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-rw-r--r--hw/scsi-disk.c2526
1 files changed, 0 insertions, 2526 deletions
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
deleted file mode 100644
index c5c7bf3..0000000
--- a/hw/scsi-disk.c
+++ /dev/null
@@ -1,2526 +0,0 @@
-/*
- * SCSI Device emulation
- *
- * Copyright (c) 2006 CodeSourcery.
- * Based on code by Fabrice Bellard
- *
- * Written by Paul Brook
- * Modifications:
- * 2009-Dec-12 Artyom Tarasenko : implemented stamdard inquiry for the case
- * when the allocation length of CDB is smaller
- * than 36.
- * 2009-Oct-13 Artyom Tarasenko : implemented the block descriptor in the
- * MODE SENSE response.
- *
- * This code is licensed under the LGPL.
- *
- * Note that this file only handles the SCSI architecture model and device
- * commands. Emulation of interface/link layer protocols is handled by
- * the host adapter emulator.
- */
-
-//#define DEBUG_SCSI
-
-#ifdef DEBUG_SCSI
-#define DPRINTF(fmt, ...) \
-do { printf("scsi-disk: " fmt , ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) do {} while(0)
-#endif
-
-#include "qemu-common.h"
-#include "qemu/error-report.h"
-#include "hw/scsi.h"
-#include "hw/scsi-defs.h"
-#include "sysemu/sysemu.h"
-#include "sysemu/blockdev.h"
-#include "hw/block-common.h"
-#include "sysemu/dma.h"
-
-#ifdef __linux
-#include <scsi/sg.h>
-#endif
-
-#define SCSI_DMA_BUF_SIZE 131072
-#define SCSI_MAX_INQUIRY_LEN 256
-#define SCSI_MAX_MODE_LEN 256
-
-#define DEFAULT_DISCARD_GRANULARITY 4096
-
-typedef struct SCSIDiskState SCSIDiskState;
-
-typedef struct SCSIDiskReq {
- SCSIRequest req;
- /* Both sector and sector_count are in terms of qemu 512 byte blocks. */
- uint64_t sector;
- uint32_t sector_count;
- uint32_t buflen;
- bool started;
- struct iovec iov;
- QEMUIOVector qiov;
- BlockAcctCookie acct;
-} SCSIDiskReq;
-
-#define SCSI_DISK_F_REMOVABLE 0
-#define SCSI_DISK_F_DPOFUA 1
-
-struct SCSIDiskState
-{
- SCSIDevice qdev;
- uint32_t features;
- bool media_changed;
- bool media_event;
- bool eject_request;
- uint64_t wwn;
- QEMUBH *bh;
- char *version;
- char *serial;
- char *vendor;
- char *product;
- bool tray_open;
- bool tray_locked;
-};
-
-static int scsi_handle_rw_error(SCSIDiskReq *r, int error);
-
-static void scsi_free_request(SCSIRequest *req)
-{
- SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
- qemu_vfree(r->iov.iov_base);
-}
-
-/* Helper function for command completion with sense. */
-static void scsi_check_condition(SCSIDiskReq *r, SCSISense sense)
-{
- DPRINTF("Command complete tag=0x%x sense=%d/%d/%d\n",
- r->req.tag, sense.key, sense.asc, sense.ascq);
- scsi_req_build_sense(&r->req, sense);
- scsi_req_complete(&r->req, CHECK_CONDITION);
-}
-
-/* Cancel a pending data transfer. */
-static void scsi_cancel_io(SCSIRequest *req)
-{
- SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
- DPRINTF("Cancel tag=0x%x\n", req->tag);
- if (r->req.aiocb) {
- bdrv_aio_cancel(r->req.aiocb);
-
- /* This reference was left in by scsi_*_data. We take ownership of
- * it the moment scsi_req_cancel is called, independent of whether
- * bdrv_aio_cancel completes the request or not. */
- scsi_req_unref(&r->req);
- }
- r->req.aiocb = NULL;
-}
-
-static uint32_t scsi_init_iovec(SCSIDiskReq *r, size_t size)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-
- if (!r->iov.iov_base) {
- r->buflen = size;
- r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen);
- }
- r->iov.iov_len = MIN(r->sector_count * 512, r->buflen);
- qemu_iovec_init_external(&r->qiov, &r->iov, 1);
- return r->qiov.size / 512;
-}
-
-static void scsi_disk_save_request(QEMUFile *f, SCSIRequest *req)
-{
- SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
- qemu_put_be64s(f, &r->sector);
- qemu_put_be32s(f, &r->sector_count);
- qemu_put_be32s(f, &r->buflen);
- if (r->buflen) {
- if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
- qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len);
- } else if (!req->retry) {
- uint32_t len = r->iov.iov_len;
- qemu_put_be32s(f, &len);
- qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len);
- }
- }
-}
-
-static void scsi_disk_load_request(QEMUFile *f, SCSIRequest *req)
-{
- SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
- qemu_get_be64s(f, &r->sector);
- qemu_get_be32s(f, &r->sector_count);
- qemu_get_be32s(f, &r->buflen);
- if (r->buflen) {
- scsi_init_iovec(r, r->buflen);
- if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
- qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len);
- } else if (!r->req.retry) {
- uint32_t len;
- qemu_get_be32s(f, &len);
- r->iov.iov_len = len;
- assert(r->iov.iov_len <= r->buflen);
- qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len);
- }
- }
-
- qemu_iovec_init_external(&r->qiov, &r->iov, 1);
-}
-
-static void scsi_aio_complete(void *opaque, int ret)
-{
- SCSIDiskReq *r = (SCSIDiskReq *)opaque;
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-
- assert(r->req.aiocb != NULL);
- r->req.aiocb = NULL;
- bdrv_acct_done(s->qdev.conf.bs, &r->acct);
- if (r->req.io_canceled) {
- goto done;
- }
-
- if (ret < 0) {
- if (scsi_handle_rw_error(r, -ret)) {
- goto done;
- }
- }
-
- scsi_req_complete(&r->req, GOOD);
-
-done:
- if (!r->req.io_canceled) {
- scsi_req_unref(&r->req);
- }
-}
-
-static bool scsi_is_cmd_fua(SCSICommand *cmd)
-{
- switch (cmd->buf[0]) {
- case READ_10:
- case READ_12:
- case READ_16:
- case WRITE_10:
- case WRITE_12:
- case WRITE_16:
- return (cmd->buf[1] & 8) != 0;
-
- case VERIFY_10:
- case VERIFY_12:
- case VERIFY_16:
- case WRITE_VERIFY_10:
- case WRITE_VERIFY_12:
- case WRITE_VERIFY_16:
- return true;
-
- case READ_6:
- case WRITE_6:
- default:
- return false;
- }
-}
-
-static void scsi_write_do_fua(SCSIDiskReq *r)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-
- if (r->req.io_canceled) {
- goto done;
- }
-
- if (scsi_is_cmd_fua(&r->req.cmd)) {
- bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
- r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r);
- return;
- }
-
- scsi_req_complete(&r->req, GOOD);
-
-done:
- if (!r->req.io_canceled) {
- scsi_req_unref(&r->req);
- }
-}
-
-static void scsi_dma_complete(void *opaque, int ret)
-{
- SCSIDiskReq *r = (SCSIDiskReq *)opaque;
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-
- assert(r->req.aiocb != NULL);
- r->req.aiocb = NULL;
- bdrv_acct_done(s->qdev.conf.bs, &r->acct);
- if (r->req.io_canceled) {
- goto done;
- }
-
- if (ret < 0) {
- if (scsi_handle_rw_error(r, -ret)) {
- goto done;
- }
- }
-
- r->sector += r->sector_count;
- r->sector_count = 0;
- if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
- scsi_write_do_fua(r);
- return;
- } else {
- scsi_req_complete(&r->req, GOOD);
- }
-
-done:
- if (!r->req.io_canceled) {
- scsi_req_unref(&r->req);
- }
-}
-
-static void scsi_read_complete(void * opaque, int ret)
-{
- SCSIDiskReq *r = (SCSIDiskReq *)opaque;
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- int n;
-
- assert(r->req.aiocb != NULL);
- r->req.aiocb = NULL;
- bdrv_acct_done(s->qdev.conf.bs, &r->acct);
- if (r->req.io_canceled) {
- goto done;
- }
-
- if (ret < 0) {
- if (scsi_handle_rw_error(r, -ret)) {
- goto done;
- }
- }
-
- DPRINTF("Data ready tag=0x%x len=%zd\n", r->req.tag, r->qiov.size);
-
- n = r->qiov.size / 512;
- r->sector += n;
- r->sector_count -= n;
- scsi_req_data(&r->req, r->qiov.size);
-
-done:
- if (!r->req.io_canceled) {
- scsi_req_unref(&r->req);
- }
-}
-
-/* Actually issue a read to the block device. */
-static void scsi_do_read(void *opaque, int ret)
-{
- SCSIDiskReq *r = opaque;
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- uint32_t n;
-
- if (r->req.aiocb != NULL) {
- r->req.aiocb = NULL;
- bdrv_acct_done(s->qdev.conf.bs, &r->acct);
- }
- if (r->req.io_canceled) {
- goto done;
- }
-
- if (ret < 0) {
- if (scsi_handle_rw_error(r, -ret)) {
- goto done;
- }
- }
-
- /* The request is used as the AIO opaque value, so add a ref. */
- scsi_req_ref(&r->req);
-
- if (r->req.sg) {
- dma_acct_start(s->qdev.conf.bs, &r->acct, r->req.sg, BDRV_ACCT_READ);
- r->req.resid -= r->req.sg->size;
- r->req.aiocb = dma_bdrv_read(s->qdev.conf.bs, r->req.sg, r->sector,
- scsi_dma_complete, r);
- } else {
- n = scsi_init_iovec(r, SCSI_DMA_BUF_SIZE);
- bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_READ);
- r->req.aiocb = bdrv_aio_readv(s->qdev.conf.bs, r->sector, &r->qiov, n,
- scsi_read_complete, r);
- }
-
-done:
- if (!r->req.io_canceled) {
- scsi_req_unref(&r->req);
- }
-}
-
-/* Read more data from scsi device into buffer. */
-static void scsi_read_data(SCSIRequest *req)
-{
- SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- bool first;
-
- DPRINTF("Read sector_count=%d\n", r->sector_count);
- if (r->sector_count == 0) {
- /* This also clears the sense buffer for REQUEST SENSE. */
- scsi_req_complete(&r->req, GOOD);
- return;
- }
-
- /* No data transfer may already be in progress */
- assert(r->req.aiocb == NULL);
-
- /* The request is used as the AIO opaque value, so add a ref. */
- scsi_req_ref(&r->req);
- if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
- DPRINTF("Data transfer direction invalid\n");
- scsi_read_complete(r, -EINVAL);
- return;
- }
-
- if (s->tray_open) {
- scsi_read_complete(r, -ENOMEDIUM);
- return;
- }
-
- first = !r->started;
- r->started = true;
- if (first && scsi_is_cmd_fua(&r->req.cmd)) {
- bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
- r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_do_read, r);
- } else {
- scsi_do_read(r, 0);
- }
-}
-
-/*
- * scsi_handle_rw_error has two return values. 0 means that the error
- * must be ignored, 1 means that the error has been processed and the
- * caller should not do anything else for this request. Note that
- * scsi_handle_rw_error always manages its reference counts, independent
- * of the return value.
