MIPS: GIC: Random fixes and enhancements.

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

1 files changed, 18 insertions, 170 deletions

diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h
index a8f57341f123..9b9436a4d816 100644
--- a/arch/mips/include/asm/gic.h
+++ b/arch/mips/include/asm/gic.h
@@ -12,7 +12,6 @@
 #define _ASM_GICREGS_H
 
 #undef  GICISBYTELITTLEENDIAN
-#define GICISWORDLITTLEENDIAN
 
 /* Constants */
 #define GIC_POL_POS                     1
@@ -20,11 +19,7 @@
 #define GIC_TRIG_EDGE                   1
 #define GIC_TRIG_LEVEL                  0
 
-#ifdef CONFIG_SMP
 #define GIC_NUM_INTRS                   (24 + NR_CPUS * 2)
-#else
-#define GIC_NUM_INTRS                   32
-#endif
 
 #define MSK(n) ((1 << (n)) - 1)
 #define REG32(addr)             (*(volatile unsigned int *) (addr))
@@ -70,13 +65,13 @@
 #define USM_VISIBLE_SECTION_SIZE        0x10000
 
 /* Register Map for Shared Section */
-#if defined(CONFIG_CPU_LITTLE_ENDIAN) || defined(GICISWORDLITTLEENDIAN)
 
 #define GIC_SH_CONFIG_OFS               0x0000
 
 /* Shared Global Counter */
 #define GIC_SH_COUNTER_31_00_OFS        0x0010
 #define GIC_SH_COUNTER_63_32_OFS        0x0014
+#define GIC_SH_REVISIONID_OFS           0x0020
 
 /* Interrupt Polarity */
 #define GIC_SH_POL_31_0_OFS             0x0100
@@ -164,24 +159,31 @@
         (GIC_SH_INTR_MAP_TO_VPE_BASE_OFS + (32 * (intr)) + (((vpe) / 32) * 4))
 #define GIC_SH_MAP_TO_VPE_REG_BIT(vpe)  (1 << ((vpe) % 32))
 
+/* Convert an interrupt number to a byte offset/bit for multi-word registers */
+#define GIC_INTR_OFS(intr) (((intr) / 32)*4)
+#define GIC_INTR_BIT(intr) ((intr) % 32)
+
 /* Polarity : Reset Value is always 0 */
 #define GIC_SH_SET_POLARITY_OFS         0x0100
 #define GIC_SET_POLARITY(intr, pol) \
-        GICBIS(GIC_REG_ADDR(SHARED, GIC_SH_SET_POLARITY_OFS + (((intr) / 32) * 4)), (pol) << ((intr) % 32))
+        GICBIS(GIC_REG_ADDR(SHARED, GIC_SH_SET_POLARITY_OFS + \
+                GIC_INTR_OFS(intr)), (pol) << GIC_INTR_BIT(intr))
 
 /* Triggering : Reset Value is always 0 */
 #define GIC_SH_SET_TRIGGER_OFS          0x0180
 #define GIC_SET_TRIGGER(intr, trig) \
-        GICBIS(GIC_REG_ADDR(SHARED, GIC_SH_SET_TRIGGER_OFS + (((intr) / 32) * 4)), (trig) << ((intr) % 32))
+        GICBIS(GIC_REG_ADDR(SHARED, GIC_SH_SET_TRIGGER_OFS + \
+                GIC_INTR_OFS(intr)), (trig) << GIC_INTR_BIT(intr))
 
 /* Mask manipulation */
 #define GIC_SH_SMASK_OFS                0x0380
-#define GIC_SET_INTR_MASK(intr, val) \
-        GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_SMASK_OFS + (((intr) / 32) * 4)), ((val) << ((intr) % 32)))
-
+#define GIC_SET_INTR_MASK(intr) \
+        GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_SMASK_OFS + \
+                GIC_INTR_OFS(intr)), 1 << GIC_INTR_BIT(intr))
 #define GIC_SH_RMASK_OFS                0x0300
-#define GIC_CLR_INTR_MASK(intr, val) \
-        GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_RMASK_OFS + (((intr) / 32) * 4)), ((val) << ((intr) % 32)))
+#define GIC_CLR_INTR_MASK(intr) \
+        GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_RMASK_OFS + \
+                GIC_INTR_OFS(intr)), 1 << GIC_INTR_BIT(intr))
 
 /* Register Map for Local Section */
 #define GIC_VPE_CTL_OFS                 0x0000
@@ -219,161 +221,6 @@
 #define GIC_UMV_SH_COUNTER_31_00_OFS    0x0000
 #define GIC_UMV_SH_COUNTER_63_32_OFS    0x0004
 
