diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-25 15:59:38 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-25 15:59:38 -0700 |
| commit | fa2af6e4fe0c4d2f8875d42625b25675e8584010 (patch) | |
| tree | ef9a92949858ab763aa1bfda7cb11a5f7b84d123 /arch/tile/include | |
| parent | 109b9b0408e5f1dd327a44f446841a9fbe0bcd83 (diff) | |
| parent | 1fcb78e9da714d96f65edd37b29dae3b1f7df508 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
Pull tile updates from Chris Metcalf:
"These changes cover a range of new arch/tile features and
optimizations. They've been through LKML review and on linux-next for
a month or so. There's also one bug-fix that just missed 3.4, which
I've marked for stable."
Fixed up trivial conflict in arch/tile/Kconfig (new added tile Kconfig
entries clashing with the generic timer/clockevents changes).
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
tile: default to tilegx_defconfig for ARCH=tile
tile: fix bug where fls(0) was not returning 0
arch/tile: mark TILEGX as not EXPERIMENTAL
tile/mm/fault.c: Port OOM changes to handle_page_fault
arch/tile: add descriptive text if the kernel reports a bad trap
arch/tile: allow querying cpu module information from the hypervisor
arch/tile: fix hardwall for tilegx and generalize for idn and ipi
arch/tile: support multiple huge page sizes dynamically
mm: add new arch_make_huge_pte() method for tile support
arch/tile: support kexec() for tilegx
arch/tile: support <asm/cachectl.h> header for cacheflush() syscall
arch/tile: Allow tilegx to build with either 16K or 64K page size
arch/tile: optimize get_user/put_user and friends
arch/tile: support building big-endian kernel
arch/tile: allow building Linux with transparent huge pages enabled
arch/tile: use interrupt critical sections less
Diffstat (limited to 'arch/tile/include')
30 files changed, 994 insertions, 395 deletions
diff --git a/arch/tile/include/arch/spr_def_32.h b/arch/tile/include/arch/spr_def_32.h index bbc1f4c924e..78bbce2fb19 100644 --- a/arch/tile/include/arch/spr_def_32.h +++ b/arch/tile/include/arch/spr_def_32.h @@ -65,6 +65,31 @@ #define SPR_EX_CONTEXT_2_1__ICS_RMASK 0x1 #define SPR_EX_CONTEXT_2_1__ICS_MASK 0x4 #define SPR_FAIL 0x4e09 +#define SPR_IDN_AVAIL_EN 0x3e05 +#define SPR_IDN_CA_DATA 0x0b00 +#define SPR_IDN_DATA_AVAIL 0x0b03 +#define SPR_IDN_DEADLOCK_TIMEOUT 0x3406 +#define SPR_IDN_DEMUX_CA_COUNT 0x0a05 +#define SPR_IDN_DEMUX_COUNT_0 0x0a06 +#define SPR_IDN_DEMUX_COUNT_1 0x0a07 +#define SPR_IDN_DEMUX_CTL 0x0a08 +#define SPR_IDN_DEMUX_QUEUE_SEL 0x0a0a +#define SPR_IDN_DEMUX_STATUS 0x0a0b +#define SPR_IDN_DEMUX_WRITE_FIFO 0x0a0c +#define SPR_IDN_DIRECTION_PROTECT 0x2e05 +#define SPR_IDN_PENDING 0x0a0e +#define SPR_IDN_REFILL_EN 0x0e05 +#define SPR_IDN_SP_FIFO_DATA 0x0a0f +#define SPR_IDN_SP_FIFO_SEL 0x0a10 +#define SPR_IDN_SP_FREEZE 0x0a11 +#define SPR_IDN_SP_FREEZE__SP_FRZ_MASK 0x1 +#define SPR_IDN_SP_FREEZE__DEMUX_FRZ_MASK 0x2 +#define SPR_IDN_SP_FREEZE__NON_DEST_EXT_MASK 0x4 +#define SPR_IDN_SP_STATE 0x0a12 +#define SPR_IDN_TAG_0 0x0a13 +#define SPR_IDN_TAG_1 0x0a14 +#define SPR_IDN_TAG_VALID 0x0a15 +#define SPR_IDN_TILE_COORD 0x0a16 #define SPR_INTCTRL_0_STATUS 0x4a07 #define SPR_INTCTRL_1_STATUS 0x4807 #define SPR_INTCTRL_2_STATUS 0x4607 @@ -87,12 +112,36 @@ #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_AUX_PERF_COUNT_SET_0 0x6000 +#define SPR_MPL_AUX_PERF_COUNT_SET_1 0x6001 +#define SPR_MPL_AUX_PERF_COUNT_SET_2 0x6002 #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_IDN_ACCESS_SET_0 0x0a00 +#define SPR_MPL_IDN_ACCESS_SET_1 0x0a01 +#define SPR_MPL_IDN_ACCESS_SET_2 0x0a02 +#define SPR_MPL_IDN_AVAIL_SET_0 0x3e00 +#define SPR_MPL_IDN_AVAIL_SET_1 0x3e01 +#define SPR_MPL_IDN_AVAIL_SET_2 0x3e02 +#define SPR_MPL_IDN_CA_SET_0 0x3a00 +#define SPR_MPL_IDN_CA_SET_1 0x3a01 +#define SPR_MPL_IDN_CA_SET_2 0x3a02 +#define SPR_MPL_IDN_COMPLETE_SET_0 0x1200 +#define SPR_MPL_IDN_COMPLETE_SET_1 0x1201 +#define SPR_MPL_IDN_COMPLETE_SET_2 0x1202 +#define SPR_MPL_IDN_FIREWALL_SET_0 0x2e00 +#define SPR_MPL_IDN_FIREWALL_SET_1 0x2e01 +#define SPR_MPL_IDN_FIREWALL_SET_2 0x2e02 +#define SPR_MPL_IDN_REFILL_SET_0 0x0e00 +#define SPR_MPL_IDN_REFILL_SET_1 0x0e01 +#define SPR_MPL_IDN_REFILL_SET_2 0x0e02 +#define SPR_MPL_IDN_TIMER_SET_0 0x3400 +#define SPR_MPL_IDN_TIMER_SET_1 0x3401 +#define SPR_MPL_IDN_TIMER_SET_2 0x3402 #define SPR_MPL_INTCTRL_0_SET_0 0x4a00 #define SPR_MPL_INTCTRL_0_SET_1 0x4a01 #define SPR_MPL_INTCTRL_0_SET_2 0x4a02 @@ -102,6 +151,9 @@ #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_PERF_COUNT_SET_0 0x4200 +#define SPR_MPL_PERF_COUNT_SET_1 0x4201 +#define SPR_MPL_PERF_COUNT_SET_2 0x4202 #define SPR_MPL_SN_ACCESS_SET_0 0x0800 #define SPR_MPL_SN_ACCESS_SET_1 0x0801 #define SPR_MPL_SN_ACCESS_SET_2 0x0802 @@ -181,6 +233,7 @@ #define