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Diffstat (limited to 'hw/scsi/lsi53c895a.c')
-rw-r--r--hw/scsi/lsi53c895a.c280
1 files changed, 195 insertions, 85 deletions
diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
index df205cdafe..feb1191315 100644
--- a/hw/scsi/lsi53c895a.c
+++ b/hw/scsi/lsi53c895a.c
@@ -19,6 +19,7 @@
#include "hw/pci/pci.h"
#include "hw/scsi/scsi.h"
#include "sysemu/dma.h"
+#include "qemu/log.h"
//#define DEBUG_LSI
//#define DEBUG_LSI_REG
@@ -34,6 +35,21 @@ do { fprintf(stderr, "lsi_scsi: error: " fmt , ## __VA_ARGS__); exit(1);} while
do { fprintf(stderr, "lsi_scsi: error: " fmt , ## __VA_ARGS__);} while (0)
#endif
+static const char *names[] = {
+ "SCNTL0", "SCNTL1", "SCNTL2", "SCNTL3", "SCID", "SXFER", "SDID", "GPREG",
+ "SFBR", "SOCL", "SSID", "SBCL", "DSTAT", "SSTAT0", "SSTAT1", "SSTAT2",
+ "DSA0", "DSA1", "DSA2", "DSA3", "ISTAT", "0x15", "0x16", "0x17",
+ "CTEST0", "CTEST1", "CTEST2", "CTEST3", "TEMP0", "TEMP1", "TEMP2", "TEMP3",
+ "DFIFO", "CTEST4", "CTEST5", "CTEST6", "DBC0", "DBC1", "DBC2", "DCMD",
+ "DNAD0", "DNAD1", "DNAD2", "DNAD3", "DSP0", "DSP1", "DSP2", "DSP3",
+ "DSPS0", "DSPS1", "DSPS2", "DSPS3", "SCRATCHA0", "SCRATCHA1", "SCRATCHA2", "SCRATCHA3",
+ "DMODE", "DIEN", "SBR", "DCNTL", "ADDER0", "ADDER1", "ADDER2", "ADDER3",
+ "SIEN0", "SIEN1", "SIST0", "SIST1", "SLPAR", "0x45", "MACNTL", "GPCNTL",
+ "STIME0", "STIME1", "RESPID", "0x4b", "STEST0", "STEST1", "STEST2", "STEST3",
+ "SIDL", "0x51", "0x52", "0x53", "SODL", "0x55", "0x56", "0x57",
+ "SBDL", "0x59", "0x5a", "0x5b", "SCRATCHB0", "SCRATCHB1", "SCRATCHB2", "SCRATCHB3",
+};
+
#define LSI_MAX_DEVS 7
#define LSI_SCNTL0_TRG 0x01
@@ -194,6 +210,7 @@ typedef struct {
MemoryRegion mmio_io;
MemoryRegion ram_io;
MemoryRegion io_io;
+ AddressSpace pci_io_as;
int carry; /* ??? Should this be an a visible register somewhere? */
int status;
@@ -309,7 +326,7 @@ static void lsi_soft_reset(LSIState *s)
s->istat0 = 0;
s->istat1 = 0;
s->dcmd = 0x40;
- s->dstat = LSI_DSTAT_DFE;
+ s->dstat = 0;
s->dien = 0;
s->sist0 = 0;
s->sist1 = 0;
@@ -391,6 +408,30 @@ static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val);
static void lsi_execute_script(LSIState *s);
static void lsi_reselect(LSIState *s, lsi_request *p);
+static inline int lsi_mem_read(LSIState *s, dma_addr_t addr,
+ void *buf, dma_addr_t len)
+{
+ if (s->dmode & LSI_DMODE_SIOM) {
+ address_space_read(&s->pci_io_as, addr, MEMTXATTRS_UNSPECIFIED,
+ buf, len);
+ return 0;
+ } else {
+ return pci_dma_read(PCI_DEVICE(s), addr, buf, len);
+ }
+}
+
+static inline int lsi_mem_write(LSIState *s, dma_addr_t addr,
+ const void *buf, dma_addr_t len)
+{
+ if (s->dmode & LSI_DMODE_DIOM) {
+ address_space_write(&s->pci_io_as, addr, MEMTXATTRS_UNSPECIFIED,
+ buf, len);
+ return 0;
+ } else {
+ return pci_dma_write(PCI_DEVICE(s), addr, buf, len);
+ }
+}
+
static inline uint32_t read_dword(LSIState *s, uint32_t addr)
{
uint32_t buf;
@@ -534,7 +575,6 @@ static void lsi_bad_selection(LSIState *s, uint32_t id)
/* Initiate a SCSI layer data transfer. */
static void lsi_do_dma(LSIState *s, int out)
{
- PCIDevice *pci_dev;
uint32_t count;
dma_addr_t addr;
SCSIDevice *dev;
@@ -546,7 +586,6 @@ static void lsi_do_dma(LSIState *s, int out)