-#else /* CONFIG_CPU_BIG_ENDIAN */
-
-#define GIC_SH_CONFIG_OFS               0x0000
-
-/* Shared Global Counter */
-#define GIC_SH_COUNTER_31_00_OFS        0x0014
-#define GIC_SH_COUNTER_63_32_OFS        0x0010
-
-/* Interrupt Polarity */
-#define GIC_SH_POL_31_0_OFS             0x0104
-#define GIC_SH_POL_63_32_OFS            0x0100
-#define GIC_SH_POL_95_64_OFS            0x010c
-#define GIC_SH_POL_127_96_OFS           0x0108
-#define GIC_SH_POL_159_128_OFS          0x0114
-#define GIC_SH_POL_191_160_OFS          0x0110
-#define GIC_SH_POL_223_192_OFS          0x011c
-#define GIC_SH_POL_255_224_OFS          0x0118
-
-/* Edge/Level Triggering */
-#define GIC_SH_TRIG_31_0_OFS            0x0184
-#define GIC_SH_TRIG_63_32_OFS           0x0180
-#define GIC_SH_TRIG_95_64_OFS           0x018c
-#define GIC_SH_TRIG_127_96_OFS          0x0188
-#define GIC_SH_TRIG_159_128_OFS         0x0194
-#define GIC_SH_TRIG_191_160_OFS         0x0190
-#define GIC_SH_TRIG_223_192_OFS         0x019c
-#define GIC_SH_TRIG_255_224_OFS         0x0198
-
-/* Dual Edge Triggering */
-#define GIC_SH_DUAL_31_0_OFS            0x0204
-#define GIC_SH_DUAL_63_32_OFS           0x0200
-#define GIC_SH_DUAL_95_64_OFS           0x020c
-#define GIC_SH_DUAL_127_96_OFS          0x0208
-#define GIC_SH_DUAL_159_128_OFS         0x0214
-#define GIC_SH_DUAL_191_160_OFS         0x0210
-#define GIC_SH_DUAL_223_192_OFS         0x021c
-#define GIC_SH_DUAL_255_224_OFS         0x0218
-
-/* Set/Clear corresponding bit in Edge Detect Register */
-#define GIC_SH_WEDGE_OFS                0x0280
-
-/* Reset Mask - Disables Interrupt */
-#define GIC_SH_RMASK_31_0_OFS           0x0304
-#define GIC_SH_RMASK_63_32_OFS          0x0300
-#define GIC_SH_RMASK_95_64_OFS          0x030c
-#define GIC_SH_RMASK_127_96_OFS         0x0308
-#define GIC_SH_RMASK_159_128_OFS        0x0314
-#define GIC_SH_RMASK_191_160_OFS        0x0310
-#define GIC_SH_RMASK_223_192_OFS        0x031c
-#define GIC_SH_RMASK_255_224_OFS        0x0318
-
-/* Set Mask (WO) - Enables Interrupt */
-#define GIC_SH_SMASK_31_0_OFS           0x0384
-#define GIC_SH_SMASK_63_32_OFS          0x0380
-#define GIC_SH_SMASK_95_64_OFS          0x038c
-#define GIC_SH_SMASK_127_96_OFS         0x0388
-#define GIC_SH_SMASK_159_128_OFS        0x0394
-#define GIC_SH_SMASK_191_160_OFS        0x0390
-#define GIC_SH_SMASK_223_192_OFS        0x039c
-#define GIC_SH_SMASK_255_224_OFS        0x0398
-
-/* Global Interrupt Mask Register (RO) - Bit Set == Interrupt enabled */
-#define GIC_SH_MASK_31_0_OFS            0x0404
-#define GIC_SH_MASK_63_32_OFS           0x0400
-#define GIC_SH_MASK_95_64_OFS           0x040c
-#define GIC_SH_MASK_127_96_OFS          0x0408
-#define GIC_SH_MASK_159_128_OFS         0x0414
-#define GIC_SH_MASK_191_160_OFS         0x0410
-#define GIC_SH_MASK_223_192_OFS         0x041c
-#define GIC_SH_MASK_255_224_OFS         0x0418
-
-/* Pending Global Interrupts (RO) */
-#define GIC_SH_PEND_31_0_OFS            0x0484
-#define GIC_SH_PEND_63_32_OFS           0x0480
-#define GIC_SH_PEND_95_64_OFS           0x048c
-#define GIC_SH_PEND_127_96_OFS          0x0488
-#define GIC_SH_PEND_159_128_OFS         0x0494
-#define GIC_SH_PEND_191_160_OFS         0x0490
-#define GIC_SH_PEND_223_192_OFS         0x049c
-#define GIC_SH_PEND_255_224_OFS         0x0498
-
-#define GIC_SH_INTR_MAP_TO_PIN_BASE_OFS 0x0500
-
-/* Maps Interrupt X to a Pin */
-#define GIC_SH_MAP_TO_PIN(intr) \
-        (GIC_SH_INTR_MAP_TO_PIN_BASE_OFS + (4 * intr))
-
-#define GIC_SH_INTR_MAP_TO_VPE_BASE_OFS 0x2004
-
-/*