SPR_UDN_DEMUX_STATUS 0x0c0d #define SPR_UDN_DEMUX_WRITE_FIFO 0x0c0e #define SPR_UDN_DIRECTION_PROTECT 0x3005 +#define SPR_UDN_PENDING 0x0c10 #define SPR_UDN_REFILL_EN 0x1005 #define SPR_UDN_SP_FIFO_DATA 0x0c11 #define SPR_UDN_SP_FIFO_SEL 0x0c12 @@ -195,6 +248,9 @@ #define SPR_UDN_TAG_3 0x0c18 #define SPR_UDN_TAG_VALID 0x0c19 #define SPR_UDN_TILE_COORD 0x0c1a +#define SPR_WATCH_CTL 0x4209 +#define SPR_WATCH_MASK 0x420a +#define SPR_WATCH_VAL 0x420b #endif /* !defined(__ARCH_SPR_DEF_H__) */ diff --git a/arch/tile/include/arch/spr_def_64.h b/arch/tile/include/arch/spr_def_64.h index cd3e5f95d5f..0da86faa337 100644 --- a/arch/tile/include/arch/spr_def_64.h +++ b/arch/tile/include/arch/spr_def_64.h @@ -52,6 +52,13 @@ #define SPR_EX_CONTEXT_2_1__ICS_RMASK 0x1 #define SPR_EX_CONTEXT_2_1__ICS_MASK 0x4 #define SPR_FAIL 0x2707 +#define SPR_IDN_AVAIL_EN 0x1a05 +#define SPR_IDN_DATA_AVAIL 0x0a80 +#define SPR_IDN_DEADLOCK_TIMEOUT 0x1806 +#define SPR_IDN_DEMUX_COUNT_0 0x0a05 +#define SPR_IDN_DEMUX_COUNT_1 0x0a06 +#define SPR_IDN_DIRECTION_PROTECT 0x1405 +#define SPR_IDN_PENDING 0x0a08 #define SPR_ILL_TRANS_REASON__I_STREAM_VA_RMASK 0x1 #define SPR_INTCTRL_0_STATUS 0x2505 #define SPR_INTCTRL_1_STATUS 0x2405 @@ -88,9 +95,27 @@ #define SPR_IPI_MASK_SET_0 0x1f0a #define SPR_IPI_MASK_SET_1 0x1e0a #define SPR_IPI_MASK_SET_2 0x1d0a +#define SPR_MPL_AUX_PERF_COUNT_SET_0 0x2100 +#define SPR_MPL_AUX_PERF_COUNT_SET_1 0x2101 +#define SPR_MPL_AUX_PERF_COUNT_SET_2 0x2102 #define SPR_MPL_AUX_TILE_TIMER_SET_0 0x1700 #define SPR_MPL_AUX_TILE_TIMER_SET_1 0x1701 #define SPR_MPL_AUX_TILE_TIMER_SET_2 0x1702 +#define SPR_MPL_IDN_ACCESS_SET_0 0x0a00 +#define SPR_MPL_IDN_ACCESS_SET_1 0x0a01 +#define SPR_MPL_IDN_ACCESS_SET_2 0x0a02 +#define SPR_MPL_IDN_AVAIL_SET_0 0x1a00 +#define SPR_MPL_IDN_AVAIL_SET_1 0x1a01 +#define SPR_MPL_IDN_AVAIL_SET_2 0x1a02 +#define SPR_MPL_IDN_COMPLETE_SET_0 0x0500 +#define SPR_MPL_IDN_COMPLETE_SET_1 0x0501 +#define SPR_MPL_IDN_COMPLETE_SET_2 0x0502 +#define SPR_MPL_IDN_FIREWALL_SET_0 0x1400 +#define SPR_MPL_IDN_FIREWALL_SET_1 0x1401 +#define SPR_MPL_IDN_FIREWALL_SET_2 0x1402 +#define SPR_MPL_IDN_TIMER_SET_0 0x1800 +#define SPR_MPL_IDN_TIMER_SET_1 0x1801 +#define SPR_MPL_IDN_TIMER_SET_2 0x1802 #define SPR_MPL_INTCTRL_0_SET_0 0x2500 #define SPR_MPL_INTCTRL_0_SET_1 0x2501 #define SPR_MPL_INTCTRL_0_SET_2 0x2502 @@ -100,6 +125,21 @@ #define SPR_MPL_INTCTRL_2_SET_0 0x2300 #define SPR_MPL_INTCTRL_2_SET_1 0x2301 #define SPR_MPL_INTCTRL_2_SET_2 0x2302 +#define SPR_MPL_IPI_0 0x1f04 +#define SPR_MPL_IPI_0_SET_0 0x1f00 +#define SPR_MPL_IPI_0_SET_1 0x1f01 +#define SPR_MPL_IPI_0_SET_2 0x1f02 +#define SPR_MPL_IPI_1 0x1e04 +#define SPR_MPL_IPI_1_SET_0 0x1e00 +#define SPR_MPL_IPI_1_SET_1 0x1e01 +#define SPR_MPL_IPI_1_SET_2 0x1e02 +#define SPR_MPL_IPI_2 0x1d04 +#define SPR_MPL_IPI_2_SET_0 0x1d00 +#define SPR_MPL_IPI_2_SET_1 0x1d01 +#define SPR_MPL_IPI_2_SET_2 0x1d02 +#define SPR_MPL_PERF_COUNT_SET_0 0x2000 +#define SPR_MPL_PERF_COUNT_SET_1 0x2001 +#define SPR_MPL_PERF_COUNT_SET_2 0x2002 #define SPR_MPL_UDN_ACCESS_SET_0 0x0b00 #define SPR_MPL_UDN_ACCESS_SET_1 0x0b01 #define SPR_MPL_UDN_ACCESS_SET_2 0x0b02 @@ -167,6 +207,9 @@ #define SPR_UDN_DEMUX_COUNT_2 0x0b07 #define SPR_UDN_DEMUX_COUNT_3 0x0b08 #define SPR_UDN_DIRECTION_PROTECT 0x1505 +#define SPR_UDN_PENDING 0x0b0a +#define SPR_WATCH_MASK 0x200a +#define SPR_WATCH_VAL 0x200b #endif /* !defined(__ARCH_SPR_DEF_H__) */ diff --git a/arch/tile/include/asm/Kbuild b/arch/tile/include/asm/Kbuild index 0bb42642343..143473e3a0b 100644 --- a/arch/tile/include/asm/Kbuild +++ b/arch/tile/include/asm/Kbuild @@ -2,6 +2,7 @@ include include/asm-generic/Kbuild.asm header-y += ../arch/ +header-y += cachectl.h header-y += ucontext.h header-y += hardwall.h @@ -21,7 +22,6 @@ generic-y += ipcbuf.h generic-y += irq_regs.h generic-y += kdebug.h generic-y += local.h -generic-y += module.h generic-y += msgbuf.h generic-y += mutex.h generic-y += param.h diff --git a/arch/tile/include/asm/atomic_32.h b/arch/tile/include/asm/atomic_32.h index 54d1da826f9..e7fb5cfb959 100644 --- a/arch/tile/include/asm/atomic_32.h +++ b/arch/tile/include/asm/atomic_32.h @@ -303,7 +303,14 @@ void __init_atomic_per_cpu(void); void __atomic_fault_unlock(int *lock_ptr); #endif +/* Return a pointer to the lock for the given address. */ +int *__atomic_hashed_lock(volatile void *v); + /* Private helper routines in lib/atomic_asm_32.S */ +struct __get_user { + unsigned long val; + int err; +}; extern struct __get_user __atomic_cmpxchg(volatile int *p, int *lock, int o, int n); extern struct __get_user __atomic_xchg(volatile int *p, int *lock, int n); @@ -319,6 +326,9 @@ extern u64 __atomic64_xchg_add(volatile u64 *p, int *lock, u64 n); extern u64 __atomic64_xchg_add_unless(volatile u64 *p, int *lock, u64 o, u64 n); +/* Return failure from the atomic wrappers. */ +struct __get_user __atomic_bad_address(int __user *addr); + #endif /* !