consider BYTE/WORD access */
1082     /* TODO : consider endian */
1083 
1084     assert(range_covers_byte(0, 0x400 * 3, addr));
1085     return *(uint32_t *)&s->dc_palette[addr];
1086 }
1087 
1088 static void sm501_palette_write(void *opaque, hwaddr addr,
1089                                 uint32_t value)
1090 {
1091     SM501State *s = (SM501State *)opaque;
1092     SM501_DPRINTF("sm501 palette write addr=%x, val=%x\n",
1093                   (int)addr, value);
1094 
1095     /* TODO : consider BYTE/WORD access */
1096     /* TODO : consider endian */
1097 
1098     assert(range_covers_byte(0, 0x400 * 3, addr));
1099     *(uint32_t *)&s->dc_palette[addr] = value;
1100     s->do_full_update = true;
1101 }
1102 
1103 static uint64_t sm501_disp_ctrl_read(void *opaque, hwaddr addr,
1104                                      unsigned size)
1105 {
1106     SM501State *s = (SM501State *)opaque;
1107     uint32_t ret = 0;
1108     SM501_DPRINTF("sm501 disp ctrl regs : read addr=%x\n", (int)addr);
1109 
1110     switch (addr) {
1111 
1112     case SM501_DC_PANEL_CONTROL:
1113         ret = s->dc_panel_control;
1114         break;
1115     case SM501_DC_PANEL_PANNING_CONTROL:
1116         ret = s->dc_panel_panning_control;
1117         break;
1118     case SM501_DC_PANEL_COLOR_KEY:
1119         /* Not implemented yet */
1120         break;
1121     case SM501_DC_PANEL_FB_ADDR:
1122         ret = s->dc_panel_fb_addr;
1123         break;
1124     case SM501_DC_PANEL_FB_OFFSET:
1125         ret = s->dc_panel_fb_offset;
1126         break;
1127     case SM501_DC_PANEL_FB_WIDTH:
1128         ret = s->dc_panel_fb_width;
1129         break;
1130     case SM501_DC_PANEL_FB_HEIGHT:
1131         ret = s->dc_panel_fb_height;
1132         break;
1133     case SM501_DC_PANEL_TL_LOC:
1134         ret = s->dc_panel_tl_location;
1135         break;
1136     case SM501_DC_PANEL_BR_LOC:
1137         ret = s->dc_panel_br_location;
1138         break;
1139 
1140     case SM501_DC_PANEL_H_TOT:
1141         ret = s->dc_panel_h_total;
1142         break;
1143     case SM501_DC_PANEL_H_SYNC:
1144         ret = s->dc_panel_h_sync;
1145         break;
1146     case SM501_DC_PANEL_V_TOT:
1147         ret = s->dc_panel_v_total;
1148         break;
1149     case SM501_DC_PANEL_V_SYNC:
1150         ret = s->dc_panel_v_sync;
1151         break;
1152 
1153     case SM501_DC_PANEL_HWC_ADDR:
1154         ret = s->dc_panel_hwc_addr;
1155         break;
1156     case SM501_DC_PANEL_HWC_LOC:
1157         ret = s->dc_panel_hwc_location;
1158         break;
1159     case SM501_DC_PANEL_HWC_COLOR_1_2:
1160         ret = s->dc_panel_hwc_color_1_2;
1161         break;
1162     case SM501_DC_PANEL_HWC_COLOR_3:
1163         ret = s->dc_panel_hwc_color_3;
1164         break;
1165 
1166     case SM501_DC_VIDEO_CONTROL:
1167         ret = s->dc_video_control;
1168         break;
1169 
1170     case SM501_DC_CRT_CONTROL:
1171         ret = s->dc_crt_control;
1172         break;
1173     case SM501_DC_CRT_FB_ADDR:
1174         ret = s->dc_crt_fb_addr;
1175         break;
1176     case SM501_DC_CRT_FB_OFFSET:
1177         ret = s->dc_crt_fb_offset;
1178         break;
1179     case SM501_DC_CRT_H_TOT:
1180         ret = s->dc_crt_h_total;
1181         break;
1182     case SM501_DC_CRT_H_SYNC:
1183         ret = s->dc_crt_h_sync;
1184         break;
1185     case SM501_DC_CRT_V_TOT:
1186         ret = s->dc_crt_v_total;
1187         break;
1188     case SM501_DC_CRT_V_SYNC:
1189         ret = s->dc_crt_v_sync;
1190         break;
1191 
1192     case SM501_DC_CRT_HWC_ADDR:
1193         ret = s->dc_crt_hwc_addr;
1194         break;
1195     case SM501_DC_CRT_HWC_LOC:
1196         ret = s->dc_crt_hwc_location;
1197         break;
1198     case SM501_DC_CRT_HWC_COLOR_1_2:
1199         ret = s->dc_crt_hwc_color_1_2;
1200         break;
1201     case SM501_DC_CRT_HWC_COLOR_3:
1202         ret = s->dc_crt_hwc_color_3;
1203         break;
1204 
1205     case SM501_DC_PANEL_PALETTE ... SM501_DC_PANEL_PALETTE + 0x400 * 3 - 4:
1206         ret = sm501_palette_read(opaque, addr - SM501_DC_PANEL_PALETTE);
1207         break;
1208 
1209     default:
1210         printf("sm501 disp ctrl : not implemented register read."
