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kernel-ark/include/asm-sparc64/hypervisor.h
David S. Miller 4f0234f4f9 [SPARC64]: Initial LDOM cpu hotplug support. 
Only adding cpus is supports at the moment, removal
will come next.

When new cpus are configured, the machine description is
updated.  When we get the configure request we pass in a
cpu mask of to-be-added cpus to the mdesc CPU node parser
so it only fetches information for those cpus.  That code
also proceeds to update the SMT/multi-core scheduling bitmaps.

cpu_up() does all the work and we return the status back
over the DS channel.

CPUs via dr-cpu need to be booted straight out of the
hypervisor, and this requires:

1) A new trampoline mechanism.  CPUs are booted straight
   out of the hypervisor with MMU disabled and running in
   physical addresses with no mappings installed in the TLB.

   The new hvtramp.S code sets up the critical cpu state,
   installs the locked TLB mappings for the kernel, and
   turns the MMU on.  It then proceeds to follow the logic
   of the existing trampoline.S SMP cpu bringup code.

2) All calls into OBP have to be disallowed when domaining
   is enabled.  Since cpus boot straight into the kernel from
   the hypervisor, OBP has no state about that cpu and therefore
   cannot handle being invoked on that cpu.

   Luckily it's only a handful of interfaces which can be called
   after the OBP device tree is obtained.  For example, rebooting,
   halting, powering-off, and setting options node variables.

CPU removal support will require some infrastructure changes
here.  Namely we'll have to process the requests via a true
kernel thread instead of in a workqueue.  workqueues run on
a per-cpu thread, but when unconfiguring we might need to
force the thread to execute on another cpu if the current cpu
is the one being removed.  Removal of a cpu also causes the kernel
to destroy that cpu's workqueue running thread.

Another issue on removal is that we may have interrupts still
pointing to the cpu-to-be-removed.  So new code will be needed
to walk the active INO list and retarget those cpus as-needed.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:40 -07:00

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#ifndef _SPARC64_HYPERVISOR_H
#define _SPARC64_HYPERVISOR_H
/* Sun4v hypervisor interfaces and defines.
*
* Hypervisor calls are made via traps to software traps number 0x80
* and above. Registers %o0 to %o5 serve as argument, status, and
* return value registers.
*
* There are two kinds of these traps. First there are the normal
* "fast traps" which use software trap 0x80 and encode the function
* to invoke by number in register %o5. Argument and return value
* handling is as follows:
*
* -----------------------------------------------
* | %o5 | function number | undefined |
* | %o0 | argument 0 | return status |
* | %o1 | argument 1 | return value 1 |
* | %o2 | argument 2 | return value 2 |
* | %o3 | argument 3 | return value 3 |
* | %o4 | argument 4 | return value 4 |
* -----------------------------------------------
*
* The second type are "hyper-fast traps" which encode the function
* number in the software trap number itself. So these use trap
* numbers > 0x80. The register usage for hyper-fast traps is as
* follows:
*
* -----------------------------------------------
* | %o0 | argument 0 | return status |
* | %o1 | argument 1 | return value 1 |
* | %o2 | argument 2 | return value 2 |
* | %o3 | argument 3 | return value 3 |
* | %o4 | argument 4 | return value 4 |
* -----------------------------------------------
*
* Registers providing explicit arguments to the hypervisor calls
* are volatile across the call. Upon return their values are
* undefined unless explicitly specified as containing a particular
* return value by the specific call. The return status is always
* returned in register %o0, zero indicates a successful execution of
* the hypervisor call and other values indicate an error status as
* defined below. So, for example, if a hyper-fast trap takes
* arguments 0, 1, and 2, then %o0, %o1, and %o2 are volatile across
* the call and %o3, %o4, and %o5 would be preserved.
*
* If the hypervisor trap is invalid, or the fast trap function number
* is invalid, HV_EBADTRAP will be returned in %o0. Also, all 64-bits
* of the argument and return values are significant.
*/
/* Trap numbers. */
#define HV_FAST_TRAP 0x80
#define HV_MMU_MAP_ADDR_TRAP 0x83
#define HV_MMU_UNMAP_ADDR_TRAP 0x84
#define HV_TTRACE_ADDENTRY_TRAP 0x85
#define HV_CORE_TRAP 0xff
/* Error codes. */
#define HV_EOK 0 /* Successful return */
#define HV_ENOCPU 1 /* Invalid CPU id */
#define HV_ENORADDR 2 /* Invalid real address */
#define HV_ENOINTR 3 /* Invalid interrupt id */
#define HV_EBADPGSZ 4 /* Invalid pagesize encoding */
#define HV_EBADTSB 5 /* Invalid TSB description */
#define HV_EINVAL 6 /* Invalid argument */
#define HV_EBADTRAP 7 /* Invalid function number */
#define HV_EBADALIGN 8 /* Invalid address alignment */
#define HV_EWOULDBLOCK 9 /* Cannot complete w/o blocking */
#define HV_ENOACCESS 10 /* No access to resource */
#define HV_EIO 11 /* I/O error */
#define HV_ECPUERROR 12 /* CPU in error state */
#define HV_ENOTSUPPORTED 13 /* Function not supported */
#define HV_ENOMAP 14 /* No mapping found */
#define HV_ETOOMANY 15 /* Too many items specified */
#define HV_ECHANNEL 16 /* Invalid LDC channel */
#define HV_EBUSY 17 /* Resource busy */
/* mach_exit()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MACH_EXIT
* ARG0: exit code
* ERRORS: This service does not return.
*
* Stop all CPUs in the virtual domain and place them into the stopped
* state. The 64-bit exit code may be passed to a service entity as
* the domain's exit status. On systems without a service entity, the
* domain will undergo a reset, and the boot firmware will be
* reloaded.
*
* This function will never return to the guest that invokes it.
*
* Note: By convention an exit code of zero denotes a successful exit by
* the guest code. A non-zero exit code denotes a guest specific
* error indication.
*
*/
#define HV_FAST_MACH_EXIT 0x00
#ifndef __ASSEMBLY__
extern void sun4v_mach_exit(unsigned long exit_code);
#endif
/* Domain services. */
/* mach_desc()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MACH_DESC
* ARG0: buffer
* ARG1: length
* RET0: status
* RET1: length
* ERRORS: HV_EBADALIGN Buffer is badly aligned
* HV_ENORADDR Buffer is to an illegal real address.
* HV_EINVAL Buffer length is too small for complete
* machine description.
*
* Copy the most current machine description into the buffer indicated
* by the real address in ARG0. The buffer provided must be 16 byte
* aligned. Upon success or HV_EINVAL, this service returns the
* actual size of the machine description in the RET1 return value.
*
* Note: A method of determining the appropriate buffer size for the
* machine description is to first call this service with a buffer
* length of 0 bytes.
*/
#define HV_FAST_MACH_DESC 0x01
#ifndef __ASSEMBLY__
extern unsigned long sun4v_mach_desc(unsigned long buffer_pa,
unsigned long buf_len,
unsigned long *real_buf_len);
#endif
/* mach_sir()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MACH_SIR
* ERRORS: This service does not return.
*
* Perform a software initiated reset of the virtual machine domain.
* All CPUs are captured as soon as possible, all hardware devices are
* returned to the entry default state, and the domain is restarted at
* the SIR (trap type 0x04) real trap table (RTBA) entry point on one
* of the CPUs. The single CPU restarted is selected as determined by
* platform specific policy. Memory is preserved across this
* operation.
*/
#define HV_FAST_MACH_SIR 0x02
#ifndef __ASSEMBLY__
extern void sun4v_mach_sir(void);
#endif
/* mach_set_watchdog()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MACH_SET_WATCHDOG
* ARG0: timeout in milliseconds
* RET0: status
* RET1: time remaining in milliseconds
*
* A guest uses this API to set a watchdog timer. Once the gues has set
* the timer, it must call the timer service again either to disable or
* postpone the expiration. If the timer expires before being reset or
* disabled, then the hypervisor take a platform specific action leading
* to guest termination within a bounded time period. The platform action
* may include recovery actions such as reporting the expiration to a
* Service Processor, and/or automatically restarting the gues.
*
* The 'timeout' parameter is specified in milliseconds, however the
* implementated granularity is given by the 'watchdog-resolution'
* property in the 'platform' node of the guest's machine description.
* The largest allowed timeout value is specified by the
* 'watchdog-max-timeout' property of the 'platform' node.
*
* If the 'timeout' argument is not zero, the watchdog timer is set to
* expire after a minimum of 'timeout' milliseconds.
*
* If the 'timeout' argument is zero, the watchdog timer is disabled.
*
* If the 'timeout' value exceeds the value of the 'max-watchdog-timeout'
* property, the hypervisor leaves the watchdog timer state unchanged,
* and returns a status of EINVAL.
*
* The 'time remaining' return value is valid regardless of whether the
* return status is EOK or EINVAL. A non-zero return value indicates the
* number of milliseconds that were remaining until the timer was to expire.
* If less than one millisecond remains, the return value is '1'. If the
* watchdog timer was disabled at the time of the call, the return value is
* zero.
*
* If the hypervisor cannot support the exact timeout value requested, but
* can support a larger timeout value, the hypervisor may round the actual
* timeout to a value larger than the requested timeout, consequently the
* 'time remaining' return value may be larger than the previously requested
* timeout value.
*
* Any guest OS debugger should be aware that the watchdog service may be in
* use. Consequently, it is recommended that the watchdog service is
* disabled upon debugger entry (e.g. reaching a breakpoint), and then
* re-enabled upon returning to normal execution. The API has been designed
* with this in mind, and the 'time remaining' result of the disable call may
* be used directly as the timeout argument of the re-enable call.
*/
#define HV_FAST_MACH_SET_WATCHDOG 0x05
#ifndef __ASSEMBLY__
extern unsigned long sun4v_mach_set_watchdog(unsigned long timeout,
unsigned long *orig_timeout);
#endif
/* CPU services.
*
* CPUs represent devices that can execute software threads. A single
* chip that contains multiple cores or strands is represented as
* multiple CPUs with unique CPU identifiers. CPUs are exported to
* OBP via the machine description (and to the OS via the OBP device
* tree). CPUs are always in one of three states: stopped, running,
* or error.
*
* A CPU ID is a pre-assigned 16-bit value that uniquely identifies a
* CPU within a logical domain. Operations that are to be performed
* on multiple CPUs specify them via a CPU list. A CPU list is an
* array in real memory, of which each 16-bit word is a CPU ID. CPU
* lists are passed through the API as two arguments. The first is
* the number of entries (16-bit words) in the CPU list, and the
* second is the (real address) pointer to the CPU ID list.
*/
/* cpu_start()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CPU_START
* ARG0: CPU ID
* ARG1: PC
* ARG2: RTBA
* ARG3: target ARG0
* RET0: status
* ERRORS: ENOCPU Invalid CPU ID
* EINVAL Target CPU ID is not in the stopped state
* ENORADDR Invalid PC or RTBA real address
* EBADALIGN Unaligned PC or unaligned RTBA
* EWOULDBLOCK Starting resources are not available
*
* Start CPU with given CPU ID with PC in %pc and with a real trap
* base address value of RTBA. The indicated CPU must be in the
* stopped state. The supplied RTBA must be aligned on a 256 byte
* boundary. On successful completion, the specified CPU will be in
* the running state and will be supplied with "target ARG0" in %o0
* and RTBA in %tba.
*/
#define HV_FAST_CPU_START 0x10
#ifndef __ASSEMBLY__
extern unsigned long sun4v_cpu_start(unsigned long cpuid,
unsigned long pc,
unsigned long rtba,
unsigned long arg0);
#endif
/* cpu_stop()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CPU_STOP
* ARG0: CPU ID
* RET0: status
* ERRORS: ENOCPU Invalid CPU ID
* EINVAL Target CPU ID is the current cpu
* EINVAL Target CPU ID is not in the running state
* EWOULDBLOCK Stopping resources are not available
* ENOTSUPPORTED Not supported on this platform
*
* The specified CPU is stopped. The indicated CPU must be in the
* running state. On completion, it will be in the stopped state. It
* is not legal to stop the current CPU.
*
* Note: As this service cannot be used to stop the current cpu, this service
* may not be used to stop the last running CPU in a domain. To stop
* and exit a running domain, a guest must use the mach_exit() service.
*/
#define HV_FAST_CPU_STOP 0x11
#ifndef __ASSEMBLY__
extern unsigned long sun4v_cpu_stop(unsigned long cpuid);
#endif
/* cpu_yield()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CPU_YIELD
* RET0: status
* ERRORS: No possible error.
*
* Suspend execution on the current CPU. Execution will resume when
* an interrupt (device, %stick_compare, or cross-call) is targeted to
* the CPU. On some CPUs, this API may be used by the hypervisor to
* save power by disabling hardware strands.
