Merge branches 'acpi-x86', 'acpi-cppc' and 'acpi-soc'

* acpi-x86:
  x86: ACPI: make variable names clearer in acpi_parse_madt_lapic_entries()
  x86: ACPI: remove extraneous white space after semicolon

* acpi-cppc:
  ACPI / CPPC: Support PCC with interrupt flag
  ACPI / CPPC: Add prefix cppc to cpudata structure name
  ACPI / CPPC: Add support for functional fixed hardware address
  ACPI / CPPC: Don't return on CPPC probe failure
  ACPI / CPPC: Allow build with ACPI_CPU_FREQ_PSS config
  ACPI / CPPC: check for error bit in PCC status field
  ACPI / CPPC: move all PCC related information into pcc_data
  ACPI / CPPC: add sysfs support to compute delivered performance
  ACPI / CPPC: set a non-zero value for transition_latency
  ACPI / CPPC: support for batching CPPC requests
  ACPI / CPPC: acquire pcc_lock only while accessing PCC subspace
  ACPI / CPPC: restructure read/writes for efficient sys mapped reg ops
  mailbox: pcc: Support HW-Reduced Communication Subspace type 2

* acpi-soc:
  ACPI / APD: constify local structures
  ACPI / APD: Add device HID for Vulcan SPI controller

arch/x86/kernel/acpi/Makefile

 obj-$(CONFIG_ACPI)		+= boot.o
 obj-$(CONFIG_ACPI_SLEEP)	+= sleep.o wakeup_$(BITS).o
 obj-$(CONFIG_ACPI_APEI)		+= apei.o
+obj-$(CONFIG_ACPI_CPPC_LIB)	+= cppc_msr.o
 
 ifneq ($(CONFIG_ACPI_PROCESSOR),)
 obj-y				+= cstate.o

arch/x86/kernel/acpi/boot.c

@@ -1031,8 +1031,8 @@ static int __init acpi_parse_madt_lapic_entries(void)
 			return ret;
 		}
 
-		x2count = madt_proc[0].count;
-		count = madt_proc[1].count;
+		count = madt_proc[0].count;
+		x2count = madt_proc[1].count;
 	}
 	if (!count && !x2count) {
 		printk(KERN_ERR PREFIX "No LAPIC entries present\n");

arch/x86/kernel/acpi/cppc_msr.c

+/*
+ * cppc_msr.c:  MSR Interface for CPPC
+ * Copyright (c) 2016, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ */
+
+#include <acpi/cppc_acpi.h>
+#include <asm/msr.h>
+
+/* Refer to drivers/acpi/cppc_acpi.c for the description of functions */
+
+bool cpc_ffh_supported(void)
+{
+	return true;
+}
+
+int cpc_read_ffh(int cpunum, struct cpc_reg *reg, u64 *val)
+{
+	int err;
+
+	err = rdmsrl_safe_on_cpu(cpunum, reg->address, val);
+	if (!err) {
+		u64 mask = GENMASK_ULL(reg->bit_offset + reg->bit_width - 1,
+				       reg->bit_offset);
+
+		*val &= mask;
+		*val >>= reg->bit_offset;
+	}
+	return err;
+}
+
+int cpc_write_ffh(int cpunum, struct cpc_reg *reg, u64 val)
+{
+	u64 rd_val;
+	int err;
+
+	err = rdmsrl_safe_on_cpu(cpunum, reg->address, &rd_val);
+	if (!err) {
+		u64 mask = GENMASK_ULL(reg->bit_offset + reg->bit_width - 1,
+				       reg->bit_offset);
+
+		val <<= reg->bit_offset;
+		val &= mask;
+		rd_val &= ~mask;
+		rd_val |= val;
+		err = wrmsrl_safe_on_cpu(cpunum, reg->address, rd_val);
+	}
+	return err;
+}

