From: Tero Kristo <t-kristo@ti.com> To: bjorn.andersson@linaro.org, ohad@wizery.com, linux-remoteproc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, mathieu.poirier@linaro.org, s-anna@ti.com, linux-omap@vger.kernel.org, Tero Kristo <t-kristo@ti.com> Subject: [PATCHv5 06/14] remoteproc/omap: Initialize and assign reserved memory node Date: Thu, 16 Jan 2020 15:53:24 +0200 [thread overview] Message-ID: <20200116135332.7819-7-t-kristo@ti.com> (raw) In-Reply-To: <20200116135332.7819-1-t-kristo@ti.com> From: Suman Anna <s-anna@ti.com> The reserved memory nodes are not assigned to platform devices by default in the driver core to avoid the lookup for every platform device and incur a penalty as the real users are expected to be only a few devices. OMAP remoteproc devices fall into the above category and the OMAP remoteproc driver _requires_ specific CMA pools to be assigned for each device at the moment to align on the location of the vrings and vring buffers in the RTOS-side firmware images. So, use the of_reserved_mem_device_init/release() API appropriately to assign the corresponding reserved memory region to the OMAP remoteproc device. Note that only one region per device is allowed by the framework. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Tero Kristo <t-kristo@ti.com> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> --- v5: no changes drivers/remoteproc/omap_remoteproc.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/omap_remoteproc.c b/drivers/remoteproc/omap_remoteproc.c index 0846839b2c97..194303b860b2 100644 --- a/drivers/remoteproc/omap_remoteproc.c +++ b/drivers/remoteproc/omap_remoteproc.c @@ -17,6 +17,7 @@ #include <linux/module.h> #include <linux/err.h> #include <linux/of_device.h> +#include <linux/of_reserved_mem.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/remoteproc.h> @@ -480,14 +481,22 @@ static int omap_rproc_probe(struct platform_device *pdev) if (ret) goto free_rproc; + ret = of_reserved_mem_device_init(&pdev->dev); + if (ret) { + dev_err(&pdev->dev, "device does not have specific CMA pool\n"); + goto free_rproc; + } + platform_set_drvdata(pdev, rproc); ret = rproc_add(rproc); if (ret) - goto free_rproc; + goto release_mem; return 0; +release_mem: + of_reserved_mem_device_release(&pdev->dev); free_rproc: rproc_free(rproc); return ret; @@ -499,6 +508,7 @@ static int omap_rproc_remove(struct platform_device *pdev) rproc_del(rproc); rproc_free(rproc); + of_reserved_mem_device_release(&pdev->dev); return 0; } -- 2.17.1 -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
WARNING: multiple messages have this Message-ID (diff)
From: Tero Kristo <t-kristo@ti.com> To: <bjorn.andersson@linaro.org>, <ohad@wizery.com>, <linux-remoteproc@vger.kernel.org> Cc: <linux-kernel@vger.kernel.org>, <mathieu.poirier@linaro.org>, <s-anna@ti.com>, <linux-omap@vger.kernel.org>, Tero Kristo <t-kristo@ti.com> Subject: [PATCHv5 06/14] remoteproc/omap: Initialize and assign reserved memory node Date: Thu, 16 Jan 2020 15:53:24 +0200 [thread overview] Message-ID: <20200116135332.7819-7-t-kristo@ti.com> (raw) In-Reply-To: <20200116135332.7819-1-t-kristo@ti.com> From: Suman Anna <s-anna@ti.com> The reserved memory nodes are not assigned to platform devices by default in the driver core to avoid the lookup for every platform device and incur a penalty as the real users are expected to be only a few devices. OMAP remoteproc devices fall into the above category and the OMAP remoteproc driver _requires_ specific CMA pools to be assigned for each device at the moment to align on the location of the vrings and vring buffers in the RTOS-side firmware images. So, use the of_reserved_mem_device_init/release() API appropriately to assign the corresponding reserved memory region to the OMAP remoteproc device. Note that only one region per device is allowed by the framework. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Tero Kristo <t-kristo@ti.com> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> --- v5: no changes drivers/remoteproc/omap_remoteproc.