return;
}
- pci_dev = PCI_DEVICE(s);
dev = s->current->req->dev;
assert(dev);
@@ -572,9 +611,9 @@ static void lsi_do_dma(LSIState *s, int out)
}
/* ??? Set SFBR to first data byte. */
if (out) {
- pci_dma_read(pci_dev, addr, s->current->dma_buf, count);
+ lsi_mem_read(s, addr, s->current->dma_buf, count);
} else {
- pci_dma_write(pci_dev, addr, s->current->dma_buf, count);
+ lsi_mem_write(s, addr, s->current->dma_buf, count);
}
s->current->dma_len -= count;
if (s->current->dma_len == 0) {
@@ -1006,15 +1045,14 @@ bad:
#define LSI_BUF_SIZE 4096
static void lsi_memcpy(LSIState *s, uint32_t dest, uint32_t src, int count)
{
- PCIDevice *d = PCI_DEVICE(s);
int n;
uint8_t buf[LSI_BUF_SIZE];
DPRINTF("memcpy dest 0x%08x src 0x%08x count %d\n", dest, src, count);
while (count) {
n = (count > LSI_BUF_SIZE) ? LSI_BUF_SIZE : count;
- pci_dma_read(d, src, buf, n);
- pci_dma_write(d, dest, buf, n);
+ lsi_mem_read(s, src, buf, n);
+ lsi_mem_write(s, dest, buf, n);
src += n;
dest += n;
count -= n;
@@ -1480,155 +1518,200 @@ again:
static uint8_t lsi_reg_readb(LSIState *s, int offset)
{
- uint8_t tmp;
+ uint8_t ret;
+
#define CASE_GET_REG24(name, addr) \
- case addr: return s->name & 0xff; \
- case addr + 1: return (s->name >> 8) & 0xff; \
- case addr + 2: return (s->name >> 16) & 0xff;
+ case addr: ret = s->name & 0xff; break; \
+ case addr + 1: ret = (s->name >> 8) & 0xff; break; \
+ case addr + 2: ret = (s->name >> 16) & 0xff; break;
#define CASE_GET_REG32(name, addr) \
- case addr: return s->name & 0xff; \
- case addr + 1: return (s->name >> 8) & 0xff; \
- case addr + 2: return (s->name >> 16) & 0xff; \
- case addr + 3: return (s->name >> 24) & 0xff;
+ case addr: ret = s->name & 0xff; break; \
+ case addr + 1: ret = (s->name >> 8) & 0xff; break; \
+ case addr + 2: ret = (s->name >> 16) & 0xff; break; \
+ case addr + 3: ret = (s->name >> 24) & 0xff; break;
-#ifdef DEBUG_LSI_REG
- DPRINTF("Read reg %x\n", offset);
-#endif
switch (offset) {
case 0x00: /* SCNTL0 */
- return s->scntl0;
+ ret = s->scntl0;
+ break;
case 0x01: /* SCNTL1 */
- return s->scntl1;
+ ret = s->scntl1;
+ break;
case 0x02: /* SCNTL2 */
- return s->scntl2;
+ ret = s->scntl2;
+ break;
case 0x03: /* SCNTL3 */
- return s->scntl3;
+ ret = s->scntl3;
+ break;
case 0x04: /* SCID */
- return s->scid;
+ ret = s->scid;
+ break;
case 0x05: /* SXFER */
- return s->sxfer;
+ ret = s->sxfer;
+ break;
case 0x06: /* SDID */
- return s->sdid;
+ ret = s->sdid;
+ break;
case 0x07: /* GPREG0 */
- return 0x7f;
+ ret = 0x7f;
+ break;
case 0x08: /* Revision ID */
- return 0x00;
+ ret = 0x00;
+ break;
case 0x09: /* SOCL */
- return s->socl;
+ ret = s->socl;
+ break;
case 0xa: /* SSID */
- return s->ssid;
+ ret = s->ssid;
+ break;
case 0xb: /* SBCL */
/* ??? This is not correct. However it's (hopefully) only
used for diagnostics, so should be ok. */
- return 0;
+ ret = 0;
+ break;
case 0xc: /* DSTAT */
- tmp = s->dstat | LSI_DSTAT_DFE;
+ ret = s->dstat | LSI_DSTAT_DFE;
if ((s->istat0 & LSI_ISTAT0_INTF) == 0)
s->dstat = 0;
lsi_update_irq(s);
- return tmp;
+ break;
case 0x0d: /* SSTAT0 */
- return s->sstat0;
+ ret = s->sstat0;
+ break;
case 0x0e: /* SSTAT1 */
- return s->sstat1;
+ ret = s->sstat1;
+ break;
case 0x0f: /* SSTAT2 */
