Editing HV Syscall Reference

[[Category:Software]]
= HV Syscalls =

NOTE: Update with graf's work. It'll probably fill in some of the undocumented functions.

=== lv1_allocate_memory ===

Create a memory region in the Hypervisor Virtual Address Space (vas)

===== Kernel Call =====

 result = lv1_allocate_memory( /*IN*/ size, page_size_exp, 0, flags, /*OUT*/ &addr, &muid );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|size - of the region to allocate, must be a multiple of page_size
|-
|R4
|page_size_exp - where required page_size = 2 ^ page_size_exp
|-
|R5
|0 - Unknown, see notes
|-
|R6
|flags - (from linux/include/asm-powerpc/lv1call.h)<br> 
bit 63: transferability: TF_NO = 0×00, TF_YES = 0×01<br>
bit 62: destruction_scheme: DS_NO_CONNECTIONS = 0×00, DS_ANYTIME = 0×02<br>
bit 61: fail or alternative: FA_FAIL = 0×00, FA_ALTERNATIVE = 0×04<br>
bit 60: need LPAR address 0: ADDR_ANY = 0×00, ADDR_0 = 0×08<br>
function unknown.
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, LV1_RESOURCE_SHORTAGE (-2), LV1_NO_ENTRY (-6), LV1_DUPLICATE_ENTRY (-7)
|-
|R4
|addr - LPAR Address of region
|-
|R5
|muid - Unknown, unused by Kernel
|}

Notes:

page_size_exp takes values of 12 (page_size = 4K) to 21 (page_size = 2M) before LV1_RESOURCE_SHORTAGE (-2) is returned under a fully booted Linux OS. Higher values (24, page_size = 16M) can be found in the actual kernel source and can presumably be made before the OS has fully booted. page_size_exp values below 12 cause a return status of LV1_ILLEGAL_PARAMETER_VALUE (-17).

Input R5 was speculated to be the initialization value for the allocated region, but appears not to be the case. Values other than 0 or 1 appear to return a status of LV1_NO_ENTRY (-6), though a valid value of page_size_exp appears to be checked first (-17 is returned for invalid values of page_size_exp, regardless of the value of R5).

Allocations with flags = 0×00, 0×01, 0×02, 0×03 and 0×04 were successful though the effects of the flags could not be tested at this point. Allocations with flags >= 0×400 return LV1_ILLEGAL_PARAMETER_VALUE.

Initial tests allocating memory with flags = 0×08 (ADDR_0, presumably request physical address rather than logical partition address) result in a status of LV1_DUPLICATE_ENTRY (-7). This and the previous return value of -6 suggest an association with a database of some kind (repository values or memory maps?). It appears that some form of allocation may be taking place as LV1_ILLEGAL_PARAMETER_VALUE and LV1_RESOURCE_SHORTAGE are reported for invalid input parameters, rather than LV1_DUPLICATE_ENTRY.

For all successful allocations so far, output muid (R5) = 1
----
=== lv1_write_htab_entry ===

Write an entry to the hash page table.

===== Kernel Call =====

 result = lv1_write_htab_entry( /*IN*/ vas_id, slot, va, pa );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|vas_id - virtual address space id (0 for current)
|-
|R4
|slot - table slot to write entry to
|-
|R5
|va - first half of PTE
|-
|R6
|pa - second half of PTE, except RPN is replaced with LPAR address
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|}
----
=== lv1_construct_virtual_address_space ===

Construct a PPE virtual address space.

===== Kernel Call =====

 result = lv1_construct_virtual_address_space( /*IN*/ htab_size, number_of_sizes, page_sizes, /*OUT*/ &vas_id, &act_htab_size );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|htab_size - must be 18, 19 or 20 (256KB, 512KB or 1MB)
|-
|R4
|number_of_sizes - How many page sizes are specified in page_sizes
|-
|R5
|page_sizes - see notes
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|vas_id - virtual address space id
|-
|R5
|act_htab_size - actual hash table size?
|}

Notes:

Page sizes are specified as the power of two for the desired sizes. Each power of two is stored as an 8 bit field in page_sizes, starting from the MSB.

The “pages_sizes” parameter is set in “mm.c” using the following function:
 page_sizes = make_page_sizes(PAGE_SHIFT_16M, PAGE_SHIFT_64K);
 
 static unsigned long make_page_sizes(unsigned long a, unsigned long b)
 {
 	return (a << 56) | (b << 48);
 }
----
=== lv1_invalidate_htab_entries ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_invalidate_htab_entries( /*IN*/ p1, p2, p3, p4, p5 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
|R6
|p4 - Unknown
|-
|R7
|p5 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|}
----
=== lv1_get_virtual_address_space_id_of_ppe ===

Returns the virtual address space id of the PPE.

===== Kernel Call =====

 result = lv1_get_virtual_address_space_id_of_ppe( /*IN*/ ppe_id , /*OUT*/ &vas_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|PPE id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|status: 0 = LV1_SUCCESS
|-
|R4
|vas_id - virtual address space id of the PPE
|-
|R5
|htab_size_log2 - 18, 19 or 20 (256KB, 512KB or 1MB)
|-
|R6
|number_of_sizes - How many page sizes are specified in page_sizes
|-
|R7
|page_sizes - see lv1_construct_virtual_address_space
|}

Notes:

Regardless of the ppe_id, when called from kernel module init function, vas_id always seems to be 11.
----

=== lv1_query_logical_partition_address_region_info ===

Retrieve address region information for the specified logical partition address region.

===== Kernel Call =====

 result = lv1_query_logical_partition_address_region_info( /*IN*/ 0,
    /*OUT*/ &start_address, &size, &access_right, &max_page_size, &flags);

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|0 - logical partition address region (lpar)
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|status: 0 = LV1_SUCCESS
|-
|R4
|start_address - start address of logical partition address region
|-
|R5
|size - size of logical partition address region
|-
|R6
|access_right - ?
|-
|R7
|max_page_size - maximum page size of logical partition address region? or order of the allocation?
|-
|R8
|flags - ?
|}

Notes:

Only the “max_page_size” parameter is currently used by the Kernel, in “mm.c”

===== Test Results =====
{| class="wikitable"
|-
!Register
!Hex
!Decimal
!Comment
|-
|R3
|0x00000000
|(0)
|value does not seem to effect result
|-
! colspan="4" | Outputs
|-
|R3
|0×00000000
|(0)
|LV1_SUCCESS
|-
|R4
|0×00000000
|(0)
|start_address
|-
|R5
|0×08000000
|(134217728)
|size - 128 Mb
|-
|R6
|0×00000003
|(3)
|access_right
|-
|R7
|0x0000001b
|(27)
|max_page_size
|-
|R8
|0×00000008
|(8)
|flags
|}

This suggests lpar 0 is a special lpar representing the first 128MB of RAM that are always available at boot time. In this case, max_page_size seems to correspond to the order of the allocation (2**27 = 128 MB). The meaning of access_right and flags is unknown.

Also works on a lpar obtained from [[HV_Syscall_Reference#lv1_allocate_memory|lv1_allocate_memory]], for example

 lv1_allocate_memory(4096 /* size */, 12 /* page size */, 0, 0, &lpar, &muid);
 lv1_query_logical_partition_address_region_info(lpar, &start_address, &size, &access_right, &max_page_size, &flags);
returns:
{| class="wikitable"
|-
!Register
!Hex
!Decimal
!Comment
|-
|R3
|0x30000001f00
|(3298534891264)
|lpar obtained from lv1_allocate_memory
|-
! colspan="4" | Outputs
|-
|R3
|0×00000000
|(0)
|LV1_SUCCESS
|-
|R4
|0×30000001f00
|(0)
|start_address (same as input lpar)
|-
|R5
|0×00001000
|(4096)
|size - 4kB
|-
|R6
|0×00000003
|(3)
|access_right
|-
|R7
|0x0000000c
|(12)
|max_page_size
|-
|R8
|0×00000000
|(0)
|flags
|}
----
=== lv1_select_virtual_address_space ===

Select an alternative virtual address space.

===== Kernel Call =====

 result = lv1_select_virtual_address_space( /*IN*/ vas_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|vas_id - virtual address space id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|}

Notes:

In “mm.c” When destructing a virtual address space, a call to select address space 0 (default?) is performed first.

Calling lv1_select_virtual_address_space(0) from a kernel module init function causes the PS3 to hang.
----
=== lv1_undocumented_function_8 ===

Returns current HV uptime. (NOTE: Use graf's work here)

----
=== lv1_pause ===

Called during the Kernel idle loop - puts the PPE thread into an inactive state.

===== Kernel Call =====

 result = lv1_pause( /*IN*/ mode );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|mode: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|status: 0 = LV1_SUCCESS, -17 = LV1_ILLEGAL_PARAMETER_VALUE
|}

Notes:

LV1_ILLEGAL_PARAMETER_VALUE is returned for values of “mode” other than 0 or 1.

Comment from setup.c
 /*
 * lv1_pause() puts the PPE thread into inactive state until an
 * irq on an unmasked plug exists. MSR[EE] has no effect.
 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
 */
----
=== lv1_destruct_virtual_address_space ===

Destruct a virtual address space.

===== Kernel Call =====

 lv1_destruct_virtual_address_space( /*IN*/ vas_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|vas_id - virtual address space id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|}

Notes:

Called with 0 in R3 crashes my PS3. Light turns red, appears to be off
----
=== lv1_configure_irq_state_bitmap ===

Register the address of a HV plug-outlet bitmap with the Hypervisor.

===== Kernel Call =====

 result = lv1_configure_irq_state_bitmap( /*IN*/ ppe_id, cpu_id, bmp_addr );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ppe_id - PPE id
|-
|R4
|cpu_id - PPE CPU id
|-
|R5
|bmp_addr - lpar address of state bitmap
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|}

Notes:

Comment from interrupt.c:

 /**
 * The HV mantains per SMT thread mappings of HV outlet to HV plug on
 * behalf of the guest.  These mappings are implemented as 256 bit guest
 * supplied bitmaps indexed by plug number.  The addresses of the bitmaps
 * are registered with the HV through lv1_configure_irq_state_bitmap().
 * The HV requires that the 512 bits of status + mask not cross a page
 * boundary.  PS3_BMP_MINALIGN is used to define this minimal 64 byte
 * alignment.
 *
 * The HV supports 256 plugs per thread, assigned as {0..255}, for a total
 * of 512 plugs supported on a processor.  To simplify the logic this
 * implementation equates HV plug value to Linux virq value, constrains each
 * interrupt to have a system wide unique plug number, and limits the range
 * of the plug values to map into the first dword of the bitmaps.  This
 * gives a usable range of plug values of  {NUM_ISA_INTERRUPTS..63}.  Note
 * that there is no constraint on how many in this set an individual thread
 * can acquire.
 */
----
=== lv1_connect_irq_plug_ext ===

Connect a HV outlet to a CPU and virtual irq.

===== Kernel Call =====

 result = lv1_connect_irq_plug_ext( /*IN*/ ppe_id, cpu_id, virq, outlet, 0 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ppe_id - PPE id
|-
|R4
|cpu_id - PPE CPU id
|-
|R5
|virq - virtual irq
|-
|R6
|outlet - HV outlet
|-
|R7
|0 - unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|}
----
=== lv1_release_memory ===

Releases a previously allocated memory region. Return code is not checked.

===== Kernel Call =====

 lv1_release_memory( /*IN*/ base );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|base - base address of memory region
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status??
|}
----
=== lv1_put_iopte ===

Put an io page table entry.

===== Kernel Call =====

 result = lv1_put_iopte( /*IN*/ ioas_id, ioif_addr, lpar_addr, io_id, flags );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ioas_id - io address space id
|-
|R4
|ioif_addr - io interface address
|-
|R5
|lpar_addr - logical partition address
|-
|R6
|io_id - io id
|-
|R7
|flags - see notes
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status??
|}

Notes:

Code taken from kboot-10\dl\linux-2.6.16\sound\powerpc\snd_ps3pf.c (kboot-20061208)

 ret64 = lv1_put_iopte(0, /* io address space id */
    ioif_map_info_array[current_segment].ioif_addr + current_page * IO_PAGESIZE, /* ioif addr */
    p_to_lp(current_paddr), /* lpar addr */
    PS3PF_AUDIO_IOID, IOPTE_READONLY | IOPTE_COHERENT | IOPTE_STRICT_ORDER);
----
=== lv1_disconnect_irq_plug_ext ===

Disconnect a virtual irq from its HV outlet.

===== Kernel Call =====

 lv1_disconnect_irq_plug_ext( /*IN*/ ppe_id, cpu_id, virq );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ppe_id - PPE id
|-
|R4
|cpu_id - PPE CPU id
|-
|R5
|virq - virtual irq
|-
|R7
|flags - see notes
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|}
----
=== lv1_construct_event_receive_port ===

Creates an outlet that can be used with a virtual irq to receive system events.

