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-rw-r--r--arch/tile/include/arch/spr_def.h85
-rw-r--r--arch/tile/include/arch/spr_def_32.h39
-rw-r--r--arch/tile/include/asm/irqflags.h64
-rw-r--r--arch/tile/include/asm/page.h27
-rw-r--r--arch/tile/include/asm/processor.h11
-rw-r--r--arch/tile/include/asm/ptrace.h4
-rw-r--r--arch/tile/include/asm/system.h2
-rw-r--r--arch/tile/include/hv/hypervisor.h30
8 files changed, 197 insertions, 65 deletions
diff --git a/arch/tile/include/arch/spr_def.h b/arch/tile/include/arch/spr_def.h
index c8fdbd9a45e6..442fcba0d122 100644
--- a/arch/tile/include/arch/spr_def.h
+++ b/arch/tile/include/arch/spr_def.h
@@ -12,8 +12,93 @@
* more details.
*/
+/*
+ * In addition to including the proper base SPR definition file, depending
+ * on machine architecture, this file defines several macros which allow
+ * kernel code to use protection-level dependent SPRs without worrying
+ * about which PL it's running at. In these macros, the PL that the SPR
+ * or interrupt number applies to is replaced by K.
+ */
+
+#if CONFIG_KERNEL_PL != 1 && CONFIG_KERNEL_PL != 2
+#error CONFIG_KERNEL_PL must be 1 or 2
+#endif
+
+/* Concatenate 4 strings. */
+#define __concat4(a, b, c, d) a ## b ## c ## d
+#define _concat4(a, b, c, d) __concat4(a, b, c, d)
+
#ifdef __tilegx__
#include <arch/spr_def_64.h>
+
+/* TILE-Gx dependent, protection-level dependent SPRs. */
+
+#define SPR_INTERRUPT_MASK_K \
+ _concat4(SPR_INTERRUPT_MASK_, CONFIG_KERNEL_PL,,)
+#define SPR_INTERRUPT_MASK_SET_K \
+ _concat4(SPR_INTERRUPT_MASK_SET_, CONFIG_KERNEL_PL,,)
+#define SPR_INTERRUPT_MASK_RESET_K \
+ _concat4(SPR_INTERRUPT_MASK_RESET_, CONFIG_KERNEL_PL,,)
+#define SPR_INTERRUPT_VECTOR_BASE_K \
+ _concat4(SPR_INTERRUPT_VECTOR_BASE_, CONFIG_KERNEL_PL,,)
+
+#define SPR_IPI_MASK_K \
+ _concat4(SPR_IPI_MASK_, CONFIG_KERNEL_PL,,)
+#define SPR_IPI_MASK_RESET_K \
+ _concat4(SPR_IPI_MASK_RESET_, CONFIG_KERNEL_PL,,)
+#define SPR_IPI_MASK_SET_K \
+ _concat4(SPR_IPI_MASK_SET_, CONFIG_KERNEL_PL,,)
+#define SPR_IPI_EVENT_K \
+ _concat4(SPR_IPI_EVENT_, CONFIG_KERNEL_PL,,)
+#define SPR_IPI_EVENT_RESET_K \
+ _concat4(SPR_IPI_EVENT_RESET_, CONFIG_KERNEL_PL,,)
+#define SPR_IPI_MASK_SET_K \
+ _concat4(SPR_IPI_MASK_SET_, CONFIG_KERNEL_PL,,)
+#define INT_IPI_K \
+ _concat4(INT_IPI_, CONFIG_KERNEL_PL,,)
+
+#define SPR_SINGLE_STEP_CONTROL_K \
+ _concat4(SPR_SINGLE_STEP_CONTROL_, CONFIG_KERNEL_PL,,)
+#define SPR_SINGLE_STEP_EN_K_K \
+ _concat4(SPR_SINGLE_STEP_EN_, CONFIG_KERNEL_PL, _, CONFIG_KERNEL_PL)
+#define INT_SINGLE_STEP_K \
+ _concat4(INT_SINGLE_STEP_, CONFIG_KERNEL_PL,,)
+
#else