- */
-static int scsi_handle_rw_error(SCSIDiskReq *r, int error)
-{
- bool is_read = (r->req.cmd.xfer == SCSI_XFER_FROM_DEV);
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- BlockErrorAction action = bdrv_get_error_action(s->qdev.conf.bs, is_read, error);
-
- if (action == BDRV_ACTION_REPORT) {
- switch (error) {
- case ENOMEDIUM:
- scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
- break;
- case ENOMEM:
- scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE));
- break;
- case EINVAL:
- scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
- break;
- default:
- scsi_check_condition(r, SENSE_CODE(IO_ERROR));
- break;
- }
- }
- bdrv_error_action(s->qdev.conf.bs, action, is_read, error);
- if (action == BDRV_ACTION_STOP) {
- scsi_req_retry(&r->req);
- }
- return action != BDRV_ACTION_IGNORE;
-}
-
-static void scsi_write_complete(void * opaque, int ret)
-{
- SCSIDiskReq *r = (SCSIDiskReq *)opaque;
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- uint32_t n;
-
- if (r->req.aiocb != NULL) {
- r->req.aiocb = NULL;
- bdrv_acct_done(s->qdev.conf.bs, &r->acct);
- }
- if (r->req.io_canceled) {
- goto done;
- }
-
- if (ret < 0) {
- if (scsi_handle_rw_error(r, -ret)) {
- goto done;
- }
- }
-
- n = r->qiov.size / 512;
- r->sector += n;
- r->sector_count -= n;
- if (r->sector_count == 0) {
- scsi_write_do_fua(r);
- return;
- } else {
- scsi_init_iovec(r, SCSI_DMA_BUF_SIZE);
- DPRINTF("Write complete tag=0x%x more=%zd\n", r->req.tag, r->qiov.size);
- scsi_req_data(&r->req, r->qiov.size);
- }
-
-done:
- if (!r->req.io_canceled) {
- scsi_req_unref(&r->req);
- }
-}
-
-static void scsi_write_data(SCSIRequest *req)
-{
- SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- uint32_t n;
-
- /* No data transfer may already be in progress */
- assert(r->req.aiocb == NULL);
-
- /* The request is used as the AIO opaque value, so add a ref. */
- scsi_req_ref(&r->req);
- if (r->req.cmd.mode != SCSI_XFER_TO_DEV) {
- DPRINTF("Data transfer direction invalid\n");
- scsi_write_complete(r, -EINVAL);
- return;
- }
-
- if (!r->req.sg && !r->qiov.size) {
- /* Called for the first time. Ask the driver to send us more data. */
- r->started = true;
- scsi_write_complete(r, 0);
- return;
- }
- if (s->tray_open) {
- scsi_write_complete(r, -ENOMEDIUM);
- return;
- }
-
- if (r->req.cmd.buf[0] == VERIFY_10 || r->req.cmd.buf[0] == VERIFY_12 ||
- r->req.cmd.buf[0] == VERIFY_16) {
- if (r->req.sg) {
- scsi_dma_complete(r, 0);
- } else {
- scsi_write_complete(r, 0);
- }
- return;
- }
-
- if (r->req.sg) {
- dma_acct_start(s->qdev.conf.bs, &r->acct, r->req.sg, BDRV_ACCT_WRITE);
- r->req.resid -= r->req.sg->size;
- r->req.aiocb = dma_bdrv_write(s->qdev.conf.bs, r->req.sg, r->sector,
- scsi_dma_complete, r);
- } else {
- n = r->qiov.size / 512;
- bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_WRITE);
- r->req.aiocb = bdrv_aio_writev(s->qdev.conf.bs, r->sector, &r->qiov, n,
- scsi_write_complete, r);
- }
-}
-
-/* Return a pointer to the data buffer. */
-static uint8_t *scsi_get_buf(SCSIRequest *req)
-{
- SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
- return (uint8_t *)r->iov.iov_base;
-}
-
-static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
- int buflen = 0;
- int start;
-
- if (req->cmd.buf[1] & 0x1) {
- /* Vital product data */
- uint8_t page_code = req->cmd.buf[2];
-
- outbuf[buflen++] = s->qdev.type & 0x1f;
- outbuf[buflen++] = page_code ; // this page
- outbuf[buflen++] = 0x00;
- outbuf[buflen++] = 0x00;
- start = buflen;
-
- switch (page_code) {
- case 0x00: /* Supported page codes, mandatory */
- {
- DPRINTF("Inquiry EVPD[Supported pages] "
- "buffer size %zd\n", req->cmd.xfer);
- outbuf[buflen++] = 0x00; // list of supported pages (this page)
- if (s->serial) {
- outbuf[buflen++] = 0x80; // unit serial number
- }
- outbuf[buflen++] = 0x83; // device identification
- if (s->qdev.type == TYPE_DISK) {
- outbuf[buflen++] = 0xb0; // block limits
- outbuf[buflen++] = 0xb2; // thin provisioning
- }
- break;
- }
- case 0x80: /* Device serial number, optional */
- {
- int l;
-
- if (!s->serial) {
- DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
- return -1;
- }
-
- l = strlen(s->serial);
- if (l > 20) {
- l = 20;
- }
-
- DPRINTF("Inquiry EVPD[Serial number] "
- "buffer size %zd\n", req->cmd.xfer);
- memcpy(outbuf+buflen, s->serial, l);
- buflen += l;
- break;
- }
-
- case 0x83: /* Device identification page, mandatory */
- {
- const char *str = s->serial ?: bdrv_get_device_name(s->qdev.conf.bs);
- int max_len = s->serial ? 20 : 255 - 8;
- int id_len = strlen(str);
-
- if (id_len > max_len) {
- id_len = max_len;
- }
- DPRINTF("Inquiry EVPD[Device identification] "
- "buffer size %zd\n", req->cmd.xfer);
-
- outbuf[buflen++] = 0x2; // ASCII
- outbuf[buflen++] = 0; // not officially assigned
- outbuf[buflen++] = 0; // reserved
- outbuf[buflen++] = id_len; // length of data following
- memcpy(outbuf+buflen, str, id_len);
- buflen += id_len;
-
- if (s->wwn) {
- outbuf[buflen++] = 0x1; // Binary
- outbuf[buflen++] = 0x3; // NAA
- outbuf[buflen++] = 0; // reserved
- outbuf[buflen++] = 8;
- stq_be_p(&outbuf[buflen], s->wwn);
- buflen += 8;
- }
- break;
- }
- case 0xb0: /* block limits */
- {
- unsigned int unmap_sectors =
- s->qdev.conf.discard_granularity / s->qdev.blocksize;
- unsigned int min_io_size =
- s->qdev.conf.min_io_size / s->qdev.blocksize;
- unsigned int opt_io_size =
- s->qdev.conf.opt_io_size / s->qdev.blocksize;
-
- if (s->qdev.type == TYPE_ROM) {
- DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
- page_code);
- return -1;
- }
- /* required VPD size with unmap support */
- buflen = 0x40;
- memset(outbuf + 4, 0, buflen - 4);
-
- /* optimal transfer length granularity */
- outbuf[6] = (min_io_size >> 8) & 0xff;
- outbuf[7] = min_io_size & 0xff;
-
- /* optimal transfer length */
- outbuf[12] = (opt_io_size >> 24) & 0xff;
- outbuf[13] = (opt_io_size >> 16) & 0xff;
- outbuf[14] = (opt_io_size >> 8) & 0xff;
- outbuf[15] = opt_io_size & 0xff;
-
- /* optimal unmap granularity */
- outbuf[28] = (unmap_sectors >> 24) & 0xff;
- outbuf[29] = (unmap_sectors >> 16) & 0xff;
- outbuf[30] = (unmap_sectors >> 8) & 0xff;
- outbuf[31] = unmap_sectors & 0xff;
- break;
- }
- case 0xb2: /* thin provisioning */
- {
- buflen = 8;
- outbuf[4] = 0;
- outbuf[5] = 0xe0; /* unmap & write_same 10/16 all supported */
- outbuf[6] = s->qdev.conf.discard_granularity ? 2 : 1;
- outbuf[7] = 0;
- break;
- }
- default:
- return -1;
- }
- /* done with EVPD */
- assert(buflen - start <= 255);
- outbuf[start - 1] = buflen - start;
- return buflen;
- }
-
- /* Standard INQUIRY data */
- if (req->cmd.buf[2] != 0) {
- return -1;
- }
-
- /* PAGE CODE == 0 */
- buflen = req->cmd.xfer;
- if (buflen > SCSI_MAX_INQUIRY_LEN) {
- buflen = SCSI_MAX_INQUIRY_LEN;
- }
-
- outbuf[0] = s->qdev.type & 0x1f;
- outbuf[1] = (s->features & (1 << SCSI_DISK_F_REMOVABLE)) ? 0x80 : 0;
-
- strpadcpy((char *) &outbuf[16], 16, s->product, ' ');
- strpadcpy((char *) &outbuf[8], 8, s->vendor, ' ');
-
- memset(&outbuf[32], 0, 4);
- memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version)));
- /*
- * We claim conformance to SPC-3, which is required for guests
- * to ask for modern features like READ CAPACITY(16) or the
- * block characteristics VPD page by default. Not all of SPC-3
- * is actually implemented, but we're good enough.
