/*
* 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 "priv.h"
#include <subdev/gsp.h>
#include <nvhw/drf.h>
#include <nvrm/nvtypes.h>
#include <nvrm/535.113.01/common/sdk/nvidia/inc/class/cl84a0.h>
#include <nvrm/535.113.01/common/sdk/nvidia/inc/ctrl/ctrl2080/ctrl2080internal.h>
#include <nvrm/535.113.01/common/sdk/nvidia/inc/nvos.h>
#include <nvrm/535.113.01/nvidia/generated/g_fbsr_nvoc.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>
struct fbsr_item {
const char *type;
u64 addr;
u64 size;
struct list_head head;
};
struct fbsr {
struct list_head items;
u64 size;
int regions;
struct nvkm_gsp_client client;
struct nvkm_gsp_device device;
u64 hmemory;
u64 sys_offset;
};
static int
fbsr_memlist(struct nvkm_gsp_device *device, u32 handle, enum nvkm_memory_target aper,
u64 phys, u64 size, struct sg_table *sgt, struct nvkm_gsp_object *object)
{
struct nvkm_gsp_client *client = device->object.client;
struct nvkm_gsp *gsp = client->gsp;
const u32 pages = size / GSP_PAGE_SIZE;
rpc_alloc_memory_v13_01 *rpc;
int ret;
rpc = nvkm_gsp_rpc_get(gsp, NV_VGPU_MSG_FUNCTION_ALLOC_MEMORY,
sizeof(*rpc) + pages * sizeof(rpc->pteDesc.pte_pde[0]));
if (IS_ERR(rpc))
return PTR_ERR(rpc);
rpc->hClient = client->object.handle;
rpc->hDevice = device->object.handle;
rpc->hMemory = handle;
if (aper == NVKM_MEM_TARGET_HOST) {
rpc->hClass = NV01_MEMORY_LIST_SYSTEM;
rpc->flags = NVDEF(NVOS02, FLAGS, PHYSICALITY, NONCONTIGUOUS) |
NVDEF(NVOS02, FLAGS, LOCATION, PCI) |
NVDEF(NVOS02, FLAGS, MAPPING, NO_MAP);
} else {
rpc->hClass = NV01_MEMORY_LIST_FBMEM;
rpc->flags = NVDEF(NVOS02, FLAGS, PHYSICALITY, CONTIGUOUS) |
NVDEF(NVOS02, FLAGS, LOCATION, VIDMEM) |
NVDEF(NVOS02, FLAGS, MAPPING, NO_MAP);
rpc->format = 6; /* NV_MMU_PTE_KIND_GENERIC_MEMORY */
}
rpc->pteAdjust = 0;
rpc->length = size;
rpc->pageCount = pages;
rpc->pteDesc.idr = 0;
rpc->pteDesc.reserved1 = 0;
rpc->pteDesc.length = pages;
if (sgt) {
struct scatterlist *sgl;
int pte = 0, idx;
for_each_sgtable_dma_sg(sgt, sgl, idx) {
for (int i = 0; i < sg_dma_len(sgl) / GSP_PAGE_SIZE; i++)
rpc->pteDesc.pte_pde[pte++].pte = (sg_dma_address(sgl) >> 12) + i;
}
} else {
for (int i = 0; i < pages; i++)
rpc->pteDesc.pte_pde[i].pte = (phys >> 12) + i;
}
ret = nvkm_gsp_rpc_wr(gsp, rpc, true);
if (ret)
return ret;
object->client = device->object.client;
object->parent = &device->object;
object->handle = handle;
return 0;
}
static int
fbsr_send(struct fbsr *fbsr, struct fbsr_item *item)
{
NV2080_CTRL_INTERNAL_FBSR_SEND_REGION_INFO_PARAMS *ctrl;
struct nvkm_gsp *gsp = fbsr->client.gsp;
struct nvkm_gsp_object memlist;
int ret;
ret = fbsr_memlist(&fbsr->device, fbsr->hmemory, NVKM_MEM_TARGET_VRAM,
item->addr, item->size, NULL, &memlist);
if (ret)
return ret;
ctrl = nvkm_gsp_rm_ctrl_get(&gsp->internal.device.subdevice,
NV2080_CTRL_CMD_INTERNAL_FBSR_SEND_REGION_INFO,
sizeof(*ctrl));
if (IS_ERR(ctrl)) {
ret = PTR_ERR(ctrl);
goto done;
}
ctrl->fbsrType = FBSR_TYPE_DMA;
ctrl->hClient = fbsr->client.object.handle;
ctrl->hVidMem = fbsr->hmemory++;
ctrl->vidOffset = 0;
ctrl->sysOffset = fbsr->sys_offset;
ctrl->size = item->size;
ret = nvkm_gsp_rm_ctrl_wr(&gsp->internal.device.subdevice, ctrl);
done:
nvkm_gsp_rm_free(&memlist);
if (ret)
return ret;
fbsr->sys_offset += item->size;
return 0;
}
static int
fbsr_init(struct fbsr *fbsr, struct sg_table *sgt, u64 items_size)
{
NV2080_CTRL_INTERNAL_FBSR_INIT_PARAMS *ctrl;
struct nvkm_gsp *gsp = fbsr->client.gsp;
struct nvkm_gsp_object memlist;
int ret;
ret = fbsr_memlist(&fbsr->device, fbsr->hmemory, NVKM_MEM_TARGET_HOST,
0, fbsr->size, sgt, &memlist);
if (ret)
return ret;
ctrl = nvkm_gsp_rm_ctrl_get(&gsp->internal.device.subdevice,
NV2080_CTRL_CMD_INTERNAL_FBSR_INIT, sizeof(*ctrl));
if (IS_ERR(ctrl))
return PTR_ERR(ctrl);
ctrl->fbsrType = FBSR_TYPE_DMA;
ctrl->numRegions = fbsr->regions;