1211                " addr=%x\n", (int)addr);
1212         abort();
1213     }
1214 
1215     return ret;
1216 }
1217 
1218 static void sm501_disp_ctrl_write(void *opaque, hwaddr addr,
1219                                   uint64_t value, unsigned size)
1220 {
1221     SM501State *s = (SM501State *)opaque;
1222     SM501_DPRINTF("sm501 disp ctrl regs : write addr=%x, val=%x\n",
1223                   (unsigned)addr, (unsigned)value);
1224 
1225     switch (addr) {
1226     case SM501_DC_PANEL_CONTROL:
1227         s->dc_panel_control = value & 0x0FFF73FF;
1228         break;
1229     case SM501_DC_PANEL_PANNING_CONTROL:
1230         s->dc_panel_panning_control = value & 0xFF3FFF3F;
1231         break;
1232     case SM501_DC_PANEL_COLOR_KEY:
1233         /* Not implemented yet */
1234         break;
1235     case SM501_DC_PANEL_FB_ADDR:
1236         s->dc_panel_fb_addr = value & 0x8FFFFFF0;
1237         if (value & 0x8000000) {
1238             qemu_log_mask(LOG_UNIMP, "Panel external memory not supported\n");
1239         }
1240         s->do_full_update = true;
1241         break;
1242     case SM501_DC_PANEL_FB_OFFSET:
1243         s->dc_panel_fb_offset = value & 0x3FF03FF0;
1244         break;
1245     case SM501_DC_PANEL_FB_WIDTH:
1246         s->dc_panel_fb_width = value & 0x0FFF0FFF;
1247         break;
1248     case SM501_DC_PANEL_FB_HEIGHT:
1249         s->dc_panel_fb_height = value & 0x0FFF0FFF;
1250         break;
1251     case SM501_DC_PANEL_TL_LOC:
1252         s->dc_panel_tl_location = value & 0x07FF07FF;
1253         break;
1254     case SM501_DC_PANEL_BR_LOC:
1255         s->dc_panel_br_location = value & 0x07FF07FF;
1256         break;
1257 
1258     case SM501_DC_PANEL_H_TOT:
1259         s->dc_panel_h_total = value & 0x0FFF0FFF;
1260         break;
1261     case SM501_DC_PANEL_H_SYNC:
1262         s->dc_panel_h_sync = value & 0x00FF0FFF;
1263         break;
1264     case SM501_DC_PANEL_V_TOT:
1265         s->dc_panel_v_total = value & 0x0FFF0FFF;
1266         break;
1267     case SM501_DC_PANEL_V_SYNC:
1268         s->dc_panel_v_sync = value & 0x003F0FFF;
1269         break;
1270 
1271     case SM501_DC_PANEL_HWC_ADDR:
1272         value &= 0x8FFFFFF0;
1273         if (value != s->dc_panel_hwc_addr) {
1274             hwc_invalidate(s, 0);
1275             s->dc_panel_hwc_addr = value;
1276         }
1277         break;
1278     case SM501_DC_PANEL_HWC_LOC:
1279         value &= 0x0FFF0FFF;
1280         if (value != s->dc_panel_hwc_location) {
1281             hwc_invalidate(s, 0);
1282             s->dc_panel_hwc_location = value;
1283         }
1284         break;
1285     case SM501_DC_PANEL_HWC_COLOR_1_2:
1286         s->dc_panel_hwc_color_1_2 = value;
1287         break;
1288     case SM501_DC_PANEL_HWC_COLOR_3:
1289         s->dc_panel_hwc_color_3 = value & 0x0000FFFF;
1290         break;
1291 
1292     case SM501_DC_VIDEO_CONTROL:
1293         s->dc_video_control = value & 0x00037FFF;
1294         break;
1295 
1296     case SM501_DC_CRT_CONTROL:
1297         s->dc_crt_control = value & 0x0003FFFF;
1298         break;
1299     case SM501_DC_CRT_FB_ADDR:
1300         s->dc_crt_fb_addr = value & 0x8FFFFFF0;
1301         if (value & 0x8000000) {
1302             qemu_log_mask(LOG_UNIMP, "CRT external memory not supported\n");
1303         }
1304         s->do_full_update = true;
1305         break;
1306     case SM501_DC_CRT_FB_OFFSET:
1307         s->dc_crt_fb_offset = value & 0x3FF03FF0;
1308         break;
1309     case SM501_DC_CRT_H_TOT:
1310         s->dc_crt_h_total = value & 0x0FFF0FFF;
1311         break;
1312     case SM501_DC_CRT_H_SYNC:
1313         s->dc_crt_h_sync = value & 0x00FF0FFF;
1314         break;
1315     case SM501_DC_CRT_V_TOT:
1316         s->dc_crt_v_total = value & 0x0FFF0FFF;
1317         break;
1318     case SM501_DC_CRT_V_SYNC:
1319         s->dc_crt_v_sync = value & 0x003F0FFF;
1320         break;
1321 
1322     case SM501_DC_CRT_HWC_ADDR:
1323         value &= 0x8FFFFFF0;
1324         if (value != s->dc_crt_hwc_addr) {
1325             hwc_invalidate(s, 1);
1326             s->dc_crt_hwc_addr = value;
1327         }
1328         break;
1329     case SM501_DC_CRT_HWC_LOC:
1330         value &= 0x0FFF0FFF;
1331         if (value != s->dc_crt_hwc_location) {
1332             hwc_invalidate(s, 1);
1333             s->dc_crt_hwc_location = value;
1334         }
1335         break;
1336     case SM501_DC_CRT_HWC_COLOR_1_2:
1337         s->dc_crt_hwc_color_1_2 = value;
1338         break;
1339     case SM501_DC_CRT_HWC_COLOR_3:
1340         s->dc_crt_hwc_color_3 = value & 0x0000FFFF;
1341         break;
1342 
1343     case SM501_DC_PANEL_PALETTE ... SM501_DC_PANEL_PALETTE + 0x400 * 3 - 4:
1344         sm501_palette_write(opaque, addr - SM501_DC_PANEL_PALETTE, value);
1345         break;
1346 
1347     default:
1348         printf("sm501 disp ctrl : not implemented register write."
