lantiq: add 6.1 tag to upstream patch

[openwrt/openwrt.git] / target / linux / lantiq / patches-5.10 / 0320-MIPS-lantiq-enable-all-hardware-interrupts-on-second.patch

diff --git a/target/linux/lantiq/patches-5.10/0320-MIPS-lantiq-enable-all-hardware-interrupts-on-second.patch b/target/linux/lantiq/patches-5.10/0320-MIPS-lantiq-enable-all-hardware-interrupts-on-second.patch
deleted file mode 100644 (file)
index 0ac9adf..0000000
--- a/target/linux/lantiq/patches-5.10/0320-MIPS-lantiq-enable-all-hardware-interrupts-on-second.patch
+++ /dev/null
@@ -1,86 +0,0 @@
-From 2025bc9c3a949b65bfd0601f727678b37962c6c5 Mon Sep 17 00:00:00 2001
-From: Aleksander Jan Bajkowski <olek2@wp.pl>
-Date: Fri, 4 Jun 2021 18:27:58 +0200
-Subject: [PATCH] MIPS: lantiq: enable all hardware interrupts on second VPE
-
-This patch is needed to handle interrupts by the second VPE on the Lantiq
-ARX100, xRX200, xRX300 and xRX330 SoCs. Switching some ICU interrupts to
-the second VPE results in a hang. Currently, the vsmp_init_secondary()
-function is responsible for enabling these interrupts. It only enables
-Malta-specific interrupts (SW0, SW1, HW4 and HW5).
-
-The MIPS core has 8 interrupts defined. On Lantiq SoCs, hardware
-interrupts are wired to an ICU instance. Each VPE has an independent
-instance of the ICU. The mapping of the ICU interrupts is shown below:
-SW0(IP0) - IPI call,
-SW1(IP1) - IPI resched,
-HW0(IP2) - ICU 0-31,
-HW1(IP3) - ICU 32-63,
-HW2(IP4) - ICU 64-95,
-HW3(IP5) - ICU 96-127,
-HW4(IP6) - ICU 128-159,
-HW5(IP7) - timer.
-
-This patch enables all interrupt lines on the second VPE.
-
-This problem affects multithreaded SoCs with a custom interrupt controller.
-SOCs with 1004Kc core and newer use the MIPS GIC. At this point, I am aware
-that the Realtek RTL839x and RTL930x SoCs may need a similar fix. In the
-future, this may be replaced with some generic solution.
-
-Tested on Lantiq xRX200.
-
-Suggested-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
-Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
----
- arch/mips/lantiq/prom.c | 26 ++++++++++++++++++++++++--
- 1 file changed, 24 insertions(+), 2 deletions(-)
-
---- a/arch/mips/lantiq/prom.c
-+++ b/arch/mips/lantiq/prom.c
-@@ -37,6 +37,14 @@ static struct ltq_soc_info soc_info;
- /* for Multithreading (APRP), vpe.c will use it */
- unsigned long cp0_memsize;
- 
-+/*
-+ * These structs are used to override vsmp_init_secondary()
-+ */
-+#if defined(CONFIG_MIPS_MT_SMP)
-+extern const struct plat_smp_ops vsmp_smp_ops;
-+static struct plat_smp_ops lantiq_smp_ops;
-+#endif
-+
- const char *get_system_type(void)
- {
-       return soc_info.sys_type;
-@@ -100,6 +108,17 @@ void __init device_tree_init(void)
-       unflatten_and_copy_device_tree();
- }
- 
-+#if defined(CONFIG_MIPS_MT_SMP)
-+static void lantiq_init_secondary(void)
-+{
-+      /*
-+       * MIPS CPU startup function vsmp_init_secondary() will only
-+       * enable some of the interrupts for the second CPU/VPE.
-+       */
-+      set_c0_status(ST0_IM);
-+}
-+#endif
-+
- void __init prom_init(void)
- {
-       /* call the soc specific detetcion code and get it to fill soc_info */
-@@ -111,7 +130,10 @@ void __init prom_init(void)
-       prom_init_cmdline();
- 
- #if defined(CONFIG_MIPS_MT_SMP)
--      if (register_vsmp_smp_ops())
--              panic("failed to register_vsmp_smp_ops()");
-+      if (cpu_has_mipsmt) {
-+              lantiq_smp_ops = vsmp_smp_ops;
-+              lantiq_smp_ops.init_secondary = lantiq_init_secondary;
-+              register_smp_ops(&lantiq_smp_ops);
-+      }
- #endif
- }