===== Kernel Call =====

 result = lv1_construct_event_receive_port( /*OUT*/ &outlet );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|outlet - event outlet
|}
----
=== lv1_destruct_event_receive_port ===

Destruct a previously constructed event receiving port.

===== Kernel Call =====

 result = lv1_destruct_event_receive_port( /*IN*/ outlet );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|outlet - event outlet
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|}
----
=== lv1_send_event_locally ===

Signal the specified event.

===== Kernel Call =====

 result = lv1_send_event_locally( /*IN*/ outlet );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|outlet - event outlet
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|}
----
=== lv1_detect_pending_interrupts ===

Not used in current kernel. Used in ps2_gxemu.

===== Abstract Call =====

 result = lv1_detect_pending_interrupts( /*IN*/ p1, /*OUT*/ &v1, &v2, &v3, &v4 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - unknown (only 0 value is supported)
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status
|-
|R4
|v1 - irq_bitmap[0]
|-
|R5
|v2 - irq_bitmap[1]
|-
|R6
|v3 - irq_bitmap[2]
|-
|R7
|v4 - irq_bitmap[3]
|-
|}

Notes:<br>
Return 256 bit irq bitmap for previously connected irq plugs (using lv1_connect_irq_plug).<br>
Info taken from kboot-10\dl\linux-2.6.16\include\asm-powerpc\lv1calltab.h (kboot-20061208)
----

=== lv1_end_of_interrupt ===

Indicate the end of an interrupt handler has been reached.

===== kboot Call =====

 result = lv1_end_of_interrupt( /*IN*/ irq );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|irq - interrupt number
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Notes:

Comment in kboot-10\dl\linux-2.6.16\arch\powerpc\platforms\ps3pf\pic.c (kboot-20061208)
 /* 
  lv1_end_of_interrupt must be called at end_irq. 
  Some lv1 drivers clear irq status in it.
 */
----
=== lv1_connect_irq_plug ===

Bind a virtual interrupt to a CPU.

===== kboot Call =====

 result = lv1_connect_irq_plug( /*IN*/ virq, hwirq );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|virq - virtual interrupt
|-
|R4
|hwirq - hardware interrupt
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Notes:

Info taken from kboot-10/dl/linux-2.6.16/patches/cell-support/2.6.19-rc6-arnd1/ps3-support/ps3-interrupt.patch (kboot-20061208)
----
=== lv1_disconnect_irq_plug ===

Unbind a virtual interrupt from a CPU.

===== kboot Call =====

 lv1_disconnect_irq_plug( /*IN*/ virq );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|virq - virtual interrupt
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}

Notes:

Info taken from kboot-10/dl/linux-2.6.16/patches/cell-support/2.6.19-rc6-arnd1/ps3-support/ps3-interrupt.patch (kboot-20061208)
----
=== lv1_end_of_interrupt_ext ===

Indicate that the end of an interrupt handler has been reached.

===== Kernel Call =====

 lv1_end_of_interrupt_ext( /*IN*/ ppe_id, cpu_id, virq );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ppe_id - PPE id
|-
|R4
|cpu_id - PPE CPU id
|-
|R5
|virq - virtual irq
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_did_update_interrupt_mask ===

Indicate that CPU interrupt mask has been updated.

===== Kernel Call =====

 lv1_did_update_interrupt_mask( /*IN*/ ppe_id, cpu_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ppe_id - PPE id
|-
|R4
|cpu_id - PPE CPU id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_shutdown_logical_partition ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_shutdown_logical_partition( /*IN*/ p1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - shutdown command (see notes)
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}

Notes:

Comment from kboot-10/dl/linux-2.6.16/include/asm-powerpc/lv1call.h (kboot-20061208)
 /* values for lv1_shutdown_logical_partition */
 #define LV1_SHUTDOWN_LP_HALT		1
 #define LV1_SHUTDOWN_LP_POWER_OFF	2
 #define LV1_SHUTDOWN_LP_RESTART	3
----
=== lv1_destruct_logical_spe ===

Destructs a logical SPE.

===== Kernel Call =====

 result = lv1_destruct_logical_spe( /*IN*/ spe_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|spe_id - spe id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_construct_logical_spe ===

Constructs a logical SPE.

===== Kernel Call =====

 status = lv1_construct_logical_spe( /*IN*/ PAGE_SHIFT, PAGE_SHIFT, PAGE_SHIFT, PAGE_SHIFT, PAGE_SHIFT, vas_id, SPE_TYPE_LOGICAL,
 		/*OUT*/ &priv2_addr, &problem_phys, &local_store_phys, &unused, &shadow_addr, &spe_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|PAGE_SHIFT
|-
|R4
|PAGE_SHIFT
|-
|R5
|PAGE_SHIFT
|-
|R6
|PAGE_SHIFT
|-
|R7
|PAGE_SHIFT
|-
|R8
|vas_id - virtual address space id
|-
|R9
|SPE_TYPE_LOGICAL (0)
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|priv2_addr - lpar address of spe priv2 area
|-
|R5
|problem_phys - lpar address of spu_problem area
|-
|R6
|local_store_phys - lpar address of spu local storage
|-
|R7
|unused
|-
|R8
|shadow_addr - lpar address of spe register shadow area
|-
|R9
|spe_id - logical spe id
|-
|}

Notes:

R7 out parameter was referred to in a previous codebase as “ctxt_addr”.

===== Test Results =====
{| class="wikitable"
|-
!priv2_addr
!problem_phys
!local_store_phys
!unused
!shadow_addr
!spe_id
|-
|0x4c0000660000
|0x4c0000640000
|0x4c0000600000
|0×0
|0x30000000d000
|11
|-
|0x4c0000760000
|0x4c0000740000
|0x4c0000700000
|0×0
|0x30000000f000
|15
|-
|0x4c0000860000
|0x4c0000840000
|0x4c0000800000
|0×0
|0×300000011000
|19
|-
|0x4c0000960000
|0x4c0000940000
|0x4c0000900000
|0×0
|0×300000013000
|23
|-
|0x4c0000a60000
|0x4c0000a40000
|0x4c0000a00000
|0×0
|0×300000015000
|27
|-
|0x4c0000b60000
|0x4c0000b40000
|0x4c0000b00000
|0×0
|0×300000017000
|31
|}

For each entry, only two separate lpar are allocated by the hypervisor. Indeed, calling lv1_query_logical_partition_address_region_info on priv2_addr, problem_phys, local_store_phys and shadow_addr for the first entry returns the following info:

{| class="wikitable"
|-
!lpar
!start_address
!size
!access_right
!max_page_size
!flags
!comment
|-
0x4c0000660000
|0x4c0000600000
|524288
|0×3 (RW)
|12
|0xa000000000000000
|SPU MMIO lpar, privilege state 2 region (128kB)
|-
|0x4c0000640000
|0x4c0000600000
|524288
|0×3 (RW)
|12
|0xa000000000000000
|SPU MMIO lpar, problem state region (128kB)
|-
|0x4c0000600000
|0x4c0000600000
|524288
|0×3 (RW)
|12
|0xa000000000000000
|SPU MMIO lpar, local store region (256kB)
|-
|0x30000000d000
|0x30000000d000
|4096
|0×1 (RO)
|12
|0xa000000000000000
|SPU shadow registers lpar (4kB, read-only)
|-
|}

From this info we see a single lpar is used for all the SPU MMIO region (see figure 5-1 CBE Memory Map of the Cell Broadband Engine Programming Handbook) and another lpar is used for the SPE registers.
----
=== lv1_set_spe_interrupt_mask ===

Set the interrupt mask of a specific spe.

===== Kernel Call =====

 lv1_set_spe_interrupt_mask( /*IN*/ spe_id, class, mask );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|spe_id - spe id
|-
|R4
|class - spe interrupt class
|-
|R5
|mask - spe interrupt mask
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----

=== lv1_undocumented_function_62 ===

SPE (isolation, it updates a SLB entry, writes to SLB_Index, SLB_VSID, SLB_ESID and SLB_Invalidate_Entry registers) 

----

=== lv1_set_slb_for_logical_spu ===

Exists in PAL 1.7; Returned -4 (LV1_DENIED_BY_POLICY) when passed 0 in R3 to R10.
----

=== lv1_undocumented_function_63 ===

Does not exist in 3.15.

Exists in PAL 1.7; Returned -4 (LV1_DENIED_BY_POLICY) when passed 0 in R3 to R10.
----
=== lv1_set_spe_transition_notifier ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_spe_transition_notifier( /*IN*/ p1, p2, p3 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|spe_id - logical spe id
|-
|R4
|0 - Unknown usage
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_disable_logical_spe ===

Disables a logical SPE.

===== Kernel Call =====

 result = lv1_disable_logical_spe( /*IN*/ spe_id, 0 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|spe_id - logical spe id
|-
|R4
|0 - Unknown usage
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_clear_spe_interrupt_status ===

Clear the interrupt status of a specific spe.

===== Kernel Call =====

 lv1_clear_spe_interrupt_status( /*IN*/ spe_id, class, stat, 0 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|spe_id - logical spe id
|-
|R4
|class - spe interrupt class
|-
|R5
|stat - new interrupt status?
|-
|R6
|0 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_get_spe_interrupt_status ===

Get the interrupt status of a specific spe.

===== Kernel Call =====

 lv1_get_spe_interrupt_status( /*IN*/ spe_id, class, /*OUT*/ &stat );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|spe_id - logical spe id
|-
|R4
|class - spe interrupt class
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|stat - interrupt status
|-
|}
----
=== lv1_get_logical_ppe_id ===

Returns the logical PPE id.

===== Kernel Call =====

 status = lv1_get_logical_ppe_id( /*OUT*/ &ppe_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|logical PPE id
|-
|}

Notes:

When called from kernel module init function, ppe_id always seem to be 1.
----
=== lv1_set_interrupt_mask ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_interrupt_mask( /*IN*/ p1, p2, p3, p4, p5 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
|R6
|p4 - Unknown
|-
|R7
|p5 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_get_logical_partition_id ===

Called during Kernel setup.

The single output parameter, logical partition id, is later used as a parameter to call other Hypervisor functions.

===== Kernel Call =====

 result = lv1_get_logical_partition_id(/*OUT*/ &lp_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Outputs
|-
!register
!Description
|-
|R3
|result: 0 = LV1_SUCCESS
|-
|R4
|lp_id - logical partition id
|-
|}

Notes:

When called from kernel module init function, lp_id always seems to be 2.

The “read_node” function contained in “repository.c” is passed a parameter, lpar_id (logical partition id). If lpar_id is equal to PS3_LPAR_ID_CURRENT (0) then lv1_get_logical_partition_id is called to retrieve the current logical partition id. Any other value for lpar_id is passed directly to the following HV calls, though the only other value in use appears to be PS3_LPAR_ID_PME (1)
----
=== lv1_undocumented_function_75 ===

Exists in PAL 1.7; Returned 0 (LV1_SUCCESS) when passed 0 in R3 to R10.
----
=== lv1_configure_execution_time_variable ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_configure_execution_time_variable( /*IN*/ p1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_get_spe_irq_outlet ===

Get an IRQ outlet of a certain class from the specified SPE.

===== Kernel Call =====

 result = lv1_get_spe_irq_outlet( /*IN*/ spe_id, class, /*OUT*/ &outlet );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|spe_id - logical spe id
|-
|R4
|class - spe interrupt class (0, 1 or 2)
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|outlet - irq outlet
|-
|}

SPE Interrupt Class:
{| class="wikitable"
|-
!Class
!Description
!Examples
|-
|0
|Errors
|SPE errors, DMA errors, DMA alignment errors
|-
|1
|DMA translation exceptions
|MFC page faults, segment faults
|-
|2
|Application events
|SPE stop and signal, DMA completion interrupt, mailbox interrupts
|-
|}
----
=== lv1_set_spe_privilege_state_area_1_register ===

Sets a register in SPE privilege area 1.

===== Kernel Call =====

 lv1_set_spe_privilege_state_area_1_register( /*IN*/ spe_id, offset, value );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|spe_id - spe id
|-
|R4
|offset - register offset, 0, 0x600, 0x710, 0x808, 0x820
|-
|R5
|value - register value
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_undocumented_function_89 ===
SPE (writes to MFC_TLB_Invalidate_Entry register)

Exists in PAL 1.7; Returned -6 (LV1_NO_ENTRY) when passed 0 in R3 to R10.

----

=== lv1_create_repository_node ===

The repository appears to be an area of storage for use by the Hypervisor.

===== Abstract Call =====

 status = lv1_create_repository_node(/*IN*/ n1, n2, n3, n4, v1, v2 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|top level key
|-
|R4
|2nd level key
|-
|R5
|3rd level key
|-
|R6
|4th level key
|-
|R7
|value 1
|-
|R8
|value 2
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Notes:

This call is not used within the current Kernel, so the parameter list is based on speculation.
It will still return 0 if the specified node already exists, and it will not change current data.