- return s->scntl1 & LSI_SCNTL1_CON ? 0 : 2;
+ ret = s->scntl1 & LSI_SCNTL1_CON ? 0 : 2;
+ break;
CASE_GET_REG32(dsa, 0x10)
case 0x14: /* ISTAT0 */
- return s->istat0;
+ ret = s->istat0;
+ break;
case 0x15: /* ISTAT1 */
- return s->istat1;
+ ret = s->istat1;
+ break;
case 0x16: /* MBOX0 */
- return s->mbox0;
+ ret = s->mbox0;
+ break;
case 0x17: /* MBOX1 */
- return s->mbox1;
+ ret = s->mbox1;
+ break;
case 0x18: /* CTEST0 */
- return 0xff;
+ ret = 0xff;
+ break;
case 0x19: /* CTEST1 */
- return 0;
+ ret = 0;
+ break;
case 0x1a: /* CTEST2 */
- tmp = s->ctest2 | LSI_CTEST2_DACK | LSI_CTEST2_CM;
+ ret = s->ctest2 | LSI_CTEST2_DACK | LSI_CTEST2_CM;
if (s->istat0 & LSI_ISTAT0_SIGP) {
s->istat0 &= ~LSI_ISTAT0_SIGP;
- tmp |= LSI_CTEST2_SIGP;
+ ret |= LSI_CTEST2_SIGP;
}
- return tmp;
+ break;
case 0x1b: /* CTEST3 */
- return s->ctest3;
+ ret = s->ctest3;
+ break;
CASE_GET_REG32(temp, 0x1c)
case 0x20: /* DFIFO */
- return 0;
+ ret = 0;
+ break;
case 0x21: /* CTEST4 */
- return s->ctest4;
+ ret = s->ctest4;
+ break;
case 0x22: /* CTEST5 */
- return s->ctest5;
+ ret = s->ctest5;
+ break;
case 0x23: /* CTEST6 */
- return 0;
+ ret = 0;
+ break;
CASE_GET_REG24(dbc, 0x24)
case 0x27: /* DCMD */
- return s->dcmd;
+ ret = s->dcmd;
+ break;
CASE_GET_REG32(dnad, 0x28)
CASE_GET_REG32(dsp, 0x2c)
CASE_GET_REG32(dsps, 0x30)
CASE_GET_REG32(scratch[0], 0x34)
case 0x38: /* DMODE */
- return s->dmode;
+ ret = s->dmode;
+ break;
case 0x39: /* DIEN */
- return s->dien;
+ ret = s->dien;
+ break;
case 0x3a: /* SBR */
- return s->sbr;
+ ret = s->sbr;
+ break;
case 0x3b: /* DCNTL */
- return s->dcntl;
+ ret = s->dcntl;
+ break;
/* ADDER Output (Debug of relative jump address) */
CASE_GET_REG32(adder, 0x3c)
case 0x40: /* SIEN0 */
- return s->sien0;
+ ret = s->sien0;
+ break;
case 0x41: /* SIEN1 */
- return s->sien1;
+ ret = s->sien1;
+ break;
case 0x42: /* SIST0 */
- tmp = s->sist0;
+ ret = s->sist0;
s->sist0 = 0;
lsi_update_irq(s);
- return tmp;
+ break;
case 0x43: /* SIST1 */
- tmp = s->sist1;
+ ret = s->sist1;
s->sist1 = 0;
lsi_update_irq(s);
- return tmp;
+ break;
case 0x46: /* MACNTL */
- return 0x0f;
+ ret = 0x0f;
+ break;
case 0x47: /* GPCNTL0 */
- return 0x0f;
+ ret = 0x0f;
+ break;
case 0x48: /* STIME0 */
- return s->stime0;
+ ret = s->stime0;
+ break;
case 0x4a: /* RESPID0 */
- return s->respid0;
+ ret = s->respid0;
+ break;
case 0x4b: /* RESPID1 */
- return s->respid1;
+ ret = s->respid1;
+ break;
case 0x4d: /* STEST1 */
- return s->stest1;
+ ret = s->stest1;
+ break;
case 0x4e: /* STEST2 */
- return s->stest2;
+ ret = s->stest2;
+ break;
case 0x4f: /* STEST3 */
- return s->stest3;
+ ret = s->stest3;
+ break;
case 0x50: /* SIDL */
/* This is needed by the linux drivers. We currently only update it
during the MSG IN phase. */
- return s->sidl;
+ ret = s->sidl;
+ break;
case 0x52: /* STEST4 */
- return 0xe0;
+ ret = 0xe0;
+ break;
case 0x56: /* CCNTL0 */
- return s->ccntl0;
+ ret = s->ccntl0;
+ break;
case 0x57: /* CCNTL1 */
- return s->ccntl1;
+ ret = s->ccntl1;
+ break;
case 0x58: /* SBDL */
/* Some drivers peek at the data bus during the MSG IN phase. */
if ((s->sstat1 & PHASE_MASK) == PHASE_MI)
return s->msg[0];
- return 0;
+ ret = 0;
+ break;
case 0x59: /* SBDL high */
- return 0;
+ ret = 0;
