| #ifndef _ASM_POWERPC_MPIC_H |
| #define _ASM_POWERPC_MPIC_H |
| #ifdef __KERNEL__ |
| |
| #include <linux/irq.h> |
| #include <asm/dcr.h> |
| #include <asm/msi_bitmap.h> |
| |
| /* |
| * Global registers |
| */ |
| |
| #define MPIC_GREG_BASE 0x01000 |
| |
| #define MPIC_GREG_FEATURE_0 0x00000 |
| #define MPIC_GREG_FEATURE_LAST_SRC_MASK 0x07ff0000 |
| #define MPIC_GREG_FEATURE_LAST_SRC_SHIFT 16 |
| #define MPIC_GREG_FEATURE_LAST_CPU_MASK 0x00001f00 |
| #define MPIC_GREG_FEATURE_LAST_CPU_SHIFT 8 |
| #define MPIC_GREG_FEATURE_VERSION_MASK 0xff |
| #define MPIC_GREG_FEATURE_1 0x00010 |
| #define MPIC_GREG_GLOBAL_CONF_0 0x00020 |
| #define MPIC_GREG_GCONF_RESET 0x80000000 |
| /* On the FSL mpic implementations the Mode field is expand to be |
| * 2 bits wide: |
| * 0b00 = pass through (interrupts routed to IRQ0) |
| * 0b01 = Mixed mode |
| * 0b10 = reserved |
| * 0b11 = External proxy / coreint |
| */ |
| #define MPIC_GREG_GCONF_COREINT 0x60000000 |
| #define MPIC_GREG_GCONF_8259_PTHROU_DIS 0x20000000 |
| #define MPIC_GREG_GCONF_NO_BIAS 0x10000000 |
| #define MPIC_GREG_GCONF_BASE_MASK 0x000fffff |
| #define MPIC_GREG_GCONF_MCK 0x08000000 |
| #define MPIC_GREG_GLOBAL_CONF_1 0x00030 |
| #define MPIC_GREG_GLOBAL_CONF_1_SIE 0x08000000 |
| #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK 0x70000000 |
| #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO(r) \ |
| (((r) << 28) & MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK) |
| #define MPIC_GREG_VENDOR_0 0x00040 |
| #define MPIC_GREG_VENDOR_1 0x00050 |
| #define MPIC_GREG_VENDOR_2 0x00060 |
| #define MPIC_GREG_VENDOR_3 0x00070 |
| #define MPIC_GREG_VENDOR_ID 0x00080 |
| #define MPIC_GREG_VENDOR_ID_STEPPING_MASK 0x00ff0000 |
| #define MPIC_GREG_VENDOR_ID_STEPPING_SHIFT 16 |
| #define MPIC_GREG_VENDOR_ID_DEVICE_ID_MASK 0x0000ff00 |
| #define MPIC_GREG_VENDOR_ID_DEVICE_ID_SHIFT 8 |
| #define MPIC_GREG_VENDOR_ID_VENDOR_ID_MASK 0x000000ff |
| #define MPIC_GREG_PROCESSOR_INIT 0x00090 |
| #define MPIC_GREG_IPI_VECTOR_PRI_0 0x000a0 |
| #define MPIC_GREG_IPI_VECTOR_PRI_1 0x000b0 |
| #define MPIC_GREG_IPI_VECTOR_PRI_2 0x000c0 |
| #define MPIC_GREG_IPI_VECTOR_PRI_3 0x000d0 |
| #define MPIC_GREG_IPI_STRIDE 0x10 |
| #define MPIC_GREG_SPURIOUS 0x000e0 |
| #define MPIC_GREG_TIMER_FREQ 0x000f0 |
| |
| /* |
| * |
| * Timer registers |
| */ |
| #define MPIC_TIMER_BASE 0x01100 |
| #define MPIC_TIMER_STRIDE 0x40 |
| |
| #define MPIC_TIMER_CURRENT_CNT 0x00000 |
| #define MPIC_TIMER_BASE_CNT 0x00010 |
| #define MPIC_TIMER_VECTOR_PRI 0x00020 |
| #define MPIC_TIMER_DESTINATION 0x00030 |
| |
| /* |
| * Per-Processor registers |
| */ |
| |
| #define MPIC_CPU_THISBASE 0x00000 |
