From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5D9B41C5783; Tue, 27 Aug 2024 15:14:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724771646; cv=none; b=s9yFEGGdvqEhdRUR1ldYLqzj7OIhV4y4coQIG1FeTi3EeOVo/TqSDcVCag7soxu6sCGnIBZr1JguW5mzFWXnAw/HfArE36czdNnS3Zye257maadFzscs8iio36g9ilsLgfiKKY+CQcfuqSVH3B0wNPMNMkNnmK76cyw7s7hbW/s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724771646; c=relaxed/simple; bh=YhDdmzIds/CkaSM7d3CCTGz6UqA/1K7e7HSyNZGAWH4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VQ/0T7128mYXGkyi2a1tvHf6m4DF546Z3LACP6gW2+V2HJvP8JJWaK65n4dZwjyirIZO15/eaqE1Lh8LXZriyr2PPN4t8TuuhIksJFskG5kkAmILlgZtuDZ3IasF91F1aJ+GnYbJLfh3IxftR512PY99jTNsz4lv6bQUqwbB5HI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=JozmiFkU; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="JozmiFkU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C2A37C61064; Tue, 27 Aug 2024 15:14:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1724771646; bh=YhDdmzIds/CkaSM7d3CCTGz6UqA/1K7e7HSyNZGAWH4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JozmiFkUpy7eNMSQOq3vTMXK5PDCSflWOaLOwpbR795EJSh8nXIuYl2/ZhXLqmCzR X1l90jenD1WXZOdutpgVCplX106jr2vpJB4s1lwX9leCxv0MwIaTD/JmX1P5ovNelK msHdJEkyy+Fsy72MvororE3VlFdCoKeWxkZPdqi8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dave Airlie , Danilo Krummrich Subject: [PATCH 6.10 251/273] nouveau/firmware: use dma non-coherent allocator Date: Tue, 27 Aug 2024 16:39:35 +0200 Message-ID: <20240827143842.954036326@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240827143833.371588371@linuxfoundation.org> References: <20240827143833.371588371@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dave Airlie commit 9b340aeb26d50e9a9ec99599e2a39b035fac978e upstream. Currently, enabling SG_DEBUG in the kernel will cause nouveau to hit a BUG() on startup, when the iommu is enabled: kernel BUG at include/linux/scatterlist.h:187! invalid opcode: 0000 [#1] PREEMPT SMP NOPTI CPU: 7 PID: 930 Comm: (udev-worker) Not tainted 6.9.0-rc3Lyude-Test+ #30 Hardware name: MSI MS-7A39/A320M GAMING PRO (MS-7A39), BIOS 1.I0 01/22/2019 RIP: 0010:sg_init_one+0x85/0xa0 Code: 69 88 32 01 83 e1 03 f6 c3 03 75 20 a8 01 75 1e 48 09 cb 41 89 54 24 08 49 89 1c 24 41 89 6c 24 0c 5b 5d 41 5c e9 7b b9 88 00 <0f> 0b 0f 0b 0f 0b 48 8b 05 5e 46 9a 01 eb b2 66 66 2e 0f 1f 84 00 RSP: 0018:ffffa776017bf6a0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffa77600d87000 RCX: 000000000000002b RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffa77680d87000 RBP: 000000000000e000 R08: 0000000000000000 R09: 0000000000000000 R10: ffff98f4c46aa508 R11: 0000000000000000 R12: ffff98f4c46aa508 R13: ffff98f4c46aa008 R14: ffffa77600d4a000 R15: ffffa77600d4a018 FS: 00007feeb5aae980(0000) GS:ffff98f5c4dc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f22cb9a4520 CR3: 00000001043ba000 CR4: 00000000003506f0 Call Trace: ? die+0x36/0x90 ? do_trap+0xdd/0x100 ? sg_init_one+0x85/0xa0 ? do_error_trap+0x65/0x80 ? sg_init_one+0x85/0xa0 ? exc_invalid_op+0x50/0x70 ? sg_init_one+0x85/0xa0 ? asm_exc_invalid_op+0x1a/0x20 ? sg_init_one+0x85/0xa0 nvkm_firmware_ctor+0x14a/0x250 [nouveau] nvkm_falcon_fw_ctor+0x42/0x70 [nouveau] ga102_gsp_booter_ctor+0xb4/0x1a0 [nouveau] r535_gsp_oneinit+0xb3/0x15f0 [nouveau] ? srso_return_thunk+0x5/0x5f ? srso_return_thunk+0x5/0x5f ? nvkm_udevice_new+0x95/0x140 [nouveau] ? srso_return_thunk+0x5/0x5f ? srso_return_thunk+0x5/0x5f ? ktime_get+0x47/0xb0 Fix this by using the non-coherent allocator instead, I think there might be a better answer to this, but it involve ripping up some of APIs using sg lists. Cc: stable@vger.kernel.org Fixes: 2541626cfb79 ("drm/nouveau/acr: use common falcon HS FW code for ACR FWs") Signed-off-by: Dave Airlie Signed-off-by: Danilo Krummrich Link: https://patchwork.freedesktop.org/patch/msgid/20240815201923.632803-1-airlied@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/nouveau/nvkm/core/firmware.c | 9 ++++++--- drivers/gpu/drm/nouveau/nvkm/falcon/fw.c | 6 ++++++ 2 files changed, 12 insertions(+), 3 deletions(-) --- a/drivers/gpu/drm/nouveau/nvkm/core/firmware.c +++ b/drivers/gpu/drm/nouveau/nvkm/core/firmware.c @@ -205,7 +205,8 @@ nvkm_firmware_dtor(struct nvkm_firmware break; case NVKM_FIRMWARE_IMG_DMA: nvkm_memory_unref(&memory); - dma_free_coherent(fw->device->dev, sg_dma_len(&fw->mem.sgl), fw->img, fw->phys); + dma_free_noncoherent(fw->device->dev, sg_dma_len(&fw->mem.sgl), + fw->img, fw->phys, DMA_TO_DEVICE); break; case NVKM_FIRMWARE_IMG_SGT: nvkm_memory_unref(&memory); @@ -236,10 +237,12 @@ nvkm_firmware_ctor(const struct nvkm_fir break; case NVKM_FIRMWARE_IMG_DMA: { dma_addr_t addr; - len = ALIGN(fw->len, PAGE_SIZE); - fw->img = dma_alloc_coherent(fw->device->dev, len, &addr, GFP_KERNEL); + fw->img = dma_alloc_noncoherent(fw->device->dev, + len, &addr, + DMA_TO_DEVICE, + GFP_KERNEL); if (fw->img) { memcpy(fw->img, src, fw->len); fw->phys = addr; --- a/drivers/gpu/drm/nouveau/nvkm/falcon/fw.c +++ b/drivers/gpu/drm/nouveau/nvkm/falcon/fw.c @@ -89,6 +89,12 @@ nvkm_falcon_fw_boot(struct nvkm_falcon_f nvkm_falcon_fw_dtor_sigs(fw); } + /* after last write to the img, sync dma mappings */ + dma_sync_single_for_device(fw->fw.device->dev, + fw->fw.phys, + sg_dma_len(&fw->fw.mem.sgl), + DMA_TO_DEVICE); + FLCNFW_DBG(fw, "resetting"); fw->func->reset(fw);