diff options
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/intc/arm_gicv3_common.h | 54 |
1 files changed, 14 insertions, 40 deletions
diff --git a/include/hw/intc/arm_gicv3_common.h b/include/hw/intc/arm_gicv3_common.h index cd09bee3bc..a3d6a0e507 100644 --- a/include/hw/intc/arm_gicv3_common.h +++ b/include/hw/intc/arm_gicv3_common.h @@ -51,13 +51,13 @@ /* Maximum number of list registers (architectural limit) */ #define GICV3_LR_MAX 16 -/* For some distributor fields we want to model the array of 32-bit +/* + * For some distributor fields we want to model the array of 32-bit * register values which hold various bitmaps corresponding to enabled, - * pending, etc bits. These macros and functions facilitate that; the - * APIs are generally modelled on the generic bitmap.h functions - * (which are unsuitable here because they use 'unsigned long' as the - * underlying storage type, which is very awkward when you need to - * access the data as 32-bit values.) + * pending, etc bits. We use the set_bit32() etc family of functions + * from bitops.h for this. For a few cases we need to implement some + * extra operations. + * * Each bitmap contains a bit for each interrupt. Although there is * space for the PPIs and SGIs, those bits (the first 32) are never * used as that state lives in the redistributor. The unused bits are @@ -65,39 +65,13 @@ * avoids bugs where we forget to subtract GIC_INTERNAL from an * interrupt number. */ -#define GICV3_BMP_SIZE DIV_ROUND_UP(GICV3_MAXIRQ, 32) - -#define GIC_DECLARE_BITMAP(name) \ - uint32_t name[GICV3_BMP_SIZE] - -#define GIC_BIT_MASK(nr) (1U << ((nr) % 32)) -#define GIC_BIT_WORD(nr) ((nr) / 32) - -static inline void gic_bmp_set_bit(int nr, uint32_t *addr) -{ - uint32_t mask = GIC_BIT_MASK(nr); - uint32_t *p = addr + GIC_BIT_WORD(nr); - - *p |= mask; -} - -static inline void gic_bmp_clear_bit(int nr, uint32_t *addr) -{ - uint32_t mask = GIC_BIT_MASK(nr); - uint32_t *p = addr + GIC_BIT_WORD(nr); - - *p &= ~mask; -} - -static inline int gic_bmp_test_bit(int nr, const uint32_t *addr) -{ - return 1U & (addr[GIC_BIT_WORD(nr)] >> (nr & 31)); -} +#define GIC_DECLARE_BITMAP(name) DECLARE_BITMAP32(name, GICV3_MAXIRQ) +#define GICV3_BMP_SIZE BITS_TO_U32S(GICV3_MAXIRQ) static inline void gic_bmp_replace_bit(int nr, uint32_t *addr, int val) { - uint32_t mask = GIC_BIT_MASK(nr); - uint32_t *p = addr + GIC_BIT_WORD(nr); + uint32_t mask = BIT32_MASK(nr); + uint32_t *p = addr + BIT32_WORD(nr); *p &= ~mask; *p |= (val & 1U) << (nr % 32); @@ -106,7 +80,7 @@ static inline void gic_bmp_replace_bit(int nr, uint32_t *addr, int val) /* Return a pointer to the 32-bit word containing the specified bit. */ static inline uint32_t *gic_bmp_ptr32(uint32_t *addr, int nr) { - return addr + GIC_BIT_WORD(nr); + return addr + BIT32_WORD(nr); } typedef struct GICv3State GICv3State; @@ -301,15 +275,15 @@ struct GICv3State { #define GICV3_BITMAP_ACCESSORS(BMP) \ static inline void gicv3_gicd_##BMP##_set(GICv3State *s, int irq) \ { \ - gic_bmp_set_bit(irq, s->BMP); \ + set_bit32(irq, s->BMP); \ } \ static inline int gicv3_gicd_##BMP##_test(GICv3State *s, int irq) \ { \ - return gic_bmp_test_bit(irq, s->BMP); \ + return test_bit32(irq, s->BMP); \ } \ static inline void gicv3_gicd_##BMP##_clear(GICv3State *s, int irq) \ { \ - gic_bmp_clear_bit(irq, s->BMP); \ + clear_bit32(irq, s->BMP); \ } \ static inline void gicv3_gicd_##BMP##_replace(GICv3State *s, \ int irq, int value) \ |