* [PATCH 1/3] checks: Add an interrupt-map check
@ 2021-09-28 21:23 Rob Herring
[not found] ` <20210928212335.2061125-1-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
0 siblings, 1 reply; 8+ messages in thread
From: Rob Herring @ 2021-09-28 21:23 UTC (permalink / raw)
To: devicetree-compiler-u79uwXL29TY76Z2rM5mHXA; +Cc: Andre Przywara
Add a check for parsing 'interrupt-map' properties. The check primarily
tests parsing 'interrupt-map' properties which depends on and the parent
interrupt controller (or another map) node.
Note that this does not require '#address-cells' in the interrupt-map
parent, but treats missing '#address-cells' as 0 which is how the Linux
kernel parses it. There's numerous cases that expect this behavior.
Cc: Andre Przywara <andre.przywara-5wv7dgnIgG8@public.gmane.org>
Signed-off-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
checks.c | 88 ++++++++++++++++++++++++++++++
tests/bad-interrupt-map-mask.dts | 20 +++++++
tests/bad-interrupt-map-parent.dts | 17 ++++++
tests/bad-interrupt-map.dts | 19 +++++++
tests/run_tests.sh | 3 +
5 files changed, 147 insertions(+)
create mode 100644 tests/bad-interrupt-map-mask.dts
create mode 100644 tests/bad-interrupt-map-parent.dts
create mode 100644 tests/bad-interrupt-map.dts
diff --git a/checks.c b/checks.c
index fb3fc9cda4b1..d4e7facd7f37 100644
--- a/checks.c
+++ b/checks.c
@@ -1589,6 +1589,93 @@ static void check_interrupt_provider(struct check *c,
}
WARNING(interrupt_provider, check_interrupt_provider, NULL);
+static void check_interrupt_map(struct check *c,
+ struct dt_info *dti,
+ struct node *node)
+{
+ struct node *root = dti->dt;
+ struct property *prop, *irq_map_prop;
+ size_t cellsize, cell, map_cells;
+
+ irq_map_prop = get_property(node, "interrupt-map");
+ if (!irq_map_prop)
+ return;
+
+ prop = get_property(node, "#interrupt-cells");
+ if (!prop)
+ /* Already checked in check_interrupt_provider */
+ return;
+ cellsize = propval_cell(prop);
+
+ prop = get_property(node, "#address-cells");
+ if (!prop) {
+ FAIL(c, dti, node,
+ "Missing '#address-cells' in interrupt-map provider");
+ return;
+ }
+ cellsize += propval_cell(prop);
+
+ prop = get_property(node, "interrupt-map-mask");
+ if (prop && (prop->val.len != (cellsize * sizeof(cell_t))))
+ FAIL_PROP(c, dti, node, prop,
+ "property size (%d) is invalid, expected %zu",
+ prop->val.len, cellsize * sizeof(cell_t));
+
+ if (!is_multiple_of(irq_map_prop->val.len, sizeof(cell_t))) {
+ FAIL_PROP(c, dti, node, irq_map_prop,
+ "property size (%d) is invalid, expected multiple of %zu",
+ irq_map_prop->val.len, sizeof(cell_t));
+ return;
+ }
+
+ map_cells = irq_map_prop->val.len / sizeof(cell_t);
+ for (cell = 0; cell < map_cells; ) {
+ struct node *provider_node;
+ struct property *cellprop;
+ int phandle;
+ size_t parent_cellsize;
+
+ if ((cell + cellsize) >= map_cells) {
+ FAIL_PROP(c, dti, node, irq_map_prop,
+ "property size (%d) too small, expected > %zu",
+ irq_map_prop->val.len, (cell + cellsize) * sizeof(cell_t));
+ break;
+ }
+
+ phandle = propval_cell_n(irq_map_prop, cell + cellsize);
+
+ if ((phandle == 0) || (phandle == -1)) {
+ FAIL_PROP(c, dti, node, irq_map_prop,
+ "Cell %zu is not a phandle(%d)",
+ cell + cellsize, phandle);
+ break;
+ }
+ provider_node = get_node_by_phandle(root, phandle);
+ if (!provider_node) {
+ FAIL_PROP(c, dti, node, irq_map_prop,
+ "Could not get phandle node for (cell %zu)",
+ cell);
+ break;
+ }
+
+ cellprop = get_property(provider_node, "#interrupt-cells");
+ if (cellprop) {
+ parent_cellsize = propval_cell(cellprop);
+ } else {
+ FAIL(c, dti, node, "Missing property '#interrupt-cells' in node %s or bad phandle (referred from interrupt-map[%zu])",
+ provider_node->fullpath, cell);
