Resource allocation for XLP SoC SDHCI slots

The on-chip SD slots do not have PCI BARs corresponding to them, so
this has to be handled in the custom SoC memory allocation.

Provide memory resource for rids corresponding to BAR 0 and 1 in
the custom allocation code.

2 files changed, 21 insertions, 0 deletions

diff --git a/sys/mips/conf/std.XLP b/sys/mips/conf/std.XLP
index ce71e36..5f7b7ad 100644
--- a/sys/mips/conf/std.XLP
+++ b/sys/mips/conf/std.XLP
@@ -110,3 +110,8 @@ options 	GEOM_ELI
 # NOR
 device		cfi
 device		cfid
+
+# MMC/SD
+device		mmc			# MMC/SD bus
+device		mmcsd			# MMC/SD memory card
+device		sdhci			# Generic PCI SD Host Controller
diff --git a/sys/mips/nlm/xlp_pci.c b/sys/mips/nlm/xlp_pci.c
index ef0f4f8..4b58db1 100644
--- a/sys/mips/nlm/xlp_pci.c
+++ b/sys/mips/nlm/xlp_pci.c
@@ -165,8 +165,22 @@ xlp_pci_alloc_resource(device_t bus, device_t child, int type, int *rid,
 			/* no emulation for IO ports */
 			if (type == SYS_RES_IOPORT)
 				return (NULL);
+
 			start = xlp_devinfo->mem_res_start;
 			count = XLP_PCIE_CFG_SIZE - XLP_IO_PCI_HDRSZ;
+
+			/* MMC needs to 2 slots with rids 16 and 20 and a
+			 * fixup for size */
+			if (pci_get_device(child) == PCI_DEVICE_ID_NLM_MMC) {
+				count = 0x100;
+				if (*rid == 16)
+					; /* first slot already setup */
+				else if (*rid == 20)
+					start += 0x100; /* second slot */
+				else
+					return (NULL);
+			}
+
 			end = start + count - 1;
 			r = BUS_ALLOC_RESOURCE(device_get_parent(bus), child,
 			    type, rid, start, end, count, flags);
@@ -254,6 +268,8 @@ xlp_add_soc_child(device_t pcib, device_t dev, int b, int s, int f)
 	xlp_dinfo = (struct xlp_devinfo *)dinfo;
 	xlp_dinfo->irq = irq;
 	xlp_dinfo->flags = flags;
+
+	/* memory resource from ecfg space, if MEM_RES_EMUL is set */
 	if ((flags & MEM_RES_EMUL) != 0)
 		xlp_dinfo->mem_res_start = XLP_DEFAULT_IO_BASE + devoffset +
 		    XLP_IO_PCI_HDRSZ;