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Diffstat (limited to 'arch/mips/include/asm/processor.h')
-rw-r--r--arch/mips/include/asm/processor.h132
1 files changed, 88 insertions, 44 deletions
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index bd98b503f04..ad70cba8daf 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -28,7 +28,6 @@
/*
* System setup and hardware flags..
*/
-extern void (*cpu_wait)(void);
extern unsigned int vced_count, vcei_count;
@@ -44,11 +43,16 @@ extern unsigned int vced_count, vcei_count;
#define SPECIAL_PAGES_SIZE PAGE_SIZE
#ifdef CONFIG_32BIT
+#ifdef CONFIG_KVM_GUEST
+/* User space process size is limited to 1GB in KVM Guest Mode */
+#define TASK_SIZE 0x3fff8000UL
+#else
/*
* User space process size: 2GB. This is hardcoded into a few places,
* so don't change it unless you know what you are doing.
*/
#define TASK_SIZE 0x7fff8000UL
+#endif
#ifdef __KERNEL__
#define STACK_TOP_MAX TASK_SIZE
@@ -93,18 +97,48 @@ extern unsigned int vced_count, vcei_count;
#define NUM_FPU_REGS 32
-typedef __u64 fpureg_t;
+#ifdef CONFIG_CPU_HAS_MSA
+# define FPU_REG_WIDTH 128
+#else
+# define FPU_REG_WIDTH 64
+#endif
+
+union fpureg {
+ __u32 val32[FPU_REG_WIDTH / 32];
+ __u64 val64[FPU_REG_WIDTH / 64];
+};
+
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+# define FPR_IDX(width, idx) (idx)
+#else
+# define FPR_IDX(width, idx) ((FPU_REG_WIDTH / (width)) - 1 - (idx))
+#endif
+
+#define BUILD_FPR_ACCESS(width) \
+static inline u##width get_fpr##width(union fpureg *fpr, unsigned idx) \
+{ \
+ return fpr->val##width[FPR_IDX(width, idx)]; \
+} \
+ \
+static inline void set_fpr##width(union fpureg *fpr, unsigned idx, \
+ u##width val) \
+{ \
+ fpr->val##width[FPR_IDX(width, idx)] = val; \
+}
+
+BUILD_FPR_ACCESS(32)
+BUILD_FPR_ACCESS(64)
/*
- * It would be nice to add some more fields for emulator statistics, but there
- * are a number of fixed offsets in offset.h and elsewhere that would have to
- * be recalculated by hand. So the additional information will be private to
- * the FPU emulator for now. See asm-mips/fpu_emulator.h.
+ * It would be nice to add some more fields for emulator statistics,
+ * the additional information is private to the FPU emulator for now.
+ * See arch/mips/include/asm/fpu_emulator.h.
*/
struct mips_fpu_struct {
- fpureg_t fpr[NUM_FPU_REGS];
+ union fpureg fpr[NUM_FPU_REGS];
unsigned int fcr31;
+ unsigned int msacsr;
};
#define NUM_DSP_REGS 6
@@ -112,8 +146,8 @@ struct mips_fpu_struct {
typedef __u32 dspreg_t;
struct mips_dsp_state {
- dspreg_t dspr[NUM_DSP_REGS];
- unsigned int dspcontrol;
+ dspreg_t dspr[NUM_DSP_REGS];
+ unsigned int dspcontrol;
};
#define INIT_CPUMASK { \
@@ -133,58 +167,71 @@ union mips_watch_reg_state {
struct mips3264_watch_reg_state mips3264;
};
-#ifdef CONFIG_CPU_CAVIUM_OCTEON
+#if defined(CONFIG_CPU_CAVIUM_OCTEON)
struct octeon_cop2_state {
/* DMFC2 rt, 0x0201 */
- unsigned long cop2_crc_iv;
+ unsigned long cop2_crc_iv;
/* DMFC2 rt, 0x0202 (Set with DMTC2 rt, 0x1202) */
- unsigned long cop2_crc_length;
+ unsigned long cop2_crc_length;
/* DMFC2 rt, 0x0200 (set with DMTC2 rt, 0x4200) */
- unsigned long cop2_crc_poly;
+ unsigned long cop2_crc_poly;
/* DMFC2 rt, 0x0402; DMFC2 rt, 0x040A */
- unsigned long cop2_llm_dat[2];
+ unsigned long cop2_llm_dat[2];
/* DMFC2 rt, 0x0084 */
- unsigned long cop2_3des_iv;
+ unsigned long cop2_3des_iv;
/* DMFC2 rt, 0x0080; DMFC2 rt, 0x0081; DMFC2 rt, 0x0082 */
- unsigned long cop2_3des_key[3];
+ unsigned long cop2_3des_key[3];
/* DMFC2 rt, 0x0088 (Set with DMTC2 rt, 0x0098) */
- unsigned long cop2_3des_result;
+ unsigned long cop2_3des_result;
/* DMFC2 rt, 0x0111 (FIXME: Read Pass1 Errata) */
- unsigned long cop2_aes_inp0;
+ unsigned long cop2_aes_inp0;
/* DMFC2 rt, 0x0102; DMFC2 rt, 0x0103 */
- unsigned long cop2_aes_iv[2];
+ unsigned long cop2_aes_iv[2];
/* DMFC2 rt, 0x0104; DMFC2 rt, 0x0105; DMFC2 rt, 0x0106; DMFC2
* rt, 0x0107 */
- unsigned long cop2_aes_key[4];
+ unsigned long cop2_aes_key[4];
/* DMFC2 rt, 0x0110 */
- unsigned long cop2_aes_keylen;
+ unsigned long cop2_aes_keylen;
/* DMFC2 rt, 0x0100; DMFC2 rt, 0x0101 */
- unsigned long cop2_aes_result[2];
+ unsigned long cop2_aes_result[2];
/* DMFC2 rt, 0x0240; DMFC2 rt, 0x0241; DMFC2 rt, 0x0242; DMFC2
* rt, 0x0243; DMFC2 rt, 0x0244; DMFC2 rt, 0x0245; DMFC2 rt,
* 0x0246; DMFC2 rt, 0x0247; DMFC2 rt, 0x0248; DMFC2 rt,
* 0x0249; DMFC2 rt, 0x024A; DMFC2 rt, 0x024B; DMFC2 rt,
* 0x024C; DMFC2 rt, 0x024D; DMFC2 rt, 0x024E - Pass2 */
- unsigned long cop2_hsh_datw[15];
+ unsigned long cop2_hsh_datw[15];
/* DMFC2 rt, 0x0250; DMFC2 rt, 0x0251; DMFC2 rt, 0x0252; DMFC2
* rt, 0x0253; DMFC2 rt, 0x0254; DMFC2 rt, 0x0255; DMFC2 rt,
* 0x0256; DMFC2 rt, 0x0257 - Pass2 */
- unsigned long cop2_hsh_ivw[8];
+ unsigned long cop2_hsh_ivw[8];
/* DMFC2 rt, 0x0258; DMFC2 rt, 0x0259 - Pass2 */
- unsigned long cop2_gfm_mult[2];
+ unsigned long cop2_gfm_mult[2];
/* DMFC2 rt, 0x025E - Pass2 */
- unsigned long cop2_gfm_poly;
+ unsigned long cop2_gfm_poly;
/* DMFC2 rt, 0x025A; DMFC2 rt, 0x025B - Pass2 */
- unsigned long cop2_gfm_result[2];
+ unsigned long cop2_gfm_result[2];
};
-#define INIT_OCTEON_COP2 {0,}
+#define COP2_INIT \
+ .cp2 = {0,},
struct octeon_cvmseg_state {
unsigned long cvmseg[CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE]
[cpu_dcache_line_size() / sizeof(unsigned long)];
};
+#elif defined(CONFIG_CPU_XLP)
+struct nlm_cop2_state {
+ u64 rx[4];
+ u64 tx[4];
+ u32 tx_msg_status;
+ u32 rx_msg_status;
+};
+
+#define COP2_INIT \
+ .cp2 = {{0}, {0}, 0, 0},
+#else
+#define COP2_INIT
#endif
typedef struct {
@@ -227,8 +274,11 @@ struct thread_struct {
unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */
unsigned long error_code;
#ifdef CONFIG_CPU_CAVIUM_OCTEON
- struct octeon_cop2_state cp2 __attribute__ ((__aligned__(128)));
- struct octeon_cvmseg_state cvmseg __attribute__ ((__aligned__(128)));
+ struct octeon_cop2_state cp2 __attribute__ ((__aligned__(128)));
+ struct octeon_cvmseg_state cvmseg __attribute__ ((__aligned__(128)));
+#endif
+#ifdef CONFIG_CPU_XLP
+ struct nlm_cop2_state cp2;
#endif
struct mips_abi *abi;
};
@@ -241,17 +291,10 @@ struct thread_struct {
#define FPAFF_INIT
#endif /* CONFIG_MIPS_MT_FPAFF */
-#ifdef CONFIG_CPU_CAVIUM_OCTEON
-#define OCTEON_INIT \
- .cp2 = INIT_OCTEON_COP2,
-#else
-#define OCTEON_INIT
-#endif /* CONFIG_CPU_CAVIUM_OCTEON */
-
#define INIT_THREAD { \
- /* \
- * Saved main processor registers \
- */ \
+ /* \
+ * Saved main processor registers \
+ */ \
.reg16 = 0, \
.reg17 = 0, \
.reg18 = 0, \
@@ -271,8 +314,9 @@ struct thread_struct {
* Saved FPU/FPU emulator stuff \
*/ \
.fpu = { \
- .fpr = {0,}, \
+ .fpr = {{{0,},},}, \
.fcr31 = 0, \
+ .msacsr = 0, \
}, \
/* \
* FPU affinity state (null if not FPAFF) \
@@ -296,9 +340,9 @@ struct thread_struct {
.cp0_baduaddr = 0, \
.error_code = 0, \
/* \
- * Cavium Octeon specifics (null if not Octeon) \
+ * Platform specific cop2 registers(null if no COP2) \
*/ \
- OCTEON_INIT \
+ COP2_INIT \
}
struct task_struct;
@@ -332,7 +376,7 @@ unsigned long get_wchan(struct task_struct *p);
* aborts compilation on some CPUs. It's simply not possible to unwind
* some CPU's stackframes.
*
- * __builtin_return_address works only for non-leaf functions. We avoid the
+ * __builtin_return_address works only for non-leaf functions. We avoid the
* overhead of a function call by forcing the compiler to save the return
* address register on the stack.
*/
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 21:55:26 +0000