drm/nouveau/gsp/r535: add support for booting GSP-RM

This commit adds the initial code needed to boot the GSP-RM firmware
provided by NVIDIA, bringing with it the beginnings of Ada support.

Until it's had more testing and time to bake, support is disabled by
default (except on Ada).  GSP-RM usage can be enabled by passing the
"config=NvGspRm=1" module option.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918202149.4343-33-skeggsb@gmail.com

1 files changed, 137 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/ga102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/ga102.c
index ec6380f8bac5..19a2b582c661 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/ga102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/ga102.c
@@ -21,7 +21,119 @@
  */
 #include "priv.h"
 
-static const struct nvkm_falcon_func
+#include <nvfw/flcn.h>
+#include <nvfw/fw.h>
+#include <nvfw/hs.h>
+
+int
+ga102_gsp_reset(struct nvkm_gsp *gsp)
+{
+	int ret;
+
+	ret = gsp->falcon.func->reset_eng(&gsp->falcon);
+	if (ret)
+		return ret;
+
+	nvkm_falcon_mask(&gsp->falcon, 0x1668, 0x00000111, 0x00000111);
+	return 0;
+}
+
+int
+ga102_gsp_booter_ctor(struct nvkm_gsp *gsp, const char *name, const struct firmware *blob,
+		      struct nvkm_falcon *falcon, struct nvkm_falcon_fw *fw)
+{
+	struct nvkm_subdev *subdev = &gsp->subdev;
+	const struct nvkm_falcon_fw_func *func = &ga102_flcn_fw;
+	const struct nvfw_bin_hdr *hdr;
+	const struct nvfw_hs_header_v2 *hshdr;
+	const struct nvfw_hs_load_header_v2 *lhdr;
+	u32 loc, sig, cnt, *meta;
+	int ret;
+
+	hdr = nvfw_bin_hdr(subdev, blob->data);
+	hshdr = nvfw_hs_header_v2(subdev, blob->data + hdr->header_offset);
+	meta = (u32 *)(blob->data + hshdr->meta_data_offset);
+	loc = *(u32 *)(blob->data + hshdr->patch_loc);
+	sig = *(u32 *)(blob->data + hshdr->patch_sig);
+	cnt = *(u32 *)(blob->data + hshdr->num_sig);
+
+	ret = nvkm_falcon_fw_ctor(func, name, subdev->device, true,
+				  blob->data + hdr->data_offset, hdr->data_size, falcon, fw);
+	if (ret)
+		goto done;
+
+	ret = nvkm_falcon_fw_sign(fw, loc, hshdr->sig_prod_size / cnt, blob->data,
+				  cnt, hshdr->sig_prod_offset + sig, 0, 0);
+	if (ret)
+		goto done;
+
+	lhdr = nvfw_hs_load_header_v2(subdev, blob->data + hshdr->header_offset);
+
+	fw->imem_base_img = lhdr->app[0].offset;
+	fw->imem_base = 0;
+	fw->imem_size = lhdr->app[0].size;
+
+	fw->dmem_base_img = lhdr->os_data_offset;
+	fw->dmem_base = 0;
+	fw->dmem_size = lhdr->os_data_size;
+	fw->dmem_sign = loc - lhdr->os_data_offset;
+
+	fw->boot_addr = lhdr->app[0].offset;
+
+	fw->fuse_ver = meta[0];
+	fw->engine_id = meta[1];
+	fw->ucode_id = meta[2];
+
+done:
+	if (ret)
+		nvkm_falcon_fw_dtor(fw);
+
+	return ret;
+}
+
+static int
+ga102_gsp_fwsec_signature(struct nvkm_falcon_fw *fw, u32 *src_base_src)
+{
+	struct nvkm_falcon *falcon = fw->falcon;
+	struct nvkm_device *device = falcon->owner->device;
+	u32 sig_fuse_version = fw->fuse_ver;
+	u32 reg_fuse_version;
+	int idx = 0;
+
+	FLCN_DBG(falcon, "brom: %08x %08x", fw->engine_id, fw->ucode_id);
+	FLCN_DBG(falcon, "sig_fuse_version: %08x", sig_fuse_version);
+
+	if (fw->engine_id & 0x00000400) {
+		reg_fuse_version = nvkm_rd32(device, 0x8241c0 + (fw->ucode_id - 1) * 4);
+	} else {
+		WARN_ON(1);
+		return -ENOSYS;
+	}
+
+	FLCN_DBG(falcon, "reg_fuse_version: %08x", reg_fuse_version);
+	reg_fuse_version = BIT(fls(reg_fuse_version));
+	FLCN_DBG(falcon, "reg_fuse_version: %08x", reg_fuse_version);
+	if (!(reg_fuse_version & fw->fuse_ver))
+		return -EINVAL;
+
+	while (!(reg_fuse_version & sig_fuse_version & 1)) {
+		idx += (sig_fuse_version & 1);
+		reg_fuse_version >>= 1;
+		sig_fuse_version >>= 1;
+	}
+
+	return idx;
+}
+
+const struct nvkm_falcon_fw_func
+ga102_gsp_fwsec = {
+	.signature = ga102_gsp_fwsec_signature,
+	.reset = gm200_flcn_fw_reset,
+	.load = ga102_flcn_fw_load,
+	.boot = ga102_flcn_fw_boot,
+};
+
+const struct nvkm_falcon_func
 ga102_gsp_flcn = {
 	.disable = gm200_flcn_disable,
 	.enable = gm200_flcn_enable,
@@ -32,6 +144,29 @@ ga102_gsp_flcn = {
 	.reset_wait_mem_scrubbing = ga102_flcn_reset_wait_mem_scrubbing,
 	.imem_dma = &ga102_flcn_dma,
 	.dmem_dma = &ga102_flcn_dma,
+	.riscv_active = ga102_flcn_riscv_active,
+};
+
+static const struct nvkm_gsp_func
+ga102_gsp_r535_54_03 = {
+	.flcn = &ga102_gsp_flcn,
+	.fwsec = &ga102_gsp_fwsec,
+
+	.sig_section = ".fwsignature_ga10x",
+
+	.wpr_heap.os_carveout_size = 20 << 20,
+	.wpr_heap.base_size = 8 << 20,
+	.wpr_heap.min_size = 84 << 20,
+
+	.booter.ctor = ga102_gsp_booter_ctor,
+
+	.dtor = r535_gsp_dtor,
+	.oneinit = tu102_gsp_oneinit,
+	.init = r535_gsp_init,
+	.fini = r535_gsp_fini,
+	.reset = ga102_gsp_reset,
+
+	.rm = &r535_gsp_rm,
 };
 
 static const struct nvkm_gsp_func
@@ -41,6 +176,7 @@ ga102_gsp = {
 
 static struct nvkm_gsp_fwif
 ga102_gsps[] = {
+	{  0,  r535_gsp_load, &ga102_gsp_r535_54_03, "535.54.03" },
 	{ -1, gv100_gsp_nofw, &ga102_gsp },
 	{}
 };