ARM: mach-shmobile: sh7367 INTCS support

Add support for the sh7367 INTCS interrupt controller.

INTCS is the interrupt controller for the sh7367 SuperH
processor core. It is tied into the INTCA interrupt
controller which interfaces to the ARM processor.

INTCS support is implemented using a new INTC table
together with a chained interrupt handler that ties
into the already supported INTCA controller.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 171 insertions, 1 deletions

diff --git a/arch/arm/mach-shmobile/intc-sh7367.c b/arch/arm/mach-shmobile/intc-sh7367.c
index 5ff70cadfc32..c13063ff311d 100644
--- a/arch/arm/mach-shmobile/intc-sh7367.c
+++ b/arch/arm/mach-shmobile/intc-sh7367.c
@@ -263,8 +263,178 @@ static struct intc_desc intca_desc __initdata = {
                            intca_sense_registers, intca_ack_registers),
 };
 
+enum {
+        UNUSED_INTCS = 0,
+
+        INTCS,
+
+        /* interrupt sources INTCS */
+        VIO2_VEU0, VIO2_VEU1, VIO2_VEU2, VIO2_VEU3,
+        VIO3_VOU,
+        RTDMAC_1_DEI0, RTDMAC_1_DEI1, RTDMAC_1_DEI2, RTDMAC_1_DEI3,
+        VIO1_CEU, VIO1_BEU0, VIO1_BEU1, VIO1_BEU2,
+        VPU,
+        SGX530,
+        _2DDMAC_2DDM0, _2DDMAC_2DDM1, _2DDMAC_2DDM2, _2DDMAC_2DDM3,
+        IIC2_ALI2, IIC2_TACKI2, IIC2_WAITI2, IIC2_DTEI2,
+        IPMMU_IPMMUB, IPMMU_IPMMUS,
+        RTDMAC_2_DEI4, RTDMAC_2_DEI5, RTDMAC_2_DADERR,
+        MSIOF,
+        IIC0_ALI0, IIC0_TACKI0, IIC0_WAITI0, IIC0_DTEI0,
+        TMU_TUNI0, TMU_TUNI1, TMU_TUNI2,
+        CMT,
+        TSIF,
+        IPMMUI,
+        MVI3,
+        ICB,
+        PEP,
+        ASA,
+        BEM,
+        VE2HO,
+        HQE,
+        JPEG,
+        LCDC,
+
+        /* interrupt groups INTCS */
+        _2DDMAC, RTDMAC_1, RTDMAC_2, VEU, BEU, IIC0, IPMMU, IIC2,
+};
+
+static struct intc_vect intcs_vectors[] = {
+        INTCS_VECT(VIO2_VEU0, 0x700), INTCS_VECT(VIO2_VEU1, 0x720),
+        INTCS_VECT(VIO2_VEU2, 0x740), INTCS_VECT(VIO2_VEU3, 0x760),
+        INTCS_VECT(VIO3_VOU, 0x780),
+        INTCS_VECT(RTDMAC_1_DEI0, 0x800), INTCS_VECT(RTDMAC_1_DEI1, 0x820),
+        INTCS_VECT(RTDMAC_1_DEI2, 0x840), INTCS_VECT(RTDMAC_1_DEI3, 0x860),
+        INTCS_VECT(VIO1_CEU, 0x880), INTCS_VECT(VIO1_BEU0, 0x8a0),
+        INTCS_VECT(VIO1_BEU1, 0x8c0), INTCS_VECT(VIO1_BEU2, 0x8e0),
+        INTCS_VECT(VPU, 0x980),
+        INTCS_VECT(SGX530, 0x9e0),
+        INTCS_VECT(_2DDMAC_2DDM0, 0xa00), INTCS_VECT(_2DDMAC_2DDM1, 0xa20),
+        INTCS_VECT(_2DDMAC_2DDM2, 0xa40), INTCS_VECT(_2DDMAC_2DDM3, 0xa60),
+        INTCS_VECT(IIC2_ALI2, 0xa80), INTCS_VECT(IIC2_TACKI2, 0xaa0),
+        INTCS_VECT(IIC2_WAITI2, 0xac0), INTCS_VECT(IIC2_DTEI2, 0xae0),
+        INTCS_VECT(IPMMU_IPMMUB, 0xb20), INTCS_VECT(IPMMU_IPMMUS, 0xb60),