*/
#define HV_FAST_CPU_YIELD 0x12
#ifndef __ASSEMBLY__
extern unsigned long sun4v_cpu_yield(void);
#endif
/* cpu_qconf()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CPU_QCONF
* ARG0: queue
* ARG1: base real address
* ARG2: number of entries
* RET0: status
* ERRORS: ENORADDR Invalid base real address
* EINVAL Invalid queue or number of entries is less
* than 2 or too large.
* EBADALIGN Base real address is not correctly aligned
* for size.
*
* Configure the given queue to be placed at the given base real
* address, with the given number of entries. The number of entries
* must be a power of 2. The base real address must be aligned
* exactly to match the queue size. Each queue entry is 64 bytes
* long, so for example a 32 entry queue must be aligned on a 2048
* byte real address boundary.
*
* The specified queue is unconfigured if the number of entries is given
* as zero.
*
* For the current version of this API service, the argument queue is defined
* as follows:
*
* queue description
* ----- -------------------------
* 0x3c cpu mondo queue
* 0x3d device mondo queue
* 0x3e resumable error queue
* 0x3f non-resumable error queue
*
* Note: The maximum number of entries for each queue for a specific cpu may
* be determined from the machine description.
*/
#define HV_FAST_CPU_QCONF 0x14
#define HV_CPU_QUEUE_CPU_MONDO 0x3c
#define HV_CPU_QUEUE_DEVICE_MONDO 0x3d
#define HV_CPU_QUEUE_RES_ERROR 0x3e
#define HV_CPU_QUEUE_NONRES_ERROR 0x3f
#ifndef __ASSEMBLY__
extern unsigned long sun4v_cpu_qconf(unsigned long type,
unsigned long queue_paddr,
unsigned long num_queue_entries);
#endif
/* cpu_qinfo()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CPU_QINFO
* ARG0: queue
* RET0: status
* RET1: base real address
* RET1: number of entries
* ERRORS: EINVAL Invalid queue
*
* Return the configuration info for the given queue. The base real
* address and number of entries of the defined queue are returned.
* The queue argument values are the same as for cpu_qconf() above.
*
* If the specified queue is a valid queue number, but no queue has
* been defined, the number of entries will be set to zero and the
* base real address returned is undefined.
*/
#define HV_FAST_CPU_QINFO 0x15
/* cpu_mondo_send()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CPU_MONDO_SEND
* ARG0-1: CPU list
* ARG2: data real address
* RET0: status
* ERRORS: EBADALIGN Mondo data is not 64-byte aligned or CPU list
* is not 2-byte aligned.
* ENORADDR Invalid data mondo address, or invalid cpu list
* address.
* ENOCPU Invalid cpu in CPU list
* EWOULDBLOCK Some or all of the listed CPUs did not receive
* the mondo
* ECPUERROR One or more of the listed CPUs are in error
* state, use HV_FAST_CPU_STATE to see which ones
* EINVAL CPU list includes caller's CPU ID
*
* Send a mondo interrupt to the CPUs in the given CPU list with the
* 64-bytes at the given data real address. The data must be 64-byte
* aligned. The mondo data will be delivered to the cpu_mondo queues
* of the recipient CPUs.
*
* In all cases, error or not, the CPUs in the CPU list to which the
* mondo has been successfully delivered will be indicated by having
* their entry in CPU list updated with the value 0xffff.
*/
#define HV_FAST_CPU_MONDO_SEND 0x42
#ifndef __ASSEMBLY__
extern unsigned long sun4v_cpu_mondo_send(unsigned long cpu_count, unsigned long cpu_list_pa, unsigned long mondo_block_pa);
#endif
/* cpu_myid()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CPU_MYID
* RET0: status
* RET1: CPU ID
* ERRORS: No errors defined.
*
* Return the hypervisor ID handle for the current CPU. Use by a
* virtual CPU to discover it's own identity.
*/
#define HV_FAST_CPU_MYID 0x16
/* cpu_state()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CPU_STATE
* ARG0: CPU ID
* RET0: status
* RET1: state
* ERRORS: ENOCPU Invalid CPU ID
*
* Retrieve the current state of the CPU with the given CPU ID.
*/
#define HV_FAST_CPU_STATE 0x17
#define HV_CPU_STATE_STOPPED 0x01
#define HV_CPU_STATE_RUNNING 0x02
#define HV_CPU_STATE_ERROR 0x03
#ifndef __ASSEMBLY__
extern long sun4v_cpu_state(unsigned long cpuid);
#endif
/* cpu_set_rtba()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CPU_SET_RTBA
* ARG0: RTBA
* RET0: status
* RET1: previous RTBA
* ERRORS: ENORADDR Invalid RTBA real address
* EBADALIGN RTBA is incorrectly aligned for a trap table
*
* Set the real trap base address of the local cpu to the given RTBA.
* The supplied RTBA must be aligned on a 256 byte boundary. Upon
* success the previous value of the RTBA is returned in RET1.
*
* Note: This service does not affect %tba
*/
#define HV_FAST_CPU_SET_RTBA 0x18
/* cpu_set_rtba()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CPU_GET_RTBA
* RET0: status
* RET1: previous RTBA
* ERRORS: No possible error.
*
* Returns the current value of RTBA in RET1.
*/
#define HV_FAST_CPU_GET_RTBA 0x19
/* MMU services.
*
* Layout of a TSB description for mmu_tsb_ctx{,non}0() calls.
*/
#ifndef __ASSEMBLY__
struct hv_tsb_descr {
unsigned short pgsz_idx;
unsigned short assoc;
unsigned int num_ttes; /* in TTEs */
unsigned int ctx_idx;
unsigned int pgsz_mask;
unsigned long tsb_base;
unsigned long resv;
};
#endif
#define HV_TSB_DESCR_PGSZ_IDX_OFFSET 0x00
#define HV_TSB_DESCR_ASSOC_OFFSET 0x02
#define HV_TSB_DESCR_NUM_TTES_OFFSET 0x04
#define HV_TSB_DESCR_CTX_IDX_OFFSET 0x08
#define HV_TSB_DESCR_PGSZ_MASK_OFFSET 0x0c
#define HV_TSB_DESCR_TSB_BASE_OFFSET 0x10
#define HV_TSB_DESCR_RESV_OFFSET 0x18
/* Page size bitmask. */
#define HV_PGSZ_MASK_8K (1 << 0)
#define HV_PGSZ_MASK_64K (1 << 1)
#define HV_PGSZ_MASK_512K (1 << 2)
#define HV_PGSZ_MASK_4MB (1 << 3)
#define HV_PGSZ_MASK_32MB (1 << 4)
#define HV_PGSZ_MASK_256MB (1 << 5)
#define HV_PGSZ_MASK_2GB (1 << 6)
#define HV_PGSZ_MASK_16GB (1 << 7)
/* Page size index. The value given in the TSB descriptor must correspond
* to the smallest page size specified in the pgsz_mask page size bitmask.
*/
#define HV_PGSZ_IDX_8K 0
#define HV_PGSZ_IDX_64K 1
#define HV_PGSZ_IDX_512K 2
#define HV_PGSZ_IDX_4MB 3
#define HV_PGSZ_IDX_32MB 4
#define HV_PGSZ_IDX_256MB 5
#define HV_PGSZ_IDX_2GB 6
#define HV_PGSZ_IDX_16GB 7
/* MMU fault status area.
*
* MMU related faults have their status and fault address information
* placed into a memory region made available by privileged code. Each
* virtual processor must make a mmu_fault_area_conf() call to tell the
* hypervisor where that processor's fault status should be stored.
*
* The fault status block is a multiple of 64-bytes and must be aligned
* on a 64-byte boundary.
*/
#ifndef __ASSEMBLY__
struct hv_fault_status {
unsigned long i_fault_type;
unsigned long i_fault_addr;
unsigned long i_fault_ctx;
unsigned long i_reserved[5];
unsigned long d_fault_type;
unsigned long d_fault_addr;
unsigned long d_fault_ctx;
unsigned long d_reserved[5];
};
#endif
#define HV_FAULT_I_TYPE_OFFSET 0x00
#define HV_FAULT_I_ADDR_OFFSET 0x08
#define HV_FAULT_I_CTX_OFFSET 0x10
#define HV_FAULT_D_TYPE_OFFSET 0x40
#define HV_FAULT_D_ADDR_OFFSET 0x48
#define HV_FAULT_D_CTX_OFFSET 0x50
#define HV_FAULT_TYPE_FAST_MISS 1
#define HV_FAULT_TYPE_FAST_PROT 2
#define HV_FAULT_TYPE_MMU_MISS 3
#define HV_FAULT_TYPE_INV_RA 4
#define HV_FAULT_TYPE_PRIV_VIOL 5
#define HV_FAULT_TYPE_PROT_VIOL 6
#define HV_FAULT_TYPE_NFO 7
#define HV_FAULT_TYPE_NFO_SEFF 8
#define HV_FAULT_TYPE_INV_VA 9
#define HV_FAULT_TYPE_INV_ASI 10
#define HV_FAULT_TYPE_NC_ATOMIC 11
#define HV_FAULT_TYPE_PRIV_ACT 12
#define HV_FAULT_TYPE_RESV1 13
#define HV_FAULT_TYPE_UNALIGNED 14
#define HV_FAULT_TYPE_INV_PGSZ 15
/* Values 16 --> -2 are reserved. */
#define HV_FAULT_TYPE_MULTIPLE -1
/* Flags argument for mmu_{map,unmap}_addr(), mmu_demap_{page,context,all}(),
* and mmu_{map,unmap}_perm_addr().
*/
#define HV_MMU_DMMU 0x01
#define HV_MMU_IMMU 0x02
#define HV_MMU_ALL (HV_MMU_DMMU | HV_MMU_IMMU)
/* mmu_map_addr()
* TRAP: HV_MMU_MAP_ADDR_TRAP
* ARG0: virtual address
* ARG1: mmu context
* ARG2: TTE
* ARG3: flags (HV_MMU_{IMMU,DMMU})
* ERRORS: EINVAL Invalid virtual address, mmu context, or flags
* EBADPGSZ Invalid page size value
* ENORADDR Invalid real address in TTE
*
* Create a non-permanent mapping using the given TTE, virtual
* address, and mmu context. The flags argument determines which
* (data, or instruction, or both) TLB the mapping gets loaded into.
*
* The behavior is undefined if the valid bit is clear in the TTE.
*
* Note: This API call is for privileged code to specify temporary translation
* mappings without the need to create and manage a TSB.
*/
/* mmu_unmap_addr()
* TRAP: HV_MMU_UNMAP_ADDR_TRAP
* ARG0: virtual address
* ARG1: mmu context
* ARG2: flags (HV_MMU_{IMMU,DMMU})
* ERRORS: EINVAL Invalid virtual address, mmu context, or flags
*
* Demaps the given virtual address in the given mmu context on this
* CPU. This function is intended to be used to demap pages mapped
* with mmu_map_addr. This service is equivalent to invoking
* mmu_demap_page() with only the current CPU in the CPU list. The
* flags argument determines which (data, or instruction, or both) TLB
* the mapping gets unmapped from.
*
* Attempting to perform an unmap operation for a previously defined
* permanent mapping will have undefined results.
*/
/* mmu_tsb_ctx0()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_TSB_CTX0
* ARG0: number of TSB descriptions
* ARG1: TSB descriptions pointer
* RET0: status
* ERRORS: ENORADDR Invalid TSB descriptions pointer or
* TSB base within a descriptor
* EBADALIGN TSB descriptions pointer is not aligned
* to an 8-byte boundary, or TSB base
* within a descriptor is not aligned for
* the given TSB size
* EBADPGSZ Invalid page size in a TSB descriptor
* EBADTSB Invalid associativity or size in a TSB
* descriptor
* EINVAL Invalid number of TSB descriptions, or
* invalid context index in a TSB
* descriptor, or index page size not
* equal to smallest page size in page
* size bitmask field.
*
* Configures the TSBs for the current CPU for virtual addresses with
* context zero. The TSB descriptions pointer is a pointer to an
* array of the given number of TSB descriptions.
*
* Note: The maximum number of TSBs available to a virtual CPU is given by the
* mmu-max-#tsbs property of the cpu's corresponding "cpu" node in the
* machine description.
*/
#define HV_FAST_MMU_TSB_CTX0 0x20
#ifndef __ASSEMBLY__
extern unsigned long sun4v_mmu_tsb_ctx0(unsigned long num_descriptions,
unsigned long tsb_desc_ra);
#endif
/* mmu_tsb_ctxnon0()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_TSB_CTXNON0
* ARG0: number of TSB descriptions
* ARG1: TSB descriptions pointer
* RET0: status
* ERRORS: Same as for mmu_tsb_ctx0() above.
*
* Configures the TSBs for the current CPU for virtual addresses with
* non-zero contexts. The TSB descriptions pointer is a pointer to an
* array of the given number of TSB descriptions.
*
* Note: A maximum of 16 TSBs may be specified in the TSB description list.