See “lv1_get_repository_node_value” for an example of actual key/value usage within the Kernel.
----

=== lv1_get_repository_node_value ===

The repository appears to be an area of storage for use by the Hypervisor. 256-bit keys are used to reference 128-bit values stored in the repository. Functions exist to create, get, modify and remove repository nodes.

See notes below for usage speculation.

===== Kernel Call =====

 status = lv1_get_repository_node_value(/*IN*/ lpar_id, n1, n2, n3, n4 /*OUT*/ &v1, &v2 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|logical partion id
|-
|R4
|top level key
|-
|R5
|2nd level key
|-
|R6
|3rd level key
|-
|R7
|4th level key
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status: 0 = OK, -6 = LV1_NO_ENTRY
|-
|R4
|value 1
|-
|R5
|value 2
|-
|}

Notes:

The logical partition id is also required as an input parameter to get a repository node value, but this parameter does not appear to be passed when creating, modifying or removing nodes.

There are instances in the Kernel code where the keys are constructed from string values, which appear to follow a 4-level key/subkey hierarchy.

===== Test Results =====

Calling lv1_get_repository_node_value for the node ‘bi.pu.#1.rm_size’ produces the following result:

{| class="wikitable"
|-
! colspan="4" | bi.pu.(1).rm_size - Real mode memory size
|-
!Register
!Hex Value
!Value
!Comment
|-
|R3
|0000000000000002
|(2)
|PS3_LPAR_ID_CURRENT
|-
|R4
|0000000062690000
|....bi..
|boot info?
|-
|R5
|7075000000000000
|pu......
|processor unit
|-
|R6
|0000000000000001
|........
|pu id (1)
|-
|R7
|726d5f73697a6500
|rm_size.
|real mode size
|-
! colsize="4" | Outputs
|-
|R3
|0000000000000000
|(0)
|LV1_SUCCESS
|-
|R4
|0000000008000000
|(134217728)
|128 Mb
|-
|R5
|0000000000000000
|(0)
|-
|}

Other nodes referenced in “repository.c”:

{| class="wikitable"
|-
! colspan="4" | lpar_id = PS3_LPAR_ID_CURRENT (0×2)
|-
!Node
!v1
!v2
!Comment
|-
|bi.spun.#0.#0
|0000000000000006 (6)
|0 (0)
|number of physical spus reserved
|-
|bi.spursvn.#0.#0
|0000000000000006 (6)
|0 (0)
|number of spu resource reservations
|-
|bi.spursv.(0..5).#0
|8000000000000000 (PS3_SPU_RESOURCE_TYPE_EXCLUSIVE)
|(0..5)
|spu resource reservation id value
|-
|bi.boot_dat.address.#0
|0000000007fff000 (134213632)
|0 (0)
|boot data address
|-
|bi.boot_dat.size.#0
|0000000000000800 (2048)
|0 (0)
|boot data size
|-
|bi.pu.(1).rm_size
|0000000008000000 (134217728)
|0 (0)
|real mode limit
|-
|bi.rgntotal.#0.#0
|000000000f800000 (260046848)
|0 (0)
|max memory size
|}

{| class="wikitable"
|-
! colspan="4" | lpar_id = PS3_LPAR_ID_PME (0×1)
|-
!Node
!v1
!v2
!Comment
|-
|ben.#0.#0.#0
|0000000000000001 (1)
|0000000000000000 (0)
|Unused - in function “ps3_repository_read_num_be”
|-
|be(0).#0.#0.#0
|0000000000000000 (0)
|0000000000000000 (0)
|be node id (used to retrieve clock freq)
|-
|be.(0).clock.#0
|0000000004c1a6c0 (79800000)
|0000000000000000 (0)
|decrementer frequency (3.2 Ghz / 40)
|}

{| class="wikitable"
|-
! colspan="4" | lpar_id = PS3_LPAR_ID_PME (0×1) - FW 3.15 PAL 60GB PS3, First Generation (Fat)
|-
!Node
!v1
!v2
!Comment
|-
|sys.flash.fmt.#0
|00000000000001 (1)
|00000000000000 (0)
|Flash format.<br> v1: 1 = NAND , 2 = VFLASH?
|-
|sys.hw.config.#0
|20000000fffffeff
|00000000000000 (0)
|0×20000000000000 mask + something
|-
|sys.flash.ext.#0
|000000000000ff (255)
|00000000000000 (0)
|–
|-
|plat.id.#0.#0
|436f6b4231300000 (ASCII‘CokB10’)
|00000000000000 (0)
|Platform ID
|-
|sys.ac.sd.#0
|00000000000000 (0)
|00000000000000 (0)
|System Debug Flag
|-
|sys.flash.boot.#0
|00000000000000 (0)
|00000000000000 (0)
|–
|-
|be.0.lpm.priv
|00000000000002 (2)
|00000000780101 (7864577)
|–
|-
|rsx.rdcy.1.#0
|ffff0d020a02ffff
|00000000000000 (0)
|–
|-
|rsx.rdcy.2.#0
|ffffffffffffffff
|00000000000000 (0)
|–
|-
|rsx.rdcy.3.#0
|00000000000000 (0)
|00000000000000 (0)
|–
|-
|rsx.rdcy.4.#0
|00000000000000 (0)
|00000000000000 (0)
|–
|-
|rsx.rdcy.5.#0
|00000000000000 (0)
|00000000000000 (0)
|–
|-
|rsx.rdcy.6.#0
|00000000000000 (0)
|00000000000000 (0)
|–
|-
|rsx.rdcy.7.#0
|00000000000000 (0)
|00000000000000 (0)
|–
|-
|rsx.rdcy.8.#0
|00000000000000 (0)
|00000000000000 (0)
|–
|-
|mu.1.size.#0
|00000010000000 (268435456)
|00000000000000 (0)
|–
|-
|be.0.tb_clk.#0
|00000004c1a6c0 (79800000)
|00000000000000 (0)
|–
|-
|be.0.nclk.#0
|000000be420e00 (3192000000)
|00000000000000 (0)
|–
|-
|ios.net.eurus.lpar
|00000000000000 (0)
|00000000000000 (0)
|–
|-
|sys.syscon.pversion.#0
|00000000000001 (1)
|00000000000000 (0)
|–
|-
|sys.param.load.rom1st
|00000000000001 (1)
|00000000000000 (0)
|–
|-
|lv1.maxplgid.#0.#0
|00000000000100 (256)
|00000000000000 (0)
|–
|-
|lv1.specver.#0.#0
|00000300010005
|00000000000000 (0)
|Matches firmware 3.1.5
|-
|lv1.buildid.#0.#0
|00000000000000 (0)
|00000000000000 (0)
|–
|-
|lv1.ts.size.#0
|00000000000000 (0)
|00000000000000 (0)
| –
|-
|lv1.ts.start.#0
|00000010000000 (268435456)
|00000000000000 (0)
|–
|}
----

=== lv1_modify_repository_node_value ===

The repository appears to be an area of storage for use by the Hypervisor.

===== Abstract Call =====

 status = lv1_modify_repository_node_value(/*IN*/ n1, n2, n3, n4, v1, v2 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|top level key
|-
|R4
|2nd level key
|-
|R5
|3rd level key
|-
|R6
|4th level key
|-
|R7
|value 1
|-
|R8
|value 2
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Parameter list based on speculation. Not used in current Kernel.
----
=== lv1_remove_repository_node ===

The repository appears to be an area of storage for use by the Hypervisor.

===== Abstract Call =====

 status = lv1_remove_repository_node( /*IN*/ n1, n2, n3, n4 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|top level key
|-
|R4
|2nd level key
|-
|R5
|3rd level key
|-
|R6
|4th level key
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Parameter list based on speculation. Not used in current Kernel.
----
=== lv1_read_htab_entries ===

Not used in current Kernel.

===== Abstract Call =====

 result = lv1_read_htab_entries( /*IN*/ p1, p2, /*OUT*/ &v1, &v2, &v3, &v4, &v5 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - vas_id
|-
|R4
|p2 - offset
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - unknown
|-
|R5
|v2 - unknown
|-
|R6
|v3 - unknown
|-
|R7
|v4 - unknown
|-
|R8
|v5 - unknown
|-
|}

Notes: offset is 64-bit indexed. r4-r7 seem to be right from the htab. r8 is 16-bit indexed reading from something 0xFFFB is max offset
----
=== lv1_set_dabr ===

Sets dabr (Data Address Breakpoint Register) and dabrx (Data Address Breakpoint Register Extension)

===== Kernel Call =====

 result = lv1_set_dabr( /*IN*/ dabr, dabrx);

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|dabr - see notes
|-
|R4
|dabrx - see notes
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Notes:
*DABR:
 Bit(s) Name Description
 0:60   DAB  Data Address Breakpoint
 61     BT   Breakpoint Translation
 62     DW   Data Write
 63     DR   Data Read

*DABRX
 Bit(s) Name  Description
 0:59         Reserved
 60     BTI   Breakpoint Translation Ignore
 61:63  PRIVM Privilege Mask
 61     HYP   Hypervisor state - unsupported in LV1
 62     PNH   Privileged but Non-Hypervisor state
 63     PRO   Problem state
When PRIVM in dabrx is 0 or when any unsupported or reserved bit in dabrx is active, both dabr and dabrx writes are not performed and 0x2FFFFFFEF is returned. <br><br>
DABRX is defined in “setup.c” as follows
 enum {DABR_USER = 1, DABR_KERNEL = 2,};
----

=== lv1_set_vmx_graphics_mode ===

Set the Single Precision mode of the vmx graphics units in the PPU

===== Abstract Call =====

 result = lv1_set_vmx_graphics_mode( mode );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|mode - 0 = IEEE 754-1985 SIMD rounding mode for VMX/Altivec Instructions
|-
|
|mode - 1 = SPE-compatible SIMD graphics-rounding mode for VMX/Altivec Instructions
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|result: 0 = LV1_SUCCESS, -17 = LV1_ILLEGAL_PARAMETER_VALUE
|-
|}

Notes:

This is a call to set the single precision rounding mode of the VMX units in the Cell PPUs. The AltiVec/VMX SIMD/Vector processing unit has 2 rounding modes for dealing with Single-precision floating-point. IEEE 754-1985 and SPE-compatible SIMD graphics-rounding mode.

The Cell Broadband Engine Programming Handbook has this to say on the subject: The first implementation of the Cell Broadband Engine Architecture (CBEA) (the CBE processor) supports instructions with a graphics rounding mode. This mode allows programs written with vector/SIMD multimedia extension instructions to produce floating-point results that are equivalent in precision to those written in the SPU instruction set. In this mode, as in the SPU environment, the default rounding mode is round to zero, denormals are treated as zero, and there are no infinities or NaNs.

This call change bit 12 (known as grap_md or grap_mode in various documents) in the HID1 register. Hardware Implementation Register 1 is a HV privileged resource, hence to change the mode from Supervisor mode requires a HV call.

Reference Documents: Cell Broadband Engine Programming Handbook V1.1 Cell Broadband Engine Registers V1.5

Tests:

Info taken from kboot-10\dl\linux-2.6.16\include\asm-powerpc\lv1calltab.h (kboot-20061208)

When recompiled into Kernel module init function, accepts values of 0 and 1 for p1. All other values return -17 (LV1_ILLEGAL_PARAMETER_VALUE)
----

=== lv1_set_thread_switch_control_register ===

Not used in current Kernel.

===== Abstract Call =====

 result = lv1_set_thread_switch_control_register( /*IN*/ p1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}

Notes:

Info taken from kboot-10\dl\linux-2.6.16\include\asm-powerpc\lv1calltab.h (kboot-20061208)
----
=== lv1_authenticate_program_segment ===
previous alias: lv1_undocumented_function_99

SPE (isolation, syscall 0x10043, syscall 0x10042, syscall 0x1004A)

Exists in PAL 1.7; Returned -4 (LV1_DENIED_BY_POLICY) when passed 0 in R3 to R10.

----

=== lv1_undocumented_function_102 ===
Returns current TB ticks 

Exists in PAL 1.7; Returned 0 (LV1_SUCCESS) and R4 = 0x692F5D1E7h when passed 0 in R3 to R10.
----

=== lv1_get_total_execution_time ===

Not used in current kernel. Does not exist in 3.15 HV dump.

