2 * Arm PrimeCell PL110 Color LCD Controller
4 * Copyright (c) 2005-2009 CodeSourcery.
5 * Written by Paul Brook
7 * This code is licensed under the GNU LGPL
10 #include "qemu/osdep.h"
12 #include "hw/sysbus.h"
13 #include "migration/vmstate.h"
14 #include "ui/console.h"
15 #include "framebuffer.h"
16 #include "ui/pixel_ops.h"
17 #include "qemu/timer.h"
19 #include "qemu/module.h"
20 #include "qom/object.h"
22 #define PL110_CR_EN 0x001
23 #define PL110_CR_BGR 0x100
24 #define PL110_CR_BEBO 0x200
25 #define PL110_CR_BEPO 0x400
26 #define PL110_CR_PWR 0x800
27 #define PL110_IE_NB 0x004
28 #define PL110_IE_VC 0x008
38 BPP_16_565, /* PL111 only */
39 BPP_12 /* PL111 only */
43 /* The Versatile/PB uses a slightly modified PL110 controller. */
47 VERSION_PL110_VERSATILE,
51 #define TYPE_PL110 "pl110"
52 OBJECT_DECLARE_SIMPLE_TYPE(PL110State, PL110)
55 SysBusDevice parent_obj;
58 MemoryRegionSection fbsection;
60 QEMUTimer *vblank_timer;
71 enum pl110_bppmode bpp;
74 uint32_t palette[256];
75 uint32_t raw_palette[128];
79 static int vmstate_pl110_post_load(void *opaque, int version_id);
81 static const VMStateDescription vmstate_pl110 = {
84 .minimum_version_id = 1,
85 .post_load = vmstate_pl110_post_load,
86 .fields = (VMStateField[]) {
87 VMSTATE_INT32(version, PL110State),
88 VMSTATE_UINT32_ARRAY(timing, PL110State, 4),
89 VMSTATE_UINT32(cr, PL110State),
90 VMSTATE_UINT32(upbase, PL110State),
91 VMSTATE_UINT32(lpbase, PL110State),
92 VMSTATE_UINT32(int_status, PL110State),
93 VMSTATE_UINT32(int_mask, PL110State),
94 VMSTATE_INT32(cols, PL110State),
95 VMSTATE_INT32(rows, PL110State),
96 VMSTATE_UINT32(bpp, PL110State),
97 VMSTATE_INT32(invalidate, PL110State),
98 VMSTATE_UINT32_ARRAY(palette, PL110State, 256),
99 VMSTATE_UINT32_ARRAY(raw_palette, PL110State, 128),
100 VMSTATE_UINT32_V(mux_ctrl, PL110State, 2),
101 VMSTATE_END_OF_LIST()
105 static const unsigned char pl110_id[] =
106 { 0x10, 0x11, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
108 static const unsigned char pl111_id[] = {
109 0x11, 0x11, 0x24, 0x00, 0x0d, 0xf0, 0x05, 0xb1
113 /* Indexed by pl110_version */
114 static const unsigned char *idregs[] = {
116 /* The ARM documentation (DDI0224C) says the CLCDC on the Versatile board
117 * has a different ID (0x93, 0x10, 0x04, 0x00, ...). However the hardware
118 * itself has the same ID values as a stock PL110, and guests (in
119 * particular Linux) rely on this. We emulate what the hardware does,
120 * rather than what the docs claim it ought to do.