*/
#define HV_FAST_MMU_TSB_CTXNON0 0x21
/* mmu_demap_page()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_DEMAP_PAGE
* ARG0: reserved, must be zero
* ARG1: reserved, must be zero
* ARG2: virtual address
* ARG3: mmu context
* ARG4: flags (HV_MMU_{IMMU,DMMU})
* RET0: status
* ERRORS: EINVAL Invalid virutal address, context, or
* flags value
* ENOTSUPPORTED ARG0 or ARG1 is non-zero
*
* Demaps any page mapping of the given virtual address in the given
* mmu context for the current virtual CPU. Any virtually tagged
* caches are guaranteed to be kept consistent. The flags argument
* determines which TLB (instruction, or data, or both) participate in
* the operation.
*
* ARG0 and ARG1 are both reserved and must be set to zero.
*/
#define HV_FAST_MMU_DEMAP_PAGE 0x22
/* mmu_demap_ctx()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_DEMAP_CTX
* ARG0: reserved, must be zero
* ARG1: reserved, must be zero
* ARG2: mmu context
* ARG3: flags (HV_MMU_{IMMU,DMMU})
* RET0: status
* ERRORS: EINVAL Invalid context or flags value
* ENOTSUPPORTED ARG0 or ARG1 is non-zero
*
* Demaps all non-permanent virtual page mappings previously specified
* for the given context for the current virtual CPU. Any virtual
* tagged caches are guaranteed to be kept consistent. The flags
* argument determines which TLB (instruction, or data, or both)
* participate in the operation.
*
* ARG0 and ARG1 are both reserved and must be set to zero.
*/
#define HV_FAST_MMU_DEMAP_CTX 0x23
/* mmu_demap_all()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_DEMAP_ALL
* ARG0: reserved, must be zero
* ARG1: reserved, must be zero
* ARG2: flags (HV_MMU_{IMMU,DMMU})
* RET0: status
* ERRORS: EINVAL Invalid flags value
* ENOTSUPPORTED ARG0 or ARG1 is non-zero
*
* Demaps all non-permanent virtual page mappings previously specified
* for the current virtual CPU. Any virtual tagged caches are
* guaranteed to be kept consistent. The flags argument determines
* which TLB (instruction, or data, or both) participate in the
* operation.
*
* ARG0 and ARG1 are both reserved and must be set to zero.
*/
#define HV_FAST_MMU_DEMAP_ALL 0x24
/* mmu_map_perm_addr()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_MAP_PERM_ADDR
* ARG0: virtual address
* ARG1: reserved, must be zero
* ARG2: TTE
* ARG3: flags (HV_MMU_{IMMU,DMMU})
* RET0: status
* ERRORS: EINVAL Invalid virutal address or flags value
* EBADPGSZ Invalid page size value
* ENORADDR Invalid real address in TTE
* ETOOMANY Too many mappings (max of 8 reached)
*
* Create a permanent mapping using the given TTE and virtual address
* for context 0 on the calling virtual CPU. A maximum of 8 such
* permanent mappings may be specified by privileged code. Mappings
* may be removed with mmu_unmap_perm_addr().
*
* The behavior is undefined if a TTE with the valid bit clear is given.
*
* Note: This call is used to specify address space mappings for which
* privileged code does not expect to receive misses. For example,
* this mechanism can be used to map kernel nucleus code and data.
*/
#define HV_FAST_MMU_MAP_PERM_ADDR 0x25
#ifndef __ASSEMBLY__
extern unsigned long sun4v_mmu_map_perm_addr(unsigned long vaddr,
unsigned long set_to_zero,
unsigned long tte,
unsigned long flags);
#endif
/* mmu_fault_area_conf()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_FAULT_AREA_CONF
* ARG0: real address
* RET0: status
* RET1: previous mmu fault area real address
* ERRORS: ENORADDR Invalid real address
* EBADALIGN Invalid alignment for fault area
*
* Configure the MMU fault status area for the calling CPU. A 64-byte
* aligned real address specifies where MMU fault status information
* is placed. The return value is the previously specified area, or 0
* for the first invocation. Specifying a fault area at real address
* 0 is not allowed.
*/
#define HV_FAST_MMU_FAULT_AREA_CONF 0x26
/* mmu_enable()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_ENABLE
* ARG0: enable flag
* ARG1: return target address
* RET0: status
* ERRORS: ENORADDR Invalid real address when disabling
* translation.
* EBADALIGN The return target address is not
* aligned to an instruction.
* EINVAL The enable flag request the current
* operating mode (e.g. disable if already
* disabled)
*
* Enable or disable virtual address translation for the calling CPU
* within the virtual machine domain. If the enable flag is zero,
* translation is disabled, any non-zero value will enable
* translation.
*
* When this function returns, the newly selected translation mode
* will be active. If the mmu is being enabled, then the return
* target address is a virtual address else it is a real address.
*
* Upon successful completion, control will be returned to the given
* return target address (ie. the cpu will jump to that address). On
* failure, the previous mmu mode remains and the trap simply returns
* as normal with the appropriate error code in RET0.
*/
#define HV_FAST_MMU_ENABLE 0x27
/* mmu_unmap_perm_addr()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_UNMAP_PERM_ADDR
* ARG0: virtual address
* ARG1: reserved, must be zero
* ARG2: flags (HV_MMU_{IMMU,DMMU})
* RET0: status
* ERRORS: EINVAL Invalid virutal address or flags value
* ENOMAP Specified mapping was not found
*
* Demaps any permanent page mapping (established via
* mmu_map_perm_addr()) at the given virtual address for context 0 on
* the current virtual CPU. Any virtual tagged caches are guaranteed
* to be kept consistent.
*/
#define HV_FAST_MMU_UNMAP_PERM_ADDR 0x28
/* mmu_tsb_ctx0_info()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_TSB_CTX0_INFO
* ARG0: max TSBs
* ARG1: buffer pointer
* RET0: status
* RET1: number of TSBs
* ERRORS: EINVAL Supplied buffer is too small
* EBADALIGN The buffer pointer is badly aligned
* ENORADDR Invalid real address for buffer pointer
*
* Return the TSB configuration as previous defined by mmu_tsb_ctx0()
* into the provided buffer. The size of the buffer is given in ARG1
* in terms of the number of TSB description entries.
*
* Upon return, RET1 always contains the number of TSB descriptions
* previously configured. If zero TSBs were configured, EOK is
* returned with RET1 containing 0.
*/
#define HV_FAST_MMU_TSB_CTX0_INFO 0x29
/* mmu_tsb_ctxnon0_info()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_TSB_CTXNON0_INFO
* ARG0: max TSBs
* ARG1: buffer pointer
* RET0: status
* RET1: number of TSBs
* ERRORS: EINVAL Supplied buffer is too small
* EBADALIGN The buffer pointer is badly aligned
* ENORADDR Invalid real address for buffer pointer
*
* Return the TSB configuration as previous defined by
* mmu_tsb_ctxnon0() into the provided buffer. The size of the buffer
* is given in ARG1 in terms of the number of TSB description entries.
*
* Upon return, RET1 always contains the number of TSB descriptions
* previously configured. If zero TSBs were configured, EOK is
* returned with RET1 containing 0.
*/
#define HV_FAST_MMU_TSB_CTXNON0_INFO 0x2a
/* mmu_fault_area_info()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMU_FAULT_AREA_INFO
* RET0: status
* RET1: fault area real address
* ERRORS: No errors defined.
*
* Return the currently defined MMU fault status area for the current
* CPU. The real address of the fault status area is returned in
* RET1, or 0 is returned in RET1 if no fault status area is defined.
*
* Note: mmu_fault_area_conf() may be called with the return value (RET1)
* from this service if there is a need to save and restore the fault
* area for a cpu.
*/
#define HV_FAST_MMU_FAULT_AREA_INFO 0x2b
/* Cache and Memory services. */
/* mem_scrub()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MEM_SCRUB
* ARG0: real address
* ARG1: length
* RET0: status
* RET1: length scrubbed
* ERRORS: ENORADDR Invalid real address
* EBADALIGN Start address or length are not correctly
* aligned
* EINVAL Length is zero
*
* Zero the memory contents in the range real address to real address
* plus length minus 1. Also, valid ECC will be generated for that
* memory address range. Scrubbing is started at the given real
* address, but may not scrub the entire given length. The actual
* length scrubbed will be returned in RET1.
*
* The real address and length must be aligned on an 8K boundary, or
* contain the start address and length from a sun4v error report.
*
* Note: There are two uses for this function. The first use is to block clear
* and initialize memory and the second is to scrub an u ncorrectable
* error reported via a resumable or non-resumable trap. The second
* use requires the arguments to be equal to the real address and length
* provided in a sun4v memory error report.
*/
#define HV_FAST_MEM_SCRUB 0x31
/* mem_sync()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MEM_SYNC
* ARG0: real address
* ARG1: length
* RET0: status
* RET1: length synced
* ERRORS: ENORADDR Invalid real address
* EBADALIGN Start address or length are not correctly
* aligned
* EINVAL Length is zero
*
* Force the next access within the real address to real address plus
* length minus 1 to be fetches from main system memory. Less than
* the given length may be synced, the actual amount synced is
* returned in RET1. The real address and length must be aligned on
* an 8K boundary.
*/
#define HV_FAST_MEM_SYNC 0x32
/* Time of day services.
*
* The hypervisor maintains the time of day on a per-domain basis.
* Changing the time of day in one domain does not affect the time of
* day on any other domain.
*
* Time is described by a single unsigned 64-bit word which is the
* number of seconds since the UNIX Epoch (00:00:00 UTC, January 1,
* 1970).
*/
/* tod_get()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_TOD_GET
* RET0: status
* RET1: TOD
* ERRORS: EWOULDBLOCK TOD resource is temporarily unavailable
* ENOTSUPPORTED If TOD not supported on this platform
*
* Return the current time of day. May block if TOD access is
* temporarily not possible.
*/
#define HV_FAST_TOD_GET 0x50
#ifndef __ASSEMBLY__
extern unsigned long sun4v_tod_get(unsigned long *time);
#endif
/* tod_set()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_TOD_SET
* ARG0: TOD
* RET0: status
* ERRORS: EWOULDBLOCK TOD resource is temporarily unavailable
* ENOTSUPPORTED If TOD not supported on this platform
*
* The current time of day is set to the value specified in ARG0. May
* block if TOD access is temporarily not possible.
*/
#define HV_FAST_TOD_SET 0x51
#ifndef __ASSEMBLY__
extern unsigned long sun4v_tod_set(unsigned long time);
#endif
/* Console services */
/* con_getchar()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CONS_GETCHAR
* RET0: status
* RET1: character
* ERRORS: EWOULDBLOCK No character available.
*
* Returns a character from the console device. If no character is
* available then an EWOULDBLOCK error is returned. If a character is
* available, then the returned status is EOK and the character value
* is in RET1.
*
* A virtual BREAK is represented by the 64-bit value -1.
*
* A virtual HUP signal is represented by the 64-bit value -2.
*/
#define HV_FAST_CONS_GETCHAR 0x60
/* con_putchar()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CONS_PUTCHAR
* ARG0: character
* RET0: status
* ERRORS: EINVAL Illegal character
* EWOULDBLOCK Output buffer currently full, would block
*
* Send a character to the console device. Only character values
* between 0 and 255 may be used. Values outside this range are
* invalid except for the 64-bit value -1 which is used to send a
* virtual BREAK.
*/
#define HV_FAST_CONS_PUTCHAR 0x61
/* con_read()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CONS_READ
* ARG0: buffer real address
* ARG1: buffer size in bytes
* RET0: status
* RET1: bytes read or BREAK or HUP
* ERRORS: EWOULDBLOCK No character available.
*
* Reads characters into a buffer from the console device. If no
* character is available then an EWOULDBLOCK error is returned.
* If a character is available, then the returned status is EOK
* and the number of bytes read into the given buffer is provided
* in RET1.
*
* A virtual BREAK is represented by the 64-bit RET1 value -1.
*
* A virtual HUP signal is represented by the 64-bit RET1 value -2.
*
* If BREAK or HUP are indicated, no bytes were read into buffer.
*/
#define HV_FAST_CONS_READ 0x62
/* con_write()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CONS_WRITE
* ARG0: buffer real address
* ARG1: buffer size in bytes
* RET0: status
* RET1: bytes written
* ERRORS: EWOULDBLOCK Output buffer currently full, would block
*
* Send a characters in buffer to the console device. Breaks must be
* sent using con_putchar().
*/
#define HV_FAST_CONS_WRITE 0x63
#ifndef __ASSEMBLY__
extern long sun4v_con_getchar(long *status);
extern long sun4v_con_putchar(long c);
extern long sun4v_con_read(unsigned long buffer,
unsigned long size,
unsigned long *bytes_read);
extern unsigned long sun4v_con_write(unsigned long buffer,
unsigned long size,
unsigned long *bytes_written);
#endif
/* mach_set_soft_state()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MACH_SET_SOFT_STATE
* ARG0: software state
* ARG1: software state description pointer
* RET0: status
* ERRORS: EINVAL software state not valid or software state
* description is not NULL terminated
* ENORADDR software state description pointer is not a
* valid real address
* EBADALIGNED software state description is not correctly
* aligned
*
* This allows the guest to report it's soft state to the hypervisor. There
* are two primary components to this state. The first part states whether
* the guest software is running or not. The second containts optional
* details specific to the software.