===== Abstract Call =====

 result = lv1_get_total_execution_time( /*IN*/ p1, p2, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}

Notes:

I always get LV1_NOT_IMPLEMENTED
----
=== lv1_undocumented_function_105 ===

Exists in PAL 1.7. Returns -17 (LV1_ILLEGAL_PARAMETER_VALUE, 0, 0, C000000000537EF8h, F09B89AF5001h, 6C0061D8E190h, C0000000008DF718h, 
F09B89AF5001h, when passed 0 in R3 to R10.
----
=== lv1_undocumented_function_106 ===

Exists in PAL 1.7. Returns the same as [[HV_Syscall_Reference#lv1_undocumented_function_105|lv1_undocumented_function_105]].
----
=== lv1_undocumented_function_107 ===

Exists in PAL 1.7. Returns the same as [[HV_Syscall_Reference#lv1_undocumented_function_105|lv1_undocumented_function_105]].
----
=== lv1_undocumented_function_108 ===

Exists in PAL 1.7. Returns the same as [[HV_Syscall_Reference#lv1_undocumented_function_105|lv1_undocumented_function_105]].
----
=== lv1_undocumented_function_109 ===

Exists in PAL 1.7. Returns the same as [[HV_Syscall_Reference#lv1_undocumented_function_105|lv1_undocumented_function_105]].
----
=== lv1_read_remote_file ===

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|u32 type
|-
|R4
|u32 *path
|-
|R5
|u64 offset
|-
|R6
|u32 *buf
|-
|R7
|u64 size
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|status - 0 = OK, LV1_TYPE_MISMATCH when type is not 1. Other values are unknown but indicate failure.
|-
|R4
|n_read
|-
|}
----

=== lv1_write_remote_file ===

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|u32 type
|-
|R4
|u32 *path
|-
|R5
|u64 offset
|-
|R6
|u32 *buf
|-
|R7
|u64 size
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|status
|-
|R4
|n_write
|-
|}
----
=== lv1_get_remote_file_size ===

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|u32 type
|-
|R4
|u32 *path
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|status
|-
|R4
|file_size
|-
|}----
=== lv1_map_physical_address_region ===

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|start - 
|-
|R4
|page_size - 
|-
|R5
|size - 
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|lpar_addr - 
|-
|}

----

=== lv1_unmap_physical_address_region ===

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|lpar_addr - 
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}


----

=== lv1_allocate_io_segment ===

Allocate an io segment.

===== kboot Call =====

 result = lv1_allocate_io_segment( /*IN*/ ioas_id, segment_size, io_page_size, /*OUT*/ &ioif_addr );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ioas_id - io address space id
|-
|R4
|segment_size - io segment size
|-
|R5
|io_page_size - io page size, 0xC, 0×10, 0×14
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|ioif_addr - io interface address
|-
|}

Notes:

Code taken from kboot-10\dl\linux-2.6.16\sound\powerpc\snd_ps3pf.c (kboot-20061208)
 ret64 = lv1_allocate_io_segment(0,           /* io space */
    IO_SEGMENTSIZE, /* segment size */
    IO_PAGESIZE_SHIFT, /* io page size */
    &(ioif_map_info_array[current_segment].ioif_addr));
----
=== lv1_release_io_segment ===

Release an io segment.

===== kboot Call =====

 result = lv1_release_io_segment( /*IN*/ ioas_id, ioif_addr );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ioas_id - io address space id
|-
|R4
|ioif_addr - io interface address
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Notes:

Code taken from kboot-10\dl\linux-2.6.16\sound\powerpc\snd_ps3pf.c (kboot-20061208)
 ret64 = lv1_release_io_segment(0, /* io space */
    ioif_map_info_array[current_segment].ioif_addr);
----
=== lv1_allocate_ioid ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_allocate_ioid( /*IN*/ p1, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|SBZ
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|the ioid
|-
|}

Notes:

Info taken from kboot-10\dl\linux-2.6.16\include\asm-powerpc\lv1calltab.h (kboot-20061208)
----
=== lv1_release_ioid ===

Not used in current Kernel.

===== Abstract Call =====

 result = lv1_release_ioid( /*IN*/ p1, p2 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}

Notes:

Info taken from kboot-10\dl\linux-2.6.16\include\asm-powerpc\lv1calltab.h (kboot-20061208)
----
=== lv1_construct_io_irq_outlet ===

Construct an outlet for a non-virtualized device interrupt.

===== Kernel Call =====

 result = lv1_construct_io_irq_outlet( /*IN*/ interrupt_id, /*OUT*/ &outlet );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|interrupt_id - interrupt id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|outlet - interrupt outlet
|-
|}
----
=== lv1_destruct_io_irq_outlet ===

Destruct a previously constructed device interrupt outlet.

===== Kernel Call =====

 result = lv1_destruct_io_irq_outlet( /*IN*/ outlet );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|outlet - interrupt outlet
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|}
----
=== lv1_map_htab ===

Map the hash page table.

===== Kernel Call =====

 result = lv1_map_htab( /*IN*/ 0, /*OUT*/ &htab_addr );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|0 - Unknown (lpid?)
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|htab_addr - hash page table address
|}

Notes:

In “htab.c” return code is assigned, but not used. Must be translated and ioremapped before it can be used in the kernel. It’s 1MB long
----
=== lv1_unmap_htab ===

Unmap the hash page table.

===== Kernel Call =====

 lv1_unmap_htab( /*IN*/ htab_addr );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|htab_addr - hash page table address
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|}
----
=== lv1_read_remote_file_long_name ===

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|u32 type
|-
|R4
|u32 *path
|-
|R5
|u32 path_len
|-
|R6
|u64 offset
|-
|R7
|u32 *buf
|-
|R8
|u64 size
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|status
|-
|R4
|n_read
|-
|}
----
=== lv1_write_remote_file_long_name ===

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|u32 type
|-
|R4
|u32 *path
|-
|R5
|u32 path_len
|-
|R6
|u64 offset
|-
|R7
|u32 *buf
|-
|R8
|u64 size
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|status
|-
|R4
|n_write
|-
|}
----
=== lv1_get_remote_file_size_long_name ===

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|u32 type
|-
|R4
|u32 *path
|-
|R5
|u32 path_len
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|status
|-
|R4
|file_size
|-
|}
----
=== lv1_get_version_info ===

Returns PS3 firmware version information.

===== Kernel Call =====

 result = lv1_get_version_info( /*OUT*/ &raw );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|raw - firmware data (see notes)
|}

Notes:

The firmware information is accessed using the following union:
 union ps3_firmware_version {
 	u64 raw;
 	struct {
 		u16 pad;
 		u16 major;
 		u16 minor;
 		u16 rev;
 	};
 };
----
=== lv1_undocumented_function_134 ===

Exists in PAL 1.7. Returns 0 when passed R3-R10=0.
----
=== lv1_undocumented_function_135 ===

Exists in PAL 1.7. Returns -6 (LV1_NO_ENTRY) in R3, rest same as  [[HV_Syscall_Reference#lv1_undocumented_function_105|lv1_undocumented_function_105]].
----
=== lv1_undocumented_function_136 ===

Exists in PAL 1.7. Returns -6 (LV1_NO_ENTRY) in R3, rest same as  [[HV_Syscall_Reference#lv1_undocumented_function_105|lv1_undocumented_function_105]].
----
=== lv1_undocumented_function_137 ===
SPE

Exists in PAL 1.7. Returns -4 (LV1_DENIED_BY_POLICY) when passed 0 in R3-R10.
----

=== lv1_undocumented_function_138 ===
SPE

Exists in PAL 1.7. Returns -4 (LV1_DENIED_BY_POLICY) when passed 0 in R3-R10.
----

=== lv1_construct_lpm ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_construct_lpm( /*IN*/ p1, p2, p3, p4, p5, p6, /*OUT*/ &v1, &v2, &v3 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - node_id, this is the node id of the processor, 0 is only valid value
|-
|R4
|p2 - tb_type, 0 is none, 1 is internal
|-
|R5
|p3 - Unknown, is 0
|-
|R6
|p4 - Unknown, is 0
|-
|R7
|p5 - tb_cache in lpar, 128 byte aligned
|-
|R8
|p6 - tb_cache_size
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status
|-
|R4
|v1 - lpm_id
|-
|R5
|v2 - outlet_id
|-
|R6
|v3 - tb_size
|-
|}
----
=== lv1_destruct_lpm ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_destruct_lpm( /*IN*/ p1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - lpm_id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_start_lpm ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_start_lpm( /*IN*/ p1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - lpm_id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_stop_lpm ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_stop_lpm( /*IN*/ p1, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}
----
=== lv1_copy_lpm_trace_buffer ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_copy_lpm_trace_buffer( /*IN*/ p1, p2, p3 /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - lpm_id
|-
|R3
|p2 - offset
|-
|R3
|p3 - request
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status
|-
|R4
|v1 - tmp
|-
|}
----
=== lv1_add_lpm_event_bookmark ===

Not in current kernel.

===== Abstract Call =====

 result = lv1_add_lpm_event_bookmark( /*IN*/ p1, p2, p3, p4, p5 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R3
|p2 - Unknown
|-
|R3
|p3 - Unknown
|-
|R6
|p4 - Unknown
|-
|R7
|p5 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_delete_lpm_event_bookmark ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_delete_lpm_event_bookmark( /*IN*/ p1, p2, p3 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R3
|p2 - Unknown
|-
|R3
|p3 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_set_lpm_interrupt_mask ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_lpm_interrupt_mask( /*IN*/ p1, p2, p3, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R3
|p2 - Unknown
|-
|R3
|p3 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}
----
=== lv1_get_lpm_interrupt_status ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_get_lpm_interrupt_status( /*IN*/ p1, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}
----
=== lv1_set_lpm_general_control ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_lpm_general_control( /*IN*/ p1, p2, p3, p4, p5, /*OUT*/ &v1, &v2 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
|R6
|p4 - Unknown
|-
|R7
|p5 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|R5
|v2 - Unknown
|-
|}
----
=== lv1_set_lpm_interval ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_lpm_interval( /*IN*/ p1, p2, p3, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}
----
=== lv1_set_lpm_trigger_control ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_lpm_trigger_control( /*IN*/ p1, p2, p3, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}
----
=== lv1_set_lpm_counter_control ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_lpm_counter_control( /*IN*/ p1, p2, p3, p4, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
|R6
|p4 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}
----
=== lv1_set_lpm_group_control ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_lpm_group_control( /*IN*/ p1, p2, p3, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}
----
=== lv1_set_lpm_debug_bus_control ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_lpm_debug_bus_control( /*IN*/ p1, p2, p3, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}
----
=== lv1_set_lpm_counter ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_lpm_counter( /*IN*/ p1, p2, p3, p4, p5, /*OUT*/ &v1, &v2 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
|R6
|p4 - Unknown
|-
|R7
|p5 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|R5
|v2 - Unknown
|-
|}
----
=== lv1_set_lpm_signal ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_lpm_signal( /*IN*/ p1, p2, p3, p4, p5, p6, p7 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
|R6
|p4 - Unknown
|-
|R7
|p5 - Unknown
|-
|R8
|p6 - Unknown
|-
|R9
|p7 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_set_lpm_spr_trigger ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_lpm_spr_trigger( /*IN*/ p1, p2 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_insert_htab_entry ===

Used in current kernel.

===== Kernel Call =====

 result = lv1_insert_htab_entry( /*IN*/ p1, p2, p3, p4, p5, p6, /*OUT*/ &v1, &v2, &v3 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - htab ID, 0 or returns -6
|-
|R4
|p2 - hpte_group, 0 or returns -17
|-
|R5
|p3 - hpte_v
|-
|R6
|p4 - hpte_r
|-
|R7
|p5 - Bolted flag
|-
|R8
|p6 - flags?
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - inserted_index
|-
|R5
|v2 - evicted_v
|-
|R6
|v3 - evicted_r
|-
|}

Notes: Kernel usage:
 result = lv1_insert_htab_entry(PS3_LPAR_VAS_ID_CURRENT, hpte_group,
 				       hpte_v, hpte_r,
 				       HPTE_V_BOLTED, 0,
 				       &inserted_index,
 				       &evicted_v, &evicted_r);
----
=== lv1_read_virtual_uart ===

Read data from a VUART port into a provided buffer.

===== Kernel Call =====

 result = lv1_read_virtual_uart( /*IN*/ port_number, buffer, bytes, /*OUT*/ bytes_read );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|port_number - VUART port number
|-
|R4
|buffer - pointer to buffer (must be address in lpar)
|-
|R5
|bytes - buffer size?
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|bytes_read - number of bytes read into buffer
|-
|}
----
=== lv1_write_virtual_uart ===

Write a buffer of data to a VUART port.

===== Kernel Call =====

 result = lv1_write_virtual_uart( /*IN*/ port_number, buffer, bytes, /*OUT*/ bytes_written );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|port_number - VUART port number
|-
|R4
|buffer - pointer to buffer (must be address in lpar)
|-
|R5
|bytes - buffer size?
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|bytes_written - number of bytes written to VUART
|-
|}
----
=== lv1_set_virtual_uart_param ===

Set a parameter for a port on the VUART.

===== Kernel Call =====

 result = lv1_set_virtual_uart_param( /*IN*/ port_number, param_id, param_value );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|port_number - VUART port number
|-
|R4
|param_id - id of parameter to set (see notes)
|-
|R5
|param_value - parameter value
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

See [[HV_Syscall_Reference#lv1_get_virtual_uart_param|lv1_get_virtual_uart_param]] for parameter information.
----
=== lv1_get_virtual_uart_param ===

Get a parameter for a port on the VUART.