1349                " addr=%x, val=%x\n", (int)addr, (unsigned)value);
1350         abort();
1351     }
1352 }
1353 
1354 static const MemoryRegionOps sm501_disp_ctrl_ops = {
1355     .read = sm501_disp_ctrl_read,
1356     .write = sm501_disp_ctrl_write,
1357     .valid = {
1358         .min_access_size = 4,
1359         .max_access_size = 4,
1360     },
1361     .endianness = DEVICE_LITTLE_ENDIAN,
1362 };
1363 
1364 static uint64_t sm501_2d_engine_read(void *opaque, hwaddr addr,
1365                                      unsigned size)
1366 {
1367     SM501State *s = (SM501State *)opaque;
1368     uint32_t ret = 0;
1369     SM501_DPRINTF("sm501 2d engine regs : read addr=%x\n", (int)addr);
1370 
1371     switch (addr) {
1372     case SM501_2D_SOURCE:
1373         ret = s->twoD_source;
1374         break;
1375     case SM501_2D_DESTINATION:
1376         ret = s->twoD_destination;
1377         break;
1378     case SM501_2D_DIMENSION:
1379         ret = s->twoD_dimension;
1380         break;
1381     case SM501_2D_CONTROL:
1382         ret = s->twoD_control;
1383         break;
1384     case SM501_2D_PITCH:
1385         ret = s->twoD_pitch;
1386         break;
1387     case SM501_2D_FOREGROUND:
1388         ret = s->twoD_foreground;
1389         break;
1390     case SM501_2D_BACKGROUND:
1391         ret = s->twoD_background;
1392         break;
1393     case SM501_2D_STRETCH:
1394         ret = s->twoD_stretch;
1395         break;
1396     case SM501_2D_COLOR_COMPARE:
1397         ret = s->twoD_color_compare;
1398         break;
1399     case SM501_2D_COLOR_COMPARE_MASK:
1400         ret = s->twoD_color_compare_mask;
1401         break;
1402     case SM501_2D_MASK:
1403         ret = s->twoD_mask;
1404         break;
1405     case SM501_2D_CLIP_TL:
1406         ret = s->twoD_clip_tl;
1407         break;
1408     case SM501_2D_CLIP_BR:
1409         ret = s->twoD_clip_br;
1410         break;
1411     case SM501_2D_MONO_PATTERN_LOW:
1412         ret = s->twoD_mono_pattern_low;
1413         break;
1414     case SM501_2D_MONO_PATTERN_HIGH:
1415         ret = s->twoD_mono_pattern_high;
1416         break;
1417     case SM501_2D_WINDOW_WIDTH:
1418         ret = s->twoD_window_width;
1419         break;
1420     case SM501_2D_SOURCE_BASE:
1421         ret = s->twoD_source_base;
1422         break;
1423     case SM501_2D_DESTINATION_BASE:
1424         ret = s->twoD_destination_base;
1425         break;
1426     case SM501_2D_ALPHA:
1427         ret = s->twoD_alpha;
1428         break;
1429     case SM501_2D_WRAP:
1430         ret = s->twoD_wrap;
1431         break;
1432     case SM501_2D_STATUS:
1433         ret = 0; /* Should return interrupt status */
1434         break;
1435     default:
1436         printf("sm501 disp ctrl : not implemented register read."
1437                " addr=%x\n", (int)addr);
1438         abort();
1439     }
1440 
1441     return ret;
1442 }
1443 
1444 static void sm501_2d_engine_write(void *opaque, hwaddr addr,
1445                                   uint64_t value, unsigned size)
1446 {
1447     SM501State *s = (SM501State *)opaque;
1448     SM501_DPRINTF("sm501 2d engine regs : write addr=%x, val=%x\n",
1449                   (unsigned)addr, (unsigned)value);
1450 
1451     switch (addr) {
1452     case SM501_2D_SOURCE:
1453         s->twoD_source = value;
1454         break;
1455     case SM501_2D_DESTINATION:
1456         s->twoD_destination = value;
1457         break;
1458     case SM501_2D_DIMENSION:
1459         s->twoD_dimension = value;
1460         break;
1461     case SM501_2D_CONTROL:
1462         s->twoD_control = value;
1463 
1464         /* do 2d operation if start flag is set. */
1465         if (value & 0x80000000) {
1466             sm501_2d_operation(s);
1467             s->twoD_control &= ~0x80000000; /* start flag down */
1468         }
1469 
1470         break;
1471     case SM501_2D_PITCH:
1472         s->twoD_pitch = value;
1473         break;
1474     case SM501_2D_FOREGROUND:
1475         s->twoD_foreground = value;
1476         break;
1477     case SM501_2D_BACKGROUND:
1478         s->twoD_background = value;
1479         break;
1480     case SM501_2D_STRETCH:
1481         s->twoD_stretch = value;
1482         break;
1483     case SM501_2D_COLOR_COMPARE:
1484         s->twoD_color_compare = value;
1485         break;
1486     case SM501_2D_COLOR_COMPARE_MASK:
1487         s->twoD_color_compare_mask = value;
1488         break;
1489     case SM501_2D_MASK:
1490         s->twoD_mask = value;
1491         break;
1492     case SM501_2D_CLIP_TL:
1493         s->twoD_clip_tl = value;
1494         break;
1495     case SM501_2D_CLIP_BR:
1496         s->twoD_clip_br = value;
1497         break;
1498     case SM501_2D_MONO_PATTERN_LOW:
1499         s->twoD_mono_pattern_low = value;
1500         break;
1501     case SM501_2D_MONO_PATTERN_HIGH:
1502         s->twoD_mono_pattern_high = value;
1503         break;
1504     case SM501_2D_WINDOW_WIDTH:
1505         s->twoD_window_width = value;
1506         break;
1507     case SM501_2D_SOURCE_BASE:
1508         s->twoD_source_base = value;
1509         break;
1510     case SM501_2D_DESTINATION_BASE:
1511         s->twoD_destination_base = value;
1512         break;
1513     case SM501_2D_ALPHA:
1514         s->twoD_alpha = value;
1515         break;
1516     case SM501_2D_WRAP:
1517         s->twoD_wrap = value;
1518         break;
1519     case SM501_2D_STATUS:
1520         /* ignored, writing 0 should clear interrupt status */
1521         break;
1522     default:
1523         printf("sm501 2d engine : not implemented register write."
