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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvc0_grgpc.fuc')
-rw-r--r--drivers/gpu/drm/nouveau/nvc0_grgpc.fuc474
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diff --git a/drivers/gpu/drm/nouveau/nvc0_grgpc.fuc b/drivers/gpu/drm/nouveau/nvc0_grgpc.fuc
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+/* fuc microcode for nvc0 PGRAPH/GPC
+ *
+ * Copyright 2011 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+
+/* To build:
+ * m4 nvc0_grgpc.fuc | envyas -a -w -m fuc -V nva3 -o nvc0_grgpc.fuc.h
+ */
+
+/* TODO
+ * - bracket certain functions with scratch writes, useful for debugging
+ * - watchdog timer around ctx operations
+ */
+
+.section nvc0_grgpc_data
+include(`nvc0_graph.fuc')
+gpc_id: .b32 0
+gpc_mmio_list_head: .b32 0
+gpc_mmio_list_tail: .b32 0
+
+tpc_count: .b32 0
+tpc_mask: .b32 0
+tpc_mmio_list_head: .b32 0
+tpc_mmio_list_tail: .b32 0
+
+cmd_queue: queue_init
+
+// chipset descriptions
+chipsets:
+.b8 0xc0 0 0 0
+.b16 nvc0_gpc_mmio_head
+.b16 nvc0_gpc_mmio_tail
+.b16 nvc0_tpc_mmio_head
+.b16 nvc0_tpc_mmio_tail
+.b8 0xc1 0 0 0
+.b16 nvc0_gpc_mmio_head
+.b16 nvc1_gpc_mmio_tail
+.b16 nvc0_tpc_mmio_head
+.b16 nvc1_tpc_mmio_tail
+.b8 0xc3 0 0 0
+.b16 nvc0_gpc_mmio_head
+.b16 nvc0_gpc_mmio_tail
+.b16 nvc0_tpc_mmio_head
+.b16 nvc3_tpc_mmio_tail
+.b8 0xc4 0 0 0
+.b16 nvc0_gpc_mmio_head
+.b16 nvc0_gpc_mmio_tail
+.b16 nvc0_tpc_mmio_head
+.b16 nvc3_tpc_mmio_tail
+.b8 0xc8 0 0 0
+.b16 nvc0_gpc_mmio_head
+.b16 nvc0_gpc_mmio_tail
+.b16 nvc0_tpc_mmio_head
+.b16 nvc0_tpc_mmio_tail
+.b8 0xce 0 0 0
+.b16 nvc0_gpc_mmio_head
+.b16 nvc0_gpc_mmio_tail
+.b16 nvc0_tpc_mmio_head
+.b16 nvc3_tpc_mmio_tail
+.b8 0 0 0 0
+
+// GPC mmio lists
+nvc0_gpc_mmio_head:
+mmctx_data(0x000380, 1)
+mmctx_data(0x000400, 6)
+mmctx_data(0x000450, 9)
+mmctx_data(0x000600, 1)
+mmctx_data(0x000684, 1)
+mmctx_data(0x000700, 5)
+mmctx_data(0x000800, 1)
+mmctx_data(0x000808, 3)
+mmctx_data(0x000828, 1)
+mmctx_data(0x000830, 1)
+mmctx_data(0x0008d8, 1)
+mmctx_data(0x0008e0, 1)
+mmctx_data(0x0008e8, 6)
+mmctx_data(0x00091c, 1)
+mmctx_data(0x000924, 3)
+mmctx_data(0x000b00, 1)
+mmctx_data(0x000b08, 6)
+mmctx_data(0x000bb8, 1)
+mmctx_data(0x000c08, 1)
+mmctx_data(0x000c10, 8)
+mmctx_data(0x000c80, 1)
+mmctx_data(0x000c8c, 1)
+mmctx_data(0x001000, 3)
+mmctx_data(0x001014, 1)
+nvc0_gpc_mmio_tail:
+mmctx_data(0x000c6c, 1);
+nvc1_gpc_mmio_tail:
+
+// TPC mmio lists
+nvc0_tpc_mmio_head:
+mmctx_data(0x000018, 1)
+mmctx_data(0x00003c, 1)
+mmctx_data(0x000048, 1)
+mmctx_data(0x000064, 1)
+mmctx_data(0x000088, 1)
+mmctx_data(0x000200, 6)
+mmctx_data(0x00021c, 2)
+mmctx_data(0x000300, 6)
+mmctx_data(0x0003d0, 1)
+mmctx_data(0x0003e0, 2)
+mmctx_data(0x000400, 3)
+mmctx_data(0x000420, 1)
+mmctx_data(0x0004b0, 1)
+mmctx_data(0x0004e8, 1)
+mmctx_data(0x0004f4, 1)
