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Davis" , "Shah, Tanmay" , Saravana Kannan , Andrew Morton , Bjorn Andersson , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Patrice Chotard , Maxime Coquelin , Alexandre Torgue , Chen-Yu Tsai , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com References: <20250423-dt-memory-region-v2-v2-0-2fbd6ebd3c88@kernel.org> Content-Language: en-US From: Iuliana Prodan In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: AS4P189CA0065.EURP189.PROD.OUTLOOK.COM (2603:10a6:20b:659::8) To DU2PR04MB8774.eurprd04.prod.outlook.com (2603:10a6:10:2e1::21) Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PR04MB8774:EE_|PA4PR04MB7984:EE_ X-MS-Office365-Filtering-Correlation-Id: 90595e85-58d1-491a-5967-08dd8451c6b7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|7416014|376014; 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[   39.805078] Hardware name: NXP i.MX8MPlus EVK board (DT) [   39.810390] pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [   39.817353] pc : __pi_memset_generic+0x50/0x188 [   39.821892] lr : imx_dsp_rproc_prepare+0x3a4/0xea4 [imx_dsp_rproc] [   39.828079] sp : ffff8000853dbb10 [   39.831396] x29: ffff8000853dbb90 x28: 0000000092400000 x27: ffff80007a36d3d8 [   39.838540] x26: ffff0000d0a5e410 x25: ffff80007a36d3f0 x24: 0000000000000004 [   39.845685] x23: ffff0000d5414880 x22: ffff0000d5e1dce8 x21: 0000000000000000 [   39.852827] x20: ffff0000d5e1db98 x19: ffff0000d5414b80 x18: 00000000ffffffff [   39.859970] x17: 202c656c69687720 x16: 3e2074756f657672 x15: ffff800081f8d050 [   39.867114] x14: ffff0000db584680 x13: 0000000000000003 x12: 00007fffa3330000 [   39.874257] x11: 0000000000000004 x10: 0000000000000ab0 x9 : 0000000000000000 [   39.881400] x8 : ffffffffffffffea x7 : 0000000000000000 x6 : 000000000000003f [   39.888546] x5 : 0000000000000040 x4 : 0000000000000006 x3 : 0000000000000004 [   39.895689] x2 : 0000000000008000 x1 : 0000000000000000 x0 : ffffffffffffffea [   39.902837] Call trace: [   39.905284]  __pi_memset_generic+0x50/0x188 (P) [   39.909821]  rproc_boot+0x2c0/0x524 [   39.913317]  state_store+0x40/0x100 [   39.916812]  dev_attr_store+0x18/0x2c [   39.920478]  sysfs_kf_write+0x7c/0x94 [   39.924146]  kernfs_fop_write_iter+0x120/0x1e8 [   39.928598]  vfs_write+0x244/0x37c [   39.932008]  ksys_write+0x70/0x110 [   39.935413]  __arm64_sys_write+0x1c/0x28 [   39.939342]  invoke_syscall+0x48/0x104 [   39.943094]  el0_svc_common.constprop.0+0xc0/0xe0 [   39.947805]  do_el0_svc+0x1c/0x28 [   39.951123]  el0_svc+0x30/0xcc [   39.954188]  el0t_64_sync_handler+0x10c/0x138 [   39.958549]  el0t_64_sync+0x198/0x19c [   39.962222] Code: d65f03c0 cb0803e4 f2400c84 54000080 (a9001d07) [   39.968317] ---[ end trace 0000000000000000 ]--- The problem seems to be when computing `cpu_addr = devm_ioremap_resource_wc(dev, &res);`, in patch 4. In `__devm_ioremap_resource` (see [1]), it's expecting the resource type to be `IORESOURCE_MEM`, which is not the case here (at least the flags are nowhere set for this). A quick fix would be to let the `cpu_addr` be calculated as before: `cpu_addr = devm_ioremap_wc(dev, res.start, resource_size(&res));`. Thanks, Iulia [1] https://elixir.bootlin.com/linux/v6.14.3/source/lib/devres.c#L134 On 4/24/2025 5:14 PM, Mathieu Poirier wrote: > Arnaud, Daniel, Iuliana, Andrew and Tanmay - please test this patchset > on the platforms you are working on. > > Thanks, > Mathieu > > On Wed, 23 Apr 2025 at 13:42, Rob Herring (Arm) wrote: >> While there's a common function to parse "memory-region" properties for >> DMA pool regions, there's not anything for driver private regions. As a >> result, drivers have resorted to parsing "memory-region" properties >> themselves repeating the same pattern over and over. To fix this, this >> series adds 2 functions to handle those cases: >> of_reserved_mem_region_to_resource() and of_reserved_mem_region_count(). >> >> I've converted the whole tree, but just including remoteproc here as >> it has the most cases. I intend to apply the first 3 patches for 6.16 >> so the driver conversions can be applied for 6.17. >> >> A git tree with all the drivers converted is here[1]. >> >> v2: >> - Fix of_dma_set_restricted_buffer() to maintain behavior on warning msg >> - Export devm_ioremap_resource_wc() >> - Rework handling of resource name to drop unit-address from name as it >> was before. >> - Link to v1: >> https://lore.kernel.org/all/20250317232426.952188-1-robh@kernel.org >> >> [1] git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git dt/memory-region >> >> Signed-off-by: Rob Herring (Arm) >> --- >> Rob Herring (Arm) (4): >> of: reserved_mem: Add functions to parse "memory-region" >> of: Simplify of_dma_set_restricted_buffer() to use of_for_each_phandle() >> devres: Export devm_ioremap_resource_wc() >> remoteproc: Use of_reserved_mem_region_* functions for "memory-region" >> >> drivers/of/device.c | 31 +++++------- >> drivers/of/of_reserved_mem.c | 80 +++++++++++++++++++++++++++++++ >> drivers/remoteproc/imx_dsp_rproc.c | 45 +++++++---------- >> drivers/remoteproc/imx_rproc.c | 68 +++++++++++--------------- >> drivers/remoteproc/qcom_q6v5_adsp.c | 24 ++++------ >> drivers/remoteproc/qcom_q6v5_mss.c | 60 ++++++++--------------- >> drivers/remoteproc/qcom_q6v5_pas.c | 69 ++++++++++---------------- >> drivers/remoteproc/qcom_q6v5_wcss.c | 25 ++++------ >> drivers/remoteproc/qcom_wcnss.c | 23 ++++----- >> drivers/remoteproc/rcar_rproc.c | 36 ++++++-------- >> drivers/remoteproc/st_remoteproc.c | 41 ++++++++-------- >> drivers/remoteproc/stm32_rproc.c | 44 ++++++++--------- >> drivers/remoteproc/ti_k3_dsp_remoteproc.c | 28 +++++------ >> drivers/remoteproc/ti_k3_m4_remoteproc.c | 28 +++++------ >> drivers/remoteproc/ti_k3_r5_remoteproc.c | 28 +++++------ >> drivers/remoteproc/xlnx_r5_remoteproc.c | 51 ++++++++------------ >> include/linux/of_reserved_mem.h | 26 ++++++++++ >> lib/devres.c | 1 + >> 18 files changed, 339 insertions(+), 369 deletions(-) >> --- >> base-commit: 0af2f6be1b4281385b618cb86ad946eded089ac8 >> change-id: 20250423-dt-memory-region-v2-a2b15caacc63 >> >> Best regards, >> -- >> Rob Herring (Arm) >>