===== Kernel Call =====

 result = lv1_get_virtual_uart_param( /*IN*/ port_number, param_id, /*OUT*/ &param_value );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|port_number - VUART port number
|-
|R4
|param_id - id of parameter to set (see notes)
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|param_value - parameter value
|-
|}

VUART parameters defined in vuart.c:
{| class="wikitable"
|-
!Parameter
!param_id
!Notes
|-
|PARAM_TX_TRIGGER
|0
|
|-
|PARAM_RX_TRIGGER
|1
|
|-
|PARAM_INTERRUPT_MASK
|2
|
|-
|PARAM_RX_BUF_SIZE
|3
|read only
|-
|PARAM_RX_BYTES
|4
|read only
|-
|PARAM_TX_BUF_SIZE
|5
|read only, not referenced in current Kernel
|-
|PARAM_TX_BYTES
|6
|read only, not referenced in current Kernel
|-
|PARAM_INTERRUPT_STATUS
|7
|read only
|-
|}
----
=== lv1_configure_virtual_uart_irq ===

Configure the VUART IRQ.

===== Kernel Call =====

 result = lv1_configure_virtual_uart_irq( /*IN*/ lpar_addr, /*OUT*/ &outlet );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|lpar_addr - logical partition address of virtual uart interrupt bitmap
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|outlet - irq outlet
|-
|}

Notes:

Comment from interrupt.c:
 /**
 * The system supports only a single virtual uart, so multiple calls without
 * freeing the interrupt will return a wrong state error.
 */
----
=== lv1_undocumented_function_167 ===
SPE (isolation, reads from SPU_Out_Intr_Mbox and MFC_CNTL registers) 

Exists on PAL 1.7. Returns -4 (LV1_DENIED_BY_POLICY) when passed 0 in R3 to R10.
----

=== lv1_undocumented_function_168 ===
SPE (isolation, writes to MFC_CNTL register) 

Exists on PAL 1.7. Returns -4 (LV1_DENIED_BY_POLICY) when passed 0 in R3 to R10.
----

=== lv1_open_device ===

Open the device for a given bus and device id.

===== Kernel Call =====

 result = lv1_open_device( /*IN*/ bus_id, dev_id, 0 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|0 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status: LV1_SUCCESS (0) - OK
LV1_NO_ENTRY (-6) - invalid dev_id 
LV1_BUSY (-9) - device already open 
LV1_ILLEGAL_PARAMETER_VALUE (-17) - invalid bus_id
|-
|}

Notes:

Valid values for bus_id and dev_id can be obtained from the repository (see [[HV_Syscall_Reference#lv1_get_repository_node_value|lv1_get_repository_node_value]]).

Once open, functions such as [[HV_Syscall_Reference#lv1_map_device_mmio_region|lv1_map_device_mmio_region]] and [[HV_Syscall_Reference#lv1_allocate_device_dma_region|lv1_allocate_device_dma_region]] can be used to map the device into memory.

The value of R5 does not seem to affect the outcome of the call (powers of 2 in the 64 bit range were tested). One reason for the flag could be to indicate whether to open the device in shared mode or not (and thus prevent the LV1_BUSY return code).
----
=== lv1_close_device ===

Close the device for a given bus and device id.

===== Kernel Call =====

result = lv1_close_device( /*IN*/ bus_id, dev_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_map_device_mmio_region ===

Map an MMIO region to the specified device.

===== Kernel Call =====

 result = lv1_map_device_mmio_region( /*IN*/ bus_id, dev_id, bus_addr, size, page_size, /*OUT*/ &lpar_addr );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|bus_addr - address of the region
|-
|R6
|size - size of the region
|-
|R7
|page_size - page size of the region
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|lpar_addr - logical partition address of the mapped region
|-
|}
----
=== lv1_unmap_device_mmio_region ===

Unmap an MMIO region from the specified device.

===== Kernel Call =====

 result = lv1_unmap_device_mmio_region( /*IN*/ bus_id, dev_id, lpar_addr );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|lpar_addr - logical partition address of the mapped region
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_allocate_device_dma_region ===

Allocate a DMA region for the specified device.

===== Kernel Call =====

 result = lv1_allocate_device_dma_region( /*IN*/ bus_id, dev_id, io_size, io_pagesize, flag, /*OUT*/ &dma_region );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|io_size - region size
|-
|R6
|io_pagesize - specified as a PAGE_SHIFT (i.e. n where pagesize = 2^n)
|-
|R7
|flag - 0=32 bit mode, 2=8 bit mode
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|dma_region - dma region address
|-
|}

Notes: When the device is little endian, the mode must be set to 8 bit for 8 bit DMA to work as expected, otherwise the bytes will be read/written in the wrong order. OTOH, this mode requires that 16 and 32-bit values are byte-swapped by the CPU since they will appear as little endian in memory.
----

=== lv1_free_device_dma_region ===

Free a previously allocated DMA region for the specified device.

===== Kernel Call =====

 lv1_free_device_dma_region( /*IN*/ bus_id, dev_id, dma_region );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|dma_region - dma region address
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_map_device_dma_region ===

Map a DMA region for the specified device.

===== Kernel Call =====

 result = lv1_map_device_dma_region( /*IN*/ bus_id, dev_id, lpar_addr, dma_region, size, flags );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|lpar_addr - logical partition address
|-
|R6
|dma_region - dma region address
|-
|R7
|size - region size
|-
|R8
|flags - see notes
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Notes:

In “mm.c” and “ps3_storage.c”, flags parameter is always specified as 0xf800000000000000UL. They are the same flags as the IOPTE entry ones.
----
=== lv1_unmap_device_dma_region ===

Unmap a DMA region for the specified device.

===== Kernel Call =====

 result = lv1_unmap_device_dma_region( /*IN*/ bus_id, dev_id, dma_region, size );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|dma_region - dma region address
|-
|R6
|size - region size
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_read_pci_config ===

Read external PCI config. ''PS3tool only?''

===== kboot Call =====

 result = lv1_read_pci_config( /*IN*/ bus_id, pci_bus_id, dev_id, func_id, offset, size, /*OUT*/ &config_data );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - ps3 bus id
|-
|R4
|pci_bus_id - pci bus id
|-
|R5
|dev_id - pci device id
|-
|R6
|func_id - pci function
|-
|R7
|offset - offset to store data within config_data
|-
|R8
|size - size of config_data
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|config_data - pci config data
|-
|}

Notes:

Code taken from kboot-10\dl\linux-2.6.16\arch\powerpc\platforms\ps3pf\pci.c (kboot-20061208)
 status = lv1_read_pci_config(p->bus_id, p->bus_pci_bus, p->bus_pci_dev, p->bus_pci_func,
 	(uint64_t)offset, size, &data);
----
=== lv1_write_pci_config ===

Write external PCI config. ''PS3tool only?''

===== kboot Call =====

 result = lv1_write_pci_config( /*IN*/ bus_id, pci_bus_id, dev_id, func_id, offset, size, config_data );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - ps3 bus id
|-
|R4
|pci_bus_id - pci bus id
|-
|R5
|dev_id - pci device id
|-
|R6
|func_id - pci function
|-
|R7
|offset - offset to store data within config_data
|-
|R8
|size - size of config_data
|-
|R9
|config_data - pci config data
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Notes:

Code taken from kboot-10\dl\linux-2.6.16\arch\powerpc\platforms\ps3pf\pci.c (kboot-20061208)
 status = lv1_write_pci_config(p->bus_id, p->bus_pci_bus, p->bus_pci_dev, p->bus_pci_func,
    (uint64_t)offset, size, (uint64_t)val);
 if(status) {
    /* lv1_write_pci_config can't write reg from 0x10 to 0x3f */
 }
----
=== lv1_read_pci_io ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_read_pci_io( /*IN*/ p1, p2, p3, p4, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
|R6
|p4 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}

Notes:

Info taken from kboot-10\dl\linux-2.6.16\include\asm-powerpc\lv1calltab.h (kboot-20061208)
----
=== lv1_write_pci_io ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_write_pci_io( /*IN*/ p1, p2, p3, p4, p5 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
|R4
|p2 - Unknown
|-
|R5
|p3 - Unknown
|-
|R6
|p4 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}

Notes:

Info taken from kboot-10\dl\linux-2.6.16\include\asm-powerpc\lv1calltab.h (kboot-20061208)
----
=== lv1_undocumented_function_182 ===

Exists in PAL 3.15. Nothing known so far.
Note: probably a function that allocates or frees memory.
----
=== lv1_undocumented_function_183 ===

Exists in PAL 3.15. Nothing known so far.
Note: probably a function that allocates or frees memory.
----
=== lv1_net_add_multicast_address ===

Add multicast address to the specified network device.

===== Kernel Call =====

 result = lv1_net_add_multicast_address( /*IN*/ bus_id, dev_id, addr, flag );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|addr - see notes
|-
|R6
|flag - see notes
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Notes:

From “gelic_net.c”, addr can also take special values of 0 and GELIC_NET_BROADCAST_ADDR (0xffffffff) and flag is assigned values of 0 and 1.
----
=== lv1_net_remove_multicast_address ===

Remove multicast address on the specified network device.

===== Kernel Call =====

 result = lv1_net_remove_multicast_address( /*IN*/ bus_id, dev_id, 0, 1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|0 - Unknown
|-
|R6
|1 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_net_start_tx_dma ===

Start DMA transmit on the specified network device.

===== Kernel Call =====

 result = lv1_net_start_tx_dma( /*IN*/ bus_id, dev_id, bus_addr, 0 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|bus_addr - dma address?
|-
|R6
|0 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_net_stop_tx_dma ===

Stop DMA transmit on the specified network device.

===== Kernel Call =====

 result = lv1_net_stop_tx_dma( /*IN*/ bus_id, dev_id, 0 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|0 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_net_start_rx_dma ===

Start DMA receive on the specified network device.

===== Kernel Call =====

 result = lv1_net_start_rx_dma( /*IN*/ bus_id, dev_id, bus_addr, 0 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|bus_addr - dma address?
|-
|R6
|0 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_net_stop_rx_dma ===

Stop DMA receive on the specified network device.

===== Kernel Call =====

 result = lv1_net_stop_rx_dma( /*IN*/ bus_id, dev_id, 0 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|0 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_net_set_interrupt_status_indicator  ===

Set the interrupt status indicator for the specified network device.

===== Kernel Call =====

 result = lv1_net_set_interrupt_status_indicator( /*IN*/ bus_id, dev_id, irq_status_addr, 0 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|irq_status_addr - lpar address of the irq status indicator
|-
|R6
|0 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_net_set_interrupt_mask ===

Sets the interrupt mask for specified network device.

===== Kernel Call =====

 result = lv1_net_set_interrupt_mask( /*IN*/ bus_id, dev_id, mask, 0 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|mask - interrupt mask
|-
|R6
|0 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_net_control ===

Send a control command to the specified network device.

===== Kernel Call =====

 result = lv1_net_control( /*IN*/ bus_id, dev_id, p1, p2, p3, p4, /*OUT*/ &v1, &v2 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - bus id
|-
|R4
|dev_id - device id
|-
|R5
|p1 - command dependent input parameter
|-
|R6
|p2 - command dependent input parameter
|-
|R7
|p3 - command dependent input parameter
|-
|R8
|p4 - command dependent input parameter
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|v1 - command dependent output parameter
|-
|R5
|v2 - command dependent output parameter
|-
|}
----
=== lv1_undocumented_function_195 ===
WLAN Gelic device

Exists in PAL 1.7. Returns -3 (LV1_NO_PRIVILEGE) when passed 0 in R3 to R10.
----

=== lv1_undocumented_function_196 ===
WLAN Gelic device

Exists in PAL 1.7. Returns -3 (LV1_NO_PRIVILEGE) when passed 0 in R3 to R10.
----

=== lv1_connect_interrupt_event_receive_port ===

Assign a virtual interrupt to a system bus device.

===== Kernel Call =====

 result = lv1_connect_interrupt_event_receive_port( /*IN*/ bus_id, dev_id, outlet, interrupt_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - device bus id
|-
|R4
|dev_id - device id
|-
|R5
|outlet - interrupt outlet
|-
|R6
|interrupt_id - interrupt id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_disconnect_interrupt_event_receive_port ===

Disconnect a virtual interrupt from a system bus device.

===== Kernel Call =====

 result = lv1_disconnect_interrupt_event_receive_port( /*IN*/ bus_id, dev_id, outlet, interrupt_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|bus_id - device bus id
|-
|R4
|dev_id - device id
|-
|R5
|outlet - interrupt outlet
|-
|R6
|interrupt_id - interrupt id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_get_spe_all_interrupt_statuses ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_get_spe_all_interrupt_statuses( /*IN*/ p1, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}
----
=== lv1_undocumented_function_200 ===
SPE (isolation)

Exists in PAL 1.7. Returns -4 (LV1_DENIED_BY_POLICY) when passed 0 in R3 to R10.
----

=== lv1_undocumented_function_201 ===
SPE (isolation)

Exists in PAL 1.7. Returns -4 (LV1_DENIED_BY_POLICY) when passed 0 in R3 to R10.
----

=== lv1_deconfigure_virtual_uart_irq ===

Deconfigure the VUART IRQ.