#include <arch/spr_def_32.h>
+
+/* TILEPro dependent, protection-level dependent SPRs. */
+
+#define SPR_INTERRUPT_MASK_K_0 \
+ _concat4(SPR_INTERRUPT_MASK_, CONFIG_KERNEL_PL, _0,)
+#define SPR_INTERRUPT_MASK_K_1 \
+ _concat4(SPR_INTERRUPT_MASK_, CONFIG_KERNEL_PL, _1,)
+#define SPR_INTERRUPT_MASK_SET_K_0 \
+ _concat4(SPR_INTERRUPT_MASK_SET_, CONFIG_KERNEL_PL, _0,)
+#define SPR_INTERRUPT_MASK_SET_K_1 \
+ _concat4(SPR_INTERRUPT_MASK_SET_, CONFIG_KERNEL_PL, _1,)
+#define SPR_INTERRUPT_MASK_RESET_K_0 \
+ _concat4(SPR_INTERRUPT_MASK_RESET_, CONFIG_KERNEL_PL, _0,)
+#define SPR_INTERRUPT_MASK_RESET_K_1 \
+ _concat4(SPR_INTERRUPT_MASK_RESET_, CONFIG_KERNEL_PL, _1,)
+
#endif
+
+/* Generic protection-level dependent SPRs. */
+
+#define SPR_SYSTEM_SAVE_K_0 \
+ _concat4(SPR_SYSTEM_SAVE_, CONFIG_KERNEL_PL, _0,)
+#define SPR_SYSTEM_SAVE_K_1 \
+ _concat4(SPR_SYSTEM_SAVE_, CONFIG_KERNEL_PL, _1,)
+#define SPR_SYSTEM_SAVE_K_2 \
+ _concat4(SPR_SYSTEM_SAVE_, CONFIG_KERNEL_PL, _2,)
+#define SPR_SYSTEM_SAVE_K_3 \
+ _concat4(SPR_SYSTEM_SAVE_, CONFIG_KERNEL_PL, _3,)
+#define SPR_EX_CONTEXT_K_0 \
+ _concat4(SPR_EX_CONTEXT_, CONFIG_KERNEL_PL, _0,)
+#define SPR_EX_CONTEXT_K_1 \
+ _concat4(SPR_EX_CONTEXT_, CONFIG_KERNEL_PL, _1,)
+#define SPR_INTCTRL_K_STATUS \
+ _concat4(SPR_INTCTRL_, CONFIG_KERNEL_PL, _STATUS,)
+#define INT_INTCTRL_K \
+ _concat4(INT_INTCTRL_, CONFIG_KERNEL_PL,,)
diff --git a/arch/tile/include/arch/spr_def_32.h b/arch/tile/include/arch/spr_def_32.h
index b4fc06864df6..bbc1f4c924ee 100644
--- a/arch/tile/include/arch/spr_def_32.h
+++ b/arch/tile/include/arch/spr_def_32.h
@@ -56,58 +56,93 @@
#define SPR_EX_CONTEXT_1_1__ICS_SHIFT 2
#define SPR_EX_CONTEXT_1_1__ICS_RMASK 0x1
#define SPR_EX_CONTEXT_1_1__ICS_MASK 0x4
+#define SPR_EX_CONTEXT_2_0 0x4605
+#define SPR_EX_CONTEXT_2_1 0x4606
+#define SPR_EX_CONTEXT_2_1__PL_SHIFT 0
+#define SPR_EX_CONTEXT_2_1__PL_RMASK 0x3
+#define SPR_EX_CONTEXT_2_1__PL_MASK 0x3
+#define SPR_EX_CONTEXT_2_1__ICS_SHIFT 2
+#define SPR_EX_CONTEXT_2_1__ICS_RMASK 0x1
+#define SPR_EX_CONTEXT_2_1__ICS_MASK 0x4
#define SPR_FAIL 0x4e09
#define SPR_INTCTRL_0_STATUS 0x4a07
#define SPR_INTCTRL_1_STATUS 0x4807
+#define SPR_INTCTRL_2_STATUS 0x4607
#define SPR_INTERRUPT_CRITICAL_SECTION 0x4e0a
#define SPR_INTERRUPT_MASK_0_0 0x4a08
#define SPR_INTERRUPT_MASK_0_1 0x4a09
#define SPR_INTERRUPT_MASK_1_0 0x4809
#define SPR_INTERRUPT_MASK_1_1 0x480a
+#define SPR_INTERRUPT_MASK_2_0 0x4608
+#define SPR_INTERRUPT_MASK_2_1 0x4609
#define SPR_INTERRUPT_MASK_RESET_0_0 0x4a0a
#define SPR_INTERRUPT_MASK_RESET_0_1 0x4a0b
#define SPR_INTERRUPT_MASK_RESET_1_0 0x480b