- */
- outbuf[2] = 5;
- outbuf[3] = 2 | 0x10; /* Format 2, HiSup */
-
- if (buflen > 36) {
- outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */
- } else {
- /* If the allocation length of CDB is too small,
- the additional length is not adjusted */
- outbuf[4] = 36 - 5;
- }
-
- /* Sync data transfer and TCQ. */
- outbuf[7] = 0x10 | (req->bus->info->tcq ? 0x02 : 0);
- return buflen;
-}
-
-static inline bool media_is_dvd(SCSIDiskState *s)
-{
- uint64_t nb_sectors;
- if (s->qdev.type != TYPE_ROM) {
- return false;
- }
- if (!bdrv_is_inserted(s->qdev.conf.bs)) {
- return false;
- }
- bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
- return nb_sectors > CD_MAX_SECTORS;
-}
-
-static inline bool media_is_cd(SCSIDiskState *s)
-{
- uint64_t nb_sectors;
- if (s->qdev.type != TYPE_ROM) {
- return false;
- }
- if (!bdrv_is_inserted(s->qdev.conf.bs)) {
- return false;
- }
- bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
- return nb_sectors <= CD_MAX_SECTORS;
-}
-
-static int scsi_read_disc_information(SCSIDiskState *s, SCSIDiskReq *r,
- uint8_t *outbuf)
-{
- uint8_t type = r->req.cmd.buf[1] & 7;
-
- if (s->qdev.type != TYPE_ROM) {
- return -1;
- }
-
- /* Types 1/2 are only defined for Blu-Ray. */
- if (type != 0) {
- scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
- return -1;
- }
-
- memset(outbuf, 0, 34);
- outbuf[1] = 32;
- outbuf[2] = 0xe; /* last session complete, disc finalized */
- outbuf[3] = 1; /* first track on disc */
- outbuf[4] = 1; /* # of sessions */
- outbuf[5] = 1; /* first track of last session */
- outbuf[6] = 1; /* last track of last session */
- outbuf[7] = 0x20; /* unrestricted use */
- outbuf[8] = 0x00; /* CD-ROM or DVD-ROM */
- /* 9-10-11: most significant byte corresponding bytes 4-5-6 */
- /* 12-23: not meaningful for CD-ROM or DVD-ROM */
- /* 24-31: disc bar code */
- /* 32: disc application code */
- /* 33: number of OPC tables */
-
- return 34;
-}
-
-static int scsi_read_dvd_structure(SCSIDiskState *s, SCSIDiskReq *r,
- uint8_t *outbuf)
-{
- static const int rds_caps_size[5] = {
- [0] = 2048 + 4,
- [1] = 4 + 4,
- [3] = 188 + 4,
- [4] = 2048 + 4,
- };
-
- uint8_t media = r->req.cmd.buf[1];
- uint8_t layer = r->req.cmd.buf[6];
- uint8_t format = r->req.cmd.buf[7];
- int size = -1;
-
- if (s->qdev.type != TYPE_ROM) {
- return -1;
- }
- if (media != 0) {
- scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
- return -1;
- }
-
- if (format != 0xff) {
- if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
- scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
- return -1;
- }
- if (media_is_cd(s)) {
- scsi_check_condition(r, SENSE_CODE(INCOMPATIBLE_FORMAT));
- return -1;
- }
- if (format >= ARRAY_SIZE(rds_caps_size)) {
- return -1;
- }
- size = rds_caps_size[format];
- memset(outbuf, 0, size);
- }
-
- switch (format) {
- case 0x00: {
- /* Physical format information */
- uint64_t nb_sectors;
- if (layer != 0) {
- goto fail;
- }
- bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
-
- outbuf[4] = 1; /* DVD-ROM, part version 1 */
- outbuf[5] = 0xf; /* 120mm disc, minimum rate unspecified */
- outbuf[6] = 1; /* one layer, read-only (per MMC-2 spec) */
- outbuf[7] = 0; /* default densities */
-
- stl_be_p(&outbuf[12], (nb_sectors >> 2) - 1); /* end sector */
- stl_be_p(&outbuf[16], (nb_sectors >> 2) - 1); /* l0 end sector */
- break;
- }
-
- case 0x01: /* DVD copyright information, all zeros */
- break;
-
- case 0x03: /* BCA information - invalid field for no BCA info */
- return -1;
-
- case 0x04: /* DVD disc manufacturing information, all zeros */
- break;
-
- case 0xff: { /* List capabilities */
- int i;
- size = 4;
- for (i = 0; i < ARRAY_SIZE(rds_caps_size); i++) {
- if (!rds_caps_size[i]) {
- continue;
- }
- outbuf[size] = i;
- outbuf[size + 1] = 0x40; /* Not writable, readable */
- stw_be_p(&outbuf[size + 2], rds_caps_size[i]);
- size += 4;
- }
- break;
- }
-
- default:
- return -1;
- }
-
- /* Size of buffer, not including 2 byte size field */
- stw_be_p(outbuf, size - 2);
- return size;
-
-fail:
- return -1;
-}
-
-static int scsi_event_status_media(SCSIDiskState *s, uint8_t *outbuf)
-{
- uint8_t event_code, media_status;
-
- media_status = 0;
- if (s->tray_open) {
- media_status = MS_TRAY_OPEN;
- } else if (bdrv_is_inserted(s->qdev.conf.bs)) {
- media_status = MS_MEDIA_PRESENT;
- }
-
- /* Event notification descriptor */
- event_code = MEC_NO_CHANGE;
- if (media_status != MS_TRAY_OPEN) {
- if (s->media_event) {
- event_code = MEC_NEW_MEDIA;
- s->media_event = false;
- } else if (s->eject_request) {
- event_code = MEC_EJECT_REQUESTED;
- s->eject_request = false;
- }
- }
-
- outbuf[0] = event_code;
- outbuf[1] = media_status;
-
- /* These fields are reserved, just clear them. */
- outbuf[2] = 0;
- outbuf[3] = 0;
- return 4;
-}
-
-static int scsi_get_event_status_notification(SCSIDiskState *s, SCSIDiskReq *r,
- uint8_t *outbuf)
-{
- int size;
- uint8_t *buf = r->req.cmd.buf;
- uint8_t notification_class_request = buf[4];
- if (s->qdev.type != TYPE_ROM) {
- return -1;
- }
- if ((buf[1] & 1) == 0) {
- /* asynchronous */
- return -1;
- }
-
- size = 4;
- outbuf[0] = outbuf[1] = 0;
- outbuf[3] = 1 << GESN_MEDIA; /* supported events */
- if (notification_class_request & (1 << GESN_MEDIA)) {
- outbuf[2] = GESN_MEDIA;
- size += scsi_event_status_media(s, &outbuf[size]);
- } else {
- outbuf[2] = 0x80;
- }
- stw_be_p(outbuf, size - 4);
- return size;
-}
-
-static int scsi_get_configuration(SCSIDiskState *s, uint8_t *outbuf)
-{
- int current;
-
- if (s->qdev.type != TYPE_ROM) {
- return -1;
- }
- current = media_is_dvd(s) ? MMC_PROFILE_DVD_ROM : MMC_PROFILE_CD_ROM;
- memset(outbuf, 0, 40);
- stl_be_p(&outbuf[0], 36); /* Bytes after the data length field */
- stw_be_p(&outbuf[6], current);
- /* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
- outbuf[10] = 0x03; /* persistent, current */
- outbuf[11] = 8; /* two profiles */
- stw_be_p(&outbuf[12], MMC_PROFILE_DVD_ROM);
- outbuf[14] = (current == MMC_PROFILE_DVD_ROM);
- stw_be_p(&outbuf[16], MMC_PROFILE_CD_ROM);
- outbuf[18] = (current == MMC_PROFILE_CD_ROM);
- /* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
- stw_be_p(&outbuf[20], 1);
- outbuf[22] = 0x08 | 0x03; /* version 2, persistent, current */
- outbuf[23] = 8;
- stl_be_p(&outbuf[24], 1); /* SCSI */
- outbuf[28] = 1; /* DBE = 1, mandatory */
- /* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
- stw_be_p(&outbuf[32], 3);
- outbuf[34] = 0x08 | 0x03; /* version 2, persistent, current */
- outbuf[35] = 4;
- outbuf[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */
- /* TODO: Random readable, CD read, DVD read, drive serial number,
- power management */
- return 40;
-}
-
-static int scsi_emulate_mechanism_status(SCSIDiskState *s, uint8_t *outbuf)
-{
- if (s->qdev.type != TYPE_ROM) {
- return -1;
- }
- memset(outbuf, 0, 8);
- outbuf[5] = 1; /* CD-ROM */
- return 8;
-}
-
-static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf,
- int page_control)
-{
- static const int mode_sense_valid[0x3f] = {
- [MODE_PAGE_HD_GEOMETRY] = (1 << TYPE_DISK),
- [MODE_PAGE_FLEXIBLE_DISK_GEOMETRY] = (1 << TYPE_DISK),
- [MODE_PAGE_CACHING] = (1 << TYPE_DISK) | (1 << TYPE_ROM),
- [MODE_PAGE_R_W_ERROR] = (1 << TYPE_DISK) | (1 << TYPE_ROM),
- [MODE_PAGE_AUDIO_CTL] = (1 << TYPE_ROM),
- [MODE_PAGE_CAPABILITIES] = (1 << TYPE_ROM),
- };
-
- uint8_t *p = *p_outbuf + 2;
- int length;
-
- if ((mode_sense_valid[page] & (1 << s->qdev.type)) == 0) {
- return -1;
- }
-
- /*
- * If Changeable Values are requested, a mask denoting those mode parameters
- * that are changeable shall be returned. As we currently don't support
- * parameter changes via MODE_SELECT all bits are returned set to zero.