+        INTCS_VECT(RTDMAC_2_DEI4, 0xb80), INTCS_VECT(RTDMAC_2_DEI5, 0xba0),
+        INTCS_VECT(RTDMAC_2_DADERR, 0xbc0),
+        INTCS_VECT(MSIOF, 0xd20),
+        INTCS_VECT(IIC0_ALI0, 0xe00), INTCS_VECT(IIC0_TACKI0, 0xe20),
+        INTCS_VECT(IIC0_WAITI0, 0xe40), INTCS_VECT(IIC0_DTEI0, 0xe60),
+        INTCS_VECT(TMU_TUNI0, 0xe80), INTCS_VECT(TMU_TUNI1, 0xea0),
+        INTCS_VECT(TMU_TUNI2, 0xec0),
+        INTCS_VECT(CMT, 0xf00),
+        INTCS_VECT(TSIF, 0xf20),
+        INTCS_VECT(IPMMUI, 0xf60),
+        INTCS_VECT(MVI3, 0x420),
+        INTCS_VECT(ICB, 0x480),
+        INTCS_VECT(PEP, 0x4a0),
+        INTCS_VECT(ASA, 0x4c0),
+        INTCS_VECT(BEM, 0x4e0),
+        INTCS_VECT(VE2HO, 0x520),
+        INTCS_VECT(HQE, 0x540),
+        INTCS_VECT(JPEG, 0x560),
+        INTCS_VECT(LCDC, 0x580),
+
+        INTC_VECT(INTCS, 0xf80),
+};
+
+static struct intc_group intcs_groups[] __initdata = {
+        INTC_GROUP(_2DDMAC, _2DDMAC_2DDM0, _2DDMAC_2DDM1,
+                   _2DDMAC_2DDM2, _2DDMAC_2DDM3),
+        INTC_GROUP(RTDMAC_1, RTDMAC_1_DEI0, RTDMAC_1_DEI1,
+                   RTDMAC_1_DEI2, RTDMAC_1_DEI3),
+        INTC_GROUP(RTDMAC_2, RTDMAC_2_DEI4, RTDMAC_2_DEI5, RTDMAC_2_DADERR),
+        INTC_GROUP(VEU, VIO2_VEU0, VIO2_VEU1, VIO2_VEU2, VIO2_VEU3),
+        INTC_GROUP(BEU, VIO1_BEU0, VIO1_BEU1, VIO1_BEU2),
+        INTC_GROUP(IIC0, IIC0_ALI0, IIC0_TACKI0, IIC0_WAITI0, IIC0_DTEI0),
+        INTC_GROUP(IPMMU, IPMMU_IPMMUS, IPMMU_IPMMUB),
+        INTC_GROUP(IIC2, IIC2_ALI2, IIC2_TACKI2, IIC2_WAITI2, IIC2_DTEI2),
+};
+
+static struct intc_mask_reg intcs_mask_registers[] = {
+        { 0xffd20184, 0xffd201c4, 8, /* IMR1SA / IMCR1SA */
+          { VIO1_BEU2, VIO1_BEU1, VIO1_BEU0, VIO1_CEU,
+            VIO2_VEU3, VIO2_VEU2, VIO2_VEU1, VIO2_VEU0 } },
+        { 0xffd20188, 0xffd201c8, 8, /* IMR2SA / IMCR2SA */
+          { VIO3_VOU, 0, VE2HO, VPU,
+            0, 0, 0, 0 } },
+        { 0xffd2018c, 0xffd201cc, 8, /* IMR3SA / IMCR3SA */
+          { _2DDMAC_2DDM3, _2DDMAC_2DDM2, _2DDMAC_2DDM1, _2DDMAC_2DDM0,
+            BEM, ASA, PEP, ICB } },
+        { 0xffd20190, 0xffd201d0, 8, /* IMR4SA / IMCR4SA */
+          { 0, 0, MVI3, 0,
+            JPEG, HQE, 0, LCDC } },
+        { 0xffd20194, 0xffd201d4, 8, /* IMR5SA / IMCR5SA */
+          { 0, RTDMAC_2_DADERR, RTDMAC_2_DEI5, RTDMAC_2_DEI4,
+            RTDMAC_1_DEI3, RTDMAC_1_DEI2, RTDMAC_1_DEI1, RTDMAC_1_DEI0 } },
+        { 0xffd20198, 0xffd201d8, 8, /* IMR6SA / IMCR6SA */
+          { 0, 0, MSIOF, 0,
+            SGX530, 0, 0, 0 } },
+        { 0xffd2019c, 0xffd201dc, 8, /* IMR7SA / IMCR7SA */
+          { 0, TMU_TUNI2, TMU_TUNI1, TMU_TUNI0,
+            0, 0, 0, 0 } },
+        { 0xffd201a4, 0xffd201e4, 8, /* IMR9SA / IMCR9SA */
