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pc-bios/s390-ccw: Split virtio-scsi code from virtio_blk_setup_device()

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The next patch is going to add more virtio-block specific code to
virtio_blk_setup_device(), and if the virtio-scsi code is also in
there, this is more cumbersome. And the calling function virtio_setup()
in main.c looks at the device type already anyway, so it's more
logical to separate the virtio-scsi stuff into a new function in
virtio-scsi.c instead.

Message-Id: <20220704111903.62400-10-thuth@redhat.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Thomas Huth 2022-07-04 13:19:00 +02:00
parent 0708248857
commit cf30b7c4a9
4 changed files with 38 additions and 27 deletions
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24
pc-bios/s390-ccw/main.c
View file

@ -14,6 +14,7 @@
#include "s390-ccw.h"
#include "cio.h"
#include "virtio.h"
#include "virtio-scsi.h"
#include "dasd-ipl.h"
char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
@ -218,6 +219,7 @@ static int virtio_setup(void)
{
VDev *vdev = virtio_get_device();
QemuIplParameters *early_qipl = (QemuIplParameters *)QIPL_ADDRESS;
int ret;
memcpy(&qipl, early_qipl, sizeof(QemuIplParameters));
@ -225,18 +227,26 @@ static int virtio_setup(void)
menu_setup();
}
if (virtio_get_device_type() == VIRTIO_ID_NET) {
switch (vdev->senseid.cu_model) {
case VIRTIO_ID_NET:
sclp_print("Network boot device detected\n");
vdev->netboot_start_addr = qipl.netboot_start_addr;
} else {
int ret = virtio_blk_setup_device(blk_schid);
if (ret) {
return ret;
}
return 0;
case VIRTIO_ID_BLOCK:
ret = virtio_blk_setup_device(blk_schid);
break;
case VIRTIO_ID_SCSI:
ret = virtio_scsi_setup_device(blk_schid);
break;
default:
panic("\n! No IPL device available !\n");
}
if (!ret) {
IPL_assert(virtio_ipl_disk_is_valid(), "No valid IPL device detected");
}
return 0;
return ret;
}
static void ipl_boot_device(void)

20
pc-bios/s390-ccw/virtio-blkdev.c
View file

@ -222,27 +222,11 @@ uint64_t virtio_get_blocks(void)
int virtio_blk_setup_device(SubChannelId schid)
{
VDev *vdev = virtio_get_device();
int ret = 0;
vdev->schid = schid;
virtio_setup_ccw(vdev);
switch (vdev->senseid.cu_model) {
case VIRTIO_ID_BLOCK:
sclp_print("Using virtio-blk.\n");
break;
case VIRTIO_ID_SCSI:
IPL_assert(vdev->config.scsi.sense_size == VIRTIO_SCSI_SENSE_SIZE,
"Config: sense size mismatch");
IPL_assert(vdev->config.scsi.cdb_size == VIRTIO_SCSI_CDB_SIZE,
"Config: CDB size mismatch");
sclp_print("Using virtio-blk.\n");
sclp_print("Using virtio-scsi.\n");
ret = virtio_scsi_setup(vdev);
break;
default:
panic("\n! No IPL device available !\n");
}
return ret;
return 0;
}

19
pc-bios/s390-ccw/virtio-scsi.c
View file

@ -329,7 +329,7 @@ static void scsi_parse_capacity_report(void *data,
}
}
int virtio_scsi_setup(VDev *vdev)
static int virtio_scsi_setup(VDev *vdev)
{
int retry_test_unit_ready = 3;
uint8_t data[256];
@ -430,3 +430,20 @@ int virtio_scsi_setup(VDev *vdev)
return 0;
}
int virtio_scsi_setup_device(SubChannelId schid)
{
VDev *vdev = virtio_get_device();
vdev->schid = schid;
virtio_setup_ccw(vdev);
IPL_assert(vdev->config.scsi.sense_size == VIRTIO_SCSI_SENSE_SIZE,
"Config: sense size mismatch");
IPL_assert(vdev->config.scsi.cdb_size == VIRTIO_SCSI_CDB_SIZE,
"Config: CDB size mismatch");
sclp_print("Using virtio-scsi.\n");
return virtio_scsi_setup(vdev);
}

2
pc-bios/s390-ccw/virtio-scsi.h
View file

@ -67,8 +67,8 @@ static inline bool virtio_scsi_response_ok(const VirtioScsiCmdResp *r)
return r->response == VIRTIO_SCSI_S_OK && r->status == CDB_STATUS_GOOD;
}
int virtio_scsi_setup(VDev *vdev);
int virtio_scsi_read_many(VDev *vdev,
ulong sector, void *load_addr, int sec_num);
int virtio_scsi_setup_device(SubChannelId schid);
#endif /* VIRTIO_SCSI_H */