From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
To: linux-acpi@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Will Deacon <will.deacon@arm.com>,
Robert Moore <robert.moore@intel.com>,
Robin Murphy <robin.murphy@arm.com>,
Hanjun Guo <hanjun.guo@linaro.org>, Feng Kan <fkan@apm.com>,
Jon Masters <jcm@redhat.com>, Zhang Rui <rui.zhang@intel.com>,
Nate Watterson <nwatters@codeaurora.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>
Subject: [PATCH v3 1/5] ACPICA: resource_mgr: Allow _DMA method in walk resources
Date: Thu, 3 Aug 2017 13:32:35 +0100 [thread overview]
Message-ID: <20170803123239.11359-2-lorenzo.pieralisi@arm.com> (raw)
In-Reply-To: <20170803123239.11359-1-lorenzo.pieralisi@arm.com>
ACPICA commit 7636d2fb683d5699a5c14e949fba9ac52e91d4c1
The _DMA object contains a resource template, this change adds support
for the walk resources function so that ACPI devices containing a _DMA
object can actually parse it to detect DMA ranges for the respective
bus.
Link: https://github.com/acpica/acpica/commit/7636d2fb
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
---
drivers/acpi/acpica/rsxface.c | 7 ++++---
include/acpi/acnames.h | 1 +
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c
index 59a4f9e..be65e65 100644
--- a/drivers/acpi/acpica/rsxface.c
+++ b/drivers/acpi/acpica/rsxface.c
@@ -615,7 +615,7 @@ ACPI_EXPORT_SYMBOL(acpi_walk_resource_buffer)
* device we are querying
* name - Method name of the resources we want.
* (METHOD_NAME__CRS, METHOD_NAME__PRS, or
- * METHOD_NAME__AEI)
+ * METHOD_NAME__AEI or METHOD_NAME__DMA)
* user_function - Called for each resource
* context - Passed to user_function
*
@@ -641,11 +641,12 @@ acpi_walk_resources(acpi_handle device_handle,
if (!device_handle || !user_function || !name ||
(!ACPI_COMPARE_NAME(name, METHOD_NAME__CRS) &&
!ACPI_COMPARE_NAME(name, METHOD_NAME__PRS) &&
- !ACPI_COMPARE_NAME(name, METHOD_NAME__AEI))) {
+ !ACPI_COMPARE_NAME(name, METHOD_NAME__AEI) &&
+ !ACPI_COMPARE_NAME(name, METHOD_NAME__DMA))) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- /* Get the _CRS/_PRS/_AEI resource list */
+ /* Get the _CRS/_PRS/_AEI/_DMA resource list */
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_rs_get_method_data(device_handle, name, &buffer);
diff --git a/include/acpi/acnames.h b/include/acpi/acnames.h
index b421584..d8dd3bf 100644
--- a/include/acpi/acnames.h
+++ b/include/acpi/acnames.h
@@ -54,6 +54,7 @@
#define METHOD_NAME__CLS "_CLS"
#define METHOD_NAME__CRS "_CRS"
#define METHOD_NAME__DDN "_DDN"
+#define METHOD_NAME__DMA "_DMA"
#define METHOD_NAME__HID "_HID"
#define METHOD_NAME__INI "_INI"
#define METHOD_NAME__PLD "_PLD"
--
2.10.0
next prev parent reply other threads:[~2017-08-03 12:30 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-03 12:32 [PATCH v3 0/5] ACPI: DMA ranges management Lorenzo Pieralisi
2017-08-03 12:32 ` Lorenzo Pieralisi [this message]
2017-08-03 12:32 ` [PATCH v3 2/5] ACPI: Make acpi_dev_get_resources() method agnostic Lorenzo Pieralisi
2017-08-03 12:32 ` [PATCH v3 3/5] ACPI: Introduce DMA ranges parsing Lorenzo Pieralisi
2017-08-06 5:12 ` kbuild test robot
2017-08-06 9:42 ` Lorenzo Pieralisi
2017-08-06 11:21 ` Rafael J. Wysocki
2017-08-03 12:32 ` [PATCH v3 4/5] ACPI: Make acpi_dma_configure() DMA regions aware Lorenzo Pieralisi
2017-08-03 12:32 ` [PATCH v3 5/5] ACPI/IORT: Add IORT named component memory address limits Lorenzo Pieralisi
2017-08-03 13:25 ` [PATCH v3 0/5] ACPI: DMA ranges management Hanjun Guo
2017-08-03 15:16 ` Will Deacon
2017-08-03 15:45 ` Nate Watterson
2017-08-03 17:21 ` Robin Murphy
2017-08-09 21:14 ` Jeremy Linton
2017-08-11 8:52 ` Lorenzo Pieralisi
2017-08-14 18:41 ` Feng Kan
2017-11-30 7:28 ` Feng Kan
2017-12-01 0:43 ` Feng Kan
2017-12-01 10:39 ` Lorenzo Pieralisi
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