#define SPR_INTERRUPT_MASK_RESET_1_1 0x480c
+#define SPR_INTERRUPT_MASK_RESET_2_0 0x460a
+#define SPR_INTERRUPT_MASK_RESET_2_1 0x460b
#define SPR_INTERRUPT_MASK_SET_0_0 0x4a0c
#define SPR_INTERRUPT_MASK_SET_0_1 0x4a0d
#define SPR_INTERRUPT_MASK_SET_1_0 0x480d
#define SPR_INTERRUPT_MASK_SET_1_1 0x480e
+#define SPR_INTERRUPT_MASK_SET_2_0 0x460c
+#define SPR_INTERRUPT_MASK_SET_2_1 0x460d
#define SPR_MPL_DMA_CPL_SET_0 0x5800
#define SPR_MPL_DMA_CPL_SET_1 0x5801
+#define SPR_MPL_DMA_CPL_SET_2 0x5802
#define SPR_MPL_DMA_NOTIFY_SET_0 0x3800
#define SPR_MPL_DMA_NOTIFY_SET_1 0x3801
+#define SPR_MPL_DMA_NOTIFY_SET_2 0x3802
#define SPR_MPL_INTCTRL_0_SET_0 0x4a00
#define SPR_MPL_INTCTRL_0_SET_1 0x4a01
+#define SPR_MPL_INTCTRL_0_SET_2 0x4a02
#define SPR_MPL_INTCTRL_1_SET_0 0x4800
#define SPR_MPL_INTCTRL_1_SET_1 0x4801
+#define SPR_MPL_INTCTRL_1_SET_2 0x4802
+#define SPR_MPL_INTCTRL_2_SET_0 0x4600
+#define SPR_MPL_INTCTRL_2_SET_1 0x4601
+#define SPR_MPL_INTCTRL_2_SET_2 0x4602
#define SPR_MPL_SN_ACCESS_SET_0 0x0800
#define SPR_MPL_SN_ACCESS_SET_1 0x0801
+#define SPR_MPL_SN_ACCESS_SET_2 0x0802
#define SPR_MPL_SN_CPL_SET_0 0x5a00
#define SPR_MPL_SN_CPL_SET_1 0x5a01
+#define SPR_MPL_SN_CPL_SET_2 0x5a02
#define SPR_MPL_SN_FIREWALL_SET_0 0x2c00
#define SPR_MPL_SN_FIREWALL_SET_1 0x2c01
+#define SPR_MPL_SN_FIREWALL_SET_2 0x2c02
#define SPR_MPL_SN_NOTIFY_SET_0 0x2a00
#define SPR_MPL_SN_NOTIFY_SET_1 0x2a01
+#define SPR_MPL_SN_NOTIFY_SET_2 0x2a02
#define SPR_MPL_UDN_ACCESS_SET_0 0x0c00
#define SPR_MPL_UDN_ACCESS_SET_1 0x0c01
+#define SPR_MPL_UDN_ACCESS_SET_2 0x0c02
#define SPR_MPL_UDN_AVAIL_SET_0 0x4000
#define SPR_MPL_UDN_AVAIL_SET_1 0x4001
+#define SPR_MPL_UDN_AVAIL_SET_2 0x4002
#define SPR_MPL_UDN_CA_SET_0 0x3c00
#define SPR_MPL_UDN_CA_SET_1 0x3c01
+#define SPR_MPL_UDN_CA_SET_2 0x3c02
#define SPR_MPL_UDN_COMPLETE_SET_0 0x1400
#define SPR_MPL_UDN_COMPLETE_SET_1 0x1401
+#define SPR_MPL_UDN_COMPLETE_SET_2 0x1402
#define SPR_MPL_UDN_FIREWALL_SET_0 0x3000
#define SPR_MPL_UDN_FIREWALL_SET_1 0x3001
+#define SPR_MPL_UDN_FIREWALL_SET_2 0x3002
#define SPR_MPL_UDN_REFILL_SET_0 0x1000
#define SPR_MPL_UDN_REFILL_SET_1 0x1001
+#define SPR_MPL_UDN_REFILL_SET_2 0x1002
#define SPR_MPL_UDN_TIMER_SET_0 0x3600
#define SPR_MPL_UDN_TIMER_SET_1 0x3601
+#define SPR_MPL_UDN_TIMER_SET_2 0x3602
#define SPR_MPL_WORLD_ACCESS_SET_0 0x4e00
#define SPR_MPL_WORLD_ACCESS_SET_1 0x4e01
+#define SPR_MPL_WORLD_ACCESS_SET_2 0x4e02
#define SPR_PASS 0x4e0b
#define SPR_PERF_COUNT_0 0x4205
#define SPR_PERF_COUNT_1 0x4206
#define SPR_PERF_COUNT_CTL 0x4207
+#define SPR_PERF_COUNT_DN_CTL 0x4210
#define SPR_PERF_COUNT_STS 0x4208