ctrl->hClient = fbsr->client.object.handle;
ctrl->hSysMem = fbsr->hmemory++;
ctrl->gspFbAllocsSysOffset = items_size;
ret = nvkm_gsp_rm_ctrl_wr(&gsp->internal.device.subdevice, ctrl);
if (ret)
return ret;
nvkm_gsp_rm_free(&memlist);
return 0;
}
static bool
fbsr_vram(struct fbsr *fbsr, const char *type, u64 addr, u64 size)
{
struct fbsr_item *item;
if (!(item = kzalloc(sizeof(*item), GFP_KERNEL)))
return false;
item->type = type;
item->addr = addr;
item->size = size;
list_add_tail(&item->head, &fbsr->items);
return true;
}
static bool
fbsr_inst(struct fbsr *fbsr, const char *type, struct nvkm_memory *memory)
{
return fbsr_vram(fbsr, type, nvkm_memory_addr(memory), nvkm_memory_size(memory));
}
static void
r535_instmem_resume(struct nvkm_instmem *imem)
{
/* RM has restored VRAM contents already, so just need to free the sysmem buffer. */
if (imem->rm.fbsr_valid) {
nvkm_gsp_sg_free(imem->subdev.device, &imem->rm.fbsr);
imem->rm.fbsr_valid = false;
}
}
static int
r535_instmem_suspend(struct nvkm_instmem *imem)
{
struct nvkm_subdev *subdev = &imem->subdev;
struct nvkm_device *device = subdev->device;
struct nvkm_gsp *gsp = device->gsp;
struct nvkm_instobj *iobj;
struct fbsr fbsr = {};
struct fbsr_item *item, *temp;
u64 items_size;
int ret;
INIT_LIST_HEAD(&fbsr.items);
fbsr.hmemory = 0xcaf00003;
/* Create a list of all regions we need RM to save during suspend. */
list_for_each_entry(iobj, &imem->list, head) {
if (iobj->preserve) {
if (!fbsr_inst(&fbsr, "inst", &iobj->memory))
return -ENOMEM;
}
}
list_for_each_entry(iobj, &imem->boot, head) {
if (!fbsr_inst(&fbsr, "boot", &iobj->memory))
return -ENOMEM;
}
if (!fbsr_vram(&fbsr, "gsp-non-wpr", gsp->fb.heap.addr, gsp->fb.heap.size))
return -ENOMEM;
/* Determine memory requirements. */
list_for_each_entry(item, &fbsr.items, head) {
nvkm_debug(subdev, "fbsr: %016llx %016llx %s\n",
item->addr, item->size, item->type);
fbsr.size += item->size;
fbsr.regions++;
}
items_size = fbsr.size;
nvkm_debug(subdev, "fbsr: %d regions (0x%llx bytes)\n", fbsr.regions, items_size);
fbsr.size += gsp->fb.rsvd_size;
fbsr.size += gsp->fb.bios.vga_workspace.size;
nvkm_debug(subdev, "fbsr: size: 0x%llx bytes\n", fbsr.size);
ret = nvkm_gsp_sg(gsp->subdev.device, fbsr.size, &imem->rm.fbsr);
if (ret)
goto done;
/* Tell RM about the sysmem which will hold VRAM contents across suspend. */
ret = nvkm_gsp_client_device_ctor(gsp, &fbsr.client, &fbsr.device);
if (ret)
goto done_sgt;
ret = fbsr_init(&fbsr, &imem->rm.fbsr, items_size);
if (WARN_ON(ret))
goto done_sgt;
/* Send VRAM regions that need saving. */
list_for_each_entry(item, &fbsr.items, head) {
ret = fbsr_send(&fbsr, item);
if (WARN_ON(ret))
goto done_sgt;
}
imem->rm.fbsr_valid = true;
/* Cleanup everything except the sysmem backup, which will be removed after resume. */
done_sgt:
if (ret) /* ... unless we failed already. */
nvkm_gsp_sg_free(device, &imem->rm.fbsr);
done:
list_for_each_entry_safe(item, temp, &fbsr.items, head) {
list_del(&item->head);
kfree(item);
}
nvkm_gsp_device_dtor(&fbsr.device);
nvkm_gsp_client_dtor(&fbsr.client);
return ret;
}
static void *
r535_instmem_dtor(struct nvkm_instmem *imem)
{
kfree(imem->func);
return imem;
}
int
r535_instmem_new(const struct nvkm_instmem_func *hw,
struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
struct nvkm_instmem **pinstmem)
{
struct nvkm_instmem_func *rm;
int ret;
if (!(rm = kzalloc(sizeof(*rm), GFP_KERNEL)))
return -ENOMEM;
rm->dtor = r535_instmem_dtor;
rm->fini = hw->fini;
rm->suspend = r535_instmem_suspend;
rm->resume = r535_instmem_resume;
rm->memory_new = hw->memory_new;
rm->memory_wrap = hw->memory_wrap;
rm->zero = false;
ret = nv50_instmem_new_(rm, device, type, inst, pinstmem);
if (ret)
kfree(rm);
return ret;
}
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