From: peng.fan@oss.nxp.com
To: ohad@wizery.com, bjorn.andersson@linaro.org,
mathieu.poirier@linaro.org, o.rempel@pengutronix.de
Cc: shawnguo@kernel.org, s.hauer@pengutronix.de,
kernel@pengutronix.de, festevam@gmail.com,
linux-remoteproc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Peng Fan <peng.fan@nxp.com>
Subject: [PATCH V2 4/4] remoteproc: imx_rproc: support remote cores booted before Linux Kernel
Date: Tue, 30 Mar 2021 13:30:35 +0800 [thread overview]
Message-ID: <1617082235-15923-5-git-send-email-peng.fan@oss.nxp.com> (raw)
In-Reply-To: <1617082235-15923-1-git-send-email-peng.fan@oss.nxp.com>
From: Peng Fan <peng.fan@nxp.com>
- Add rsc_table to hold the resource table published by remote cores.
- Add attach hook.
- Add imx_rproc_get_loaded_rsc_table to get resource table published by
remote processors.
- Add imx_rproc_detect_mode to detect remote cores' working mode.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
drivers/remoteproc/imx_rproc.c | 45 ++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index 7cd09971d1a4..d6338872c6db 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -95,6 +95,7 @@ struct imx_rproc {
struct mbox_chan *rx_ch;
struct work_struct rproc_work;
struct workqueue_struct *workqueue;
+ void __iomem *rsc_table;
};
static const struct imx_rproc_att imx_rproc_att_imx8mq[] = {
@@ -395,8 +396,26 @@ static void imx_rproc_kick(struct rproc *rproc, int vqid)
__func__, vqid, err);
}
+static int imx_rproc_attach(struct rproc *rproc)
+{
+ return 0;
+}
+
+static struct resource_table *imx_rproc_get_loaded_rsc_table(struct rproc *rproc, size_t *table_sz)
+{
+ struct imx_rproc *priv = rproc->priv;
+
+ /* The resource table has already been mapped in imx_rproc_addr_init */
+ if (!priv->rsc_table)
+ return NULL;
+
+ *table_sz = SZ_1K;
+ return (struct resource_table *)priv->rsc_table;
+}
+
static const struct rproc_ops imx_rproc_ops = {
.prepare = imx_rproc_prepare,
+ .attach = imx_rproc_attach,
.start = imx_rproc_start,
.stop = imx_rproc_stop,
.kick = imx_rproc_kick,
@@ -404,6 +423,7 @@ static const struct rproc_ops imx_rproc_ops = {
.load = rproc_elf_load_segments,
.parse_fw = imx_rproc_parse_fw,
.find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table,
+ .get_loaded_rsc_table = imx_rproc_get_loaded_rsc_table,
.sanity_check = rproc_elf_sanity_check,
.get_boot_addr = rproc_elf_get_boot_addr,
};
@@ -470,6 +490,8 @@ static int imx_rproc_addr_init(struct imx_rproc *priv,
}
priv->mem[b].sys_addr = res.start;
priv->mem[b].size = resource_size(&res);
+ if (!strcmp(node->name, "rsc_table"))
+ priv->rsc_table = priv->mem[b].cpu_addr;
b++;
}
@@ -536,6 +558,25 @@ static void imx_rproc_free_mbox(struct rproc *rproc)
mbox_free_channel(priv->rx_ch);
}
+static int imx_rproc_detect_mode(struct imx_rproc *priv)
+{
+ const struct imx_rproc_dcfg *dcfg = priv->dcfg;
+ struct device *dev = priv->dev;
+ int ret;
+ u32 val;
+
+ ret = regmap_read(priv->regmap, dcfg->src_reg, &val);
+ if (ret) {
+ dev_err(dev, "Failed to read src\n");
+ return ret;
+ }
+
+ if (!(val & dcfg->src_stop))
+ priv->rproc->state = RPROC_DETACHED;
+
+ return 0;
+}
+
static int imx_rproc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -590,6 +631,10 @@ static int imx_rproc_probe(struct platform_device *pdev)
goto err_put_mbox;
}
+ ret = imx_rproc_detect_mode(priv);
+ if (ret)
+ goto err_put_mbox;
+
priv->clk = devm_clk_get(dev, NULL);
if (IS_ERR(priv->clk)) {
dev_err(dev, "Failed to get clock\n");
--
2.30.0
next prev parent reply other threads:[~2021-03-30 5:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-30 5:30 [PATCH V2 0/4] remoteproc: imx: support remote cores booted early peng.fan
2021-03-30 5:30 ` [PATCH V2 1/4] remoteproc: imx: add missing of_node_put peng.fan
2021-04-07 16:29 ` Mathieu Poirier
2021-03-30 5:30 ` [PATCH V2 2/4] remoteproc: imx_rproc: enlarge IMX7D_RPROC_MEM_MAX peng.fan
2021-03-30 5:30 ` [PATCH V2 3/4] remoteproc: imx: move memory parsing to rproc_ops peng.fan
2021-04-07 16:36 ` Mathieu Poirier
2021-04-07 16:59 ` Mathieu Poirier
2021-03-30 5:30 ` peng.fan [this message]
2021-04-07 17:03 ` [PATCH V2 4/4] remoteproc: imx_rproc: support remote cores booted before Linux Kernel Mathieu Poirier
2021-04-14 2:20 ` [PATCH V2 0/4] remoteproc: imx: support remote cores booted early patchwork-bot+linux-remoteproc
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