#define SPR_PROC_STATUS 0x4f00
#define SPR_SIM_CONTROL 0x4e0c
@@ -124,6 +159,10 @@
#define SPR_SYSTEM_SAVE_1_1 0x4901
#define SPR_SYSTEM_SAVE_1_2 0x4902
#define SPR_SYSTEM_SAVE_1_3 0x4903
+#define SPR_SYSTEM_SAVE_2_0 0x4700
+#define SPR_SYSTEM_SAVE_2_1 0x4701
+#define SPR_SYSTEM_SAVE_2_2 0x4702
+#define SPR_SYSTEM_SAVE_2_3 0x4703
#define SPR_TILE_COORD 0x4c17
#define SPR_TILE_RTF_HWM 0x4e10
#define SPR_TILE_TIMER_CONTROL 0x3205
diff --git a/arch/tile/include/asm/irqflags.h b/arch/tile/include/asm/irqflags.h
index 45cf67c2f286..6ebdd7d1e67a 100644
--- a/arch/tile/include/asm/irqflags.h
+++ b/arch/tile/include/asm/irqflags.h
@@ -47,53 +47,53 @@
int __n = (n); \
int __mask = 1 << (__n & 0x1f); \
if (__n < 32) \
- __insn_mtspr(SPR_INTERRUPT_MASK_SET_1_0, __mask); \
+ __insn_mtspr(SPR_INTERRUPT_MASK_SET_K_0, __mask); \
else \
- __insn_mtspr(SPR_INTERRUPT_MASK_SET_1_1, __mask); \
+ __insn_mtspr(SPR_INTERRUPT_MASK_SET_K_1, __mask); \
} while (0)
#define interrupt_mask_reset(n) do { \
int __n = (n); \
int __mask = 1 << (__n & 0x1f); \
if (__n < 32) \
- __insn_mtspr(SPR_INTERRUPT_MASK_RESET_1_0, __mask); \
+ __insn_mtspr(SPR_INTERRUPT_MASK_RESET_K_0, __mask); \
else \
- __insn_mtspr(SPR_INTERRUPT_MASK_RESET_1_1, __mask); \
+ __insn_mtspr(SPR_INTERRUPT_MASK_RESET_K_1, __mask); \
} while (0)
#define interrupt_mask_check(n) ({ \
int __n = (n); \
(((__n < 32) ? \
- __insn_mfspr(SPR_INTERRUPT_MASK_1_0) : \
- __insn_mfspr(SPR_INTERRUPT_MASK_1_1)) \
+ __insn_mfspr(SPR_INTERRUPT_MASK_K_0) : \
+ __insn_mfspr(SPR_INTERRUPT_MASK_K_1)) \
>> (__n & 0x1f)) & 1; \
})
#define interrupt_mask_set_mask(mask) do { \
unsigned long long __m = (mask); \
- __insn_mtspr(SPR_INTERRUPT_MASK_SET_1_0, (unsigned long)(__m)); \
- __insn_mtspr(SPR_INTERRUPT_MASK_SET_1_1, (unsigned long)(__m>>32)); \
+ __insn_mtspr(SPR_INTERRUPT_MASK_SET_K_0, (unsigned long)(__m)); \
+ __insn_mtspr(SPR_INTERRUPT_MASK_SET_K_1, (unsigned long)(__m>>32)); \
} while (0)
#define interrupt_mask_reset_mask(mask) do { \
unsigned long long __m = (mask); \
- __insn_mtspr(SPR_INTERRUPT_MASK_RESET_1_0, (unsigned long)(__m)); \
- __insn_mtspr(SPR_INTERRUPT_MASK_RESET_1_1, (unsigned long)(__m>>32)); \
+ __insn_mtspr(SPR_INTERRUPT_MASK_RESET_K_0, (unsigned long)(__m)); \
+ __insn_mtspr(SPR_INTERRUPT_MASK_RESET_K_1, (unsigned long)(__m>>32)); \
} while (0)
#else
#define interrupt_mask_set(n) \
- __insn_mtspr(SPR_INTERRUPT_MASK_SET_1, (1UL << (n)))
+ __insn_mtspr(SPR_INTERRUPT_MASK_SET_K, (1UL << (n)))
#define interrupt_mask_reset(n) \
- __insn_mtspr(SPR_INTERRUPT_MASK_RESET_1, (1UL << (n)))
+ __insn_mtspr(SPR_INTERRUPT_MASK_RESET_K, (1UL << (n)))
