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author | Anthony Liguori <aliguori@us.ibm.com> | 2013-04-08 13:12:32 -0500 |
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committer | Anthony Liguori <aliguori@us.ibm.com> | 2013-04-08 13:12:33 -0500 |
commit | 47b5264eb3e1cd2825e48d28fd0d1b239ed53974 (patch) | |
tree | 3efa22775b82624df0cb10486ea05526613b9ea6 /include/hw/s390x/sclp.h | |
parent | 1f8010f0790b53e5a75dbbd3e14868759ac00e6c (diff) | |
parent | 47b43a1f414c5b3eb9eb7502d0b0be0d134259ba (diff) | |
download | qemu-47b5264eb3e1cd2825e48d28fd0d1b239ed53974.tar.gz |
Merge remote-tracking branch 'bonzini/hw-dirs' into staging
# By Paolo Bonzini
# Via Paolo Bonzini
* bonzini/hw-dirs: (35 commits)
hw: move private headers to hw/ subdirectories.
MAINTAINERS: update for source code movement
hw: move last file to hw/arm/
hw: move hw/kvm/ to hw/i386/kvm
hw: move ARM CPU cores to hw/cpu/, configure with default-configs/
hw: move other devices to hw/misc/, configure with default-configs/
hw: move NVRAM interfaces to hw/nvram/, configure with default-configs/
hw: move GPIO interfaces to hw/gpio/, configure with default-configs/
hw: move interrupt controllers to hw/intc/, configure with default-configs/
hw: move DMA controllers to hw/dma/, configure with default-configs/
hw: move VFIO and ivshmem to hw/misc/
hw: move PCI bridges to hw/pci-* or hw/ARCH
hw: move SD/MMC devices to hw/sd/, configure with default-configs/
hw: move timer devices to hw/timer/, configure with default-configs/
hw: move ISA bridges and devices to hw/isa/, configure with default-configs/
hw: move char devices to hw/char/, configure via default-configs/
hw: move more files to hw/xen/
hw: move SCSI controllers to hw/scsi/, configure via default-configs/
hw: move SSI controllers to hw/ssi/, configure via default-configs/
hw: move I2C controllers to hw/i2c/, configure via default-configs/
...
Message-id: 1365442249-18259-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'include/hw/s390x/sclp.h')
-rw-r--r-- | include/hw/s390x/sclp.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h new file mode 100644 index 0000000000..231a38aa09 --- /dev/null +++ b/include/hw/s390x/sclp.h @@ -0,0 +1,118 @@ +/* + * SCLP Support + * + * Copyright IBM, Corp. 2012 + * + * Authors: + * Christian Borntraeger <borntraeger@de.ibm.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at your + * option) any later version. See the COPYING file in the top-level directory. + * + */ + +#ifndef HW_S390_SCLP_H +#define HW_S390_SCLP_H + +#include <hw/sysbus.h> +#include <hw/qdev.h> + +/* SCLP command codes */ +#define SCLP_CMDW_READ_SCP_INFO 0x00020001 +#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001 +#define SCLP_CMD_READ_EVENT_DATA 0x00770005 +#define SCLP_CMD_WRITE_EVENT_DATA 0x00760005 +#define SCLP_CMD_READ_EVENT_DATA 0x00770005 +#define SCLP_CMD_WRITE_EVENT_DATA 0x00760005 +#define SCLP_CMD_WRITE_EVENT_MASK 0x00780005 + +/* SCLP response codes */ +#define SCLP_RC_NORMAL_READ_COMPLETION 0x0010 +#define SCLP_RC_NORMAL_COMPLETION 0x0020 +#define SCLP_RC_INVALID_SCLP_COMMAND 0x01f0 +#define SCLP_RC_CONTAINED_EQUIPMENT_CHECK 0x0340 +#define SCLP_RC_INSUFFICIENT_SCCB_LENGTH 0x0300 +#define SCLP_RC_INVALID_FUNCTION 0x40f0 +#define SCLP_RC_NO_EVENT_BUFFERS_STORED 0x60f0 +#define SCLP_RC_INVALID_SELECTION_MASK 0x70f0 +#define SCLP_RC_INCONSISTENT_LENGTHS 0x72f0 +#define SCLP_RC_EVENT_BUFFER_SYNTAX_ERROR 0x73f0 +#define SCLP_RC_INVALID_MASK_LENGTH 0x74f0 + + +/* Service Call Control Block (SCCB) and its elements */ + +#define SCCB_SIZE 4096 + +#define SCLP_VARIABLE_LENGTH_RESPONSE 0x80 +#define SCLP_EVENT_BUFFER_ACCEPTED 0x80 + +#define SCLP_FC_NORMAL_WRITE 0 + +/* + * Normally packed structures are not the right thing to do, since all code + * must take care of endianness. We cannot use ldl_phys and friends for two + * reasons, though: + * - some of the embedded structures below the SCCB can appear multiple times + * at different locations, so there is no fixed offset + * - we work on a private copy of the SCCB, since there are several length + * fields, that would cause a security nightmare if we allow the guest to + * alter the structure while we parse it. We cannot use ldl_p and friends + * either without doing pointer arithmetics + * So we have to double check that all users of sclp data structures use the + * right endianness wrappers. + */ +typedef struct SCCBHeader { + uint16_t length; + uint8_t function_code; + uint8_t control_mask[3]; + uint16_t response_code; +} QEMU_PACKED SCCBHeader; + +#define SCCB_DATA_LEN (SCCB_SIZE - sizeof(SCCBHeader)) + +typedef struct ReadInfo { + SCCBHeader h; + uint16_t rnmax; + uint8_t rnsize; +} QEMU_PACKED ReadInfo; + +typedef struct SCCB { + SCCBHeader h; + char data[SCCB_DATA_LEN]; + } QEMU_PACKED SCCB; + +static inline int sccb_data_len(SCCB *sccb) +{ + return be16_to_cpu(sccb->h.length) - sizeof(sccb->h); +} + +#define TYPE_DEVICE_S390_SCLP "s390-sclp-device" +#define SCLP_S390_DEVICE(obj) \ + OBJECT_CHECK(S390SCLPDevice, (obj), TYPE_DEVICE_S390_SCLP) +#define SCLP_S390_DEVICE_CLASS(klass) \ + OBJECT_CLASS_CHECK(S390SCLPDeviceClass, (klass), \ + TYPE_DEVICE_S390_SCLP) +#define SCLP_S390_DEVICE_GET_CLASS(obj) \ + OBJECT_GET_CLASS(S390SCLPDeviceClass, (obj), \ + TYPE_DEVICE_S390_SCLP) + +typedef struct SCLPEventFacility SCLPEventFacility; + +typedef struct S390SCLPDevice { + SysBusDevice busdev; + SCLPEventFacility *ef; + void (*sclp_command_handler)(SCLPEventFacility *ef, SCCB *sccb, + uint64_t code); + bool (*event_pending)(SCLPEventFacility *ef); +} S390SCLPDevice; + +typedef struct S390SCLPDeviceClass { + DeviceClass qdev; + int (*init)(S390SCLPDevice *sdev); +} S390SCLPDeviceClass; + +void s390_sclp_init(void); +void sclp_service_interrupt(uint32_t sccb); + +#endif |