MIPS: Octeon: Rewrite interrupt handling code.

This includes conversion to new style irq_chip functions, and
correctly enabling/disabling per-CPU interrupts.

The hardware interrupt bit to irq number mapping is now done with a
flexible map, instead of by bit twiddling the irq number.

[ tglx: Adjusted to new irq_cpu_on/offline callbacks and
        __irq_set_affinity_lock ]

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: ralf@linux-mips.org
LKML-Reference: <1301081931-11240-5-git-send-email-ddaney@caviumnetworks.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 83 insertions, 162 deletions

diff --git a/arch/mips/include/asm/mach-cavium-octeon/irq.h b/arch/mips/include/asm/mach-cavium-octeon/irq.h
index 6ddab8aef644..5b05f186e395 100644
--- a/arch/mips/include/asm/mach-cavium-octeon/irq.h
+++ b/arch/mips/include/asm/mach-cavium-octeon/irq.h
@@ -11,172 +11,91 @@
 #define NR_IRQS OCTEON_IRQ_LAST
 #define MIPS_CPU_IRQ_BASE OCTEON_IRQ_SW0
 
-/* 0 - 7 represent the i8259 master */
-#define OCTEON_IRQ_I8259M0	0
-#define OCTEON_IRQ_I8259M1	1
-#define OCTEON_IRQ_I8259M2	2
-#define OCTEON_IRQ_I8259M3	3
-#define OCTEON_IRQ_I8259M4	4
-#define OCTEON_IRQ_I8259M5	5
-#define OCTEON_IRQ_I8259M6	6
-#define OCTEON_IRQ_I8259M7	7
-/* 8 - 15 represent the i8259 slave */
-#define OCTEON_IRQ_I8259S0	8
-#define OCTEON_IRQ_I8259S1	9
-#define OCTEON_IRQ_I8259S2	10
-#define OCTEON_IRQ_I8259S3	11
-#define OCTEON_IRQ_I8259S4	12
-#define OCTEON_IRQ_I8259S5	13
-#define OCTEON_IRQ_I8259S6	14
-#define OCTEON_IRQ_I8259S7	15
-/* 16 - 23 represent the 8 MIPS standard interrupt sources */
-#define OCTEON_IRQ_SW0		16
-#define OCTEON_IRQ_SW1		17
-#define OCTEON_IRQ_CIU0		18
-#define OCTEON_IRQ_CIU1		19
-#define OCTEON_IRQ_CIU4		20
-#define OCTEON_IRQ_5		21
-#define OCTEON_IRQ_PERF		22
-#define OCTEON_IRQ_TIMER	23
-/* 24 - 87 represent the sources in CIU_INTX_EN0 */
-#define OCTEON_IRQ_WORKQ0	24
-#define OCTEON_IRQ_WORKQ1	25
-#define OCTEON_IRQ_WORKQ2	26
-#define OCTEON_IRQ_WORKQ3	27
-#define OCTEON_IRQ_WORKQ4	28
-#define OCTEON_IRQ_WORKQ5	29
-#define OCTEON_IRQ_WORKQ6	30
-#define OCTEON_IRQ_WORKQ7	31
-#define OCTEON_IRQ_WORKQ8	32
-#define OCTEON_IRQ_WORKQ9	33
-#define OCTEON_IRQ_WORKQ10	34
-#define OCTEON_IRQ_WORKQ11	35
-#define OCTEON_IRQ_WORKQ12	36
-#define OCTEON_IRQ_WORKQ13	37
-#define OCTEON_IRQ_WORKQ14	38
-#define OCTEON_IRQ_WORKQ15	39
-#define OCTEON_IRQ_GPIO0	40
-#define OCTEON_IRQ_GPIO1	41
-#define OCTEON_IRQ_GPIO2	42
-#define OCTEON_IRQ_GPIO3	43
-#define OCTEON_IRQ_GPIO4	44
-#define OCTEON_IRQ_GPIO5	45
-#define OCTEON_IRQ_GPIO6	46
-#define OCTEON_IRQ_GPIO7	47
-#define OCTEON_IRQ_GPIO8	48
-#define OCTEON_IRQ_GPIO9	49
-#define OCTEON_IRQ_GPIO10	50
-#define OCTEON_IRQ_GPIO11	51
-#define OCTEON_IRQ_GPIO12	52
-#define OCTEON_IRQ_GPIO13	53
-#define OCTEON_IRQ_GPIO14	54
-#define OCTEON_IRQ_GPIO15	55
-#define OCTEON_IRQ_MBOX0	56
-#define OCTEON_IRQ_MBOX1	57
-#define OCTEON_IRQ_UART0	58
-#define OCTEON_IRQ_UART1	59
-#define OCTEON_IRQ_PCI_INT0	60
-#define OCTEON_IRQ_PCI_INT1	61
-#define OCTEON_IRQ_PCI_INT2	62
-#define OCTEON_IRQ_PCI_INT3	63
-#define OCTEON_IRQ_PCI_MSI0	64
-#define OCTEON_IRQ_PCI_MSI1	65
-#define OCTEON_IRQ_PCI_MSI2	66
-#define OCTEON_IRQ_PCI_MSI3	67
-#define OCTEON_IRQ_RESERVED68	68	/* Summary of CIU_INT_SUM1 */
-#define OCTEON_IRQ_TWSI		69
-#define OCTEON_IRQ_RML		70
-#define OCTEON_IRQ_TRACE	71
-#define OCTEON_IRQ_GMX_DRP0	72
-#define OCTEON_IRQ_GMX_DRP1	73
-#define OCTEON_IRQ_IPD_DRP	74
-#define OCTEON_IRQ_KEY_ZERO	75
-#define OCTEON_IRQ_TIMER0	76
-#define OCTEON_IRQ_TIMER1	77
-#define OCTEON_IRQ_TIMER2	78
-#define OCTEON_IRQ_TIMER3	79
-#define OCTEON_IRQ_USB0		80
-#define OCTEON_IRQ_PCM		81
-#define OCTEON_IRQ_MPI		82
-#define OCTEON_IRQ_TWSI2	83
-#define OCTEON_IRQ_POWIQ	84
-#define OCTEON_IRQ_IPDPPTHR	85
-#define OCTEON_IRQ_MII0		86
-#define OCTEON_IRQ_BOOTDMA	87
-/* 88 - 151 represent the sources in CIU_INTX_EN1 */
-#define OCTEON_IRQ_WDOG0	88
-#define OCTEON_IRQ_WDOG1	89
-#define OCTEON_IRQ_WDOG2	90
-#define OCTEON_IRQ_WDOG3	91
-#define OCTEON_IRQ_WDOG4	92
-#define OCTEON_IRQ_WDOG5	93
-#define OCTEON_IRQ_WDOG6	94
-#define OCTEON_IRQ_WDOG7	95
-#define OCTEON_IRQ_WDOG8	96
-#define OCTEON_IRQ_WDOG9	97
-#define OCTEON_IRQ_WDOG10	98
-#define OCTEON_IRQ_WDOG11	99
-#define OCTEON_IRQ_WDOG12	100
-#define OCTEON_IRQ_WDOG13	101
-#define OCTEON_IRQ_WDOG14	102
-#define OCTEON_IRQ_WDOG15	103
-#define OCTEON_IRQ_UART2	104
-#define OCTEON_IRQ_USB1		105
-#define OCTEON_IRQ_MII1		106
-#define OCTEON_IRQ_RESERVED107	107
-#define OCTEON_IRQ_RESERVED108	108
-#define OCTEON_IRQ_RESERVED109	109
-#define OCTEON_IRQ_RESERVED110	110
-#define OCTEON_IRQ_RESERVED111	111
-#define OCTEON_IRQ_RESERVED112	112
-#define OCTEON_IRQ_RESERVED113	113
-#define OCTEON_IRQ_RESERVED114	114
-#define OCTEON_IRQ_RESERVED115	115
-#define OCTEON_IRQ_RESERVED116	116
-#define OCTEON_IRQ_RESERVED117	117
-#define OCTEON_IRQ_RESERVED118	118
-#define OCTEON_IRQ_RESERVED119	119
-#define OCTEON_IRQ_RESERVED120	120
-#define OCTEON_IRQ_RESERVED121	121
-#define OCTEON_IRQ_RESERVED122	122
-#define OCTEON_IRQ_RESERVED123	123
-#define OCTEON_IRQ_RESERVED124	124
-#define OCTEON_IRQ_RESERVED125	125
-#define OCTEON_IRQ_RESERVED126	126
-#define OCTEON_IRQ_RESERVED127	127
-#define OCTEON_IRQ_RESERVED128	128
-#define OCTEON_IRQ_RESERVED129	129
-#define OCTEON_IRQ_RESERVED130	130
-#define OCTEON_IRQ_RESERVED131	131
-#define OCTEON_IRQ_RESERVED132	132
-#define OCTEON_IRQ_RESERVED133	133
-#define OCTEON_IRQ_RESERVED134	134
-#define OCTEON_IRQ_RESERVED135	135
-#define OCTEON_IRQ_RESERVED136	136
-#define OCTEON_IRQ_RESERVED137	137
