Commit 20e0c197 authored by Timur Tabi's avatar Timur Tabi Committed by Dave Airlie
Browse files

drm/nouveau/gsp: add support for GA100 



GA100 is a compute-only variant of GA102 that boots GSP-RM like a Turing.

Although architecturally like an Ampere, GA100 uses the same GSP-RM
firmware files as Turing, and therefore must boot it like Turing does.
In addition, as a compute-only part, GA100 has no display engine,
no VBIOS, and no graphics (GR) engine.

Since it doesn't have VBIOS, there is no FWSEC firmware, and so there is
no FRTS region that needs to be reserved or initialized.

Although Nouveau now supports GA100, there is currently no real support
for this GPU with either Clover or Rusticl/NVK, as both require a 3D
engine.  This is in contrast with GH100, which does contain a GR engine
and is supported.

Also note that this patch partially reverts commit e8b3627b ("nouveau:
don't attempt fwsec on sb on newer platforms."), which added fwsec
pointers to struct ga100_gsp erroneously.

Signed-off-by: default avatarTimur Tabi <ttabi@nvidia.com>
Acked-by: default avatarJohn Hubbard <jhubbard@nvidia.com>
Reviewed-by: default avatarDave Airlie <airlied@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
Link: https://patch.msgid.link/20260209224036.3283326-1-ttabi@nvidia.com
parent e8bd92c4

drivers/gpu/drm/nouveau/nvkm/engine/device/base.c

+2 −9
Original line number Diff line number Diff line
@@ -2513,7 +2513,6 @@ static const struct nvkm_device_chip 
nv170_chipset = {

	.name = "GA100",

	.bar      = { 0x00000001, tu102_bar_new },

	.bios     = { 0x00000001, nvkm_bios_new },

	.devinit  = { 0x00000001, ga100_devinit_new },

	.fault    = { 0x00000001, tu102_fault_new },

	.fb       = { 0x00000001, ga100_fb_new },
@@ -2530,6 +2529,7 @@ nv170_chipset = { 
	.vfn      = { 0x00000001, ga100_vfn_new },

	.ce       = { 0x000003ff, ga100_ce_new },

	.fifo     = { 0x00000001, ga100_fifo_new },

	.sec2     = { 0x00000001, tu102_sec2_new },

};



static const struct nvkm_device_chip
@@ -3329,6 +3329,7 @@ nvkm_device_ctor(const struct nvkm_device_func *func, 
	case 0x166: device->chip = &nv166_chipset; break;

	case 0x167: device->chip = &nv167_chipset; break;

	case 0x168: device->chip = &nv168_chipset; break;

	case 0x170: device->chip = &nv170_chipset; break;

	case 0x172: device->chip = &nv172_chipset; break;

	case 0x173: device->chip = &nv173_chipset; break;

	case 0x174: device->chip = &nv174_chipset; break;
@@ -3348,14 +3349,6 @@ nvkm_device_ctor(const struct nvkm_device_func *func, 
	case 0x1b6: device->chip = &nv1b6_chipset; break;

	case 0x1b7: device->chip = &nv1b7_chipset; break;

	default:

		if (nvkm_boolopt(device->cfgopt, "NvEnableUnsupportedChipsets", false)) {

			switch (device->chipset) {

			case 0x170: device->chip = &nv170_chipset; break;

			default:

				break;

			}

		}



		if (!device->chip) {

			nvdev_error(device, "unknown chipset (%08x)\n", boot0);

			ret = -ENODEV;

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/ga100.c

+0 −4
Original line number Diff line number Diff line
@@ -41,15 +41,11 @@ ga100_gsp_flcn = { 
static const struct nvkm_gsp_func

ga100_gsp = {

	.flcn = &ga100_gsp_flcn,

	.fwsec = &tu102_gsp_fwsec,



	.sig_section = ".fwsignature_ga100",



	.booter.ctor = tu102_gsp_booter_ctor,



	.fwsec_sb.ctor = tu102_gsp_fwsec_sb_ctor,

	.fwsec_sb.dtor = tu102_gsp_fwsec_sb_dtor,



	.dtor = r535_gsp_dtor,

	.oneinit = tu102_gsp_oneinit,

	.init = tu102_gsp_init,

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/tu102.c

+13 −5
Original line number Diff line number Diff line
@@ -318,8 +318,13 @@ tu102_gsp_oneinit(struct nvkm_gsp *gsp) 
	if (ret)

		return ret;



	/* Calculate FB layout. */

	gsp->fb.wpr2.frts.size = 0x100000;

	/*

	 * Calculate FB layout. FRTS is a memory region created by the FWSEC-FRTS firmware.

	 * FWSEC comes from VBIOS.  So on systems with no VBIOS (e.g. GA100), the FRTS does

	 * not exist.  Therefore, use the existence of VBIOS to determine whether to reserve

	 * an FRTS region.

	 */

	gsp->fb.wpr2.frts.size = device->bios ? 0x100000 : 0;

	gsp->fb.wpr2.frts.addr = ALIGN_DOWN(gsp->fb.bios.addr, 0x20000) - gsp->fb.wpr2.frts.size;



	gsp->fb.wpr2.boot.size = gsp->boot.fw.size;
@@ -343,9 +348,12 @@ tu102_gsp_oneinit(struct nvkm_gsp *gsp) 
	if (ret)

		return ret;



	/* Only boot FWSEC-FRTS if it actually exists */

	if (gsp->fb.wpr2.frts.size) {

		ret = nvkm_gsp_fwsec_frts(gsp);

		if (WARN_ON(ret))

			return ret;

	}



	/* Reset GSP into RISC-V mode. */

	ret = gsp->func->reset(gsp);