MIPS: BMIPS: Let each platform customize the CPU1 IRQ mask
On some chips like bcm3384, "other stuff" gets wired up to CPU1's IE_IRQ1
input, generating spurious IRQs. In this case we want the platform code
to be able to mask it off.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: f.fainelli@gmail.com
Cc: mbizon@freebox.fr
Cc: jogo@openwrt.org
Cc: jfraser@broadcom.com
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8163/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/include/asm/bmips.h b/arch/mips/include/asm/bmips.h
index cbacceb..30939b0 100644
--- a/arch/mips/include/asm/bmips.h
+++ b/arch/mips/include/asm/bmips.h
@@ -84,6 +84,7 @@
extern int bmips_smp_enabled;
extern int bmips_cpu_offset;
extern cpumask_t bmips_booted_mask;
+extern unsigned long bmips_tp1_irqs;
extern void bmips_ebase_setup(void);
extern asmlinkage void plat_wired_tlb_setup(void);
diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c
index 162391d..b8bd934 100644
--- a/arch/mips/kernel/smp-bmips.c
+++ b/arch/mips/kernel/smp-bmips.c
@@ -43,6 +43,7 @@
int bmips_smp_enabled = 1;
int bmips_cpu_offset;
cpumask_t bmips_booted_mask;
+unsigned long bmips_tp1_irqs = IE_IRQ1;
#define RESET_FROM_KSEG0 0x80080800
#define RESET_FROM_KSEG1 0xa0080800
@@ -257,7 +258,7 @@
write_c0_compare(read_c0_count() + mips_hpt_frequency / HZ);
irq_enable_hazard();
- set_c0_status(IE_SW0 | IE_SW1 | IE_IRQ1 | IE_IRQ5 | ST0_IE);
+ set_c0_status(IE_SW0 | IE_SW1 | bmips_tp1_irqs | IE_IRQ5 | ST0_IE);
irq_enable_hazard();
}
@@ -387,7 +388,8 @@
* IRQ handlers; this clears ST0_IE and returns immediately.
*/
clear_c0_cause(CAUSEF_IV | C_SW0 | C_SW1);
- change_c0_status(IE_IRQ5 | IE_IRQ1 | IE_SW0 | IE_SW1 | ST0_IE | ST0_BEV,
+ change_c0_status(
+ IE_IRQ5 | bmips_tp1_irqs | IE_SW0 | IE_SW1 | ST0_IE | ST0_BEV,
IE_SW0 | IE_SW1 | ST0_IE | ST0_BEV);
irq_disable_hazard();