#define interrupt_mask_check(n) \
- ((__insn_mfspr(SPR_INTERRUPT_MASK_1) >> (n)) & 1)
+ ((__insn_mfspr(SPR_INTERRUPT_MASK_K) >> (n)) & 1)
#define interrupt_mask_set_mask(mask) \
- __insn_mtspr(SPR_INTERRUPT_MASK_SET_1, (mask))
+ __insn_mtspr(SPR_INTERRUPT_MASK_SET_K, (mask))
#define interrupt_mask_reset_mask(mask) \
- __insn_mtspr(SPR_INTERRUPT_MASK_RESET_1, (mask))
+ __insn_mtspr(SPR_INTERRUPT_MASK_RESET_K, (mask))
#endif
/*
* The set of interrupts we want active if irqs are enabled.
* Note that in particular, the tile timer interrupt comes and goes
* from this set, since we have no other way to turn off the timer.
- * Likewise, INTCTRL_1 is removed and re-added during device
+ * Likewise, INTCTRL_K is removed and re-added during device
* interrupts, as is the the hardwall UDN_FIREWALL interrupt.
* We use a low bit (MEM_ERROR) as our sentinel value and make sure it
* is always claimed as an "active interrupt" so we can query that bit
@@ -168,14 +168,14 @@ DECLARE_PER_CPU(unsigned long long, interrupts_enabled_mask);
/* Return 0 or 1 to indicate whether interrupts are currently disabled. */
#define IRQS_DISABLED(tmp) \
- mfspr tmp, INTERRUPT_MASK_1; \
+ mfspr tmp, SPR_INTERRUPT_MASK_K; \
andi tmp, tmp, 1
/* Load up a pointer to &interrupts_enabled_mask. */
#define GET_INTERRUPTS_ENABLED_MASK_PTR(reg) \
- moveli reg, hw2_last(interrupts_enabled_mask); \
- shl16insli reg, reg, hw1(interrupts_enabled_mask); \
- shl16insli reg, reg, hw0(interrupts_enabled_mask); \
+ moveli reg, hw2_last(interrupts_enabled_mask); \
+ shl16insli reg, reg, hw1(interrupts_enabled_mask); \
+ shl16insli reg, reg, hw0(interrupts_enabled_mask); \
add reg, reg, tp
/* Disable interrupts. */
@@ -183,18 +183,18 @@ DECLARE_PER_CPU(unsigned long long, interrupts_enabled_mask);
moveli tmp0, hw2_last(LINUX_MASKABLE_INTERRUPTS); \
shl16insli tmp0, tmp0, hw1(LINUX_MASKABLE_INTERRUPTS); \
shl16insli tmp0, tmp0, hw0(LINUX_MASKABLE_INTERRUPTS); \
- mtspr INTERRUPT_MASK_SET_1, tmp0
+ mtspr SPR_INTERRUPT_MASK_SET_K, tmp0
/* Disable ALL synchronous interrupts (used by NMI entry). */
#define IRQ_DISABLE_ALL(tmp) \
movei tmp, -1; \
- mtspr INTERRUPT_MASK_SET_1, tmp
+ mtspr SPR_INTERRUPT_MASK_SET_K, tmp
/* Enable interrupts. */
#define IRQ_ENABLE(tmp0, tmp1) \
GET_INTERRUPTS_ENABLED_MASK_PTR(tmp0); \
ld tmp0, tmp0; \
- mtspr INTERRUPT_MASK_RESET_1, tmp0
+ mtspr SPR_INTERRUPT_MASK_RESET_K, tmp0
#else /* !__tilegx__ */
@@ -208,14 +208,14 @@ DECLARE_PER_CPU(unsigned long long, interrupts_enabled_mask);
* (making the original code's write of the "high" mask word idempotent).