*
* The software state argument is defined below in HV_SOFT_STATE_*, and
* indicates whether the guest is operating normally or in a transitional
* state.
*
* The software state description argument is a real address of a data buffer
* of size 32-bytes aligned on a 32-byte boundary. It is treated as a NULL
* terminated 7-bit ASCII string of up to 31 characters not including the
* NULL termination.
*/
#define HV_FAST_MACH_SET_SOFT_STATE 0x70
#define HV_SOFT_STATE_NORMAL 0x01
#define HV_SOFT_STATE_TRANSITION 0x02
#ifndef __ASSEMBLY__
extern unsigned long sun4v_mach_set_soft_state(unsigned long soft_state,
unsigned long msg_string_ra);
#endif
/* mach_get_soft_state()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MACH_GET_SOFT_STATE
* ARG0: software state description pointer
* RET0: status
* RET1: software state
* ERRORS: ENORADDR software state description pointer is not a
* valid real address
* EBADALIGNED software state description is not correctly
* aligned
*
* Retrieve the current value of the guest's software state. The rules
* for the software state pointer are the same as for mach_set_soft_state()
* above.
*/
#define HV_FAST_MACH_GET_SOFT_STATE 0x71
/* svc_send()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_SVC_SEND
* ARG0: service ID
* ARG1: buffer real address
* ARG2: buffer size
* RET0: STATUS
* RET1: sent_bytes
*
* Be careful, all output registers are clobbered by this operation,
* so for example it is not possible to save away a value in %o4
* across the trap.
*/
#define HV_FAST_SVC_SEND 0x80
/* svc_recv()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_SVC_RECV
* ARG0: service ID
* ARG1: buffer real address
* ARG2: buffer size
* RET0: STATUS
* RET1: recv_bytes
*
* Be careful, all output registers are clobbered by this operation,
* so for example it is not possible to save away a value in %o4
* across the trap.
*/
#define HV_FAST_SVC_RECV 0x81
/* svc_getstatus()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_SVC_GETSTATUS
* ARG0: service ID
* RET0: STATUS
* RET1: status bits
*/
#define HV_FAST_SVC_GETSTATUS 0x82
/* svc_setstatus()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_SVC_SETSTATUS
* ARG0: service ID
* ARG1: bits to set
* RET0: STATUS
*/
#define HV_FAST_SVC_SETSTATUS 0x83
/* svc_clrstatus()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_SVC_CLRSTATUS
* ARG0: service ID
* ARG1: bits to clear
* RET0: STATUS
*/
#define HV_FAST_SVC_CLRSTATUS 0x84
#ifndef __ASSEMBLY__
extern unsigned long sun4v_svc_send(unsigned long svc_id,
unsigned long buffer,
unsigned long buffer_size,
unsigned long *sent_bytes);
extern unsigned long sun4v_svc_recv(unsigned long svc_id,
unsigned long buffer,
unsigned long buffer_size,
unsigned long *recv_bytes);
extern unsigned long sun4v_svc_getstatus(unsigned long svc_id,
unsigned long *status_bits);
extern unsigned long sun4v_svc_setstatus(unsigned long svc_id,
unsigned long status_bits);
extern unsigned long sun4v_svc_clrstatus(unsigned long svc_id,
unsigned long status_bits);
#endif
/* Trap trace services.
*
* The hypervisor provides a trap tracing capability for privileged
* code running on each virtual CPU. Privileged code provides a
* round-robin trap trace queue within which the hypervisor writes
* 64-byte entries detailing hyperprivileged traps taken n behalf of
* privileged code. This is provided as a debugging capability for
* privileged code.
*
* The trap trace control structure is 64-bytes long and placed at the
* start (offset 0) of the trap trace buffer, and is described as
* follows:
*/
#ifndef __ASSEMBLY__
struct hv_trap_trace_control {
unsigned long head_offset;
unsigned long tail_offset;
unsigned long __reserved[0x30 / sizeof(unsigned long)];
};
#endif
#define HV_TRAP_TRACE_CTRL_HEAD_OFFSET 0x00
#define HV_TRAP_TRACE_CTRL_TAIL_OFFSET 0x08
/* The head offset is the offset of the most recently completed entry
* in the trap-trace buffer. The tail offset is the offset of the
* next entry to be written. The control structure is owned and
* modified by the hypervisor. A guest may not modify the control
* structure contents. Attempts to do so will result in undefined
* behavior for the guest.
*
* Each trap trace buffer entry is layed out as follows:
*/
#ifndef __ASSEMBLY__
struct hv_trap_trace_entry {
unsigned char type; /* Hypervisor or guest entry? */
unsigned char hpstate; /* Hyper-privileged state */
unsigned char tl; /* Trap level */
unsigned char gl; /* Global register level */
unsigned short tt; /* Trap type */
unsigned short tag; /* Extended trap identifier */
unsigned long tstate; /* Trap state */
unsigned long tick; /* Tick */
unsigned long tpc; /* Trap PC */
unsigned long f1; /* Entry specific */
unsigned long f2; /* Entry specific */
unsigned long f3; /* Entry specific */
unsigned long f4; /* Entry specific */
};
#endif
#define HV_TRAP_TRACE_ENTRY_TYPE 0x00
#define HV_TRAP_TRACE_ENTRY_HPSTATE 0x01
#define HV_TRAP_TRACE_ENTRY_TL 0x02
#define HV_TRAP_TRACE_ENTRY_GL 0x03
#define HV_TRAP_TRACE_ENTRY_TT 0x04
#define HV_TRAP_TRACE_ENTRY_TAG 0x06
#define HV_TRAP_TRACE_ENTRY_TSTATE 0x08
#define HV_TRAP_TRACE_ENTRY_TICK 0x10
#define HV_TRAP_TRACE_ENTRY_TPC 0x18
#define HV_TRAP_TRACE_ENTRY_F1 0x20
#define HV_TRAP_TRACE_ENTRY_F2 0x28
#define HV_TRAP_TRACE_ENTRY_F3 0x30
#define HV_TRAP_TRACE_ENTRY_F4 0x38
/* The type field is encoded as follows. */
#define HV_TRAP_TYPE_UNDEF 0x00 /* Entry content undefined */
#define HV_TRAP_TYPE_HV 0x01 /* Hypervisor trap entry */
#define HV_TRAP_TYPE_GUEST 0xff /* Added via ttrace_addentry() */
/* ttrace_buf_conf()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_TTRACE_BUF_CONF
* ARG0: real address
* ARG1: number of entries
* RET0: status
* RET1: number of entries
* ERRORS: ENORADDR Invalid real address
* EINVAL Size is too small
* EBADALIGN Real address not aligned on 64-byte boundary
*
* Requests hypervisor trap tracing and declares a virtual CPU's trap
* trace buffer to the hypervisor. The real address supplies the real
* base address of the trap trace queue and must be 64-byte aligned.
* Specifying a value of 0 for the number of entries disables trap
* tracing for the calling virtual CPU. The buffer allocated must be
* sized for a power of two number of 64-byte trap trace entries plus
* an initial 64-byte control structure.
*
* This may be invoked any number of times so that a virtual CPU may
* relocate a trap trace buffer or create "snapshots" of information.
*
* If the real address is illegal or badly aligned, then trap tracing
* is disabled and an error is returned.
*
* Upon failure with EINVAL, this service call returns in RET1 the
* minimum number of buffer entries required. Upon other failures
* RET1 is undefined.
*/
#define HV_FAST_TTRACE_BUF_CONF 0x90
/* ttrace_buf_info()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_TTRACE_BUF_INFO
* RET0: status
* RET1: real address
* RET2: size
* ERRORS: None defined.
*
* Returns the size and location of the previously declared trap-trace
* buffer. In the event that no buffer was previously defined, or the
* buffer is disabled, this call will return a size of zero bytes.
*/
#define HV_FAST_TTRACE_BUF_INFO 0x91
/* ttrace_enable()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_TTRACE_ENABLE
* ARG0: enable
* RET0: status
* RET1: previous enable state
* ERRORS: EINVAL No trap trace buffer currently defined
*
* Enable or disable trap tracing, and return the previous enabled
* state in RET1. Future systems may define various flags for the
* enable argument (ARG0), for the moment a guest should pass
* "(uint64_t) -1" to enable, and "(uint64_t) 0" to disable all
* tracing - which will ensure future compatability.
*/
#define HV_FAST_TTRACE_ENABLE 0x92
/* ttrace_freeze()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_TTRACE_FREEZE
* ARG0: freeze
* RET0: status
* RET1: previous freeze state
* ERRORS: EINVAL No trap trace buffer currently defined
*
* Freeze or unfreeze trap tracing, returning the previous freeze
* state in RET1. A guest should pass a non-zero value to freeze and
* a zero value to unfreeze all tracing. The returned previous state
* is 0 for not frozen and 1 for frozen.
*/
#define HV_FAST_TTRACE_FREEZE 0x93
/* ttrace_addentry()
* TRAP: HV_TTRACE_ADDENTRY_TRAP
* ARG0: tag (16-bits)
* ARG1: data word 0
* ARG2: data word 1
* ARG3: data word 2
* ARG4: data word 3
* RET0: status
* ERRORS: EINVAL No trap trace buffer currently defined
*
* Add an entry to the trap trace buffer. Upon return only ARG0/RET0
* is modified - none of the other registers holding arguments are
* volatile across this hypervisor service.
*/
/* Core dump services.
*
* Since the hypervisor viraulizes and thus obscures a lot of the
* physical machine layout and state, traditional OS crash dumps can
* be difficult to diagnose especially when the problem is a
* configuration error of some sort.
*
* The dump services provide an opaque buffer into which the
* hypervisor can place it's internal state in order to assist in
* debugging such situations. The contents are opaque and extremely
* platform and hypervisor implementation specific. The guest, during
* a core dump, requests that the hypervisor update any information in
* the dump buffer in preparation to being dumped as part of the
* domain's memory image.
*/
/* dump_buf_update()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_DUMP_BUF_UPDATE
* ARG0: real address
* ARG1: size
* RET0: status
* RET1: required size of dump buffer
* ERRORS: ENORADDR Invalid real address
* EBADALIGN Real address is not aligned on a 64-byte
* boundary
* EINVAL Size is non-zero but less than minimum size
* required
* ENOTSUPPORTED Operation not supported on current logical
* domain
*
* Declare a domain dump buffer to the hypervisor. The real address
* provided for the domain dump buffer must be 64-byte aligned. The
* size specifies the size of the dump buffer and may be larger than
* the minimum size specified in the machine description. The
* hypervisor will fill the dump buffer with opaque data.
*
* Note: A guest may elect to include dump buffer contents as part of a crash
* dump to assist with debugging. This function may be called any number
* of times so that a guest may relocate a dump buffer, or create
* "snapshots" of any dump-buffer information. Each call to
* dump_buf_update() atomically declares the new dump buffer to the
* hypervisor.
*
* A specified size of 0 unconfigures the dump buffer. If the real
* address is illegal or badly aligned, then any currently active dump
* buffer is disabled and an error is returned.
*
* In the event that the call fails with EINVAL, RET1 contains the
* minimum size requires by the hypervisor for a valid dump buffer.
*/
#define HV_FAST_DUMP_BUF_UPDATE 0x94
/* dump_buf_info()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_DUMP_BUF_INFO
* RET0: status
* RET1: real address of current dump buffer
* RET2: size of current dump buffer
* ERRORS: No errors defined.
*
* Return the currently configures dump buffer description. A
* returned size of 0 bytes indicates an undefined dump buffer. In
* this case the return address in RET1 is undefined.
*/
#define HV_FAST_DUMP_BUF_INFO 0x95
/* Device interrupt services.
*
* Device interrupts are allocated to system bus bridges by the hypervisor,
* and described to OBP in the machine description. OBP then describes
* these interrupts to the OS via properties in the device tree.
*
* Terminology:
*
* cpuid Unique opaque value which represents a target cpu.
*
* devhandle Device handle. It uniquely identifies a device, and
* consistes of the lower 28-bits of the hi-cell of the
* first entry of the device's "reg" property in the
* OBP device tree.
*
* devino Device interrupt number. Specifies the relative
* interrupt number within the device. The unique
* combination of devhandle and devino are used to
* identify a specific device interrupt.
*
* Note: The devino value is the same as the values in the
* "interrupts" property or "interrupt-map" property
* in the OBP device tree for that device.
*
* sysino System interrupt number. A 64-bit unsigned interger
* representing a unique interrupt within a virtual
* machine.
*
* intr_state A flag representing the interrupt state for a given
* sysino. The state values are defined below.
*
* intr_enabled A flag representing the 'enabled' state for a given
* sysino. The enable values are defined below.