126 #define COPY_PIXEL(to, from) do { *(uint32_t *)to = from; to += 4; } while (0)
131 #include "pl110_template.h"
133 #include "pl110_template.h"
135 #include "pl110_template.h"
140 #include "pl110_template.h"
142 #include "pl110_template.h"
144 #include "pl110_template.h"
149 static drawfn pl110_draw_fn_32[48] = {
150 pl110_draw_line1_lblp_bgr,
151 pl110_draw_line2_lblp_bgr,
152 pl110_draw_line4_lblp_bgr,
153 pl110_draw_line8_lblp_bgr,
154 pl110_draw_line16_555_lblp_bgr,
155 pl110_draw_line32_lblp_bgr,
156 pl110_draw_line16_lblp_bgr,
157 pl110_draw_line12_lblp_bgr,
159 pl110_draw_line1_bbbp_bgr,
160 pl110_draw_line2_bbbp_bgr,
161 pl110_draw_line4_bbbp_bgr,
162 pl110_draw_line8_bbbp_bgr,
163 pl110_draw_line16_555_bbbp_bgr,
164 pl110_draw_line32_bbbp_bgr,
165 pl110_draw_line16_bbbp_bgr,
166 pl110_draw_line12_bbbp_bgr,
168 pl110_draw_line1_lbbp_bgr,
169 pl110_draw_line2_lbbp_bgr,
170 pl110_draw_line4_lbbp_bgr,
171 pl110_draw_line8_lbbp_bgr,
172 pl110_draw_line16_555_lbbp_bgr,
173 pl110_draw_line32_lbbp_bgr,
174 pl110_draw_line16_lbbp_bgr,
175 pl110_draw_line12_lbbp_bgr,
177 pl110_draw_line1_lblp_rgb,
178 pl110_draw_line2_lblp_rgb,
179 pl110_draw_line4_lblp_rgb,
180 pl110_draw_line8_lblp_rgb,
181 pl110_draw_line16_555_lblp_rgb,
182 pl110_draw_line32_lblp_rgb,
183 pl110_draw_line16_lblp_rgb,
184 pl110_draw_line12_lblp_rgb,
186 pl110_draw_line1_bbbp_rgb,
187 pl110_draw_line2_bbbp_rgb,
188 pl110_draw_line4_bbbp_rgb,
189 pl110_draw_line8_bbbp_rgb,
190 pl110_draw_line16_555_bbbp_rgb,
191 pl110_draw_line32_bbbp_rgb,
192 pl110_draw_line16_bbbp_rgb,
193 pl110_draw_line12_bbbp_rgb,
195 pl110_draw_line1_lbbp_rgb,
196 pl110_draw_line2_lbbp_rgb,
197 pl110_draw_line4_lbbp_rgb,
198 pl110_draw_line8_lbbp_rgb,
199 pl110_draw_line16_555_lbbp_rgb,
200 pl110_draw_line32_lbbp_rgb,
201 pl110_draw_line16_lbbp_rgb,
202 pl110_draw_line12_lbbp_rgb,
205 static int pl110_enabled(PL110State *s)
207 return (s->cr & PL110_CR_EN) && (s->cr & PL110_CR_PWR);
210 static void pl110_update_display(void *opaque)
212 PL110State *s = (PL110State *)opaque;
214 DisplaySurface *surface = qemu_console_surface(s->con);
221 if (!pl110_enabled(s)) {
225 sbd = SYS_BUS_DEVICE(s);
227 if (s->cr & PL110_CR_BGR)
232 if ((s->version != VERSION_PL111) && (s->bpp == BPP_16)) {
233 /* The PL110's native 16 bit mode is 5551; however
234 * most boards with a PL110 implement an external
235 * mux which allows bits to be reshuffled to give
236 * 565 format. The mux is typically controlled by
237 * an external system register.
238 * This is controlled by a GPIO input pin
239 * so boards can wire it up to their register.
241 * The PL111 straightforwardly implements both
242 * 5551 and 565 under control of the bpp field
243 * in the LCDControl register.