*/
#define IRQS_DISABLED(tmp) \
- mfspr tmp, INTERRUPT_MASK_1_0; \
+ mfspr tmp, SPR_INTERRUPT_MASK_K_0; \
shri tmp, tmp, INT_MEM_ERROR; \
andi tmp, tmp, 1
/* Load up a pointer to &interrupts_enabled_mask. */
#define GET_INTERRUPTS_ENABLED_MASK_PTR(reg) \
- moveli reg, lo16(interrupts_enabled_mask); \
- auli reg, reg, ha16(interrupts_enabled_mask);\
+ moveli reg, lo16(interrupts_enabled_mask); \
+ auli reg, reg, ha16(interrupts_enabled_mask); \
add reg, reg, tp
/* Disable interrupts. */
@@ -225,16 +225,16 @@ DECLARE_PER_CPU(unsigned long long, interrupts_enabled_mask);
moveli tmp1, lo16(LINUX_MASKABLE_INTERRUPTS) \
}; \
{ \
- mtspr INTERRUPT_MASK_SET_1_0, tmp0; \
+ mtspr SPR_INTERRUPT_MASK_SET_K_0, tmp0; \
auli tmp1, tmp1, ha16(LINUX_MASKABLE_INTERRUPTS) \
}; \
- mtspr INTERRUPT_MASK_SET_1_1, tmp1
+ mtspr SPR_INTERRUPT_MASK_SET_K_1, tmp1
/* Disable ALL synchronous interrupts (used by NMI entry). */
#define IRQ_DISABLE_ALL(tmp) \
movei tmp, -1; \
- mtspr INTERRUPT_MASK_SET_1_0, tmp; \
- mtspr INTERRUPT_MASK_SET_1_1, tmp
+ mtspr SPR_INTERRUPT_MASK_SET_K_0, tmp; \
+ mtspr SPR_INTERRUPT_MASK_SET_K_1, tmp
/* Enable interrupts. */
#define IRQ_ENABLE(tmp0, tmp1) \
@@ -244,8 +244,8 @@ DECLARE_PER_CPU(unsigned long long, interrupts_enabled_mask);
addi tmp1, tmp0, 4 \
}; \
lw tmp1, tmp1; \
- mtspr INTERRUPT_MASK_RESET_1_0, tmp0; \
- mtspr INTERRUPT_MASK_RESET_1_1, tmp1
+ mtspr SPR_INTERRUPT_MASK_RESET_K_0, tmp0; \
+ mtspr SPR_INTERRUPT_MASK_RESET_K_1, tmp1
#endif
/*
diff --git a/arch/tile/include/asm/page.h b/arch/tile/include/asm/page.h
index 7d90641cf18d..7979a45430d3 100644
--- a/arch/tile/include/asm/page.h
+++ b/arch/tile/include/asm/page.h
@@ -199,17 +199,17 @@ static inline __attribute_const__ int get_order(unsigned long size)
* If you want more physical memory than this then see the CONFIG_HIGHMEM
* option in the kernel configuration.
*
- * The top two 16MB chunks in the table below (VIRT and HV) are
- * unavailable to Linux. Since the kernel interrupt vectors must live
- * at 0xfd000000, we map all of the bottom of RAM at this address with
- * a huge page table entry to minimize its ITLB footprint (as well as
- * at PAGE_OFFSET). The last architected requirement is that user
- * interrupt vectors live at 0xfc000000, so we make that range of
- * memory available to user processes. The remaining regions are sized
- * as shown; after the first four addresses, we show "typical" values,
- * since the actual addresses depend on kernel #defines.