===== Kernel Call =====

 result = lv1_deconfigure_virtual_uart_irq();

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_enable_logical_spe ===

Enables a logical SPE.

===== Kernel Call =====

 status = lv1_enable_logical_spe( /*IN*/ spe_id, resource_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|spe_id - logical spe id
|-
|R4
|resource_id - spe resource id (prevously retrieved from Kernel repository)
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_undocumented_function_209 ===
SPE (isolation)

Exists in PAL 1.7. Returns -4 (LV1_DENIED_BY_POLICY) when passed 0 in R3 to R10.
----

=== lv1_gpu_open ===

Open the GPU. Call [[HV_Syscall_Reference#lv1_gpu_close|lv1_gpu_close]] to close the GPU.

===== Kernel Call =====

 status = lv1_gpu_open( /*IN*/ p1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - Unknown, Kernel only ever passes 0, though other randomly chosen values seem to succeed.
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status: 0 = LV1_SUCCESS, -6 = LV1_NO_ENTRY
|-
|}

Notes:

When called from Kernel module init function, if GPU is already open, subsequent calls to lv1_gpu_open return LV1_NO_ENTRY (-6). Closing the GPU and re-opening succeeds.
----
=== lv1_gpu_close ===

Closes the GPU. Must be called once for every call to [[HV_Syscall_Reference#lv1_gpu_open|lv1_gpu_open]].

===== Kernel Call =====

 status = lv1_gpu_close();

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_gpu_device_map ===

Map a device into logical address space. Address needs to be ioremapped before use.

===== kboot Call =====

 result = lv1_gpu_device_map( /*IN*/ dev_id, /*OUT*/ &lpar_addr, &lpar_size );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|dev_id - device id (see notes)
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|lpar_addr - logical partition address of device block
|-
|R5
|lpar_size - size of device block
|-
|}

Notes:

Info taken from kboot-10\dl\linux-2.6.16\sound\powerpc\snd_ps3pf.c (kboot-20061208) where the audio front-end registers are mapped into memory. Two calls to lv1_gpu_device_map are performed, the first when dev_id = 1, to obtain the audio interrupt (Audio IRQ Outlet) and a second time when dev_id = 2 to obtain a mapping of the register block (Audio Registers).

lpar_addr is a virtual address, created by the Hypervisor. Multiple calls to lv1_gpu_device_map with the same dev_id return successfully, but the lpar_address returned for each is different (if there have been no intermediary lv1_gpu_device_unmap calls). These various virtual lpar_addr values all alias the same physical location in memory.

===== Test Results =====
{| class="wikitable"
|-
! colspan="5" | lv1_gpu_device_map
|-
!dev_id
!result
!lpar_addr
!lpar_size
!Comment
|-
|0
|ffffffffffffffef
|98d2f7d44da1ceae
|0100000000000000
|result = LV1_ILLEGAL_PARAMETER_VALUE
|-
|1
|0000000000000000
|0000300000022000
|0000000000001000
|Audio IRQ Outlet (map1_dump)
|-
|2
|0000000000000000
|00003c0000128000
|0000000000008000
|Audio_Registers (map2_dump)
|-
|3
|0000000000000000
|0000300000026000
|0000000000001000
|??? - Any attempt to dereference this lpar_addr locks up the PS3
|-
|4
|ffffffffffffffef
|0000300000026000
|0000000000001000
|result = LV1_ILLEGAL_PARAMETER_VALUE
|-
|5
|0000000000000000
|0000300000028000
|0000000000001000
|??? - (map5_dump)
|-
|6
|0000000000000000
|0000300000029000
|0000000000001000
|??? - (map6_dump)
|-
|7
|0000000000000000
|00003000002A0000
|0000000000010000
|??? - (map7_dump)
|-
|8
|0000000000000000
|000030000002B000
|0000000000001000
|video RAM at offset 0x0ff10000- (map8_dump)
|-
|9-255
| -20
|???
|???
|result = LV1_NOT_IMPLEMENTED
|-
|}

It is interesting that when dev_id = 4, LV1_ILLEGAL_PARAMETER_VALUE is returned with lpar_addr and lpar_size set to the values returned from the previous call - for the first call when dev_id = 0, values also appear to be set (though these could be garbage values)

===== Devices 1 & 2 =====
dev_id 1 gives a location used to process IRQ’s from the audio and dev_id 2 gives the base address of the Audio Hardware registers. From published Sony documents (http://www.watch.impress.co.jp/game/docs/20060329/3dps303.htm), Audio is believed to be on the RSX, this call seems to confirm that. Access to the audio after this mapping call (it would appear) bypasses the Hypervisor and occurs directly on the RSX hardware. 3,5,6,7,8 are currently unknown. Presumably 0 and 4 are otherwise valid parameters blocked by the Hypervisor for OtherOS (ie, they may function for Games) otherwise I would have expected a return result of -20 for them. So rather than just being a bridge for audio into HDMI, it is for all audio.

Also interesting is that the GPU version number returned by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]] appears at address 0×10 in the device 1 dump, though this of course may be complete coincidence.

===== Device 7 =====
dev_id 7 appears to be a video device. It is not possible to map the entire reported memory space (0×10000), only areas 0×0000 to 0x0fff and 0×2000 to 0x2fff (discovered via laborious trial and error testing, mapping other areas causes the PS3 to hang without warning). In both mappable areas, the current screen resolution can be seen at locations 0×200 and 0×210. Changes to the ps3 video mode (e.g. using the ps3videomode utility) can be observed in the mapped areas, but modifying the values directly does not affect the screen resolution. Although both areas contain different values, there appear to be parts in common, as changing the values at 0×200 and 0×210 directly in one area also causes the same values in the other area to change.

Given the screen resolution connection, it could be possible that this device is a mapping of the GPU display heads:

*Out of 16Kb, only two areas are mappable (= number of accessible display heads)
*Mappable areas are 2Kb apart → 8 total display heads (= size of display heads array returned by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]])

===== Device 8 =====

dev_id 8 appears to be a mapping of video RAM at offset 0x0ff10000. This region of video memory is referenced by RSX DMA objects but its purpose is unknown.
----
=== lv1_gpu_device_unmap ===

Unmaps the device from logical address space.

===== kboot Call =====

 lv1_gpu_device_unmap( /*IN*/ dev_id );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|dev_id - device id (see [[HV_Syscall_Reference#lv1_gpu_device_map|lv1_gpu_device_map]])
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}

Notes:

Info taken from kboot-10\dl\linux-2.6.16\sound\powerpc\snd_ps3pf.c (kboot-20061208)
----
=== lv1_gpu_memory_allocate ===

Allocate GPU memory.

===== Kernel Call =====

 status = lv1_gpu_memory_allocate(ddr_size, 0, 0, 0, 0, &memory_handle, &ddr_lpar);

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ddr_size - amount of DDR to reserve? (see notes)
|-
|R4
|tile_max_size in bytes. Max value 512*1024.
|-
|R5
|zcull_max_size in bytes. Max value 3075*1024.
|-
|R6
|tile_max_areas. Max value 15.
|-
|R7
|zcull_max_areas. Max value 8.
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|status: 0 = LV1_SUCCESS, -17 = LV1_ILLEGAL_PARAMETER_VALUE
|-
|R4
|memory_handle - used by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]] and [[HV_Syscall_Reference#lv1_gpu_memory_free|lv1_gpu_memory_free]]??
|-
|R5
|ddr_lpar - remappable address of allocated video memory, unused by Kernel.
|-
|}

Notes:

ddr_size accepts values (0..252) * 2^20 - values not divisible by 2^20 (1 MB) and above the range result in a return value of -17 (LV1_ILLEGAL_PARAMETER_VALUE). [Verified by Strontium Dog on an AU PS3 V1.5 firmware]

Bits 52-63 of ddr_size seem to be ignored or correspond to flags. The lower bits correspond to the amount of allocated video RAM. A call to [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]] using the returned memory_handle will create a RSX DMA object handle 0xfeed0000 corresponding to the region of allocated memory. Multiple calls to [[HV_Syscall_Reference#lv1_gpu_memory_allocate|lv1_gpu_memory_allocate]] with non-zero ddr_size will change the start of this region. The DMA object limit is set to ddr_size - 1. Before FW 2.1, a ddr_size of 0 was accepted, in which case a DMA object starting at zero and of limit 0xffffffff was created. Note that in this case, the start of this region is always zero even if previous calls to [[HV_Syscall_Reference#lv1_gpu_memory_allocate|lv1_gpu_memory_allocate]] with non-zero ddr_size were performed. As of FW 2.1 and above, a zero ddr_size is not accepted anymore.

Parameters r4-r7 are unknown. Maximum values for these parameters are respectively 512kB, 3075kB, 15 and 8. They refer to shared scarce resources, as allocations are retained across multiple calls to [[HV_Syscall_Reference#lv1_gpu_memory_allocate|lv1_gpu_memory_allocate]]. When attached to a context during [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]], the values of these parameters are reported in the lpar_driver_info structure of the context.

Cell separates multiple OS into Logical Partitions (lpar) described at http://research.scea.com/research/html/CellGDC05/13.html. PS3 GPU memory is referred to as DDR (or GDDR) whereas system memory is XDR. 256 MB of each are installed in PS3 though only XDR is currently available for use by OtherOS.

To make use of the allocated DDR ddr_lpar needs to be transformed into a usable address using:
 ddr_address = ioremap_flags(ddr_lpar, ddr_size, _PAGE_NO_CACHE);
Be aware that the memory that holds the physical GPU frame buffer is not allocated by the Kernel, just used. So on the first call to this, some or all of the memory you request (depending on now much you request) may be actually used as the frame buffer. You will know this, because your writes to memory will mysteriously disappear up to 20ms after you perform them. Note that direct access to video ram is very slow (~10MB/s).

===== Test Results =====
{| class="wikitable"
|-
!Register
!Hex
!Decimal
!Comments
|-
|R3
|0x000000000fc00000
|(264241152)
|252 MB
|-
|R4
|0×0000000000000000
|(0)
|
|-
|R5
|0×0000000000000000
|(0)
|
|-
|R6
|0×0000000000000000
|(0)
|
|-
|R7
|0×0000000000000000
|(0)
|
|-
! colspan="4" | Outputs
|-
|R3
|0×0000000000000000
|(0)
|LV1_SUCCESS
|-
|R4
|0x000000005a5a5a5b
|(...)
|memory handle
|-
|R5
|0x00007001a0000000
|(...)
|ddr logical partition address
|-
|}
----
=== lv1_gpu_memory_free ===

Free memory handle returned by [[HV_Syscall_Reference#lv1_gpu_memory_allocate|lv1_gpu_memory_allocate]]. Must be called to dispose of the handle returned by [[HV_Syscall_Reference#lv1_gpu_memory_allocate|lv1_gpu_memory_allocate]].

===== Kernel Call =====

 status = lv1_gpu_memory_free(ps3fb.memory_handle);

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|Memory handle returned by [[HV_Syscall_Reference#lv1_gpu_memory_allocate|lv1_gpu_memory_allocate]]
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}
----
=== lv1_gpu_context_iomap ===

Map system RAM address to GPU through the Cell FlexIO interface.

===== Kernel Call =====

 status = lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF, 
 			       xdr_lpar, ps3fb_videomemory.size, 0);

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ps3fb.context_handle as allocated by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]]
|-
|R4
|GPU_IOIF = 0x0d000000UL - GPU address where the system RAM virtual framebuffer is remapped
|-
|R5
|xdr_lpar - lpar version of the physical address of the virtual frame buffer in local memory. (Note: the lpar version = the physical address in the PS3)
|-
|R6
|ps3fb_videomemory.size = The size of the virtual frame buffer
|-
|R7
|0 - IOPTE flags - bitfield describing protection, coherency and ordering of the I/O mapping. Any combination of 0 or 2^{11 (cache hint),59 (read ordering),60 (write ordering),61 (coherency),62 (read protection) ,63 (write protection)} seems valid
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, LV1_TYPE_MISMATCH (-8) if R5 set to a DDR lpar address, LV1_ILLEGAL_PARAMETER_VALUE (-17) if any other bit set in R7 than described above
|-
|}

This function creates a mapping in GPU address space so that the RSX can access system RAM. The Kernel uses it to associate the virtual framebuffer residing in system RAM to the GPU, so that so that transfers can be initiated by the RSX from the system RAM to the video RAM using the [[HV_Syscall_Reference#lv1_gpu_context_attribute|lv1_gpu_context_attribute]]:fb_blit() call.

