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@@ -52,3 +52,170 @@ extern unsigned int vced_count, vcei_count;
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#ifdef __KERNEL__
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#define STACK_TOP_MAX TASK_SIZE
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+#endif
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+
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+#define TASK_IS_32BIT_ADDR 1
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+
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+#endif
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+
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+#ifdef CONFIG_64BIT
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+/*
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+ * User space process size: 1TB. This is hardcoded into a few places,
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+ * so don't change it unless you know what you are doing. TASK_SIZE
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+ * is limited to 1TB by the R4000 architecture; R10000 and better can
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+ * support 16TB; the architectural reserve for future expansion is
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+ * 8192EB ...
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+ */
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+#define TASK_SIZE32 0x7fff8000UL
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+#define TASK_SIZE64 0x10000000000UL
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+#define TASK_SIZE (test_thread_flag(TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE64)
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+
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+#ifdef __KERNEL__
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+#define STACK_TOP_MAX TASK_SIZE64
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+#endif
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+
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+
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+#define TASK_SIZE_OF(tsk) \
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+ (test_tsk_thread_flag(tsk, TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE64)
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+
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+#define TASK_IS_32BIT_ADDR test_thread_flag(TIF_32BIT_ADDR)
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+
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+#endif
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+
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+#define STACK_TOP ((TASK_SIZE & PAGE_MASK) - SPECIAL_PAGES_SIZE)
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+
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+/*
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+ * This decides where the kernel will search for a free chunk of vm
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+ * space during mmap's.
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+ */
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+#define TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3)
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+
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+
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+#define NUM_FPU_REGS 32
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+
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+typedef __u64 fpureg_t;
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+
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+/*
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+ * It would be nice to add some more fields for emulator statistics, but there
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+ * are a number of fixed offsets in offset.h and elsewhere that would have to
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+ * be recalculated by hand. So the additional information will be private to
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+ * the FPU emulator for now. See asm-mips/fpu_emulator.h.
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+ */
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+
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+struct mips_fpu_struct {
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+ fpureg_t fpr[NUM_FPU_REGS];
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+ unsigned int fcr31;
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+};
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+
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+#define NUM_DSP_REGS 6
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+
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+typedef __u32 dspreg_t;
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+
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+struct mips_dsp_state {
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+ dspreg_t dspr[NUM_DSP_REGS];
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+ unsigned int dspcontrol;
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+};
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+
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+#define INIT_CPUMASK { \
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+ {0,} \
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+}
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+
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+struct mips3264_watch_reg_state {
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+ /* The width of watchlo is 32 in a 32 bit kernel and 64 in a
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+ 64 bit kernel. We use unsigned long as it has the same
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+ property. */
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+ unsigned long watchlo[NUM_WATCH_REGS];
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+ /* Only the mask and IRW bits from watchhi. */
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+ u16 watchhi[NUM_WATCH_REGS];
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+};
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+
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+union mips_watch_reg_state {
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+ struct mips3264_watch_reg_state mips3264;
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+};
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+
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+#ifdef CONFIG_CPU_CAVIUM_OCTEON
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+
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+struct octeon_cop2_state {
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+ /* DMFC2 rt, 0x0201 */
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+ unsigned long cop2_crc_iv;
