*/
#include <stdio.h>
-#include <stdint.h>
#include <string.h>
+#include "gpu.h"
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define unlikely(x) __builtin_expect((x), 0)
-#define CMD_BUFFER_LEN 1024
-
-static struct __attribute__((aligned(64))) {
- uint16_t vram[1024 * 512];
- uint16_t guard[1024 * 512]; // overdraw guard
- uint32_t cmd_buffer[CMD_BUFFER_LEN];
- uint32_t regs[16];
- union {
- uint32_t reg;
- struct {
- uint32_t tx:4; // 0 texture page
- uint32_t ty:1;
- uint32_t abr:2;
- uint32_t tp:2; // 7 t.p. mode (4,8,15bpp)
- uint32_t dtd:1; // 9 dither
- uint32_t dfe:1;
- uint32_t md:1; // 11 set mask bit when drawing
- uint32_t me:1; // 12 no draw on mask
- uint32_t unkn:3;
- uint32_t width1:1; // 16
- uint32_t width0:2;
- uint32_t dheight:1; // 19 double height
- uint32_t video:1; // 20 NTSC,PAL
- uint32_t rgb24:1;
- uint32_t interlace:1; // 22 interlace on
- uint32_t blanking:1; // 23 display not enabled
- uint32_t unkn2:2;
- uint32_t busy:1; // 26 !busy drawing
- uint32_t img:1; // 27 ready to DMA image data
- uint32_t com:1; // 28 ready for commands
- uint32_t dma:2; // 29 off, ?, to vram, from vram
- uint32_t lcf:1; // 31
- };
- } status;
- struct {
- int x, y, w, h;
- int y1, y2;
- } screen;
- struct {
- int x, y, w, h;
- int offset;
- } dma;
- int cmd_len;
- const uint32_t *lcf_hc;
- uint32_t zero;
-} gpu;
+//#define log_io printf
+#define log_io(...)
+#define log_anomaly printf
+
+struct psx_gpu gpu __attribute__((aligned(64)));
long GPUinit(void)
{
+ int ret = vout_init();
gpu.status.reg = 0x14802000;
- return 0;
+ gpu.lcf_hc = &gpu.zero;
+ return ret;
}
long GPUshutdown(void)
{
- return 0;
+ return vout_finish();
}
void GPUwriteStatus(uint32_t data)
gpu.regs[cmd] = data;
}
-static const unsigned char cmd_lengths[256] =
+const unsigned char cmd_lengths[256] =
{
0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
-void do_cmd(uint32_t *list, int count)
-{
- uint32_t *list_end = list + count;
- int cmd;
- //printf("do_cmd %p, %d\n", data, count);
-
- for (; list < list_end; list += 1 + cmd_lengths[cmd])
- {
- cmd = list[0] >> 24;
- switch (cmd)
- {
- case 0xe1:
- gpu.status.reg &= ~0x7ff;
- gpu.status.reg |= list[0] & 0x7ff;
- break;
- case 0xe6:
- gpu.status.reg &= ~0x1800;
- gpu.status.reg |= (list[0] & 3) << 11;
- break;
- }
- if ((cmd & 0xf4) == 0x24) {
- // flat textured prim
- gpu.status.reg &= ~0x1ff;
- gpu.status.reg |= list[4] & 0x1ff;
- }
- else if ((cmd & 0xf4) == 0x34) {
- // shaded textured prim
- gpu.status.reg &= ~0x1ff;
- gpu.status.reg |= list[5] & 0x1ff;
- }
- }
-}
-
#define VRAM_MEM_XY(x, y) &gpu.vram[(y) * 1024 + (x)]
static inline void do_vram_line(int x, int y, uint16_t *mem, int l, int is_read)
{
int len, cmd, start, pos;
- //printf("check_cmd %p, %d\n", data, count);
-
// process buffer
for (start = pos = 0;; )
{
}
while (pos < count) {
- cmd = data[pos] >> 24;
+ uint32_t *list = data + pos;
+ cmd = list[0] >> 24;
len = 1 + cmd_lengths[cmd];
+
//printf(" %3d: %02x %d\n", pos, cmd, len);
+ if ((cmd & 0xf4) == 0x24) {
+ // flat textured prim
+ gpu.status.reg &= ~0x1ff;
+ gpu.status.reg |= list[4] & 0x1ff;
+ }
+ else if ((cmd & 0xf4) == 0x34) {
+ // shaded textured prim
+ gpu.status.reg &= ~0x1ff;
+ gpu.status.reg |= list[5] & 0x1ff;
+ }
+ else switch (cmd)
+ {
+ case 0xe1:
+ gpu.status.reg &= ~0x7ff;
+ gpu.status.reg |= list[0] & 0x7ff;
+ break;
+ case 0xe6:
+ gpu.status.reg &= ~0x1800;
+ gpu.status.reg |= (list[0] & 3) << 11;
+ break;
+ }
+
if (pos + len > count) {
cmd = -1;
break; // incomplete cmd
}
if (pos - start > 0) {
- do_cmd(data + start, pos - start);
+ do_cmd_list(data + start, pos - start);
start = pos;
}
pos += len;
}
- if (pos == count)
+ if (pos >= count)
return 0;
if (pos + len > count) {
{
int left;
+ log_io("gpu_dma_write %p %d\n", mem, count);
+
if (unlikely(gpu.cmd_len > 0))
flush_cmd_buffer();
+
left = check_cmd(mem, count);
if (left)
- printf("GPUwriteDataMem: discarded %d/%d words\n", left, count);
+ log_anomaly("GPUwriteDataMem: discarded %d/%d words\n", left, count);
}
void GPUwriteData(uint32_t data)
{
+ log_io("gpu_write %08x\n", data);
gpu.cmd_buffer[gpu.cmd_len++] = data;
if (gpu.cmd_len >= CMD_BUFFER_LEN)
flush_cmd_buffer();
long GPUdmaChain(uint32_t *base, uint32_t addr)
{
uint32_t *list;
- int len;
+ int len, left;
if (unlikely(gpu.cmd_len > 0))
flush_cmd_buffer();
+ log_io("gpu_dma_chain\n");
while (addr != 0xffffff) {
+ log_io(".chain %08x\n", addr);
+
list = base + (addr & 0x1fffff) / 4;
len = list[0] >> 24;
addr = list[0] & 0xffffff;
- if (len)
- GPUwriteDataMem(list + 1, len);
+ if (len) {
+ left = check_cmd(list + 1, len);
+ if (left)
+ log_anomaly("GPUwriteDataMem: discarded %d/%d words\n", left, len);
+ }
}
return 0;
void GPUreadDataMem(uint32_t *mem, int count)
{
+ log_io("gpu_dma_read %p %d\n", mem, count);
+
if (unlikely(gpu.cmd_len > 0))
flush_cmd_buffer();
+
if (gpu.dma.h)
do_vram_io(mem, count, 1);
}
uint32_t GPUreadData(void)
{
uint32_t v = 0;
- GPUreadDataMem(&v, 1);
+
+ log_io("gpu_read\n");
+
+ if (unlikely(gpu.cmd_len > 0))
+ flush_cmd_buffer();
+
+ if (gpu.dma.h)
+ do_vram_io(&v, 1, 1);
+
return v;
}
uint32_t GPUreadStatus(void)
{
+ log_io("gpu_read_status\n");
+
if (unlikely(gpu.cmd_len > 0))
flush_cmd_buffer();
}
}
-// rearmed specific
-
-#include "../../frontend/plugin_lib.h"
-#include "../../frontend/arm_utils.h"
-
-static const struct rearmed_cbs *cbs;
-static void *screen_buf;
-
-static void blit(void)
-{
- static uint32_t old_status, old_h;
- int x = gpu.screen.x & ~3; // alignment needed by blitter
- int y = gpu.screen.y;
- int w = gpu.screen.w;
- int h;
- uint16_t *srcs;
- uint8_t *dest;
-
- srcs = &gpu.vram[y * 1024 + x];
-
- h = gpu.screen.y2 - gpu.screen.y1;
- if (gpu.status.dheight)
- h *= 2;
-
- if (h <= 0)
- return;
-
- if ((gpu.status.reg ^ old_status) & ((7<<16)|(1<<21)) || h != old_h) // width|rgb24 change?
- {
- old_status = gpu.status.reg;
- old_h = h;
- screen_buf = cbs->pl_fbdev_set_mode(w, h, gpu.status.rgb24 ? 24 : 16);
- }
- dest = screen_buf;
-
- if (gpu.status.rgb24)
- {
-#ifndef MAEMO
- for (; h-- > 0; dest += w * 3, srcs += 1024)
- {
- bgr888_to_rgb888(dest, srcs, w * 3);
- }
-#else
- for (; h-- > 0; dest += w * 2, srcs += 1024)
- {
- bgr888_to_rgb565(dest, srcs, w * 3);
- }
-#endif
- }
- else
- {
- for (; h-- > 0; dest += w * 2, srcs += 1024)
- {
- bgr555_to_rgb565(dest, srcs, w * 2);
- }
- }
-
- screen_buf = cbs->pl_fbdev_flip();
-}
-
-void GPUupdateLace(void)
-{
- if (!gpu.status.blanking)
- blit();
-}
-
-long GPUopen(void)
-{
- cbs->pl_fbdev_open();
- screen_buf = cbs->pl_fbdev_flip();
- return 0;
-}
-
-long GPUclose(void)
-{
- cbs->pl_fbdev_close();
- return 0;
-}
-
-void GPUrearmedCallbacks(const struct rearmed_cbs *cbs_)
-{
- cbs = cbs_;
-}
-
// vim:shiftwidth=2:expandtab
notaz.gp2x.de / pcsx_rearmed.git / blobdiff