summaryrefslogtreecommitdiffstats
path: root/drivers/remoteproc/pru_rproc.c
diff options
context:
space:
mode:
authorMaxime Ripard <maxime@cerno.tech>2021-05-11 13:35:52 +0200
committerMaxime Ripard <maxime@cerno.tech>2021-05-11 13:35:52 +0200
commitc55b44c9386f3ee1b08752638559f19deaf6040d (patch)
treec843a21f45180387fcd9eb2625cc9d1f166a3156 /drivers/remoteproc/pru_rproc.c
parentMAINTAINERS: Update my e-mail (diff)
parentLinux 5.13-rc1 (diff)
downloadlinux-c55b44c9386f3ee1b08752638559f19deaf6040d.tar.xz
linux-c55b44c9386f3ee1b08752638559f19deaf6040d.zip
Merge drm/drm-fixes into drm-misc-fixes
Start this new release drm-misc-fixes branch Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/remoteproc/pru_rproc.c')
-rw-r--r--drivers/remoteproc/pru_rproc.c47
1 files changed, 35 insertions, 12 deletions
diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c
index dcb380e868df..e5778e476245 100644
--- a/drivers/remoteproc/pru_rproc.c
+++ b/drivers/remoteproc/pru_rproc.c
@@ -244,8 +244,8 @@ static int pru_rproc_debug_ss_get(void *data, u64 *val)
return 0;
}
-DEFINE_SIMPLE_ATTRIBUTE(pru_rproc_debug_ss_fops, pru_rproc_debug_ss_get,
- pru_rproc_debug_ss_set, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(pru_rproc_debug_ss_fops, pru_rproc_debug_ss_get,
+ pru_rproc_debug_ss_set, "%llu\n");
/*
* Create PRU-specific debugfs entries
@@ -266,12 +266,17 @@ static void pru_rproc_create_debug_entries(struct rproc *rproc)
static void pru_dispose_irq_mapping(struct pru_rproc *pru)
{
- while (pru->evt_count--) {
+ if (!pru->mapped_irq)
+ return;
+
+ while (pru->evt_count) {
+ pru->evt_count--;
if (pru->mapped_irq[pru->evt_count] > 0)
irq_dispose_mapping(pru->mapped_irq[pru->evt_count]);
}
kfree(pru->mapped_irq);
+ pru->mapped_irq = NULL;
}
/*
@@ -284,7 +289,7 @@ static int pru_handle_intrmap(struct rproc *rproc)
struct pru_rproc *pru = rproc->priv;
struct pru_irq_rsc *rsc = pru->pru_interrupt_map;
struct irq_fwspec fwspec;
- struct device_node *irq_parent;
+ struct device_node *parent, *irq_parent;
int i, ret = 0;
/* not having pru_interrupt_map is not an error */
@@ -307,16 +312,31 @@ static int pru_handle_intrmap(struct rproc *rproc)
pru->evt_count = rsc->num_evts;
pru->mapped_irq = kcalloc(pru->evt_count, sizeof(unsigned int),
GFP_KERNEL);
- if (!pru->mapped_irq)
+ if (!pru->mapped_irq) {
+ pru->evt_count = 0;
return -ENOMEM;
+ }
/*
* parse and fill in system event to interrupt channel and
- * channel-to-host mapping
+ * channel-to-host mapping. The interrupt controller to be used
+ * for these mappings for a given PRU remoteproc is always its
+ * corresponding sibling PRUSS INTC node.
*/
- irq_parent = of_irq_find_parent(pru->dev->of_node);
+ parent = of_get_parent(dev_of_node(pru->dev));
+ if (!parent) {
+ kfree(pru->mapped_irq);
+ pru->mapped_irq = NULL;
+ pru->evt_count = 0;
+ return -ENODEV;
+ }
+
+ irq_parent = of_get_child_by_name(parent, "interrupt-controller");
+ of_node_put(parent);
if (!irq_parent) {
kfree(pru->mapped_irq);
+ pru->mapped_irq = NULL;
+ pru->evt_count = 0;
return -ENODEV;
}
@@ -332,16 +352,20 @@ static int pru_handle_intrmap(struct rproc *rproc)
pru->mapped_irq[i] = irq_create_fwspec_mapping(&fwspec);
if (!pru->mapped_irq[i]) {
- dev_err(dev, "failed to get virq\n");
- ret = pru->mapped_irq[i];
+ dev_err(dev, "failed to get virq for fw mapping %d: event %d chnl %d host %d\n",
+ i, fwspec.param[0], fwspec.param[1],
+ fwspec.param[2]);
+ ret = -EINVAL;
goto map_fail;
}
}
+ of_node_put(irq_parent);
return ret;
map_fail:
pru_dispose_irq_mapping(pru);
+ of_node_put(irq_parent);
return ret;
}
@@ -387,8 +411,7 @@ static int pru_rproc_stop(struct rproc *rproc)
pru_control_write_reg(pru, PRU_CTRL_CTRL, val);
/* dispose irq mapping - new firmware can provide new mapping */
- if (pru->mapped_irq)
- pru_dispose_irq_mapping(pru);
+ pru_dispose_irq_mapping(pru);
return 0;
}
@@ -483,7 +506,7 @@ static void *pru_i_da_to_va(struct pru_rproc *pru, u32 da, size_t len)
* core for any PRU client drivers. The PRU Instruction RAM access is restricted
* only to the PRU loader code.
*/
-static void *pru_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *pru_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct pru_rproc *pru = rproc->priv;