soc/intel/skylake: Use ITSS common code

This patch uses common ITSS library to setup
itss irq.

Change-Id: Ibe65a92f1604277bec229c67f4375b6636c0972d
Signed-off-by: Bora Guvendik <bora.guvendik@intel.com>
Reviewed-on: https://review.coreboot.org/19244
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

5 files changed, 22 insertions, 45 deletions

diff --git a/src/soc/intel/skylake/Kconfig b/src/soc/intel/skylake/Kconfig
index 23801b0ed353..95cf330d1e43 100644
--- a/src/soc/intel/skylake/Kconfig
+++ b/src/soc/intel/skylake/Kconfig
@@ -51,6 +51,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_ACPI_WAKE_SOURCE
 	select SOC_INTEL_COMMON_BLOCK
 	select SOC_INTEL_COMMON_BLOCK_GSPI
+	select SOC_INTEL_COMMON_BLOCK_ITSS
 	select SOC_INTEL_COMMON_BLOCK_LPSS
 	select SOC_INTEL_COMMON_BLOCK_PCR
 	select SOC_INTEL_COMMON_BLOCK_RTC
diff --git a/src/soc/intel/skylake/acpi/pch.asl b/src/soc/intel/skylake/acpi/pch.asl
index 78f31a804dfa..74cdb9ce8dc2 100644
--- a/src/soc/intel/skylake/acpi/pch.asl
+++ b/src/soc/intel/skylake/acpi/pch.asl
@@ -15,10 +15,10 @@
  * GNU General Public License for more details.
  */
 
+#include <intelblocks/itss.h>
 #include <intelblocks/pcr.h>
 #include <soc/iomap.h>
 #include <soc/irq.h>
-#include <soc/itss.h>
 #include <soc/gpio_defs.h>
 #include <soc/gpe.h>
 #include <soc/pcr_ids.h>
diff --git a/src/soc/intel/skylake/bootblock/pch.c b/src/soc/intel/skylake/bootblock/pch.c
index 12ce3d00a993..01bff0bf3342 100644
--- a/src/soc/intel/skylake/bootblock/pch.c
+++ b/src/soc/intel/skylake/bootblock/pch.c
@@ -18,11 +18,11 @@
 #include <chip.h>
 #include <device/device.h>
 #include <device/pci_def.h>
+#include <intelblocks/itss.h>
 #include <intelblocks/pcr.h>
 #include <intelblocks/rtc.h>
 #include <soc/bootblock.h>
 #include <soc/iomap.h>
-#include <soc/itss.h>
 #include <soc/lpc.h>
 #include <soc/p2sb.h>
 #include <soc/pch.h>
@@ -132,8 +132,7 @@ static void pch_interrupt_init(void)
 {
 	const struct device *dev;
 	const config_t *config;
-	u8 index = 0;
-	u8 pch_interrupt_routing[MAX_PXRC_CONFIG];
+	uint8_t pch_interrupt_routing[MAX_PXRC_CONFIG];
 
 	dev = dev_find_slot(0, PCI_DEVFN(PCH_DEV_SLOT_LPC, 0));
 	if (!dev || !dev->chip_info)
@@ -149,17 +148,10 @@ static void pch_interrupt_init(void)
 	pch_interrupt_routing[6] = config->pirqg_routing;
 	pch_interrupt_routing[7] = config->pirqh_routing;
 
-	for (index = 0; index < MAX_PXRC_CONFIG; index++) {
-		if (pch_interrupt_routing[index] < 16 &&
-			pch_interrupt_routing[index] > 2 &&
-			pch_interrupt_routing[index] != 8 &&
-			pch_interrupt_routing[index] != 13) {
-			pcr_write8(PID_ITSS, PCR_ITSS_PIRQA_ROUT + index,
-					pch_interrupt_routing[index]);
-		}
-	}
+	itss_irq_init(pch_interrupt_routing);
 }
 
+
 static void soc_config_acpibase(void)
 {
 	uint32_t reg32;
diff --git a/src/soc/intel/skylake/include/soc/itss.h b/src/soc/intel/skylake/include/soc/itss.h
index 0681e9d5dd85..5ff9bb1e5526 100644
--- a/src/soc/intel/skylake/include/soc/itss.h
+++ b/src/soc/intel/skylake/include/soc/itss.h
@@ -16,26 +16,8 @@
 #ifndef SOC_INTEL_SKL_ITSS_H
 #define SOC_INTEL_SKL_ITSS_H
 
