X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/380feaffb0fcc8e5f615ed8e86d2e93717a6f2c6..22d48de65c88c42e3cb2b000491dc6089a240e2a:/hw/scsi-disk.c

diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index ad6c00ddcf..a9c727905a 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -447,7 +447,7 @@ static void scsi_write_complete(void * opaque, int ret)
         return;
     } else {
         scsi_init_iovec(r, SCSI_DMA_BUF_SIZE);
-        DPRINTF("Write complete tag=0x%x more=%d\n", r->req.tag, r->qiov.size);
+        DPRINTF("Write complete tag=0x%x more=%zd\n", r->req.tag, r->qiov.size);
         scsi_req_data(&r->req, r->qiov.size);
     }
 
@@ -1050,10 +1050,8 @@ static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf,
 
     case MODE_PAGE_CACHING:
         length = 0x12;
-        if (page_control == 1) { /* Changeable Values */
-            break;
-        }
-        if (bdrv_enable_write_cache(s->qdev.conf.bs)) {
+        if (page_control == 1 || /* Changeable Values */
+            bdrv_enable_write_cache(s->qdev.conf.bs)) {
             p[0] = 4; /* WCE */
         }
         break;
@@ -1249,8 +1247,14 @@ static int scsi_disk_emulate_start_stop(SCSIDiskReq *r)
     SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
     bool start = req->cmd.buf[4] & 1;
     bool loej = req->cmd.buf[4] & 2; /* load on start, eject on !start */
+    int pwrcnd = req->cmd.buf[4] & 0xf0;
+
+    if (pwrcnd) {
+        /* eject/load only happens for power condition == 0 */
+        return 0;
+    }
 
-    if (s->qdev.type == TYPE_ROM && loej) {
+    if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) && loej) {
         if (!start && !s->tray_open && s->tray_locked) {
             scsi_check_condition(r,
                                  bdrv_is_inserted(s->qdev.conf.bs)
@@ -1273,7 +1277,7 @@ static void scsi_disk_emulate_read_data(SCSIRequest *req)
     int buflen = r->iov.iov_len;
 
     if (buflen) {
-        DPRINTF("Read buf_len=%zd\n", buflen);
+        DPRINTF("Read buf_len=%d\n", buflen);
         r->iov.iov_len = 0;
         r->started = true;
         scsi_req_data(&r->req, buflen);
@@ -1325,6 +1329,14 @@ static int scsi_disk_check_mode_select(SCSIDiskState *s, int page,
 
 static void scsi_disk_apply_mode_select(SCSIDiskState *s, int page, uint8_t *p)
 {
+    switch (page) {
+    case MODE_PAGE_CACHING:
+        bdrv_set_enable_write_cache(s->qdev.conf.bs, (p[0] & 4) != 0);
+        break;
+
+    default:
+        break;
+    }
 }
 
 static int mode_select_pages(SCSIDiskReq *r, uint8_t *p, int len, bool change)
@@ -1443,7 +1455,7 @@ static void scsi_disk_emulate_write_data(SCSIRequest *req)
 
     if (r->iov.iov_len) {
         int buflen = r->iov.iov_len;
-        DPRINTF("Write buf_len=%zd\n", buflen);
+        DPRINTF("Write buf_len=%d\n", buflen);
         r->iov.iov_len = 0;
         scsi_req_data(&r->req, buflen);
         return;
@@ -1696,6 +1708,10 @@ static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf)
     case WRITE_SAME_16:
         nb_sectors = ldl_be_p(&req->cmd.buf[10]) & 0xffffffffULL;
     write_same:
+        if (bdrv_is_read_only(s->qdev.conf.bs)) {
+            scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
+            return 0;
+        }
         if (r->req.cmd.lba > s->qdev.max_lba) {
             goto illegal_lba;
         }
@@ -1768,15 +1784,16 @@ static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf)
     case READ_16:
         len = r->req.cmd.xfer / s->qdev.blocksize;
         DPRINTF("Read (sector %" PRId64 ", count %d)\n", r->req.cmd.lba, len);
-        if (r->req.cmd.lba > s->qdev.max_lba) {
+        if (r->req.cmd.buf[1] & 0xe0) {
+            goto illegal_request;
+        }
+        if (r->req.cmd.lba > r->req.cmd.lba + len ||
+            r->req.cmd.lba + len - 1 > s->qdev.max_lba) {
             goto illegal_lba;
         }
         r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
         r->sector_count = len * (s->qdev.blocksize / 512);
         break;
-    case VERIFY_10:
-    case VERIFY_12:
-    case VERIFY_16:
     case WRITE_6:
     case WRITE_10:
     case WRITE_12:
@@ -1784,11 +1801,23 @@ static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf)
     case WRITE_VERIFY_10:
     case WRITE_VERIFY_12:
     case WRITE_VERIFY_16:
+        if (bdrv_is_read_only(s->qdev.conf.bs)) {
+            scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
+            return 0;
+        }
+        /* fallthrough */
+    case VERIFY_10:
+    case VERIFY_12:
+    case VERIFY_16:
         len = r->req.cmd.xfer / s->qdev.blocksize;
         DPRINTF("Write %s(sector %" PRId64 ", count %d)\n",
                 (command & 0xe) == 0xe ? "And Verify " : "",
                 r->req.cmd.lba, len);
-        if (r->req.cmd.lba > s->qdev.max_lba) {
+        if (r->req.cmd.buf[1] & 0xe0) {
+            goto illegal_request;
+        }
+        if (r->req.cmd.lba > r->req.cmd.lba + len ||
+            r->req.cmd.lba + len - 1 > s->qdev.max_lba) {
             goto illegal_lba;
         }
         r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
@@ -1796,6 +1825,9 @@ static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf)
         break;
     default:
         abort();
+    illegal_request:
+        scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
+        return 0;
     illegal_lba:
         scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
         return 0;
@@ -1834,6 +1866,19 @@ static void scsi_destroy(SCSIDevice *dev)
     blockdev_mark_auto_del(s->qdev.conf.bs);
 }
 