+ break;
+ }
+
+ cellprop = get_property(provider_node, "#address-cells");
+ if (cellprop)
+ parent_cellsize += propval_cell(cellprop);
+
+ cell += cellsize + 1 + parent_cellsize;
+ }
+}
+WARNING(interrupt_map, check_interrupt_map, NULL, &phandle_references);
+
static void check_interrupts_property(struct check *c,
struct dt_info *dti,
struct node *node)
@@ -1887,6 +1974,7 @@ static struct check *check_table[] = {
&gpios_property,
&interrupts_property,
&interrupt_provider,
+ &interrupt_map,
&alias_paths,
diff --git a/tests/bad-interrupt-map-mask.dts b/tests/bad-interrupt-map-mask.dts
new file mode 100644
index 000000000000..10eaffd62310
--- /dev/null
+++ b/tests/bad-interrupt-map-mask.dts
@@ -0,0 +1,20 @@
+/dts-v1/;
+
+/ {
+ interrupt-parent = <&intc>;
+ intc: interrupt-controller {
+ #interrupt-cells = <3>;
+ interrupt-controller;
+ };
+
+ node {
+ #address-cells = <0>;
+ #interrupt-cells = <1>;
+ interrupt-map = <1 &intc 1 2 3>;
+ interrupt-map-mask = <0 0>;
+
+ child {
+ interrupts = <1>;
+ };
+ };
+};
diff --git a/tests/bad-interrupt-map-parent.dts b/tests/bad-interrupt-map-parent.dts
new file mode 100644
index 000000000000..fe88ce2fe76f
--- /dev/null
+++ b/tests/bad-interrupt-map-parent.dts
@@ -0,0 +1,17 @@
+/dts-v1/;
+
+/ {
+ interrupt-parent = <&intc>;
+ intc: interrupt-controller {
+ };
+
+ node {
+ #address-cells = <0>;
+ #interrupt-cells = <1>;
+ interrupt-map = <1 &intc 1 2 3>;
+
+ child {
+ interrupts = <1>;
+ };
+ };
+};
diff --git a/tests/bad-interrupt-map.dts b/tests/bad-interrupt-map.dts
new file mode 100644
index 000000000000..6df8f93ae00c
--- /dev/null
+++ b/tests/bad-interrupt-map.dts
@@ -0,0 +1,19 @@
+/dts-v1/;
+
+/ {
+ interrupt-parent = <&intc>;
+ intc: interrupt-controller {
+ #interrupt-cells = <3>;
+ interrupt-controller;
+ };
+
+ node {
+ /* Missing #address-cells = <0>; */
+ #interrupt-cells = <1>;
+ interrupt-map = <1 &intc 1 2 3>;
+
+ child {
+ interrupts = <1>;
+ };
+ };
+};
diff --git a/tests/run_tests.sh b/tests/run_tests.sh
index 0e270feb3e47..d100d5aaa21f 100755
--- a/tests/run_tests.sh
+++ b/tests/run_tests.sh
@@ -717,6 +717,9 @@ dtc_tests () {
run_sh_test "$SRCDIR/dtc-checkfails.sh" -n deprecated_gpio_property -- -Wdeprecated_gpio_property -I dts -O dtb "$SRCDIR/good-gpio.dts"
check_tests "$SRCDIR/bad-interrupt-cells.dts" interrupts_property
check_tests "$SRCDIR/bad-interrupt-controller.dts" interrupt_provider
+ check_tests "$SRCDIR/bad-interrupt-map.dts" interrupt_map
+ check_tests "$SRCDIR/bad-interrupt-map-parent.dts" interrupt_map
+ check_tests "$SRCDIR/bad-interrupt-map-mask.dts" interrupt_map
run_sh_test "$SRCDIR/dtc-checkfails.sh" node_name_chars -- -I dtb -O dtb bad_node_char.dtb
run_sh_test "$SRCDIR/dtc-checkfails.sh" node_name_format -- -I dtb -O dtb bad_node_format.dtb
run_sh_test "$SRCDIR/dtc-checkfails.sh" property_name_chars -- -I dtb -O dtb bad_prop_char.dtb
--
2.30.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH 2/3] checks: Drop interrupt provider '#address-cells' check
[not found] ` <20210928212335.2061125-1-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
@ 2021-09-28 21:23 ` Rob Herring
[not found] ` <20210928212335.2061125-2-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2021-09-28 21:23 ` [PATCH 3/3] checks: Ensure '#interrupt-cells' only exists in interrupt providers Rob Herring
2021-10-11 4:56 ` [PATCH 1/3] checks: Add an interrupt-map check David Gibson
2 siblings, 1 reply; 8+ messages in thread
From: Rob Herring @ 2021-09-28 21:23 UTC (permalink / raw)
To: devicetree-compiler-u79uwXL29TY76Z2rM5mHXA; +Cc: Andre Przywara
'#address-cells' is only needed when parsing 'interrupt-map' properties, so
remove it from the common interrupt-provider test.