+          { 0, 0, 0, CMT,
+            IIC2_DTEI2, IIC2_WAITI2, IIC2_TACKI2, IIC2_ALI2 } },
+        { 0xffd201a8, 0xffd201e8, 8, /* IMR10SA / IMCR10SA */
+          { IPMMU_IPMMUS, 0, IPMMU_IPMMUB, 0,
+            0, 0, 0, 0 } },
+        { 0xffd201ac, 0xffd201ec, 8, /* IMR11SA / IMCR11SA */
+          { IIC0_DTEI0, IIC0_WAITI0, IIC0_TACKI0, IIC0_ALI0,
+            0, 0, IPMMUI, TSIF } },
+        { 0xffd20104, 0, 16, /* INTAMASK */
+          { 0, 0, 0, 0, 0, 0, 0, 0,
+            0, 0, 0, 0, 0, 0, 0, INTCS } },
+};
+
+/* Priority is needed for INTCA to receive the INTCS interrupt */
+static struct intc_prio_reg intcs_prio_registers[] = {
+        { 0xffd20000, 0, 16, 4, /* IPRAS */ { 0, MVI3, _2DDMAC, ICB } },
+        { 0xffd20004, 0, 16, 4, /* IPRBS */ { JPEG, LCDC, 0, 0 } },
+        { 0xffd20008, 0, 16, 4, /* IPRCS */ { BBIF2, 0, 0, 0 } },
+        { 0xffd20010, 0, 16, 4, /* IPRES */ { RTDMAC_1, VIO1_CEU, 0, VPU } },
+        { 0xffd20014, 0, 16, 4, /* IPRFS */ { 0, RTDMAC_2, 0, CMT } },
+        { 0xffd20018, 0, 16, 4, /* IPRGS */ { TMU_TUNI0, TMU_TUNI1,
+                                              TMU_TUNI2, 0 } },
+        { 0xffd2001c, 0, 16, 4, /* IPRHS */ { 0, VIO3_VOU, VEU, BEU } },
+        { 0xffd20020, 0, 16, 4, /* IPRIS */ { 0, MSIOF, TSIF, IIC0 } },
+        { 0xffd20024, 0, 16, 4, /* IPRJS */ { 0, SGX530, 0, 0 } },
+        { 0xffd20028, 0, 16, 4, /* IPRKS */ { BEM, ASA, IPMMUI, PEP } },
+        { 0xffd2002c, 0, 16, 4, /* IPRLS */ { IPMMU, 0, VE2HO, HQE } },
+        { 0xffd20030, 0, 16, 4, /* IPRMS */ { IIC2, 0, 0, 0 } },
+};
+
+static struct resource intcs_resources[] __initdata = {
+        [0] = {
+                .start  = 0xffd20000,
+                .end    = 0xffd2ffff,
+                .flags  = IORESOURCE_MEM,
+        }
+};
+
+static struct intc_desc intcs_desc __initdata = {
+        .name = "sh7367-intcs",
+        .resource = intcs_resources,
+        .num_resources = ARRAY_SIZE(intcs_resources),
+        .hw = INTC_HW_DESC(intcs_vectors, intcs_groups, intcs_mask_registers,
+                           intcs_prio_registers, NULL, NULL),
+};
+
+static void intcs_demux(unsigned int irq, struct irq_desc *desc)
+{
+        void __iomem *reg = (void *)get_irq_data(irq);
+        unsigned int evtcodeas = ioread32(reg);
+
+        generic_handle_irq(intcs_evt2irq(evtcodeas));
+}
+
 void __init sh7367_init_irq(void)
 {
-        /* INTCA */
+        void __iomem *intevtsa = ioremap_nocache(0xffd20100, PAGE_SIZE);
+
         register_intc_controller(&intca_desc);
+        register_intc_controller(&intcs_desc);
+
+        /* demux using INTEVTSA */
+        set_irq_data(evt2irq(0xf80), (void *)intevtsa);
+        set_irq_chained_handler(evt2irq(0xf80), intcs_demux);
 }