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+ /* DMFC2 rt, 0x0202 (Set with DMTC2 rt, 0x1202) */
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+ unsigned long cop2_crc_length;
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+ /* DMFC2 rt, 0x0200 (set with DMTC2 rt, 0x4200) */
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+ unsigned long cop2_crc_poly;
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+ /* DMFC2 rt, 0x0402; DMFC2 rt, 0x040A */
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+ unsigned long cop2_llm_dat[2];
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+ /* DMFC2 rt, 0x0084 */
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+ unsigned long cop2_3des_iv;
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+ /* DMFC2 rt, 0x0080; DMFC2 rt, 0x0081; DMFC2 rt, 0x0082 */
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+ unsigned long cop2_3des_key[3];
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+ /* DMFC2 rt, 0x0088 (Set with DMTC2 rt, 0x0098) */
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+ unsigned long cop2_3des_result;
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+ /* DMFC2 rt, 0x0111 (FIXME: Read Pass1 Errata) */
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+ unsigned long cop2_aes_inp0;
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+ /* DMFC2 rt, 0x0102; DMFC2 rt, 0x0103 */
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+ unsigned long cop2_aes_iv[2];
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+ /* DMFC2 rt, 0x0104; DMFC2 rt, 0x0105; DMFC2 rt, 0x0106; DMFC2
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+ * rt, 0x0107 */
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+ unsigned long cop2_aes_key[4];
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+ /* DMFC2 rt, 0x0110 */
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+ unsigned long cop2_aes_keylen;
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+ /* DMFC2 rt, 0x0100; DMFC2 rt, 0x0101 */
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+ unsigned long cop2_aes_result[2];
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+ /* DMFC2 rt, 0x0240; DMFC2 rt, 0x0241; DMFC2 rt, 0x0242; DMFC2
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+ * rt, 0x0243; DMFC2 rt, 0x0244; DMFC2 rt, 0x0245; DMFC2 rt,
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+ * 0x0246; DMFC2 rt, 0x0247; DMFC2 rt, 0x0248; DMFC2 rt,
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+ * 0x0249; DMFC2 rt, 0x024A; DMFC2 rt, 0x024B; DMFC2 rt,
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+ * 0x024C; DMFC2 rt, 0x024D; DMFC2 rt, 0x024E - Pass2 */
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+ unsigned long cop2_hsh_datw[15];
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+ /* DMFC2 rt, 0x0250; DMFC2 rt, 0x0251; DMFC2 rt, 0x0252; DMFC2
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+ * rt, 0x0253; DMFC2 rt, 0x0254; DMFC2 rt, 0x0255; DMFC2 rt,
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+ * 0x0256; DMFC2 rt, 0x0257 - Pass2 */
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+ unsigned long cop2_hsh_ivw[8];
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+ /* DMFC2 rt, 0x0258; DMFC2 rt, 0x0259 - Pass2 */
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+ unsigned long cop2_gfm_mult[2];
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+ /* DMFC2 rt, 0x025E - Pass2 */
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+ unsigned long cop2_gfm_poly;
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+ /* DMFC2 rt, 0x025A; DMFC2 rt, 0x025B - Pass2 */
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+ unsigned long cop2_gfm_result[2];
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+};
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+#define INIT_OCTEON_COP2 {0,}
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+
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+struct octeon_cvmseg_state {
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+ unsigned long cvmseg[CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE]
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+ [cpu_dcache_line_size() / sizeof(unsigned long)];
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+};
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+
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+#endif
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+
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+typedef struct {
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+ unsigned long seg;
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+} mm_segment_t;
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+
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+#define ARCH_MIN_TASKALIGN 8
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+
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+struct mips_abi;
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+
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+/*
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+ * If you change thread_struct remember to change the #defines below too!
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+ */
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+struct thread_struct {
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+ /* Saved main processor registers. */
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+ unsigned long reg16;
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+ unsigned long reg17, reg18, reg19, reg20, reg21, reg22, reg23;
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+ unsigned long reg29, reg30, reg31;
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+
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+ /* Saved cp0 stuff. */
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+ unsigned long cp0_status;
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+
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+ /* Saved fpu/fpu emulator stuff. */
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+ struct mips_fpu_struct fpu;
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+#ifdef CONFIG_MIPS_MT_FPAFF
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+ /* Emulated instruction count */
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+ unsigned long emulated_fp;
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+ /* Saved per-thread scheduler affinity mask */
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+ cpumask_t user_cpus_allowed;
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+#endif /* CONFIG_MIPS_MT_FPAFF */
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+
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+ /* Saved state of the DSP ASE, if available. */
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+ struct mips_dsp_state dsp;
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+
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