-/* Max PXRC registers in ITSS*/
-#define MAX_PXRC_CONFIG         0x08
-
-/* PIRQA Routing Control Register*/
-#define PCR_ITSS_PIRQA_ROUT	0x3100
-/* PIRQB Routing Control Register*/
-#define PCR_ITSS_PIRQB_ROUT	0x3101
-/* PIRQC Routing Control Register*/
-#define PCR_ITSS_PIRQC_ROUT	0x3102
-/* PIRQD Routing Control Register*/
-#define PCR_ITSS_PIRQD_ROUT	0x3103
-/* PIRQE Routing Control Register*/
-#define PCR_ITSS_PIRQE_ROUT	0x3104
-/* PIRQF Routing Control Register*/
-#define PCR_ITSS_PIRQF_ROUT	0x3105
-/* PIRQG Routing Control Register*/
-#define PCR_ITSS_PIRQG_ROUT	0x3106
-/* PIRQH Routing Control Register*/
-#define PCR_ITSS_PIRQH_ROUT	0x3107
-/* ITSS Power reduction control */
-#define PCR_ITSS_ITSSPRC	0x3300
+#define ITSS_MAX_IRQ	119
+#define IRQS_PER_IPC	32
+#define NUM_IPC_REGS	((ITSS_MAX_IRQ + IRQS_PER_IPC - 1)/IRQS_PER_IPC)
 
 #endif	/* SOC_INTEL_SKL_ITSS_H */
diff --git a/src/soc/intel/skylake/lpc.c b/src/soc/intel/skylake/lpc.c
index db2b9607a561..f689e1cb17b7 100644
--- a/src/soc/intel/skylake/lpc.c
+++ b/src/soc/intel/skylake/lpc.c
@@ -30,13 +30,13 @@
 #include <cpu/cpu.h>
 #include <cpu/x86/smm.h>
 #include <cbmem.h>
+#include <intelblocks/itss.h>
 #include <intelblocks/pcr.h>
 #include <reg_script.h>
 #include <string.h>
 #include <soc/acpi.h>
 #include <soc/gpio.h>
 #include <soc/iomap.h>
-#include <soc/itss.h>
 #include <soc/lpc.h>
 #include <soc/nvs.h>
 #include <soc/pch.h>
@@ -98,15 +98,18 @@ static void pch_pirq_init(device_t dev)
 {
 	device_t irq_dev;
 	config_t *config = dev->chip_info;
+	uint8_t pch_interrupt_routing[MAX_PXRC_CONFIG];
 
-	pcr_write8(PID_ITSS, PCR_ITSS_PIRQA_ROUT, config->pirqa_routing);
-	pcr_write8(PID_ITSS, PCR_ITSS_PIRQB_ROUT, config->pirqb_routing);
-	pcr_write8(PID_ITSS, PCR_ITSS_PIRQC_ROUT, config->pirqc_routing);
-	pcr_write8(PID_ITSS, PCR_ITSS_PIRQD_ROUT, config->pirqd_routing);
-	pcr_write8(PID_ITSS, PCR_ITSS_PIRQE_ROUT, config->pirqe_routing);
-	pcr_write8(PID_ITSS, PCR_ITSS_PIRQF_ROUT, config->pirqf_routing);
-	pcr_write8(PID_ITSS, PCR_ITSS_PIRQG_ROUT, config->pirqg_routing);
-	pcr_write8(PID_ITSS, PCR_ITSS_PIRQH_ROUT, config->pirqh_routing);
+	pch_interrupt_routing[0] = config->pirqa_routing;
+	pch_interrupt_routing[1] = config->pirqb_routing;
+	pch_interrupt_routing[2] = config->pirqc_routing;
+	pch_interrupt_routing[3] = config->pirqd_routing;
+	pch_interrupt_routing[4] = config->pirqe_routing;
+	pch_interrupt_routing[5] = config->pirqf_routing;
+	pch_interrupt_routing[6] = config->pirqg_routing;
+	pch_interrupt_routing[7] = config->pirqh_routing;
+
+	itss_irq_init(pch_interrupt_routing);
 
 	for (irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) {
 		u8 int_pin = 0, int_line = 0;
@@ -159,12 +162,11 @@ static const struct reg_script pch_misc_init_script[] = {
 static void clock_gate_8254(struct device *dev)
 {
 	config_t *config = dev->chip_info;
-	const uint32_t cge8254_mask = (1 << 2);
 
 	if (!config->clock_gate_8254)
 		return;
 
-	pcr_rmw32(PID_ITSS, PCR_ITSS_ITSSPRC, ~cge8254_mask, cge8254_mask);
+	itss_clock_gate_8254();
 }
 
 static void lpc_init(struct device *dev)