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/omap_remoteproc.c b/drivers/remoteproc/omap_remoteproc.c index 0846839b2c97..194303b860b2 100644 --- a/drivers/remoteproc/omap_remoteproc.c +++ b/drivers/remoteproc/omap_remoteproc.c @@ -17,6 +17,7 @@ #include <linux/module.h> #include <linux/err.h> #include <linux/of_device.h> +#include <linux/of_reserved_mem.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/remoteproc.h> @@ -480,14 +481,22 @@ static int omap_rproc_probe(struct platform_device *pdev) if (ret) goto free_rproc; + ret = of_reserved_mem_device_init(&pdev->dev); + if (ret) { + dev_err(&pdev->dev, "device does not have specific CMA pool\n"); + goto free_rproc; + } + platform_set_drvdata(pdev, rproc); ret = rproc_add(rproc); if (ret) - goto free_rproc; + goto release_mem; return 0; +release_mem: + of_reserved_mem_device_release(&pdev->dev); free_rproc: rproc_free(rproc); return ret; @@ -499,6 +508,7 @@ static int omap_rproc_remove(struct platform_device *pdev) rproc_del(rproc); rproc_free(rproc); + of_reserved_mem_device_release(&pdev->dev); return 0; } -- 2.17.1 -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
next prev parent reply other threads:[~2020-01-16 13:53 UTC|newest] Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-01-16 13:53 [PATCHv5 00/14] remoteproc: updates for omap remoteproc support Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 01/14] dt-bindings: remoteproc: Add OMAP remoteproc bindings Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-22 2:34 ` Rob Herring 2020-01-22 2:34 ` Rob Herring 2020-01-22 2:34 ` Rob Herring 2020-01-16 13:53 ` [PATCHv5 02/14] remoteproc/omap: Add device tree support Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 03/14] remoteproc/omap: Add a sanity check for DSP boot address alignment Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 04/14] remoteproc/omap: Add support to parse internal memories from DT Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 05/14] remoteproc/omap: Add the rproc ops .da_to_va() implementation Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` Tero Kristo [this message] 2020-01-16 13:53 ` [PATCHv5 06/14] remoteproc/omap: Initialize and assign reserved memory node Tero Kristo 2020-01-30 18:11 ` Andrew F. Davis 2020-01-30 18:11 ` Andrew F. Davis 2020-01-30 19:18 ` Tero Kristo 2020-01-30 19:18 ` Tero Kristo 2020-01-30 19:20 ` Andrew F. Davis 2020-01-30 19:20 ` Andrew F. Davis 2020-01-30 19:42 ` Tero Kristo 2020-01-30 19:42 ` Tero Kristo 2020-01-30 19:55 ` Suman Anna 2020-01-30 19:55 ` Suman Anna 2020-01-30 20:22 ` Andrew F. Davis 2020-01-30 20:22 ` Andrew F. Davis 2020-01-30 20:39 ` Suman Anna 2020-01-30 20:39 ` Suman Anna 2020-01-30 21:19 ` Andrew F. Davis 2020-01-30 21:19 ` Andrew F. Davis 2020-01-30 21:39 ` Suman Anna 2020-01-30 21:39 ` Suman Anna 2020-01-30 21:50 ` Andrew F. Davis 2020-01-30 21:50 ` Andrew F. Davis 2020-01-30 21:57 ` Suman Anna 2020-01-30 21:57 ` Suman Anna 2020-01-30 22:06 ` Suman Anna 2020-01-30 22:06 ` Suman Anna 2020-01-30 23:04 ` Andrew F. Davis 2020-01-30 23:04 ` Andrew F. Davis 2020-02-05 8:51 ` Tero Kristo 2020-02-05 8:51 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 07/14] remoteproc/omap: Add support for DRA7xx remote processors Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 08/14] remoteproc/omap: remove the platform_data header Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 09/14] remoteproc/omap: Check for undefined mailbox messages Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 10/14] remoteproc/omap: Request a timer(s) for remoteproc usage Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 11/14] remoteproc/omap: add support for system suspend/resume Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 12/14] remoteproc/omap: add support for runtime auto-suspend/resume Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 13/14] remoteproc/omap: report device exceptions and trigger recovery Tero Kristo 2020-01-16 13:53 ` Tero Kristo 2020-01-16 13:53 ` [PATCHv5 14/14] remoteproc/omap: add watchdog functionality for remote processors Tero Kristo 2020-01-16 13:53 ` Tero Kristo
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