| #define MPIC_CPU_BASE 0x20000 |
| #define MPIC_CPU_STRIDE 0x01000 |
| |
| #define MPIC_CPU_IPI_DISPATCH_0 0x00040 |
| #define MPIC_CPU_IPI_DISPATCH_1 0x00050 |
| #define MPIC_CPU_IPI_DISPATCH_2 0x00060 |
| #define MPIC_CPU_IPI_DISPATCH_3 0x00070 |
| #define MPIC_CPU_IPI_DISPATCH_STRIDE 0x00010 |
| #define MPIC_CPU_CURRENT_TASK_PRI 0x00080 |
| #define MPIC_CPU_TASKPRI_MASK 0x0000000f |
| #define MPIC_CPU_WHOAMI 0x00090 |
| #define MPIC_CPU_WHOAMI_MASK 0x0000001f |
| #define MPIC_CPU_INTACK 0x000a0 |
| #define MPIC_CPU_EOI 0x000b0 |
| #define MPIC_CPU_MCACK 0x000c0 |
| |
| /* |
| * Per-source registers |
| */ |
| |
| #define MPIC_IRQ_BASE 0x10000 |
| #define MPIC_IRQ_STRIDE 0x00020 |
| #define MPIC_IRQ_VECTOR_PRI 0x00000 |
| #define MPIC_VECPRI_MASK 0x80000000 |
| #define MPIC_VECPRI_ACTIVITY 0x40000000 /* Read Only */ |
| #define MPIC_VECPRI_PRIORITY_MASK 0x000f0000 |
| #define MPIC_VECPRI_PRIORITY_SHIFT 16 |
| #define MPIC_VECPRI_VECTOR_MASK 0x000007ff |
| #define MPIC_VECPRI_POLARITY_POSITIVE 0x00800000 |
| #define MPIC_VECPRI_POLARITY_NEGATIVE 0x00000000 |
| #define MPIC_VECPRI_POLARITY_MASK 0x00800000 |
| #define MPIC_VECPRI_SENSE_LEVEL 0x00400000 |
| #define MPIC_VECPRI_SENSE_EDGE 0x00000000 |
| #define MPIC_VECPRI_SENSE_MASK 0x00400000 |
| #define MPIC_IRQ_DESTINATION 0x00010 |
| |
| #define MPIC_MAX_IRQ_SOURCES 2048 |
| #define MPIC_MAX_CPUS 32 |
| #define MPIC_MAX_ISU 32 |
| |
| /* |
| * Tsi108 implementation of MPIC has many differences from the original one |
| */ |
| |
| /* |
| * Global registers |
| */ |
| |
| #define TSI108_GREG_BASE 0x00000 |
| #define TSI108_GREG_FEATURE_0 0x00000 |
| #define TSI108_GREG_GLOBAL_CONF_0 0x00004 |
| #define TSI108_GREG_VENDOR_ID 0x0000c |
| #define TSI108_GREG_IPI_VECTOR_PRI_0 0x00204 /* Doorbell 0 */ |
| #define TSI108_GREG_IPI_STRIDE 0x0c |
| #define TSI108_GREG_SPURIOUS 0x00010 |
| #define TSI108_GREG_TIMER_FREQ 0x00014 |
| |
| /* |
| * Timer registers |
| */ |
| #define TSI108_TIMER_BASE 0x0030 |
| #define TSI108_TIMER_STRIDE 0x10 |
| #define TSI108_TIMER_CURRENT_CNT 0x00000 |
| #define TSI108_TIMER_BASE_CNT 0x00004 |
| #define TSI108_TIMER_VECTOR_PRI 0x00008 |
| #define TSI108_TIMER_DESTINATION 0x0000c |
| |
| /* |
| * Per-Processor registers |
| */ |
| #define TSI108_CPU_BASE 0x00300 |
| #define TSI108_CPU_STRIDE 0x00040 |
| #define TSI108_CPU_IPI_DISPATCH_0 0x00200 |
| #define TSI108_CPU_IPI_DISPATCH_STRIDE 0x00000 |
| #define TSI108_CPU_CURRENT_TASK_PRI 0x00000 |
| #define TSI108_CPU_WHOAMI 0xffffffff |
| #define TSI108_CPU_INTACK 0x00004 |
| #define TSI108_CPU_EOI 0x00008 |
| #define TSI108_CPU_MCACK 0x00004 /* Doesn't really exist here */ |
