[Qemu-devel] [PATCH 16/17] ide: Convert SMART commands to ide_cmd_table handler

[Kevin Wolf <kwolf@redhat.com>]

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 hw/ide/core.c | 325 +++++++++++++++++++++++++++++++---------------------------
 1 file changed, 174 insertions(+), 151 deletions(-)

diff --git a/hw/ide/core.c b/hw/ide/core.c
index a563f6e..1c8f414 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1438,6 +1438,179 @@ static bool cmd_ibm_sense_condition(IDEState *s, uint8_t cmd)
     return true;
 }
 
+
+/*** SMART commands ***/
+
+static bool cmd_smart(IDEState *s, uint8_t cmd)
+{
+    int n;
+
+    if (s->hcyl != 0xc2 || s->lcyl != 0x4f) {
+        goto abort_cmd;
+    }
+
+    if (!s->smart_enabled && s->feature != SMART_ENABLE) {
+        goto abort_cmd;
+    }
+
+    switch (s->feature) {
+    case SMART_DISABLE:
+        s->smart_enabled = 0;
+        return true;
+
+    case SMART_ENABLE:
+        s->smart_enabled = 1;
+        return true;
+
+    case SMART_ATTR_AUTOSAVE:
+        switch (s->sector) {
+        case 0x00:
+            s->smart_autosave = 0;
+            break;
+        case 0xf1:
+            s->smart_autosave = 1;
+            break;
+        default:
+            goto abort_cmd;
+        }
+        return true;
+
+    case SMART_STATUS:
+        if (!s->smart_errors) {
+            s->hcyl = 0xc2;
+            s->lcyl = 0x4f;
+        } else {
+            s->hcyl = 0x2c;
+            s->lcyl = 0xf4;
+        }
+        return true;
+
+    case SMART_READ_THRESH:
+        memset(s->io_buffer, 0, 0x200);
+        s->io_buffer[0] = 0x01; /* smart struct version */
+
+        for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
+            s->io_buffer[2 + 0 + (n * 12)] = smart_attributes[n][0];
+            s->io_buffer[2 + 1 + (n * 12)] = smart_attributes[n][11];
+        }
+
+        /* checksum */
+        for (n = 0; n < 511; n++) {
+            s->io_buffer[511] += s->io_buffer[n];
+        }
+        s->io_buffer[511] = 0x100 - s->io_buffer[511];
+
+        s->status = READY_STAT | SEEK_STAT;
+        ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
+        ide_set_irq(s->bus);
+        return false;
+
+    case SMART_READ_DATA:
+        memset(s->io_buffer, 0, 0x200);
+        s->io_buffer[0] = 0x01; /* smart struct version */
+
+        for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
+            int i;
+            for (i = 0; i < 11; i++) {
+                s->io_buffer[2 + i + (n * 12)] = smart_attributes[n][i];
+            }
+        }
+
+        s->io_buffer[362] = 0x02 | (s->smart_autosave ? 0x80 : 0x00);
+        if (s->smart_selftest_count == 0) {
+            s->io_buffer[363] = 0;
+        } else {
+            s->io_buffer[363] =
+                s->smart_selftest_data[3 +
+                           (s->smart_selftest_count - 1) *
+                           24];
+        }
+        s->io_buffer[364] = 0x20;
+        s->io_buffer[365] = 0x01;
+        /* offline data collection capacity: execute + self-test*/
+        s->io_buffer[367] = (1 << 4 | 1 << 3 | 1);
+        s->io_buffer[368] = 0x03; /* smart capability (1) */
+        s->io_buffer[369] = 0x00; /* smart capability (2) */
+        s->io_buffer[370] = 0x01; /* error logging supported */
+        s->io_buffer[372] = 0x02; /* minutes for poll short test */
+        s->io_buffer[373] = 0x36; /* minutes for poll ext test */
+        s->io_buffer[374] = 0x01; /* minutes for poll conveyance */
