lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Sat,  1 Feb 2014 12:16:57 +0900
From:	Alexandre Courbot <acourbot@...dia.com>
To:	Ben Skeggs <bskeggs@...hat.com>, nouveau@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Cc:	Terje Bergstrom <tbergstrom@...dia.com>,
	Ken Adams <KAdams@...dia.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Eric Brower <ebrower@...dia.com>, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org, gnurou@...il.com,
	Alexandre Courbot <acourbot@...dia.com>
Subject: [RFC 15/16] drm/nouveau: support GK20A in nouveau_accel_init()

GK20A does not embed a dedicated COPY engine and thus cannot allocate
the copy channel that nouveau_accel_init() attempts to create. It also
lacks any display hardware, so the creation of a software channel does
not apply neither.

Signed-off-by: Alexandre Courbot <acourbot@...dia.com>
---
 drivers/gpu/drm/nouveau/nouveau_drm.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 8d55a50..87bdf04 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -171,6 +171,11 @@ nouveau_accel_init(struct nouveau_drm *drm)
 		return;
 	}
 
+	if (device->chipset == 0xea) {
+		/* gk20a does not have CE0/CE1 */
+		arg0 = NVE0_CHANNEL_IND_ENGINE_GR;
+		arg1 = 1;
+	} else
 	if (device->card_type >= NV_E0) {
 		ret = nouveau_channel_new(drm, &drm->client, NVDRM_DEVICE,
 					  NVDRM_CHAN + 1,
@@ -207,6 +212,10 @@ nouveau_accel_init(struct nouveau_drm *drm)
 		return;
 	}
 
+	/* Need to figure out how to handle sw for gk20a */
+	if (device->chipset == 0xea)
+		goto skip_sw_init;
+
 	ret = nouveau_object_new(nv_object(drm), NVDRM_CHAN, NVDRM_NVSW,
 				 nouveau_abi16_swclass(drm), NULL, 0, &object);
 	if (ret == 0) {
@@ -233,6 +242,7 @@ nouveau_accel_init(struct nouveau_drm *drm)
 		return;
 	}
 
+skip_sw_init:
 	if (device->card_type < NV_C0) {
 		ret = nouveau_gpuobj_new(drm->device, NULL, 32, 0, 0,
 					&drm->notify);
-- 
1.8.5.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists