ESP PIO mode, 2k CDROM sector size (Blue Swirl)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1577 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-10-30 17:24:05 +00:00
parent aea3ce4c8d
commit 4f6200f03b

138
hw/esp.c
View File

@ -36,6 +36,9 @@ do { printf("ESP: " fmt , ##args); } while (0)
#define ESPDMA_REGS 4
#define ESPDMA_MAXADDR (ESPDMA_REGS * 4 - 1)
#define ESP_MAXREG 0x3f
#define TI_BUFSZ 65536
#define DMA_VER 0xa0000000
#define DMA_LOADED 0x04000000
typedef struct ESPState {
BlockDriverState **bd;
@ -44,8 +47,10 @@ typedef struct ESPState {
int irq;
uint32_t espdmaregs[ESPDMA_REGS];
uint32_t ti_size;
uint32_t ti_rptr, ti_wptr;
int ti_dir;
uint8_t ti_buf[65536];
uint8_t ti_buf[TI_BUFSZ];
int dma;
} ESPState;
#define STAT_DO 0x00
@ -73,17 +78,25 @@ static void handle_satn(ESPState *s)
int64_t nb_sectors;
int target;
dmaptr = iommu_translate(s->espdmaregs[1]);
dmalen = s->wregs[0] | (s->wregs[1] << 8);
DPRINTF("Select with ATN at %8.8x len %d\n", dmaptr, dmalen);
DPRINTF("DMA Direction: %c\n", s->espdmaregs[0] & 0x100? 'w': 'r');
target = s->wregs[4] & 7;
DPRINTF("Select with ATN len %d target %d\n", dmalen, target);
if (s->dma) {
dmaptr = iommu_translate(s->espdmaregs[1]);
DPRINTF("DMA Direction: %c, addr 0x%8.8x\n", s->espdmaregs[0] & 0x100? 'w': 'r', dmaptr);
cpu_physical_memory_read(dmaptr, buf, dmalen);
} else {
buf[0] = 0;
memcpy(&buf[1], s->ti_buf, dmalen);
dmalen++;
}
for (i = 0; i < dmalen; i++) {
DPRINTF("Command %2.2x\n", buf[i]);
}
s->ti_dir = 0;
s->ti_size = 0;
target = s->wregs[4] & 7;
s->ti_rptr = 0;
s->ti_wptr = 0;
if (target > 4 || !s->bd[target]) { // No such drive
s->rregs[4] = STAT_IN;
@ -126,7 +139,10 @@ static void handle_satn(ESPState *s)
s->ti_buf[3] = nb_sectors & 0xff;
s->ti_buf[4] = 0;
s->ti_buf[5] = 0;
s->ti_buf[6] = 2;
if (bdrv_get_type_hint(s->bd[target]) == BDRV_TYPE_CDROM)
s->ti_buf[6] = 8; // sector size 2048
else
s->ti_buf[6] = 2; // sector size 512
s->ti_buf[7] = 0;
s->ti_dir = 1;
s->ti_size = 8;
@ -135,28 +151,42 @@ static void handle_satn(ESPState *s)
{
int64_t offset, len;
if (bdrv_get_type_hint(s->bd[target]) == BDRV_TYPE_CDROM) {
offset = ((buf[3] << 24) | (buf[4] << 16) | (buf[5] << 8) | buf[6]) * 4;
len = ((buf[8] << 8) | buf[9]) * 4;
s->ti_size = len * 2048;
} else {
offset = (buf[3] << 24) | (buf[4] << 16) | (buf[5] << 8) | buf[6];
len = (buf[8] << 8) | buf[9];
s->ti_size = len * 512;
}
DPRINTF("Read (10) (offset %lld len %lld)\n", offset, len);
bdrv_read(s->bd[target], offset, s->ti_buf, len);
// XXX error handling
s->ti_dir = 1;
s->ti_size = len * 512;
break;
}
case 0x2a:
{
int64_t offset, len;