__ASSEMBLY__ */ #endif /* _ASM_TILE_ATOMIC_32_H */ diff --git a/arch/tile/include/asm/bitops.h b/arch/tile/include/asm/bitops.h index 16f1fa51fea..bd186c4eaa5 100644 --- a/arch/tile/include/asm/bitops.h +++ b/arch/tile/include/asm/bitops.h @@ -77,6 +77,11 @@ static inline int ffs(int x) return __builtin_ffs(x); } +static inline int fls64(__u64 w) +{ + return (sizeof(__u64) * 8) - __builtin_clzll(w); +} + /** * fls - find last set bit in word * @x: the word to search @@ -90,12 +95,7 @@ static inline int ffs(int x) */ static inline int fls(int x) { - return (sizeof(int) * 8) - __builtin_clz(x); -} - -static inline int fls64(__u64 w) -{ - return (sizeof(__u64) * 8) - __builtin_clzll(w); + return fls64((unsigned int) x); } static inline unsigned int __arch_hweight32(unsigned int w) diff --git a/arch/tile/include/asm/byteorder.h b/arch/tile/include/asm/byteorder.h index 9558416d578..fb72ecf4921 100644 --- a/arch/tile/include/asm/byteorder.h +++ b/arch/tile/include/asm/byteorder.h @@ -1 +1,21 @@ +/* + * Copyright 2011 Tilera Corporation. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for + * more details. + */ + +#if defined (__BIG_ENDIAN__) +#include <linux/byteorder/big_endian.h> +#elif defined (__LITTLE_ENDIAN__) #include <linux/byteorder/little_endian.h> +#else +#error "__BIG_ENDIAN__ or __LITTLE_ENDIAN__ must be defined." +#endif diff --git a/arch/tile/include/asm/cachectl.h b/arch/tile/include/asm/cachectl.h new file mode 100644 index 00000000000..af4c9f9154d --- /dev/null +++ b/arch/tile/include/asm/cachectl.h @@ -0,0 +1,42 @@ +/* + * Copyright 2011 Tilera Corporation. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for + * more details. + */ + +#ifndef _ASM_TILE_CACHECTL_H +#define _ASM_TILE_CACHECTL_H + +/* + * Options for cacheflush system call. + * + * The ICACHE flush is performed on all cores currently running the + * current process's address space. The intent is for user + * applications to be able to modify code, invoke the system call, + * then allow arbitrary other threads in the same address space to see + * the newly-modified code. Passing a length of CHIP_L1I_CACHE_SIZE() + * or more invalidates the entire icache on all cores in the address + * spaces. (Note: currently this option invalidates the entire icache + * regardless of the requested address and length, but we may choose + * to honor the arguments at some point.) + * + * Flush and invalidation of memory can normally be performed with the + * __insn_flush(), __insn_inv(), and __insn_finv() instructions from + * userspace. The DCACHE option to the system call allows userspace + * to flush the entire L1+L2 data cache from the core. In this case, + * the address and length arguments are not used. The DCACHE flush is + * restricted to the current core, not all cores in the address space. + */ +#define ICACHE (1<<0) /* invalidate L1 instruction cache */ +#define DCACHE (1<<1) /* flush and invalidate data cache */ +#define BCACHE (ICACHE|DCACHE) /* flush both caches */ + +#endif /* _ASM_TILE_CACHECTL_H */ diff --git a/arch/tile/include/asm/compat.h b/arch/tile/include/asm/compat.h index 4b4b28969a6..69adc08d36a 100644 --- a/arch/tile/include/asm/compat.h +++ b/arch/tile/include/asm/compat.h @@ -242,9 +242,6 @@ long compat_sys_fallocate(int fd, int mode, long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval); -/* Tilera Linux syscalls that don't have "compat" versions. */ -#define compat_sys_flush_cache sys_flush_cache - /* These are the intvec_64.S trampolines. */ long _compat_sys_execve(const char __user *path, const compat_uptr_t __user *argv, diff --git a/arch/tile/include/asm/elf.h b/arch/tile/include/asm/elf.h index 623a6bb741c..d16d006d660 100644 --- a/arch/tile/include/asm/elf.h +++ b/arch/tile/include/asm/elf.h @@ -44,7 +44,11 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; #else #define ELF_CLASS ELFCLASS32 #endif +#ifdef __BIG_ENDIAN__ +#define ELF_DATA ELFDATA2MSB +#else #define ELF_DATA ELFDATA2LSB +#endif /* * There seems to be a bug in how compat_binfmt_elf.c works: it @@ -59,6 +63,7 @@ enum { ELF_ARCH = CHIP_ELF_TYPE() }; */ #define elf_check_arch(x) \ ((x)->e_ident[EI_CLASS] == ELF_CLASS && \ + (x)->e_ident[EI_DATA] == ELF_DATA && \ (x)->e_machine == CHIP_ELF_TYPE()) /* The module loader only handles a few relocation types. */ diff --git a/arch/tile/include/asm/futex.h b/arch/tile/include/asm/futex.h index d03ec124a59..5909ac3d721 100644 --- a/arch/tile/include/asm/futex.h +++ b/arch/tile/include/asm/futex.h @@ -28,29 +28,81 @@ #include <linux/futex.h> #include <linux/uaccess.h> #include <linux/errno.h> +#include <asm/atomic.h> -extern struct __get_user futex_set(u32 __user *v, int i); -extern struct __get_user futex_add(u32 __user *v, int n); -extern struct __get_user futex_or(u32 __user *v, int n); -extern struct __get_user futex_andn(u32 __user *v, int n); -extern struct __get_user futex_cmpxchg(u32 __user *v, int o, int n); +/* + * Support macros for futex operations. Do not use these macros directly. + * They assume "ret", "val", "oparg", and "uaddr" in the lexical context. + * __futex_cmpxchg() additionally assumes "oldval". + */ + +#ifdef __tilegx__ + +#define __futex_asm(OP) \ + asm("1: {" #OP " %1, %3, %4; movei %0, 0 }\n" \ + ".pushsection .fixup,\"ax\"\n" \ + "0: { movei %0, %5; j 9f }\n" \ + ".section __ex_table,\"a\"\n" \ + ".quad 1b, 0b\n" \ + ".popsection\n" \ + "9:" \ + : "=r" (ret), "=r" (val), "+m" (*(uaddr)) \ + : "r" (uaddr), "r" (oparg), "i" (-EFAULT)) + +#define __futex_set() __futex_asm(exch4) +#define __futex_add() __futex_asm(fetchadd4) +#define __futex_or() __futex_asm(fetchor4) +#define __futex_andn() ({ oparg = ~oparg; __futex_asm(fetchand4); }) +#define __futex_cmpxchg() \ + ({ __insn_mtspr(SPR_CMPEXCH_VALUE, oldval); __futex_asm(cmpexch4); }) + +#define __futex_xor() \ + ({ \ + u32 oldval, n = oparg; \ + if ((ret = __get_user(oldval, uaddr)) == 0) { \ + do { \ + oparg = oldval ^ n; \ + __futex_cmpxchg(); \ + } while (ret == 0 && oldval != val); \ + } \ + }) + +/* No need to prefetch, since the atomic ops go to the home cache anyway. */ +#define __futex_prolog() -#ifndef __tilegx__ -extern struct __get_user futex_xor(u32 __user *v, int n); #else -static inline struct __get_user futex_xor(u32 __user *uaddr, int n) -{ - struct __get_user asm_ret = __get_user_4(uaddr); - if (!asm_ret.err) { - int oldval, newval; - do { - oldval = asm_ret.val; - newval = oldval ^ n; - asm_ret = futex_cmpxchg(uaddr, oldval, newval); - } while (asm_ret.err == 0 && oldval != asm_ret.val); + +#define __futex_call(FN) \ + { \ + struct __get_user gu = FN((u32 __force *)uaddr, lock, oparg); \ + val = gu.val; \ + ret = gu.err; \ } - return asm_ret; -} + +#define __futex_set() __futex_call(__atomic_xchg) +#define __futex_add() __futex_call(__atomic_xchg_add) +#define __futex_or() __futex_call(__atomic_or) +#define __futex_andn() __futex_call(__atomic_andn) +#define __futex_xor() __futex_call(__atomic_xor) + +#define __futex_cmpxchg() \ + { \ + struct __get_user gu = __atomic_cmpxchg((u32 __force *)uaddr, \ + lock, oldval, oparg); \ + val = gu.val; \ + ret = gu.err; \ + } + +/* + * Find the lock pointer for the atomic calls to use, and issue a + * prefetch to the user address to bring it into cache. Similar to + * __atomic_setup(), but we can't do a read into the L1 since it might + * fault; instead we do a prefetch into the L2. + */ +#define __futex_prolog() \ + int *lock; \ + __insn_prefetch(uaddr); \ + lock = __atomic_hashed_lock((int __force *)uaddr) #endif static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr) @@ -59,8 +111,12 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr) int cmp = (encoded_op >> 24) & 15; int oparg = (encoded_op << 8) >> 20; int cmparg = (encoded_op << 20) >> 20; - int ret; - struct __get_user asm_ret; + int uninitialized_var(val), ret; + + __futex_prolog(); + + /* The 32-bit futex code makes this assumption, so validate it here. */ + BUILD_BUG_ON(sizeof(atomic_t) != sizeof(int)); if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) oparg = 1 << oparg; @@ -71,46 +127,45 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr) pagefault_disable(); switch (op) { case FUTEX_OP_SET: - asm_ret = futex_set(uaddr, oparg); + __futex_set(); break; case FUTEX_OP_ADD: - asm_ret = futex_add(uaddr, oparg); + __futex_add(); break; case FUTEX_OP_OR: - asm_ret = futex_or(uaddr, oparg); + __futex_or(); break; case FUTEX_OP_ANDN: - asm_ret = futex_andn(uaddr, oparg); + __futex_andn(); break; case FUTEX_OP_XOR: - asm_ret = futex_xor(uaddr, oparg); + __futex_xor(); break; default: - asm_ret.err = -ENOSYS; + ret = -ENOSYS; + break; } pagefault_enable(); - ret = asm_ret.err; - if (!ret) { switch (cmp) { case FUTEX_OP_CMP_EQ: - ret = (asm_ret.val == cmparg); + ret = (val == cmparg); break; case FUTEX_OP_CMP_NE: - ret = (asm_ret.val != cmparg); + ret = (val != cmparg); break; case FUTEX_OP_CMP_LT: - ret = (asm_ret.val < cmparg); + ret = (val < cmparg); break; case FUTEX_OP_CMP_GE: - ret = (asm_ret.val >= cmparg); + ret = (val >= cmparg); break; case FUTEX_OP_CMP_LE: - ret = (asm_ret.val <= cmparg); + ret = (val <= cmparg); break; case FUTEX_OP_CMP_GT: - ret = (asm_ret.val > cmparg); + ret = (val > cmparg); break; default: ret = -ENOSYS; @@ -120,22 +175,20 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr) } static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, - u32 oldval, u32 newval) + u32 oldval, u32 oparg) { - struct __get_user asm_ret; + int ret, val; + + __futex_prolog(); if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))) return -EFAULT; - asm_ret = futex_cmpxchg(uaddr, oldval, newval); - *uval = asm_ret.val; - return asm_ret.err; -} + __futex_cmpxchg(); -#ifndef __tilegx__ -/* Return failure from the atomic wrappers. */ -struct __get_user __atomic_bad_address(int __user *addr); -#endif + *uval = val; + return ret; +} #endif /* !