+ break;
CASE_GET_REG32(mmrs, 0xa0)
CASE_GET_REG32(mmws, 0xa4)
CASE_GET_REG32(sfs, 0xa8)
@@ -1643,18 +1726,34 @@ static uint8_t lsi_reg_readb(LSIState *s, int offset)
CASE_GET_REG32(ia, 0xd4)
CASE_GET_REG32(sbc, 0xd8)
CASE_GET_REG32(csbc, 0xdc)
- }
- if (offset >= 0x5c && offset < 0xa0) {
+ case 0x5c ... 0x9f:
+ {
int n;
int shift;
n = (offset - 0x58) >> 2;
shift = (offset & 3) * 8;
- return (s->scratch[n] >> shift) & 0xff;
+ ret = (s->scratch[n] >> shift) & 0xff;
+ break;
+ }
+ default:
+ {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "lsi_scsi: invalid read from reg %s %x\n",
+ offset < ARRAY_SIZE(names) ? names[offset] : "???",
+ offset);
+ ret = 0xff;
+ break;
+ }
}
- BADF("readb 0x%x\n", offset);
- exit(1);
#undef CASE_GET_REG24
#undef CASE_GET_REG32
+
+#ifdef DEBUG_LSI_REG
+ DPRINTF("Read reg %s %x = %02x\n",
+ offset < ARRAY_SIZE(names) ? names[offset] : "???", offset, ret);
+#endif
+
+ return ret;
}
static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val)
@@ -1671,7 +1770,8 @@ static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val)
case addr + 3: s->name &= 0x00ffffff; s->name |= val << 24; break;
#ifdef DEBUG_LSI_REG
- DPRINTF("Write reg %x = %02x\n", offset, val);
+ DPRINTF("Write reg %s %x = %02x\n",
+ offset < ARRAY_SIZE(names) ? names[offset] : "???", offset, val);
#endif
switch (offset) {
case 0x00: /* SCNTL0 */
@@ -1799,9 +1899,6 @@ static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val)
CASE_SET_REG32(dsps, 0x30)
CASE_SET_REG32(scratch[0], 0x34)
case 0x38: /* DMODE */
- if (val & (LSI_DMODE_SIOM | LSI_DMODE_DIOM)) {
- BADF("IO mappings not implemented\n");
- }
s->dmode = val;
break;
case 0x39: /* DIEN */
@@ -1886,7 +1983,10 @@ static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val)
shift = (offset & 3) * 8;
s->scratch[n] = deposit32(s->scratch[n], shift, 8, val);
} else {
- BADF("Unhandled writeb 0x%x = 0x%x\n", offset, val);
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "lsi_scsi: invalid write to reg %s %x (0x%02x)\n",
+ offset < ARRAY_SIZE(names) ? names[offset] : "???",
+ offset, val);
}
}
#undef CASE_SET_REG24
@@ -2108,6 +2208,8 @@ static void lsi_scsi_realize(PCIDevice *dev, Error **errp)
memory_region_init_io(&s->io_io, OBJECT(s), &lsi_io_ops, s,
"lsi-io", 256);
+ address_space_init(&s->pci_io_as, pci_address_space_io(dev), "lsi-pci-io");
+
pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io_io);
pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->mmio_io);
pci_register_bar(dev, 2, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->ram_io);
@@ -2119,6 +2221,13 @@ static void lsi_scsi_realize(PCIDevice *dev, Error **errp)
}
}
+static void lsi_scsi_unrealize(DeviceState *dev, Error **errp)
+{
+ LSIState *s = LSI53C895A(dev);
+
+ address_space_destroy(&s->pci_io_as);
+}
+
static void lsi_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
@@ -2129,6 +2238,7 @@ static void lsi_class_init(ObjectClass *klass, void *data)
k->device_id = PCI_DEVICE_ID_LSI_53C895A;
k->class_id = PCI_CLASS_STORAGE_SCSI;
k->subsystem_id = 0x1000;
+ dc->unrealize = lsi_scsi_unrealize;
dc->reset = lsi_scsi_reset;
dc->vmsd = &vmstate_lsi_scsi;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-14 18:57:53 +0200