- * The buffer was already menset to zero by the caller of this function.
- *
- * The offsets here are off by two compared to the descriptions in the
- * SCSI specs, because those include a 2-byte header. This is unfortunate,
- * but it is done so that offsets are consistent within our implementation
- * of MODE SENSE and MODE SELECT. MODE SELECT has to deal with both
- * 2-byte and 4-byte headers.
- */
- switch (page) {
- case MODE_PAGE_HD_GEOMETRY:
- length = 0x16;
- if (page_control == 1) { /* Changeable Values */
- break;
- }
- /* if a geometry hint is available, use it */
- p[0] = (s->qdev.conf.cyls >> 16) & 0xff;
- p[1] = (s->qdev.conf.cyls >> 8) & 0xff;
- p[2] = s->qdev.conf.cyls & 0xff;
- p[3] = s->qdev.conf.heads & 0xff;
- /* Write precomp start cylinder, disabled */
- p[4] = (s->qdev.conf.cyls >> 16) & 0xff;
- p[5] = (s->qdev.conf.cyls >> 8) & 0xff;
- p[6] = s->qdev.conf.cyls & 0xff;
- /* Reduced current start cylinder, disabled */
- p[7] = (s->qdev.conf.cyls >> 16) & 0xff;
- p[8] = (s->qdev.conf.cyls >> 8) & 0xff;
- p[9] = s->qdev.conf.cyls & 0xff;
- /* Device step rate [ns], 200ns */
- p[10] = 0;
- p[11] = 200;
- /* Landing zone cylinder */
- p[12] = 0xff;
- p[13] = 0xff;
- p[14] = 0xff;
- /* Medium rotation rate [rpm], 5400 rpm */
- p[18] = (5400 >> 8) & 0xff;
- p[19] = 5400 & 0xff;
- break;
-
- case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY:
- length = 0x1e;
- if (page_control == 1) { /* Changeable Values */
- break;
- }
- /* Transfer rate [kbit/s], 5Mbit/s */
- p[0] = 5000 >> 8;
- p[1] = 5000 & 0xff;
- /* if a geometry hint is available, use it */
- p[2] = s->qdev.conf.heads & 0xff;
- p[3] = s->qdev.conf.secs & 0xff;
- p[4] = s->qdev.blocksize >> 8;
- p[6] = (s->qdev.conf.cyls >> 8) & 0xff;
- p[7] = s->qdev.conf.cyls & 0xff;
- /* Write precomp start cylinder, disabled */
- p[8] = (s->qdev.conf.cyls >> 8) & 0xff;
- p[9] = s->qdev.conf.cyls & 0xff;
- /* Reduced current start cylinder, disabled */
- p[10] = (s->qdev.conf.cyls >> 8) & 0xff;
- p[11] = s->qdev.conf.cyls & 0xff;
- /* Device step rate [100us], 100us */
- p[12] = 0;
- p[13] = 1;
- /* Device step pulse width [us], 1us */
- p[14] = 1;
- /* Device head settle delay [100us], 100us */
- p[15] = 0;
- p[16] = 1;
- /* Motor on delay [0.1s], 0.1s */
- p[17] = 1;
- /* Motor off delay [0.1s], 0.1s */
- p[18] = 1;
- /* Medium rotation rate [rpm], 5400 rpm */
- p[26] = (5400 >> 8) & 0xff;
- p[27] = 5400 & 0xff;
- break;
-
- case MODE_PAGE_CACHING:
- length = 0x12;
- if (page_control == 1 || /* Changeable Values */
- bdrv_enable_write_cache(s->qdev.conf.bs)) {
- p[0] = 4; /* WCE */
- }
- break;
-
- case MODE_PAGE_R_W_ERROR:
- length = 10;
- if (page_control == 1) { /* Changeable Values */
- break;
- }
- p[0] = 0x80; /* Automatic Write Reallocation Enabled */
- if (s->qdev.type == TYPE_ROM) {
- p[1] = 0x20; /* Read Retry Count */
- }
- break;
-
- case MODE_PAGE_AUDIO_CTL:
- length = 14;
- break;
-
- case MODE_PAGE_CAPABILITIES:
- length = 0x14;
- if (page_control == 1) { /* Changeable Values */
- break;
- }
-
- p[0] = 0x3b; /* CD-R & CD-RW read */
- p[1] = 0; /* Writing not supported */
- p[2] = 0x7f; /* Audio, composite, digital out,
- mode 2 form 1&2, multi session */
- p[3] = 0xff; /* CD DA, DA accurate, RW supported,
- RW corrected, C2 errors, ISRC,
- UPC, Bar code */
- p[4] = 0x2d | (s->tray_locked ? 2 : 0);
- /* Locking supported, jumper present, eject, tray */
- p[5] = 0; /* no volume & mute control, no
- changer */
- p[6] = (50 * 176) >> 8; /* 50x read speed */
- p[7] = (50 * 176) & 0xff;
- p[8] = 2 >> 8; /* Two volume levels */
- p[9] = 2 & 0xff;
- p[10] = 2048 >> 8; /* 2M buffer */
- p[11] = 2048 & 0xff;
- p[12] = (16 * 176) >> 8; /* 16x read speed current */
- p[13] = (16 * 176) & 0xff;
- p[16] = (16 * 176) >> 8; /* 16x write speed */
- p[17] = (16 * 176) & 0xff;
- p[18] = (16 * 176) >> 8; /* 16x write speed current */
- p[19] = (16 * 176) & 0xff;
- break;
-
- default:
- return -1;
- }
-
- assert(length < 256);
- (*p_outbuf)[0] = page;
- (*p_outbuf)[1] = length;
- *p_outbuf += length + 2;
- return length + 2;
-}
-
-static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- uint64_t nb_sectors;
- bool dbd;
- int page, buflen, ret, page_control;
- uint8_t *p;
- uint8_t dev_specific_param;
-
- dbd = (r->req.cmd.buf[1] & 0x8) != 0;
- page = r->req.cmd.buf[2] & 0x3f;
- page_control = (r->req.cmd.buf[2] & 0xc0) >> 6;
- DPRINTF("Mode Sense(%d) (page %d, xfer %zd, page_control %d)\n",
- (r->req.cmd.buf[0] == MODE_SENSE) ? 6 : 10, page, r->req.cmd.xfer, page_control);
- memset(outbuf, 0, r->req.cmd.xfer);
- p = outbuf;
-
- if (s->qdev.type == TYPE_DISK) {
- dev_specific_param = s->features & (1 << SCSI_DISK_F_DPOFUA) ? 0x10 : 0;
- if (bdrv_is_read_only(s->qdev.conf.bs)) {
- dev_specific_param |= 0x80; /* Readonly. */
- }
- } else {
- /* MMC prescribes that CD/DVD drives have no block descriptors,
- * and defines no device-specific parameter. */
- dev_specific_param = 0x00;
- dbd = true;
- }
-
- if (r->req.cmd.buf[0] == MODE_SENSE) {
- p[1] = 0; /* Default media type. */
- p[2] = dev_specific_param;
- p[3] = 0; /* Block descriptor length. */
- p += 4;
- } else { /* MODE_SENSE_10 */
- p[2] = 0; /* Default media type. */
- p[3] = dev_specific_param;
- p[6] = p[7] = 0; /* Block descriptor length. */
- p += 8;
- }
-
- bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
- if (!dbd && nb_sectors) {
- if (r->req.cmd.buf[0] == MODE_SENSE) {
- outbuf[3] = 8; /* Block descriptor length */
- } else { /* MODE_SENSE_10 */
- outbuf[7] = 8; /* Block descriptor length */
- }
- nb_sectors /= (s->qdev.blocksize / 512);
- if (nb_sectors > 0xffffff) {
- nb_sectors = 0;
- }
- p[0] = 0; /* media density code */
- p[1] = (nb_sectors >> 16) & 0xff;
- p[2] = (nb_sectors >> 8) & 0xff;
- p[3] = nb_sectors & 0xff;
- p[4] = 0; /* reserved */
- p[5] = 0; /* bytes 5-7 are the sector size in bytes */
- p[6] = s->qdev.blocksize >> 8;
- p[7] = 0;
- p += 8;
- }
-
- if (page_control == 3) {
- /* Saved Values */
- scsi_check_condition(r, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED));
- return -1;
- }
-
- if (page == 0x3f) {
- for (page = 0; page <= 0x3e; page++) {
- mode_sense_page(s, page, &p, page_control);
- }
- } else {
- ret = mode_sense_page(s, page, &p, page_control);
- if (ret == -1) {
- return -1;
- }
- }
-
- buflen = p - outbuf;
- /*
- * The mode data length field specifies the length in bytes of the
- * following data that is available to be transferred. The mode data
- * length does not include itself.