*/
#define HV_INTR_STATE_IDLE 0 /* Nothing pending */
#define HV_INTR_STATE_RECEIVED 1 /* Interrupt received by hardware */
#define HV_INTR_STATE_DELIVERED 2 /* Interrupt delivered to queue */
#define HV_INTR_DISABLED 0 /* sysino not enabled */
#define HV_INTR_ENABLED 1 /* sysino enabled */
/* intr_devino_to_sysino()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_INTR_DEVINO2SYSINO
* ARG0: devhandle
* ARG1: devino
* RET0: status
* RET1: sysino
* ERRORS: EINVAL Invalid devhandle/devino
*
* Converts a device specific interrupt number of the given
* devhandle/devino into a system specific ino (sysino).
*/
#define HV_FAST_INTR_DEVINO2SYSINO 0xa0
#ifndef __ASSEMBLY__
extern unsigned long sun4v_devino_to_sysino(unsigned long devhandle,
unsigned long devino);
#endif
/* intr_getenabled()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_INTR_GETENABLED
* ARG0: sysino
* RET0: status
* RET1: intr_enabled (HV_INTR_{DISABLED,ENABLED})
* ERRORS: EINVAL Invalid sysino
*
* Returns interrupt enabled state in RET1 for the interrupt defined
* by the given sysino.
*/
#define HV_FAST_INTR_GETENABLED 0xa1
#ifndef __ASSEMBLY__
extern unsigned long sun4v_intr_getenabled(unsigned long sysino);
#endif
/* intr_setenabled()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_INTR_SETENABLED
* ARG0: sysino
* ARG1: intr_enabled (HV_INTR_{DISABLED,ENABLED})
* RET0: status
* ERRORS: EINVAL Invalid sysino or intr_enabled value
*
* Set the 'enabled' state of the interrupt sysino.
*/
#define HV_FAST_INTR_SETENABLED 0xa2
#ifndef __ASSEMBLY__
extern unsigned long sun4v_intr_setenabled(unsigned long sysino, unsigned long intr_enabled);
#endif
/* intr_getstate()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_INTR_GETSTATE
* ARG0: sysino
* RET0: status
* RET1: intr_state (HV_INTR_STATE_*)
* ERRORS: EINVAL Invalid sysino
*
* Returns current state of the interrupt defined by the given sysino.
*/
#define HV_FAST_INTR_GETSTATE 0xa3
#ifndef __ASSEMBLY__
extern unsigned long sun4v_intr_getstate(unsigned long sysino);
#endif
/* intr_setstate()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_INTR_SETSTATE
* ARG0: sysino
* ARG1: intr_state (HV_INTR_STATE_*)
* RET0: status
* ERRORS: EINVAL Invalid sysino or intr_state value
*
* Sets the current state of the interrupt described by the given sysino
* value.
*
* Note: Setting the state to HV_INTR_STATE_IDLE clears any pending
* interrupt for sysino.
*/
#define HV_FAST_INTR_SETSTATE 0xa4
#ifndef __ASSEMBLY__
extern unsigned long sun4v_intr_setstate(unsigned long sysino, unsigned long intr_state);
#endif
/* intr_gettarget()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_INTR_GETTARGET
* ARG0: sysino
* RET0: status
* RET1: cpuid
* ERRORS: EINVAL Invalid sysino
*
* Returns CPU that is the current target of the interrupt defined by
* the given sysino. The CPU value returned is undefined if the target
* has not been set via intr_settarget().
*/
#define HV_FAST_INTR_GETTARGET 0xa5
#ifndef __ASSEMBLY__
extern unsigned long sun4v_intr_gettarget(unsigned long sysino);
#endif
/* intr_settarget()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_INTR_SETTARGET
* ARG0: sysino
* ARG1: cpuid
* RET0: status
* ERRORS: EINVAL Invalid sysino
* ENOCPU Invalid cpuid
*
* Set the target CPU for the interrupt defined by the given sysino.
*/
#define HV_FAST_INTR_SETTARGET 0xa6
#ifndef __ASSEMBLY__
extern unsigned long sun4v_intr_settarget(unsigned long sysino, unsigned long cpuid);
#endif
/* vintr_get_cookie()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_VINTR_GET_COOKIE
* ARG0: device handle
* ARG1: device ino
* RET0: status
* RET1: cookie
*/
#define HV_FAST_VINTR_GET_COOKIE 0xa7
/* vintr_set_cookie()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_VINTR_SET_COOKIE
* ARG0: device handle
* ARG1: device ino
* ARG2: cookie
* RET0: status
*/
#define HV_FAST_VINTR_SET_COOKIE 0xa8
/* vintr_get_valid()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_VINTR_GET_VALID
* ARG0: device handle
* ARG1: device ino
* RET0: status
* RET1: valid state
*/
#define HV_FAST_VINTR_GET_VALID 0xa9
/* vintr_set_valid()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_VINTR_SET_VALID
* ARG0: device handle
* ARG1: device ino
* ARG2: valid state
* RET0: status
*/
#define HV_FAST_VINTR_SET_VALID 0xaa
/* vintr_get_state()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_VINTR_GET_STATE
* ARG0: device handle
* ARG1: device ino
* RET0: status
* RET1: state
*/
#define HV_FAST_VINTR_GET_STATE 0xab
/* vintr_set_state()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_VINTR_SET_STATE
* ARG0: device handle
* ARG1: device ino
* ARG2: state
* RET0: status
*/
#define HV_FAST_VINTR_SET_STATE 0xac
/* vintr_get_target()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_VINTR_GET_TARGET
* ARG0: device handle
* ARG1: device ino
* RET0: status
* RET1: cpuid
*/
#define HV_FAST_VINTR_GET_TARGET 0xad
/* vintr_set_target()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_VINTR_SET_TARGET
* ARG0: device handle
* ARG1: device ino
* ARG2: cpuid
* RET0: status
*/
#define HV_FAST_VINTR_SET_TARGET 0xae
#ifndef __ASSEMBLY__
extern unsigned long sun4v_vintr_get_cookie(unsigned long dev_handle,
unsigned long dev_ino,
unsigned long *cookie);
extern unsigned long sun4v_vintr_set_cookie(unsigned long dev_handle,
unsigned long dev_ino,
unsigned long cookie);
extern unsigned long sun4v_vintr_get_valid(unsigned long dev_handle,
unsigned long dev_ino,
unsigned long *valid);
extern unsigned long sun4v_vintr_set_valid(unsigned long dev_handle,
unsigned long dev_ino,
unsigned long valid);
extern unsigned long sun4v_vintr_get_state(unsigned long dev_handle,
unsigned long dev_ino,
unsigned long *state);
extern unsigned long sun4v_vintr_set_state(unsigned long dev_handle,
unsigned long dev_ino,
unsigned long state);
extern unsigned long sun4v_vintr_get_target(unsigned long dev_handle,
unsigned long dev_ino,
unsigned long *cpuid);
extern unsigned long sun4v_vintr_set_target(unsigned long dev_handle,
unsigned long dev_ino,
unsigned long cpuid);
#endif
/* PCI IO services.
*
* See the terminology descriptions in the device interrupt services
* section above as those apply here too. Here are terminology
* definitions specific to these PCI IO services:
*
* tsbnum TSB number. Indentifies which io-tsb is used.
* For this version of the specification, tsbnum
* must be zero.
*
* tsbindex TSB index. Identifies which entry in the TSB
* is used. The first entry is zero.
*
* tsbid A 64-bit aligned data structure which contains
* a tsbnum and a tsbindex. Bits 63:32 contain the
* tsbnum and bits 31:00 contain the tsbindex.
*
* Use the HV_PCI_TSBID() macro to construct such
* values.
*
* io_attributes IO attributes for IOMMU mappings. One of more
* of the attritbute bits are stores in a 64-bit
* value. The values are defined below.
*
* r_addr 64-bit real address
*
* pci_device PCI device address. A PCI device address identifies
* a specific device on a specific PCI bus segment.
* A PCI device address ia a 32-bit unsigned integer
* with the following format:
*
* 00000000.bbbbbbbb.dddddfff.00000000
*
* Use the HV_PCI_DEVICE_BUILD() macro to construct
* such values.
*
* pci_config_offset
* PCI configureation space offset. For conventional
* PCI a value between 0 and 255. For extended
* configuration space, a value between 0 and 4095.
*
* Note: For PCI configuration space accesses, the offset
* must be aligned to the access size.
*
* error_flag A return value which specifies if the action succeeded
* or failed. 0 means no error, non-0 means some error
* occurred while performing the service.
*
* io_sync_direction
* Direction definition for pci_dma_sync(), defined
* below in HV_PCI_SYNC_*.
*
* io_page_list A list of io_page_addresses, an io_page_address is
* a real address.
*
* io_page_list_p A pointer to an io_page_list.
*
* "size based byte swap" - Some functions do size based byte swapping
* which allows sw to access pointers and
* counters in native form when the processor
* operates in a different endianness than the
* IO bus. Size-based byte swapping converts a
* multi-byte field between big-endian and
* little-endian format.
*/
#define HV_PCI_MAP_ATTR_READ 0x01
#define HV_PCI_MAP_ATTR_WRITE 0x02
#define HV_PCI_DEVICE_BUILD(b,d,f) \
((((b) & 0xff) << 16) | \
(((d) & 0x1f) << 11) | \
(((f) & 0x07) << 8))
#define HV_PCI_TSBID(__tsb_num, __tsb_index) \
((((u64)(__tsb_num)) << 32UL) | ((u64)(__tsb_index)))
#define HV_PCI_SYNC_FOR_DEVICE 0x01
#define HV_PCI_SYNC_FOR_CPU 0x02
/* pci_iommu_map()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_IOMMU_MAP
* ARG0: devhandle
* ARG1: tsbid
* ARG2: #ttes
* ARG3: io_attributes
* ARG4: io_page_list_p
* RET0: status
* RET1: #ttes mapped
* ERRORS: EINVAL Invalid devhandle/tsbnum/tsbindex/io_attributes
* EBADALIGN Improperly aligned real address
* ENORADDR Invalid real address
*
* Create IOMMU mappings in the sun4v device defined by the given
* devhandle. The mappings are created in the TSB defined by the
* tsbnum component of the given tsbid. The first mapping is created
* in the TSB i ndex defined by the tsbindex component of the given tsbid.
* The call creates up to #ttes mappings, the first one at tsbnum, tsbindex,
* the second at tsbnum, tsbindex + 1, etc.
*
* All mappings are created with the attributes defined by the io_attributes
* argument. The page mapping addresses are described in the io_page_list
* defined by the given io_page_list_p, which is a pointer to the io_page_list.
* The first entry in the io_page_list is the address for the first iotte, the
* 2nd for the 2nd iotte, and so on.
*
* Each io_page_address in the io_page_list must be appropriately aligned.
* #ttes must be greater than zero. For this version of the spec, the tsbnum
* component of the given tsbid must be zero.
*
* Returns the actual number of mappings creates, which may be less than
* or equal to the argument #ttes. If the function returns a value which
* is less than the #ttes, the caller may continus to call the function with
* an updated tsbid, #ttes, io_page_list_p arguments until all pages are
* mapped.
*
* Note: This function does not imply an iotte cache flush. The guest must
* demap an entry before re-mapping it.
*/
#define HV_FAST_PCI_IOMMU_MAP 0xb0
/* pci_iommu_demap()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_IOMMU_DEMAP
* ARG0: devhandle
* ARG1: tsbid
* ARG2: #ttes
* RET0: status
* RET1: #ttes demapped
* ERRORS: EINVAL Invalid devhandle/tsbnum/tsbindex
*
* Demap and flush IOMMU mappings in the device defined by the given
* devhandle. Demaps up to #ttes entries in the TSB defined by the tsbnum
* component of the given tsbid, starting at the TSB index defined by the
* tsbindex component of the given tsbid.
*
* For this version of the spec, the tsbnum of the given tsbid must be zero.
* #ttes must be greater than zero.
*
* Returns the actual number of ttes demapped, which may be less than or equal
* to the argument #ttes. If #ttes demapped is less than #ttes, the caller
* may continue to call this function with updated tsbid and #ttes arguments
* until all pages are demapped.
*
* Note: Entries do not have to be mapped to be demapped. A demap of an
* unmapped page will flush the entry from the tte cache.
*/
#define HV_FAST_PCI_IOMMU_DEMAP 0xb1
/* pci_iommu_getmap()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_IOMMU_GETMAP
* ARG0: devhandle
* ARG1: tsbid
* RET0: status
* RET1: io_attributes
* RET2: real address
* ERRORS: EINVAL Invalid devhandle/tsbnum/tsbindex
* ENOMAP Mapping is not valid, no translation exists
*
* Read and return the mapping in the device described by the given devhandle
* and tsbid. If successful, the io_attributes shall be returned in RET1
* and the page address of the mapping shall be returned in RET2.
*
* For this version of the spec, the tsbnum component of the given tsbid
* must be zero.