__ASSEMBLY__ */ diff --git a/arch/tile/include/asm/hardwall.h b/arch/tile/include/asm/hardwall.h index 2ac422848c7..47514a58d68 100644 --- a/arch/tile/include/asm/hardwall.h +++ b/arch/tile/include/asm/hardwall.h @@ -11,12 +11,14 @@ * NON INFRINGEMENT. See the GNU General Public License for * more details. * - * Provide methods for the HARDWALL_FILE for accessing the UDN. + * Provide methods for access control of per-cpu resources like + * UDN, IDN, or IPI. */ #ifndef _ASM_TILE_HARDWALL_H #define _ASM_TILE_HARDWALL_H +#include <arch/chip.h> #include <linux/ioctl.h> #define HARDWALL_IOCTL_BASE 0xa2 @@ -24,8 +26,9 @@ /* * The HARDWALL_CREATE() ioctl is a macro with a "size" argument. * The resulting ioctl value is passed to the kernel in conjunction - * with a pointer to a little-endian bitmask of cpus, which must be - * physically in a rectangular configuration on the chip. + * with a pointer to a standard kernel bitmask of cpus. + * For network resources (UDN or IDN) the bitmask must physically + * represent a rectangular configuration on the chip. * The "size" is the number of bytes of cpu mask data. */ #define _HARDWALL_CREATE 1 @@ -44,13 +47,7 @@ #define HARDWALL_GET_ID \ _IO(HARDWALL_IOCTL_BASE, _HARDWALL_GET_ID) -#ifndef __KERNEL__ - -/* This is the canonical name expected by userspace. */ -#define HARDWALL_FILE "/dev/hardwall" - -#else - +#ifdef __KERNEL__ /* /proc hooks for hardwall. */ struct proc_dir_entry; #ifdef CONFIG_HARDWALL @@ -59,7 +56,6 @@ int proc_pid_hardwall(struct task_struct *task, char *buffer); #else static inline void proc_tile_hardwall_init(struct proc_dir_entry *root) {} #endif - #endif #endif /* _ASM_TILE_HARDWALL_H */ diff --git a/arch/tile/include/asm/hugetlb.h b/arch/tile/include/asm/hugetlb.h index d396d180516..b2042380a5a 100644 --- a/arch/tile/include/asm/hugetlb.h +++ b/arch/tile/include/asm/hugetlb.h @@ -106,4 +106,25 @@ static inline void arch_release_hugepage(struct page *page) { } +#ifdef CONFIG_HUGETLB_SUPER_PAGES +static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, + struct page *page, int writable) +{ + size_t pagesize = huge_page_size(hstate_vma(vma)); + if (pagesize != PUD_SIZE && pagesize != PMD_SIZE) + entry = pte_mksuper(entry); + return entry; +} +#define arch_make_huge_pte arch_make_huge_pte + +/* Sizes to scale up page size for PTEs with HV_PTE_SUPER bit. */ +enum { + HUGE_SHIFT_PGDIR = 0, + HUGE_SHIFT_PMD = 1, + HUGE_SHIFT_PAGE = 2, + HUGE_SHIFT_ENTRIES +}; +extern int huge_shift[HUGE_SHIFT_ENTRIES]; +#endif + #endif /* _ASM_TILE_HUGETLB_H */ diff --git a/arch/tile/include/asm/irqflags.h b/arch/tile/include/asm/irqflags.h index 5db0ce54284..b4e96fef2cf 100644 --- a/arch/tile/include/asm/irqflags.h +++ b/arch/tile/include/asm/irqflags.h @@ -28,10 +28,10 @@ */ #if CHIP_HAS_AUX_PERF_COUNTERS() #define LINUX_MASKABLE_INTERRUPTS_HI \ - (~(INT_MASK_HI(INT_PERF_COUNT) | INT_MASK_HI(INT_AUX_PERF_COUNT))) + (~(INT_MASK_HI(INT_PERF_COUNT) | INT_MASK_HI(INT_AUX_PERF_COUNT))) #else #define LINUX_MASKABLE_INTERRUPTS_HI \ - (~(INT_MASK_HI(INT_PERF_COUNT))) + (~(INT_MASK_HI(INT_PERF_COUNT))) #endif #else @@ -90,6 +90,14 @@ __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) +#define interrupt_mask_save_mask() \ + (__insn_mfspr(SPR_INTERRUPT_MASK_SET_K_0) | \ + (((unsigned long long)__insn_mfspr(SPR_INTERRUPT_MASK_SET_K_1))<<32)) +#define interrupt_mask_restore_mask(mask) do { \ + unsigned long long __m = (mask); \ + __insn_mtspr(SPR_INTERRUPT_MASK_K_0, (unsigned long)(__m)); \ + __insn_mtspr(SPR_INTERRUPT_MASK_K_1, (unsigned long)(__m>>32)); \ +} while (0) #else #define interrupt_mask_set(n) \ __insn_mtspr(SPR_INTERRUPT_MASK_SET_K, (1UL << (n))) @@ -101,6 +109,10 @@ __insn_mtspr(SPR_INTERRUPT_MASK_SET_K, (mask)) #define interrupt_mask_reset_mask(mask) \ __insn_mtspr(SPR_INTERRUPT_MASK_RESET_K, (mask)) +#define interrupt_mask_save_mask() \ + __insn_mfspr(SPR_INTERRUPT_MASK_K) +#define interrupt_mask_restore_mask(mask) \ + __insn_mtspr(SPR_INTERRUPT_MASK_K, (mask)) #endif /* @@ -122,7 +134,7 @@ DECLARE_PER_CPU(unsigned long long, interrupts_enabled_mask); /* Disable all interrupts, including NMIs. */ #define arch_local_irq_disable_all() \ - interrupt_mask_set_mask(-1UL) + interrupt_mask_set_mask(-1ULL) /* Re-enable all maskable interrupts. */ #define arch_local_irq_enable() \ @@ -179,7 +191,7 @@ DECLARE_PER_CPU(unsigned long long, interrupts_enabled_mask); #ifdef __tilegx__ #if INT_MEM_ERROR != 0 -# error Fix IRQ_DISABLED() macro +# error Fix IRQS_DISABLED() macro #endif /* Return 0 or 1 to indicate whether interrupts are currently disabled. */ @@ -207,9 +219,10 @@ DECLARE_PER_CPU(unsigned long long, interrupts_enabled_mask); mtspr SPR_INTERRUPT_MASK_SET_K, tmp /* Enable interrupts. */ -#define IRQ_ENABLE(tmp0, tmp1) \ +#define IRQ_ENABLE_LOAD(tmp0, tmp1) \ GET_INTERRUPTS_ENABLED_MASK_PTR(tmp0); \ - ld tmp0, tmp0; \ + ld tmp0, tmp0 +#define IRQ_ENABLE_APPLY(tmp0, tmp1) \ mtspr SPR_INTERRUPT_MASK_RESET_K, tmp0 #else /* !