soc/amd/cezanne,soc/intel/common: rework CPPC table generation

Make use of the newly introduced ACPI macros for CPPC table generation
that currently exists of a bunch of confusing assignments of structs
that only get partially filled.

Test: dumped SSDT before and after do not differ.

Change-Id: I844d191b1134b98e409240ede71e2751e51e2159
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57888
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Lance Zhao
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

1 files changed, 32 insertions, 172 deletions

diff --git a/src/cpu/intel/common/common_init.c b/src/cpu/intel/common/common_init.c
index c5f43ef22ea9..6203922fd829 100644
--- a/src/cpu/intel/common/common_init.c
+++ b/src/cpu/intel/common/common_init.c
@@ -103,184 +103,44 @@ void set_feature_ctrl_lock(void)
  */
 void cpu_init_cppc_config(struct cppc_config *config, u32 version)
 {
-	acpi_addr_t msr = {
-		.space_id   = ACPI_ADDRESS_SPACE_FIXED,
-		.bit_width  = 8,
-		.bit_offset = 0,
-		.access_size = ACPI_ACCESS_SIZE_QWORD_ACCESS,
-		.addrl      = 0,
-		.addrh      = 0,
-	};
-	static const acpi_addr_t unsupported = {
-		.space_id   = ACPI_ADDRESS_SPACE_MEMORY,
-		.bit_width  = 0,
-		.bit_offset = 0,
-		.access_size = ACPI_ACCESS_SIZE_UNDEFINED,
-		.addrl      = 0,
-		.addrh      = 0,
-	};
-
 	config->version = version;
 
-	msr.addrl = IA32_HWP_CAPABILITIES;
-
-	/*
-	 * Highest Performance:
-	 * ResourceTemplate(){Register(FFixedHW, 0x08, 0x00, 0x771, 0x04,)},
-	 */
-	config->regs[CPPC_HIGHEST_PERF] = msr;
-
-	/*
-	 * Lowest Nonlinear Performance -> Most Efficient Performance:
-	 * ResourceTemplate(){Register(FFixedHW, 0x08, 0x10, 0x771, 0x04,)},
-	 */
-	msr.bit_offset = 16;
-	config->regs[CPPC_LOWEST_NONL_PERF] = msr;
-
-	/*
-	 * Lowest Performance:
-	 * ResourceTemplate(){Register(FFixedHW, 0x08, 0x18, 0x771, 0x04,)},
-	 */
-	msr.bit_offset = 24;
-	config->regs[CPPC_LOWEST_PERF] = msr;
-
-	/*
-	 * Guaranteed Performance Register:
-	 * ResourceTemplate(){Register(FFixedHW, 0x08, 0x08, 0x771, 0x04,)},
-	 */
-	msr.bit_offset = 8;
-	config->regs[CPPC_GUARANTEED_PERF] = msr;
-
-	msr.addrl = MSR_PLATFORM_INFO;
-
-	/*
-	 * Nominal Performance -> Maximum Non-Turbo Ratio:
-	 * ResourceTemplate(){Register(FFixedHW, 0x08, 0x08, 0xce, 0x04,)},
-	 */
-	msr.bit_offset = 8;
-	config->regs[CPPC_NOMINAL_PERF] = msr;
-
-	msr.addrl = IA32_HWP_REQUEST;
-
-	/*
-	 * Desired Performance Register:
-	 * ResourceTemplate(){Register(FFixedHW, 0x08, 0x10, 0x774, 0x04,)},
-	 */
-	msr.bit_offset = 16;
-	config->regs[CPPC_DESIRED_PERF] = msr;
-
-	/*
-	 * Minimum Performance Register:
-	 * ResourceTemplate(){Register(FFixedHW, 0x08, 0x00, 0x774, 0x04,)},
-	 */
-	msr.bit_offset = 0;
-	config->regs[CPPC_MIN_PERF] = msr;
-
-	/*
-	 * Maximum Performance Register:
-	 * ResourceTemplate(){Register(FFixedHW, 0x08, 0x08, 0x774, 0x04,)},
-	 */
-	msr.bit_offset = 8;
-	config->regs[CPPC_MAX_PERF] = msr;
-
-	/*
-	 * Performance Reduction Tolerance Register:
-	 * ResourceTemplate(){Register(SystemMemory, 0x00, 0x00, 0x0,,)},
-	 */
-	config->regs[CPPC_PERF_REDUCE_TOLERANCE] = unsupported;
-
-	/*
-	 * Time Window Register:
-	 * ResourceTemplate(){Register(SystemMemory, 0x00, 0x00, 0x0,,)},
-	 */
-	config->regs[CPPC_TIME_WINDOW] = unsupported;
-
-	/*
-	 * Counter Wraparound Time:
-	 * ResourceTemplate(){Register(SystemMemory, 0x00, 0x00, 0x0,,)},
-	 */
-	config->regs[CPPC_COUNTER_WRAP] = unsupported;
-
-	msr.addrl = IA32_MPERF;
-
-	/*
-	 * Reference Performance Counter Register:
-	 * ResourceTemplate(){Register(FFixedHW, 0x40, 0x00, 0x0E7, 0x04,)},
-	 */
-	msr.bit_width = 64;
-	msr.bit_offset = 0;
-	config->regs[CPPC_REF_PERF_COUNTER] = msr;
-
-	msr.addrl = IA32_APERF;
-
-	/*
-	 * Delivered Performance Counter Register:
-	 * ResourceTemplate(){Register(FFixedHW, 0x40, 0x00, 0x0E8, 0x04,)},
-	 */
-	config->regs[CPPC_DELIVERED_PERF_COUNTER] = msr;
-
-	msr.addrl = IA32_HWP_STATUS;
-
-	/*
-	 * Performance Limited Register:
-	 * ResourceTemplate(){Register(FFixedHW, 0x01, 0x02, 0x777, 0x04,)},
-	 */
-	msr.bit_width = 1;
-	msr.bit_offset = 2;
-	config->regs[CPPC_PERF_LIMITED] = msr;
-
-	msr.addrl = IA32_PM_ENABLE;
-
-	/*
-	 * CPPC Enable Register:
-	 * ResourceTemplate(){Register(FFixedHW, 0x01, 0x00, 0x770, 0x04,)},
-	 */
-	msr.bit_offset = 0;
-	config->regs[CPPC_ENABLE] = msr;
-
-	if (version >= 2) {
-		/* Autonomous Selection Enable is populated below */
+	config->regs[CPPC_HIGHEST_PERF]			= ACPI_REG_MSR(IA32_HWP_CAPABILITIES, 0, 8);
+	config->regs[CPPC_NOMINAL_PERF]			= ACPI_REG_MSR(MSR_PLATFORM_INFO, 8, 8);
+	config->regs[CPPC_LOWEST_NONL_PERF]		= ACPI_REG_MSR(IA32_HWP_CAPABILITIES, 16, 8);
+	config->regs[CPPC_LOWEST_PERF]			= ACPI_REG_MSR(IA32_HWP_CAPABILITIES, 24, 8);
+	config->regs[CPPC_GUARANTEED_PERF]		= ACPI_REG_MSR(IA32_HWP_CAPABILITIES, 8, 8);
+	config->regs[CPPC_DESIRED_PERF]			= ACPI_REG_MSR(IA32_HWP_REQUEST, 16, 8);
+	config->regs[CPPC_MIN_PERF]			= ACPI_REG_MSR(IA32_HWP_REQUEST, 0, 8);
+	config->regs[CPPC_MAX_PERF]			= ACPI_REG_MSR(IA32_HWP_REQUEST, 8, 8);
+	config->regs[CPPC_PERF_REDUCE_TOLERANCE]	= ACPI_REG_UNSUPPORTED;
+	config->regs[CPPC_TIME_WINDOW]			= ACPI_REG_UNSUPPORTED;
+	config->regs[CPPC_COUNTER_WRAP]			= ACPI_REG_UNSUPPORTED;
+	config->regs[CPPC_REF_PERF_COUNTER]		= ACPI_REG_MSR(IA32_MPERF, 0, 64);
+	config->regs[CPPC_DELIVERED_PERF_COUNTER]	= ACPI_REG_MSR(IA32_APERF, 0, 64);
+	config->regs[CPPC_PERF_LIMITED]			= ACPI_REG_MSR(IA32_HWP_STATUS, 2, 1);
+	config->regs[CPPC_ENABLE]			= ACPI_REG_MSR(IA32_PM_ENABLE, 0, 1);
+
+	if (version < 2)
+		return;
 