*/
#define HV_FAST_PCI_IOMMU_GETMAP 0xb2
/* pci_iommu_getbypass()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_IOMMU_GETBYPASS
* ARG0: devhandle
* ARG1: real address
* ARG2: io_attributes
* RET0: status
* RET1: io_addr
* ERRORS: EINVAL Invalid devhandle/io_attributes
* ENORADDR Invalid real address
* ENOTSUPPORTED Function not supported in this implementation.
*
* Create a "special" mapping in the device described by the given devhandle,
* for the given real address and attributes. Return the IO address in RET1
* if successful.
*/
#define HV_FAST_PCI_IOMMU_GETBYPASS 0xb3
/* pci_config_get()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_CONFIG_GET
* ARG0: devhandle
* ARG1: pci_device
* ARG2: pci_config_offset
* ARG3: size
* RET0: status
* RET1: error_flag
* RET2: data
* ERRORS: EINVAL Invalid devhandle/pci_device/offset/size
* EBADALIGN pci_config_offset not size aligned
* ENOACCESS Access to this offset is not permitted
*
* Read PCI configuration space for the adapter described by the given
* devhandle. Read size (1, 2, or 4) bytes of data from the given
* pci_device, at pci_config_offset from the beginning of the device's
* configuration space. If there was no error, RET1 is set to zero and
* RET2 is set to the data read. Insignificant bits in RET2 are not
* guarenteed to have any specific value and therefore must be ignored.
*
* The data returned in RET2 is size based byte swapped.
*
* If an error occurs during the read, set RET1 to a non-zero value. The
* given pci_config_offset must be 'size' aligned.
*/
#define HV_FAST_PCI_CONFIG_GET 0xb4
/* pci_config_put()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_CONFIG_PUT
* ARG0: devhandle
* ARG1: pci_device
* ARG2: pci_config_offset
* ARG3: size
* ARG4: data
* RET0: status
* RET1: error_flag
* ERRORS: EINVAL Invalid devhandle/pci_device/offset/size
* EBADALIGN pci_config_offset not size aligned
* ENOACCESS Access to this offset is not permitted
*
* Write PCI configuration space for the adapter described by the given
* devhandle. Write size (1, 2, or 4) bytes of data in a single operation,
* at pci_config_offset from the beginning of the device's configuration
* space. The data argument contains the data to be written to configuration
* space. Prior to writing, the data is size based byte swapped.
*
* If an error occurs during the write access, do not generate an error
* report, do set RET1 to a non-zero value. Otherwise RET1 is zero.
* The given pci_config_offset must be 'size' aligned.
*
* This function is permitted to read from offset zero in the configuration
* space described by the given pci_device if necessary to ensure that the
* write access to config space completes.
*/
#define HV_FAST_PCI_CONFIG_PUT 0xb5
/* pci_peek()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_PEEK
* ARG0: devhandle
* ARG1: real address
* ARG2: size
* RET0: status
* RET1: error_flag
* RET2: data
* ERRORS: EINVAL Invalid devhandle or size
* EBADALIGN Improperly aligned real address
* ENORADDR Bad real address
* ENOACCESS Guest access prohibited
*
* Attempt to read the IO address given by the given devhandle, real address,
* and size. Size must be 1, 2, 4, or 8. The read is performed as a single
* access operation using the given size. If an error occurs when reading
* from the given location, do not generate an error report, but return a
* non-zero value in RET1. If the read was successful, return zero in RET1
* and return the actual data read in RET2. The data returned is size based
* byte swapped.
*
* Non-significant bits in RET2 are not guarenteed to have any specific value
* and therefore must be ignored. If RET1 is returned as non-zero, the data
* value is not guarenteed to have any specific value and should be ignored.
*
* The caller must have permission to read from the given devhandle, real
* address, which must be an IO address. The argument real address must be a
* size aligned address.
*
* The hypervisor implementation of this function must block access to any
* IO address that the guest does not have explicit permission to access.
*/
#define HV_FAST_PCI_PEEK 0xb6
/* pci_poke()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_POKE
* ARG0: devhandle
* ARG1: real address
* ARG2: size
* ARG3: data
* ARG4: pci_device
* RET0: status
* RET1: error_flag
* ERRORS: EINVAL Invalid devhandle, size, or pci_device
* EBADALIGN Improperly aligned real address
* ENORADDR Bad real address
* ENOACCESS Guest access prohibited
* ENOTSUPPORTED Function is not supported by implementation
*
* Attempt to write data to the IO address given by the given devhandle,
* real address, and size. Size must be 1, 2, 4, or 8. The write is
* performed as a single access operation using the given size. Prior to
* writing the data is size based swapped.
*
* If an error occurs when writing to the given location, do not generate an
* error report, but return a non-zero value in RET1. If the write was
* successful, return zero in RET1.
*
* pci_device describes the configuration address of the device being
* written to. The implementation may safely read from offset 0 with
* the configuration space of the device described by devhandle and
* pci_device in order to guarantee that the write portion of the operation
* completes
*
* Any error that occurs due to the read shall be reported using the normal
* error reporting mechanisms .. the read error is not suppressed.
*
* The caller must have permission to write to the given devhandle, real
* address, which must be an IO address. The argument real address must be a
* size aligned address. The caller must have permission to read from
* the given devhandle, pci_device cofiguration space offset 0.
*
* The hypervisor implementation of this function must block access to any
* IO address that the guest does not have explicit permission to access.
*/
#define HV_FAST_PCI_POKE 0xb7
/* pci_dma_sync()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_DMA_SYNC
* ARG0: devhandle
* ARG1: real address
* ARG2: size
* ARG3: io_sync_direction
* RET0: status
* RET1: #synced
* ERRORS: EINVAL Invalid devhandle or io_sync_direction
* ENORADDR Bad real address
*
* Synchronize a memory region described by the given real address and size,
* for the device defined by the given devhandle using the direction(s)
* defined by the given io_sync_direction. The argument size is the size of
* the memory region in bytes.
*
* Return the actual number of bytes synchronized in the return value #synced,
* which may be less than or equal to the argument size. If the return
* value #synced is less than size, the caller must continue to call this
* function with updated real address and size arguments until the entire
* memory region is synchronized.
*/
#define HV_FAST_PCI_DMA_SYNC 0xb8
/* PCI MSI services. */
#define HV_MSITYPE_MSI32 0x00
#define HV_MSITYPE_MSI64 0x01
#define HV_MSIQSTATE_IDLE 0x00
#define HV_MSIQSTATE_ERROR 0x01
#define HV_MSIQ_INVALID 0x00
#define HV_MSIQ_VALID 0x01
#define HV_MSISTATE_IDLE 0x00
#define HV_MSISTATE_DELIVERED 0x01
#define HV_MSIVALID_INVALID 0x00
#define HV_MSIVALID_VALID 0x01
#define HV_PCIE_MSGTYPE_PME_MSG 0x18
#define HV_PCIE_MSGTYPE_PME_ACK_MSG 0x1b
#define HV_PCIE_MSGTYPE_CORR_MSG 0x30
#define HV_PCIE_MSGTYPE_NONFATAL_MSG 0x31
#define HV_PCIE_MSGTYPE_FATAL_MSG 0x33
#define HV_MSG_INVALID 0x00
#define HV_MSG_VALID 0x01
/* pci_msiq_conf()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSIQ_CONF
* ARG0: devhandle
* ARG1: msiqid
* ARG2: real address
* ARG3: number of entries
* RET0: status
* ERRORS: EINVAL Invalid devhandle, msiqid or nentries
* EBADALIGN Improperly aligned real address
* ENORADDR Bad real address
*
* Configure the MSI queue given by the devhandle and msiqid arguments,
* and to be placed at the given real address and be of the given
* number of entries. The real address must be aligned exactly to match
* the queue size. Each queue entry is 64-bytes long, so f.e. a 32 entry
* queue must be aligned on a 2048 byte real address boundary. The MSI-EQ
* Head and Tail are initialized so that the MSI-EQ is 'empty'.
*
* Implementation Note: Certain implementations have fixed sized queues. In
* that case, number of entries must contain the correct
* value.
*/
#define HV_FAST_PCI_MSIQ_CONF 0xc0
/* pci_msiq_info()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSIQ_INFO
* ARG0: devhandle
* ARG1: msiqid
* RET0: status
* RET1: real address
* RET2: number of entries
* ERRORS: EINVAL Invalid devhandle or msiqid
*
* Return the configuration information for the MSI queue described
* by the given devhandle and msiqid. The base address of the queue
* is returned in ARG1 and the number of entries is returned in ARG2.
* If the queue is unconfigured, the real address is undefined and the
* number of entries will be returned as zero.
*/
#define HV_FAST_PCI_MSIQ_INFO 0xc1
/* pci_msiq_getvalid()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSIQ_GETVALID
* ARG0: devhandle
* ARG1: msiqid
* RET0: status
* RET1: msiqvalid (HV_MSIQ_VALID or HV_MSIQ_INVALID)
* ERRORS: EINVAL Invalid devhandle or msiqid
*
* Get the valid state of the MSI-EQ described by the given devhandle and
* msiqid.
*/
#define HV_FAST_PCI_MSIQ_GETVALID 0xc2
/* pci_msiq_setvalid()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSIQ_SETVALID
* ARG0: devhandle
* ARG1: msiqid
* ARG2: msiqvalid (HV_MSIQ_VALID or HV_MSIQ_INVALID)
* RET0: status
* ERRORS: EINVAL Invalid devhandle or msiqid or msiqvalid
* value or MSI EQ is uninitialized
*
* Set the valid state of the MSI-EQ described by the given devhandle and
* msiqid to the given msiqvalid.
*/
#define HV_FAST_PCI_MSIQ_SETVALID 0xc3
/* pci_msiq_getstate()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSIQ_GETSTATE
* ARG0: devhandle
* ARG1: msiqid
* RET0: status
* RET1: msiqstate (HV_MSIQSTATE_IDLE or HV_MSIQSTATE_ERROR)
* ERRORS: EINVAL Invalid devhandle or msiqid
*
* Get the state of the MSI-EQ described by the given devhandle and
* msiqid.
*/
#define HV_FAST_PCI_MSIQ_GETSTATE 0xc4
/* pci_msiq_getvalid()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSIQ_GETVALID
* ARG0: devhandle
* ARG1: msiqid
* ARG2: msiqstate (HV_MSIQSTATE_IDLE or HV_MSIQSTATE_ERROR)
* RET0: status
* ERRORS: EINVAL Invalid devhandle or msiqid or msiqstate
* value or MSI EQ is uninitialized
*
* Set the state of the MSI-EQ described by the given devhandle and
* msiqid to the given msiqvalid.
*/
#define HV_FAST_PCI_MSIQ_SETSTATE 0xc5
/* pci_msiq_gethead()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSIQ_GETHEAD
* ARG0: devhandle
* ARG1: msiqid
* RET0: status
* RET1: msiqhead
* ERRORS: EINVAL Invalid devhandle or msiqid
*
* Get the current MSI EQ queue head for the MSI-EQ described by the
* given devhandle and msiqid.
*/
#define HV_FAST_PCI_MSIQ_GETHEAD 0xc6
/* pci_msiq_sethead()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSIQ_SETHEAD
* ARG0: devhandle
* ARG1: msiqid
* ARG2: msiqhead
* RET0: status
* ERRORS: EINVAL Invalid devhandle or msiqid or msiqhead,
* or MSI EQ is uninitialized
*
* Set the current MSI EQ queue head for the MSI-EQ described by the
* given devhandle and msiqid.
*/
#define HV_FAST_PCI_MSIQ_SETHEAD 0xc7
/* pci_msiq_gettail()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSIQ_GETTAIL
* ARG0: devhandle
* ARG1: msiqid
* RET0: status
* RET1: msiqtail
* ERRORS: EINVAL Invalid devhandle or msiqid
*
* Get the current MSI EQ queue tail for the MSI-EQ described by the
* given devhandle and msiqid.
*/
#define HV_FAST_PCI_MSIQ_GETTAIL 0xc8
/* pci_msi_getvalid()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSI_GETVALID
* ARG0: devhandle
* ARG1: msinum
* RET0: status
* RET1: msivalidstate
* ERRORS: EINVAL Invalid devhandle or msinum
*
* Get the current valid/enabled state for the MSI defined by the
* given devhandle and msinum.
*/
#define HV_FAST_PCI_MSI_GETVALID 0xc9
/* pci_msi_setvalid()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSI_SETVALID
* ARG0: devhandle
* ARG1: msinum
* ARG2: msivalidstate
* RET0: status
* ERRORS: EINVAL Invalid devhandle or msinum or msivalidstate
*
* Set the current valid/enabled state for the MSI defined by the
* given devhandle and msinum.
*/
#define HV_FAST_PCI_MSI_SETVALID 0xca
/* pci_msi_getmsiq()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSI_GETMSIQ
* ARG0: devhandle
* ARG1: msinum
* RET0: status
* RET1: msiqid
* ERRORS: EINVAL Invalid devhandle or msinum or MSI is unbound
*
* Get the MSI EQ that the MSI defined by the given devhandle and
* msinum is bound to.
