iwlwifi: pcie: support dumping FH in a000 hw

FH in A000 HW are placed in a different location,
and need to be read as prph, rather than direct.
Support A000 dumping as well as legacy.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/iwl-fh.h

@@ -77,6 +77,8 @@
  */
 #define FH_MEM_LOWER_BOUND                   (0x1000)
 #define FH_MEM_UPPER_BOUND                   (0x2000)
+#define FH_MEM_LOWER_BOUND_GEN2              (0xa06000)
+#define FH_MEM_UPPER_BOUND_GEN2              (0xa08000)
 
 /**
  * Keep-Warm (KW) buffer base address.

drivers/net/wireless/intel/iwlwifi/pcie/trans.c

@@ -2575,8 +2575,15 @@ static u32 iwl_trans_pcie_fh_regs_dump(struct iwl_trans *trans,
 	(*data)->len = cpu_to_le32(fh_regs_len);
 	val = (void *)(*data)->data;
 
-	for (i = FH_MEM_LOWER_BOUND; i < FH_MEM_UPPER_BOUND; i += sizeof(u32))
-		*val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i));
+	if (!trans->cfg->gen2)
+		for (i = FH_MEM_LOWER_BOUND; i < FH_MEM_UPPER_BOUND;
+		     i += sizeof(u32))
+			*val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i));
+	else
+		for (i = FH_MEM_LOWER_BOUND_GEN2; i < FH_MEM_UPPER_BOUND_GEN2;
+		     i += sizeof(u32))
+			*val++ = cpu_to_le32(iwl_trans_pcie_read_prph(trans,
+								      i));
 
 	iwl_trans_release_nic_access(trans, &flags);
 
@@ -2752,7 +2759,12 @@ static struct iwl_trans_dump_data
 	len += sizeof(*data) + IWL_CSR_TO_DUMP;
 
 	/* FH registers */
-	len += sizeof(*data) + (FH_MEM_UPPER_BOUND - FH_MEM_LOWER_BOUND);
+	if (trans->cfg->gen2)
+		len += sizeof(*data) +
+		       (FH_MEM_UPPER_BOUND_GEN2 - FH_MEM_LOWER_BOUND_GEN2);
+	else
+		len += sizeof(*data) +
+		       (FH_MEM_UPPER_BOUND - FH_MEM_LOWER_BOUND);
 
 	if (dump_rbs) {
 		/* Dump RBs is supported only for pre-9000 devices (1 queue) */