From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: michal.simek@xilinx.com Subject: Re: [PATCH 2/5] firmware: xilinx: Add shutdown/wakeup APIs References: <1582566751-13118-1-git-send-email-ben.levinsky@xilinx.com> <1582566751-13118-3-git-send-email-ben.levinsky@xilinx.com> From: Michal Simek Message-ID: <1a88df22-b4f3-215a-1232-4e94cf4a8929@xilinx.com> Date: Thu, 12 Mar 2020 08:34:04 +0100 MIME-Version: 1.0 In-Reply-To: <1582566751-13118-3-git-send-email-ben.levinsky@xilinx.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit To: Ben Levinsky , ohad@wizery.com, bjorn.andersson@linaro.org, michal.simek@xilinx.com, jollys@xilinx.com, rajan.vaja@xilinx.com, robh+dt@kernel.org, mark.rutland@arm.com Cc: linux-remoteproc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-ID: On 24. 02. 20 18:52, Ben Levinsky wrote: > Add shutdown/wakeup a resource eemi operations to shutdown > or bringup a resource. > > Signed-off-by: Ben Levinsky > --- > drivers/firmware/xilinx/zynqmp.c | 35 +++++++++++++++++++++++++++++++++++ > include/linux/firmware/xlnx-zynqmp.h | 8 ++++++++ > 2 files changed, 43 insertions(+) > > diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c > index 20e4574..486dcb1 100644 > --- a/drivers/firmware/xilinx/zynqmp.c > +++ b/drivers/firmware/xilinx/zynqmp.c > @@ -692,6 +692,39 @@ static int zynqmp_pm_release_node(const u32 node) > } > > /** > + * zynqmp_pm_force_powerdown - PM call to request for another PU or subsystem to > + * be powered down forcefully > + * @target: Node ID of the targeted PU or subsystem > + * @ack: Flag to specify whether acknowledge is requested > + * > + * Return: Returns status, either success or error+reason > + */ > +static int zynqmp_pm_force_powerdown(const u32 target, > + const enum zynqmp_pm_request_ack ack) > +{ > + return zynqmp_pm_invoke_fn(PM_FORCE_POWERDOWN, target, ack, 0, 0, NULL); > +} > + > +/** > + * zynqmp_pm_request_wakeup - PM call to wake up selected master or subsystem > + * @node: Node ID of the master or subsystem > + * @set_addr: Specifies whether the address argument is relevant > + * @address: Address from which to resume when woken up > + * @ack: Flag to specify whether acknowledge requested > + * > + * Return: Returns status, either success or error+reason > + */ > +static int zynqmp_pm_request_wakeup(const u32 node, > + const bool set_addr, > + const u64 address, > + const enum zynqmp_pm_request_ack ack) > +{ > + /* set_addr flag is encoded into 1st bit of address */ > + return zynqmp_pm_invoke_fn(PM_REQUEST_WAKEUP, node, address | set_addr, > + address >> 32, ack, NULL); > +} > + > +/** > * zynqmp_pm_set_requirement() - PM call to set requirement for PM slaves > * @node: Node ID of the slave > * @capabilities: Requested capabilities of the slave > @@ -731,6 +764,8 @@ static const struct zynqmp_eemi_ops eemi_ops = { > .set_suspend_mode = zynqmp_pm_set_suspend_mode, > .request_node = zynqmp_pm_request_node, > .release_node = zynqmp_pm_release_node, > + .force_powerdown = zynqmp_pm_force_powerdown, > + .request_wakeup = zynqmp_pm_request_wakeup, > .set_requirement = zynqmp_pm_set_requirement, > .fpga_load = zynqmp_pm_fpga_load, > .fpga_get_status = zynqmp_pm_fpga_get_status, > diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h > index b8ca118..0a68849 100644 > --- a/include/linux/firmware/xlnx-zynqmp.h > +++ b/include/linux/firmware/xlnx-zynqmp.h > @@ -82,6 +82,8 @@ enum pm_api_id { > PM_CLOCK_GETRATE, > PM_CLOCK_SETPARENT, > PM_CLOCK_GETPARENT, > + PM_FORCE_POWERDOWN = 8, > + PM_REQUEST_WAKEUP = 10, > PM_FEATURE_CHECK = 63, > PM_API_MAX, > }; > @@ -330,6 +332,12 @@ struct zynqmp_eemi_ops { > const u32 qos, > const enum zynqmp_pm_request_ack ack); > int (*release_node)(const u32 node); > + int (*force_powerdown)(const u32 target, > + const enum zynqmp_pm_request_ack ack); > + int (*request_wakeup)(const u32 node, > + const bool set_addr, > + const u64 address, > + const enum zynqmp_pm_request_ack ack); > int (*set_requirement)(const u32 node, > const u32 capabilities, > const u32 qos, > Please work with Jolly on this one. Based on her discussion with Greg we should stop to call eemi ops from drivers. Take a look at https://lkml.org/lkml/2020/3/6/1128 This will affect at least patch 5/5. 