1524                " addr=%x, val=%x\n", (int)addr, (unsigned)value);
1525         abort();
1526     }
1527 }
1528 
1529 static const MemoryRegionOps sm501_2d_engine_ops = {
1530     .read = sm501_2d_engine_read,
1531     .write = sm501_2d_engine_write,
1532     .valid = {
1533         .min_access_size = 4,
1534         .max_access_size = 4,
1535     },
1536     .endianness = DEVICE_LITTLE_ENDIAN,
1537 };
1538 
1539 /* draw line functions for all console modes */
1540 
1541 typedef void draw_line_func(uint8_t *d, const uint8_t *s,
1542                             int width, const uint32_t *pal);
1543 
1544 typedef void draw_hwc_line_func(uint8_t *d, const uint8_t *s,
1545                                 int width, const uint8_t *palette,
1546                                 int c_x, int c_y);
1547 
1548 #define DEPTH 8
1549 #include "sm501_template.h"
1550 
1551 #define DEPTH 15
1552 #include "sm501_template.h"
1553 
1554 #define BGR_FORMAT
1555 #define DEPTH 15
1556 #include "sm501_template.h"
1557 
1558 #define DEPTH 16
1559 #include "sm501_template.h"
1560 
1561 #define BGR_FORMAT
1562 #define DEPTH 16
1563 #include "sm501_template.h"
1564 
1565 #define DEPTH 32
1566 #include "sm501_template.h"
1567 
1568 #define BGR_FORMAT
1569 #define DEPTH 32
1570 #include "sm501_template.h"
1571 
1572 static draw_line_func *draw_line8_funcs[] = {
1573     draw_line8_8,
1574     draw_line8_15,
1575     draw_line8_16,
1576     draw_line8_32,
1577     draw_line8_32bgr,
1578     draw_line8_15bgr,
1579     draw_line8_16bgr,
1580 };
1581 
1582 static draw_line_func *draw_line16_funcs[] = {
1583     draw_line16_8,
1584     draw_line16_15,
1585     draw_line16_16,
1586     draw_line16_32,
1587     draw_line16_32bgr,
1588     draw_line16_15bgr,
1589     draw_line16_16bgr,
1590 };
1591 
1592 static draw_line_func *draw_line32_funcs[] = {
1593     draw_line32_8,
1594     draw_line32_15,
1595     draw_line32_16,
1596     draw_line32_32,
1597     draw_line32_32bgr,
1598     draw_line32_15bgr,
1599     draw_line32_16bgr,
1600 };
1601 
1602 static draw_hwc_line_func *draw_hwc_line_funcs[] = {
1603     draw_hwc_line_8,
1604     draw_hwc_line_15,
1605     draw_hwc_line_16,
1606     draw_hwc_line_32,
1607     draw_hwc_line_32bgr,
1608     draw_hwc_line_15bgr,
1609     draw_hwc_line_16bgr,
1610 };
1611 
1612 static inline int get_depth_index(DisplaySurface *surface)
1613 {
1614     switch (surface_bits_per_pixel(surface)) {
1615     default:
1616     case 8:
1617         return 0;
1618     case 15:
1619         return 1;
1620     case 16:
1621         return 2;
1622     case 32:
1623         if (is_surface_bgr(surface)) {
1624             return 4;
1625         } else {
1626             return 3;
1627         }
1628     }
1629 }
1630 
1631 static void sm501_update_display(void *opaque)
1632 {
1633     SM501State *s = (SM501State *)opaque;
1634     DisplaySurface *surface = qemu_console_surface(s->con);
1635     DirtyBitmapSnapshot *snap;
1636     int y, c_x = 0, c_y = 0;
1637     int crt = (s->dc_crt_control & SM501_DC_CRT_CONTROL_SEL) ? 1 : 0;
1638     int width = get_width(s, crt);
1639     int height = get_height(s, crt);
1640     int src_bpp = get_bpp(s, crt);
1641     int dst_bpp = surface_bytes_per_pixel(surface);
1642     int dst_depth_index = get_depth_index(surface);
1643     draw_line_func *draw_line = NULL;
1644     draw_hwc_line_func *draw_hwc_line = NULL;
1645     int full_update = 0;
1646     int y_start = -1;
1647     ram_addr_t offset;
1648     uint32_t *palette;
1649     uint8_t hwc_palette[3 * 3];
1650     uint8_t *hwc_src = NULL;
1651 
1652     if (!((crt ? s->dc_crt_control : s->dc_panel_control)
1653           & SM501_DC_CRT_CONTROL_ENABLE)) {
1654         return;
1655     }
1656 
1657     palette = (uint32_t *)(crt ? &s->dc_palette[SM501_DC_CRT_PALETTE -