+static void scsi_disk_resize_cb(void *opaque)
+{
+    SCSIDiskState *s = opaque;
+
+    /* SPC lists this sense code as available only for
+     * direct-access devices.
+     */
+    if (s->qdev.type == TYPE_DISK) {
+        scsi_device_set_ua(&s->qdev, SENSE_CODE(CAPACITY_CHANGED));
+        scsi_device_report_change(&s->qdev, SENSE_CODE(CAPACITY_CHANGED));
+    }
+}
+
 static void scsi_cd_change_media_cb(void *opaque, bool load)
 {
     SCSIDiskState *s = opaque;
@@ -1850,7 +1895,7 @@ static void scsi_cd_change_media_cb(void *opaque, bool load)
      */
     s->media_changed = load;
     s->tray_open = !load;
-    s->qdev.unit_attention = SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM);
+    scsi_device_set_ua(&s->qdev, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM));
     s->media_event = true;
     s->eject_request = false;
 }
@@ -1875,11 +1920,17 @@ static bool scsi_cd_is_medium_locked(void *opaque)
     return ((SCSIDiskState *)opaque)->tray_locked;
 }
 
-static const BlockDevOps scsi_cd_block_ops = {
+static const BlockDevOps scsi_disk_removable_block_ops = {
     .change_media_cb = scsi_cd_change_media_cb,
     .eject_request_cb = scsi_cd_eject_request_cb,
     .is_tray_open = scsi_cd_is_tray_open,
     .is_medium_locked = scsi_cd_is_medium_locked,
+
+    .resize_cb = scsi_disk_resize_cb,
+};
+
+static const BlockDevOps scsi_disk_block_ops = {
+    .resize_cb = scsi_disk_resize_cb,
 };
 
 static void scsi_disk_unit_attention_reported(SCSIDevice *dev)
@@ -1887,7 +1938,7 @@ static void scsi_disk_unit_attention_reported(SCSIDevice *dev)
     SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
     if (s->media_changed) {
         s->media_changed = false;
-        s->qdev.unit_attention = SENSE_CODE(MEDIUM_CHANGED);
+        scsi_device_set_ua(&s->qdev, SENSE_CODE(MEDIUM_CHANGED));
     }
 }
 
@@ -1924,7 +1975,9 @@ static int scsi_initfn(SCSIDevice *dev)
     }
 
     if (s->features & (1 << SCSI_DISK_F_REMOVABLE)) {
-        bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_cd_block_ops, s);
+        bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_disk_removable_block_ops, s);
+    } else {
+        bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_disk_block_ops, s);
     }
     bdrv_set_buffer_alignment(s->qdev.conf.bs, s->qdev.blocksize);
 
@@ -2040,23 +2093,24 @@ static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
     const SCSIReqOps *ops;
     uint8_t command;
 
+    command = buf[0];
+    ops = scsi_disk_reqops_dispatch[command];
+    if (!ops) {
+        ops = &scsi_disk_emulate_reqops;
+    }
+    req = scsi_req_alloc(ops, &s->qdev, tag, lun, hba_private);
+
 #ifdef DEBUG_SCSI
-    DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", lun, buf[0]);
+    DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", lun, tag, buf[0]);
     {
         int i;
-        for (i = 1; i < r->req.cmd.len; i++) {
+        for (i = 1; i < req->cmd.len; i++) {
             printf(" 0x%02x", buf[i]);
         }
         printf("\n");
     }
 #endif
 
-    command = buf[0];
-    ops = scsi_disk_reqops_dispatch[command];
-    if (!ops) {
-        ops = &scsi_disk_emulate_reqops;
-    }
-    req = scsi_req_alloc(ops, &s->qdev, tag, lun, hba_private);
     return req;
 }