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Thu, 12 Mar 2020 07:34:20 +0000 Received: from unknown-38-66.xilinx.com ([149.199.38.66] helo=xsj-pvapsmtp01) by xsj-pvapsmtpgw01 with esmtp (Exim 4.63) (envelope-from ) id 1jCIMG-0008MH-4h; Thu, 12 Mar 2020 00:34:20 -0700 Received: from [127.0.0.1] (helo=localhost) by xsj-pvapsmtp01 with smtp (Exim 4.63) (envelope-from ) id 1jCIMB-0003vO-19; Thu, 12 Mar 2020 00:34:15 -0700 Received: from [172.30.17.108] by xsj-pvapsmtp01 with esmtp (Exim 4.63) (envelope-from ) id 1jCIM3-0003tn-Vy; Thu, 12 Mar 2020 00:34:08 -0700 Subject: Re: [PATCH 2/5] firmware: xilinx: Add shutdown/wakeup APIs To: Ben Levinsky , ohad@wizery.com, bjorn.andersson@linaro.org, michal.simek@xilinx.com, jollys@xilinx.com, rajan.vaja@xilinx.com, robh+dt@kernel.org, mark.rutland@arm.com References: <1582566751-13118-1-git-send-email-ben.levinsky@xilinx.com> <1582566751-13118-3-git-send-email-ben.levinsky@xilinx.com> From: Michal Simek Message-ID: <1a88df22-b4f3-215a-1232-4e94cf4a8929@xilinx.com> Date: Thu, 12 Mar 2020 08:34:04 +0100 User-Agent: Mozilla/5.0 (X11; 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Ip=[149.199.60.83]; Helo=[xsj-pvapsmtpgw01] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR0201MB3442 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200312_003422_854120_1C950D4D X-CRM114-Status: GOOD ( 20.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 24. 02. 20 18:52, Ben Levinsky wrote: > Add shutdown/wakeup a resource eemi operations to shutdown > or bringup a resource. > > Signed-off-by: Ben Levinsky > --- > drivers/firmware/xilinx/zynqmp.c | 35 +++++++++++++++++++++++++++++++++++ > include/linux/firmware/xlnx-zynqmp.h | 8 ++++++++ > 2 files changed, 43 insertions(+) > > diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c > index 20e4574..486dcb1 100644 > --- a/drivers/firmware/xilinx/zynqmp.c > +++ b/drivers/firmware/xilinx/zynqmp.c > @@ -692,6 +692,39 @@ static int zynqmp_pm_release_node(const u32 node) > } > > /** > + * zynqmp_pm_force_powerdown - PM call to request for another PU or subsystem to > + * be powered down forcefully > + * @target: Node ID of the targeted PU or subsystem > + * @ack: Flag to specify whether acknowledge is requested > + * > + * Return: Returns status, either success or error+reason > + */ > +static int zynqmp_pm_force_powerdown(const u32 target, > + const enum zynqmp_pm_request_ack ack) > +{ > + return zynqmp_pm_invoke_fn(PM_FORCE_POWERDOWN, target, ack, 0, 0, NULL); > +} > + > +/** > + * zynqmp_pm_request_wakeup - PM call to wake up selected master or subsystem > + * @node: Node ID of the master or subsystem > + * @set_addr: Specifies whether the address argument is relevant > + * @address: Address from which to resume when woken up > + * @ack: Flag to specify whether acknowledge requested > + * > + * Return: Returns status, either success or error+reason > + */ > +static int zynqmp_pm_request_wakeup(const u32 node, > + const bool set_addr, > + const u64 address, > + const enum zynqmp_pm_request_ack ack) > +{ > + /* set_addr flag is encoded into 1st bit of address */ > + return zynqmp_pm_invoke_fn(PM_REQUEST_WAKEUP, node, address | set_addr, > + address >> 32, ack, NULL); > +} > + > +/** > * zynqmp_pm_set_requirement() - PM call to set requirement for PM slaves > * @node: Node ID of the slave > * @capabilities: Requested capabilities of the slave > @@ -731,6 +764,8 @@ static const struct zynqmp_eemi_ops eemi_ops = { > .set_suspend_mode = zynqmp_pm_set_suspend_mode, > .request_node = zynqmp_pm_request_node, > .release_node = zynqmp_pm_release_node, > + .force_powerdown = zynqmp_pm_force_powerdown, > + .request_wakeup = zynqmp_pm_request_wakeup, > .set_requirement = zynqmp_pm_set_requirement, > .fpga_load = zynqmp_pm_fpga_load, > .fpga_get_status = zynqmp_pm_fpga_get_status, > diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h > index b8ca118..0a68849 100644 > --- a/include/linux/firmware/xlnx-zynqmp.h > +++ b/include/linux/firmware/xlnx-zynqmp.h > @@ -82,6 +82,8 @@ enum pm_api_id { > PM_CLOCK_GETRATE, > PM_CLOCK_SETPARENT, > PM_CLOCK_GETPARENT, > + PM_FORCE_POWERDOWN = 8, > + PM_REQUEST_WAKEUP = 10, > PM_FEATURE_CHECK = 63, > PM_API_MAX, > }; > @@ -330,6 +332,12 @@ struct zynqmp_eemi_ops { > const u32 qos, > const enum zynqmp_pm_request_ack ack); > int (*release_node)(const u32 node); > + int (*force_powerdown)(const u32 target, > + const enum zynqmp_pm_request_ack ack); > + int (*request_wakeup)(const u32 node, > + const bool set_addr, > + const u64 address, > + const enum zynqmp_pm_request_ack ack); > int (*set_requirement)(const u32 node, > const u32 capabilities, > const u32 qos, > Please work with Jolly on this one. Based on her discussion with Greg we should stop to call eemi ops from drivers. Take a look at https://lkml.org/lkml/2020/3/6/1128 This will affect at least patch 5/5. Thanks, Michal _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel