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sparc64: Oracle DAX infrastructure

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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
2017-12-05 19:40:42 -07:00
committed by David S. Miller
parent 0d665e7b10
commit c2b5934ff5
3 changed files with 196 additions and 0 deletions
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138
arch/sparc/include/asm/hypervisor.h
View File

@@ -76,6 +76,10 @@
#define HV_ETOOMANY 15 /* Too many items specified */ #define HV_ETOOMANY 15 /* Too many items specified */
#define HV_ECHANNEL 16 /* Invalid LDC channel */ #define HV_ECHANNEL 16 /* Invalid LDC channel */
#define HV_EBUSY 17 /* Resource busy */ #define HV_EBUSY 17 /* Resource busy */
#define HV_EUNAVAILABLE 23 /* Resource or operation not
* currently available, but may
* become available in the future
*/
/* mach_exit() /* mach_exit()
* TRAP: HV_FAST_TRAP * TRAP: HV_FAST_TRAP
@@ -941,6 +945,139 @@ unsigned long sun4v_mmu_map_perm_addr(unsigned long vaddr,
*/ */
#define HV_FAST_MEM_SYNC 0x32 #define HV_FAST_MEM_SYNC 0x32
/* Coprocessor services
*
* M7 and later processors provide an on-chip coprocessor which
* accelerates database operations, and is known internally as
* DAX.
*/
/* ccb_submit()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_CCB_SUBMIT
* ARG0: address of CCB array
* ARG1: size (in bytes) of CCB array being submitted
* ARG2: flags
* ARG3: reserved
* RET0: status (success or error code)
* RET1: size (in bytes) of CCB array that was accepted (might be less
* than arg1)
* RET2: status data
* if status == ENOMAP or ENOACCESS, identifies the VA in question
* if status == EUNAVAILBLE, unavailable code
* RET3: reserved
*
* ERRORS: EOK successful submission (check size)
* EWOULDBLOCK could not finish submissions, try again
* EBADALIGN array not 64B aligned or size not 64B multiple
* ENORADDR invalid RA for array or in CCB
* ENOMAP could not translate address (see status data)
* EINVAL invalid ccb or arguments
* ETOOMANY too many ccbs with all-or-nothing flag
* ENOACCESS guest has no access to submit ccbs or address
* in CCB does not have correct permissions (check
* status data)
* EUNAVAILABLE ccb operation could not be performed at this
* time (check status data)
* Status data codes:
* 0 - exact CCB could not be executed
* 1 - CCB opcode cannot be executed
* 2 - CCB version cannot be executed
* 3 - vcpu cannot execute CCBs
* 4 - no CCBs can be executed
*/
#define HV_CCB_SUBMIT 0x34
#ifndef __ASSEMBLY__
unsigned long sun4v_ccb_submit(unsigned long ccb_buf,
unsigned long len,
unsigned long flags,
unsigned long reserved,
void *submitted_len,
void *status_data);
#endif
/* flags (ARG2) */
#define HV_CCB_QUERY_CMD BIT(1)
#define HV_CCB_ARG0_TYPE_REAL 0UL
#define HV_CCB_ARG0_TYPE_PRIMARY BIT(4)
#define HV_CCB_ARG0_TYPE_SECONDARY BIT(5)
#define HV_CCB_ARG0_TYPE_NUCLEUS GENMASK(5, 4)
#define HV_CCB_ARG0_PRIVILEGED BIT(6)
#define HV_CCB_ALL_OR_NOTHING BIT(7)
#define HV_CCB_QUEUE_INFO BIT(8)
#define HV_CCB_VA_REJECT 0UL
#define HV_CCB_VA_SECONDARY BIT(13)
#define HV_CCB_VA_NUCLEUS GENMASK(13, 12)
#define HV_CCB_VA_PRIVILEGED BIT(14)
#define HV_CCB_VA_READ_ADI_DISABLE BIT(15) /* DAX2 only */
/* ccb_info()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_CCB_INFO
* ARG0: real address of CCB completion area
* RET0: status (success or error code)
* RET1: info array
* - RET1[0]: CCB state
* - RET1[1]: dax unit
* - RET1[2]: queue number
* - RET1[3]: queue position
*
* ERRORS: EOK operation successful
* EBADALIGN address not 64B aligned
* ENORADDR RA in address not valid
* EINVAL CA not valid
* EWOULDBLOCK info not available for this CCB currently, try
* again
* ENOACCESS guest cannot use dax
*/
#define HV_CCB_INFO 0x35
#ifndef __ASSEMBLY__
unsigned long sun4v_ccb_info(unsigned long ca,
void *info_arr);
#endif
/* info array byte offsets (RET1) */
#define CCB_INFO_OFFSET_CCB_STATE 0
#define CCB_INFO_OFFSET_DAX_UNIT 2
#define CCB_INFO_OFFSET_QUEUE_NUM 4
#define CCB_INFO_OFFSET_QUEUE_POS 6
/* CCB state (RET1[0]) */
#define HV_CCB_STATE_COMPLETED 0
#define HV_CCB_STATE_ENQUEUED 1
#define HV_CCB_STATE_INPROGRESS 2
#define HV_CCB_STATE_NOTFOUND 3
/* ccb_kill()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_CCB_KILL
* ARG0: real address of CCB completion area
* RET0: status (success or error code)
* RET1: CCB kill status
*
* ERRORS: EOK operation successful
* EBADALIGN address not 64B aligned
* ENORADDR RA in address not valid
* EINVAL CA not valid
* EWOULDBLOCK kill not available for this CCB currently, try
* again
* ENOACCESS guest cannot use dax
*/
#define HV_CCB_KILL 0x36
#ifndef __ASSEMBLY__
unsigned long sun4v_ccb_kill(unsigned long ca,
void *kill_status);
#endif
/* CCB kill status (RET1) */
#define HV_CCB_KILL_COMPLETED 0
#define HV_CCB_KILL_DEQUEUED 1
#define HV_CCB_KILL_KILLED 2
#define HV_CCB_KILL_NOTFOUND 3
/* Time of day services. /* Time of day services.
* *
* The hypervisor maintains the time of day on a per-domain basis. * The hypervisor maintains the time of day on a per-domain basis.
@@ -3355,6 +3492,7 @@ unsigned long sun4v_m7_set_perfreg(unsigned long reg_num,
#define HV_GRP_SDIO_ERR 0x0109 #define HV_GRP_SDIO_ERR 0x0109
#define HV_GRP_REBOOT_DATA 0x0110 #define HV_GRP_REBOOT_DATA 0x0110
#define HV_GRP_ATU 0x0111 #define HV_GRP_ATU 0x0111
#define HV_GRP_DAX 0x0113
#define HV_GRP_M7_PERF 0x0114 #define HV_GRP_M7_PERF 0x0114
#define HV_GRP_NIAG_PERF 0x0200 #define HV_GRP_NIAG_PERF 0x0200
#define HV_GRP_FIRE_PERF 0x0201 #define HV_GRP_FIRE_PERF 0x0201