Cc: Andre Przywara <andre.przywara-5wv7dgnIgG8@public.gmane.org>
Signed-off-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
checks.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/checks.c b/checks.c
index d4e7facd7f37..2efa36377e80 100644
--- a/checks.c
+++ b/checks.c
@@ -1581,11 +1581,6 @@ static void check_interrupt_provider(struct check *c,
if (!prop)
FAIL(c, dti, node,
"Missing #interrupt-cells in interrupt provider");
-
- prop = get_property(node, "#address-cells");
- if (!prop)
- FAIL(c, dti, node,
- "Missing #address-cells in interrupt provider");
}
WARNING(interrupt_provider, check_interrupt_provider, NULL);
--
2.30.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH 3/3] checks: Ensure '#interrupt-cells' only exists in interrupt providers
[not found] ` <20210928212335.2061125-1-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2021-09-28 21:23 ` [PATCH 2/3] checks: Drop interrupt provider '#address-cells' check Rob Herring
@ 2021-09-28 21:23 ` Rob Herring
[not found] ` <20210928212335.2061125-3-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2021-10-11 4:56 ` [PATCH 1/3] checks: Add an interrupt-map check David Gibson
2 siblings, 1 reply; 8+ messages in thread
From: Rob Herring @ 2021-09-28 21:23 UTC (permalink / raw)
To: devicetree-compiler-u79uwXL29TY76Z2rM5mHXA; +Cc: Andre Przywara
The interrupt provider check currently checks if an interrupt provider
has #interrupt-cells, but not whether #interrupt-cells is present
outside of interrupt-providers. Rework the check to cover the latter
case.
Cc: Andre Przywara <andre.przywara-5wv7dgnIgG8@public.gmane.org>
Signed-off-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
checks.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/checks.c b/checks.c
index 2efa36377e80..7f769e92ef71 100644
--- a/checks.c
+++ b/checks.c
@@ -1573,14 +1573,20 @@ static void check_interrupt_provider(struct check *c,
struct node *node)
{
struct property *prop;
+ bool irq_provider = node_is_interrupt_provider(node);
- if (!node_is_interrupt_provider(node))
+ prop = get_property(node, "#interrupt-cells");
+ if (irq_provider && !prop) {
+ FAIL(c, dti, node,
+ "Missing '#interrupt-cells' in interrupt-controller");
return;
+ }
- prop = get_property(node, "#interrupt-cells");
- if (!prop)
+ if (!irq_provider && prop) {
FAIL(c, dti, node,
- "Missing #interrupt-cells in interrupt provider");
+ "'#interrupt-cells' found, but node is not an interrupt provider");
+ return;
+ }
}
WARNING(interrupt_provider, check_interrupt_provider, NULL);
--
2.30.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH 1/3] checks: Add an interrupt-map check
[not found] ` <20210928212335.2061125-1-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2021-09-28 21:23 ` [PATCH 2/3] checks: Drop interrupt provider '#address-cells' check Rob Herring
2021-09-28 21:23 ` [PATCH 3/3] checks: Ensure '#interrupt-cells' only exists in interrupt providers Rob Herring
@ 2021-10-11 4:56 ` David Gibson
2021-10-11 16:56 ` Rob Herring
2 siblings, 1 reply; 8+ messages in thread
From: David Gibson @ 2021-10-11 4:56 UTC (permalink / raw)
To: Rob Herring; +Cc: devicetree-compiler-u79uwXL29TY76Z2rM5mHXA, Andre Przywara
[-- Attachment #1: Type: text/plain, Size: 7869 bytes --]
On Tue, Sep 28, 2021 at 04:23:33PM -0500, Rob Herring wrote:
> Add a check for parsing 'interrupt-map' properties. The check primarily
> tests parsing 'interrupt-map' properties which depends on and the parent
> interrupt controller (or another map) node.
>
> Note that this does not require '#address-cells' in the interrupt-map
> parent, but treats missing '#address-cells' as 0 which is how the Linux
> kernel parses it. There's numerous cases that expect this behavior.