drivers/acpi/Kconfig

@@ -227,7 +227,6 @@ config ACPI_MCFG
 config ACPI_CPPC_LIB
 	bool
 	depends on ACPI_PROCESSOR
-	depends on !ACPI_CPU_FREQ_PSS
 	select MAILBOX
 	select PCC
 	help

drivers/acpi/acpi_apd.c

@@ -72,7 +72,7 @@ static int acpi_apd_setup(struct apd_private_data *pdata)
 }
 
 #ifdef CONFIG_X86_AMD_PLATFORM_DEVICE
-static struct apd_device_desc cz_i2c_desc = {
+static const struct apd_device_desc cz_i2c_desc = {
 	.setup = acpi_apd_setup,
 	.fixed_clk_rate = 133000000,
 };
@@ -84,7 +84,7 @@ static struct property_entry uart_properties[] = {
 	{ },
 };
 
-static struct apd_device_desc cz_uart_desc = {
+static const struct apd_device_desc cz_uart_desc = {
 	.setup = acpi_apd_setup,
 	.fixed_clk_rate = 48000000,
 	.properties = uart_properties,
@@ -92,10 +92,15 @@ static struct apd_device_desc cz_uart_desc = {
 #endif
 
 #ifdef CONFIG_ARM64
-static struct apd_device_desc xgene_i2c_desc = {
+static const struct apd_device_desc xgene_i2c_desc = {
 	.setup = acpi_apd_setup,
 	.fixed_clk_rate = 100000000,
 };
+
+static const struct apd_device_desc vulcan_spi_desc = {
+	.setup = acpi_apd_setup,
+	.fixed_clk_rate = 133000000,
+};
 #endif
 
 #else
@@ -164,6 +169,7 @@ static const struct acpi_device_id acpi_apd_device_ids[] = {
 #endif
 #ifdef CONFIG_ARM64
 	{ "APMC0D0F", APD_ADDR(xgene_i2c_desc) },
+	{ "BRCM900D", APD_ADDR(vulcan_spi_desc) },
 #endif
 	{ }
 };

drivers/acpi/processor_driver.c

@@ -245,8 +245,8 @@ static int __acpi_processor_start(struct acpi_device *device)
 		return 0;
 
 	result = acpi_cppc_processor_probe(pr);
-	if (result)
-		return -ENODEV;
+	if (result && !IS_ENABLED(CONFIG_ACPI_CPU_FREQ_PSS))
+		dev_warn(&device->dev, "CPPC data invalid or not present\n");
 
 	if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver)
 		acpi_processor_power_init(pr);

drivers/cpufreq/cppc_cpufreq.c

@@ -30,13 +30,13 @@
  * performance capabilities, desired performance level
  * requested etc.
  */
-static struct cpudata **all_cpu_data;
+static struct cppc_cpudata **all_cpu_data;
 
 static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
 		unsigned int target_freq,
 		unsigned int relation)
 {
-	struct cpudata *cpu;
+	struct cppc_cpudata *cpu;
 	struct cpufreq_freqs freqs;
 	int ret = 0;
 
@@ -66,7 +66,7 @@ static int cppc_verify_policy(struct cpufreq_policy *policy)
 static void cppc_cpufreq_stop_cpu(struct cpufreq_policy *policy)
 {
 	int cpu_num = policy->cpu;
-	struct cpudata *cpu = all_cpu_data[cpu_num];
+	struct cppc_cpudata *cpu = all_cpu_data[cpu_num];
 	int ret;
 
 	cpu->perf_ctrls.desired_perf = cpu->perf_caps.lowest_perf;
@@ -79,7 +79,7 @@ static void cppc_cpufreq_stop_cpu(struct cpufreq_policy *policy)
 
 static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
 {
-	struct cpudata *cpu;
+	struct cppc_cpudata *cpu;
 	unsigned int cpu_num = policy->cpu;
 	int ret = 0;
 
