sparc64: Oracle DAX infrastructure
This patch adds hypercall function stubs and C templates for ccb_submit/info/kill which provide coprocessor services for the Oracle Data Analytics Accelerator, registration for the DAX api group, and all the various associated constants. Signed-off-by: Rob Gardner <rob.gardner@oracle.com> Signed-off-by: Jonathan Helman <jonathan.helman@oracle.com> Signed-off-by: Sanath Kumar <sanath099@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rob Gardner
David S. Miller
parent
0d665e7b10
commit
c2b5934ff5
3 changed files with 196 additions and 0 deletions
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@ -76,6 +76,10 @@
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#define HV_ETOOMANY 15 /* Too many items specified */
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#define HV_ECHANNEL 16 /* Invalid LDC channel */
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#define HV_EBUSY 17 /* Resource busy */
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#define HV_EUNAVAILABLE 23 /* Resource or operation not
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* currently available, but may
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* become available in the future
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*/
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/* mach_exit()
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* TRAP: HV_FAST_TRAP
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@ -941,6 +945,139 @@ unsigned long sun4v_mmu_map_perm_addr(unsigned long vaddr,
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*/
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#define HV_FAST_MEM_SYNC 0x32
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/* Coprocessor services
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*
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* M7 and later processors provide an on-chip coprocessor which
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* accelerates database operations, and is known internally as
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* DAX.
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*/
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/* ccb_submit()
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* TRAP: HV_FAST_TRAP
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* FUNCTION: HV_CCB_SUBMIT
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* ARG0: address of CCB array
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* ARG1: size (in bytes) of CCB array being submitted
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* ARG2: flags
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* ARG3: reserved
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* RET0: status (success or error code)
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* RET1: size (in bytes) of CCB array that was accepted (might be less
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* than arg1)
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* RET2: status data
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* if status == ENOMAP or ENOACCESS, identifies the VA in question
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* if status == EUNAVAILBLE, unavailable code
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* RET3: reserved
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*
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* ERRORS: EOK successful submission (check size)
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* EWOULDBLOCK could not finish submissions, try again
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* EBADALIGN array not 64B aligned or size not 64B multiple
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* ENORADDR invalid RA for array or in CCB
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* ENOMAP could not translate address (see status data)
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* EINVAL invalid ccb or arguments
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* ETOOMANY too many ccbs with all-or-nothing flag
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* ENOACCESS guest has no access to submit ccbs or address
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* in CCB does not have correct permissions (check
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* status data)
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* EUNAVAILABLE ccb operation could not be performed at this
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* time (check status data)
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* Status data codes:
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* 0 - exact CCB could not be executed
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* 1 - CCB opcode cannot be executed
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* 2 - CCB version cannot be executed
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* 3 - vcpu cannot execute CCBs
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* 4 - no CCBs can be executed
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*/
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#define HV_CCB_SUBMIT 0x34
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#ifndef __ASSEMBLY__
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unsigned long sun4v_ccb_submit(unsigned long ccb_buf,
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unsigned long len,
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unsigned long flags,
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unsigned long reserved,
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void *submitted_len,
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void *status_data);
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#endif
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/* flags (ARG2) */
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#define HV_CCB_QUERY_CMD BIT(1)
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#define HV_CCB_ARG0_TYPE_REAL 0UL
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#define HV_CCB_ARG0_TYPE_PRIMARY BIT(4)
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#define HV_CCB_ARG0_TYPE_SECONDARY BIT(5)
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#define HV_CCB_ARG0_TYPE_NUCLEUS GENMASK(5, 4)
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#define HV_CCB_ARG0_PRIVILEGED BIT(6)
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#define HV_CCB_ALL_OR_NOTHING BIT(7)
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#define HV_CCB_QUEUE_INFO BIT(8)
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#define HV_CCB_VA_REJECT 0UL
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#define HV_CCB_VA_SECONDARY BIT(13)
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#define HV_CCB_VA_NUCLEUS GENMASK(13, 12)
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#define HV_CCB_VA_PRIVILEGED BIT(14)
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#define HV_CCB_VA_READ_ADI_DISABLE BIT(15) /* DAX2 only */
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/* ccb_info()
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* TRAP: HV_FAST_TRAP
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* FUNCTION: HV_CCB_INFO
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* ARG0: real address of CCB completion area
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* RET0: status (success or error code)
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* RET1: info array
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* - RET1[0]: CCB state
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* - RET1[1]: dax unit
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* - RET1[2]: queue number
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* - RET1[3]: queue position
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*
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* ERRORS: EOK operation successful
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* EBADALIGN address not 64B aligned
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* ENORADDR RA in address not valid
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* EINVAL CA not valid
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* EWOULDBLOCK info not available for this CCB currently, try
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* again
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* ENOACCESS guest cannot use dax
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*/
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#define HV_CCB_INFO 0x35
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#ifndef __ASSEMBLY__
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unsigned long sun4v_ccb_info(unsigned long ca,
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void *info_arr);