1658                                                 SM501_DC_PANEL_PALETTE]
1659                                : &s->dc_palette[0]);
1660 
1661     /* choose draw_line function */
1662     switch (src_bpp) {
1663     case 1:
1664         draw_line = draw_line8_funcs[dst_depth_index];
1665         break;
1666     case 2:
1667         draw_line = draw_line16_funcs[dst_depth_index];
1668         break;
1669     case 4:
1670         draw_line = draw_line32_funcs[dst_depth_index];
1671         break;
1672     default:
1673         printf("sm501 update display : invalid control register value.\n");
1674         abort();
1675         break;
1676     }
1677 
1678     /* set up to draw hardware cursor */
1679     if (is_hwc_enabled(s, crt)) {
1680         /* choose cursor draw line function */
1681         draw_hwc_line = draw_hwc_line_funcs[dst_depth_index];
1682         hwc_src = get_hwc_address(s, crt);
1683         c_x = get_hwc_x(s, crt);
1684         c_y = get_hwc_y(s, crt);
1685         get_hwc_palette(s, crt, hwc_palette);
1686     }
1687 
1688     /* adjust console size */
1689     if (s->last_width != width || s->last_height != height) {
1690         qemu_console_resize(s->con, width, height);
1691         surface = qemu_console_surface(s->con);
1692         s->last_width = width;
1693         s->last_height = height;
1694         full_update = 1;
1695     }
1696 
1697     /* someone else requested a full update */
1698     if (s->do_full_update) {
1699         s->do_full_update = false;
1700         full_update = 1;
1701     }
1702 
1703     /* draw each line according to conditions */
1704     offset = get_fb_addr(s, crt);
1705     snap = memory_region_snapshot_and_clear_dirty(&s->local_mem_region,
1706               offset, width * height * src_bpp, DIRTY_MEMORY_VGA);
1707     for (y = 0; y < height; y++, offset += width * src_bpp) {
1708         int update, update_hwc;
1709 
1710         /* check if hardware cursor is enabled and we're within its range */
1711         update_hwc = draw_hwc_line && c_y <= y && y < c_y + SM501_HWC_HEIGHT;
1712         update = full_update || update_hwc;
1713         /* check dirty flags for each line */
1714         update |= memory_region_snapshot_get_dirty(&s->local_mem_region, snap,
1715                                                    offset, width * src_bpp);
1716 
1717         /* draw line and change status */
1718         if (update) {
1719             uint8_t *d = surface_data(surface);
1720             d +=  y * width * dst_bpp;
1721 
1722             /* draw graphics layer */
1723             draw_line(d, s->local_mem + offset, width, palette);
1724 
1725             /* draw hardware cursor */
1726             if (update_hwc) {
1727                 draw_hwc_line(d, hwc_src, width, hwc_palette, c_x, y - c_y);
1728             }
1729 
1730             if (y_start < 0) {
1731                 y_start = y;
1732             }
1733         } else {
1734             if (y_start >= 0) {
1735                 /* flush to display */
1736                 dpy_gfx_update(s->con, 0, y_start, width, y - y_start);
1737                 y_start = -1;
1738             }
1739         }
1740     }
1741     g_free(snap);
1742 
1743     /* complete flush to display */
1744     if (y_start >= 0) {
1745         dpy_gfx_update(s->con, 0, y_start, width, y - y_start);
1746     }
1747 }
1748 
1749 static const GraphicHwOps sm501_ops = {
1750     .gfx_update  = sm501_update_display,
1751 };
1752 
1753 static void sm501_reset(SM501State *s)
1754 {
1755     s->system_control = 0x00100000; /* 2D engine FIFO empty */
1756     /* Bits 17 (SH), 7 (CDR), 6:5 (Test), 2:0 (Bus) are all supposed
1757      * to be determined at reset by GPIO lines which set config bits.
