[MIPS] MT: Reenable EIC support and add support for SOCit SC.

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/Kconfig

@@ -1557,6 +1557,7 @@ config MIPS_MT_SMP
 	bool "Use 1 TC on each available VPE for SMP"
 	depends on SYS_SUPPORTS_MULTITHREADING
 	select CPU_MIPSR2_IRQ_VI
+	select CPU_MIPSR2_IRQ_EI
 	select CPU_MIPSR2_SRS
 	select MIPS_MT
 	select NR_CPUS_DEFAULT_2
@@ -1572,6 +1573,7 @@ config MIPS_MT_SMTC
 	#depends on CPU_MIPS64_R2		# once there is hardware ...
 	depends on SYS_SUPPORTS_MULTITHREADING
 	select CPU_MIPSR2_IRQ_VI
+	select CPU_MIPSR2_IRQ_EI
 	select CPU_MIPSR2_SRS
 	select MIPS_MT
 	select NR_CPUS_DEFAULT_8
@@ -1584,6 +1586,8 @@ config MIPS_MT_SMTC
 config MIPS_VPE_LOADER
 	bool "VPE loader support."
 	depends on SYS_SUPPORTS_MULTITHREADING
+	select CPU_MIPSR2_IRQ_VI
+	select CPU_MIPSR2_IRQ_EI
 	select MIPS_MT
 	help
 	  Includes a loader for loading an elf relocatable object

arch/mips/kernel/irq-msc01.c

@@ -132,11 +132,11 @@ struct irq_chip msc_edgeirq_type = {
 };
 
 
-void __init init_msc_irqs(unsigned int base, msc_irqmap_t *imp, int nirq)
+void __init init_msc_irqs(unsigned long icubase, unsigned int irqbase, msc_irqmap_t *imp, int nirq)
 {
 	extern void (*board_bind_eic_interrupt)(unsigned int irq, unsigned int regset);
 
-	_icctrl_msc = (unsigned long) ioremap (MIPS_MSC01_IC_REG_BASE, 0x40000);
+	_icctrl_msc = (unsigned long) ioremap (icubase, 0x40000);
 
 	/* Reset interrupt controller - initialises all registers to 0 */
 	MSCIC_WRITE(MSC01_IC_RST, MSC01_IC_RST_RST_BIT);
@@ -148,14 +148,14 @@ void __init init_msc_irqs(unsigned int base, msc_irqmap_t *imp, int nirq)
 
 		switch (imp->im_type) {
 		case MSC01_IRQ_EDGE:
-			set_irq_chip(base+n, &msc_edgeirq_type);
+			set_irq_chip(irqbase+n, &msc_edgeirq_type);
 			if (cpu_has_veic)
 				MSCIC_WRITE(MSC01_IC_SUP+n*8, MSC01_IC_SUP_EDGE_BIT);
 			else
 				MSCIC_WRITE(MSC01_IC_SUP+n*8, MSC01_IC_SUP_EDGE_BIT | imp->im_lvl);
 			break;
 		case MSC01_IRQ_LEVEL:
-			set_irq_chip(base+n, &msc_levelirq_type);
+			set_irq_chip(irqbase+n, &msc_levelirq_type);
 			if (cpu_has_veic)
 				MSCIC_WRITE(MSC01_IC_SUP+n*8, 0);
 			else
@@ -163,7 +163,7 @@ void __init init_msc_irqs(unsigned int base, msc_irqmap_t *imp, int nirq)
 		}
 	}
 
-	irq_base = base;
+	irq_base = irqbase;
 
 	MSCIC_WRITE(MSC01_IC_GENA, MSC01_IC_GENA_GENA_BIT);	/* Enable interrupt generation */
 

arch/mips/mips-boards/malta/malta_int.c

@@ -311,16 +311,21 @@ void __init arch_init_irq(void)
 	if (!cpu_has_veic)
 		mips_cpu_irq_init();
 
-        switch(mips_revision_corid) {
-        case MIPS_REVISION_CORID_CORE_MSC:
-        case MIPS_REVISION_CORID_CORE_FPGA2:
-        case MIPS_REVISION_CORID_CORE_FPGA3:
-        case MIPS_REVISION_CORID_CORE_24K:
-        case MIPS_REVISION_CORID_CORE_EMUL_MSC:
+        switch(mips_revision_sconid) {
+        case MIPS_REVISION_SCON_SOCIT:
+        case MIPS_REVISION_SCON_ROCIT:
+		if (cpu_has_veic)
+			init_msc_irqs (MIPS_MSC01_IC_REG_BASE, MSC01E_INT_BASE, msc_eicirqmap, msc_nr_eicirqs);
+		else
+			init_msc_irqs (MIPS_MSC01_IC_REG_BASE, MSC01C_INT_BASE, msc_irqmap, msc_nr_irqs);
+		break;
+
+        case MIPS_REVISION_SCON_SOCITSC:
+        case MIPS_REVISION_SCON_SOCITSCP:
 		if (cpu_has_veic)
-			init_msc_irqs (MSC01E_INT_BASE, msc_eicirqmap, msc_nr_eicirqs);
+			init_msc_irqs (MIPS_SOCITSC_IC_REG_BASE, MSC01E_INT_BASE, msc_eicirqmap, msc_nr_eicirqs);
 		else
-			init_msc_irqs (MSC01C_INT_BASE, msc_irqmap, msc_nr_irqs);
+			init_msc_irqs (MIPS_SOCITSC_IC_REG_BASE, MSC01C_INT_BASE, msc_irqmap, msc_nr_irqs);
 	}
 
 	if (cpu_has_veic) {

include/asm-mips/mips-boards/malta.h

@@ -25,6 +25,10 @@
 #include <asm/mips-boards/msc01_pci.h>
 #include <asm/gt64120.h>
 
+/* Mips interrupt controller found in SOCit variations */
+#define MIPS_MSC01_IC_REG_BASE		0x1bc40000
+#define MIPS_SOCITSC_IC_REG_BASE	0x1ffa0000
+
 /*
  * Malta I/O ports base address for the Galileo GT64120 and Algorithmics
  * Bonito system controllers.

include/asm-mips/msc01_ic.h

@@ -94,10 +94,7 @@
 /*
  * MIPS System controller interrupt register base.
  *
- * FIXME - are these macros specific to Malta and co or to the MSC?  If the
- * latter, they should be moved elsewhere.
  */
-#define MIPS_MSC01_IC_REG_BASE	0x1bc40000
 
 /*****************************************************************************
  * Absolute register addresses
@@ -144,7 +141,7 @@ typedef struct msc_irqmap {
 #define MSC01_IRQ_LEVEL		0
 #define MSC01_IRQ_EDGE		1
 
-extern void __init init_msc_irqs(unsigned int base, msc_irqmap_t *imp, int nirq);
+extern void __init init_msc_irqs(unsigned long icubase, unsigned int base, msc_irqmap_t *imp, int nirq);
 extern void ll_msc_irq(void);
 
 #endif /* __ASM_MIPS_BOARDS_MSC01_IC_H */