+mmctx_data(0x000520, 2)
+mmctx_data(0x000604, 4)
+mmctx_data(0x000644, 20)
+mmctx_data(0x000698, 1)
+mmctx_data(0x000750, 2)
+nvc0_tpc_mmio_tail:
+mmctx_data(0x000758, 1)
+mmctx_data(0x0002c4, 1)
+mmctx_data(0x0004bc, 1)
+mmctx_data(0x0006e0, 1)
+nvc3_tpc_mmio_tail:
+mmctx_data(0x000544, 1)
+nvc1_tpc_mmio_tail:
+
+
+.section nvc0_grgpc_code
+bra init
+define(`include_code')
+include(`nvc0_graph.fuc')
+
+// reports an exception to the host
+//
+// In: $r15 error code (see nvc0_graph.fuc)
+//
+error:
+ push $r14
+ mov $r14 -0x67ec // 0x9814
+ sethi $r14 0x400000
+ call nv_wr32 // HUB_CTXCTL_CC_SCRATCH[5] = error code
+ add b32 $r14 0x41c
+ mov $r15 1
+ call nv_wr32 // HUB_CTXCTL_INTR_UP_SET
+ pop $r14
+ ret
+
+// GPC fuc initialisation, executed by triggering ucode start, will
+// fall through to main loop after completion.
+//
+// Input:
+// CC_SCRATCH[0]: chipset (PMC_BOOT_0 read returns 0x0bad0bad... sigh)
+// CC_SCRATCH[1]: context base
+//
+// Output:
+// CC_SCRATCH[0]:
+// 31:31: set to signal completion
+// CC_SCRATCH[1]:
+// 31:0: GPC context size
+//
+init:
+ clear b32 $r0
+ mov $sp $r0
+
+ // enable fifo access
+ mov $r1 0x1200
+ mov $r2 2
+ iowr I[$r1 + 0x000] $r2 // FIFO_ENABLE
+
+ // setup i0 handler, and route all interrupts to it
+ mov $r1 ih
+ mov $iv0 $r1
+ mov $r1 0x400
+ iowr I[$r1 + 0x300] $r0 // INTR_DISPATCH
+
+ // enable fifo interrupt
+ mov $r2 4
+ iowr I[$r1 + 0x000] $r2 // INTR_EN_SET
+
+ // enable interrupts
+ bset $flags ie0
+
+ // figure out which GPC we are, and how many TPCs we have
+ mov $r1 0x608
+ shl b32 $r1 6
+ iord $r2 I[$r1 + 0x000] // UNITS
+ mov $r3 1
+ and $r2 0x1f
+ shl b32 $r3 $r2
+ sub b32 $r3 1
+ st b32 D[$r0 + tpc_count] $r2
+ st b32 D[$r0 + tpc_mask] $r3
+ add b32 $r1 0x400
+ iord $r2 I[$r1 + 0x000] // MYINDEX
+ st b32 D[$r0 + gpc_id] $r2
+
+ // find context data for this chipset
+ mov $r2 0x800
+ shl b32 $r2 6
+ iord $r2 I[$r2 + 0x000] // CC_SCRATCH[0]
+ mov $r1 chipsets - 12
+ init_find_chipset:
+ add b32 $r1 12
+ ld b32 $r3 D[$r1 + 0x00]
+ cmpu b32 $r3 $r2
+ bra e init_context
+ cmpu b32 $r3 0
+ bra ne init_find_chipset
+ // unknown chipset
+ ret
+
+ // initialise context base, and size tracking
+ init_context:
+ mov $r2 0x800
+ shl b32 $r2 6
+ iord $r2 I[$r2 + 0x100] // CC_SCRATCH[1], initial base
+ clear b32 $r3 // track GPC context size here
+
+ // set mmctx base addresses now so we don't have to do it later,
+ // they don't currently ever change
+ mov $r4 0x700
+ shl b32 $r4 6
+ shr b32 $r5 $r2 8
+ iowr I[$r4 + 0x000] $r5 // MMCTX_SAVE_SWBASE
+ iowr I[$r4 + 0x100] $r5 // MMCTX_LOAD_SWBASE
+
+ // calculate GPC mmio context size, store the chipset-specific
+ // mmio list pointers somewhere we can get at them later without
+ // re-parsing the chipset list
+ clear b32 $r14
+ clear b32 $r15
+ ld b16 $r14 D[$r1 + 4]
+ ld b16 $r15 D[$r1 + 6]
+ st b16 D[$r0 + gpc_mmio_list_head] $r14
+ st b16 D[$r0 + gpc_mmio_list_tail] $r15
+ call mmctx_size
+ add b32 $r2 $r15
+ add b32 $r3 $r15
+
+ // calculate per-TPC mmio context size, store the list pointers
+ ld b16 $r14 D[$r1 + 8]
+ ld b16 $r15 D[$r1 + 10]
+ st b16 D[$r0 + tpc_mmio_list_head] $r14
+ st b16 D[$r0 + tpc_mmio_list_tail] $r15
+ call mmctx_size
+ ld b32 $r14 D[$r0 + tpc_count]
+ mulu $r14 $r15
+ add b32 $r2 $r14
+ add b32 $r3 $r14
+
+ // round up base/size to 256 byte boundary (for strand SWBASE)
+ add b32 $r4 0x1300
+ shr b32 $r3 2
+ iowr I[$r4 + 0x000] $r3 // MMCTX_LOAD_COUNT, wtf for?!?
+ shr b32 $r2 8
+ shr b32 $r3 6
+ add b32 $r2 1
+ add b32 $r3 1
+ shl b32 $r2 8
+ shl b32 $r3 8
+
+ // calculate size of strand context data
+ mov b32 $r15 $r2
+ call strand_ctx_init
+ add b32 $r3 $r15
+
+ // save context size, and tell HUB we're done
+ mov $r1 0x800
+ shl b32 $r1 6
+ iowr I[$r1 + 0x100] $r3 // CC_SCRATCH[1] = context size
+ add b32 $r1 0x800
+ clear b32 $r2
+ bset $r2 31
+ iowr I[$r1 + 0x000] $r2 // CC_SCRATCH[0] |= 0x80000000
+
+// Main program loop, very simple, sleeps until woken up by the interrupt
+// handler, pulls a command from the queue and executes its handler
+//
+main:
+ bset $flags $p0
+ sleep $p0
+ mov $r13 cmd_queue
+ call queue_get
+ bra $p1 main
+
+ // 0x0000-0x0003 are all context transfers
+ cmpu b32 $r14 0x04
+ bra nc main_not_ctx_xfer
+ // fetch $flags and mask off $p1/$p2
+ mov $r1 $flags
+ mov $r2 0x0006
+ not b32 $r2
+ and $r1 $r2
+ // set $p1/$p2 according to transfer type
+ shl b32 $r14 1
+ or $r1 $r14
+ mov $flags $r1
+ // transfer context data
+ call ctx_xfer
+ bra main
+
+ main_not_ctx_xfer:
+ shl b32 $r15 $r14 16
+ or $r15 E_BAD_COMMAND
+ call error
+ bra main
+
+// interrupt handler
+ih:
+ push $r8
+ mov $r8 $flags
+ push $r8
+ push $r9
+ push $r10
+ push $r11
+ push $r13
+ push $r14
+ push $r15
+
+ // incoming fifo command?
+ iord $r10 I[$r0 + 0x200] // INTR
+ and $r11 $r10 0x00000004
+ bra e ih_no_fifo
+ // queue incoming fifo command for later processing
+ mov $r11 0x1900
+ mov $r13 cmd_queue
+ iord $r14 I[$r11 + 0x100] // FIFO_CMD
+ iord $r15 I[$r11 + 0x000] // FIFO_DATA
+ call queue_put
+ add b32 $r11 0x400
+ mov $r14 1
+ iowr I[$r11 + 0x000] $r14 // FIFO_ACK
+
+ // ack, and wake up main()
+ ih_no_fifo:
+ iowr I[$r0 + 0x100] $r10 // INTR_ACK
+
+ pop $r15
+ pop $r14
+ pop $r13
+ pop $r11
+ pop $r10
+ pop $r9
+ pop $r8
+ mov $flags $r8
+ pop $r8
+ bclr $flags $p0
+ iret
+
+// Set this GPC's bit in HUB_BAR, used to signal completion of various
+// activities to the HUB fuc
+//
+hub_barrier_done:
+ mov $r15 1
+ ld b32 $r14 D[$r0 + gpc_id]
+ shl b32 $r15 $r14
+ mov $r14 -0x6be8 // 0x409418 - HUB_BAR_SET
+ sethi $r14 0x400000
+ call nv_wr32
+ ret
+
+// Disables various things, waits a bit, and re-enables them..
+//
+// Not sure how exactly this helps, perhaps "ENABLE" is not such a
+// good description for the bits we turn off? Anyways, without this,
+// funny things happen.
+//
+ctx_redswitch:
+ mov $r14 0x614
+ shl b32 $r14 6
+ mov $r15 0x020
+ iowr I[$r14] $r15 // GPC_RED_SWITCH = POWER
+ mov $r15 8
+ ctx_redswitch_delay:
+ sub b32 $r15 1
+ bra ne ctx_redswitch_delay
+ mov $r15 0xa20
+ iowr I[$r14] $r15 // GPC_RED_SWITCH = UNK11, ENABLE, POWER
+ ret
+
+// Transfer GPC context data between GPU and storage area
+//
+// In: $r15 context base address
+// $p1 clear on save, set on load
+// $p2 set if opposite direction done/will be done, so:
+// on save it means: "a load will follow this save"
+// on load it means: "a save preceeded this load"
+//
+ctx_xfer:
+ // set context base address
+ mov $r1 0xa04
+ shl b32 $r1 6
+ iowr I[$r1 + 0x000] $r15// MEM_BASE
+ bra not $p1 ctx_xfer_not_load
+ call ctx_redswitch
+ ctx_xfer_not_load:
+
+ // strands
+ mov $r1 0x4afc
+ sethi $r1 0x20000
+ mov $r2 0xc
+ iowr I[$r1] $r2 // STRAND_CMD(0x3f) = 0x0c
+ call strand_wait
+ mov $r2 0x47fc
+ sethi $r2 0x20000
+ iowr I[$r2] $r0 // STRAND_FIRST_GENE(0x3f) = 0x00
+ xbit $r2 $flags $p1
+ add b32 $r2 3
+ iowr I[$r1] $r2 // STRAND_CMD(0x3f) = 0x03/0x04 (SAVE/LOAD)
+
+ // mmio context
+ xbit $r10 $flags $p1 // direction
+ or $r10 2 // first
+ mov $r11 0x0000
+ sethi $r11 0x500000
+ ld b32 $r12 D[$r0 + gpc_id]
+ shl b32 $r12 15
+ add b32 $r11 $r12 // base = NV_PGRAPH_GPCn
+ ld b32 $r12 D[$r0 + gpc_mmio_list_head]
+ ld b32 $r13 D[$r0 + gpc_mmio_list_tail]
+ mov $r14 0 // not multi
+ call mmctx_xfer
+
+ // per-TPC mmio context
+ xbit $r10 $flags $p1 // direction
+ or $r10 4 // last
+ mov $r11 0x4000
+ sethi $r11 0x500000 // base = NV_PGRAPH_GPC0_TPC0
+ ld b32 $r12 D[$r0 + gpc_id]
+ shl b32 $r12 15
+ add b32 $r11 $r12 // base = NV_PGRAPH_GPCn_TPC0
+ ld b32 $r12 D[$r0 + tpc_mmio_list_head]
+ ld b32 $r13 D[$r0 + tpc_mmio_list_tail]
+ ld b32 $r15 D[$r0 + tpc_mask]
+ mov $r14 0x800 // stride = 0x800
+ call mmctx_xfer
+
+ // wait for strands to finish
+ call strand_wait
+
+ // if load, or a save without a load following, do some
+ // unknown stuff that's done after finishing a block of
+ // strand commands
+ bra $p1 ctx_xfer_post
+ bra not $p2 ctx_xfer_done
+ ctx_xfer_post:
+ mov $r1 0x4afc
+ sethi $r1 0x20000
+ mov $r2 0xd
+ iowr I[$r1] $r2 // STRAND_CMD(0x3f) = 0x0d
+ call strand_wait
+
+ // mark completion in HUB's barrier
+ ctx_xfer_done:
+ call hub_barrier_done
+ ret
+
+.align 256