-		msr.addrl = IA32_HWP_REQUEST;
+	config->regs[CPPC_AUTO_SELECT] = (acpi_addr_t){
+		.space_id    = ACPI_ADDRESS_SPACE_MEMORY,
+		.bit_width   = 32,
+		.bit_offset  = 0,
+		.access_size = ACPI_ACCESS_SIZE_UNDEFINED,
+		.addrl       = 1,
+	};
 
-		/*
-		 * Autonomous Activity Window Register
-		 * ResourceTemplate(){Register(FFixedHW, 0x0a, 0x20, 0x774, 0x04,)},
-		 */
-		msr.bit_width = 10;
-		msr.bit_offset = 32;
-		config->regs[CPPC_AUTO_ACTIVITY_WINDOW] = msr;
+	config->regs[CPPC_AUTO_ACTIVITY_WINDOW]		= ACPI_REG_MSR(IA32_HWP_REQUEST, 32, 10);
+	config->regs[CPPC_PERF_PREF]			= ACPI_REG_MSR(IA32_HWP_REQUEST, 24, 8);
+	config->regs[CPPC_REF_PERF]			= ACPI_REG_UNSUPPORTED;
 
-		/*
-		 * Autonomous Energy Performance Preference Register
-		 * ResourceTemplate(){Register(FFixedHW, 0x08, 0x18, 0x774, 0x04,)},
-		 */
-		msr.bit_width = 8;
-		msr.bit_offset = 24;
-		config->regs[CPPC_PERF_PREF] = msr;
-
-		/* Reference Performance */
-		config->regs[CPPC_REF_PERF] = unsupported;
-
-		if (version >= 3) {
-			/* Lowest Frequency */
-			config->regs[CPPC_LOWEST_FREQ] = unsupported;
-			/* Nominal Frequency */
-			config->regs[CPPC_NOMINAL_FREQ] = unsupported;
-		}
+	if (version < 3)
+		return;
 
-		/*
-		 * Autonomous Selection Enable = 1
-		 * This field is actually the first addition in version 2 but
-		 * it's so unlike the others I'm populating it last.
-		 */
-		msr.space_id    = ACPI_ADDRESS_SPACE_MEMORY;
-		msr.bit_width   = 32;
-		msr.bit_offset  = 0;
-		msr.access_size = ACPI_ACCESS_SIZE_UNDEFINED;
-		msr.addrl       = 1;
-		config->regs[CPPC_AUTO_SELECT] = msr;
-	}
+	config->regs[CPPC_LOWEST_FREQ]			= ACPI_REG_UNSUPPORTED;
+	config->regs[CPPC_NOMINAL_FREQ]			= ACPI_REG_UNSUPPORTED;
 }
 
 void set_aesni_lock(void)