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lib: utils/irqchip: Initialize all matching irqchip DT nodes

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We can have multiple matching DT nodes of the same FDT irqchip
driver so in this case we should call cold_init() for all matching
DT nodes instead of just first matching DT node.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2020-05-12 14:59:59 +05:30
committed by Anup Patel
parent 2c685c214f
commit d30bb68448
2 changed files with 40 additions and 22 deletions
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10
lib/utils/irqchip/fdt_irqchip.c
View File

@@ -42,16 +42,18 @@ static int fdt_irqchip_cold_init(void)
for (pos = 0; pos < array_size(irqchip_drivers); pos++) {
drv = irqchip_drivers[pos];
noff = fdt_find_match(fdt, -1, drv->match_table, &match);
if (noff < 0)
continue;
noff = -1;
while ((noff = fdt_find_match(fdt, noff,
drv->match_table, &match)) >= 0) {
if (drv->cold_init) {
rc = drv->cold_init(fdt, noff, match);
if (rc)
return rc;
}
current_driver = drv;
}
if (current_driver)
break;
}

40
lib/utils/irqchip/fdt_irqchip_plic.c
View File

@@ -15,28 +15,30 @@
#include <sbi_utils/irqchip/fdt_irqchip.h>
#include <sbi_utils/irqchip/plic.h>
static struct plic_data plic;
#define PLIC_MAX_NR 16
static unsigned long plic_count = 0;
static struct plic_data plic[PLIC_MAX_NR];
static struct plic_data *plic_hartid2data[SBI_HARTMASK_MAX_BITS];
static int plic_hartid2context[SBI_HARTMASK_MAX_BITS][2];
static int irqchip_plic_warm_init(void)
{
u32 hartid = current_hartid();
return plic_warm_irqchip_init(&plic, plic_hartid2context[hartid][0],
return plic_warm_irqchip_init(plic_hartid2data[hartid],
plic_hartid2context[hartid][0],
plic_hartid2context[hartid][1]);
}
static int irqchip_plic_parse_hartid2context(void *fdt, int nodeoff)
static int irqchip_plic_update_hartid_table(void *fdt, int nodeoff,
struct plic_data *pd)
{
const fdt32_t *val;
u32 phandle, hwirq, hartid;
int i, err, count, cpu_offset, cpu_intc_offset;
for (i = 0; i < SBI_HARTMASK_MAX_BITS; i++) {
plic_hartid2context[i][0] = -1;
plic_hartid2context[i][1] = -1;
}
val = fdt_getprop(fdt, nodeoff, "interrupts-extended", &count);
if (!val || count < sizeof(fdt32_t))
return SBI_EINVAL;
@@ -61,6 +63,7 @@ static int irqchip_plic_parse_hartid2context(void *fdt, int nodeoff)
if (SBI_HARTMASK_MAX_BITS <= hartid)
continue;
plic_hartid2data[hartid] = pd;
switch (hwirq) {
case IRQ_M_EXT:
plic_hartid2context[hartid][0] = i / 2;
@@ -77,17 +80,30 @@ static int irqchip_plic_parse_hartid2context(void *fdt, int nodeoff)
static int irqchip_plic_cold_init(void *fdt, int nodeoff,
const struct fdt_match *match)
{
int rc;
int i, rc;
struct plic_data *pd;
rc = fdt_parse_plic_node(fdt, nodeoff, &plic);
if (PLIC_MAX_NR <= plic_count)
return SBI_ENOSPC;
pd = &plic[plic_count++];
rc = fdt_parse_plic_node(fdt, nodeoff, pd);
if (rc)
return rc;
rc = plic_cold_irqchip_init(&plic);
rc = plic_cold_irqchip_init(pd);
if (rc)
return rc;
return irqchip_plic_parse_hartid2context(fdt, nodeoff);
if (plic_count == 1) {
for (i = 0; i < SBI_HARTMASK_MAX_BITS; i++) {
plic_hartid2data[i] = NULL;
plic_hartid2context[i][0] = -1;
plic_hartid2context[i][1] = -1;
}
}
return irqchip_plic_update_hartid_table(fdt, nodeoff, pd);
}
static const struct fdt_match irqchip_plic_match[] = {