| |
| /* |
| * Per-source registers |
| */ |
| #define TSI108_IRQ_BASE 0x00100 |
| #define TSI108_IRQ_STRIDE 0x00008 |
| #define TSI108_IRQ_VECTOR_PRI 0x00000 |
| #define TSI108_VECPRI_VECTOR_MASK 0x000000ff |
| #define TSI108_VECPRI_POLARITY_POSITIVE 0x01000000 |
| #define TSI108_VECPRI_POLARITY_NEGATIVE 0x00000000 |
| #define TSI108_VECPRI_SENSE_LEVEL 0x02000000 |
| #define TSI108_VECPRI_SENSE_EDGE 0x00000000 |
| #define TSI108_VECPRI_POLARITY_MASK 0x01000000 |
| #define TSI108_VECPRI_SENSE_MASK 0x02000000 |
| #define TSI108_IRQ_DESTINATION 0x00004 |
| |
| /* weird mpic register indices and mask bits in the HW info array */ |
| enum { |
| MPIC_IDX_GREG_BASE = 0, |
| MPIC_IDX_GREG_FEATURE_0, |
| MPIC_IDX_GREG_GLOBAL_CONF_0, |
| MPIC_IDX_GREG_VENDOR_ID, |
| MPIC_IDX_GREG_IPI_VECTOR_PRI_0, |
| MPIC_IDX_GREG_IPI_STRIDE, |
| MPIC_IDX_GREG_SPURIOUS, |
| MPIC_IDX_GREG_TIMER_FREQ, |
| |
| MPIC_IDX_TIMER_BASE, |
| MPIC_IDX_TIMER_STRIDE, |
| MPIC_IDX_TIMER_CURRENT_CNT, |
| MPIC_IDX_TIMER_BASE_CNT, |
| MPIC_IDX_TIMER_VECTOR_PRI, |
| MPIC_IDX_TIMER_DESTINATION, |
| |
| MPIC_IDX_CPU_BASE, |
| MPIC_IDX_CPU_STRIDE, |
| MPIC_IDX_CPU_IPI_DISPATCH_0, |
| MPIC_IDX_CPU_IPI_DISPATCH_STRIDE, |
| MPIC_IDX_CPU_CURRENT_TASK_PRI, |
| MPIC_IDX_CPU_WHOAMI, |
| MPIC_IDX_CPU_INTACK, |
| MPIC_IDX_CPU_EOI, |
| MPIC_IDX_CPU_MCACK, |
| |
| MPIC_IDX_IRQ_BASE, |
| MPIC_IDX_IRQ_STRIDE, |
| MPIC_IDX_IRQ_VECTOR_PRI, |
| |
| MPIC_IDX_VECPRI_VECTOR_MASK, |
| MPIC_IDX_VECPRI_POLARITY_POSITIVE, |
| MPIC_IDX_VECPRI_POLARITY_NEGATIVE, |
| MPIC_IDX_VECPRI_SENSE_LEVEL, |
| MPIC_IDX_VECPRI_SENSE_EDGE, |
| MPIC_IDX_VECPRI_POLARITY_MASK, |
| MPIC_IDX_VECPRI_SENSE_MASK, |
| MPIC_IDX_IRQ_DESTINATION, |
| MPIC_IDX_END |
| }; |
| |
| |
| #ifdef CONFIG_MPIC_U3_HT_IRQS |
| /* Fixup table entry */ |
| struct mpic_irq_fixup |
| { |
| u8 __iomem *base; |
| u8 __iomem *applebase; |
| u32 data; |
| unsigned int index; |
| }; |
| #endif /* CONFIG_MPIC_U3_HT_IRQS */ |
| |
| |
| enum mpic_reg_type { |
| mpic_access_mmio_le, |
| mpic_access_mmio_be, |
| #ifdef CONFIG_PPC_DCR |
| mpic_access_dcr |
| #endif |
| }; |
| |
| struct mpic_reg_bank { |
| u32 __iomem *base; |
| #ifdef CONFIG_PPC_DCR |
| dcr_host_t dhost; |
| #endif /* CONFIG_PPC_DCR */ |
| }; |
| |
| struct mpic_irq_save { |
| u32 vecprio, |
| dest; |
| #ifdef CONFIG_MPIC_U3_HT_IRQS |
| u32 fixup_data; |
| #endif |
| }; |
| |
| /* The instance data of a given MPIC */ |
| struct mpic |
| { |
| /* The remapper for this MPIC */ |
| struct irq_host *irqhost; |
| |
| /* The "linux" controller struct */ |
| struct irq_chip hc_irq; |
| #ifdef CONFIG_MPIC_U3_HT_IRQS |
| struct irq_chip hc_ht_irq; |
| #endif |
