From 2cabefcbd097e27def6d29d52d5d2cf8797c11e4 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 1 Nov 2017 03:56:19 +1000 Subject: [PATCH] drm/nouveau/gr/gf100-: replace hardcoded instance/vmm setup in grctx generation Could be useful for if/when a future GPU removes support for the GF100 PT layout. Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c | 110 ++++++++++++---------- 1 file changed, 58 insertions(+), 52 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c index 8c60b24..8810150 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c @@ -1264,85 +1264,87 @@ gf100_grctx_generate_main(struct gf100_gr *gr, struct gf100_grctx *info) nvkm_mc_unk260(device, 1); } +#define CB_RESERVED 0x80000 + int gf100_grctx_generate(struct gf100_gr *gr) { const struct gf100_grctx_func *grctx = gr->func->grctx; struct nvkm_subdev *subdev = &gr->base.engine.subdev; struct nvkm_device *device = subdev->device; - struct nvkm_memory *chan; + struct nvkm_memory *inst = NULL; + struct nvkm_memory *data = NULL; + struct nvkm_vmm *vmm = NULL; + struct nvkm_vma *ctx = NULL; struct gf100_grctx info; int ret, i; u64 addr; - /* allocate memory to for a "channel", which we'll use to generate - * the default context values + /* Allocate memory to for a "channel", which we'll use to generate + * the default context values. */ - ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x80000 + gr->size, - 0x1000, true, &chan); - if (ret) { - nvkm_error(subdev, "failed to allocate chan memory, %d\n", ret); - return ret; - } + ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, + 0x1000, 0x1000, true, &inst); + if (ret) + goto done; - addr = nvkm_memory_addr(chan); + ret = nvkm_vmm_new(device, 0, 0, NULL, 0, NULL, "grctx", &vmm); + if (ret) + goto done; - /* PGD pointer */ - nvkm_kmap(chan); - nvkm_wo32(chan, 0x0200, lower_32_bits(addr + 0x1000)); - nvkm_wo32(chan, 0x0204, upper_32_bits(addr + 0x1000)); - nvkm_wo32(chan, 0x0208, 0xffffffff); - nvkm_wo32(chan, 0x020c, 0x000000ff); + vmm->debug = subdev->debug; - /* PGT[0] pointer */ - nvkm_wo32(chan, 0x1000, 0x00000000); - nvkm_wo32(chan, 0x1004, 0x00000001 | (addr + 0x2000) >> 8); + ret = nvkm_vmm_join(vmm, inst); + if (ret) + goto done; - /* identity-map the whole "channel" into its own vm */ - for (i = 0; i < nvkm_memory_size(chan) / 4096; i++) { - u64 addr = ((nvkm_memory_addr(chan) + (i * 4096)) >> 8) | 1; - nvkm_wo32(chan, 0x2000 + (i * 8), lower_32_bits(addr)); - nvkm_wo32(chan, 0x2004 + (i * 8), upper_32_bits(addr)); - } + ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, + CB_RESERVED + gr->size, 0, true, &data); + if (ret) + goto done; - /* context pointer (virt) */ - nvkm_wo32(chan, 0x0210, 0x00080004); - nvkm_wo32(chan, 0x0214, 0x00000000); - nvkm_done(chan); + ret = nvkm_vmm_get(vmm, 0, nvkm_memory_size(data), &ctx); + if (ret) + goto done; - nvkm_wr32(device, 0x100cb8, (addr + 0x1000) >> 8); - nvkm_wr32(device, 0x100cbc, 0x80000001); - nvkm_msec(device, 2000, - if (nvkm_rd32(device, 0x100c80) & 0x00008000) - break; - ); + ret = nvkm_memory_map(data, 0, vmm, ctx, NULL, 0); + if (ret) + goto done; + + + /* Setup context pointer. */ + nvkm_kmap(inst); + nvkm_wo32(inst, 0x0210, lower_32_bits(ctx->addr + CB_RESERVED) | 4); + nvkm_wo32(inst, 0x0214, upper_32_bits(ctx->addr + CB_RESERVED)); + nvkm_done(inst); - /* setup default state for mmio list construction */ + /* Setup default state for mmio list construction. */ info.gr = gr; info.data = gr->mmio_data; info.mmio = gr->mmio_list; - info.addr = 0x2000 + (i * 8); + info.addr = ctx->addr; info.buffer_nr = 0; - /* make channel current */ + /* Make channel current. */ + addr = nvkm_memory_addr(inst) >> 12; if (gr->firmware) { nvkm_wr32(device, 0x409840, 0x00000030); - nvkm_wr32(device, 0x409500, 0x80000000 | addr >> 12); + nvkm_wr32(device, 0x409500, 0x80000000 | addr); nvkm_wr32(device, 0x409504, 0x00000003); nvkm_msec(device, 2000, if (nvkm_rd32(device, 0x409800) & 0x00000010) break; ); - nvkm_kmap(chan); - nvkm_wo32(chan, 0x8001c, 1); - nvkm_wo32(chan, 0x80020, 0); - nvkm_wo32(chan, 0x80028, 0); - nvkm_wo32(chan, 0x8002c, 0); - nvkm_done(chan); + nvkm_kmap(data); + nvkm_wo32(data, 0x1c, 1); + nvkm_wo32(data, 0x20, 0); + nvkm_wo32(data, 0x28, 0); + nvkm_wo32(data, 0x2c, 0); + nvkm_done(data); } else { nvkm_wr32(device, 0x409840, 0x80000000); - nvkm_wr32(device, 0x409500, 0x80000000 | addr >> 12); + nvkm_wr32(device, 0x409500, 0x80000000 | addr); nvkm_wr32(device, 0x409504, 0x00000001); nvkm_msec(device, 2000, if (nvkm_rd32(device, 0x409800) & 0x80000000) @@ -1352,8 +1354,8 @@ gf100_grctx_generate(struct gf100_gr *gr) grctx->main(gr, &info); - /* trigger a context unload by unsetting the "next channel valid" bit - * and faking a context switch interrupt + /* Trigger a context unload by unsetting the "next channel valid" bit + * and faking a context switch interrupt. */ nvkm_mask(device, 0x409b04, 0x80000000, 0x00000000); nvkm_wr32(device, 0x409000, 0x00000100); @@ -1367,17 +1369,21 @@ gf100_grctx_generate(struct gf100_gr *gr) gr->data = kmalloc(gr->size, GFP_KERNEL); if (gr->data) { - nvkm_kmap(chan); + nvkm_kmap(data); for (i = 0; i < gr->size; i += 4) - gr->data[i / 4] = nvkm_ro32(chan, 0x80000 + i); - nvkm_done(chan); + gr->data[i / 4] = nvkm_ro32(data, CB_RESERVED + i); + nvkm_done(data); ret = 0; } else { ret = -ENOMEM; } done: - nvkm_memory_unref(&chan); + nvkm_vmm_put(vmm, &ctx); + nvkm_memory_unref(&data); + nvkm_vmm_part(vmm, inst); + nvkm_vmm_unref(&vmm); + nvkm_memory_unref(&inst); return ret; } -- 2.7.4