- */
- if (r->req.cmd.buf[0] == MODE_SENSE) {
- outbuf[0] = buflen - 1;
- } else { /* MODE_SENSE_10 */
- outbuf[0] = ((buflen - 2) >> 8) & 0xff;
- outbuf[1] = (buflen - 2) & 0xff;
- }
- return buflen;
-}
-
-static int scsi_disk_emulate_read_toc(SCSIRequest *req, uint8_t *outbuf)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
- int start_track, format, msf, toclen;
- uint64_t nb_sectors;
-
- msf = req->cmd.buf[1] & 2;
- format = req->cmd.buf[2] & 0xf;
- start_track = req->cmd.buf[6];
- bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
- DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1);
- nb_sectors /= s->qdev.blocksize / 512;
- switch (format) {
- case 0:
- toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track);
- break;
- case 1:
- /* multi session : only a single session defined */
- toclen = 12;
- memset(outbuf, 0, 12);
- outbuf[1] = 0x0a;
- outbuf[2] = 0x01;
- outbuf[3] = 0x01;
- break;
- case 2:
- toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track);
- break;
- default:
- return -1;
- }
- return toclen;
-}
-
-static int scsi_disk_emulate_start_stop(SCSIDiskReq *r)
-{
- SCSIRequest *req = &r->req;
- 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->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)
- ? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED)
- : SENSE_CODE(NOT_READY_REMOVAL_PREVENTED));
- return -1;
- }
-
- if (s->tray_open != !start) {
- bdrv_eject(s->qdev.conf.bs, !start);
- s->tray_open = !start;
- }
- }
- return 0;
-}
-
-static void scsi_disk_emulate_read_data(SCSIRequest *req)
-{
- SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
- int buflen = r->iov.iov_len;
-
- if (buflen) {
- DPRINTF("Read buf_len=%d\n", buflen);
- r->iov.iov_len = 0;
- r->started = true;
- scsi_req_data(&r->req, buflen);
- return;
- }
-
- /* This also clears the sense buffer for REQUEST SENSE. */
- scsi_req_complete(&r->req, GOOD);
-}
-
-static int scsi_disk_check_mode_select(SCSIDiskState *s, int page,
- uint8_t *inbuf, int inlen)
-{
- uint8_t mode_current[SCSI_MAX_MODE_LEN];
- uint8_t mode_changeable[SCSI_MAX_MODE_LEN];
- uint8_t *p;
- int len, expected_len, changeable_len, i;
-
- /* The input buffer does not include the page header, so it is
- * off by 2 bytes.
- */
- expected_len = inlen + 2;
- if (expected_len > SCSI_MAX_MODE_LEN) {
- return -1;
- }
-
- p = mode_current;
- memset(mode_current, 0, inlen + 2);
- len = mode_sense_page(s, page, &p, 0);
- if (len < 0 || len != expected_len) {
- return -1;
- }
-
- p = mode_changeable;
- memset(mode_changeable, 0, inlen + 2);
- changeable_len = mode_sense_page(s, page, &p, 1);
- assert(changeable_len == len);
-
- /* Check that unchangeable bits are the same as what MODE SENSE
- * would return.
- */
- for (i = 2; i < len; i++) {
- if (((mode_current[i] ^ inbuf[i - 2]) & ~mode_changeable[i]) != 0) {
- return -1;
- }
- }
- return 0;
-}
-
-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)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-
- while (len > 0) {
- int page, subpage, page_len;
-
- /* Parse both possible formats for the mode page headers. */
- page = p[0] & 0x3f;
- if (p[0] & 0x40) {
- if (len < 4) {
- goto invalid_param_len;
- }
- subpage = p[1];
- page_len = lduw_be_p(&p[2]);
- p += 4;
- len -= 4;
- } else {
- if (len < 2) {
- goto invalid_param_len;
- }
- subpage = 0;
- page_len = p[1];
- p += 2;
- len -= 2;
- }
-
- if (subpage) {
- goto invalid_param;
- }
- if (page_len > len) {
- goto invalid_param_len;
- }
-
- if (!change) {
- if (scsi_disk_check_mode_select(s, page, p, page_len) < 0) {
- goto invalid_param;
- }
- } else {
- scsi_disk_apply_mode_select(s, page, p);
- }
-
- p += page_len;
- len -= page_len;
- }
- return 0;
-
-invalid_param:
- scsi_check_condition(r, SENSE_CODE(INVALID_PARAM));
- return -1;
-
-invalid_param_len:
- scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
- return -1;
-}
-
-static void scsi_disk_emulate_mode_select(SCSIDiskReq *r, uint8_t *inbuf)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- uint8_t *p = inbuf;
- int cmd = r->req.cmd.buf[0];
- int len = r->req.cmd.xfer;
- int hdr_len = (cmd == MODE_SELECT ? 4 : 8);
- int bd_len;
- int pass;
-
- /* We only support PF=1, SP=0. */
- if ((r->req.cmd.buf[1] & 0x11) != 0x10) {
- goto invalid_field;
- }
-
- if (len < hdr_len) {
- goto invalid_param_len;
- }
-
- bd_len = (cmd == MODE_SELECT ? p[3] : lduw_be_p(&p[6]));
- len -= hdr_len;
- p += hdr_len;
- if (len < bd_len) {
- goto invalid_param_len;
- }
- if (bd_len != 0 && bd_len != 8) {
- goto invalid_param;
- }
-
- len -= bd_len;
- p += bd_len;
-
- /* Ensure no change is made if there is an error! */
- for (pass = 0; pass < 2; pass++) {
- if (mode_select_pages(r, p, len, pass == 1) < 0) {
- assert(pass == 0);
- return;
- }
- }
- if (!bdrv_enable_write_cache(s->qdev.conf.bs)) {
- /* The request is used as the AIO opaque value, so add a ref. */
- scsi_req_ref(&r->req);
- bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
- r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r);
- return;
- }
-
- scsi_req_complete(&r->req, GOOD);
- return;
-
-invalid_param:
- scsi_check_condition(r, SENSE_CODE(INVALID_PARAM));
- return;
-
-invalid_param_len:
- scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
- return;
-
-invalid_field:
- scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
-}
-
-static inline bool check_lba_range(SCSIDiskState *s,
- uint64_t sector_num, uint32_t nb_sectors)
-{
- /*
- * The first line tests that no overflow happens when computing the last
- * sector. The second line tests that the last accessed sector is in
- * range.
- *
- * Careful, the computations should not underflow for nb_sectors == 0,
- * and a 0-block read to the first LBA beyond the end of device is
- * valid.
- */
- return (sector_num <= sector_num + nb_sectors &&
- sector_num + nb_sectors <= s->qdev.max_lba + 1);
-}
-
-typedef struct UnmapCBData {
- SCSIDiskReq *r;
- uint8_t *inbuf;
- int count;
-} UnmapCBData;
-
-static void scsi_unmap_complete(void *opaque, int ret)
-{
- UnmapCBData *data = opaque;
- SCSIDiskReq *r = data->r;
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- uint64_t sector_num;
- uint32_t nb_sectors;
-
- r->req.aiocb = NULL;
- if (r->req.io_canceled) {
- goto done;
- }
-
- if (ret < 0) {
- if (scsi_handle_rw_error(r, -ret)) {
- goto done;
- }
- }
-
- if (data->count > 0) {
- sector_num = ldq_be_p(&data->inbuf[0]);
- nb_sectors = ldl_be_p(&data->inbuf[8]) & 0xffffffffULL;
- if (!check_lba_range(s, sector_num, nb_sectors)) {
- scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
- goto done;
- }
-
- r->req.aiocb = bdrv_aio_discard(s->qdev.conf.bs,
- sector_num * (s->qdev.blocksize / 512),
- nb_sectors * (s->qdev.blocksize / 512),
- scsi_unmap_complete, data);
- data->count--;
- data->inbuf += 16;
- return;
- }
-
- scsi_req_complete(&r->req, GOOD);
-
-done:
- if (!r->req.io_canceled) {
- scsi_req_unref(&r->req);
- }
- g_free(data);
-}
-
-static void scsi_disk_emulate_unmap(SCSIDiskReq *r, uint8_t *inbuf)
-{
- uint8_t *p = inbuf;
- int len = r->req.cmd.xfer;
- UnmapCBData *data;
-
- if (len < 8) {
- goto invalid_param_len;
- }
- if (len < lduw_be_p(&p[0]) + 2) {
- goto invalid_param_len;
- }
- if (len < lduw_be_p(&p[2]) + 8) {
- goto invalid_param_len;
- }
- if (lduw_be_p(&p[2]) & 15) {
- goto invalid_param_len;
- }
-
- data = g_new0(UnmapCBData, 1);
- data->r = r;
- data->inbuf = &p[8];
- data->count = lduw_be_p(&p[2]) >> 4;
-
- /* The matching unref is in scsi_unmap_complete, before data is freed. */
- scsi_req_ref(&r->req);
- scsi_unmap_complete(data, 0);
- return;
-
-invalid_param_len:
- scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
-}
-
-static void scsi_disk_emulate_write_data(SCSIRequest *req)
-{
- SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
- if (r->iov.iov_len) {
- int buflen = r->iov.iov_len;
- DPRINTF("Write buf_len=%d\n", buflen);
- r->iov.iov_len = 0;
- scsi_req_data(&r->req, buflen);
- return;
- }
-
- switch (req->cmd.buf[0]) {
- case MODE_SELECT:
- case MODE_SELECT_10:
- /* This also clears the sense buffer for REQUEST SENSE. */
- scsi_disk_emulate_mode_select(r, r->iov.iov_base);
- break;
-
- case UNMAP:
- scsi_disk_emulate_unmap(r, r->iov.iov_base);
- break;
-
- default:
- abort();
- }
-}
-
-static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf)
-{
- SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
- uint64_t nb_sectors;
- uint8_t *outbuf;
- int buflen;
-
- switch (req->cmd.buf[0]) {
- case INQUIRY:
- case MODE_SENSE:
- case MODE_SENSE_10:
- case RESERVE:
- case RESERVE_10:
- case RELEASE:
- case RELEASE_10:
- case START_STOP:
- case ALLOW_MEDIUM_REMOVAL:
- case GET_CONFIGURATION:
- case GET_EVENT_STATUS_NOTIFICATION:
- case MECHANISM_STATUS:
- case REQUEST_SENSE:
- break;
-
- default:
- if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
- scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
- return 0;
- }
- break;
- }
-
- /*
- * FIXME: we shouldn't return anything bigger than 4k, but the code
- * requires the buffer to be as big as req->cmd.xfer in several
- * places. So, do not allow CDBs with a very large ALLOCATION
- * LENGTH. The real fix would be to modify scsi_read_data and
- * dma_buf_read, so that they return data beyond the buflen
- * as all zeros.