-#define OCTEON_IRQ_RESERVED138	138
-#define OCTEON_IRQ_RESERVED139	139
-#define OCTEON_IRQ_RESERVED140	140
-#define OCTEON_IRQ_RESERVED141	141
-#define OCTEON_IRQ_RESERVED142	142
-#define OCTEON_IRQ_RESERVED143	143
-#define OCTEON_IRQ_RESERVED144	144
-#define OCTEON_IRQ_RESERVED145	145
-#define OCTEON_IRQ_RESERVED146	146
-#define OCTEON_IRQ_RESERVED147	147
-#define OCTEON_IRQ_RESERVED148	148
-#define OCTEON_IRQ_RESERVED149	149
-#define OCTEON_IRQ_RESERVED150	150
-#define OCTEON_IRQ_RESERVED151	151
+enum octeon_irq {
+/* 1 - 8 represent the 8 MIPS standard interrupt sources */
+	OCTEON_IRQ_SW0 = 1,
+	OCTEON_IRQ_SW1,
+/* CIU0, CUI2, CIU4 are 3, 4, 5 */
+	OCTEON_IRQ_5 = 6,
+	OCTEON_IRQ_PERF,
+	OCTEON_IRQ_TIMER,
+/* sources in CIU_INTX_EN0 */
+	OCTEON_IRQ_WORKQ0,
+	OCTEON_IRQ_GPIO0 = OCTEON_IRQ_WORKQ0 + 16,
+	OCTEON_IRQ_WDOG0 = OCTEON_IRQ_GPIO0 + 16,
+	OCTEON_IRQ_WDOG15 = OCTEON_IRQ_WDOG0 + 15,
+	OCTEON_IRQ_MBOX0 = OCTEON_IRQ_WDOG0 + 16,
+	OCTEON_IRQ_MBOX1,
+	OCTEON_IRQ_UART0,
+	OCTEON_IRQ_UART1,
+	OCTEON_IRQ_UART2,
+	OCTEON_IRQ_PCI_INT0,
+	OCTEON_IRQ_PCI_INT1,
+	OCTEON_IRQ_PCI_INT2,
+	OCTEON_IRQ_PCI_INT3,
+	OCTEON_IRQ_PCI_MSI0,
+	OCTEON_IRQ_PCI_MSI1,
+	OCTEON_IRQ_PCI_MSI2,
+	OCTEON_IRQ_PCI_MSI3,
+
+	OCTEON_IRQ_TWSI,
+	OCTEON_IRQ_TWSI2,
+	OCTEON_IRQ_RML,
+	OCTEON_IRQ_TRACE0,
+	OCTEON_IRQ_GMX_DRP0 = OCTEON_IRQ_TRACE0 + 4,
+	OCTEON_IRQ_IPD_DRP = OCTEON_IRQ_GMX_DRP0 + 5,
+	OCTEON_IRQ_KEY_ZERO,
+	OCTEON_IRQ_TIMER0,
+	OCTEON_IRQ_TIMER1,
+	OCTEON_IRQ_TIMER2,
+	OCTEON_IRQ_TIMER3,
+	OCTEON_IRQ_USB0,
+	OCTEON_IRQ_USB1,
+	OCTEON_IRQ_PCM,
+	OCTEON_IRQ_MPI,
+	OCTEON_IRQ_POWIQ,
+	OCTEON_IRQ_IPDPPTHR,
+	OCTEON_IRQ_MII0,
+	OCTEON_IRQ_MII1,
+	OCTEON_IRQ_BOOTDMA,
+
+	OCTEON_IRQ_NAND,
+	OCTEON_IRQ_MIO,		/* Summary of MIO_BOOT_ERR */
+	OCTEON_IRQ_IOB,		/* Summary of IOB_INT_SUM */
+	OCTEON_IRQ_FPA,		/* Summary of FPA_INT_SUM */
+	OCTEON_IRQ_POW,		/* Summary of POW_ECC_ERR */
+	OCTEON_IRQ_L2C,		/* Summary of L2C_INT_STAT */
+	OCTEON_IRQ_IPD,		/* Summary of IPD_INT_SUM */
+	OCTEON_IRQ_PIP,		/* Summary of PIP_INT_REG */
+	OCTEON_IRQ_PKO,		/* Summary of PKO_REG_ERROR */
+	OCTEON_IRQ_ZIP,		/* Summary of ZIP_ERROR */
+	OCTEON_IRQ_TIM,		/* Summary of TIM_REG_ERROR */
+	OCTEON_IRQ_RAD,		/* Summary of RAD_REG_ERROR */
+	OCTEON_IRQ_KEY,		/* Summary of KEY_INT_SUM */
+	OCTEON_IRQ_DFA,		/* Summary of DFA */
+	OCTEON_IRQ_USBCTL,	/* Summary of USBN0_INT_SUM */
+	OCTEON_IRQ_SLI,		/* Summary of SLI_INT_SUM */
+	OCTEON_IRQ_DPI,		/* Summary of DPI_INT_SUM */
+	OCTEON_IRQ_AGX0,	/* Summary of GMX0*+PCS0_INT*_REG */
+	OCTEON_IRQ_AGL  = OCTEON_IRQ_AGX0 + 5,
+	OCTEON_IRQ_PTP,
+	OCTEON_IRQ_PEM0,
+	OCTEON_IRQ_PEM1,
+	OCTEON_IRQ_SRIO0,
+	OCTEON_IRQ_SRIO1,
+	OCTEON_IRQ_LMC0,
+	OCTEON_IRQ_DFM = OCTEON_IRQ_LMC0 + 4,		/* Summary of DFM */
+	OCTEON_IRQ_RST,
+};
 