1
arch/sparc/kernel/hvapi.c
View File

@@ -41,6 +41,7 @@ static struct api_info api_table[] = {
{ .group = HV_GRP_SDIO_ERR, }, { .group = HV_GRP_SDIO_ERR, },
{ .group = HV_GRP_REBOOT_DATA, }, { .group = HV_GRP_REBOOT_DATA, },
{ .group = HV_GRP_ATU, .flags = FLAG_PRE_API }, { .group = HV_GRP_ATU, .flags = FLAG_PRE_API },
{ .group = HV_GRP_DAX, },
{ .group = HV_GRP_NIAG_PERF, .flags = FLAG_PRE_API }, { .group = HV_GRP_NIAG_PERF, .flags = FLAG_PRE_API },
{ .group = HV_GRP_FIRE_PERF, }, { .group = HV_GRP_FIRE_PERF, },
{ .group = HV_GRP_N2_CPU, }, { .group = HV_GRP_N2_CPU, },

57
arch/sparc/kernel/hvcalls.S
View File

@@ -871,3 +871,60 @@ ENTRY(sun4v_m7_set_perfreg)
retl retl
nop nop
ENDPROC(sun4v_m7_set_perfreg) ENDPROC(sun4v_m7_set_perfreg)
/* %o0: address of CCB array
* %o1: size (in bytes) of CCB array
* %o2: flags
* %o3: reserved
*
* returns:
* %o0: status
* %o1: size (in bytes) of the CCB array that was accepted
* %o2: status data
* %o3: reserved
*/
ENTRY(sun4v_ccb_submit)
mov %o5, %g1
mov HV_CCB_SUBMIT, %o5
ta HV_FAST_TRAP
stx %o1, [%o4]
retl
stx %o2, [%g1]
ENDPROC(sun4v_ccb_submit)
EXPORT_SYMBOL(sun4v_ccb_submit)
/* %o0: completion area ra for the ccb to get info
*
* returns:
* %o0: status
* %o1: CCB state
* %o2: position
* %o3: dax unit
* %o4: queue
*/
ENTRY(sun4v_ccb_info)
mov %o1, %g1
mov HV_CCB_INFO, %o5
ta HV_FAST_TRAP
sth %o1, [%g1 + CCB_INFO_OFFSET_CCB_STATE]
sth %o2, [%g1 + CCB_INFO_OFFSET_QUEUE_POS]
sth %o3, [%g1 + CCB_INFO_OFFSET_DAX_UNIT]
retl
sth %o4, [%g1 + CCB_INFO_OFFSET_QUEUE_NUM]
ENDPROC(sun4v_ccb_info)
EXPORT_SYMBOL(sun4v_ccb_info)
/* %o0: completion area ra for the ccb to kill
*
* returns:
* %o0: status
* %o1: result of the kill
*/
ENTRY(sun4v_ccb_kill)
mov %o1, %g1
mov HV_CCB_KILL, %o5
ta HV_FAST_TRAP
retl
sth %o1, [%g1]
ENDPROC(sun4v_ccb_kill)
EXPORT_SYMBOL(sun4v_ccb_kill)