| #ifdef CONFIG_SMP |
| struct irq_chip hc_ipi; |
| #endif |
| const char *name; |
| /* Flags */ |
| unsigned int flags; |
| /* How many irq sources in a given ISU */ |
| unsigned int isu_size; |
| unsigned int isu_shift; |
| unsigned int isu_mask; |
| unsigned int irq_count; |
| /* Number of sources */ |
| unsigned int num_sources; |
| /* Number of CPUs */ |
| unsigned int num_cpus; |
| /* default senses array */ |
| unsigned char *senses; |
| unsigned int senses_count; |
| |
| /* vector numbers used for internal sources (ipi/timers) */ |
| unsigned int ipi_vecs[4]; |
| unsigned int timer_vecs[4]; |
| |
| /* Spurious vector to program into unused sources */ |
| unsigned int spurious_vec; |
| |
| #ifdef CONFIG_MPIC_U3_HT_IRQS |
| /* The fixup table */ |
| struct mpic_irq_fixup *fixups; |
| raw_spinlock_t fixup_lock; |
| #endif |
| |
| /* Register access method */ |
| enum mpic_reg_type reg_type; |
| |
| /* The various ioremap'ed bases */ |
| struct mpic_reg_bank gregs; |
| struct mpic_reg_bank tmregs; |
| struct mpic_reg_bank cpuregs[MPIC_MAX_CPUS]; |
| struct mpic_reg_bank isus[MPIC_MAX_ISU]; |
| |
| /* Protected sources */ |
| unsigned long *protected; |
| |
| #ifdef CONFIG_MPIC_WEIRD |
| /* Pointer to HW info array */ |
| u32 *hw_set; |
| #endif |
| |
| #ifdef CONFIG_PCI_MSI |
| struct msi_bitmap msi_bitmap; |
| #endif |
| |
| #ifdef CONFIG_MPIC_BROKEN_REGREAD |
| u32 isu_reg0_shadow[MPIC_MAX_IRQ_SOURCES]; |
| #endif |
| |
| /* link */ |
| struct mpic *next; |
| |
| #ifdef CONFIG_PM |
| struct mpic_irq_save *save_data; |
| #endif |
| }; |
| |
| /* |
| * MPIC flags (passed to mpic_alloc) |
| * |
| * The top 4 bits contain an MPIC bhw id that is used to index the |
| * register offsets and some masks when CONFIG_MPIC_WEIRD is set. |
| * Note setting any ID (leaving those bits to 0) means standard MPIC |
| */ |
| |
| /* This is the primary controller, only that one has IPIs and |
| * has afinity control. A non-primary MPIC always uses CPU0 |
| * registers only |
| */ |
| #define MPIC_PRIMARY 0x00000001 |
| |
| /* Set this for a big-endian MPIC */ |
| #define MPIC_BIG_ENDIAN 0x00000002 |
| /* Broken U3 MPIC */ |
| #define MPIC_U3_HT_IRQS 0x00000004 |
| /* Broken IPI registers (autodetected) */ |
| #define MPIC_BROKEN_IPI 0x00000008 |
| /* MPIC wants a reset */ |
| #define MPIC_WANTS_RESET 0x00000010 |
| /* Spurious vector requires EOI */ |
| #define MPIC_SPV_EOI 0x00000020 |
| /* No passthrough disable */ |
| #define MPIC_NO_PTHROU_DIS 0x00000040 |
| /* DCR based MPIC */ |
| #define MPIC_USES_DCR 0x00000080 |
| /* MPIC has 11-bit vector fields (or larger) */ |
| #define MPIC_LARGE_VECTORS 0x00000100 |
