armv8: ls1046a: initial icid setup support
Add infrastructure for ICID setup and device tree fixup on ARM
platforms. This include basic ICID setup for several devices.
Reviewed-by: Bharat Bhushan <bharat.bhushan@nxp.com>
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Makefile b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
index 1e9e468..5d6f68a 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
@@ -37,6 +37,7 @@
ifneq ($(CONFIG_ARCH_LS1046A),)
obj-$(CONFIG_SYS_HAS_SERDES) += ls1046a_serdes.o
+obj-y += icid.o ls1046_ids.o
endif
ifneq ($(CONFIG_ARCH_LS1088A),)
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/icid.c b/arch/arm/cpu/armv8/fsl-layerscape/icid.c
new file mode 100644
index 0000000..ae3b8da
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-layerscape/icid.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 NXP
+ */
+
+#include <common.h>
+#include <linux/libfdt.h>
+#include <fdt_support.h>
+
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/arch-fsl-layerscape/fsl_icid.h>
+
+static void set_icid(struct icid_id_table *tbl, int size)
+{
+ int i;
+
+ for (i = 0; i < size; i++)
+ out_be32((u32 *)(tbl[i].reg_addr), tbl[i].reg);
+}
+
+void set_icids(void)
+{
+ /* setup general icid offsets */
+ set_icid(icid_tbl, icid_tbl_sz);
+}
+
+int fdt_set_iommu_prop(void *blob, int off, int smmu_ph, u32 *ids, int num_ids)
+{
+ int i, ret;
+ u32 prop[8];
+
+ /*
+ * Note: The "iommus" property definition mentions Stream IDs while
+ * this code handles ICIDs. The current implementation assumes that
+ * ICIDs and Stream IDs are equal.
+ */
+ for (i = 0; i < num_ids; i++) {
+ prop[i * 2] = cpu_to_fdt32(smmu_ph);
+ prop[i * 2 + 1] = cpu_to_fdt32(ids[i]);
+ }
+ ret = fdt_setprop(blob, off, "iommus",
+ prop, sizeof(u32) * num_ids * 2);
+ if (ret) {
+ printf("WARNING unable to set iommus: %s\n", fdt_strerror(ret));
+ return ret;
+ }
+
+ return 0;
+}
+
+int fdt_fixup_icid_tbl(void *blob, int smmu_ph,
+ struct icid_id_table *tbl, int size)
+{
+ int i, err, off;
+
+ for (i = 0; i < size; i++) {
+ if (!tbl[i].compat)
+ continue;
+
+ off = fdt_node_offset_by_compat_reg(blob,
+ tbl[i].compat,
+ tbl[i].compat_addr);
+ if (off > 0) {
+ err = fdt_set_iommu_prop(blob, off, smmu_ph,
+ &tbl[i].id, 1);
+ if (err)
+ return err;
+ } else {
+ printf("WARNING could not find node %s: %s.\n",
+ tbl[i].compat, fdt_strerror(off));
+ }
+ }
+
+ return 0;
+}
+
+int fdt_get_smmu_phandle(void *blob)
+{
+ int noff, smmu_ph;
+
+ noff = fdt_node_offset_by_compatible(blob, -1, "arm,mmu-500");
+ if (noff < 0) {
+ printf("WARNING failed to get smmu node: %s\n",
+ fdt_strerror(noff));
+ return noff;
+ }
+
+ smmu_ph = fdt_get_phandle(blob, noff);
+ if (!smmu_ph) {
+ smmu_ph = fdt_create_phandle(blob, noff);
+ if (!smmu_ph) {
+ printf("WARNING failed to get smmu phandle\n");
+ return -1;
+ }
+ }
+
+ return smmu_ph;
+}
+
+void fdt_fixup_icid(void *blob)
+{
+ int smmu_ph;
+
+ smmu_ph = fdt_get_smmu_phandle(blob);
+ if (smmu_ph < 0)
+ return;
+
+ fdt_fixup_icid_tbl(blob, smmu_ph, icid_tbl, icid_tbl_sz);
+}
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ls1046_ids.c b/arch/arm/cpu/armv8/fsl-layerscape/ls1046_ids.c
new file mode 100644
index 0000000..1c528ab
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-layerscape/ls1046_ids.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 NXP
+ */
+
+#include <common.h>
+#include <asm/arch-fsl-layerscape/immap_lsch2.h>
+#include <asm/arch-fsl-layerscape/fsl_icid.h>
+
+struct icid_id_table icid_tbl[] = {
+#ifdef CONFIG_SYS_DPAA_QBMAN
+ SET_QMAN_ICID(FSL_DPAA1_STREAM_ID_START),
+ SET_BMAN_ICID(FSL_DPAA1_STREAM_ID_START + 1),
+#endif
+
+ SET_SDHC_ICID(FSL_SDHC_STREAM_ID),
+
+ SET_USB_ICID(1, "snps,dwc3", FSL_USB1_STREAM_ID),
+ SET_USB_ICID(2, "snps,dwc3", FSL_USB2_STREAM_ID),
+ SET_USB_ICID(3, "snps,dwc3", FSL_USB3_STREAM_ID),
+
+ SET_SATA_ICID("fsl,ls1046a-ahci", FSL_SATA_STREAM_ID),
+ SET_QDMA_ICID("fsl,ls1046a-qdma", FSL_QDMA_STREAM_ID),
+ SET_EDMA_ICID(FSL_EDMA_STREAM_ID),
+ SET_ETR_ICID(FSL_ETR_STREAM_ID),
+ SET_DEBUG_ICID(FSL_DEBUG_STREAM_ID),
+};
+
+int icid_tbl_sz = ARRAY_SIZE(icid_tbl);
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
index 8028d52..2f306c5 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
@@ -11,6 +11,7 @@
#include <asm/io.h>
#include <asm/global_data.h>
#include <asm/arch-fsl-layerscape/config.h>
+#include <asm/arch-fsl-layerscape/fsl_icid.h>
#ifdef CONFIG_LAYERSCAPE_NS_ACCESS
#include <fsl_csu.h>
#endif
@@ -623,6 +624,10 @@
erratum_a009798();
erratum_a008997();
erratum_a009007();
+
+#ifdef CONFIG_ARCH_LS1046A
+ set_icids();
+#endif
}
#endif