 #ifdef CONFIG_PCI_MSI
-/* 152 - 215 represent the MSI interrupts 0-63 */
-#define OCTEON_IRQ_MSI_BIT0	152
-#define OCTEON_IRQ_MSI_LAST	(OCTEON_IRQ_MSI_BIT0 + 255)
+/* 152 - 407 represent the MSI interrupts 0-255 */
+#define OCTEON_IRQ_MSI_BIT0	(OCTEON_IRQ_RST + 1)
 
-#define OCTEON_IRQ_LAST		(OCTEON_IRQ_MSI_LAST + 1)
+#define OCTEON_IRQ_MSI_LAST      (OCTEON_IRQ_MSI_BIT0 + 255)
+#define OCTEON_IRQ_LAST          (OCTEON_IRQ_MSI_LAST + 1)
 #else
-#define OCTEON_IRQ_LAST         152
+#define OCTEON_IRQ_LAST         (OCTEON_IRQ_RST + 1)
 #endif
 
 #endif
diff --git a/arch/mips/include/asm/octeon/octeon.h b/arch/mips/include/asm/octeon/octeon.h
index 6b34afd0d4e7..f72f768cd3a4 100644
--- a/arch/mips/include/asm/octeon/octeon.h
+++ b/arch/mips/include/asm/octeon/octeon.h
@@ -257,4 +257,6 @@ extern struct cvmx_bootinfo *octeon_bootinfo;
 
 extern uint64_t octeon_bootloader_entry_addr;
 
+extern void (*octeon_irq_setup_secondary)(void);
+
 #endif /* __ASM_OCTEON_OCTEON_H */