if (bdrv_get_type_hint(s->bd[target]) == BDRV_TYPE_CDROM) {
offset = ((buf[3] << 24) | (buf[4] << 16) | (buf[5] << 8) | buf[6]) * 4;
len = ((buf[8] << 8) | buf[9]) * 4;
s->ti_size = len * 2048;
} else {
offset = (buf[3] << 24) | (buf[4] << 16) | (buf[5] << 8) | buf[6];
len = (buf[8] << 8) | buf[9];
s->ti_size = len * 512;
}
DPRINTF("Write (10) (offset %lld len %lld)\n", offset, len);
bdrv_write(s->bd[target], offset, s->ti_buf, len);
// XXX error handling
s->ti_dir = 0;
s->ti_size = len * 512;
break;
}
default:
DPRINTF("Unknown command (%2.2x)\n", buf[1]);
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[1]);
break;
}
s->rregs[4] = STAT_IN | STAT_TC | STAT_DI;
@ -170,17 +200,26 @@ static void dma_write(ESPState *s, const uint8_t *buf, uint32_t len)
{
uint32_t dmaptr, dmalen;
dmaptr = iommu_translate(s->espdmaregs[1]);
dmalen = s->wregs[0] | (s->wregs[1] << 8);
DPRINTF("Transfer status len %d\n", dmalen);
if (s->dma) {
dmaptr = iommu_translate(s->espdmaregs[1]);
DPRINTF("DMA Direction: %c\n", s->espdmaregs[0] & 0x100? 'w': 'r');
cpu_physical_memory_write(dmaptr, buf, len);
s->rregs[4] = STAT_IN | STAT_TC | STAT_ST;
s->rregs[5] = INTR_BS | INTR_FC;
s->rregs[6] = SEQ_CD;
s->espdmaregs[0] |= 1;
} else {
memcpy(s->ti_buf, buf, len);
s->ti_size = dmalen;
s->ti_rptr = 0;
s->ti_wptr = 0;
}
pic_set_irq(s->irq, 1);
}
static const uint8_t okbuf[] = {0, 0};
static void handle_ti(ESPState *s)
@ -188,10 +227,11 @@ static void handle_ti(ESPState *s)
uint32_t dmaptr, dmalen;
unsigned int i;
dmaptr = iommu_translate(s->espdmaregs[1]);
dmalen = s->wregs[0] | (s->wregs[1] << 8);
DPRINTF("Transfer Information at %8.8x len %d\n", dmaptr, dmalen);
DPRINTF("DMA Direction: %c\n", s->espdmaregs[0] & 0x100? 'w': 'r');
DPRINTF("Transfer Information len %d\n", dmalen);
if (s->dma) {
dmaptr = iommu_translate(s->espdmaregs[1]);
DPRINTF("DMA Direction: %c, addr 0x%8.8x\n", s->espdmaregs[0] & 0x100? 'w': 'r', dmaptr);
for (i = 0; i < s->ti_size; i++) {
dmaptr = iommu_translate(s->espdmaregs[1] + i);
if (s->ti_dir)
@ -203,6 +243,11 @@ static void handle_ti(ESPState *s)
s->rregs[5] = INTR_BS;
s->rregs[6] = 0;
s->espdmaregs[0] |= 1;
} else {
s->ti_size = dmalen;
s->ti_rptr = 0;
s->ti_wptr = 0;
}
pic_set_irq(s->irq, 1);
}
@ -221,10 +266,23 @@ static uint32_t esp_mem_readb(void *opaque, target_phys_addr_t addr)
saddr = (addr & ESP_MAXREG) >> 2;
switch (saddr) {
case 2:
// FIFO
if (s->ti_size > 0) {
s->ti_size--;
s->rregs[saddr] = s->ti_buf[s->ti_rptr++];
pic_set_irq(s->irq, 1);
}
if (s->ti_size == 0) {
s->ti_rptr = 0;
s->ti_wptr = 0;
}
break;
default:
break;
}
DPRINTF("read reg[%d]: 0x%2.2x\n", saddr, s->rregs[saddr]);
return s->rregs[saddr];