| /* Enable delivery of prio 15 interrupts as MCK instead of EE */ |
| #define MPIC_ENABLE_MCK 0x00000200 |
| /* Disable bias among target selection, spread interrupts evenly */ |
| #define MPIC_NO_BIAS 0x00000400 |
| /* Ignore NIRQS as reported by FRR */ |
| #define MPIC_BROKEN_FRR_NIRQS 0x00000800 |
| /* Destination only supports a single CPU at a time */ |
| #define MPIC_SINGLE_DEST_CPU 0x00001000 |
| /* Enable CoreInt delivery of interrupts */ |
| #define MPIC_ENABLE_COREINT 0x00002000 |
| /* Disable resetting of the MPIC. |
| * NOTE: This flag trumps MPIC_WANTS_RESET. |
| */ |
| #define MPIC_NO_RESET 0x00004000 |
| |
| /* MPIC HW modification ID */ |
| #define MPIC_REGSET_MASK 0xf0000000 |
| #define MPIC_REGSET(val) (((val) & 0xf ) << 28) |
| #define MPIC_GET_REGSET(flags) (((flags) >> 28) & 0xf) |
| |
| #define MPIC_REGSET_STANDARD MPIC_REGSET(0) /* Original MPIC */ |
| #define MPIC_REGSET_TSI108 MPIC_REGSET(1) /* Tsi108/109 PIC */ |
| |
| /* Allocate the controller structure and setup the linux irq descs |
| * for the range if interrupts passed in. No HW initialization is |
| * actually performed. |
| * |
| * @phys_addr: physial base address of the MPIC |
| * @flags: flags, see constants above |
| * @isu_size: number of interrupts in an ISU. Use 0 to use a |
| * standard ISU-less setup (aka powermac) |
| * @irq_offset: first irq number to assign to this mpic |
| * @irq_count: number of irqs to use with this mpic IRQ sources. Pass 0 |
| * to match the number of sources |
| * @ipi_offset: first irq number to assign to this mpic IPI sources, |
| * used only on primary mpic |
| * @senses: array of sense values |
| * @senses_num: number of entries in the array |
| * |
| * Note about the sense array. If none is passed, all interrupts are |
| * setup to be level negative unless MPIC_U3_HT_IRQS is set in which |
| * case they are edge positive (and the array is ignored anyway). |
| * The values in the array start at the first source of the MPIC, |
| * that is senses[0] correspond to linux irq "irq_offset". |
| */ |
| extern struct mpic *mpic_alloc(struct device_node *node, |
| phys_addr_t phys_addr, |
| unsigned int flags, |
| unsigned int isu_size, |
| unsigned int irq_count, |
| const char *name); |
| |
| /* Assign ISUs, to call before mpic_init() |
| * |
| * @mpic: controller structure as returned by mpic_alloc() |
| * @isu_num: ISU number |
| * @phys_addr: physical address of the ISU |
| */ |
| extern void mpic_assign_isu(struct mpic *mpic, unsigned int isu_num, |
| phys_addr_t phys_addr); |
| |
| /* Set default sense codes |
| * |
| * @mpic: controller |
| * @senses: array of sense codes |