*/
#define HV_FAST_PCI_MSI_GETMSIQ 0xcb
/* pci_msi_setmsiq()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSI_SETMSIQ
* ARG0: devhandle
* ARG1: msinum
* ARG2: msitype
* ARG3: msiqid
* RET0: status
* ERRORS: EINVAL Invalid devhandle or msinum or msiqid
*
* Set the MSI EQ that the MSI defined by the given devhandle and
* msinum is bound to.
*/
#define HV_FAST_PCI_MSI_SETMSIQ 0xcc
/* pci_msi_getstate()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSI_GETSTATE
* ARG0: devhandle
* ARG1: msinum
* RET0: status
* RET1: msistate
* ERRORS: EINVAL Invalid devhandle or msinum
*
* Get the state of the MSI defined by the given devhandle and msinum.
* If not initialized, return HV_MSISTATE_IDLE.
*/
#define HV_FAST_PCI_MSI_GETSTATE 0xcd
/* pci_msi_setstate()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSI_SETSTATE
* ARG0: devhandle
* ARG1: msinum
* ARG2: msistate
* RET0: status
* ERRORS: EINVAL Invalid devhandle or msinum or msistate
*
* Set the state of the MSI defined by the given devhandle and msinum.
*/
#define HV_FAST_PCI_MSI_SETSTATE 0xce
/* pci_msg_getmsiq()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSG_GETMSIQ
* ARG0: devhandle
* ARG1: msgtype
* RET0: status
* RET1: msiqid
* ERRORS: EINVAL Invalid devhandle or msgtype
*
* Get the MSI EQ of the MSG defined by the given devhandle and msgtype.
*/
#define HV_FAST_PCI_MSG_GETMSIQ 0xd0
/* pci_msg_setmsiq()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSG_SETMSIQ
* ARG0: devhandle
* ARG1: msgtype
* ARG2: msiqid
* RET0: status
* ERRORS: EINVAL Invalid devhandle, msgtype, or msiqid
*
* Set the MSI EQ of the MSG defined by the given devhandle and msgtype.
*/
#define HV_FAST_PCI_MSG_SETMSIQ 0xd1
/* pci_msg_getvalid()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSG_GETVALID
* ARG0: devhandle
* ARG1: msgtype
* RET0: status
* RET1: msgvalidstate
* ERRORS: EINVAL Invalid devhandle or msgtype
*
* Get the valid/enabled state of the MSG defined by the given
* devhandle and msgtype.
*/
#define HV_FAST_PCI_MSG_GETVALID 0xd2
/* pci_msg_setvalid()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_PCI_MSG_SETVALID
* ARG0: devhandle
* ARG1: msgtype
* ARG2: msgvalidstate
* RET0: status
* ERRORS: EINVAL Invalid devhandle or msgtype or msgvalidstate
*
* Set the valid/enabled state of the MSG defined by the given
* devhandle and msgtype.
*/
#define HV_FAST_PCI_MSG_SETVALID 0xd3
/* Logical Domain Channel services. */
#define LDC_CHANNEL_DOWN 0
#define LDC_CHANNEL_UP 1
#define LDC_CHANNEL_RESETTING 2
/* ldc_tx_qconf()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_TX_QCONF
* ARG0: channel ID
* ARG1: real address base of queue
* ARG2: num entries in queue
* RET0: status
*
* Configure transmit queue for the LDC endpoint specified by the
* given channel ID, to be placed at the given real address, and
* be of the given num entries. Num entries must be a power of two.
* The real address base of the queue must be aligned on the queue
* size. Each queue entry is 64-bytes, so for example, a 32 entry
* queue must be aligned on a 2048 byte real address boundary.
*
* Upon configuration of a valid transmit queue the head and tail
* pointers are set to a hypervisor specific identical value indicating
* that the queue initially is empty.
*
* The endpoint's transmit queue is un-configured if num entries is zero.
*
* The maximum number of entries for each queue for a specific cpu may be
* determined from the machine description. A transmit queue may be
* specified even in the event that the LDC is down (peer endpoint has no
* receive queue specified). Transmission will begin as soon as the peer
* endpoint defines a receive queue.
*
* It is recommended that a guest wait for a transmit queue to empty prior
* to reconfiguring it, or un-configuring it. Re or un-configuring of a
* non-empty transmit queue behaves exactly as defined above, however it
* is undefined as to how many of the pending entries in the original queue
* will be delivered prior to the re-configuration taking effect.
* Furthermore, as the queue configuration causes a reset of the head and
* tail pointers there is no way for a guest to determine how many entries
* have been sent after the configuration operation.
*/
#define HV_FAST_LDC_TX_QCONF 0xe0
/* ldc_tx_qinfo()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_TX_QINFO
* ARG0: channel ID
* RET0: status
* RET1: real address base of queue
* RET2: num entries in queue
*
* Return the configuration info for the transmit queue of LDC endpoint
* defined by the given channel ID. The real address is the currently
* defined real address base of the defined queue, and num entries is the
* size of the queue in terms of number of entries.
*
* If the specified channel ID is a valid endpoint number, but no transmit
* queue has been defined this service will return success, but with num
* entries set to zero and the real address will have an undefined value.
*/
#define HV_FAST_LDC_TX_QINFO 0xe1
/* ldc_tx_get_state()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_TX_GET_STATE
* ARG0: channel ID
* RET0: status
* RET1: head offset
* RET2: tail offset
* RET3: channel state
*
* Return the transmit state, and the head and tail queue pointers, for
* the transmit queue of the LDC endpoint defined by the given channel ID.
* The head and tail values are the byte offset of the head and tail
* positions of the transmit queue for the specified endpoint.
*/
#define HV_FAST_LDC_TX_GET_STATE 0xe2
/* ldc_tx_set_qtail()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_TX_SET_QTAIL
* ARG0: channel ID
* ARG1: tail offset
* RET0: status
*
* Update the tail pointer for the transmit queue associated with the LDC
* endpoint defined by the given channel ID. The tail offset specified
* must be aligned on a 64 byte boundary, and calculated so as to increase
* the number of pending entries on the transmit queue. Any attempt to
* decrease the number of pending transmit queue entires is considered
* an invalid tail offset and will result in an EINVAL error.
*
* Since the tail of the transmit queue may not be moved backwards, the
* transmit queue may be flushed by configuring a new transmit queue,
* whereupon the hypervisor will configure the initial transmit head and
* tail pointers to be equal.
*/
#define HV_FAST_LDC_TX_SET_QTAIL 0xe3
/* ldc_rx_qconf()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_RX_QCONF
* ARG0: channel ID
* ARG1: real address base of queue
* ARG2: num entries in queue
* RET0: status
*
* Configure receive queue for the LDC endpoint specified by the
* given channel ID, to be placed at the given real address, and
* be of the given num entries. Num entries must be a power of two.
* The real address base of the queue must be aligned on the queue
* size. Each queue entry is 64-bytes, so for example, a 32 entry
* queue must be aligned on a 2048 byte real address boundary.
*
* The endpoint's transmit queue is un-configured if num entries is zero.
*
* If a valid receive queue is specified for a local endpoint the LDC is
* in the up state for the purpose of transmission to this endpoint.
*
* The maximum number of entries for each queue for a specific cpu may be
* determined from the machine description.
*
* As receive queue configuration causes a reset of the queue's head and
* tail pointers there is no way for a gues to determine how many entries
* have been received between a preceeding ldc_get_rx_state() API call
* and the completion of the configuration operation. It should be noted
* that datagram delivery is not guarenteed via domain channels anyway,
* and therefore any higher protocol should be resilient to datagram
* loss if necessary. However, to overcome this specific race potential
* it is recommended, for example, that a higher level protocol be employed
* to ensure either retransmission, or ensure that no datagrams are pending
* on the peer endpoint's transmit queue prior to the configuration process.
*/
#define HV_FAST_LDC_RX_QCONF 0xe4
/* ldc_rx_qinfo()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_RX_QINFO
* ARG0: channel ID
* RET0: status
* RET1: real address base of queue
* RET2: num entries in queue
*
* Return the configuration info for the receive queue of LDC endpoint
* defined by the given channel ID. The real address is the currently
* defined real address base of the defined queue, and num entries is the
* size of the queue in terms of number of entries.
*
* If the specified channel ID is a valid endpoint number, but no receive
* queue has been defined this service will return success, but with num
* entries set to zero and the real address will have an undefined value.
*/
#define HV_FAST_LDC_RX_QINFO 0xe5
/* ldc_rx_get_state()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_RX_GET_STATE
* ARG0: channel ID
* RET0: status
* RET1: head offset
* RET2: tail offset
* RET3: channel state
*
* Return the receive state, and the head and tail queue pointers, for
* the receive queue of the LDC endpoint defined by the given channel ID.
* The head and tail values are the byte offset of the head and tail
* positions of the receive queue for the specified endpoint.
*/
#define HV_FAST_LDC_RX_GET_STATE 0xe6
/* ldc_rx_set_qhead()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_RX_SET_QHEAD
* ARG0: channel ID
* ARG1: head offset
* RET0: status
*
* Update the head pointer for the receive queue associated with the LDC
* endpoint defined by the given channel ID. The head offset specified
* must be aligned on a 64 byte boundary, and calculated so as to decrease
* the number of pending entries on the receive queue. Any attempt to
* increase the number of pending receive queue entires is considered
* an invalid head offset and will result in an EINVAL error.
*
* The receive queue may be flushed by setting the head offset equal
* to the current tail offset.
*/
#define HV_FAST_LDC_RX_SET_QHEAD 0xe7
/* LDC Map Table Entry. Each slot is defined by a translation table
* entry, as specified by the LDC_MTE_* bits below, and a 64-bit
* hypervisor invalidation cookie.
*/
#define LDC_MTE_PADDR 0x0fffffffffffe000 /* pa[55:13] */
#define LDC_MTE_COPY_W 0x0000000000000400 /* copy write access */
#define LDC_MTE_COPY_R 0x0000000000000200 /* copy read access */
#define LDC_MTE_IOMMU_W 0x0000000000000100 /* IOMMU write access */
#define LDC_MTE_IOMMU_R 0x0000000000000080 /* IOMMU read access */
#define LDC_MTE_EXEC 0x0000000000000040 /* execute */
#define LDC_MTE_WRITE 0x0000000000000020 /* read */
#define LDC_MTE_READ 0x0000000000000010 /* write */
#define LDC_MTE_SZALL 0x000000000000000f /* page size bits */
#define LDC_MTE_SZ16GB 0x0000000000000007 /* 16GB page */
#define LDC_MTE_SZ2GB 0x0000000000000006 /* 2GB page */
#define LDC_MTE_SZ256MB 0x0000000000000005 /* 256MB page */
#define LDC_MTE_SZ32MB 0x0000000000000004 /* 32MB page */
#define LDC_MTE_SZ4MB 0x0000000000000003 /* 4MB page */
#define LDC_MTE_SZ512K 0x0000000000000002 /* 512K page */
#define LDC_MTE_SZ64K 0x0000000000000001 /* 64K page */
#define LDC_MTE_SZ8K 0x0000000000000000 /* 8K page */
#ifndef __ASSEMBLY__
struct ldc_mtable_entry {
unsigned long mte;
unsigned long cookie;
};
#endif
/* ldc_set_map_table()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_SET_MAP_TABLE
* ARG0: channel ID
* ARG1: table real address
* ARG2: num entries
* RET0: status
*
* Register the MTE table at the given table real address, with the
* specified num entries, for the LDC indicated by the given channel
* ID.
*/
#define HV_FAST_LDC_SET_MAP_TABLE 0xea
/* ldc_get_map_table()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_GET_MAP_TABLE
* ARG0: channel ID
* RET0: status
* RET1: table real address
* RET2: num entries
*
* Return the configuration of the current mapping table registered
* for the given channel ID.