1758      * We hardwire them:
1759      *  SH = 0 : Hitachi Ready Polarity == Active Low
1760      *  CDR = 0 : do not reset clock divider
1761      *  TEST = 0 : Normal mode (not testing the silicon)
1762      *  BUS = 0 : Hitachi SH3/SH4
1763      */
1764     s->misc_control = SM501_MISC_DAC_POWER;
1765     s->gpio_31_0_control = 0;
1766     s->gpio_63_32_control = 0;
1767     s->dram_control = 0;
1768     s->arbitration_control = 0x05146732;
1769     s->irq_mask = 0;
1770     s->misc_timing = 0;
1771     s->power_mode_control = 0;
1772     s->i2c_byte_count = 0;
1773     s->i2c_status = 0;
1774     s->i2c_addr = 0;
1775     memset(s->i2c_data, 0, 16);
1776     s->dc_panel_control = 0x00010000; /* FIFO level 3 */
1777     s->dc_video_control = 0;
1778     s->dc_crt_control = 0x00010000;
1779     s->twoD_source = 0;
1780     s->twoD_destination = 0;
1781     s->twoD_dimension = 0;
1782     s->twoD_control = 0;
1783     s->twoD_pitch = 0;
1784     s->twoD_foreground = 0;
1785     s->twoD_background = 0;
1786     s->twoD_stretch = 0;
1787     s->twoD_color_compare = 0;
1788     s->twoD_color_compare_mask = 0;
1789     s->twoD_mask = 0;
1790     s->twoD_clip_tl = 0;
1791     s->twoD_clip_br = 0;
1792     s->twoD_mono_pattern_low = 0;
1793     s->twoD_mono_pattern_high = 0;
1794     s->twoD_window_width = 0;
1795     s->twoD_source_base = 0;
1796     s->twoD_destination_base = 0;
1797     s->twoD_alpha = 0;
1798     s->twoD_wrap = 0;
1799 }
1800 
1801 static void sm501_init(SM501State *s, DeviceState *dev,
1802                        uint32_t local_mem_bytes)
1803 {
1804     s->local_mem_size_index = get_local_mem_size_index(local_mem_bytes);
1805     SM501_DPRINTF("sm501 local mem size=%x. index=%d\n", get_local_mem_size(s),
1806                   s->local_mem_size_index);
1807 
1808     /* local memory */
1809     memory_region_init_ram(&s->local_mem_region, OBJECT(dev), "sm501.local",
1810                            get_local_mem_size(s), &error_fatal);
1811     memory_region_set_log(&s->local_mem_region, true, DIRTY_MEMORY_VGA);
1812     s->local_mem = memory_region_get_ram_ptr(&s->local_mem_region);
1813 
1814     /* i2c */
1815     s->i2c_bus = i2c_init_bus(dev, "sm501.i2c");
1816     /* ddc */
1817     I2CDDCState *ddc = I2CDDC(qdev_create(BUS(s->i2c_bus), TYPE_I2CDDC));
1818     i2c_set_slave_address(I2C_SLAVE(ddc), 0x50);
1819 
1820     /* mmio */
1821     memory_region_init(&s->mmio_region, OBJECT(dev), "sm501.mmio", MMIO_SIZE);
1822     memory_region_init_io(&s->system_config_region, OBJECT(dev),
1823                           &sm501_system_config_ops, s,
1824                           "sm501-system-config", 0x6c);
1825     memory_region_add_subregion(&s->mmio_region, SM501_SYS_CONFIG,
1826                                 &s->system_config_region);
1827     memory_region_init_io(&s->i2c_region, OBJECT(dev), &sm501_i2c_ops, s,
1828                           "sm501-i2c", 0x14);
1829     memory_region_add_subregion(&s->mmio_region, SM501_I2C, &s->i2c_region);
1830     memory_region_init_io(&s->disp_ctrl_region, OBJECT(dev),
1831                           &sm501_disp_ctrl_ops, s,
1832                           "sm501-disp-ctrl", 0x1000);
1833     memory_region_add_subregion(&s->mmio_region, SM501_DC,
1834                                 &s->disp_ctrl_region);
1835     memory_region_init_io(&s->twoD_engine_region, OBJECT(dev),
1836                           &sm501_2d_engine_ops, s,
1837                           "sm501-2d-engine", 0x54);
1838     memory_region_add_subregion(&s->mmio_region, SM501_2D_ENGINE,
1839                                 &s->twoD_engine_region);
1840 
1841     /* create qemu graphic console */
1842     s->con = graphic_console_init(DEVICE(dev), 0, &sm501_ops, s);
1843 }
1844 
1845 static const VMStateDescription vmstate_sm501_state = {
1846     .name = "sm501-state",
1847     .version_id = 1,
1848     .minimum_version_id = 1,
1849     .fields = (VMStateField[]) {
1850         VMSTATE_UINT32(local_mem_size_index, SM501State),
1851         VMSTATE_UINT32(system_control, SM501State),
1852         VMSTATE_UINT32(misc_control, SM501State),
1853         VMSTATE_UINT32(gpio_31_0_control, SM501State),
1854         VMSTATE_UINT32(gpio_63_32_control, SM501State),
1855         VMSTATE_UINT32(dram_control, SM501State),
1856         VMSTATE_UINT32(arbitration_control, SM501State),
1857         VMSTATE_UINT32(irq_mask, SM501State),
1858         VMSTATE_UINT32(misc_timing, SM501State),
1859         VMSTATE_UINT32(power_mode_control, SM501State),
1860         VMSTATE_UINT32(uart0_ier, SM501State),
1861         VMSTATE_UINT32(uart0_lcr, SM501State),
1862         VMSTATE_UINT32(uart0_mcr, SM501State),
1863         VMSTATE_UINT32(uart0_scr, SM501State),
1864         VMSTATE_UINT8_ARRAY(dc_palette, SM501State, DC_PALETTE_ENTRIES),
