This patch provides the use of SCSI disks in HVM domains. Currently
there is a maximum of 7 scsi disks and an ide disk must still be used to
boot.
Signed-off-by: Natasha Jarymowycz <natasha@xxxxxxxxxx>
diff -ruN xen-unstable.hg/tools/ioemu/hw/pc.c patched/tools/ioemu/hw/pc.c
--- xen-unstable.hg/tools/ioemu/hw/pc.c 2007-03-13 09:41:39.000000000 -0500
+++ patched/tools/ioemu/hw/pc.c 2007-03-14 09:21:15.000000000 -0500
@@ -902,7 +902,6 @@
if (pci_enabled && acpi_enabled) {
piix4_pm_init(pci_bus, piix3_devfn + 3);
}
-#endif /* !CONFIG_DM */
#if 0
/* ??? Need to figure out some way for the user to
@@ -921,6 +920,17 @@
lsi_scsi_attach(scsi, bdrv, -1);
}
#endif
+#else
+ if (pci_enabled) {
+ void *scsi;
+
+ scsi = lsi_scsi_init(pci_bus, -1);
+ for (i = 0; i < MAX_SCSI_DISKS ; i++) {
+ if (bs_table[i + MAX_DISKS])
+ lsi_scsi_attach(scsi, bs_table[i + MAX_DISKS], -1);
+ }
+ }
+#endif /* !CONFIG_DM */
/* must be done after all PCI devices are instanciated */
/* XXX: should be done in the Bochs BIOS */
if (pci_enabled) {
diff -ruN xen-unstable.hg/tools/ioemu/vl.c patched/tools/ioemu/vl.c
--- xen-unstable.hg/tools/ioemu/vl.c 2007-03-14 08:57:56.000000000 -0500
+++ patched/tools/ioemu/vl.c 2007-03-14 09:21:15.000000000 -0500
@@ -115,7 +115,7 @@
void *ioport_opaque[MAX_IOPORTS];
IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
-BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
+BlockDriverState *bs_table[MAX_DISKS+MAX_SCSI_DISKS], *fd_table[MAX_FD];
int vga_ram_size;
int bios_size;
static DisplayState display_state;
diff -ruN xen-unstable.hg/tools/ioemu/vl.h patched/tools/ioemu/vl.h
--- xen-unstable.hg/tools/ioemu/vl.h 2007-03-13 09:41:39.000000000 -0500
+++ patched/tools/ioemu/vl.h 2007-03-14 09:21:15.000000000 -0500
@@ -833,8 +833,9 @@
/* ide.c */
#define MAX_DISKS 4
+#define MAX_SCSI_DISKS 7
-extern BlockDriverState *bs_table[MAX_DISKS];
+extern BlockDriverState *bs_table[MAX_DISKS+MAX_SCSI_DISKS];
void isa_ide_init(int iobase, int iobase2, int irq,
BlockDriverState *hd0, BlockDriverState *hd1);
diff -ruN xen-unstable.hg/tools/ioemu/xenstore.c patched/tools/ioemu/xenstore.c
--- xen-unstable.hg/tools/ioemu/xenstore.c 2007-03-13 09:41:39.000000000
-0500
+++ patched/tools/ioemu/xenstore.c 2007-03-14 09:28:54.000000000 -0500
@@ -13,7 +13,7 @@
#include <unistd.h>
static struct xs_handle *xsh = NULL;
-static char *hd_filename[MAX_DISKS];
+static char *hd_filename[MAX_DISKS], *sd_filename[MAX_SCSI_DISKS];
static QEMUTimer *insert_timer = NULL;
#define UWAIT_MAX (30*1000000) /* thirty seconds */
@@ -78,12 +78,15 @@
char *buf = NULL, *path;
char *fpath = NULL, *bpath = NULL,
*dev = NULL, *params = NULL, *type = NULL;
- int i;
+ int i, is_scsi;
unsigned int len, num, hd_index;
for(i = 0; i < MAX_DISKS; i++)
hd_filename[i] = NULL;
+ for(i = 0; i < MAX_SCSI_DISKS; i++)