245 switch (s->mux_ctrl) {
246 case 3: /* 565 BGR */
247 bpp_offset = (BPP_16_565 - BPP_16);
251 case 0: /* 888; also if we have loaded vmstate from an old version */
252 case 2: /* 565 RGB */
254 /* treat as 565 but honour BGR bit */
255 bpp_offset += (BPP_16_565 - BPP_16);
260 if (s->cr & PL110_CR_BEBO) {
261 fn = pl110_draw_fn_32[s->bpp + 8 + bpp_offset];
262 } else if (s->cr & PL110_CR_BEPO) {
263 fn = pl110_draw_fn_32[s->bpp + 16 + bpp_offset];
265 fn = pl110_draw_fn_32[s->bpp + bpp_offset];
292 framebuffer_update_memory_section(&s->fbsection,
293 sysbus_address_space(sbd),
298 framebuffer_update_display(surface, &s->fbsection,
300 src_width, s->cols * 4, 0,
306 dpy_gfx_update(s->con, 0, first, s->cols, last - first + 1);
311 static void pl110_invalidate_display(void * opaque)
313 PL110State *s = (PL110State *)opaque;
315 if (pl110_enabled(s)) {
316 qemu_console_resize(s->con, s->cols, s->rows);
320 static void pl110_update_palette(PL110State *s, int n)
322 DisplaySurface *surface = qemu_console_surface(s->con);
325 unsigned int r, g, b;
327 raw = s->raw_palette[n];
329 for (i = 0; i < 2; i++) {
330 r = (raw & 0x1f) << 3;
332 g = (raw & 0x1f) << 3;
334 b = (raw & 0x1f) << 3;
335 /* The I bit is ignored. */
337 switch (surface_bits_per_pixel(surface)) {
339 s->palette[n] = rgb_to_pixel8(r, g, b);
342 s->palette[n] = rgb_to_pixel15(r, g, b);
345 s->palette[n] = rgb_to_pixel16(r, g, b);
349 s->palette[n] = rgb_to_pixel32(r, g, b);
356 static void pl110_resize(PL110State *s, int width, int height)
358 if (width != s->cols || height != s->rows) {
359 if (pl110_enabled(s)) {
360 qemu_console_resize(s->con, width, height);
367 /* Update interrupts. */
368 static void pl110_update(PL110State *s)
370 /* Raise IRQ if enabled and any status bit is 1 */
371 if (s->int_status & s->int_mask) {
372 qemu_irq_raise(s->irq);
374 qemu_irq_lower(s->irq);
378 static void pl110_vblank_interrupt(void *opaque)
380 PL110State *s = opaque;
382 /* Fire the vertical compare and next base IRQs and re-arm */
383 s->int_status |= (PL110_IE_NB | PL110_IE_VC);
384 timer_mod(s->vblank_timer,
385 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
386 NANOSECONDS_PER_SECOND / 60);
390 static uint64_t pl110_read(void *opaque, hwaddr offset,
393 PL110State *s = (PL110State *)opaque;
395 if (offset >= 0xfe0 && offset < 0x1000) {
396 return idregs[s->version][(offset - 0xfe0) >> 2];
398 if (offset >= 0x200 && offset < 0x400) {
399 return s->raw_palette[(offset - 0x200) >> 2];
401 switch (offset >> 2) {
402 case 0: /* LCDTiming0 */
404 case 1: /* LCDTiming1 */
406 case 2: /* LCDTiming2 */
408 case 3: /* LCDTiming3 */
410 case 4: /* LCDUPBASE */
412 case 5: /* LCDLPBASE */
414 case 6: /* LCDIMSC */
415 if (s->version != VERSION_PL110) {
419 case 7: /* LCDControl */
420 if (s->version != VERSION_PL110) {
425 return s->int_status;
427 return s->int_status & s->int_mask;
428 case 11: /* LCDUPCURR */
429 /* TODO: Implement vertical refresh. */
431 case 12: /* LCDLPCURR */
434 qemu_log_mask(LOG_GUEST_ERROR,
435 "pl110_read: Bad offset %x\n", (int)offset);
440 static void pl110_write(void *opaque, hwaddr offset,
441 uint64_t val, unsigned size)
443 PL110State *s = (PL110State *)opaque;
446 /* For simplicity invalidate the display whenever a control register