1865         VMSTATE_UINT32(dc_panel_control, SM501State),
1866         VMSTATE_UINT32(dc_panel_panning_control, SM501State),
1867         VMSTATE_UINT32(dc_panel_fb_addr, SM501State),
1868         VMSTATE_UINT32(dc_panel_fb_offset, SM501State),
1869         VMSTATE_UINT32(dc_panel_fb_width, SM501State),
1870         VMSTATE_UINT32(dc_panel_fb_height, SM501State),
1871         VMSTATE_UINT32(dc_panel_tl_location, SM501State),
1872         VMSTATE_UINT32(dc_panel_br_location, SM501State),
1873         VMSTATE_UINT32(dc_panel_h_total, SM501State),
1874         VMSTATE_UINT32(dc_panel_h_sync, SM501State),
1875         VMSTATE_UINT32(dc_panel_v_total, SM501State),
1876         VMSTATE_UINT32(dc_panel_v_sync, SM501State),
1877         VMSTATE_UINT32(dc_panel_hwc_addr, SM501State),
1878         VMSTATE_UINT32(dc_panel_hwc_location, SM501State),
1879         VMSTATE_UINT32(dc_panel_hwc_color_1_2, SM501State),
1880         VMSTATE_UINT32(dc_panel_hwc_color_3, SM501State),
1881         VMSTATE_UINT32(dc_video_control, SM501State),
1882         VMSTATE_UINT32(dc_crt_control, SM501State),
1883         VMSTATE_UINT32(dc_crt_fb_addr, SM501State),
1884         VMSTATE_UINT32(dc_crt_fb_offset, SM501State),
1885         VMSTATE_UINT32(dc_crt_h_total, SM501State),
1886         VMSTATE_UINT32(dc_crt_h_sync, SM501State),
1887         VMSTATE_UINT32(dc_crt_v_total, SM501State),
1888         VMSTATE_UINT32(dc_crt_v_sync, SM501State),
1889         VMSTATE_UINT32(dc_crt_hwc_addr, SM501State),
1890         VMSTATE_UINT32(dc_crt_hwc_location, SM501State),
1891         VMSTATE_UINT32(dc_crt_hwc_color_1_2, SM501State),
1892         VMSTATE_UINT32(dc_crt_hwc_color_3, SM501State),
1893         VMSTATE_UINT32(twoD_source, SM501State),
1894         VMSTATE_UINT32(twoD_destination, SM501State),
1895         VMSTATE_UINT32(twoD_dimension, SM501State),
1896         VMSTATE_UINT32(twoD_control, SM501State),
1897         VMSTATE_UINT32(twoD_pitch, SM501State),
1898         VMSTATE_UINT32(twoD_foreground, SM501State),
1899         VMSTATE_UINT32(twoD_background, SM501State),
1900         VMSTATE_UINT32(twoD_stretch, SM501State),
1901         VMSTATE_UINT32(twoD_color_compare, SM501State),
1902         VMSTATE_UINT32(twoD_color_compare_mask, SM501State),
1903         VMSTATE_UINT32(twoD_mask, SM501State),
1904         VMSTATE_UINT32(twoD_clip_tl, SM501State),
1905         VMSTATE_UINT32(twoD_clip_br, SM501State),
1906         VMSTATE_UINT32(twoD_mono_pattern_low, SM501State),
1907         VMSTATE_UINT32(twoD_mono_pattern_high, SM501State),
1908         VMSTATE_UINT32(twoD_window_width, SM501State),
1909         VMSTATE_UINT32(twoD_source_base, SM501State),
1910         VMSTATE_UINT32(twoD_destination_base, SM501State),
1911         VMSTATE_UINT32(twoD_alpha, SM501State),
1912         VMSTATE_UINT32(twoD_wrap, SM501State),
1913         /* Added in version 2 */
1914         VMSTATE_UINT8(i2c_byte_count, SM501State),
1915         VMSTATE_UINT8(i2c_status, SM501State),
1916         VMSTATE_UINT8(i2c_addr, SM501State),
1917         VMSTATE_UINT8_ARRAY(i2c_data, SM501State, 16),
1918         VMSTATE_END_OF_LIST()
1919      }
1920 };
1921 
1922 #define TYPE_SYSBUS_SM501 "sysbus-sm501"
1923 #define SYSBUS_SM501(obj) \
1924     OBJECT_CHECK(SM501SysBusState, (obj), TYPE_SYSBUS_SM501)
1925 
1926 typedef struct {
1927     /*< private >*/
1928     SysBusDevice parent_obj;
1929     /*< public >*/
1930     SM501State state;
1931     uint32_t vram_size;
1932     uint32_t base;
1933     void *chr_state;
1934 } SM501SysBusState;
1935 
1936 static void sm501_realize_sysbus(DeviceState *dev, Error **errp)
1937 {
1938     SM501SysBusState *s = SYSBUS_SM501(dev);
1939     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
1940     DeviceState *usb_dev;
1941 
1942     sm501_init(&s->state, dev, s->vram_size);
1943     if (get_local_mem_size(&s->state) != s->vram_size) {
1944         error_setg(errp, "Invalid VRAM size, nearest valid size is %" PRIu32,
1945                    get_local_mem_size(&s->state));
1946         return;
1947     }
1948     sysbus_init_mmio(sbd, &s->state.local_mem_region);
1949     sysbus_init_mmio(sbd, &s->state.mmio_region);
1950 
1951     /* bridge to usb host emulation module */
1952     usb_dev = qdev_create(NULL, "sysbus-ohci");
1953     qdev_prop_set_uint32(usb_dev, "num-ports", 2);
1954     qdev_prop_set_uint64(usb_dev, "dma-offset", s->base);
1955     qdev_init_nofail(usb_dev);
1956     memory_region_add_subregion(&s->state.mmio_region, SM501_USB_HOST,
1957                        sysbus_mmio_get_region(SYS_BUS_DEVICE(usb_dev), 0));
1958     sysbus_pass_irq(sbd, SYS_BUS_DEVICE(usb_dev));
1959 
1960     /* bridge to serial emulation module */
1961     if (s->chr_state) {
1962         serial_mm_init(&s->state.mmio_region, SM501_UART0, 2,
1963                        NULL, /* TODO : chain irq to IRL */
