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Diffstat (limited to 'hw/ide')
-rw-r--r--hw/ide/core.c105
1 files changed, 80 insertions, 25 deletions
diff --git a/hw/ide/core.c b/hw/ide/core.c
index def01266d0..4a45b3ea90 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -901,6 +901,78 @@ void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
}
}
+#define HD_OK (1u << IDE_HD)
+#define CD_OK (1u << IDE_CD)
+#define CFA_OK (1u << IDE_CFATA)
+#define HD_CFA_OK (HD_OK | CFA_OK)
+#define ALL_OK (HD_OK | CD_OK | CFA_OK)
+
+/* See ACS-2 T13/2015-D Table B.2 Command codes */
+static const uint8_t ide_cmd_table[0x100] = {
+ /* NOP not implemented, mandatory for CD */
+ [CFA_REQ_EXT_ERROR_CODE] = CFA_OK,
+ [WIN_DSM] = ALL_OK,
+ [WIN_DEVICE_RESET] = CD_OK,
+ [WIN_RECAL] = ALL_OK,
+ [WIN_READ] = ALL_OK,
+ [WIN_READ_ONCE] = ALL_OK,
+ [WIN_READ_EXT] = ALL_OK,
+ [WIN_READDMA_EXT] = ALL_OK,
+ [WIN_READ_NATIVE_MAX_EXT] = ALL_OK,
+ [WIN_MULTREAD_EXT] = ALL_OK,
+ [WIN_WRITE] = ALL_OK,
+ [WIN_WRITE_ONCE] = ALL_OK,
+ [WIN_WRITE_EXT] = ALL_OK,
+ [WIN_WRITEDMA_EXT] = ALL_OK,
+ [CFA_WRITE_SECT_WO_ERASE] = ALL_OK,
+ [WIN_MULTWRITE_EXT] = ALL_OK,
+ [WIN_WRITE_VERIFY] = ALL_OK,
+ [WIN_VERIFY] = ALL_OK,
+ [WIN_VERIFY_ONCE] = ALL_OK,
+ [WIN_VERIFY_EXT] = ALL_OK,
+ [WIN_SEEK] = HD_CFA_OK,
+ [CFA_TRANSLATE_SECTOR] = CFA_OK,
+ [WIN_DIAGNOSE] = ALL_OK,
+ [WIN_SPECIFY] = ALL_OK,
+ [WIN_STANDBYNOW2] = ALL_OK,
+ [WIN_IDLEIMMEDIATE2] = ALL_OK,
+ [WIN_STANDBY2] = ALL_OK,
+ [WIN_SETIDLE2] = ALL_OK,
+ [WIN_CHECKPOWERMODE2] = ALL_OK,
+ [WIN_SLEEPNOW2] = ALL_OK,
+ [WIN_PACKETCMD] = CD_OK,
+ [WIN_PIDENTIFY] = CD_OK,
+ [WIN_SMART] = HD_CFA_OK,
+ [CFA_ACCESS_METADATA_STORAGE] = CFA_OK,
+ [CFA_ERASE_SECTORS] = CFA_OK,
+ [WIN_MULTREAD] = ALL_OK,
+ [WIN_MULTWRITE] = ALL_OK,
+ [WIN_SETMULT] = ALL_OK,
+ [WIN_READDMA] = ALL_OK,
+ [WIN_READDMA_ONCE] = ALL_OK,
+ [WIN_WRITEDMA] = ALL_OK,
+ [WIN_WRITEDMA_ONCE] = ALL_OK,
+ [CFA_WRITE_MULTI_WO_ERASE] = ALL_OK,
+ [WIN_STANDBYNOW1] = ALL_OK,
+ [WIN_IDLEIMMEDIATE] = ALL_OK,
+ [WIN_STANDBY] = ALL_OK,
+ [WIN_SETIDLE1] = ALL_OK,
+ [WIN_CHECKPOWERMODE1] = ALL_OK,
+ [WIN_SLEEPNOW1] = ALL_OK,
+ [WIN_FLUSH_CACHE] = ALL_OK,
+ [WIN_FLUSH_CACHE_EXT] = ALL_OK,
+ [WIN_IDENTIFY] = ALL_OK,
+ [WIN_SETFEATURES] = ALL_OK,
+ [IBM_SENSE_CONDITION] = CFA_OK,
+ [CFA_WEAR_LEVEL] = CFA_OK,
+ [WIN_READ_NATIVE_MAX] = ALL_OK,
+};
+
+static bool ide_cmd_permitted(IDEState *s, uint32_t cmd)
+{
+ return cmd < ARRAY_SIZE(ide_cmd_table)
+ && (ide_cmd_table[cmd] & (1u << s->drive_kind));
+}
void ide_exec_cmd(IDEBus *bus, uint32_t val)
{
@@ -920,6 +992,10 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
if ((s->status & (BUSY_STAT|DRQ_STAT)) && val != WIN_DEVICE_RESET)
return;
+ if (!ide_cmd_permitted(s, val)) {
+ goto abort_cmd;
+ }
+
switch(val) {
case WIN_DSM:
switch (s->feature) {