449 if (offset >= 0x200 && offset < 0x400) {
451 n = (offset - 0x200) >> 2;
452 s->raw_palette[(offset - 0x200) >> 2] = val;
453 pl110_update_palette(s, n);
456 switch (offset >> 2) {
457 case 0: /* LCDTiming0 */
459 n = ((val & 0xfc) + 4) * 4;
460 pl110_resize(s, n, s->rows);
462 case 1: /* LCDTiming1 */
464 n = (val & 0x3ff) + 1;
465 pl110_resize(s, s->cols, n);
467 case 2: /* LCDTiming2 */
470 case 3: /* LCDTiming3 */
473 case 4: /* LCDUPBASE */
476 case 5: /* LCDLPBASE */
479 case 6: /* LCDIMSC */
480 if (s->version != VERSION_PL110) {
487 case 7: /* LCDControl */
488 if (s->version != VERSION_PL110) {
493 s->bpp = (val >> 1) & 7;
494 if (pl110_enabled(s)) {
495 qemu_console_resize(s->con, s->cols, s->rows);
496 timer_mod(s->vblank_timer,
497 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
498 NANOSECONDS_PER_SECOND / 60);
500 timer_del(s->vblank_timer);
503 case 10: /* LCDICR */
504 s->int_status &= ~val;
508 qemu_log_mask(LOG_GUEST_ERROR,
509 "pl110_write: Bad offset %x\n", (int)offset);
513 static const MemoryRegionOps pl110_ops = {
515 .write = pl110_write,
516 .endianness = DEVICE_NATIVE_ENDIAN,
519 static void pl110_mux_ctrl_set(void *opaque, int line, int level)
521 PL110State *s = (PL110State *)opaque;
525 static int vmstate_pl110_post_load(void *opaque, int version_id)
527 PL110State *s = opaque;
528 /* Make sure we redraw, and at the right size */
529 pl110_invalidate_display(s);
533 static const GraphicHwOps pl110_gfx_ops = {
534 .invalidate = pl110_invalidate_display,
535 .gfx_update = pl110_update_display,
538 static void pl110_realize(DeviceState *dev, Error **errp)
540 PL110State *s = PL110(dev);
541 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
543 memory_region_init_io(&s->iomem, OBJECT(s), &pl110_ops, s, "pl110", 0x1000);
544 sysbus_init_mmio(sbd, &s->iomem);
545 sysbus_init_irq(sbd, &s->irq);
546 s->vblank_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
547 pl110_vblank_interrupt, s);
548 qdev_init_gpio_in(dev, pl110_mux_ctrl_set, 1);
549 s->con = graphic_console_init(dev, 0, &pl110_gfx_ops, s);
552 static void pl110_init(Object *obj)
554 PL110State *s = PL110(obj);
556 s->version = VERSION_PL110;
559 static void pl110_versatile_init(Object *obj)
561 PL110State *s = PL110(obj);
563 s->version = VERSION_PL110_VERSATILE;
566 static void pl111_init(Object *obj)
568 PL110State *s = PL110(obj);
570 s->version = VERSION_PL111;
573 static void pl110_class_init(ObjectClass *klass, void *data)
575 DeviceClass *dc = DEVICE_CLASS(klass);
577 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
578 dc->vmsd = &vmstate_pl110;
579 dc->realize = pl110_realize;
582 static const TypeInfo pl110_info = {
584 .parent = TYPE_SYS_BUS_DEVICE,
585 .instance_size = sizeof(PL110State),
586 .instance_init = pl110_init,
587 .class_init = pl110_class_init,
590 static const TypeInfo pl110_versatile_info = {
591 .name = "pl110_versatile",
592 .parent = TYPE_PL110,
593 .instance_init = pl110_versatile_init,
596 static const TypeInfo pl111_info = {
598 .parent = TYPE_PL110,
599 .instance_init = pl111_init,
602 static void pl110_register_types(void)
604 type_register_static(&pl110_info);
605 type_register_static(&pl110_versatile_info);
606 type_register_static(&pl111_info);
609 type_init(pl110_register_types)