Comments:

It was previously suspected that GPU_IOIF was the address of GPU MMIO registers. However GPU_IOIF is a GPU address, not a lpar address, and therefore has no meaning on the Linux side, and cannot be directly mapped from the Linux address space. Reserving the memory block (using request_mem_region) and mapping (using ioremap) results in a block of memory that is used by Linux (nothing resembling IO registers was observed whilst single frame stepping a gfx demo). [was: As you’ve previously discovered that the top of RAM is 0x0e00 0000, GPU_IOIF here is 16Mb below that. That’s typically the size of the a graphics card PCI IO region on a PC, so given the name, I’d strongly suggest it’s not GPU memory that’s being mapped but the GPU IO registers. Although why this address range would overlap with RAM is a mystery.]

GPU_IOIF was successfully set to other values (0×00000000, 0×02000000, 0×04000000) with Linux booting and displaying correctly. A value of 0x0f000000 causes the PS3 to hang (need to retest 0x0e0000000)

Although it looks like GPU_IOIF would overlap video RAM, the RSX differentiates between the two by associating different DMA objects to the source and destination of the blit. The source is associated with DMA object handle 0xfeed0001 which targets system memory, while the destination is associated with DMA object handle 0xfeed0000 which targets video memory. This has been observed by analysing the FIFO commands sent to the GPU by the hypervisor during the [[HV_Syscall_Reference#lv1_gpu_context_attribute|lv1_gpu_context_attribute]]:fb_setup() and [[HV_Syscall_Reference#lv1_gpu_context_attribute|lv1_gpu_context_attribute]]:fb_blit() calls.

It seems a call to [[HV_Syscall_Reference#lv1_gpu_context_iomap|lv1_gpu_context_iomap]](handle, bus_addr, xdr_lpar, size, flags) is equivalent to a series of call to [[HV_Syscall_Reference#lv1_put_iopte|lv1_put_iopte]]:

 int i;
 int context_number; /* derived from handle, 1st allocated context 0, 2nd allocated context 1, etc... */
 
 for (i = 0; i < size; i += 1024 * 1024) {
 	lv1_put_iopte(0,             /* IO ASID */
 		      ((0x08ULL + context_number) << 28) | bus_addr) + i, /* IO address */ 
 		      xdr_lpar + i, /* Logical Partition address */
 	              1,            /* PS3_AUDIO_IOID, actually RSX IOID */
 		      flags);
 }
Tested by replacing the call to [[HV_Syscall_Reference#lv1_gpu_context_iomap|lv1_gpu_context_iomap]] with the code above in ps3fb.c.
----
=== lv1_undocumented_function_222 ===

Located @ 0x20D648 in 3.15 HV.

Does something with GPU Register 0x140, doesn't take arguments or return anything.
----
=== lv1_gpu_context_attribute ===

This is a multifunction call.
==== General Case ====
===== Abstract Call =====

 status = lv1_gpu_context_attribute(ps3fb.context_handle, operation_code, 
			       p1, p2, p3, p4 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ps3fb.context_handle as allocated by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]]
|-
|R4
|operation_code - The code of the operation to perform.
|-
|R5
|p1 - Parameter 1 to the operation
|-
|R6
|p2 - Parameter 2 to the operation
|-
|R7
|p3 - Parameter 3 to the operation
|-
|R8
|p4 - Parameter 4 to the operation
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

===== Operations =====

The operation code can be one of the following:

{| class="wikitable"
|-
!Operation
!Code
!Details
!Address in 3.15
|-
|No Entry
|0×0000
|Not a valid operation, returns LV1_NO_ENTRY (-6)
|
|-
|L1GPU_CONTEXT_ATTRIBUTE_FIFO_SETUP
|0×0001
|fifo_setup
|0×210910
|-
|Unknown
|0×0002
|fifo_pause, (rsx_ctx, 2, 0, 0, 0, 0)
|0x2108ec
|-
|Unknown
|0×0003
|fifo_continue,  (rsx_ctx, 3, 0, 0, 0, 0)
|0x2107c0
|-
|No Entry
|0×0004-0x00FF
|Not a valid operation, returns LV1_NO_ENTRY (-6)
|
|-
|L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_MODE_SET
|0×0100
|display_mode_set
|0x21092c
|-
|L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_SYNC
|0×0101
|display_sync
|0×210318
|-
|L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_FLIP
|0×0102
|display_flip
|0×210588
|-
|Unknown
|0×0103
|Unknown function, returns LV1_SUCCESS(0) when called with 0,0,0,0
|0×210994
|-
|Unknown
|0×0104
|Unknown function, returns LV1_SUCCESS(0) when called with 0,0,0,0
|0×210754
|-
|Unknown
|0×0105
|Unknown function, returns LV1_SUCCESS(0) when called with 0,0,0,0
|0×210828
|-
|Unknown
|0×0106
|cellGcmFunc4 ? , returns LV1_SUCCESS(0) when called with 0,0,0,0
|0x2109ac
|-
|Unknown
|0×0107
|Unknown function, returns LV1_SUCCESS(0) when called with 0,0,0,0 – Doesn’t Exist in the 3.15 HV.
|N/A
|-
|Unknown
|0×0108
|set interrupt frequency, returns LV1_ILLEGAL_PARAMETER_VALUE(-17) when called with 0,0,0,0
|0x21063c
|-
|Unknown
|0×0109
|Unknown function, returns LV1_SUCCESS(0) when called with 0,0,0,0
|0x2104e8
|-
|Unknown
|0x010A
|init gcm channel, (e.g. (rsx_ctx, 0x10A, 0, 0, 0x80000000, 0))
|0×210888
|-
|No Entry
|0x010B-0x01FF
|Not a valid operation, returns LV1_NO_ENTRY (-6)
|
|-
|Unknown
|0×0200
|Crashes the PS3 when called with 0,0,0,0. See CN2 – Doesn’t exist in 3.15
|N/A
|-
|Unknown
|0×0201
|Unknown function, returns LV1_SUCCESS(0) when called with 0,0,0,0
|0×210724
|-
|Unknown
|0×0202
|generate rsx graphics error ?, returns LV1_SUCCESS(0) when called with 0,0,0,0. See CN3
|0x21083c
|-
|No Entry
|0×0203-0x02FF
|Not a valid operation, returns LV1_NO_ENTRY (-6)
|
|-
|Unknown
|0×0300
|tile, (set invalidate tile, set tile, bind tile, unbind tile)
|0x2108c0
|-
|Unknown
|0×0301
|Zcull, (set Zcull, bind Zcull, unbind Zcull)
|0x2104bc
|-
|Unknown
|0×0302
|Unknown function. found @ 0x2105E8 in the 3.15 HV
|0x2105e8
|-
|No Entry
|0×0303-0x03FF
|Not a valid operation, returns LV1_NO_ENTRY (-6)
|
|-
|Unknown
|0×0400
|Unknown function, returns LV1_SUCCESS(0) when called with 0,0,0,0
|0x2109d8
|-
|No Entry
|0×0401-0x05FF
|Not a valid operation, returns LV1_NO_ENTRY (-6)
|
|-
|L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP
|0×0600
|fb_setup
|0×210788
|-
|L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT
|0×0601
|fb_blit
|0x2107ec
|-
|L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT_SYNC
|0×0602
|fb_blit_sync
|0×210964
|-
|L1GPU_CONTEXT_ATTRIBUTE_FB_CLOSE
|0×0603
|Added on FW >= 2.1 and used in recent Linux kernel (called with 0,0,0,0) to undo fb_setup. Not a Valid operation on older firmware.
|0×210694
|-
|No Entry
|0×0604-0x0FFF
|Not a valid operation, returns LV1_NO_ENTRY (-6)
|
|-
|}

L1GPU_CONTEXT_ATTRIBUTE_FIFO_SETUP is undocumented and has been discovered by probing.

===== Notes =====

Probing this call by passing in an unknown operation_code and parameters of 0, seems to return a status of LV1_SUCCESS (0) whereas if the operation is not a valid id, the call returns LV1_NO_ENTRY (-6)

====== Crash Note 1 (CN1) ======
Symptoms of Crash:
 No Video.
 Keyboard/Mouse unresponsive.
 Green Power Light lit steady.
 Requires hard power off to clear (holding power button on front unresponsive).

====== Crash Note 2 (CN2) ======
Symptoms of Crash:
 No Video.
 Keyboard/Mouse unresponsive.
 Three quick beeps from internal PS3 beeper.
 Power Light lit blinks red.
 Pressing power Led makes it steady red, pressing again reboots.

====== Crash Note 3 (CN3) ======
Symptoms of Crash:
 Video remains on display (from time preceding call).
 All video updates cease.  
 Linux Kernel reports repeatedly: "lv1_gpu_context_attribute FB_BLIT failed: status -32768"
 Rebooted PS3 to clear using front power button, this did not fix condition.  Hard power reset required to clear.

==== lv1_gpu_context_attribute:display_mode_set ====

Sets up the display mode? In the 3.15 firmware, this function doesn’t actually do anything.
It takes 3 32bit parameters but then doesn’t do anything with them. Always returns 0.

This is a specific operation of the generic operation [[HV_Syscall_Reference#lv1_gpu_context_attribute|lv1_gpu_context_attribute]](...);

===== Kernel Call =====

 status = lv1_gpu_context_attribute(0x0,L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_MODE_SET,
 				   0, 0, 1, 0);

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ps3fb.context_handle as allocated by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]] theoretically. The Kernel actually passes 0 for this operation, so it must not be required.
|-
|R4
|operation_code - L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_MODE_SET (0×100)
|-
|R5
|p1 - 0 - Unknown.
|-
|R6
|p2 - 0 - Unknown.
|-
|R7
|head - 0 = Head A (Unfitted to the Retail PS3), 1 = Head B the active head on the PS3.
|-
|R8
|p4 - 0 - unused.
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

==== lv1_gpu_context_attribute:display_sync ====

Sets up some sort of Display Sync attribute mode.

This is a specific operation of the generic operation [[HV_Syscall_Reference#lv1_gpu_context_attribute|lv1_gpu_context_attribute]](...);

===== Kernel Call =====

 status = lv1_gpu_context_attribute(0x0,L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_SYNC,
 				   head, L1GPU_DISPLAY_SYNC_VSYNC, 0, 0);

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ps3fb.context_handle as allocated by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]] theoretically. The Kernel actually passes 0 for this operation, so it must not be required.
|-
|R4
|operation_code - L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_SYNC (0×101)
|-
|R5
|head - 0 = Head A (Unfitted to the PC), 1 = Head B the active head on the PS3.
|-
|R6
|sync_type - L1GPU_DISPLAY_SYNC_VSYNC = Enable VSync? 
Possibly also L1GPU_DISPLAY_SYNC_HSYNC = Enable HSync?
|-
|R7
|p3 - 0 - Unknown, seems unused.
|-
|R8
|p4 - 0 - Unknown, seems unused.
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

==== lv1_gpu_context_attribute:display_flip ====

Set the start of the current video page in video memory.

This is a specific operation of the generic operation [[HV_Syscall_Reference#lv1_gpu_context_attribute|lv1_gpu_context_attribute]](...);

===== Kernel Call =====

 status = lv1_gpu_context_attribute(ps3fb.context_handle,
 			           L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_FLIP,
 			           head, offset, 0, 0);

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ps3fb.context_handle as allocated by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]] theoretically.
|-
|R4
|operation_code - L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_FLIP (0×102)
|-
|R5
|head - 0 = Head A (Unfitted to the PC), 1 = Head B the active head on the PS3.
|-
|R6
|offset - Offset from start of video memory to set as active displayed memory.
|-
|R7
|p3 - 0 - Unknown, seems unused.
|-
|R8
|p4 - 0 - Unknown, seems unused.
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

==== lv1_gpu_context_attribute:fb_setup ====

Set the start of the current video page in video memory.

This is a specific operation of the generic operation [[HV_Syscall_Reference#lv1_gpu_context_attribute|lv1_gpu_context_attribute]](...);

===== Kernel Call =====

 status = lv1_gpu_context_attribute(ps3fb.context_handle,
 		L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP,
 		xdr_lpar, ps3fb_videomemory.size,
 		GPU_IOIF, 0);

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ps3fb.context_handle as allocated by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]] theoretically.
|-
|R4
|operation_code - L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP (0×600)
|-
|R5
|xdr_lpar - Address of command FIFO
|-
|R6
|ps3fb_videomemory.size - Size of command FIFO
|-
|R7
|GPU_IOIF = 0x0d000000UL. - GPU address of command FIFO (was: I dont know what this address is. Maybe its the address of the frame buffers in Video memory???)
|-
|R8
|p4 - 0 - Unknown, seems unused.
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Part of patch to move FIFO from start of video memory to end:
 status = lv1_gpu_context_attribute(ps3fb.context_handle,
  					   L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP,
 -					   xdr_lpar, ps3fb_videomemory.size,
 -					   GPU_IOIF, 0);
 +					   xdr_lpar + ps3fb.xdr_size,
 +					   GPU_CMD_BUF_SIZE,
 +					   GPU_IOIF + ps3fb.xdr_size, 0);

The memory map used to look like:
{| class="wikitable"
|-
!Address
!Description
|-
|xdr_lpar
|FIFO region
|-
|xdr_lpar + ???
|not used
|-
|xdr_lpar + ps3fb_videomemory.size - 2 * frame size
|frame 2
|-
|xdr_lpar + ps3fb_videomemory.size - frame size
|frame 1
|-
|xdr_lpar + ps3fb_videomemory.size
|END
|-
|}

The memory map of ps3fb now looks like this:
{| class="wikitable"
|-
!Address
!Description
|-
|xdr_lpar
|frame 1
|-
|xdr_lpar + FB_OFF(1)
|frame 2
|-
|xdr_lpar + FB_OFF(2)
|not used
|-
|xdr_lpar + ps3fb_videomemory.size - GPU_CMD_BUF_SIZE
|FIFO region
|-
|xdr_lpar + ps3fb_videomemory.size
|END
|-
|}

The FIFO section of the memory range is now not mapped into Linux’s address space.