+ * The top 16MB chunk in the table below is unavailable to Linux. Since
+ * the kernel interrupt vectors must live at ether 0xfe000000 or 0xfd000000
+ * (depending on whether the kernel is at PL2 or Pl1), we map all of the
+ * bottom of RAM at this address with a huge page table entry to minimize
+ * its ITLB footprint (as well as at PAGE_OFFSET). The last architected
+ * requirement is that user interrupt vectors live at 0xfc000000, so we
+ * make that range of memory available to user processes. The remaining
+ * regions are sized as shown; the first four addresses use the PL 1
+ * values, and after that, we show "typical" values, since the actual
+ * addresses depend on kernel #defines.
*
- * MEM_VIRT_INTRPT 0xff000000
* MEM_HV_INTRPT 0xfe000000
* MEM_SV_INTRPT (kernel code) 0xfd000000
* MEM_USER_INTRPT (user vector) 0xfc000000
@@ -221,9 +221,14 @@ static inline __attribute_const__ int get_order(unsigned long size)
*/
#define MEM_USER_INTRPT _AC(0xfc000000, UL)
+#if CONFIG_KERNEL_PL == 1
#define MEM_SV_INTRPT _AC(0xfd000000, UL)
#define MEM_HV_INTRPT _AC(0xfe000000, UL)
-#define MEM_VIRT_INTRPT _AC(0xff000000, UL)
+#else
+#define MEM_GUEST_INTRPT _AC(0xfd000000, UL)
+#define MEM_SV_INTRPT _AC(0xfe000000, UL)
+#define MEM_HV_INTRPT _AC(0xff000000, UL)
+#endif
#define INTRPT_SIZE 0x4000
diff --git a/arch/tile/include/asm/processor.h b/arch/tile/include/asm/processor.h
index ccd5f8425688..1747ff3946b2 100644
--- a/arch/tile/include/asm/processor.h
+++ b/arch/tile/include/asm/processor.h
@@ -328,18 +328,21 @@ extern int kdata_huge;
* Note that assembly code assumes that USER_PL is zero.
*/
#define USER_PL 0
-#define KERNEL_PL 1
+#if CONFIG_KERNEL_PL == 2
+#define GUEST_PL 1
+#endif
+#define KERNEL_PL CONFIG_KERNEL_PL
-/* SYSTEM_SAVE_1_0 holds the current cpu number ORed with ksp0. */
+/* SYSTEM_SAVE_K_0 holds the current cpu number ORed with ksp0. */
#define CPU_LOG_MASK_VALUE 12
#define CPU_MASK_VALUE ((1 << CPU_LOG_MASK_VALUE) - 1)
#if CONFIG_NR_CPUS > CPU_MASK_VALUE
# error Too many cpus!
#endif
#define raw_smp_processor_id() \
- ((int)__insn_mfspr(SPR_SYSTEM_SAVE_1_0) & CPU_MASK_VALUE)
+ ((int)__insn_mfspr(SPR_SYSTEM_SAVE_K_0) & CPU_MASK_VALUE)
#define get_current_ksp0() \
- (__insn_mfspr(SPR_SYSTEM_SAVE_1_0) & ~CPU_MASK_VALUE)
+ (__insn_mfspr(SPR_SYSTEM_SAVE_K_0) & ~CPU_MASK_VALUE)
#define next_current_ksp0(task) ({ \
unsigned long __ksp0 = task_ksp0(task); \
int __cpu = raw_smp_processor_id(); \
diff --git a/arch/tile/include/asm/ptrace.h b/arch/tile/include/asm/ptrace.h
index 4a02bb073979..ac6d343129d3 100644
--- a/arch/tile/include/asm/ptrace.h
+++ b/arch/tile/include/asm/ptrace.h
@@ -62,8 +62,8 @@ struct pt_regs {
pt_reg_t lr; /* aliases regs[TREG_LR] */
/* Saved special registers. */
- pt_reg_t pc; /* stored in EX_CONTEXT_1_0 */
- pt_reg_t ex1; /* stored in EX_CONTEXT_1_1 (PL and ICS bit) */
+ pt_reg_t pc; /* stored in EX_CONTEXT_K_0 */
+ pt_reg_t ex1; /* stored in EX_CONTEXT_K_1 (PL and ICS bit) */
pt_reg_t faultnum; /* fault number (INT_SWINT_1 for syscall) */
pt_reg_t orig_r0; /* r0 at syscall entry, else zero */
pt_reg_t flags; /* flags (see below) */
diff --git a/arch/tile/include/asm/system.h b/arch/tile/include/asm/system.h
index fb7ff9574d76..5388850deeb2 100644
--- a/arch/tile/include/asm/system.h
+++ b/arch/tile/include/asm/system.h
@@ -164,7 +164,7 @@ extern struct task_struct *_switch_to(struct task_struct *prev,
/* Helper function for _switch_to(). */
