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lib: irqchip/plic: Constify plic_data pointers 

None of the functions modify the passed-in plic_data, so mark it const.

Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
This commit is contained in:
Samuel Holland 2022-06-12 20:03:49 -05:00 committed by Anup Patel
parent 79e42eb2d6
commit 2ea7799d56
2 changed files with 11 additions and 9 deletions
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9
include/sbi_utils/irqchip/plic.h
View File

@ -17,13 +17,14 @@ struct plic_data {
unsigned long num_src; unsigned long num_src;
}; };
int plic_warm_irqchip_init(struct plic_data *plic, int plic_warm_irqchip_init(const struct plic_data *plic,
int m_cntx_id, int s_cntx_id); int m_cntx_id, int s_cntx_id);
int plic_cold_irqchip_init(struct plic_data *plic); int plic_cold_irqchip_init(const struct plic_data *plic);
void plic_set_thresh(struct plic_data *plic, u32 cntxid, u32 val); void plic_set_thresh(const struct plic_data *plic, u32 cntxid, u32 val);
void plic_set_ie(struct plic_data *plic, u32 cntxid, u32 word_index, u32 val); void plic_set_ie(const struct plic_data *plic, u32 cntxid,
u32 word_index, u32 val);
#endif #endif

11
lib/utils/irqchip/plic.c
View File

@ -21,14 +21,14 @@
#define PLIC_CONTEXT_BASE 0x200000 #define PLIC_CONTEXT_BASE 0x200000
#define PLIC_CONTEXT_STRIDE 0x1000 #define PLIC_CONTEXT_STRIDE 0x1000
static void plic_set_priority(struct plic_data *plic, u32 source, u32 val) static void plic_set_priority(const struct plic_data *plic, u32 source, u32 val)
{ {
volatile void *plic_priority = (char *)plic->addr + volatile void *plic_priority = (char *)plic->addr +
PLIC_PRIORITY_BASE + 4 * source; PLIC_PRIORITY_BASE + 4 * source;
writel(val, plic_priority); writel(val, plic_priority);
} }
void plic_set_thresh(struct plic_data *plic, u32 cntxid, u32 val) void plic_set_thresh(const struct plic_data *plic, u32 cntxid, u32 val)
{ {
volatile void *plic_thresh; volatile void *plic_thresh;
@ -40,7 +40,8 @@ void plic_set_thresh(struct plic_data *plic, u32 cntxid, u32 val)
writel(val, plic_thresh); writel(val, plic_thresh);
} }
void plic_set_ie(struct plic_data *plic, u32 cntxid, u32 word_index, u32 val) void plic_set_ie(const struct plic_data *plic, u32 cntxid,
u32 word_index, u32 val)
{ {
volatile char *plic_ie; volatile char *plic_ie;
@ -52,7 +53,7 @@ void plic_set_ie(struct plic_data *plic, u32 cntxid, u32 word_index, u32 val)
writel(val, plic_ie + word_index * 4); writel(val, plic_ie + word_index * 4);
} }
int plic_warm_irqchip_init(struct plic_data *plic, int plic_warm_irqchip_init(const struct plic_data *plic,
int m_cntx_id, int s_cntx_id) int m_cntx_id, int s_cntx_id)
{ {
size_t i, ie_words; size_t i, ie_words;
@ -85,7 +86,7 @@ int plic_warm_irqchip_init(struct plic_data *plic,
return 0; return 0;
} }
int plic_cold_irqchip_init(struct plic_data *plic) int plic_cold_irqchip_init(const struct plic_data *plic)
{ {
int i; int i;