- * Maps Interrupt X to a VPE.  This is more complex than the LE case, as
- * odd and even registers need to be transposed.  It does work - trust me!
- */
-#define GIC_SH_MAP_TO_VPE_REG_OFF(intr, vpe) \
-        (GIC_SH_INTR_MAP_TO_VPE_BASE_OFS + (32 * (intr)) + \
-        (((((vpe) / 32) ^ 1) - 1) * 4))
-#define GIC_SH_MAP_TO_VPE_REG_BIT(vpe)  (1 << ((vpe) % 32))
-
-/* Polarity */
-#define GIC_SH_SET_POLARITY_OFS         0x0100
-#define GIC_SET_POLARITY(intr, pol) \
-        GICBIS(GIC_REG_ADDR(SHARED, GIC_SH_SET_POLARITY_OFS + 4 + (((((intr) / 32) ^ 1) - 1) * 4)), (pol) << ((intr) % 32))
-
-/* Triggering */
-#define GIC_SH_SET_TRIGGER_OFS          0x0180
-#define GIC_SET_TRIGGER(intr, trig) \
-        GICBIS(GIC_REG_ADDR(SHARED, GIC_SH_SET_TRIGGER_OFS + 4 + (((((intr) / 32) ^ 1) - 1) * 4)), (trig) << ((intr) % 32))
-
-/* Mask manipulation */
-#define GIC_SH_SMASK_OFS                0x0380
-#define GIC_SET_INTR_MASK(intr, val) \
-        GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_SMASK_OFS + 4 + (((((intr) / 32) ^ 1) - 1) * 4)), ((val) << ((intr) % 32)))
-
-#define GIC_SH_RMASK_OFS                0x0300
-#define GIC_CLR_INTR_MASK(intr, val) \
-        GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_RMASK_OFS + 4 + (((((intr) / 32) ^ 1) - 1) * 4)), ((val) << ((intr) % 32)))
-
-/* Register Map for Local Section */
-#define GIC_VPE_CTL_OFS                 0x0000
-#define GIC_VPE_PEND_OFS                0x0004
-#define GIC_VPE_MASK_OFS                0x0008
-#define GIC_VPE_RMASK_OFS               0x000c
-#define GIC_VPE_SMASK_OFS               0x0010
-#define GIC_VPE_WD_MAP_OFS              0x0040
-#define GIC_VPE_COMPARE_MAP_OFS         0x0044
-#define GIC_VPE_TIMER_MAP_OFS           0x0048
-#define GIC_VPE_PERFCTR_MAP_OFS         0x0050
-#define GIC_VPE_SWINT0_MAP_OFS          0x0054
-#define GIC_VPE_SWINT1_MAP_OFS          0x0058
-#define GIC_VPE_OTHER_ADDR_OFS          0x0080
-#define GIC_VPE_WD_CONFIG0_OFS          0x0090
-#define GIC_VPE_WD_COUNT0_OFS           0x0094
-#define GIC_VPE_WD_INITIAL0_OFS         0x0098
-#define GIC_VPE_COMPARE_LO_OFS          0x00a4
-#define GIC_VPE_COMPARE_HI_OFS          0x00a0
-
-#define GIC_VPE_EIC_SHADOW_SET_BASE     0x0100
-#define GIC_VPE_EIC_SS(intr) \
-        (GIC_EIC_SHADOW_SET_BASE + (4 * intr))
-
-#define GIC_VPE_EIC_VEC_BASE            0x0800
-#define GIC_VPE_EIC_VEC(intr) \
-        (GIC_VPE_EIC_VEC_BASE + (4 * intr))
-
-#define GIC_VPE_TENABLE_NMI_OFS         0x1000
-#define GIC_VPE_TENABLE_YQ_OFS          0x1004
-#define GIC_VPE_TENABLE_INT_31_0_OFS    0x1080
-#define GIC_VPE_TENABLE_INT_63_32_OFS   0x1084
-
-/* User Mode Visible Section Register Map */
-#define GIC_UMV_SH_COUNTER_31_00_OFS    0x0004
-#define GIC_UMV_SH_COUNTER_63_32_OFS    0x0000
-
-#endif /* !LE */
-
 /* Masks */
 #define GIC_SH_CONFIG_COUNTSTOP_SHF     28
 #define GIC_SH_CONFIG_COUNTSTOP_MSK     (MSK(1) << GIC_SH_CONFIG_COUNTSTOP_SHF)
@@ -473,12 +320,13 @@ struct gic_intrmask_regs {
  * in building ipi_map.
  */
 struct gic_intr_map {
-        unsigned int intrnum;   /* Ext Intr Num         */
         unsigned int cpunum;    /* Directed to this CPU */
         unsigned int pin;       /* Directed to this Pin */
         unsigned int polarity;  /* Polarity : +/-       */
         unsigned int trigtype;  /* Trigger  : Edge/Levl */
-        unsigned int ipiflag;   /* Is used for IPI ?    */
+        unsigned int flags;     /* Misc flags   */
+#define GIC_FLAG_IPI           0x01
+#define GIC_FLAG_TRANSPARENT   0x02
 };
 
 extern void gic_init(unsigned long gic_base_addr,