diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bar/r535.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bar/r535.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/r535.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/r535.c new file mode 100644 index 000000000..3a30bea30 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/r535.c @@ -0,0 +1,185 @@ +/* + * Copyright 2023 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. + */ +#include "gf100.h" + +#include <core/mm.h> +#include <subdev/fb.h> +#include <subdev/gsp.h> +#include <subdev/instmem.h> +#include <subdev/mmu/vmm.h> + +#include <nvrm/nvtypes.h> +#include <nvrm/535.113.01/nvidia/generated/g_rpc-structures.h> +#include <nvrm/535.113.01/nvidia/kernel/inc/vgpu/rpc_global_enums.h> +#include <nvrm/535.113.01/nvidia/kernel/inc/vgpu/rpc_headers.h> + +static void +r535_bar_flush(struct nvkm_bar *bar) +{ + ioread32_native(bar->flushBAR2); +} + +static void +r535_bar_bar2_wait(struct nvkm_bar *base) +{ +} + +static int +r535_bar_bar2_update_pde(struct nvkm_gsp *gsp, u64 addr) +{ + rpc_update_bar_pde_v15_00 *rpc; + + rpc = nvkm_gsp_rpc_get(gsp, NV_VGPU_MSG_FUNCTION_UPDATE_BAR_PDE, sizeof(*rpc)); + if (WARN_ON(IS_ERR_OR_NULL(rpc))) + return -EIO; + + rpc->info.barType = NV_RPC_UPDATE_PDE_BAR_2; + rpc->info.entryValue = addr ? ((addr >> 4) | 2) : 0; /* PD3 entry format! */ + rpc->info.entryLevelShift = 47; //XXX: probably fetch this from mmu! + + return nvkm_gsp_rpc_wr(gsp, rpc, true); +} + +static void +r535_bar_bar2_fini(struct nvkm_bar *bar) +{ + struct nvkm_gsp *gsp = bar->subdev.device->gsp; + + bar->flushBAR2 = bar->flushBAR2PhysMode; + nvkm_done(bar->flushFBZero); + + WARN_ON(r535_bar_bar2_update_pde(gsp, 0)); +} + +static void +r535_bar_bar2_init(struct nvkm_bar *bar) +{ + struct nvkm_device *device = bar->subdev.device; + struct nvkm_vmm *vmm = gf100_bar(bar)->bar[0].vmm; + struct nvkm_gsp *gsp = device->gsp; + + WARN_ON(r535_bar_bar2_update_pde(gsp, vmm->pd->pde[0]->pt[0]->addr)); + vmm->rm.bar2_pdb = gsp->bar.rm_bar2_pdb; + + if (!bar->flushFBZero) { + struct nvkm_memory *fbZero; + int ret; + + ret = nvkm_ram_wrap(device, 0, 0x1000, &fbZero); + if (ret == 0) { + ret = nvkm_memory_kmap(fbZero, &bar->flushFBZero); + nvkm_memory_unref(&fbZero); + } + WARN_ON(ret); + } + + bar->bar2 = true; + bar->flushBAR2 = nvkm_kmap(bar->flushFBZero); + WARN_ON(!bar->flushBAR2); +} + +static void +r535_bar_bar1_wait(struct nvkm_bar *base) +{ +} + +static void +r535_bar_bar1_fini(struct nvkm_bar *base) +{ +} + +static void +r535_bar_bar1_init(struct nvkm_bar *bar) +{ + struct nvkm_device *device = bar->subdev.device; + struct nvkm_gsp *gsp = device->gsp; + struct nvkm_vmm *vmm = gf100_bar(bar)->bar[1].vmm; + struct nvkm_memory *pd3; + int ret; + + ret = nvkm_ram_wrap(device, gsp->bar.rm_bar1_pdb, 0x1000, &pd3); + if (WARN_ON(ret)) + return; + + nvkm_memory_unref(&vmm->pd->pt[0]->memory); + + ret = nvkm_memory_kmap(pd3, &vmm->pd->pt[0]->memory); + nvkm_memory_unref(&pd3); + if (WARN_ON(ret)) + return; + + vmm->pd->pt[0]->addr = nvkm_memory_addr(vmm->pd->pt[0]->memory); +} + +static void * +r535_bar_dtor(struct nvkm_bar *bar) +{ + void *data = gf100_bar_dtor(bar); + + nvkm_memory_unref(&bar->flushFBZero); + + if (bar->flushBAR2PhysMode) + iounmap(bar->flushBAR2PhysMode); + + kfree(bar->func); + return data; +} + +int +r535_bar_new_(const struct nvkm_bar_func *hw, struct nvkm_device *device, + enum nvkm_subdev_type type, int inst, struct nvkm_bar **pbar) +{ + struct nvkm_bar_func *rm; + struct nvkm_bar *bar; + int ret; + + if (!(rm = kzalloc(sizeof(*rm), GFP_KERNEL))) + return -ENOMEM; + + rm->dtor = r535_bar_dtor; + rm->oneinit = hw->oneinit; + rm->bar1.init = r535_bar_bar1_init; + rm->bar1.fini = r535_bar_bar1_fini; + rm->bar1.wait = r535_bar_bar1_wait; + rm->bar1.vmm = hw->bar1.vmm; + rm->bar2.init = r535_bar_bar2_init; + rm->bar2.fini = r535_bar_bar2_fini; + rm->bar2.wait = r535_bar_bar2_wait; + rm->bar2.vmm = hw->bar2.vmm; + rm->flush = r535_bar_flush; + + ret = gf100_bar_new_(rm, device, type, inst, &bar); + if (ret) { + kfree(rm); + return ret; + } + *pbar = bar; + + bar->flushBAR2PhysMode = ioremap(device->func->resource_addr(device, 3), PAGE_SIZE); + if (!bar->flushBAR2PhysMode) + return -ENOMEM; + + bar->flushBAR2 = bar->flushBAR2PhysMode; + + gf100_bar(*pbar)->bar2_halve = true; + return 0; +} |