*/
#define HV_FAST_LDC_GET_MAP_TABLE 0xeb
#define LDC_COPY_IN 0
#define LDC_COPY_OUT 1
/* ldc_copy()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_COPY
* ARG0: channel ID
* ARG1: LDC_COPY_* direction code
* ARG2: target real address
* ARG3: local real address
* ARG4: length in bytes
* RET0: status
* RET1: actual length in bytes
*/
#define HV_FAST_LDC_COPY 0xec
#define LDC_MEM_READ 1
#define LDC_MEM_WRITE 2
#define LDC_MEM_EXEC 4
/* ldc_mapin()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_MAPIN
* ARG0: channel ID
* ARG1: cookie
* RET0: status
* RET1: real address
* RET2: LDC_MEM_* permissions
*/
#define HV_FAST_LDC_MAPIN 0xed
/* ldc_unmap()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_UNMAP
* ARG0: real address
* RET0: status
*/
#define HV_FAST_LDC_UNMAP 0xee
/* ldc_revoke()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_LDC_REVOKE
* ARG0: channel ID
* ARG1: cookie
* ARG2: ldc_mtable_entry cookie
* RET0: status
*/
#define HV_FAST_LDC_REVOKE 0xef
#ifndef __ASSEMBLY__
extern unsigned long sun4v_ldc_tx_qconf(unsigned long channel,
unsigned long ra,
unsigned long num_entries);
extern unsigned long sun4v_ldc_tx_qinfo(unsigned long channel,
unsigned long *ra,
unsigned long *num_entries);
extern unsigned long sun4v_ldc_tx_get_state(unsigned long channel,
unsigned long *head_off,
unsigned long *tail_off,
unsigned long *chan_state);
extern unsigned long sun4v_ldc_tx_set_qtail(unsigned long channel,
unsigned long tail_off);
extern unsigned long sun4v_ldc_rx_qconf(unsigned long channel,
unsigned long ra,
unsigned long num_entries);
extern unsigned long sun4v_ldc_rx_qinfo(unsigned long channel,
unsigned long *ra,
unsigned long *num_entries);
extern unsigned long sun4v_ldc_rx_get_state(unsigned long channel,
unsigned long *head_off,
unsigned long *tail_off,
unsigned long *chan_state);
extern unsigned long sun4v_ldc_rx_set_qhead(unsigned long channel,
unsigned long head_off);
extern unsigned long sun4v_ldc_set_map_table(unsigned long channel,
unsigned long ra,
unsigned long num_entries);
extern unsigned long sun4v_ldc_get_map_table(unsigned long channel,
unsigned long *ra,
unsigned long *num_entries);
extern unsigned long sun4v_ldc_copy(unsigned long channel,
unsigned long dir_code,
unsigned long tgt_raddr,
unsigned long lcl_raddr,
unsigned long len,
unsigned long *actual_len);
extern unsigned long sun4v_ldc_mapin(unsigned long channel,
unsigned long cookie,
unsigned long *ra,
unsigned long *perm);
extern unsigned long sun4v_ldc_unmap(unsigned long ra);
extern unsigned long sun4v_ldc_revoke(unsigned long channel,
unsigned long cookie,
unsigned long mte_cookie);
#endif
/* Performance counter services. */
#define HV_PERF_JBUS_PERF_CTRL_REG 0x00
#define HV_PERF_JBUS_PERF_CNT_REG 0x01
#define HV_PERF_DRAM_PERF_CTRL_REG_0 0x02
#define HV_PERF_DRAM_PERF_CNT_REG_0 0x03
#define HV_PERF_DRAM_PERF_CTRL_REG_1 0x04
#define HV_PERF_DRAM_PERF_CNT_REG_1 0x05
#define HV_PERF_DRAM_PERF_CTRL_REG_2 0x06
#define HV_PERF_DRAM_PERF_CNT_REG_2 0x07
#define HV_PERF_DRAM_PERF_CTRL_REG_3 0x08
#define HV_PERF_DRAM_PERF_CNT_REG_3 0x09
/* get_perfreg()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_GET_PERFREG
* ARG0: performance reg number
* RET0: status
* RET1: performance reg value
* ERRORS: EINVAL Invalid performance register number
* ENOACCESS No access allowed to performance counters
*
* Read the value of the given DRAM/JBUS performance counter/control register.
*/
#define HV_FAST_GET_PERFREG 0x100
/* set_perfreg()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_SET_PERFREG
* ARG0: performance reg number
* ARG1: performance reg value
* RET0: status
* ERRORS: EINVAL Invalid performance register number
* ENOACCESS No access allowed to performance counters
*
* Write the given performance reg value to the given DRAM/JBUS
* performance counter/control register.
*/
#define HV_FAST_SET_PERFREG 0x101
/* MMU statistics services.
*
* The hypervisor maintains MMU statistics and privileged code provides
* a buffer where these statistics can be collected. It is continually
* updated once configured. The layout is as follows:
*/
#ifndef __ASSEMBLY__
struct hv_mmu_statistics {
unsigned long immu_tsb_hits_ctx0_8k_tte;
unsigned long immu_tsb_ticks_ctx0_8k_tte;
unsigned long immu_tsb_hits_ctx0_64k_tte;
unsigned long immu_tsb_ticks_ctx0_64k_tte;
unsigned long __reserved1[2];
unsigned long immu_tsb_hits_ctx0_4mb_tte;
unsigned long immu_tsb_ticks_ctx0_4mb_tte;
unsigned long __reserved2[2];
unsigned long immu_tsb_hits_ctx0_256mb_tte;
unsigned long immu_tsb_ticks_ctx0_256mb_tte;
unsigned long __reserved3[4];
unsigned long immu_tsb_hits_ctxnon0_8k_tte;
unsigned long immu_tsb_ticks_ctxnon0_8k_tte;
unsigned long immu_tsb_hits_ctxnon0_64k_tte;
unsigned long immu_tsb_ticks_ctxnon0_64k_tte;
unsigned long __reserved4[2];
unsigned long immu_tsb_hits_ctxnon0_4mb_tte;
unsigned long immu_tsb_ticks_ctxnon0_4mb_tte;
unsigned long __reserved5[2];
unsigned long immu_tsb_hits_ctxnon0_256mb_tte;
unsigned long immu_tsb_ticks_ctxnon0_256mb_tte;
unsigned long __reserved6[4];
unsigned long dmmu_tsb_hits_ctx0_8k_tte;
unsigned long dmmu_tsb_ticks_ctx0_8k_tte;
unsigned long dmmu_tsb_hits_ctx0_64k_tte;
unsigned long dmmu_tsb_ticks_ctx0_64k_tte;
unsigned long __reserved7[2];
unsigned long dmmu_tsb_hits_ctx0_4mb_tte;
unsigned long dmmu_tsb_ticks_ctx0_4mb_tte;
unsigned long __reserved8[2];
unsigned long dmmu_tsb_hits_ctx0_256mb_tte;
unsigned long dmmu_tsb_ticks_ctx0_256mb_tte;
unsigned long __reserved9[4];
unsigned long dmmu_tsb_hits_ctxnon0_8k_tte;
unsigned long dmmu_tsb_ticks_ctxnon0_8k_tte;
unsigned long dmmu_tsb_hits_ctxnon0_64k_tte;
unsigned long dmmu_tsb_ticks_ctxnon0_64k_tte;
unsigned long __reserved10[2];
unsigned long dmmu_tsb_hits_ctxnon0_4mb_tte;
unsigned long dmmu_tsb_ticks_ctxnon0_4mb_tte;
unsigned long __reserved11[2];
unsigned long dmmu_tsb_hits_ctxnon0_256mb_tte;
unsigned long dmmu_tsb_ticks_ctxnon0_256mb_tte;
unsigned long __reserved12[4];
};
#endif
/* mmustat_conf()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMUSTAT_CONF
* ARG0: real address
* RET0: status
* RET1: real address
* ERRORS: ENORADDR Invalid real address
* EBADALIGN Real address not aligned on 64-byte boundary
* EBADTRAP API not supported on this processor
*
* Enable MMU statistic gathering using the buffer at the given real
* address on the current virtual CPU. The new buffer real address
* is given in ARG1, and the previously specified buffer real address
* is returned in RET1, or is returned as zero for the first invocation.
*
* If the passed in real address argument is zero, this will disable
* MMU statistic collection on the current virtual CPU. If an error is
* returned then no statistics are collected.
*
* The buffer contents should be initialized to all zeros before being
* given to the hypervisor or else the statistics will be meaningless.
*/
#define HV_FAST_MMUSTAT_CONF 0x102
/* mmustat_info()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_MMUSTAT_INFO
* RET0: status
* RET1: real address
* ERRORS: EBADTRAP API not supported on this processor
*
* Return the current state and real address of the currently configured
* MMU statistics buffer on the current virtual CPU.
*/
#define HV_FAST_MMUSTAT_INFO 0x103
#ifndef __ASSEMBLY__
extern unsigned long sun4v_mmustat_conf(unsigned long ra, unsigned long *orig_ra);
extern unsigned long sun4v_mmustat_info(unsigned long *ra);
#endif
/* NCS crypto services */
/* ncs_request() sub-function numbers */
#define HV_NCS_QCONF 0x01
#define HV_NCS_QTAIL_UPDATE 0x02
#ifndef __ASSEMBLY__
struct hv_ncs_queue_entry {
/* MAU Control Register */
unsigned long mau_control;
#define MAU_CONTROL_INV_PARITY 0x0000000000002000
#define MAU_CONTROL_STRAND 0x0000000000001800
#define MAU_CONTROL_BUSY 0x0000000000000400
#define MAU_CONTROL_INT 0x0000000000000200
#define MAU_CONTROL_OP 0x00000000000001c0
#define MAU_CONTROL_OP_SHIFT 6
#define MAU_OP_LOAD_MA_MEMORY 0x0
#define MAU_OP_STORE_MA_MEMORY 0x1
#define MAU_OP_MODULAR_MULT 0x2
#define MAU_OP_MODULAR_REDUCE 0x3
#define MAU_OP_MODULAR_EXP_LOOP 0x4
#define MAU_CONTROL_LEN 0x000000000000003f
#define MAU_CONTROL_LEN_SHIFT 0
/* Real address of bytes to load or store bytes
* into/out-of the MAU.
*/
unsigned long mau_mpa;
/* Modular Arithmetic MA Offset Register. */
unsigned long mau_ma;
/* Modular Arithmetic N Prime Register. */
unsigned long mau_np;
};
struct hv_ncs_qconf_arg {
unsigned long mid; /* MAU ID, 1 per core on Niagara */
unsigned long base; /* Real address base of queue */
unsigned long end; /* Real address end of queue */
unsigned long num_ents; /* Number of entries in queue */
};
struct hv_ncs_qtail_update_arg {
unsigned long mid; /* MAU ID, 1 per core on Niagara */
unsigned long tail; /* New tail index to use */
unsigned long syncflag; /* only SYNCFLAG_SYNC is implemented */
#define HV_NCS_SYNCFLAG_SYNC 0x00
#define HV_NCS_SYNCFLAG_ASYNC 0x01
};
#endif
/* ncs_request()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_NCS_REQUEST
* ARG0: NCS sub-function
* ARG1: sub-function argument real address
* ARG2: size in bytes of sub-function argument
* RET0: status
*
* The MAU chip of the Niagara processor is not directly accessible
* to privileged code, instead it is programmed indirectly via this
* hypervisor API.
*
* The interfaces defines a queue of MAU operations to perform.
* Privileged code registers a queue with the hypervisor by invoking
* this HVAPI with the HV_NCS_QCONF sub-function, which defines the
* base, end, and number of entries of the queue. Each queue entry
* contains a MAU register struct block.
*
* The privileged code then proceeds to add entries to the queue and
* then invoke the HV_NCS_QTAIL_UPDATE sub-function. Since only
* synchronous operations are supported by the current hypervisor,
* HV_NCS_QTAIL_UPDATE will run all the pending queue entries to
* completion and return HV_EOK, or return an error code.
*
* The real address of the sub-function argument must be aligned on at
* least an 8-byte boundary.
*
* The tail argument of HV_NCS_QTAIL_UPDATE is an index, not a byte
* offset, into the queue and must be less than or equal the 'num_ents'
* argument given in the HV_NCS_QCONF call.
*/
#define HV_FAST_NCS_REQUEST 0x110
#ifndef __ASSEMBLY__
extern unsigned long sun4v_ncs_request(unsigned long request,
unsigned long arg_ra,
unsigned long arg_size);
#endif
#define HV_FAST_FIRE_GET_PERFREG 0x120
#define HV_FAST_FIRE_SET_PERFREG 0x121
/* Function numbers for HV_CORE_TRAP. */
#define HV_CORE_SET_VER 0x00
#define HV_CORE_PUTCHAR 0x01
#define HV_CORE_EXIT 0x02
#define HV_CORE_GET_VER 0x03
/* Hypervisor API groups for use with HV_CORE_SET_VER and
* HV_CORE_GET_VER.
*/
#define HV_GRP_SUN4V 0x0000
#define HV_GRP_CORE 0x0001
#define HV_GRP_INTR 0x0002
#define HV_GRP_SOFT_STATE 0x0003
#define HV_GRP_PCI 0x0100
#define HV_GRP_LDOM 0x0101
#define HV_GRP_SVC_CHAN 0x0102
#define HV_GRP_NCS 0x0103
#define HV_GRP_NIAG_PERF 0x0200
#define HV_GRP_FIRE_PERF 0x0201
#define HV_GRP_DIAG 0x0300
#ifndef __ASSEMBLY__
extern unsigned long sun4v_get_version(unsigned long group,
unsigned long *major,
unsigned long *minor);
extern unsigned long sun4v_set_version(unsigned long group,
unsigned long major,
unsigned long minor,
unsigned long *actual_minor);
extern int sun4v_hvapi_register(unsigned long group, unsigned long major,
unsigned long *minor);
extern void sun4v_hvapi_unregister(unsigned long group);
extern int sun4v_hvapi_get(unsigned long group,
unsigned long *major,
unsigned long *minor);
extern void sun4v_hvapi_init(void);
#endif
#endif /* !(_SPARC64_HYPERVISOR_H) */
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