| * @count: size of above array |
| * |
| * Optionally provide an array (indexed on hardware interrupt numbers |
| * for this MPIC) of default sense codes for the chip. Those are linux |
| * sense codes IRQ_TYPE_* |
| * |
| * The driver gets ownership of the pointer, don't dispose of it or |
| * anything like that. __init only. |
| */ |
| extern void mpic_set_default_senses(struct mpic *mpic, u8 *senses, int count); |
| |
| |
| /* Initialize the controller. After this has been called, none of the above |
| * should be called again for this mpic |
| */ |
| extern void mpic_init(struct mpic *mpic); |
| |
| /* |
| * All of the following functions must only be used after the |
| * ISUs have been assigned and the controller fully initialized |
| * with mpic_init() |
| */ |
| |
| |
| /* Change the priority of an interrupt. Default is 8 for irqs and |
| * 10 for IPIs. You can call this on both IPIs and IRQ numbers, but the |
| * IPI number is then the offset'ed (linux irq number mapped to the IPI) |
| */ |
| extern void mpic_irq_set_priority(unsigned int irq, unsigned int pri); |
| |
| /* Setup a non-boot CPU */ |
| extern void mpic_setup_this_cpu(void); |
| |
| /* Clean up for kexec (or cpu offline or ...) */ |
| extern void mpic_teardown_this_cpu(int secondary); |
| |
| /* Get the current cpu priority for this cpu (0..15) */ |
| extern int mpic_cpu_get_priority(void); |
| |
| /* Set the current cpu priority for this cpu */ |
| extern void mpic_cpu_set_priority(int prio); |
| |
| /* Request IPIs on primary mpic */ |
| extern void mpic_request_ipis(void); |
| |
| /* Send a message (IPI) to a given target (cpu number or MSG_*) */ |
| void smp_mpic_message_pass(int target, int msg); |
| |
| /* Unmask a specific virq */ |
| extern void mpic_unmask_irq(struct irq_data *d); |
| /* Mask a specific virq */ |
| extern void mpic_mask_irq(struct irq_data *d); |
| /* EOI a specific virq */ |
| extern void mpic_end_irq(struct irq_data *d); |
| |
| /* Fetch interrupt from a given mpic */ |
| extern unsigned int mpic_get_one_irq(struct mpic *mpic); |
| /* This one gets from the primary mpic */ |
| extern unsigned int mpic_get_irq(void); |
| /* This one gets from the primary mpic via CoreInt*/ |
| extern unsigned int mpic_get_coreint_irq(void); |
| /* Fetch Machine Check interrupt from primary mpic */ |
| extern unsigned int mpic_get_mcirq(void); |
| |
| /* Set the EPIC clock ratio */ |
| void mpic_set_clk_ratio(struct mpic *mpic, u32 clock_ratio); |
| |
| /* Enable/Disable EPIC serial interrupt mode */ |
| void mpic_set_serial_int(struct mpic *mpic, int enable); |
| |
| #endif /* __KERNEL__ */ |
| #endif /* _ASM_POWERPC_MPIC_H */ |