+
+        for (n = 0; n < 511; n++) {
+            s->io_buffer[511] += s->io_buffer[n];
+        }
+        s->io_buffer[511] = 0x100 - s->io_buffer[511];
+
+        s->status = READY_STAT | SEEK_STAT;
+        ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
+        ide_set_irq(s->bus);
+        return false;
+
+    case SMART_READ_LOG:
+        switch (s->sector) {
+        case 0x01: /* summary smart error log */
+            memset(s->io_buffer, 0, 0x200);
+            s->io_buffer[0] = 0x01;
+            s->io_buffer[1] = 0x00; /* no error entries */
+            s->io_buffer[452] = s->smart_errors & 0xff;
+            s->io_buffer[453] = (s->smart_errors & 0xff00) >> 8;
+
+            for (n = 0; n < 511; n++) {
+                s->io_buffer[511] += s->io_buffer[n];
+            }
+            s->io_buffer[511] = 0x100 - s->io_buffer[511];
+            break;
+        case 0x06: /* smart self test log */
+            memset(s->io_buffer, 0, 0x200);
+            s->io_buffer[0] = 0x01;
+            if (s->smart_selftest_count == 0) {
+                s->io_buffer[508] = 0;
+            } else {
+                s->io_buffer[508] = s->smart_selftest_count;
+                for (n = 2; n < 506; n++)  {
+                    s->io_buffer[n] = s->smart_selftest_data[n];
+                }
+            }
+
+            for (n = 0; n < 511; n++) {
+                s->io_buffer[511] += s->io_buffer[n];
+            }
+            s->io_buffer[511] = 0x100 - s->io_buffer[511];
+            break;
+        default:
+            goto abort_cmd;
+        }
+        s->status = READY_STAT | SEEK_STAT;
+        ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
+        ide_set_irq(s->bus);
+        return false;
+
+    case SMART_EXECUTE_OFFLINE:
+        switch (s->sector) {
+        case 0: /* off-line routine */
+        case 1: /* short self test */
+        case 2: /* extended self test */
+            s->smart_selftest_count++;
+            if (s->smart_selftest_count > 21) {
+                s->smart_selftest_count = 0;
+            }
+            n = 2 + (s->smart_selftest_count - 1) * 24;
+            s->smart_selftest_data[n] = s->sector;
+            s->smart_selftest_data[n + 1] = 0x00; /* OK and finished */
+            s->smart_selftest_data[n + 2] = 0x34; /* hour count lsb */
+            s->smart_selftest_data[n + 3] = 0x12; /* hour count msb */
+            break;
+        default:
+            goto abort_cmd;
+        }
+        return true;
+    }
+
+abort_cmd:
+    ide_abort_command(s);
+    return true;
+}
+
 #define HD_OK (1u << IDE_HD)
 #define CD_OK (1u << IDE_CD)
 #define CFA_OK (1u << IDE_CFATA)
@@ -1486,7 +1659,7 @@ static const struct {
     [WIN_SLEEPNOW2]               = { cmd_nop, ALL_OK },
     [WIN_PACKETCMD]               = { cmd_packet, CD_OK },
     [WIN_PIDENTIFY]               = { cmd_identify_packet, CD_OK },
-    [WIN_SMART]                   = { NULL, HD_CFA_OK },
+    [WIN_SMART]                   = { cmd_smart, HD_CFA_OK | SET_DSC },
     [CFA_ACCESS_METADATA_STORAGE] = { cmd_cfa_access_metadata_storage, CFA_OK },
     [CFA_ERASE_SECTORS]           = { cmd_cfa_erase_sectors, CFA_OK | SET_DSC },
     [WIN_MULTREAD]                = { cmd_read_multiple, HD_CFA_OK },
@@ -1521,7 +1694,6 @@ static bool ide_cmd_permitted(IDEState *s, uint32_t cmd)
 void ide_exec_cmd(IDEBus *bus, uint32_t val)
 {
     IDEState *s;
-    int n;
 