+ sd_filename[i] = NULL;
+
xsh = xs_daemon_open();
if (xsh == NULL) {
fprintf(logfile, "Could not contact xenstore for domain config\n");
@@ -118,10 +121,15 @@
dev = xs_read(xsh, XBT_NULL, buf, &len);
if (dev == NULL)
continue;
- if (strncmp(dev, "hd", 2) || strlen(dev) != 3)
+ if (strncmp(dev, "sd", 2))
+ is_scsi = 0;
+ else
+ is_scsi = 1;
+ if ((strncmp(dev, "hd", 2) && (is_scsi == 0)) || strlen(dev) != 3 )
continue;
hd_index = dev[2] - 'a';
- if (hd_index >= MAX_DISKS)
+ if ((hd_index >= MAX_DISKS && (is_scsi == 0)) ||
+ (hd_index >= MAX_SCSI_DISKS && (is_scsi == 1)))
continue;
/* read the type of the device */
if (pasprintf(&buf, "%s/device/vbd/%s/device-type", path, e[i]) == -1)
@@ -137,10 +145,16 @@
params = xs_read(xsh, XBT_NULL, buf, &len);
if (params == NULL)
continue;
- if (params[0]) {
+ if (params[0] && (is_scsi == 0)) {
hd_filename[hd_index] = params; /* strdup() */
params = NULL; /* don't free params on re-use */
}
+ else {
+ if (params[0] && (is_scsi == 1)) {
+ sd_filename[hd_index] = params; /* strdup() */
+ params = NULL; /* don't free params on re-use */
+ }
+ }
/*
* check if device has a phantom vbd; the phantom is hooked
* to the frontend device (for ease of cleanup), so lookup
@@ -155,7 +169,7 @@
if (pasprintf(&buf, "%s/dev", fpath) == -1)
continue;
params = xs_read(xsh, XBT_NULL, buf , &len);
- if (params != NULL) {
+ if ((params != NULL) && (is_scsi == 0)) {
free(hd_filename[hd_index]);
hd_filename[hd_index] = params;
params = NULL; /* don't free params on re-use */
@@ -165,8 +179,23 @@
*/
waitForDevice(hd_filename[hd_index]);
}
+ else {
+ if ((params != NULL) && (is_scsi == 1)) {
+ free(sd_filename[hd_index]);
+ sd_filename[hd_index] = params;
+ params = NULL; /* don't free params on re-use */
+ /*
+ * wait for device, on timeout silently fail because
+ * we will fail to open below
+ */
+ waitForDevice(sd_filename[hd_index]);
+ }
+ }
}
- bs_table[hd_index] = bdrv_new(dev);
+ if (is_scsi == 0)
+ bs_table[hd_index] = bdrv_new(dev);
+ else
+ bs_table[hd_index + MAX_DISKS] = bdrv_new(dev);
/* re-establish buf */
if (pasprintf(&buf, "%s/params", bpath) == -1)
continue;
@@ -175,12 +204,20 @@
bdrv_set_type_hint(bs_table[hd_index], BDRV_TYPE_CDROM);
xs_watch(xsh, buf, dev);
}
- if (hd_filename[hd_index]) {
+ if ((is_scsi == 0) && hd_filename[hd_index]) {
if (bdrv_open(bs_table[hd_index], hd_filename[hd_index],
0 /* snapshot */) < 0)
fprintf(stderr, "qemu: could not open hard disk image '%s'\n",
hd_filename[hd_index]);
}
+ else {
+ if ((is_scsi == 1) && sd_filename[hd_index]) {
+ if (bdrv_open(bs_table[hd_index+MAX_DISKS],
+ sd_filename[hd_index], 0 /* snapshot */) < 0)
+ fprintf(stderr, "qemu: could not open hard disk image "
+ "'%s'\n", sd_filename[hd_index]);
+ }
+ }
}
out:
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