>
> Cc: Andre Przywara <andre.przywara-5wv7dgnIgG8@public.gmane.org>
> Signed-off-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> ---
> checks.c | 88 ++++++++++++++++++++++++++++++
> tests/bad-interrupt-map-mask.dts | 20 +++++++
> tests/bad-interrupt-map-parent.dts | 17 ++++++
> tests/bad-interrupt-map.dts | 19 +++++++
> tests/run_tests.sh | 3 +
> 5 files changed, 147 insertions(+)
> create mode 100644 tests/bad-interrupt-map-mask.dts
> create mode 100644 tests/bad-interrupt-map-parent.dts
> create mode 100644 tests/bad-interrupt-map.dts
>
> diff --git a/checks.c b/checks.c
> index fb3fc9cda4b1..d4e7facd7f37 100644
> --- a/checks.c
> +++ b/checks.c
> @@ -1589,6 +1589,93 @@ static void check_interrupt_provider(struct check *c,
> }
> WARNING(interrupt_provider, check_interrupt_provider, NULL);
>
> +static void check_interrupt_map(struct check *c,
> + struct dt_info *dti,
> + struct node *node)
> +{
> + struct node *root = dti->dt;
> + struct property *prop, *irq_map_prop;
> + size_t cellsize, cell, map_cells;
> +
> + irq_map_prop = get_property(node, "interrupt-map");
> + if (!irq_map_prop)
> + return;
> +
> + prop = get_property(node, "#interrupt-cells");
> + if (!prop)
> + /* Already checked in check_interrupt_provider */
If you add check_interrupt_provider as a dependency, then you can omit
this check. Of course, check_interrupt_provider itself should
probably have a dependency on the check that ensures than
len(#interrupt-cells) == 4.
> + return;
> + cellsize = propval_cell(prop);
> +
> + prop = get_property(node, "#address-cells");
> + if (!prop) {
> + FAIL(c, dti, node,
> + "Missing '#address-cells' in interrupt-map provider");
> + return;
> + }
> + cellsize += propval_cell(prop);
> +
> + prop = get_property(node, "interrupt-map-mask");
> + if (prop && (prop->val.len != (cellsize * sizeof(cell_t))))
> + FAIL_PROP(c, dti, node, prop,
> + "property size (%d) is invalid, expected %zu",
> + prop->val.len, cellsize * sizeof(cell_t));
> +
> + if (!is_multiple_of(irq_map_prop->val.len, sizeof(cell_t))) {
> + FAIL_PROP(c, dti, node, irq_map_prop,
> + "property size (%d) is invalid, expected multiple of %zu",
> + irq_map_prop->val.len, sizeof(cell_t));
> + return;
> + }
> +
> + map_cells = irq_map_prop->val.len / sizeof(cell_t);
> + for (cell = 0; cell < map_cells; ) {
> + struct node *provider_node;
> + struct property *cellprop;
> + int phandle;
> + size_t parent_cellsize;
> +
> + if ((cell + cellsize) >= map_cells) {
> + FAIL_PROP(c, dti, node, irq_map_prop,
> + "property size (%d) too small, expected > %zu",
> + irq_map_prop->val.len, (cell + cellsize) * sizeof(cell_t));
> + break;
> + }
> +
> + phandle = propval_cell_n(irq_map_prop, cell + cellsize);
> +
> + if ((phandle == 0) || (phandle == -1)) {
> + FAIL_PROP(c, dti, node, irq_map_prop,
> + "Cell %zu is not a phandle(%d)",
> + cell + cellsize, phandle);
> + break;
> + }
> + provider_node = get_node_by_phandle(root, phandle);
> + if (!provider_node) {
> + FAIL_PROP(c, dti, node, irq_map_prop,
> + "Could not get phandle node for (cell %zu)",
> + cell);
> + break;
> + }
> +
> + cellprop = get_property(provider_node, "#interrupt-cells");
> + if (cellprop) {
> + parent_cellsize = propval_cell(cellprop);
> + } else {
> + FAIL(c, dti, node, "Missing property '#interrupt-cells' in node %s or bad phandle (referred from interrupt-map[%zu])",
> + provider_node->fullpath, cell);
> + break;
> + }
> +
> + cellprop = get_property(provider_node, "#address-cells");
> + if (cellprop)
> + parent_cellsize += propval_cell(cellprop);
> +
> + cell += cellsize + 1 + parent_cellsize;
> + }
> +}
> +WARNING(interrupt_map, check_interrupt_map, NULL, &phandle_references);
> +
> static void check_interrupts_property(struct check *c,
> struct dt_info *dti,
> struct node *node)
> @@ -1887,6 +1974,7 @@ static struct check *check_table[] = {
> &gpios_property,
> &interrupts_property,
> &interrupt_provider,
> + &interrupt_map,
>
> &alias_paths,
>
> diff --git a/tests/bad-interrupt-map-mask.dts b/tests/bad-interrupt-map-mask.dts
> new file mode 100644
> index 000000000000..10eaffd62310
> --- /dev/null
> +++ b/tests/bad-interrupt-map-mask.dts
> @@ -0,0 +1,20 @@
> +/dts-v1/;
> +
> +/ {
> + interrupt-parent = <&intc>;
> + intc: interrupt-controller {
> + #interrupt-cells = <3>;
> + interrupt-controller;
> + };
> +
> + node {
> + #address-cells = <0>;
> + #interrupt-cells = <1>;
> + interrupt-map = <1 &intc 1 2 3>;
> + interrupt-map-mask = <0 0>;
> +
> + child {
> + interrupts = <1>;
> + };
> + };
> +};
> diff --git a/tests/bad-interrupt-map-parent.dts b/tests/bad-interrupt-map-parent.dts
> new file mode 100644
> index 000000000000..fe88ce2fe76f
> --- /dev/null
> +++ b/tests/bad-interrupt-map-parent.dts
> @@ -0,0 +1,17 @@
> +/dts-v1/;
> +
> +/ {
> + interrupt-parent = <&intc>;
> + intc: interrupt-controller {
> + };
> +
> + node {
> + #address-cells = <0>;
> + #interrupt-cells = <1>;
> + interrupt-map = <1 &intc 1 2 3>;
If you just want to verify the check on the bad parent, shouldn't you
have an interrupt-map-mask here?
> +
> + child {
> + interrupts = <1>;
> + };
> + };
> +};
> diff --git a/tests/bad-interrupt-map.dts b/tests/bad-interrupt-map.dts
> new file mode 100644
> index 000000000000..6df8f93ae00c
> --- /dev/null
> +++ b/tests/bad-interrupt-map.dts
> @@ -0,0 +1,19 @@
> +/dts-v1/;
> +
> +/ {
> + interrupt-parent = <&intc>;
> + intc: interrupt-controller {
> + #interrupt-cells = <3>;
> + interrupt-controller;
> + };
> +
> + node {
> + /* Missing #address-cells = <0>; */
> + #interrupt-cells = <1>;
> + interrupt-map = <1 &intc 1 2 3>;
Likewise here, since missing interrupt-map-mask doesn't seem to be the
fault you're checking for.
> +
> + child {
> + interrupts = <1>;
> + };
> + };
> +};
> diff --git a/tests/run_tests.sh b/tests/run_tests.sh
> index 0e270feb3e47..d100d5aaa21f 100755
> --- a/tests/run_tests.sh
> +++ b/tests/run_tests.sh
> @@ -717,6 +717,9 @@ dtc_tests () {
> run_sh_test "$SRCDIR/dtc-checkfails.sh" -n deprecated_gpio_property -- -Wdeprecated_gpio_property -I dts -O dtb "$SRCDIR/good-gpio.dts"
> check_tests "$SRCDIR/bad-interrupt-cells.dts" interrupts_property
> check_tests "$SRCDIR/bad-interrupt-controller.dts" interrupt_provider
> + check_tests "$SRCDIR/bad-interrupt-map.dts" interrupt_map
> + check_tests "$SRCDIR/bad-interrupt-map-parent.dts" interrupt_map
> + check_tests "$SRCDIR/bad-interrupt-map-mask.dts" interrupt_map
> run_sh_test "$SRCDIR/dtc-checkfails.sh" node_name_chars -- -I dtb -O dtb bad_node_char.dtb
> run_sh_test "$SRCDIR/dtc-checkfails.sh" node_name_format -- -I dtb -O dtb bad_node_format.dtb
> run_sh_test "$SRCDIR/dtc-checkfails.sh" property_name_chars -- -I dtb -O dtb bad_prop_char.dtb
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH 2/3] checks: Drop interrupt provider '#address-cells' check
[not found] ` <20210928212335.2061125-2-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
@ 2021-10-11 4:57 ` David Gibson
0 siblings, 0 replies; 8+ messages in thread
From: David Gibson @ 2021-10-11 4:57 UTC (permalink / raw)
To: Rob Herring; +Cc: devicetree-compiler-u79uwXL29TY76Z2rM5mHXA, Andre Przywara
[-- Attachment #1: Type: text/plain, Size: 1270 bytes --]
On Tue, Sep 28, 2021 at 04:23:34PM -0500, Rob Herring wrote:
> '#address-cells' is only needed when parsing 'interrupt-map' properties, so
> remove it from the common interrupt-provider test.
>
> Cc: Andre Przywara <andre.przywara-5wv7dgnIgG8@public.gmane.org>
> Signed-off-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Reviewed-by: David Gibson <david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>
(in the context of the previous patch)
> ---
> checks.c | 5 -----
> 1 file changed, 5 deletions(-)
>
> diff --git a/checks.c b/checks.c
> index d4e7facd7f37..2efa36377e80 100644
> --- a/checks.c
> +++ b/checks.c
> @@ -1581,11 +1581,6 @@ static void check_interrupt_provider(struct check *c,
> if (!prop)
> FAIL(c, dti, node,
> "Missing #interrupt-cells in interrupt provider");
> -
> - prop = get_property(node, "#address-cells");
> - if (!prop)
> - FAIL(c, dti, node,
> - "Missing #address-cells in interrupt provider");
> }
> WARNING(interrupt_provider, check_interrupt_provider, NULL);
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH 3/3] checks: Ensure '#interrupt-cells' only exists in interrupt providers
[not found] ` <20210928212335.2061125-3-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
@ 2021-10-11 4:58 ` David Gibson
0 siblings, 0 replies; 8+ messages in thread
From: David Gibson @ 2021-10-11 4:58 UTC (permalink / raw)
To: Rob Herring; +Cc: devicetree-compiler-u79uwXL29TY76Z2rM5mHXA, Andre Przywara
[-- Attachment #1: Type: text/plain, Size: 1757 bytes --]
On Tue, Sep 28, 2021 at 04:23:35PM -0500, Rob Herring wrote:
> The interrupt provider check currently checks if an interrupt provider
> has #interrupt-cells, but not whether #interrupt-cells is present
> outside of interrupt-providers. Rework the check to cover the latter
> case.
>
> Cc: Andre Przywara <andre.przywara-5wv7dgnIgG8@public.gmane.org>
> Signed-off-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Reviewed-by: David Gibson <david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>
> ---
> checks.c | 14 ++++++++++----
> 1 file changed, 10 insertions(+), 4 deletions(-)
>
> diff --git a/checks.c b/checks.c
> index 2efa36377e80..7f769e92ef71 100644
> --- a/checks.c
> +++ b/checks.c
> @@ -1573,14 +1573,20 @@ static void check_interrupt_provider(struct check *c,
> struct node *node)
> {
> struct property *prop;
> + bool irq_provider = node_is_interrupt_provider(node);
>
> - if (!node_is_interrupt_provider(node))
> + prop = get_property(node, "#interrupt-cells");
> + if (irq_provider && !prop) {
> + FAIL(c, dti, node,
> + "Missing '#interrupt-cells' in interrupt-controller");
> return;
> + }
>
> - prop = get_property(node, "#interrupt-cells");
> - if (!prop)
> + if (!irq_provider && prop) {
> FAIL(c, dti, node,
> - "Missing #interrupt-cells in interrupt provider");
> + "'#interrupt-cells' found, but node is not an interrupt provider");
> + return;
> + }
> }
> WARNING(interrupt_provider, check_interrupt_provider, NULL);
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH 1/3] checks: Add an interrupt-map check
2021-10-11 4:56 ` [PATCH 1/3] checks: Add an interrupt-map check David Gibson
@ 2021-10-11 16:56 ` Rob Herring
[not found] ` <CAL_JsqKrRAOiuY=71xsZ0RRojsOraXmSaLpDYSXx1E84SF_qDQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
0 siblings, 1 reply; 8+ messages in thread
From: Rob Herring @ 2021-10-11 16:56 UTC (permalink / raw)
To: David Gibson; +Cc: Devicetree Compiler, Andre Przywara
On Sun, Oct 10, 2021 at 11:58 PM David Gibson
<david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org> wrote:
>
> On Tue, Sep 28, 2021 at 04:23:33PM -0500, Rob Herring wrote:
> > Add a check for parsing 'interrupt-map' properties. The check primarily
> > tests parsing 'interrupt-map' properties which depends on and the parent
> > interrupt controller (or another map) node.
> >
> > Note that this does not require '#address-cells' in the interrupt-map
> > parent, but treats missing '#address-cells' as 0 which is how the Linux
> > kernel parses it. There's numerous cases that expect this behavior.
> >
> > Cc: Andre Przywara <andre.przywara-5wv7dgnIgG8@public.gmane.org>
> > Signed-off-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> > ---
> > checks.c | 88 ++++++++++++++++++++++++++++++
> > tests/bad-interrupt-map-mask.dts | 20 +++++++
> > tests/bad-interrupt-map-parent.dts | 17 ++++++
> > tests/bad-interrupt-map.dts | 19 +++++++
> > tests/run_tests.sh | 3 +
> > 5 files changed, 147 insertions(+)
> > create mode 100644 tests/bad-interrupt-map-mask.dts
> > create mode 100644 tests/bad-interrupt-map-parent.dts
> > create mode 100644 tests/bad-interrupt-map.dts
> >
> > diff --git a/checks.c b/checks.c
> > index fb3fc9cda4b1..d4e7facd7f37 100644
> > --- a/checks.c
> > +++ b/checks.c
> > @@ -1589,6 +1589,93 @@ static void check_interrupt_provider(struct check *c,
> > }
> > WARNING(interrupt_provider, check_interrupt_provider, NULL);
> >
> > +static void check_interrupt_map(struct check *c,
> > + struct dt_info *dti,
> > + struct node *node)
> > +{
> > + struct node *root = dti->dt;
> > + struct property *prop, *irq_map_prop;
> > + size_t cellsize, cell, map_cells;
> > +
> > + irq_map_prop = get_property(node, "interrupt-map");
> > + if (!irq_map_prop)
> > + return;
> > +
> > + prop = get_property(node, "#interrupt-cells");
> > + if (!prop)
> > + /* Already checked in check_interrupt_provider */
>
> If you add check_interrupt_provider as a dependency, then you can omit
> this check. Of course, check_interrupt_provider itself should
> probably have a dependency on the check that ensures than
> len(#interrupt-cells) == 4.
Okay.
> > + return;
> > + cellsize = propval_cell(prop);
> > +
> > + prop = get_property(node, "#address-cells");
> > + if (!prop) {
> > + FAIL(c, dti, node,
> > + "Missing '#address-cells' in interrupt-map provider");
> > + return;
> > + }
> > + cellsize += propval_cell(prop);
> > +
> > + prop = get_property(node, "interrupt-map-mask");
> > + if (prop && (prop->val.len != (cellsize * sizeof(cell_t))))
> > + FAIL_PROP(c, dti, node, prop,
> > + "property size (%d) is invalid, expected %zu",
> > + prop->val.len, cellsize * sizeof(cell_t));
> > +
> > + if (!is_multiple_of(irq_map_prop->val.len, sizeof(cell_t))) {
> > + FAIL_PROP(c, dti, node, irq_map_prop,
> > + "property size (%d) is invalid, expected multiple of %zu",
> > + irq_map_prop->val.len, sizeof(cell_t));
> > + return;
> > + }
> > +
> > + map_cells = irq_map_prop->val.len / sizeof(cell_t);
> > + for (cell = 0; cell < map_cells; ) {
> > + struct node *provider_node;
> > + struct property *cellprop;
> > + int phandle;
> > + size_t parent_cellsize;
> > +
> > + if ((cell + cellsize) >= map_cells) {
> > + FAIL_PROP(c, dti, node, irq_map_prop,
> > + "property size (%d) too small, expected > %zu",
> > + irq_map_prop->val.len, (cell + cellsize) * sizeof(cell_t));
> > + break;
> > + }
> > +
> > + phandle = propval_cell_n(irq_map_prop, cell + cellsize);
> > +
> > + if ((phandle == 0) || (phandle == -1)) {
> > + FAIL_PROP(c, dti, node, irq_map_prop,
> > + "Cell %zu is not a phandle(%d)",
> > + cell + cellsize, phandle);
> > + break;
> > + }
> > + provider_node = get_node_by_phandle(root, phandle);
> > + if (!provider_node) {
> > + FAIL_PROP(c, dti, node, irq_map_prop,
> > + "Could not get phandle node for (cell %zu)",
> > + cell);
> > + break;
> > + }
> > +
> > + cellprop = get_property(provider_node, "#interrupt-cells");
> > + if (cellprop) {
> > + parent_cellsize = propval_cell(cellprop);
> > + } else {
> > + FAIL(c, dti, node, "Missing property '#interrupt-cells' in node %s or bad phandle (referred from interrupt-map[%zu])",
> > + provider_node->fullpath, cell);
> > + break;
> > + }
> > +
> > + cellprop = get_property(provider_node, "#address-cells");
> > + if (cellprop)
> > + parent_cellsize += propval_cell(cellprop);
> > +
> > + cell += cellsize + 1 + parent_cellsize;
> > + }
> > +}
> > +WARNING(interrupt_map, check_interrupt_map, NULL, &phandle_references);
> > +
> > static void check_interrupts_property(struct check *c,
> > struct dt_info *dti,
> > struct node *node)
> > @@ -1887,6 +1974,7 @@ static struct check *check_table[] = {
> > &gpios_property,
> > &interrupts_property,
> > &interrupt_provider,
> > + &interrupt_map,
> >
> > &alias_paths,
> >
> > diff --git a/tests/bad-interrupt-map-mask.dts b/tests/bad-interrupt-map-mask.dts
> > new file mode 100644
> > index 000000000000..10eaffd62310
> > --- /dev/null
> > +++ b/tests/bad-interrupt-map-mask.dts
> > @@ -0,0 +1,20 @@
> > +/dts-v1/;
> > +
> > +/ {
> > + interrupt-parent = <&intc>;
> > + intc: interrupt-controller {
> > + #interrupt-cells = <3>;
> > + interrupt-controller;
> > + };
> > +
> > + node {
> > + #address-cells = <0>;
> > + #interrupt-cells = <1>;
> > + interrupt-map = <1 &intc 1 2 3>;
> > + interrupt-map-mask = <0 0>;
> > +
> > + child {
> > + interrupts = <1>;
> > + };
> > + };
> > +};
> > diff --git a/tests/bad-interrupt-map-parent.dts b/tests/bad-interrupt-map-parent.dts
> > new file mode 100644
> > index 000000000000..fe88ce2fe76f
> > --- /dev/null
> > +++ b/tests/bad-interrupt-map-parent.dts
> > @@ -0,0 +1,17 @@
> > +/dts-v1/;
> > +
> > +/ {
> > + interrupt-parent = <&intc>;
> > + intc: interrupt-controller {
> > + };
> > +
> > + node {
> > + #address-cells = <0>;
> > + #interrupt-cells = <1>;
> > + interrupt-map = <1 &intc 1 2 3>;
>
> If you just want to verify the check on the bad parent, shouldn't you
> have an interrupt-map-mask here?
No, a missing interrupt-map-mask is not an error. Only the wrong
number of cells is an error. It's treated as all 1s mask if not
present. So, in interest of having a minimal test, I omitted it.
Rob
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH 1/3] checks: Add an interrupt-map check
[not found] ` <CAL_JsqKrRAOiuY=71xsZ0RRojsOraXmSaLpDYSXx1E84SF_qDQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
@ 2021-10-13 3:43 ` David Gibson
0 siblings, 0 replies; 8+ messages in thread
From: David Gibson @ 2021-10-13 3:43 UTC (permalink / raw)
To: Rob Herring; +Cc: Devicetree Compiler, Andre Przywara
[-- Attachment #1: Type: text/plain, Size: 1367 bytes --]
On Mon, Oct 11, 2021 at 11:56:19AM -0500, Rob Herring wrote:
> On Sun, Oct 10, 2021 at 11:58 PM David Gibson
> <david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org> wrote:
> >
> > On Tue, Sep 28, 2021 at 04:23:33PM -0500, Rob Herring wrote:
[snip]
> > > diff --git a/tests/bad-interrupt-map-parent.dts b/tests/bad-interrupt-map-parent.dts
> > > new file mode 100644
> > > index 000000000000..fe88ce2fe76f
> > > --- /dev/null
> > > +++ b/tests/bad-interrupt-map-parent.dts
> > > @@ -0,0 +1,17 @@
> > > +/dts-v1/;
> > > +
> > > +/ {
> > > + interrupt-parent = <&intc>;
> > > + intc: interrupt-controller {
> > > + };
> > > +
> > > + node {
> > > + #address-cells = <0>;
> > > + #interrupt-cells = <1>;
> > > + interrupt-map = <1 &intc 1 2 3>;
> >
> > If you just want to verify the check on the bad parent, shouldn't you
> > have an interrupt-map-mask here?
>
> No, a missing interrupt-map-mask is not an error. Only the wrong
> number of cells is an error. It's treated as all 1s mask if not
> present. So, in interest of having a minimal test, I omitted it.
Ah, sorry, my mistake.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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2021-09-28 21:23 [PATCH 1/3] checks: Add an interrupt-map check Rob Herring
[not found] ` <20210928212335.2061125-1-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2021-09-28 21:23 ` [PATCH 2/3] checks: Drop interrupt provider '#address-cells' check Rob Herring
[not found] ` <20210928212335.2061125-2-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2021-10-11 4:57 ` David Gibson
2021-09-28 21:23 ` [PATCH 3/3] checks: Ensure '#interrupt-cells' only exists in interrupt providers Rob Herring
[not found] ` <20210928212335.2061125-3-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2021-10-11 4:58 ` David Gibson
2021-10-11 4:56 ` [PATCH 1/3] checks: Add an interrupt-map check David Gibson
2021-10-11 16:56 ` Rob Herring
[not found] ` <CAL_JsqKrRAOiuY=71xsZ0RRojsOraXmSaLpDYSXx1E84SF_qDQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2021-10-13 3:43 ` David Gibson
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