From: Lee Jones <lee.jones@linaro.org> To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: kernel@stlinux.com, maxime.coquelin@st.com, ohad@wizery.com, devicetree@vger.kernel.org, Nathan_Lynch@mentor.com, f.fainelli@gmail.com, ludovic.barre@st.com, s-anna@ti.com, Lee Jones <lee.jones@linaro.org> Subject: [RESEND v4 2/6] remoteproc: debugfs: Add ability to boot remote processor using debugfs Date: Tue, 24 Nov 2015 13:14:18 +0000 [thread overview] Message-ID: <1448370862-19120-3-git-send-email-lee.jones@linaro.org> (raw) In-Reply-To: <1448370862-19120-1-git-send-email-lee.jones@linaro.org> This functionality is especially useful during the testing phase. When used in conjunction with Mailbox's Test Framework we can trivially conduct end-to-end testing i.e. boot co-processor, send and receive messages to the co-processor, then shut it down again (repeat as required). Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> --- drivers/remoteproc/remoteproc_debugfs.c | 34 +++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/remoteproc/remoteproc_debugfs.c b/drivers/remoteproc/remoteproc_debugfs.c index 9d30809..8113c18 100644 --- a/drivers/remoteproc/remoteproc_debugfs.c +++ b/drivers/remoteproc/remoteproc_debugfs.c @@ -88,8 +88,42 @@ static ssize_t rproc_state_read(struct file *filp, char __user *userbuf, return simple_read_from_buffer(userbuf, count, ppos, buf, i); } +static ssize_t rproc_state_write(struct file *filp, const char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct rproc *rproc = filp->private_data; + char buf[10]; + int ret; + + if (count > sizeof(buf)) + return count; + + ret = copy_from_user(buf, userbuf, count); + if (ret) + return -EFAULT; + + if (buf[count - 1] == '\n') + buf[count - 1] = '\0'; + + if (!strncmp(buf, "start", count)) { + ret = rproc_boot(rproc); + if (ret) { + dev_err(&rproc->dev, "Boot failed: %d\n", ret); + return ret; + } + } else if (!strncmp(buf, "stop", count)) { + rproc_shutdown(rproc); + } else { + dev_err(&rproc->dev, "Unrecognised option: %s\n", buf); + return -EINVAL; + } + + return count; +} + static const struct file_operations rproc_state_ops = { .read = rproc_state_read, + .write = rproc_state_write, .open = simple_open, .llseek = generic_file_llseek, }; -- 1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: lee.jones@linaro.org (Lee Jones) To: linux-arm-kernel@lists.infradead.org Subject: [RESEND v4 2/6] remoteproc: debugfs: Add ability to boot remote processor using debugfs Date: Tue, 24 Nov 2015 13:14:18 +0000 [thread overview] Message-ID: <1448370862-19120-3-git-send-email-lee.jones@linaro.org> (raw) In-Reply-To: <1448370862-19120-1-git-send-email-lee.jones@linaro.org> This functionality is especially useful during the testing phase. When used in conjunction with Mailbox's Test Framework we can trivially conduct end-to-end testing i.e. boot co-processor, send and receive messages to the co-processor, then shut it down again (repeat as required). Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> --- drivers/remoteproc/remoteproc_debugfs.c | 34 +++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/remoteproc/remoteproc_debugfs.c b/drivers/remoteproc/remoteproc_debugfs.c index 9d30809..8113c18 100644 --- a/drivers/remoteproc/remoteproc_debugfs.c +++ b/drivers/remoteproc/remoteproc_debugfs.c @@ -88,8 +88,42 @@ static ssize_t rproc_state_read(struct file *filp, char __user *userbuf, return simple_read_from_buffer(userbuf, count, ppos, buf, i); } +static ssize_t rproc_state_write(struct file *filp, const char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct rproc *rproc = filp->private_data; + char buf[10]; + int