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platform: generic: mips p8700: dump MMIO regions

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Debug print MMIO regions

Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev@mobileye.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260223-for-upstream-eyeq7h-v3-20-621d004d1a21@mobileye.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Vladimir Kondratiev
2026-02-23 16:54:59 +02:00
committed by Anup Patel
parent 9169290ca9
commit 3b55e5c722
3 changed files with 65 additions and 0 deletions
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1
platform/generic/include/mips/p8700.h
View File

@@ -188,6 +188,7 @@ extern const struct p8700_cm_info *p8700_cm_info;
#define CPC_Cx_STAT_CONF_SEQ_STATE_U6 7
extern const struct p8700_cm_info *p8700_cm_info;
void mips_p8700_dump_mmio(void);
void mips_p8700_pmp_set(unsigned int n, unsigned long flags,
unsigned long prot, unsigned long addr,
unsigned long log2len);

1
platform/generic/mips/eyeq7h.c
View File

@@ -376,6 +376,7 @@ static int eyeq7h_nascent_init(void)
*/
__raw_writeq(NCORE-1, (void *)(cm_base + GCR_MMIO_TOP(1)));
mb();
mips_p8700_dump_mmio();
}
/* Per core set up */

63
platform/generic/mips/p8700.c
View File

@@ -16,6 +16,69 @@
const struct p8700_cm_info *p8700_cm_info;
void mips_p8700_dump_mmio(void)
{
struct sbi_scratch *scratch = sbi_scratch_thishart_ptr();
unsigned hartid = current_hartid();
unsigned cl = cpu_cluster(hartid);
unsigned long cm_base = p8700_cm_info->gcr_base[cl];
u64 gcr_config = readq((void*)cm_base + GCR_GLOBAL_CONFIG);
int num_mmios = EXTRACT_FIELD(gcr_config, GCR_GC_NUM_MMIOS);
static const char *ports[16] = {
[0] = "MEM",
[1] = "? 1",
[2] = "? 2",
[3] = "? 3",
[4] = "? 4",
[5] = "? 5",
[6] = "? 6",
[7] = "? 7",
[8] = "AUX0",
[9] = "AUX1",
[10] = "AUX2",
[11] = "AUX3",
[12] = "? 12",
[13] = "? 13",
[14] = "? 14",
[15] = "? 15",
};
static const char *ccas[4] = {
[0] = "ANY",
[1] = "UC",
[2] = "UCA",
[3] = "UC|UCA",
};
static const char *ncs[2] = {
[0] = " ",
[1] = "NC",
};
static const char *dis_rqs[2] = {
[0] = " ",
[1] = "DIS_RQ_LIM",
};
if (!(scratch->options & SBI_SCRATCH_DEBUG_PRINTS))
return;
sbi_printf("Cluster %d: %d MMIO regions\n", cl, num_mmios);
for (int i = 0; i < num_mmios; i++) {
u64 b = readq((void*)cm_base + GCR_MMIO_BOTTOM(i));
u64 t = readq((void*)cm_base + GCR_MMIO_TOP(i));
if (b & GCR_MMIO_BOTTOM_EN) {
ulong ta = EXTRACT_FIELD(t, GCR_MMIO_ADDR) << 16;
ulong ba = EXTRACT_FIELD(b, GCR_MMIO_ADDR) << 16;
int cca = EXTRACT_FIELD(b, GCR_MMIO_BOTTOM_CCA);
int nc = EXTRACT_FIELD(b, GCR_MMIO_BOTTOM_FORCE_NC);
int port = EXTRACT_FIELD(b, GCR_MMIO_BOTTOM_PORT);
int dis_rq_lim = EXTRACT_FIELD(b, GCR_MMIO_BOTTOM_DIS_RQ_LIM);
sbi_printf(" [%d] : 0x%016lx-0x%016lx %4s %6s %s %s\n", i,
ba, ta, ports[port], ccas[cca], ncs[nc], dis_rqs[dis_rq_lim]);
} else {
sbi_printf(" [%d] : --disabled--\n", i);
}
}
}
void mips_p8700_pmp_set(unsigned int n, unsigned long flags,
unsigned long prot, unsigned long addr,
unsigned long log2len)