- */
- if (req->cmd.xfer > 65536) {
- goto illegal_request;
- }
- r->buflen = MAX(4096, req->cmd.xfer);
-
- if (!r->iov.iov_base) {
- r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen);
- }
-
- buflen = req->cmd.xfer;
- outbuf = r->iov.iov_base;
- memset(outbuf, 0, r->buflen);
- switch (req->cmd.buf[0]) {
- case TEST_UNIT_READY:
- assert(!s->tray_open && bdrv_is_inserted(s->qdev.conf.bs));
- break;
- case INQUIRY:
- buflen = scsi_disk_emulate_inquiry(req, outbuf);
- if (buflen < 0) {
- goto illegal_request;
- }
- break;
- case MODE_SENSE:
- case MODE_SENSE_10:
- buflen = scsi_disk_emulate_mode_sense(r, outbuf);
- if (buflen < 0) {
- goto illegal_request;
- }
- break;
- case READ_TOC:
- buflen = scsi_disk_emulate_read_toc(req, outbuf);
- if (buflen < 0) {
- goto illegal_request;
- }
- break;
- case RESERVE:
- if (req->cmd.buf[1] & 1) {
- goto illegal_request;
- }
- break;
- case RESERVE_10:
- if (req->cmd.buf[1] & 3) {
- goto illegal_request;
- }
- break;
- case RELEASE:
- if (req->cmd.buf[1] & 1) {
- goto illegal_request;
- }
- break;
- case RELEASE_10:
- if (req->cmd.buf[1] & 3) {
- goto illegal_request;
- }
- break;
- case START_STOP:
- if (scsi_disk_emulate_start_stop(r) < 0) {
- return 0;
- }
- break;
- case ALLOW_MEDIUM_REMOVAL:
- s->tray_locked = req->cmd.buf[4] & 1;
- bdrv_lock_medium(s->qdev.conf.bs, req->cmd.buf[4] & 1);
- break;
- case READ_CAPACITY_10:
- /* The normal LEN field for this command is zero. */
- memset(outbuf, 0, 8);
- bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
- if (!nb_sectors) {
- scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY));
- return 0;
- }
- if ((req->cmd.buf[8] & 1) == 0 && req->cmd.lba) {
- goto illegal_request;
- }
- nb_sectors /= s->qdev.blocksize / 512;
- /* Returned value is the address of the last sector. */
- nb_sectors--;
- /* Remember the new size for read/write sanity checking. */
- s->qdev.max_lba = nb_sectors;
- /* Clip to 2TB, instead of returning capacity modulo 2TB. */
- if (nb_sectors > UINT32_MAX) {
- nb_sectors = UINT32_MAX;
- }
- outbuf[0] = (nb_sectors >> 24) & 0xff;
- outbuf[1] = (nb_sectors >> 16) & 0xff;
- outbuf[2] = (nb_sectors >> 8) & 0xff;
- outbuf[3] = nb_sectors & 0xff;
- outbuf[4] = 0;
- outbuf[5] = 0;
- outbuf[6] = s->qdev.blocksize >> 8;
- outbuf[7] = 0;
- break;
- case REQUEST_SENSE:
- /* Just return "NO SENSE". */
- buflen = scsi_build_sense(NULL, 0, outbuf, r->buflen,
- (req->cmd.buf[1] & 1) == 0);
- if (buflen < 0) {
- goto illegal_request;
- }
- break;
- case MECHANISM_STATUS:
- buflen = scsi_emulate_mechanism_status(s, outbuf);
- if (buflen < 0) {
- goto illegal_request;
- }
- break;
- case GET_CONFIGURATION:
- buflen = scsi_get_configuration(s, outbuf);
- if (buflen < 0) {
- goto illegal_request;
- }
- break;
- case GET_EVENT_STATUS_NOTIFICATION:
- buflen = scsi_get_event_status_notification(s, r, outbuf);
- if (buflen < 0) {
- goto illegal_request;
- }
- break;
- case READ_DISC_INFORMATION:
- buflen = scsi_read_disc_information(s, r, outbuf);
- if (buflen < 0) {
- goto illegal_request;
- }
- break;
- case READ_DVD_STRUCTURE:
- buflen = scsi_read_dvd_structure(s, r, outbuf);
- if (buflen < 0) {
- goto illegal_request;
- }
- break;
- case SERVICE_ACTION_IN_16:
- /* Service Action In subcommands. */
- if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) {
- DPRINTF("SAI READ CAPACITY(16)\n");
- memset(outbuf, 0, req->cmd.xfer);
- bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
- if (!nb_sectors) {
- scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY));
- return 0;
- }
- if ((req->cmd.buf[14] & 1) == 0 && req->cmd.lba) {
- goto illegal_request;
- }
- nb_sectors /= s->qdev.blocksize / 512;
- /* Returned value is the address of the last sector. */
- nb_sectors--;
- /* Remember the new size for read/write sanity checking. */
- s->qdev.max_lba = nb_sectors;
- outbuf[0] = (nb_sectors >> 56) & 0xff;
- outbuf[1] = (nb_sectors >> 48) & 0xff;
- outbuf[2] = (nb_sectors >> 40) & 0xff;
- outbuf[3] = (nb_sectors >> 32) & 0xff;
- outbuf[4] = (nb_sectors >> 24) & 0xff;
- outbuf[5] = (nb_sectors >> 16) & 0xff;
- outbuf[6] = (nb_sectors >> 8) & 0xff;
- outbuf[7] = nb_sectors & 0xff;
- outbuf[8] = 0;
- outbuf[9] = 0;
- outbuf[10] = s->qdev.blocksize >> 8;
- outbuf[11] = 0;
- outbuf[12] = 0;
- outbuf[13] = get_physical_block_exp(&s->qdev.conf);
-
- /* set TPE bit if the format supports discard */
- if (s->qdev.conf.discard_granularity) {
- outbuf[14] = 0x80;
- }
-
- /* Protection, exponent and lowest lba field left blank. */
- break;
- }
- DPRINTF("Unsupported Service Action In\n");
- goto illegal_request;
- case SYNCHRONIZE_CACHE:
- /* The request is used as the AIO opaque value, so add a ref. */
- scsi_req_ref(&r->req);
- bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
- r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r);
- return 0;
- case SEEK_10:
- DPRINTF("Seek(10) (sector %" PRId64 ")\n", r->req.cmd.lba);
- if (r->req.cmd.lba > s->qdev.max_lba) {
- goto illegal_lba;
- }
- break;
- case MODE_SELECT:
- DPRINTF("Mode Select(6) (len %lu)\n", (long)r->req.cmd.xfer);
- break;
- case MODE_SELECT_10:
- DPRINTF("Mode Select(10) (len %lu)\n", (long)r->req.cmd.xfer);
- break;
- case UNMAP:
- DPRINTF("Unmap (len %lu)\n", (long)r->req.cmd.xfer);
- break;
- case WRITE_SAME_10:
- case WRITE_SAME_16:
- nb_sectors = scsi_data_cdb_length(r->req.cmd.buf);
- if (bdrv_is_read_only(s->qdev.conf.bs)) {
- scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
- return 0;
- }
- if (!check_lba_range(s, r->req.cmd.lba, nb_sectors)) {
- goto illegal_lba;
- }
-
- /*
- * We only support WRITE SAME with the unmap bit set for now.