ret; + + if (count > sizeof(buf)) + return count; + + ret = copy_from_user(buf, userbuf, count); + if (ret) + return -EFAULT; + + if (buf[count - 1] == '\n') + buf[count - 1] = '\0'; + + if (!strncmp(buf, "start", count)) { + ret = rproc_boot(rproc); + if (ret) { + dev_err(&rproc->dev, "Boot failed: %d\n", ret); + return ret; + } + } else if (!strncmp(buf, "stop", count)) { + rproc_shutdown(rproc); + } else { + dev_err(&rproc->dev, "Unrecognised option: %s\n", buf); + return -EINVAL; + } + + return count; +} + static const struct file_operations rproc_state_ops = { .read = rproc_state_read, + .write = rproc_state_write, .open = simple_open, .llseek = generic_file_llseek, }; -- 1.9.1
next prev parent reply other threads:[~2015-11-24 13:16 UTC|newest] Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-11-24 13:14 [RESEND v4 0/6] remoteproc: Add driver for STMicroelectronics platforms Lee Jones 2015-11-24 13:14 ` Lee Jones 2015-11-24 13:14 ` Lee Jones 2015-11-24 13:14 ` [RESEND v4 1/6] remoteproc: dt: Provide bindings for ST's Remote Processor Controller driver Lee Jones 2015-11-24 13:14 ` Lee Jones 2015-11-24 13:14 ` Lee Jones 2015-11-25 0:07 ` Rob Herring 2015-11-25 0:07 ` Rob Herring 2015-12-28 18:33 ` Bjorn Andersson 2015-12-28 18:33 ` Bjorn Andersson 2015-12-28 18:33 ` Bjorn Andersson 2015-11-24 13:14 ` Lee Jones [this message] 2015-11-24 13:14 ` [RESEND v4 2/6] remoteproc: debugfs: Add ability to boot remote processor using debugfs Lee Jones 2015-11-27 17:00 ` Bjorn Andersson 2015-11-27 17:00 ` Bjorn Andersson 2015-11-27 17:00 ` Bjorn Andersson 2015-12-03 12:26 ` Lee Jones 2015-12-03 12:26 ` Lee Jones 2015-12-03 12:26 ` Lee Jones 2015-12-03 12:49 ` Arnd Bergmann 2015-12-03 12:49 ` Arnd Bergmann 2015-12-03 13:03 ` Lee Jones 2015-12-03 13:03 ` Lee Jones 2015-12-03 13:19 ` Arnd Bergmann 2015-12-03 13:19 ` Arnd Bergmann 2015-12-03 17:28 ` Lee Jones 2015-12-03 17:28 ` Lee Jones 2015-12-03 17:28 ` Lee Jones 2015-12-03 21:12 ` Arnd Bergmann 2015-12-03 21:12 ` Arnd Bergmann 2015-12-03 21:22 ` Bjorn Andersson 2015-12-03 21:22 ` Bjorn Andersson 2015-12-03 21:22 ` Bjorn Andersson 2015-12-04 8:24 ` Lee Jones 2015-12-04 8:24 ` Lee Jones 2015-12-28 18:38 ` Bjorn Andersson 2015-12-28 18:38 ` Bjorn Andersson 2015-12-28 18:38 ` Bjorn Andersson 2016-01-12 10:53 ` Lee Jones 2016-01-12 10:53 ` Lee Jones 2016-01-12 10:53 ` Lee Jones 2015-11-24 13:14 ` [RESEND v4 3/6] remoteproc: Supply controller driver for ST's Remote Processors Lee Jones 2015-11-24 13:14 ` Lee Jones 2015-12-28 18:33 ` Bjorn Andersson 2015-12-28 18:33 ` Bjorn Andersson 2015-12-28 18:33 ` Bjorn Andersson 2015-11-24 13:14 ` [RESEND v4 4/6] MAINTAINERS: Add ST's Remote Processor Driver to ARM/STI ARCHITECTURE Lee Jones 2015-11-24 13:14 ` Lee Jones 2015-11-24 13:14 ` [RESEND v4 5/6] ARM: STiH407: Add nodes for RemoteProc Lee Jones 2015-11-24 13:14 ` Lee Jones 2015-11-24 13:14 ` [RESEND v4 6/6] ARM: STiH407: Move over to using the 'reserved-memory' API for obtaining DMA memory Lee Jones 2015-11-24 13:14 ` Lee Jones 2015-11-26 8:45 ` [RESEND v4 0/6] remoteproc: Add driver for STMicroelectronics platforms Ohad Ben-Cohen 2015-11-26 8:45 ` Ohad Ben-Cohen 2015-11-26 9:10 ` Lee Jones 2015-11-26 9:10 ` Lee Jones 2015-11-26 9:10 ` Lee Jones 2015-11-26 9:32 ` Ohad Ben-Cohen 2015-11-26 9:32 ` Ohad Ben-Cohen 2015-11-26 9:32 ` Ohad Ben-Cohen 2015-12-28 18:41 ` Bjorn Andersson 2015-12-28 18:41 ` Bjorn Andersson 2015-12-28 18:41 ` Bjorn Andersson 2015-12-29 8:23 ` Ohad Ben-Cohen 2015-12-29 8:23 ` Ohad Ben-Cohen 2015-12-29 8:23 ` Ohad Ben-Cohen 2016-01-12 12:30 ` Lee Jones 2016-01-12 12:30 ` Lee Jones
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