1964                        115200, s->chr_state, DEVICE_LITTLE_ENDIAN);
1965     }
1966 }
1967 
1968 static Property sm501_sysbus_properties[] = {
1969     DEFINE_PROP_UINT32("vram-size", SM501SysBusState, vram_size, 0),
1970     DEFINE_PROP_UINT32("base", SM501SysBusState, base, 0),
1971     DEFINE_PROP_PTR("chr-state", SM501SysBusState, chr_state),
1972     DEFINE_PROP_END_OF_LIST(),
1973 };
1974 
1975 static void sm501_reset_sysbus(DeviceState *dev)
1976 {
1977     SM501SysBusState *s = SYSBUS_SM501(dev);
1978     sm501_reset(&s->state);
1979 }
1980 
1981 static const VMStateDescription vmstate_sm501_sysbus = {
1982     .name = TYPE_SYSBUS_SM501,
1983     .version_id = 2,
1984     .minimum_version_id = 2,
1985     .fields = (VMStateField[]) {
1986         VMSTATE_STRUCT(state, SM501SysBusState, 1,
1987                        vmstate_sm501_state, SM501State),
1988         VMSTATE_END_OF_LIST()
1989      }
1990 };
1991 
1992 static void sm501_sysbus_class_init(ObjectClass *klass, void *data)
1993 {
1994     DeviceClass *dc = DEVICE_CLASS(klass);
1995 
1996     dc->realize = sm501_realize_sysbus;
1997     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
1998     dc->desc = "SM501 Multimedia Companion";
1999     dc->props = sm501_sysbus_properties;
2000     dc->reset = sm501_reset_sysbus;
2001     dc->vmsd = &vmstate_sm501_sysbus;
2002     /* Note: pointer property "chr-state" may remain null, thus
2003      * no need for dc->user_creatable = false;
2004      */
2005 }
2006 
2007 static const TypeInfo sm501_sysbus_info = {
2008     .name          = TYPE_SYSBUS_SM501,
2009     .parent        = TYPE_SYS_BUS_DEVICE,
2010     .instance_size = sizeof(SM501SysBusState),
2011     .class_init    = sm501_sysbus_class_init,
2012 };
2013 
2014 #define TYPE_PCI_SM501 "sm501"
2015 #define PCI_SM501(obj) OBJECT_CHECK(SM501PCIState, (obj), TYPE_PCI_SM501)
2016 
2017 typedef struct {
2018     /*< private >*/
2019     PCIDevice parent_obj;
2020     /*< public >*/
2021     SM501State state;
2022     uint32_t vram_size;
2023 } SM501PCIState;
2024 
2025 static void sm501_realize_pci(PCIDevice *dev, Error **errp)
2026 {
2027     SM501PCIState *s = PCI_SM501(dev);
2028 
2029     sm501_init(&s->state, DEVICE(dev), s->vram_size);
2030     if (get_local_mem_size(&s->state) != s->vram_size) {
2031         error_setg(errp, "Invalid VRAM size, nearest valid size is %" PRIu32,
2032                    get_local_mem_size(&s->state));
2033         return;
2034     }
2035     pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY,
2036                      &s->state.local_mem_region);
2037     pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY,
2038                      &s->state.mmio_region);
2039 }
2040 
2041 static Property sm501_pci_properties[] = {
2042     DEFINE_PROP_UINT32("vram-size", SM501PCIState, vram_size, 64 * MiB),
2043     DEFINE_PROP_END_OF_LIST(),
2044 };
2045 
2046 static void sm501_reset_pci(DeviceState *dev)
2047 {
2048     SM501PCIState *s = PCI_SM501(dev);
2049     sm501_reset(&s->state);
2050     /* Bits 2:0 of misc_control register is 001 for PCI */
2051     s->state.misc_control |= 1;
2052 }
2053 
2054 static const VMStateDescription vmstate_sm501_pci = {
2055     .name = TYPE_PCI_SM501,
2056     .version_id = 2,
2057     .minimum_version_id = 2,
2058     .fields = (VMStateField[]) {
2059         VMSTATE_PCI_DEVICE(parent_obj, SM501PCIState),
2060         VMSTATE_STRUCT(state, SM501PCIState, 1,
2061                        vmstate_sm501_state, SM501State),
2062         VMSTATE_END_OF_LIST()
2063      }
2064 };
2065 
2066 static void sm501_pci_class_init(ObjectClass *klass, void *data)
2067 {
2068     DeviceClass *dc = DEVICE_CLASS(klass);
2069     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
2070 
2071     k->realize = sm501_realize_pci;
2072     k->vendor_id = PCI_VENDOR_ID_SILICON_MOTION;
2073     k->device_id = PCI_DEVICE_ID_SM501;
2074     k->class_id = PCI_CLASS_DISPLAY_OTHER;
2075     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
2076     dc->desc = "SM501 Display Controller";
2077     dc->props = sm501_pci_properties;
2078     dc->reset = sm501_reset_pci;
2079     dc->hotpluggable = false;
2080     dc->vmsd = &vmstate_sm501_pci;
2081 }
2082 
2083 static const TypeInfo sm501_pci_info = {
2084     .name          = TYPE_PCI_SM501,
2085     .parent        = TYPE_PCI_DEVICE,
2086     .instance_size = sizeof(SM501PCIState),
2087     .class_init    = sm501_pci_class_init,
2088     .interfaces = (InterfaceInfo[]) {
2089         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
2090         { },
2091     },
2092 };
2093 
2094 static void sm501_register_types(void)
2095 {
2096     type_register_static(&sm501_sysbus_info);
2097     type_register_static(&sm501_pci_info);
2098 }
2099 
2100 type_init(sm501_register_types)
2101