- */
- if (!(req->cmd.buf[1] & 0x8)) {
- goto illegal_request;
- }
-
- /* The request is used as the AIO opaque value, so add a ref. */
- scsi_req_ref(&r->req);
- r->req.aiocb = bdrv_aio_discard(s->qdev.conf.bs,
- r->req.cmd.lba * (s->qdev.blocksize / 512),
- nb_sectors * (s->qdev.blocksize / 512),
- scsi_aio_complete, r);
- return 0;
- default:
- DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]);
- scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE));
- return 0;
- }
- assert(!r->req.aiocb);
- r->iov.iov_len = MIN(r->buflen, req->cmd.xfer);
- if (r->iov.iov_len == 0) {
- scsi_req_complete(&r->req, GOOD);
- }
- if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
- assert(r->iov.iov_len == req->cmd.xfer);
- return -r->iov.iov_len;
- } else {
- return r->iov.iov_len;
- }
-
-illegal_request:
- if (r->req.status == -1) {
- scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
- }
- return 0;
-
-illegal_lba:
- scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
- return 0;
-}
-
-/* Execute a scsi command. Returns the length of the data expected by the
- command. This will be Positive for data transfers from the device
- (eg. disk reads), negative for transfers to the device (eg. disk writes),
- and zero if the command does not transfer any data. */
-
-static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf)
-{
- SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
- uint32_t len;
- uint8_t command;
-
- command = buf[0];
-
- if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
- scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
- return 0;
- }
-
- len = scsi_data_cdb_length(r->req.cmd.buf);
- switch (command) {
- case READ_6:
- case READ_10:
- case READ_12:
- case READ_16:
- DPRINTF("Read (sector %" PRId64 ", count %u)\n", r->req.cmd.lba, len);
- if (r->req.cmd.buf[1] & 0xe0) {
- goto illegal_request;
- }
- if (!check_lba_range(s, r->req.cmd.lba, len)) {
- goto illegal_lba;
- }
- r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
- r->sector_count = len * (s->qdev.blocksize / 512);
- break;
- case WRITE_6:
- case WRITE_10:
- case WRITE_12:
- case WRITE_16:
- 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:
- DPRINTF("Write %s(sector %" PRId64 ", count %u)\n",
- (command & 0xe) == 0xe ? "And Verify " : "",
- r->req.cmd.lba, len);
- if (r->req.cmd.buf[1] & 0xe0) {
- goto illegal_request;
- }
- if (!check_lba_range(s, r->req.cmd.lba, len)) {
- goto illegal_lba;
- }
- r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
- r->sector_count = len * (s->qdev.blocksize / 512);
- 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;
- }
- if (r->sector_count == 0) {
- scsi_req_complete(&r->req, GOOD);
- }
- assert(r->iov.iov_len == 0);
- if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
- return -r->sector_count * 512;
- } else {
- return r->sector_count * 512;
- }
-}
-
-static void scsi_disk_reset(DeviceState *dev)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev);
- uint64_t nb_sectors;
-
- scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET));
-
- bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
- nb_sectors /= s->qdev.blocksize / 512;
- if (nb_sectors) {
- nb_sectors--;
- }
- s->qdev.max_lba = nb_sectors;
-}
-
-static void scsi_destroy(SCSIDevice *dev)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
-
- scsi_device_purge_requests(&s->qdev, SENSE_CODE(NO_SENSE));
- 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_report_change(&s->qdev, SENSE_CODE(CAPACITY_CHANGED));
- }
-}
-
-static void scsi_cd_change_media_cb(void *opaque, bool load)
-{
- SCSIDiskState *s = opaque;
-
- /*
- * When a CD gets changed, we have to report an ejected state and
- * then a loaded state to guests so that they detect tray
- * open/close and media change events. Guests that do not use
- * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
- * states rely on this behavior.
- *
- * media_changed governs the state machine used for unit attention
- * report. media_event is used by GET EVENT STATUS NOTIFICATION.
- */
- s->media_changed = load;
- s->tray_open = !load;
- scsi_device_set_ua(&s->qdev, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM));
- s->media_event = true;
- s->eject_request = false;
-}
-
-static void scsi_cd_eject_request_cb(void *opaque, bool force)
-{
- SCSIDiskState *s = opaque;
-
- s->eject_request = true;
- if (force) {
- s->tray_locked = false;
- }
-}
-
-static bool scsi_cd_is_tray_open(void *opaque)
-{
- return ((SCSIDiskState *)opaque)->tray_open;
-}
-
-static bool scsi_cd_is_medium_locked(void *opaque)
-{
- return ((SCSIDiskState *)opaque)->tray_locked;
-}
-
-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)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
- if (s->media_changed) {
- s->media_changed = false;
- scsi_device_set_ua(&s->qdev, SENSE_CODE(MEDIUM_CHANGED));
- }
-}
-
-static int scsi_initfn(SCSIDevice *dev)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
-
- if (!s->qdev.conf.bs) {
- error_report("drive property not set");
- return -1;
- }
-
- if (!(s->features & (1 << SCSI_DISK_F_REMOVABLE)) &&
- !bdrv_is_inserted(s->qdev.conf.bs)) {
- error_report("Device needs media, but drive is empty");
- return -1;
- }
-
- blkconf_serial(&s->qdev.conf, &s->serial);
- if (dev->type == TYPE_DISK
- && blkconf_geometry(&dev->conf, NULL, 65535, 255, 255) < 0) {
- return -1;
- }
-
- if (s->qdev.conf.discard_granularity == -1) {
- s->qdev.conf.discard_granularity =
- MAX(s->qdev.conf.logical_block_size, DEFAULT_DISCARD_GRANULARITY);
- }
-
- if (!s->version) {
- s->version = g_strdup(qemu_get_version());
- }
- if (!s->vendor) {
- s->vendor = g_strdup("QEMU");
- }
-
- if (bdrv_is_sg(s->qdev.conf.bs)) {
- error_report("unwanted /dev/sg*");
- return -1;
- }
-
- if (s->features & (1 << SCSI_DISK_F_REMOVABLE)) {
- 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);
-
- bdrv_iostatus_enable(s->qdev.conf.bs);
- add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, NULL);
- return 0;
-}
-
-static int scsi_hd_initfn(SCSIDevice *dev)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
- s->qdev.blocksize = s->qdev.conf.logical_block_size;
- s->qdev.type = TYPE_DISK;
- if (!s->product) {
- s->product = g_strdup("QEMU HARDDISK");
- }
- return scsi_initfn(&s->qdev);
-}
-
-static int scsi_cd_initfn(SCSIDevice *dev)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
- s->qdev.blocksize = 2048;
- s->qdev.type = TYPE_ROM;
- s->features |= 1 << SCSI_DISK_F_REMOVABLE;
- if (!s->product) {
- s->product = g_strdup("QEMU CD-ROM");
- }
- return scsi_initfn(&s->qdev);
-}
-
-static int scsi_disk_initfn(SCSIDevice *dev)
-{
- DriveInfo *dinfo;
-
- if (!dev->conf.bs) {
- return scsi_initfn(dev); /* ... and die there */
- }
-
- dinfo = drive_get_by_blockdev(dev->conf.bs);
- if (dinfo->media_cd) {
- return scsi_cd_initfn(dev);
- } else {
- return scsi_hd_initfn(dev);
- }
-}
-
-static const SCSIReqOps scsi_disk_emulate_reqops = {
- .size = sizeof(SCSIDiskReq),
- .free_req = scsi_free_request,
- .send_command = scsi_disk_emulate_command,
- .read_data = scsi_disk_emulate_read_data,
- .write_data = scsi_disk_emulate_write_data,
- .get_buf = scsi_get_buf,
-};
-
-static const SCSIReqOps scsi_disk_dma_reqops = {
- .size = sizeof(SCSIDiskReq),
- .free_req = scsi_free_request,
- .send_command = scsi_disk_dma_command,
- .read_data = scsi_read_data,
- .write_data = scsi_write_data,
- .cancel_io = scsi_cancel_io,
- .get_buf = scsi_get_buf,
- .load_request = scsi_disk_load_request,
- .save_request = scsi_disk_save_request,
-};
-
-static const SCSIReqOps *const scsi_disk_reqops_dispatch[256] = {
- [TEST_UNIT_READY] = &scsi_disk_emulate_reqops,
- [INQUIRY] = &scsi_disk_emulate_reqops,
- [MODE_SENSE] = &scsi_disk_emulate_reqops,
- [MODE_SENSE_10] = &scsi_disk_emulate_reqops,
- [START_STOP] = &scsi_disk_emulate_reqops,
- [ALLOW_MEDIUM_REMOVAL] = &scsi_disk_emulate_reqops,
- [READ_CAPACITY_10] = &scsi_disk_emulate_reqops,
- [READ_TOC] = &scsi_disk_emulate_reqops,
- [READ_DVD_STRUCTURE] = &scsi_disk_emulate_reqops,
- [READ_DISC_INFORMATION] = &scsi_disk_emulate_reqops,
- [GET_CONFIGURATION] = &scsi_disk_emulate_reqops,
- [GET_EVENT_STATUS_NOTIFICATION] = &scsi_disk_emulate_reqops,
- [MECHANISM_STATUS] = &scsi_disk_emulate_reqops,
- [SERVICE_ACTION_IN_16] = &scsi_disk_emulate_reqops,
- [REQUEST_SENSE] = &scsi_disk_emulate_reqops,
- [SYNCHRONIZE_CACHE] = &scsi_disk_emulate_reqops,
- [SEEK_10] = &scsi_disk_emulate_reqops,
- [MODE_SELECT] = &scsi_disk_emulate_reqops,
- [MODE_SELECT_10] = &scsi_disk_emulate_reqops,
- [UNMAP] = &scsi_disk_emulate_reqops,
- [WRITE_SAME_10] = &scsi_disk_emulate_reqops,
- [WRITE_SAME_16] = &scsi_disk_emulate_reqops,
-
- [READ_6] = &scsi_disk_dma_reqops,
- [READ_10] = &scsi_disk_dma_reqops,
- [READ_12] = &scsi_disk_dma_reqops,
- [READ_16] = &scsi_disk_dma_reqops,
- [VERIFY_10] = &scsi_disk_dma_reqops,
- [VERIFY_12] = &scsi_disk_dma_reqops,
- [VERIFY_16] = &scsi_disk_dma_reqops,
- [WRITE_6] = &scsi_disk_dma_reqops,
- [WRITE_10] = &scsi_disk_dma_reqops,
- [WRITE_12] = &scsi_disk_dma_reqops,
- [WRITE_16] = &scsi_disk_dma_reqops,
- [WRITE_VERIFY_10] = &scsi_disk_dma_reqops,
- [WRITE_VERIFY_12] = &scsi_disk_dma_reqops,
- [WRITE_VERIFY_16] = &scsi_disk_dma_reqops,
-};
-
-static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
- uint8_t *buf, void *hba_private)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
- SCSIRequest *req;
- 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, tag, buf[0]);
- {
- int i;
- for (i = 1; i < req->cmd.len; i++) {
- printf(" 0x%02x", buf[i]);
- }
- printf("\n");
- }
-#endif
-
- return req;
-}
-
-#ifdef __linux__
-static int get_device_type(SCSIDiskState *s)
-{
- BlockDriverState *bdrv = s->qdev.conf.bs;
- uint8_t cmd[16];
- uint8_t buf[36];
- uint8_t sensebuf[8];
- sg_io_hdr_t io_header;
- int ret;
-
- memset(cmd, 0, sizeof(cmd));
- memset(buf, 0, sizeof(buf));
- cmd[0] = INQUIRY;
- cmd[4] = sizeof(buf);
-
- memset(&io_header, 0, sizeof(io_header));
- io_header.interface_id = 'S';
- io_header.dxfer_direction = SG_DXFER_FROM_DEV;
- io_header.dxfer_len = sizeof(buf);
- io_header.dxferp = buf;
- io_header.cmdp = cmd;
- io_header.cmd_len = sizeof(cmd);
- io_header.mx_sb_len = sizeof(sensebuf);
- io_header.sbp = sensebuf;
- io_header.timeout = 6000; /* XXX */
-
- ret = bdrv_ioctl(bdrv, SG_IO, &io_header);
- if (ret < 0 || io_header.driver_status || io_header.host_status) {
- return -1;
- }
- s->qdev.type = buf[0];
- if (buf[1] & 0x80) {
- s->features |= 1 << SCSI_DISK_F_REMOVABLE;
- }
- return 0;
-}
-
-static int scsi_block_initfn(SCSIDevice *dev)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
- int sg_version;
- int rc;
-
- if (!s->qdev.conf.bs) {
- error_report("scsi-block: drive property not set");
- return -1;
- }
-
- /* check we are using a driver managing SG_IO (version 3 and after) */
- if (bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0 ||
- sg_version < 30000) {
- error_report("scsi-block: scsi generic interface too old");
- return -1;
- }
-
- /* get device type from INQUIRY data */
- rc = get_device_type(s);
- if (rc < 0) {
- error_report("scsi-block: INQUIRY failed");
- return -1;
- }
-
- /* Make a guess for the block size, we'll fix it when the guest sends.
