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Message-ID: <1871109.TLkxdtWsSY@rafael.j.wysocki>
Date: Wed, 14 Jan 2026 13:39:10 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Linux ACPI <linux-acpi@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
"Dumbre, Saket" <saket.dumbre@...el.com>
Subject: [PATCH v1 25/26] ACPICA: Replace TPRn Base and Limit registers
From: Michal Camacho Romero <michal.camacho.romero@...el.com>
Replace TPRn Base and Limit registers with compatible bitmasks for them.
Link: https://github.com/acpica/acpica/commit/be91c5813936
Signed-off-by: Michal Camacho Romero <michal.camacho.romero@...el.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
include/acpi/actbl1.h | 99 +++++++++++++++++++++++++++++++------------
1 file changed, 72 insertions(+), 27 deletions(-)
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index cdcda64d1d8e..8331a3494b75 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -2005,28 +2005,57 @@ struct acpi_tpr_aux_sr {
};
/*
- * TPRn_BASE
+ * TPRn_BASE (ACPI_TPRN_BASE_REG)
*
* Specifies the start address of TPRn region. TPR region address and size must
* be with 1MB resolution. These bits are compared with the result of the
* TPRn_LIMIT[63:20] * applied to the incoming address, to determine if an
* access fall within the TPRn defined region.
+ *
+ * Minimal TPRn_Base resolution is 1MB.
+ * Applied to the incoming address, to determine if
+ * an access fall within the TPRn defined region.
+ * Width is determined by a bus width which can be
+ * obtained via CPUID function 0x80000008.
*/
-struct acpi_tprn_base_reg {
- u64 reserved0:3;
- u64 rw:1; /* access: 1 == RO, 0 == RW (for TPR must be RW) */
- u64 enable:1; /* 0 == range enabled, 1 == range disabled */
- u64 reserved1:15;
- u64 tpr_base_rw:44;
- /*
- * Minimal TPRn_Base resolution is 1MB.
- * Applied to the incoming address, to determine if
- * an access fall within the TPRn defined region.
- * Width is determined by a bus width which can be
- * obtained via CPUID function 0x80000008.
- */
-};
+typedef u64 ACPI_TPRN_BASE_REG;
+
+/* TPRn_BASE Register Bit Masks */
+
+/* Bit 3 - RW: access: 1 == RO, 0 == RW register (for TPR must be RW) */
+#define ACPI_TPRN_BASE_RW_SHIFT 3
+#define ACPI_TPRN_BASE_RW_MASK ((u64) 1 << ACPI_TPRN_BASE_RW_SHIFT)
+
+/*
+ * Bit 4 - Enable: 0 – TPRn address range enabled;
+ * 1 – TPRn address range disabled.
+ */
+#define ACPI_TPRN_BASE_ENABLE_SHIFT 4
+#define ACPI_TPRN_BASE_ENABLE_MASK ((u64) 1 << ACPI_TPRN_BASE_ENABLE_SHIFT)
+
+/* Bits 63:20 - tpr_base_rw */
+#define ACPI_TPRN_BASE_ADDR_SHIFT 20
+#define ACPI_TPRN_BASE_ADDR_MASK ((u64) 0xFFFFFFFFFFF << \
+ ACPI_TPRN_BASE_ADDR_SHIFT)
+
+/* TPRn_BASE Register Bit Handlers*/
+#define GET_TPRN_BASE_RW(reg) (((u64) reg & ACPI_TPRN_BASE_RW_MASK) >> \
+ ACPI_TPRN_BASE_RW_SHIFT)
+#define GET_TPRN_BASE_ENABLE(reg) (((u64) reg & ACPI_TPRN_BASE_ENABLE_MASK) \
+ >> ACPI_TPRN_BASE_ENABLE_SHIFT)
+#define GET_TPRN_BASE_ADDR(reg) (((u64) reg & ACPI_TPRN_BASE_ADDR_MASK) \
+ >> ACPI_TPRN_BASE_ADDR_SHIFT)
+
+#define SET_TPRN_BASE_RW(reg, val) ACPI_REGISTER_INSERT_VALUE(reg, \
+ ACPI_TPRN_BASE_RW_SHIFT, \
+ ACPI_TPRN_BASE_RW_MASK, val);
+#define SET_TPRN_BASE_ENABLE(reg, val) ACPI_REGISTER_INSERT_VALUE(reg, \
+ ACPI_TPRN_BASE_ENABLE_SHIFT, \
+ ACPI_TPRN_BASE_ENABLE_MASK, val);
+#define SET_TPRN_BASE_ADDR(reg, val) ACPI_REGISTER_INSERT_VALUE(reg, \
+ ACPI_TPRN_BASE_ADDR_SHIFT, \
+ ACPI_TPRN_BASE_ADDR_MASK, val);
/*
* TPRn_LIMIT
@@ -2035,20 +2064,36 @@ struct acpi_tprn_base_reg {
* to prohibit certain system agents from accessing memory. When an agent
* sends a request upstream, whether snooped or not, a TPR prevents that
* transaction from changing the state of memory.
+ *
+ * Minimal TPRn_Limit resolution is 1MB.
+ * Width is determined by a bus width
*/
-struct acpi_tprn_limit_reg {
- u64 reserved0:3;
- u64 rw:1; /* access: 1 == RO, 0 == RW (for TPR must be RW) */
- u64 enable:1; /* 0 == range enabled, 1 == range disabled */
- u64 reserved1:15;
- u64 tpr_limit_rw:44;
- /*
- * Minimal TPRn_Limit resolution is 1MB.
- * These bits define TPR limit address.
- * Width is determined by a bus width.
- */
-};
+typedef u64 ACPI_TPRN_LIMIT_REG;
+
+/* TPRn_LIMIT Register Bit Masks */
+
+/* Bit 3 - RW: access: 1 == RO, 0 == RW register (for TPR must be RW) */
+#define ACPI_TPRN_LIMIT_RW_SHIFT 3
+#define ACPI_TPRN_LIMIT_RW_MASK ((u64) 1 << ACPI_TPRN_LIMIT_RW_SHIFT)
+
+/* Bits 63:20 - tpr_limit_rw */
+#define ACPI_TPRN_LIMIT_ADDR_SHIFT 20
+#define ACPI_TPRN_LIMIT_ADDR_MASK ((u64) 0xFFFFFFFFFFF << \
+ ACPI_TPRN_LIMIT_ADDR_SHIFT)
+
+/* TPRn_LIMIT Register Bit Handlers*/
+#define GET_TPRN_LIMIT_RW(reg) (((u64) reg & ACPI_TPRN_LIMIT_RW_MASK) \
+ >> ACPI_TPRN_LIMIT_RW_SHIFT)
+#define GET_TPRN_LIMIT_ADDR(reg) (((u64) reg & ACPI_TPRN_LIMIT_ADDR_MASK) \
+ >> ACPI_TPRN_LIMIT_ADDR_SHIFT)
+
+#define SET_TPRN_LIMIT_RW(reg, val) ACPI_REGISTER_INSERT_VALUE(reg, \
+ ACPI_TPRN_LIMIT_RW_SHIFT, \
+ ACPI_TPRN_LIMIT_RW_MASK, val);
+#define SET_TPRN_LIMIT_ADDR(reg, val) ACPI_REGISTER_INSERT_VALUE(reg, \
+ ACPI_TPRN_LIMIT_ADDR_SHIFT, \
+ ACPI_TPRN_LIMIT_ADDR_MASK, val);
/*
* SERIALIZE_REQUEST
--
2.51.0
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