diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvc0_grgpc.fuc')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvc0_grgpc.fuc | 474 |
1 files changed, 474 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvc0_grgpc.fuc b/drivers/gpu/drm/nouveau/nvc0_grgpc.fuc new file mode 100644 index 00000000000..0ec2add72a7 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvc0_grgpc.fuc @@ -0,0 +1,474 @@ +/* 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 |