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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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aebfa669d9
Let the bus code process scm availability information and notify scm device drivers about the new state. Reviewed-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
129 lines
2.2 KiB
C
129 lines
2.2 KiB
C
#ifndef _ASM_S390_EADM_H
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#define _ASM_S390_EADM_H
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#include <linux/types.h>
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#include <linux/device.h>
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struct arqb {
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u64 data;
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u16 fmt:4;
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u16:12;
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u16 cmd_code;
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u16:16;
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u16 msb_count;
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u32 reserved[12];
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} __packed;
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#define ARQB_CMD_MOVE 1
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struct arsb {
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u16 fmt:4;
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u32:28;
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u8 ef;
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u8:8;
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u8 ecbi;
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u8:8;
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u8 fvf;
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u16:16;
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u8 eqc;
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u32:32;
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u64 fail_msb;
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u64 fail_aidaw;
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u64 fail_ms;
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u64 fail_scm;
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u32 reserved[4];
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} __packed;
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#define EQC_WR_PROHIBIT 22
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struct msb {
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u8 fmt:4;
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u8 oc:4;
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u8 flags;
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u16:12;
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u16 bs:4;
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u32 blk_count;
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u64 data_addr;
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u64 scm_addr;
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u64:64;
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} __packed;
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struct aidaw {
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u8 flags;
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u32 :24;
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u32 :32;
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u64 data_addr;
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} __packed;
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#define MSB_OC_CLEAR 0
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#define MSB_OC_READ 1
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#define MSB_OC_WRITE 2
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#define MSB_OC_RELEASE 3
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#define MSB_FLAG_BNM 0x80
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#define MSB_FLAG_IDA 0x40
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#define MSB_BS_4K 0
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#define MSB_BS_1M 1
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#define AOB_NR_MSB 124
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struct aob {
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struct arqb request;
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struct arsb response;
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struct msb msb[AOB_NR_MSB];
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} __packed __aligned(PAGE_SIZE);
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struct aob_rq_header {
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struct scm_device *scmdev;
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char data[0];
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};
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struct scm_device {
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u64 address;
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u64 size;
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unsigned int nr_max_block;
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struct device dev;
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struct {
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unsigned int persistence:4;
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unsigned int oper_state:4;
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unsigned int data_state:4;
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unsigned int rank:4;
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unsigned int release:1;
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unsigned int res_id:8;
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} __packed attrs;
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};
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#define OP_STATE_GOOD 1
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#define OP_STATE_TEMP_ERR 2
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#define OP_STATE_PERM_ERR 3
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enum scm_event {SCM_CHANGE, SCM_AVAIL};
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struct scm_driver {
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struct device_driver drv;
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int (*probe) (struct scm_device *scmdev);
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int (*remove) (struct scm_device *scmdev);
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void (*notify) (struct scm_device *scmdev, enum scm_event event);
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void (*handler) (struct scm_device *scmdev, void *data, int error);
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};
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int scm_driver_register(struct scm_driver *scmdrv);
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void scm_driver_unregister(struct scm_driver *scmdrv);
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int scm_start_aob(struct aob *aob);
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void scm_irq_handler(struct aob *aob, int error);
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struct eadm_ops {
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int (*eadm_start) (struct aob *aob);
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struct module *owner;
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};
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int scm_get_ref(void);
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void scm_put_ref(void);
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void register_eadm_ops(struct eadm_ops *ops);
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void unregister_eadm_ops(struct eadm_ops *ops);
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#endif /* _ASM_S390_EADM_H */
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