__tilegx__ */ @@ -253,17 +266,22 @@ DECLARE_PER_CPU(unsigned long long, interrupts_enabled_mask); mtspr SPR_INTERRUPT_MASK_SET_K_1, tmp /* Enable interrupts. */ -#define IRQ_ENABLE(tmp0, tmp1) \ +#define IRQ_ENABLE_LOAD(tmp0, tmp1) \ GET_INTERRUPTS_ENABLED_MASK_PTR(tmp0); \ { \ lw tmp0, tmp0; \ addi tmp1, tmp0, 4 \ }; \ - lw tmp1, tmp1; \ + lw tmp1, tmp1 +#define IRQ_ENABLE_APPLY(tmp0, tmp1) \ mtspr SPR_INTERRUPT_MASK_RESET_K_0, tmp0; \ mtspr SPR_INTERRUPT_MASK_RESET_K_1, tmp1 #endif +#define IRQ_ENABLE(tmp0, tmp1) \ + IRQ_ENABLE_LOAD(tmp0, tmp1); \ + IRQ_ENABLE_APPLY(tmp0, tmp1) + /* * Do the CPU's IRQ-state tracing from assembly code. We call a * C function, but almost everywhere we do, we don't mind clobbering diff --git a/arch/tile/include/asm/kexec.h b/arch/tile/include/asm/kexec.h index c11a6cc73bb..fc98ccfc98a 100644 --- a/arch/tile/include/asm/kexec.h +++ b/arch/tile/include/asm/kexec.h @@ -19,12 +19,24 @@ #include <asm/page.h> +#ifndef __tilegx__ /* Maximum physical address we can use pages from. */ #define KEXEC_SOURCE_MEMORY_LIMIT TASK_SIZE /* Maximum address we can reach in physical address mode. */ #define KEXEC_DESTINATION_MEMORY_LIMIT TASK_SIZE /* Maximum address we can use for the control code buffer. */ #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE +#else +/* We need to limit the memory below PGDIR_SIZE since + * we only setup page table for [0, PGDIR_SIZE) before final kexec. + */ +/* Maximum physical address we can use pages from. */ +#define KEXEC_SOURCE_MEMORY_LIMIT PGDIR_SIZE +/* Maximum address we can reach in physical address mode. */ +#define KEXEC_DESTINATION_MEMORY_LIMIT PGDIR_SIZE +/* Maximum address we can use for the control code buffer. */ +#define KEXEC_CONTROL_MEMORY_LIMIT PGDIR_SIZE +#endif #define KEXEC_CONTROL_PAGE_SIZE PAGE_SIZE diff --git a/arch/tile/include/asm/mmu.h b/arch/tile/include/asm/mmu.h index 92f94c77b6e..e2c78909679 100644 --- a/arch/tile/include/asm/mmu.h +++ b/arch/tile/include/asm/mmu.h @@ -21,7 +21,7 @@ struct mm_context { * Written under the mmap_sem semaphore; read without the * semaphore but atomically, but it is conservatively set. */ - unsigned int priority_cached; + unsigned long priority_cached; }; typedef struct mm_context mm_context_t; diff --git a/arch/tile/include/asm/mmu_context.h b/arch/tile/include/asm/mmu_context.h index 15fb2464112..37f0b741dee 100644 --- a/arch/tile/include/asm/mmu_context.h +++ b/arch/tile/include/asm/mmu_context.h @@ -30,11 +30,15 @@ init_new_context(struct task_struct *tsk, struct mm_struct *mm) return 0; } -/* Note that arch/tile/kernel/head.S also calls hv_install_context() */ +/* + * Note that arch/tile/kernel/head_NN.S and arch/tile/mm/migrate_NN.S + * also call hv_install_context(). + */ static inline void __install_page_table(pgd_t *pgdir, int asid, pgprot_t prot) { /* FIXME: DIRECTIO should not always be set. FIXME. */ - int rc = hv_install_context(__pa(pgdir), prot, asid, HV_CTX_DIRECTIO); + int rc = hv_install_context(__pa(pgdir), prot, asid, + HV_CTX_DIRECTIO | CTX_PAGE_FLAG); if (rc < 0) panic("hv_install_context failed: %d", rc); } diff --git a/arch/tile/include/asm/module.h b/arch/tile/include/asm/module.h new file mode 100644 index 00000000000..44ed07ccd3d --- /dev/null +++ b/arch/tile/include/asm/module.h @@ -0,0 +1,40 @@ +/* + * Copyright 2011 Tilera Corporation. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for + * more details. + */ + +#ifndef _ASM_TILE_MODULE_H +#define _ASM_TILE_MODULE_H + +#include <arch/chip.h> + +#include <asm-generic/module.h> + +/* We can't use modules built with different page sizes. */ +#if defined(CONFIG_PAGE_SIZE_16KB) +# define MODULE_PGSZ " 16KB" +#elif defined(CONFIG_PAGE_SIZE_64KB) +# define MODULE_PGSZ " 64KB" +#else +# define MODULE_PGSZ "" +#endif + +/* We don't really support no-SMP so tag if someone tries. */ +#ifdef CONFIG_SMP +#define MODULE_NOSMP "" +#else +#define MODULE_NOSMP " nosmp" +#endif + +#define MODULE_ARCH_VERMAGIC CHIP_ARCH_NAME MODULE_PGSZ MODULE_NOSMP + +#endif /* _ASM_TILE_MODULE_H */ diff --git a/arch/tile/include/asm/page.h b/arch/tile/include/asm/page.h index db93518fac0..9d9131e5c55 100644 --- a/arch/tile/include/asm/page.h +++ b/arch/tile/include/asm/page.h @@ -20,8 +20,17 @@ #include <arch/chip.h> /* PAGE_SHIFT and HPAGE_SHIFT determine the page sizes. */ -#define PAGE_SHIFT HV_LOG2_PAGE_SIZE_SMALL -#define HPAGE_SHIFT HV_LOG2_PAGE_SIZE_LARGE +#if defined(CONFIG_PAGE_SIZE_16KB) +#define PAGE_SHIFT 14 +#define CTX_PAGE_FLAG HV_CTX_PG_SM_16K +#elif defined(CONFIG_PAGE_SIZE_64KB) +#define PAGE_SHIFT 16 +#define CTX_PAGE_FLAG HV_CTX_PG_SM_64K +#else +#define PAGE_SHIFT HV_LOG2_DEFAULT_PAGE_SIZE_SMALL +#define CTX_PAGE_FLAG 0 +#endif +#define HPAGE_SHIFT HV_LOG2_DEFAULT_PAGE_SIZE_LARGE #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) #define HPAGE_SIZE (_AC(1, UL) << HPAGE_SHIFT) @@ -78,8 +87,7 @@ typedef HV_PTE pgprot_t; /* * User L2 page tables are managed as one L2 page table per page, * because we use the page allocator for them. This keeps the allocation - * simple and makes it potentially useful to implement HIGHPTE at some point. - * However, it's also inefficient, since L2 page tables are much smaller + * simple, but it's also inefficient, since L2 page tables are much smaller * than pages (currently 2KB vs 64KB). So we should revisit this. */ typedef struct page *pgtable_t; @@ -128,7 +136,7 @@ static inline __attribute_const__ int get_order(unsigned long size) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) -#define HUGE_MAX_HSTATE 2 +#define HUGE_MAX_HSTATE 6 #ifdef CONFIG_HUGETLB_PAGE #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA diff --git a/arch/tile/include/asm/pgalloc.h b/arch/tile/include/asm/pgalloc.h index e919c0bdc22..1b902508b66 100644 --- a/arch/tile/include/asm/pgalloc.h +++ b/arch/tile/include/asm/pgalloc.h @@ -19,24 +19,24 @@ #include <linux/mm.h> #include <linux/mmzone.h> #include <asm/fixmap.h> +#include <asm/page.h> #include <hv/hypervisor.h> /* Bits for the size of the second-level page table. */ -#define L2_KERNEL_PGTABLE_SHIFT \ - (HV_LOG2_PAGE_SIZE_LARGE - HV_LOG2_PAGE_SIZE_SMALL + HV_LOG2_PTE_SIZE) +#define L2_KERNEL_PGTABLE_SHIFT _HV_LOG2_L2_SIZE(HPAGE_SHIFT, PAGE_SHIFT) + +/* How big is a kernel L2 page table? */ +#define L2_KERNEL_PGTABLE_SIZE (1UL << L2_KERNEL_PGTABLE_SHIFT) /* We currently allocate user L2 page tables by page (unlike kernel L2s). */ -#if L2_KERNEL_PGTABLE_SHIFT < HV_LOG2_PAGE_SIZE_SMALL -#define L2_USER_PGTABLE_SHIFT HV_LOG2_PAGE_SIZE_SMALL +#if L2_KERNEL_PGTABLE_SHIFT < PAGE_SHIFT +#define L2_USER_PGTABLE_SHIFT PAGE_SHIFT #else #define L2_USER_PGTABLE_SHIFT L2_KERNEL_PGTABLE_SHIFT #endif /* How many pages do we need, as an "order", for a user L2 page table? */ -#define L2_USER_PGTABLE_ORDER (L2_USER_PGTABLE_SHIFT - HV_LOG2_PAGE_SIZE_SMALL) - -/* How big is a kernel L2 page table? */ -#define L2_KERNEL_PGTABLE_SIZE (1 << L2_KERNEL_PGTABLE_SHIFT) +#define L2_USER_PGTABLE_ORDER (L2_USER_PGTABLE_SHIFT - PAGE_SHIFT) static inline void set_pmd(pmd_t *pmdp, pmd_t pmd) { @@ -50,14 +50,14 @@ static inline void set_pmd(pmd_t *pmdp, pmd_t pmd) static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *ptep) { - set_pmd(pmd, ptfn_pmd(__pa(ptep) >> HV_LOG2_PAGE_TABLE_ALIGN, + set_pmd(pmd, ptfn_pmd(HV_CPA_TO_PTFN(__pa(ptep)), __pgprot(_PAGE_PRESENT))); } static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page) { - set_pmd(pmd, ptfn_pmd(HV_PFN_TO_PTFN(page_to_pfn(page)), + set_pmd(pmd, ptfn_pmd(HV_CPA_TO_PTFN(PFN_PHYS(page_to_pfn(page))), __pgprot(_PAGE_PRESENT))); } @@ -68,8 +68,20 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, extern pgd_t *pgd_alloc(struct mm_struct *mm); extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); -extern pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address); -extern void pte_free(struct mm_struct *mm, struct page *pte); +extern pgtable_t pgtable_alloc_one(struct mm_struct *mm, unsigned long address, + int order); +extern void pgtable_free(struct mm_struct *mm, struct page *pte, int order); + +static inline pgtable_t pte_alloc_one(struct mm_struct *mm, + unsigned long address) +{ + return pgtable_alloc_one(mm, address, L2_USER_PGTABLE_ORDER); +} + +static inline void pte_free(struct mm_struct *mm, struct page *pte) +{ + pgtable_free(mm, pte, L2_USER_PGTABLE_ORDER); +} #define pmd_pgtable(pmd) pmd_page(pmd) @@ -85,8 +97,13 @@ static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) pte_free(mm, virt_to_page(pte)); } -extern void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte, - unsigned long address); +extern void __pgtable_free_tlb(struct mmu_gather *tlb, struct page *pte, + unsigned long address, int order); +static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte, + unsigned long address) +{ + __pgtable_free_tlb(tlb, pte, address, L2_USER_PGTABLE_ORDER); +} #define check_pgt_cache() do { } while (0) @@ -104,19 +121,44 @@ void