extern struct task_struct *__switch_to(struct task_struct *prev,
struct task_struct *next,
- unsigned long new_system_save_1_0);
+ unsigned long new_system_save_k_0);
/* Address that switched-away from tasks are at. */
extern unsigned long get_switch_to_pc(void);
diff --git a/arch/tile/include/hv/hypervisor.h b/arch/tile/include/hv/hypervisor.h
index 9bd303a141b2..f672544cd4f9 100644
--- a/arch/tile/include/hv/hypervisor.h
+++ b/arch/tile/include/hv/hypervisor.h
@@ -1003,37 +1003,37 @@ int hv_console_write(HV_VirtAddr bytes, int len);
* when these occur in a client's interrupt critical section, they must
* be delivered through the downcall mechanism.
*
- * A downcall is initially delivered to the client as an INTCTRL_1
- * interrupt. Upon entry to the INTCTRL_1 vector, the client must
- * immediately invoke the hv_downcall_dispatch service. This service
- * will not return; instead it will cause one of the client's actual
- * downcall-handling interrupt vectors to be entered. The EX_CONTEXT
- * registers in the client will be set so that when the client irets,
- * it will return to the code which was interrupted by the INTCTRL_1
- * interrupt.
- *
- * Under some circumstances, the firing of INTCTRL_1 can race with
+ * A downcall is initially delivered to the client as an INTCTRL_CL
+ * interrupt, where CL is the client's PL. Upon entry to the INTCTRL_CL
+ * vector, the client must immediately invoke the hv_downcall_dispatch
+ * service. This service will not return; instead it will cause one of
+ * the client's actual downcall-handling interrupt vectors to be entered.
+ * The EX_CONTEXT registers in the client will be set so that when the
+ * client irets, it will return to the code which was interrupted by the
+ * INTCTRL_CL interrupt.
+ *
+ * Under some circumstances, the firing of INTCTRL_CL can race with
* the lowering of a device interrupt. In such a case, the
* hv_downcall_dispatch service may issue an iret instruction instead
* of entering one of the client's actual downcall-handling interrupt
* vectors. This will return execution to the location that was
- * interrupted by INTCTRL_1.
+ * interrupted by INTCTRL_CL.
*
* Any saving of registers should be done by the actual handling
- * vectors; no registers should be changed by the INTCTRL_1 handler.
+ * vectors; no registers should be changed by the INTCTRL_CL handler.
* In particular, the client should not use a jal instruction to invoke
* the hv_downcall_dispatch service, as that would overwrite the client's
* lr register. Note that the hv_downcall_dispatch service may overwrite
* one or more of the client's system save registers.
*
- * The client must not modify the INTCTRL_1_STATUS SPR. The hypervisor
+ * The client must not modify the INTCTRL_CL_STATUS SPR. The hypervisor
* will set this register to cause a downcall to happen, and will clear
* it when no further downcalls are pending.
*
- * When a downcall vector is entered, the INTCTRL_1 interrupt will be
+ * When a downcall vector is entered, the INTCTRL_CL interrupt will be
* masked. When the client is done processing a downcall, and is ready
* to accept another, it must unmask this interrupt; if more downcalls
- * are pending, this will cause the INTCTRL_1 vector to be reentered.
+ * are pending, this will cause the INTCTRL_CL vector to be reentered.
* Currently the following interrupt vectors can be entered through a
* downcall:
*
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 00:55:46 +0000