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irqchip/gic-v3: Add Rockchip 3588001 erratum workaround

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Rockchip RK3588/RK3588s GIC600 integration does not support the
sharability feature. Rockchip assigned Erratum ID #3588001 for this
issue.

Note, that the 0x0201743b ID is not Rockchip specific and thus
there is an extra of_machine_is_compatible() check.

The flags are named FORCE_NON_SHAREABLE to be vendor agnostic,
since apparently similar integration design errors exist in other
platforms and they can reuse the same flag.

Co-developed-by: XiaoDong Huang <derrick.huang@rock-chips.com>
Signed-off-by: XiaoDong Huang <derrick.huang@rock-chips.com>
Co-developed-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Co-developed-by: Lucas Tanure <lucas.tanure@collabora.com>
Signed-off-by: Lucas Tanure <lucas.tanure@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230418142109.49762-2-sebastian.reichel@collabora.com
This commit is contained in:
Sebastian Reichel 2023-04-18 16:21:08 +02:00 committed by Marc Zyngier
parent 35727af2b1
commit a8707f5538
3 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/arm64/silicon-errata.rst
View File

@ -207,6 +207,9 @@ stable kernels.
+----------------+-----------------+-----------------+-----------------------------+
| Qualcomm Tech. | Kryo4xx Gold | N/A | ARM64_ERRATUM_1286807 |
+----------------+-----------------+-----------------+-----------------------------+
+----------------+-----------------+-----------------+-----------------------------+
| Rockchip | RK3588 | #3588001 | ROCKCHIP_ERRATUM_3588001 |
+----------------+-----------------+-----------------+-----------------------------+
+----------------+-----------------+-----------------+-----------------------------+
| Fujitsu | A64FX | E#010001 | FUJITSU_ERRATUM_010001 |

10
arch/arm64/Kconfig
View File

@ -1150,6 +1150,16 @@ config NVIDIA_CARMEL_CNP_ERRATUM
If unsure, say Y.
config ROCKCHIP_ERRATUM_3588001
bool "Rockchip 3588001: GIC600 can not support shareability attributes"
default y
help
The Rockchip RK3588 GIC600 SoC integration does not support ACE/ACE-lite.
This means, that its sharability feature may not be used, even though it
is supported by the IP itself.
If unsure, say Y.
config SOCIONEXT_SYNQUACER_PREITS
bool "Socionext Synquacer: Workaround for GICv3 pre-ITS"
default y

35
drivers/irqchip/irq-gic-v3-its.c
View File

@ -42,9 +42,11 @@
#define ITS_FLAGS_CMDQ_NEEDS_FLUSHING (1ULL << 0)
#define ITS_FLAGS_WORKAROUND_CAVIUM_22375 (1ULL << 1)
#define ITS_FLAGS_WORKAROUND_CAVIUM_23144 (1ULL << 2)
#define ITS_FLAGS_FORCE_NON_SHAREABLE (1ULL << 3)
#define RDIST_FLAGS_PROPBASE_NEEDS_FLUSHING (1 << 0)
#define RDIST_FLAGS_RD_TABLES_PREALLOCATED (1 << 1)
#define RDIST_FLAGS_FORCE_NON_SHAREABLE (1 << 2)
#define RD_LOCAL_LPI_ENABLED BIT(0)
#define RD_LOCAL_PENDTABLE_PREALLOCATED BIT(1)
@ -2359,6 +2361,9 @@ retry_baser:
its_write_baser(its, baser, val);
tmp = baser->val;
if (its->flags & ITS_FLAGS_FORCE_NON_SHAREABLE)
tmp &= ~GITS_BASER_SHAREABILITY_MASK;
if ((val ^ tmp) & GITS_BASER_SHAREABILITY_MASK) {
/*
* Shareability didn't stick. Just use
@ -3096,6 +3101,9 @@ static void its_cpu_init_lpis(void)
gicr_write_propbaser(val, rbase + GICR_PROPBASER);
tmp = gicr_read_propbaser(rbase + GICR_PROPBASER);
if (gic_rdists->flags & RDIST_FLAGS_FORCE_NON_SHAREABLE)
tmp &= ~GICR_PROPBASER_SHAREABILITY_MASK;
if ((tmp ^ val) & GICR_PROPBASER_SHAREABILITY_MASK) {
if (!(tmp & GICR_PROPBASER_SHAREABILITY_MASK)) {
/*
@ -3120,6 +3128,9 @@ static void its_cpu_init_lpis(void)
gicr_write_pendbaser(val, rbase + GICR_PENDBASER);
tmp = gicr_read_pendbaser(rbase + GICR_PENDBASER);
if (gic_rdists->flags & RDIST_FLAGS_FORCE_NON_SHAREABLE)
tmp &= ~GICR_PENDBASER_SHAREABILITY_MASK;
if (!(tmp & GICR_PENDBASER_SHAREABILITY_MASK)) {
/*
* The HW reports non-shareable, we must remove the
@ -4710,6 +4721,19 @@ static bool __maybe_unused its_enable_quirk_hip07_161600802(void *data)
return true;
}
static bool __maybe_unused its_enable_rk3588001(void *data)
{
struct its_node *its = data;
if (!of_machine_is_compatible("rockchip,rk3588"))
return false;
its->flags |= ITS_FLAGS_FORCE_NON_SHAREABLE;
gic_rdists->flags |= RDIST_FLAGS_FORCE_NON_SHAREABLE;
return true;
}
static const struct gic_quirk its_quirks[] = {
#ifdef CONFIG_CAVIUM_ERRATUM_22375
{
@ -4755,6 +4779,14 @@ static const struct gic_quirk its_quirks[] = {
.mask = 0xffffffff,
.init = its_enable_quirk_hip07_161600802,
},
#endif
#ifdef CONFIG_ROCKCHIP_ERRATUM_3588001
{
.desc = "ITS: Rockchip erratum RK3588001",
.iidr = 0x0201743b,
.mask = 0xffffffff,
.init = its_enable_rk3588001,
},
#endif
{
}
@ -5096,6 +5128,9 @@ static int __init its_probe_one(struct resource *res,
gits_write_cbaser(baser, its->base + GITS_CBASER);
tmp = gits_read_cbaser(its->base + GITS_CBASER);
if (its->flags & ITS_FLAGS_FORCE_NON_SHAREABLE)
tmp &= ~GITS_CBASER_SHAREABILITY_MASK;
if ((tmp ^ baser) & GITS_CBASER_SHAREABILITY_MASK) {
if (!(tmp & GITS_CBASER_SHAREABILITY_MASK)) {
/*