}
@ -236,8 +294,23 @@ static void esp_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
saddr = (addr & ESP_MAXREG) >> 2;
DPRINTF("write reg[%d]: 0x%2.2x -> 0x%2.2x\n", saddr, s->wregs[saddr], val);
switch (saddr) {
case 0:
case 1:
s->rregs[saddr] = val;
break;
case 2:
// FIFO
s->ti_size++;
s->ti_buf[s->ti_wptr++] = val & 0xff;
break;
case 3:
s->rregs[saddr] = val;
// Command
if (val & 0x80) {
s->dma = 1;
} else {
s->dma = 0;
}
switch(val & 0x7f) {
case 0:
DPRINTF("NOP (%2.2x)\n", val);
@ -278,12 +351,19 @@ static void esp_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
handle_satn(s);
break;
default:
DPRINTF("Unhandled command (%2.2x)\n", val);
DPRINTF("Unhandled ESP command (%2.2x)\n", val);
break;
}
break;
case 4 ... 7:
case 9 ... 0xf:
break;
case 8:
s->rregs[saddr] = val;
break;
case 9 ... 10:
break;
case 11 ... 15:
s->rregs[saddr] = val;
break;
default:
break;
@ -309,7 +389,8 @@ static uint32_t espdma_mem_readl(void *opaque, target_phys_addr_t addr)
uint32_t saddr;
saddr = (addr & ESPDMA_MAXADDR) >> 2;
DPRINTF("read dmareg[%d]: 0x%2.2x\n", saddr, s->espdmaregs[saddr]);
DPRINTF("read dmareg[%d]: 0x%8.8x\n", saddr, s->espdmaregs[saddr]);
return s->espdmaregs[saddr];
}
@ -319,11 +400,22 @@ static void espdma_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t va
uint32_t saddr;
saddr = (addr & ESPDMA_MAXADDR) >> 2;
DPRINTF("write dmareg[%d]: 0x%2.2x -> 0x%2.2x\n", saddr, s->espdmaregs[saddr], val);
DPRINTF("write dmareg[%d]: 0x%8.8x -> 0x%8.8x\n", saddr, s->espdmaregs[saddr], val);
switch (saddr) {
case 0:
if (!(val & 0x10))
pic_set_irq(s->irq, 0);
if (val & 0x80) {
esp_reset(s);
} else if (val & 0x40) {
val &= ~0x40;
} else if (val == 0)
val = 0x40;
val &= 0x0fffffff;
val |= DMA_VER;
break;
case 1:
s->espdmaregs[0] = DMA_LOADED;
break;
default:
break;
@ -353,6 +445,12 @@ static void esp_save(QEMUFile *f, void *opaque)
qemu_put_be32s(f, &s->irq);
for (i = 0; i < ESPDMA_REGS; i++)
qemu_put_be32s(f, &s->espdmaregs[i]);
qemu_put_be32s(f, &s->ti_size);
qemu_put_be32s(f, &s->ti_rptr);
qemu_put_be32s(f, &s->ti_wptr);
qemu_put_be32s(f, &s->ti_dir);
qemu_put_buffer(f, s->ti_buf, TI_BUFSZ);
qemu_put_be32s(f, &s->dma);
}
static int esp_load(QEMUFile *f, void *opaque, int version_id)
@ -368,6 +466,12 @@ static int esp_load(QEMUFile *f, void *opaque, int version_id)
qemu_get_be32s(f, &s->irq);
for (i = 0; i < ESPDMA_REGS; i++)
qemu_get_be32s(f, &s->espdmaregs[i]);
qemu_get_be32s(f, &s->ti_size);
qemu_get_be32s(f, &s->ti_rptr);
qemu_get_be32s(f, &s->ti_wptr);
qemu_get_be32s(f, &s->ti_dir);
qemu_get_buffer(f, s->ti_buf, TI_BUFSZ);
qemu_get_be32s(f, &s->dma);
return 0;
}