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#endif
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/* info array byte offsets (RET1) */
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#define CCB_INFO_OFFSET_CCB_STATE 0
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#define CCB_INFO_OFFSET_DAX_UNIT 2
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#define CCB_INFO_OFFSET_QUEUE_NUM 4
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#define CCB_INFO_OFFSET_QUEUE_POS 6
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/* CCB state (RET1[0]) */
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#define HV_CCB_STATE_COMPLETED 0
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#define HV_CCB_STATE_ENQUEUED 1
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#define HV_CCB_STATE_INPROGRESS 2
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#define HV_CCB_STATE_NOTFOUND 3
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/* ccb_kill()
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* TRAP: HV_FAST_TRAP
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* FUNCTION: HV_CCB_KILL
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* ARG0: real address of CCB completion area
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* RET0: status (success or error code)
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* RET1: CCB kill status
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*
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* ERRORS: EOK operation successful
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* EBADALIGN address not 64B aligned
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* ENORADDR RA in address not valid
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* EINVAL CA not valid
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* EWOULDBLOCK kill not available for this CCB currently, try
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* again
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* ENOACCESS guest cannot use dax
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*/
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#define HV_CCB_KILL 0x36
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#ifndef __ASSEMBLY__
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unsigned long sun4v_ccb_kill(unsigned long ca,
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void *kill_status);
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#endif
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/* CCB kill status (RET1) */
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#define HV_CCB_KILL_COMPLETED 0
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#define HV_CCB_KILL_DEQUEUED 1
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#define HV_CCB_KILL_KILLED 2
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#define HV_CCB_KILL_NOTFOUND 3
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/* Time of day services.
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*
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* The hypervisor maintains the time of day on a per-domain basis.
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@ -3355,6 +3492,7 @@ unsigned long sun4v_m7_set_perfreg(unsigned long reg_num,
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#define HV_GRP_SDIO_ERR 0x0109
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#define HV_GRP_REBOOT_DATA 0x0110
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#define HV_GRP_ATU 0x0111
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#define HV_GRP_DAX 0x0113
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#define HV_GRP_M7_PERF 0x0114
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#define HV_GRP_NIAG_PERF 0x0200
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#define HV_GRP_FIRE_PERF 0x0201
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@ -41,6 +41,7 @@ static struct api_info api_table[] = {
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{ .group = HV_GRP_SDIO_ERR, },
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{ .group = HV_GRP_REBOOT_DATA, },
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{ .group = HV_GRP_ATU, .flags = FLAG_PRE_API },
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{ .group = HV_GRP_DAX, },
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{ .group = HV_GRP_NIAG_PERF, .flags = FLAG_PRE_API },
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{ .group = HV_GRP_FIRE_PERF, },
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{ .group = HV_GRP_N2_CPU, },
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@ -871,3 +871,60 @@ ENTRY(sun4v_m7_set_perfreg)
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retl
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nop
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ENDPROC(sun4v_m7_set_perfreg)
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/* %o0: address of CCB array
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* %o1: size (in bytes) of CCB array
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* %o2: flags
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* %o3: reserved
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*
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* returns:
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* %o0: status
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* %o1: size (in bytes) of the CCB array that was accepted
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* %o2: status data
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* %o3: reserved
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*/
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ENTRY(sun4v_ccb_submit)
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mov %o5, %g1
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mov HV_CCB_SUBMIT, %o5
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ta HV_FAST_TRAP
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stx %o1, [%o4]
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retl
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stx %o2, [%g1]
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ENDPROC(sun4v_ccb_submit)
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EXPORT_SYMBOL(sun4v_ccb_submit)
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/* %o0: completion area ra for the ccb to get info
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*
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* returns:
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* %o0: status
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* %o1: CCB state
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* %o2: position
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* %o3: dax unit
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* %o4: queue
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*/
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ENTRY(sun4v_ccb_info)
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mov %o1, %g1
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mov HV_CCB_INFO, %o5
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ta HV_FAST_TRAP
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sth %o1, [%g1 + CCB_INFO_OFFSET_CCB_STATE]
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sth %o2, [%g1 + CCB_INFO_OFFSET_QUEUE_POS]
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sth %o3, [%g1 + CCB_INFO_OFFSET_DAX_UNIT]
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retl
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sth %o4, [%g1 + CCB_INFO_OFFSET_QUEUE_NUM]
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ENDPROC(sun4v_ccb_info)
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EXPORT_SYMBOL(sun4v_ccb_info)
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/* %o0: completion area ra for the ccb to kill
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*
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* returns:
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* %o0: status
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* %o1: result of the kill
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*/
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ENTRY(sun4v_ccb_kill)
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mov %o1, %g1
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mov HV_CCB_KILL, %o5
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ta HV_FAST_TRAP
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retl
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sth %o1, [%g1]
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ENDPROC(sun4v_ccb_kill)
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EXPORT_SYMBOL(sun4v_ccb_kill)
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