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| author | Jason J. Herne | 2019-04-04 16:34:33 +0200 |
|---|---|---|
| committer | Thomas Huth | 2019-04-12 12:40:35 +0200 |
| commit | 69333c36dc85b84b021766747cffc2b53df93ae8 (patch) | |
| tree | 54cf0953e8160ff8a25b9194d2b7a1b5be36ce9f /pc-bios | |
| parent | s390-bios: Use control unit type to determine boot method (diff) | |
| download | qemu-69333c36dc85b84b021766747cffc2b53df93ae8.tar.gz qemu-69333c36dc85b84b021766747cffc2b53df93ae8.tar.xz qemu-69333c36dc85b84b021766747cffc2b53df93ae8.zip | |
s390-bios: Add channel command codes/structs needed for dasd-ipl
The dasd IPL procedure needs to execute a few previously unused
channel commands. Let's define them and their associated data
structures.
Signed-off-by: Jason J. Herne <jjherne@linux.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1554388475-18329-15-git-send-email-jjherne@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'pc-bios')
| -rw-r--r-- | pc-bios/s390-ccw/cio.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/pc-bios/s390-ccw/cio.h b/pc-bios/s390-ccw/cio.h index 1637e32070..aaa432dedd 100644 --- a/pc-bios/s390-ccw/cio.h +++ b/pc-bios/s390-ccw/cio.h @@ -200,11 +200,14 @@ typedef struct ccw1 { #define CCW_FLAG_IDA 0x04 #define CCW_FLAG_SUSPEND 0x02 +/* Common CCW commands */ +#define CCW_CMD_READ_IPL 0x02 #define CCW_CMD_NOOP 0x03 #define CCW_CMD_BASIC_SENSE 0x04 #define CCW_CMD_TIC 0x08 #define CCW_CMD_SENSE_ID 0xe4 +/* Virtio CCW commands */ #define CCW_CMD_SET_VQ 0x13 #define CCW_CMD_VDEV_RESET 0x33 #define CCW_CMD_READ_FEAT 0x12 @@ -216,6 +219,12 @@ typedef struct ccw1 { #define CCW_CMD_SET_CONF_IND 0x53 #define CCW_CMD_READ_VQ_CONF 0x32 +/* DASD CCW commands */ +#define CCW_CMD_DASD_READ 0x06 +#define CCW_CMD_DASD_SEEK 0x07 +#define CCW_CMD_DASD_SEARCH_ID_EQ 0x31 +#define CCW_CMD_DASD_READ_MT 0x86 + /* * Command-mode operation request block */ @@ -333,6 +342,20 @@ typedef struct irb { __u32 emw[8]; } __attribute__ ((packed, aligned(4))) Irb; +/* Used for SEEK ccw commands */ +typedef struct CcwSeekData { + uint16_t reserved; + uint16_t cyl; + uint16_t head; +} __attribute__((packed)) CcwSeekData; + +/* Used for SEARCH ID ccw commands */ +typedef struct CcwSearchIdData { + uint16_t cyl; + uint16_t head; + uint8_t record; +} __attribute__((packed)) CcwSearchIdData; + int enable_mss_facility(void); void enable_subchannel(SubChannelId schid); uint16_t cu_type(SubChannelId schid); |