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Commit bfcdc8ff authored by Michael Neuling's avatar Michael Neuling Committed by Michael Ellerman
Browse files

cxl: Dump debug info on the AFU configuration record 



Now that we parse the AFU Configuration record, dump some info on it when in
debug mode.

Signed-off-by: default avatarMichael Neuling <mikey@neuling.org>
Acked-by: default avatarIan Munsie <imunsie@au1.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 7f436b53

drivers/misc/cxl/pci.c

+11 −1
Original line number Original line Diff line number Diff line
@@ -90,6 +90,7 @@ 
/* This works a little different than the p1/p2 register accesses to make it

/* This works a little different than the p1/p2 register accesses to make it

 * easier to pull out individual fields */

 * easier to pull out individual fields */

#define AFUD_READ(afu, off)		in_be64(afu->afu_desc_mmio + off)

#define AFUD_READ(afu, off)		in_be64(afu->afu_desc_mmio + off)

#define AFUD_READ_LE(afu, off)		in_le64(afu->afu_desc_mmio + off)

#define EXTRACT_PPC_BIT(val, bit)	(!!(val & PPC_BIT(bit)))

#define EXTRACT_PPC_BIT(val, bit)	(!!(val & PPC_BIT(bit)))

#define EXTRACT_PPC_BITS(val, bs, be)	((val & PPC_BITMASK(bs, be)) >> PPC_BITLSHIFT(be))

#define EXTRACT_PPC_BITS(val, bs, be)	((val & PPC_BITMASK(bs, be)) >> PPC_BITLSHIFT(be))
@@ -286,7 +287,8 @@ static void dump_cxl_config_space(struct pci_dev *dev) 




static void dump_afu_descriptor(struct cxl_afu *afu)

static void dump_afu_descriptor(struct cxl_afu *afu)

{

{

	u64 val;

	u64 val, afu_cr_num, afu_cr_off, afu_cr_len;

	int i;





#define show_reg(name, what) \

#define show_reg(name, what) \

	dev_info(&afu->dev, "afu desc: %30s: %#llx\n", name, what)

	dev_info(&afu->dev, "afu desc: %30s: %#llx\n", name, what)
@@ -296,6 +298,7 @@ static void dump_afu_descriptor(struct cxl_afu *afu) 
	show_reg("num_of_processes", AFUD_NUM_PROCS(val));

	show_reg("num_of_processes", AFUD_NUM_PROCS(val));

	show_reg("num_of_afu_CRs", AFUD_NUM_CRS(val));

	show_reg("num_of_afu_CRs", AFUD_NUM_CRS(val));

	show_reg("req_prog_mode", val & 0xffffULL);

	show_reg("req_prog_mode", val & 0xffffULL);

	afu_cr_num = AFUD_NUM_CRS(val);





	val = AFUD_READ(afu, 0x8);

	val = AFUD_READ(afu, 0x8);

	show_reg("Reserved", val);

	show_reg("Reserved", val);
@@ -307,8 +310,10 @@ static void dump_afu_descriptor(struct cxl_afu *afu) 
	val = AFUD_READ_CR(afu);

	val = AFUD_READ_CR(afu);

	show_reg("Reserved", (val >> (63-7)) & 0xff);

	show_reg("Reserved", (val >> (63-7)) & 0xff);

	show_reg("AFU_CR_len", AFUD_CR_LEN(val));

	show_reg("AFU_CR_len", AFUD_CR_LEN(val));

	afu_cr_len = AFUD_CR_LEN(val) * 256;





	val = AFUD_READ_CR_OFF(afu);

	val = AFUD_READ_CR_OFF(afu);

	afu_cr_off = val;

	show_reg("AFU_CR_offset", val);

	show_reg("AFU_CR_offset", val);





	val = AFUD_READ_PPPSA(afu);

	val = AFUD_READ_PPPSA(afu);
@@ -325,6 +330,11 @@ static void dump_afu_descriptor(struct cxl_afu *afu) 
	val = AFUD_READ_EB_OFF(afu);

	val = AFUD_READ_EB_OFF(afu);

	show_reg("AFU_EB_offset", val);

	show_reg("AFU_EB_offset", val);





	for (i = 0; i < afu_cr_num; i++) {

		val = AFUD_READ_LE(afu, afu_cr_off + i * afu_cr_len);

		show_reg("CR Vendor", val & 0xffff);

		show_reg("CR Device", (val >> 16) & 0xffff);

	}

#undef show_reg

#undef show_reg

}

}