@@ -98,6 +98,7 @@ static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
 	policy->max = cpu->perf_caps.highest_perf;
 	policy->cpuinfo.min_freq = policy->min;
 	policy->cpuinfo.max_freq = policy->max;
+	policy->cpuinfo.transition_latency = cppc_get_transition_latency(cpu_num);
 	policy->shared_type = cpu->shared_type;
 
 	if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY)
@@ -134,7 +135,7 @@ static struct cpufreq_driver cppc_cpufreq_driver = {
 static int __init cppc_cpufreq_init(void)
 {
 	int i, ret = 0;
-	struct cpudata *cpu;
+	struct cppc_cpudata *cpu;
 
 	if (acpi_disabled)
 		return -ENODEV;
@@ -144,7 +145,7 @@ static int __init cppc_cpufreq_init(void)
 		return -ENOMEM;
 
 	for_each_possible_cpu(i) {
-		all_cpu_data[i] = kzalloc(sizeof(struct cpudata), GFP_KERNEL);
+		all_cpu_data[i] = kzalloc(sizeof(struct cppc_cpudata), GFP_KERNEL);
 		if (!all_cpu_data[i])
 			goto out;
 
@@ -175,7 +176,7 @@ static int __init cppc_cpufreq_init(void)
 
 static void __exit cppc_cpufreq_exit(void)
 {
-	struct cpudata *cpu;
+	struct cppc_cpudata *cpu;
 	int i;
 
 	cpufreq_unregister_driver(&cppc_cpufreq_driver);

include/acpi/cppc_acpi.h

@@ -24,7 +24,9 @@
 #define CPPC_NUM_ENT	21
 #define CPPC_REV	2
 
-#define PCC_CMD_COMPLETE 1
+#define PCC_CMD_COMPLETE_MASK	(1 << 0)
+#define PCC_ERROR_MASK		(1 << 2)
+
 #define MAX_CPC_REG_ENT 19
 
 /* CPPC specific PCC commands. */
@@ -49,6 +51,7 @@ struct cpc_reg {
  */
 struct cpc_register_resource {
 	acpi_object_type type;
+	u64 __iomem *sys_mem_vaddr;
 	union {
 		struct cpc_reg reg;
 		u64 int_value;
@@ -60,8 +63,11 @@ struct cpc_desc {
 	int num_entries;
 	int version;
 	int cpu_id;
+	int write_cmd_status;
+	int write_cmd_id;
 	struct cpc_register_resource cpc_regs[MAX_CPC_REG_ENT];
 	struct acpi_psd_package domain_info;
+	struct kobject kobj;
 };
 
 /* These are indexes into the per-cpu cpc_regs[]. Order is important. */
@@ -96,7 +102,6 @@ enum cppc_regs {
 struct cppc_perf_caps {
 	u32 highest_perf;
 	u32 nominal_perf;
-	u32 reference_perf;
 	u32 lowest_perf;
 };
 
@@ -108,13 +113,13 @@ struct cppc_perf_ctrls {
 
 struct cppc_perf_fb_ctrs {
 	u64 reference;
-	u64 prev_reference;
 	u64 delivered;
-	u64 prev_delivered;
+	u64 reference_perf;
+	u64 ctr_wrap_time;
 };
 
 /* Per CPU container for runtime CPPC management. */
-struct cpudata {
+struct cppc_cpudata {
 	int cpu;
 	struct cppc_perf_caps perf_caps;
 	struct cppc_perf_ctrls perf_ctrls;
@@ -127,6 +132,7 @@ struct cpudata {
 extern int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs);
 extern int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls);
 extern int cppc_get_perf_caps(int cpu, struct cppc_perf_caps *caps);
-extern int acpi_get_psd_map(struct cpudata **);
+extern int acpi_get_psd_map(struct cppc_cpudata **);
+extern unsigned int cppc_get_transition_latency(int cpu);
 
 #endif /* _CPPC_ACPI_H*/