@@ -1140,21 +1216,15 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
ide_set_irq(s->bus);
break;
case WIN_SEEK:
- if(s->drive_kind == IDE_CD)
- goto abort_cmd;
/* XXX: Check that seek is within bounds */
s->status = READY_STAT | SEEK_STAT;
ide_set_irq(s->bus);
break;
/* ATAPI commands */
case WIN_PIDENTIFY:
- if (s->drive_kind == IDE_CD) {
- ide_atapi_identify(s);
- s->status = READY_STAT | SEEK_STAT;
- ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
- } else {
- ide_abort_command(s);
- }
+ ide_atapi_identify(s);
+ s->status = READY_STAT | SEEK_STAT;
+ ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
ide_set_irq(s->bus);
break;
case WIN_DIAGNOSE:
@@ -1171,15 +1241,11 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
ide_set_irq(s->bus);
break;
case WIN_DEVICE_RESET:
- if (s->drive_kind != IDE_CD)
- goto abort_cmd;
ide_set_signature(s);
s->status = 0x00; /* NOTE: READY is _not_ set */
s->error = 0x01;
break;
case WIN_PACKETCMD:
- if (s->drive_kind != IDE_CD)
- goto abort_cmd;
/* overlapping commands not supported */
if (s->feature & 0x02)
goto abort_cmd;
@@ -1191,16 +1257,12 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
break;
/* CF-ATA commands */
case CFA_REQ_EXT_ERROR_CODE:
- if (s->drive_kind != IDE_CFATA)
- goto abort_cmd;
s->error = 0x09; /* miscellaneous error */
s->status = READY_STAT | SEEK_STAT;
ide_set_irq(s->bus);
break;
case CFA_ERASE_SECTORS:
case CFA_WEAR_LEVEL:
- if (s->drive_kind != IDE_CFATA)
- goto abort_cmd;
if (val == CFA_WEAR_LEVEL)
s->nsector = 0;
if (val == CFA_ERASE_SECTORS)
@@ -1210,8 +1272,6 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
ide_set_irq(s->bus);
break;
case CFA_TRANSLATE_SECTOR:
- if (s->drive_kind != IDE_CFATA)
- goto abort_cmd;
s->error = 0x00;
s->status = READY_STAT | SEEK_STAT;
memset(s->io_buffer, 0, 0x200);
@@ -1230,8 +1290,6 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
ide_set_irq(s->bus);
break;
case CFA_ACCESS_METADATA_STORAGE:
- if (s->drive_kind != IDE_CFATA)
- goto abort_cmd;
switch (s->feature) {
case 0x02: /* Inquiry Metadata Storage */
ide_cfata_metadata_inquiry(s);
@@ -1250,8 +1308,6 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
ide_set_irq(s->bus);
break;
case IBM_SENSE_CONDITION:
- if (s->drive_kind != IDE_CFATA)
- goto abort_cmd;
switch (s->feature) {
case 0x01: /* sense temperature in device */
s->nsector = 0x50; /* +20 C */
@@ -1264,8 +1320,6 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
break;
case WIN_SMART:
- if (s->drive_kind == IDE_CD)
- goto abort_cmd;
if (s->hcyl != 0xc2 || s->lcyl != 0x4f)
goto abort_cmd;
if (!s->smart_enabled && s->feature != SMART_ENABLE)
@@ -1420,6 +1474,7 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
}
break;
default:
+ /* should not be reachable */
abort_cmd:
ide_abort_command(s);
ide_set_irq(s->bus);
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-19 08:02:15 +0000