So, from that change we can see that R5 and R7 are moved by the size of the xdr_size (videomemory_size-GPU_CMD_BUF_SIZE) so both refer to the FIFO buffer in different addressing schemes (probably physical memory address and LPAR address)

More discussion on this is at http://forums.ps2dev.org/viewtopic.php?t=8364

==== lv1_gpu_context_attribute:fb_blit ====

Block Image Transfer from Main memory to GPU memory.

This is a specific operation of the generic operation [[HV_Syscall_Reference#lv1_gpu_context_attribute|lv1_gpu_context_attribute]](...);

===== Kernel Call =====

 status = lv1_gpu_context_attribute(ps3fb.context_handle,
 			           L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT,
 				   offset, fb_ioif,
 				   L1GPU_FB_BLIT_WAIT_FOR_COMPLETION |
 				   (xres << 16) | yres,
 				   xres * BPP);	

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ps3fb.context_handle as allocated by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]] theoretically.
|-
|R4
|operation_code - L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT (0×601)
|-
|R5
|destination GPU address (offset in video RAM).
|-
|R6
|source GPU address (GPU_IOIF + offset, for system RAM mapped by [[HV_Syscall_Reference#lv1_gpu_context_iomap|lv1_gpu_context_iomap]]).
|-
|R7
|0×0000 : 0×0000 : xres : yres - x,y size of the blit.
|-
|R8
|line_length - span, number of bytes in a line. As of Firmware 1.90, lower 32-bit is destination span, upper 32-bit if not null is source span.
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

==== lv1_gpu_context_attribute:fb_blit_sync  ====

This call is never made by the Kernel

This is a specific operation of the generic operation [[HV_Syscall_Reference#lv1_gpu_context_attribute|lv1_gpu_context_attribute]](...);

===== Abstract Call =====

 status = lv1_gpu_context_attribute(ps3fb.context_handle,
 			           L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT_SYNC,
 			           p1, p2, p3, p4);

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ps3fb.context_handle as allocated by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]] theoretically.
|-
|R4
|ooperation_code - L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT_SYNC (0×602)
|-
|R5
|p1 - Unknown.
|-
|R6
|p2 - Unknown.
|-
|R7
|p3 - Unknown.
|-
|R8
|p4 - Unknown.
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

I would expect this call to be very similar, if not identical to fb_blit.
----
=== lv1_gpu_context_intr ===

Tests the current IRQ state of the GPU

===== Kernel Call =====

 status = lv1_gpu_context_intr(ps3fb.context_handle, &v1);

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|ps3fb.context_handle as allocated by [[HV_Syscall_Reference#lv1_gpu_context_allocate|lv1_gpu_context_allocate]].
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|IRQ Bitmap of all pending IRQ’s. This is a bitset. 
A bit = 0 means IRQ not pending, 1 = IRQ pending. 
Bit GPU_INTR_STATUS_VSYNC_0 = 0. IRQ for vsync on head A. Unused by Kernel 
Bit GPU_INTR_STATUS_VSYNC_1 = 1. IRQ for vsync on head B. Used by Kernel 
Bit GPU_INTR_STATUS_FLIP_0 = 2. IRQ for flip on head A. Unused by Kernel 
Bit GPU_INTR_STATUS_FLIP_1 = 3. IRQ for flip on head B. Unused by Kernel 
Bit GPU_INTR_STATUS_QUEUE_0 = 4. IRQ for queue on head A. Unused by Kernel 
Bit GPU_INTR_STATUS_QUEUE_1 = 5. IRQ for queue on head B. Unused by Kernel
|-
|}
----
=== lv1_gpu_attribute ===

Set a GPU attribute.

===== kboot Call =====

 result = lv1_gpu_attribute( /*IN*/ p1, p2, p3, p4, p5 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - unknown
|-
|R4
|p2 - unknown
|-
|R5
|p3 - unknown
|-
|R6
|p4 - unknown
|-
|R7
|p5 - unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|}

Notes:

Code taken from kboot-10\dl\linux-2.6.16\sound\powerpc\snd_ps3pf.c (kboot-20061208)
 ret64 = lv1_gpu_attribute(0x100, 0x007, val, 0, 0);

===== Test Results =====
{| class="wikitable"
|-
!p1
!p2
!p3
!p4
!p5
!Status
|-
|0×100
|0
|0
|0
|0
|-17 (LV1_ILLEGAL_PARAMETER_VALUE)
|-
|0×105
|0
|0
|0
|0
|0 (LV1_SUCCESS)
|-
|0×202
|0
|0
|0
|0
|0 (LV1_SUCCESS)
|-
|0×400
|0
|0
|0
|0
|0 (LV1_SUCCESS)
|-
|0×401
|0
|0
|0
|0
|0 (LV1_SUCCESS)
|-
|0×402
|0
|0
|0
|0
|0 (LV1_SUCCESS)
|-
|0×403
|0
|0
|0
|0
|0 (LV1_SUCCESS)
|-
|other values in 0-0×1000000
|0
|0
|0
|0
|-20 (LV1_NOT_IMPLEMENTED)
|-
|}
----
=== lv1_undocumented_function_229 ===

Existed in PAL 1.7. Returned -17 (LV1_ILLEGAL_PARAMETER_VALUE) when passed 0 in R3 to R10.

Does not exist as of PAL 3.15.
----
=== lv1_undocumented_function_230 ===

Exists in PAL 3.15. Unknown function; found in 3.15 HV dump.
----
=== lv1_undocumented_function_231 ===

Exists in PAL 1.7. Returns -17 (LV1_ILLEGAL_PARAMETER_VALUE), 100000000000000h, 9000000000000000h, C000000000537EF8h, F09B89AF5001h, D0000000002B3084h in R3 to R8 when passed 0 in R3 to R10.
----
=== lv1_get_rtc ===

Gets the current value of the PS3’s real time clock and time base value.

===== Kernel Call =====

 result = lv1_get_rtc( /*OUT*/ &rtc_val, &tb_val );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|rtc_val - real time clock value
|-
|R5
|tb_val - time base value
|-
|}
----
=== lv1_undocumented_function ===

Exists in PAL 3.15. Unknown function; found in 3.15 HV dump.
----
=== lv1_set_ppe_periodic_tracer_frequency ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_set_ppe_periodic_tracer_frequency( /*IN*/ p1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_start_ppe_periodic_tracer ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_start_ppe_periodic_tracer( /*IN*/ p1, p2, p3, p4, p5 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - unknown
|-
|R4
|p2 - unknown
|-
|R5
|p3 - unknown
|-
|R6
|p4 - unknown
|-
|R7
|p5 - unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|}
----
=== lv1_stop_ppe_periodic_tracer ===

Not used in current kernel.

===== Abstract Call =====

 result = lv1_stop_ppe_periodic_tracer( /*IN*/ p1, /*OUT*/ &v1 );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|p1 - unknown
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status?
|-
|R4
|v1 - Unknown
|-
|}
----
=== lv1_undocumented_function_243 ===

Exists in PAL 1.7. Returns -6 (LV1_NO_ENTRY) when passed 0 in R3 to R10.
----
=== lv1_undocumented_function_244 ===

Exists in PAL 1.7. Returns 0 (LV1_SUCCESS) when passed 0 in R3 to R10.
----
=== lv1_storage_read ===

Read a buffer of data from the specified device.

===== Kernel Call =====

 result = lv1_storage_read( /*IN*/ dev_id, region_id, start_sector, sector_count, 0, buffer, /*OUT*/ &lv1_tag );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|dev_id - device id
|-
|R4
|region_id - ?
|-
|R5
|start_sector - start sector of read
|-
|R6
|sector_count - number of sectors to read
|-
|R7
|0 - ? comment says /* flags */
|-
|R8
|buffer - lpar address of buffer
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|lv1_tag - tag to identify operation?
|-
|}
----
=== lv1_storage_write ===

Write a buffer of data to the specified device.

===== Kernel Call =====

 result = lv1_storage_write( /*IN*/ dev_id, region_id, start_sector, sector_count, 0, buffer, /*OUT*/ &lv1_tag );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|dev_id - device id
|-
|R4
|region_id - ?
|-
|R5
|start_sector - start sector of write
|-
|R6
|sector_count - number of sectors to write
|-
|R7
|0 - ? comment says /* flags */
|-
|R8
|buffer - lpar address of buffer
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|lv1_tag - tag to identify operation?
|-
|}

Notes:	 The buffer address must be nonzero – even if zero is an otherwise valid address.
----
=== lv1_undocumented_function_247 ===

Exists in PAL 1.7. Returns -11 (LV1_WRONG_STATE) when passed 0 in R3 to R10.
Does not exist as of PAL 3.15.
----
=== lv1_storage_send_device_command ===

Send a command to the specified device.

===== Kernel Call =====

 result = lv1_storage_send_device_command( /*IN*/ dev_id, cmd_id, cmd_block, cmd_size, data_buffer, blocks, /*OUT*/ &lv1_tag );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|dev_id - device id
|-
|R4
|cmd_id - see notes
|-
|R5
|cmd_block - lpar address of command block?
|-
|R6
|cmd_size - size of command block?
|-
|R7
|data_buffer - lpar address of data buffer?
|-
|R8
|blocks - number of data blocks?
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|lv1_tag - tag to identify operation?
|-
|}

Notes:

Command ids specified in ps3_storage.h:
{| class="wikitable"
|-
!Command
!cmd_id
|-
|LV1_STORAGE_SEND_ATAPI_COMMAND
|0x01
|-
|LV1_STORAGE_ATA_HDDOUT
|0x23
|-
|}
----
=== lv1_storage_get_async_status ===

Get status of asynchronous storage operations for the specified device?

===== Kernel Call =====

 result = lv1_storage_get_async_status( /*IN*/ dev_id, /*OUT*/ &lv1_tag, &lv1_status );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|dev_id - device id
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|lv1_tag - tag to identify operation?
|-
|R5
|lv1_status - 0 = OK, else error
|-
|}
----
=== lv1_undocumented_function_250 ===
Storage device

Exists in PAL 1.7. Returns -11 (LV1_WRONG_STATE) when passed 0 in R3 to R10.
----

=== lv1_undocumented_function_251 ===
Storage device

Exists in PAL 1.7. Returns -11 (LV1_WRONG_STATE) when passed 0 in R3 to R10.
----

=== lv1_undocumented_function_252 ===
Storage device

Exists in PAL 1.7. Returns -11 (LV1_WRONG_STATE) when passed 0 in R3 to R10.
----

=== lv1_undocumented_function_253 ===
Storage device

Exists in PAL 1.7. Returns -11 (LV1_WRONG_STATE) when passed 0 in R3 to R10.
----

=== lv1_storage_check_async_status ===

Check status of an asynchronous storage operation on the specified device.

===== Kernel Call =====

 result = lv1_storage_check_async_status( /*IN*/ dev_id, lv1_tag, /*OUT*/ &lv1_status );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|dev_id - device id
|-
|R4
|lv1_tag - tag to identify operation?
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
|R3
|Status - 0 = OK, Other values are unknown, but indicate failure.
|-
|R4
|lv1_status - 0 = OK, else error
|-
|}
----
=== lv1_panic ===

Panic! Causes the OtherOS to be halted.

===== Kernel Call =====

 lv1_panic( /*IN*/ reboot );

===== Parameters =====
{| class="wikitable"
|-
! colspan="2" | Inputs
|-
!Register
!Description
|-
|R3
|reboot: 0 = power off, 1 = reboot after panic
|-
! colspan="2" | Outputs
|-
!Register
!Description
|-
! colspan="2" |It is not expected that this call returns, so no Outputs.
|-
|}

Notes:

This hypervisor call causes the PS3 to shutdown immediately, without performing any cleanup or callbacks. Remember to sync filesystems before calling this function!

It seems that any non-zero value in R3 causes a reboot after panic, rather than just 1.

The code in the kernel does all manner of things to actually reboot, including sending vuart messages to some other process running in a different LPAR. I haven’t investigated enough to see exactly what it does, but calling lv1_panic(0) from my my code in the hypervisor causes a panic with the red light flashing until the power button is pressed whereas the kernel’s shutdown code doesn’t.