- * READ CAPACITY. If they don't, they likely would assume these sizes
- * anyway. (TODO: check in /sys).
- */
- if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM) {
- s->qdev.blocksize = 2048;
- } else {
- s->qdev.blocksize = 512;
- }
- return scsi_initfn(&s->qdev);
-}
-
-static SCSIRequest *scsi_block_new_request(SCSIDevice *d, uint32_t tag,
- uint32_t lun, uint8_t *buf,
- void *hba_private)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
-
- switch (buf[0]) {
- case READ_6:
- case READ_10:
- case READ_12:
- case READ_16:
- case VERIFY_10:
- case VERIFY_12:
- case VERIFY_16:
- case WRITE_6:
- case WRITE_10:
- case WRITE_12:
- case WRITE_16:
- case WRITE_VERIFY_10:
- case WRITE_VERIFY_12:
- case WRITE_VERIFY_16:
- /* If we are not using O_DIRECT, we might read stale data from the
- * host cache if writes were made using other commands than these
- * ones (such as WRITE SAME or EXTENDED COPY, etc.). So, without
- * O_DIRECT everything must go through SG_IO.
- */
- if (bdrv_get_flags(s->qdev.conf.bs) & BDRV_O_NOCACHE) {
- break;
- }
-
- /* MMC writing cannot be done via pread/pwrite, because it sometimes
- * involves writing beyond the maximum LBA or to negative LBA (lead-in).
- * And once you do these writes, reading from the block device is
- * unreliable, too. It is even possible that reads deliver random data
- * from the host page cache (this is probably a Linux bug).
- *
- * We might use scsi_disk_dma_reqops as long as no writing commands are
- * seen, but performance usually isn't paramount on optical media. So,
- * just make scsi-block operate the same as scsi-generic for them.
- */
- if (s->qdev.type != TYPE_ROM) {
- return scsi_req_alloc(&scsi_disk_dma_reqops, &s->qdev, tag, lun,
- hba_private);
- }
- }
-
- return scsi_req_alloc(&scsi_generic_req_ops, &s->qdev, tag, lun,
- hba_private);
-}
-#endif
-
-#define DEFINE_SCSI_DISK_PROPERTIES() \
- DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \
- DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
- DEFINE_PROP_STRING("serial", SCSIDiskState, serial), \
- DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor), \
- DEFINE_PROP_STRING("product", SCSIDiskState, product)
-
-static Property scsi_hd_properties[] = {
- DEFINE_SCSI_DISK_PROPERTIES(),
- DEFINE_PROP_BIT("removable", SCSIDiskState, features,
- SCSI_DISK_F_REMOVABLE, false),
- DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
- SCSI_DISK_F_DPOFUA, false),
- DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0),
- DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState, qdev.conf),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static const VMStateDescription vmstate_scsi_disk_state = {
- .name = "scsi-disk",
- .version_id = 1,
- .minimum_version_id = 1,
- .minimum_version_id_old = 1,
- .fields = (VMStateField[]) {
- VMSTATE_SCSI_DEVICE(qdev, SCSIDiskState),
- VMSTATE_BOOL(media_changed, SCSIDiskState),
- VMSTATE_BOOL(media_event, SCSIDiskState),
- VMSTATE_BOOL(eject_request, SCSIDiskState),
- VMSTATE_BOOL(tray_open, SCSIDiskState),
- VMSTATE_BOOL(tray_locked, SCSIDiskState),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static void scsi_hd_class_initfn(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
-
- sc->init = scsi_hd_initfn;
- sc->destroy = scsi_destroy;
- sc->alloc_req = scsi_new_request;
- sc->unit_attention_reported = scsi_disk_unit_attention_reported;
- dc->fw_name = "disk";
- dc->desc = "virtual SCSI disk";
- dc->reset = scsi_disk_reset;
- dc->props = scsi_hd_properties;
- dc->vmsd = &vmstate_scsi_disk_state;
-}
-
-static const TypeInfo scsi_hd_info = {
- .name = "scsi-hd",
- .parent = TYPE_SCSI_DEVICE,
- .instance_size = sizeof(SCSIDiskState),
- .class_init = scsi_hd_class_initfn,
-};
-
-static Property scsi_cd_properties[] = {
- DEFINE_SCSI_DISK_PROPERTIES(),
- DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void scsi_cd_class_initfn(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
-
- sc->init = scsi_cd_initfn;
- sc->destroy = scsi_destroy;
- sc->alloc_req = scsi_new_request;
- sc->unit_attention_reported = scsi_disk_unit_attention_reported;
- dc->fw_name = "disk";
- dc->desc = "virtual SCSI CD-ROM";
- dc->reset = scsi_disk_reset;
- dc->props = scsi_cd_properties;
- dc->vmsd = &vmstate_scsi_disk_state;
-}
-
-static const TypeInfo scsi_cd_info = {
- .name = "scsi-cd",
- .parent = TYPE_SCSI_DEVICE,
- .instance_size = sizeof(SCSIDiskState),
- .class_init = scsi_cd_class_initfn,
-};
-
-#ifdef __linux__
-static Property scsi_block_properties[] = {
- DEFINE_PROP_DRIVE("drive", SCSIDiskState, qdev.conf.bs),
- DEFINE_PROP_INT32("bootindex", SCSIDiskState, qdev.conf.bootindex, -1),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void scsi_block_class_initfn(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
-
- sc->init = scsi_block_initfn;
- sc->destroy = scsi_destroy;
- sc->alloc_req = scsi_block_new_request;
- dc->fw_name = "disk";
- dc->desc = "SCSI block device passthrough";
- dc->reset = scsi_disk_reset;
- dc->props = scsi_block_properties;
- dc->vmsd = &vmstate_scsi_disk_state;
-}
-
-static const TypeInfo scsi_block_info = {
- .name = "scsi-block",
- .parent = TYPE_SCSI_DEVICE,
- .instance_size = sizeof(SCSIDiskState),
- .class_init = scsi_block_class_initfn,
-};
-#endif
-
-static Property scsi_disk_properties[] = {
- DEFINE_SCSI_DISK_PROPERTIES(),
- DEFINE_PROP_BIT("removable", SCSIDiskState, features,
- SCSI_DISK_F_REMOVABLE, false),
- DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
- SCSI_DISK_F_DPOFUA, false),
- DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void scsi_disk_class_initfn(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
-
- sc->init = scsi_disk_initfn;
- sc->destroy = scsi_destroy;
- sc->alloc_req = scsi_new_request;
- sc->unit_attention_reported = scsi_disk_unit_attention_reported;
- dc->fw_name = "disk";
- dc->desc = "virtual SCSI disk or CD-ROM (legacy)";
- dc->reset = scsi_disk_reset;
- dc->props = scsi_disk_properties;
- dc->vmsd = &vmstate_scsi_disk_state;
-}
-
-static const TypeInfo scsi_disk_info = {
- .name = "scsi-disk",
- .parent = TYPE_SCSI_DEVICE,
- .instance_size = sizeof(SCSIDiskState),
- .class_init = scsi_disk_class_initfn,
-};
-
-static void scsi_disk_register_types(void)
-{
- type_register_static(&scsi_hd_info);
- type_register_static(&scsi_cd_info);
-#ifdef __linux__
- type_register_static(&scsi_block_info);
-#endif
- type_register_static(&scsi_disk_info);
-}
-
-type_init(scsi_disk_register_types)
generated by cgit v1.1 at 2024-12-25 19:26:32 +0000