 #if defined(DEBUG_IDE)
     printf("ide: CMD=%02x\n", val);
@@ -1561,155 +1733,6 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
     }
 
     switch(val) {
-    case WIN_SMART:
-	if (s->hcyl != 0xc2 || s->lcyl != 0x4f)
-		goto abort_cmd;
-	if (!s->smart_enabled && s->feature != SMART_ENABLE)
-		goto abort_cmd;
-	switch (s->feature) {
-	case SMART_DISABLE:
-		s->smart_enabled = 0;
-		s->status = READY_STAT | SEEK_STAT;
-		ide_set_irq(s->bus);
-		break;
-	case SMART_ENABLE:
-		s->smart_enabled = 1;
-		s->status = READY_STAT | SEEK_STAT;
-		ide_set_irq(s->bus);
-		break;
-	case SMART_ATTR_AUTOSAVE:
-		switch (s->sector) {
-		case 0x00:
-		s->smart_autosave = 0;
-		break;
-		case 0xf1:
-		s->smart_autosave = 1;
-		break;
-		default:
-		goto abort_cmd;
-		}
-		s->status = READY_STAT | SEEK_STAT;
-		ide_set_irq(s->bus);
-		break;
-	case SMART_STATUS:
-		if (!s->smart_errors) {
-		s->hcyl = 0xc2;
-		s->lcyl = 0x4f;
-		} else {
-		s->hcyl = 0x2c;
-		s->lcyl = 0xf4;
-		}
-		s->status = READY_STAT | SEEK_STAT;
-		ide_set_irq(s->bus);
-		break;
-	case SMART_READ_THRESH:
-		memset(s->io_buffer, 0, 0x200);
-		s->io_buffer[0] = 0x01; /* smart struct version */
-		for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
-		s->io_buffer[2+0+(n*12)] = smart_attributes[n][0];
-		s->io_buffer[2+1+(n*12)] = smart_attributes[n][11];
-		}
-		for (n=0; n<511; n++) /* checksum */
-		s->io_buffer[511] += s->io_buffer[n];
-		s->io_buffer[511] = 0x100 - s->io_buffer[511];
-		s->status = READY_STAT | SEEK_STAT;
-		ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
-		ide_set_irq(s->bus);
-		break;
-	case SMART_READ_DATA:
-		memset(s->io_buffer, 0, 0x200);
-		s->io_buffer[0] = 0x01; /* smart struct version */
-		for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
-		    int i;
-		    for(i = 0; i < 11; i++) {
-			s->io_buffer[2+i+(n*12)] = smart_attributes[n][i];
-		    }
-		}
-		s->io_buffer[362] = 0x02 | (s->smart_autosave?0x80:0x00);
-		if (s->smart_selftest_count == 0) {
-		s->io_buffer[363] = 0;
-		} else {
-		s->io_buffer[363] =
-			s->smart_selftest_data[3 + 
-					   (s->smart_selftest_count - 1) *
-					   24];
-		}
-		s->io_buffer[364] = 0x20; 
-		s->io_buffer[365] = 0x01; 
-		/* offline data collection capacity: execute + self-test*/
-		s->io_buffer[367] = (1<<4 | 1<<3 | 1); 
-		s->io_buffer[368] = 0x03; /* smart capability (1) */
-		s->io_buffer[369] = 0x00; /* smart capability (2) */
-		s->io_buffer[370] = 0x01; /* error logging supported */
-		s->io_buffer[372] = 0x02; /* minutes for poll short test */
-		s->io_buffer[373] = 0x36; /* minutes for poll ext test */
-		s->io_buffer[374] = 0x01; /* minutes for poll conveyance */
-
-		for (n=0; n<511; n++) 
-		s->io_buffer[511] += s->io_buffer[n];
-		s->io_buffer[511] = 0x100 - s->io_buffer[511];
-		s->status = READY_STAT | SEEK_STAT;
-		ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
-		ide_set_irq(s->bus);
-		break;
-	case SMART_READ_LOG:
-		switch (s->sector) {
-		case 0x01: /* summary smart error log */
-		memset(s->io_buffer, 0, 0x200);
-		s->io_buffer[0] = 0x01;
-		s->io_buffer[1] = 0x00; /* no error entries */
-		s->io_buffer[452] = s->smart_errors & 0xff;
-		s->io_buffer[453] = (s->smart_errors & 0xff00) >> 8;
-
-		for (n=0; n<511; n++)
-			s->io_buffer[511] += s->io_buffer[n];
-		s->io_buffer[511] = 0x100 - s->io_buffer[511];
-		break;
-		case 0x06: /* smart self test log */
-		memset(s->io_buffer, 0, 0x200);
-		s->io_buffer[0] = 0x01;
-		if (s->smart_selftest_count == 0) {
-			s->io_buffer[508] = 0;
-		} else {
-			s->io_buffer[508] = s->smart_selftest_count;
-			for (n=2; n<506; n++) 
-			s->io_buffer[n] = s->smart_selftest_data[n];
-		}
-		for (n=0; n<511; n++)
-			s->io_buffer[511] += s->io_buffer[n];
-		s->io_buffer[511] = 0x100 - s->io_buffer[511];
-		break;
-		default:
-		goto abort_cmd;
-		}
-		s->status = READY_STAT | SEEK_STAT;
-		ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
-		ide_set_irq(s->bus);
-		break;
-	case SMART_EXECUTE_OFFLINE:
-		switch (s->sector) {
-		case 0: /* off-line routine */
-		case 1: /* short self test */
-		case 2: /* extended self test */
-		s->smart_selftest_count++;
-		if(s->smart_selftest_count > 21)
-			s->smart_selftest_count = 0;
-		n = 2 + (s->smart_selftest_count - 1) * 24;
-		s->smart_selftest_data[n] = s->sector;
-		s->smart_selftest_data[n+1] = 0x00; /* OK and finished */
-		s->smart_selftest_data[n+2] = 0x34; /* hour count lsb */
-		s->smart_selftest_data[n+3] = 0x12; /* hour count msb */
-		s->status = READY_STAT | SEEK_STAT;
-		ide_set_irq(s->bus);
-		break;
-		default:
-		goto abort_cmd;
-		}
-		break;
-	default:
-		goto abort_cmd;
-	}
-	break;
     default:
         /* should not be reachable */
     abort_cmd:
-- 
1.8.1.4