shatter_pmd(pmd_t *pmd); void shatter_huge_page(unsigned long addr); #ifdef __tilegx__ -/* We share a single page allocator for both L1 and L2 page tables. */ -#if HV_L1_SIZE != HV_L2_SIZE -# error Rework assumption that L1 and L2 page tables are same size. -#endif -#define L1_USER_PGTABLE_ORDER L2_USER_PGTABLE_ORDER + #define pud_populate(mm, pud, pmd) \ pmd_populate_kernel((mm), (pmd_t *)(pud), (pte_t *)(pmd)) -#define pmd_alloc_one(mm, addr) \ - ((pmd_t *)page_to_virt(pte_alloc_one((mm), (addr)))) -#define pmd_free(mm, pmdp) \ - pte_free((mm), virt_to_page(pmdp)) -#define __pmd_free_tlb(tlb, pmdp, address) \ - __pte_free_tlb((tlb), virt_to_page(pmdp), (address)) + +/* Bits for the size of the L1 (intermediate) page table. */ +#define L1_KERNEL_PGTABLE_SHIFT _HV_LOG2_L1_SIZE(HPAGE_SHIFT) + +/* How big is a kernel L2 page table? */ +#define L1_KERNEL_PGTABLE_SIZE (1UL << L1_KERNEL_PGTABLE_SHIFT) + +/* We currently allocate L1 page tables by page. */ +#if L1_KERNEL_PGTABLE_SHIFT < PAGE_SHIFT +#define L1_USER_PGTABLE_SHIFT PAGE_SHIFT +#else +#define L1_USER_PGTABLE_SHIFT L1_KERNEL_PGTABLE_SHIFT #endif +/* How many pages do we need, as an "order", for an L1 page table? */ +#define L1_USER_PGTABLE_ORDER (L1_USER_PGTABLE_SHIFT - PAGE_SHIFT) + +static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) +{ + struct page *p = pgtable_alloc_one(mm, address, L1_USER_PGTABLE_ORDER); + return (pmd_t *)page_to_virt(p); +} + +static inline void pmd_free(struct mm_struct *mm, pmd_t *pmdp) +{ + pgtable_free(mm, virt_to_page(pmdp), L1_USER_PGTABLE_ORDER); +} + +static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, + unsigned long address) +{ + __pgtable_free_tlb(tlb, virt_to_page(pmdp), address, + L1_USER_PGTABLE_ORDER); +} + +#endif /* __tilegx__ */ + #endif /* _ASM_TILE_PGALLOC_H */ diff --git a/arch/tile/include/asm/pgtable.h b/arch/tile/include/asm/pgtable.h index 67490910774..73b1a4c9ad0 100644 --- a/arch/tile/include/asm/pgtable.h +++ b/arch/tile/include/asm/pgtable.h @@ -27,8 +27,10 @@ #include <linux/slab.h> #include <linux/list.h> #include <linux/spinlock.h> +#include <linux/pfn.h> #include <asm/processor.h> #include <asm/fixmap.h> +#include <asm/page.h> struct mm_struct; struct vm_area_struct; @@ -69,6 +71,7 @@ extern void set_page_homes(void); #define _PAGE_PRESENT HV_PTE_PRESENT #define _PAGE_HUGE_PAGE HV_PTE_PAGE +#define _PAGE_SUPER_PAGE HV_PTE_SUPER #define _PAGE_READABLE HV_PTE_READABLE #define _PAGE_WRITABLE HV_PTE_WRITABLE #define _PAGE_EXECUTABLE HV_PTE_EXECUTABLE @@ -85,6 +88,7 @@ extern void set_page_homes(void); #define _PAGE_ALL (\ _PAGE_PRESENT | \ _PAGE_HUGE_PAGE | \ + _PAGE_SUPER_PAGE | \ _PAGE_READABLE | \ _PAGE_WRITABLE | \ _PAGE_EXECUTABLE | \ @@ -162,7 +166,7 @@ extern void set_page_homes(void); (pgprot_t) { ((oldprot).val & ~_PAGE_ALL) | (newprot).val } /* Just setting the PFN to zero suffices. */ -#define pte_pgprot(x) hv_pte_set_pfn((x), 0) +#define pte_pgprot(x) hv_pte_set_pa((x), 0) /* * For PTEs and PDEs, we must clear the Present bit first when @@ -187,6 +191,7 @@ static inline void __pte_clear(pte_t *ptep) * Undefined behaviour if not.. */ #define pte_present hv_pte_get_present +#define pte_mknotpresent hv_pte_clear_present #define pte_user hv_pte_get_user #define pte_read hv_pte_get_readable #define pte_dirty hv_pte_get_dirty @@ -194,6 +199,7 @@ static inline void __pte_clear(pte_t *ptep) #define pte_write hv_pte_get_writable #define pte_exec hv_pte_get_executable #define pte_huge hv_pte_get_page +#define pte_super hv_pte_get_super #define pte_rdprotect hv_pte_clear_readable #define pte_exprotect hv_pte_clear_executable #define pte_mkclean hv_pte_clear_dirty @@ -206,6 +212,7 @@ static inline void __pte_clear(pte_t *ptep) #define pte_mkyoung hv_pte_set_accessed #define pte_mkwrite hv_pte_set_writable #define pte_mkhuge hv_pte_set_page +#define pte_mksuper hv_pte_set_super #define pte_special(pte) 0 #define pte_mkspecial(pte) (pte) @@ -261,7 +268,7 @@ static inline int pte_none(pte_t pte) static inline unsigned long pte_pfn(pte_t pte) { - return hv_pte_get_pfn(pte); + return PFN_DOWN(hv_pte_get_pa(pte)); } /* Set or get the remote cache cpu in a pgprot with remote caching. */ @@ -270,7 +277,7 @@ extern int get_remote_cache_cpu(pgprot_t prot); static inline pte_t pfn_pte(unsigned long pfn, pgprot_t prot) { - return hv_pte_set_pfn(prot, pfn); + return hv_pte_set_pa(prot, PFN_PHYS(pfn)); } /* Support for priority mappings. */ @@ -312,7 +319,7 @@ extern void check_mm_caching(struct mm_struct *prev, struct mm_struct *next); */ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { - return pfn_pte(hv_pte_get_pfn(pte), newprot); + return pfn_pte(pte_pfn(pte), newprot); } /* @@ -335,13 +342,8 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) -#if defined(CONFIG_HIGHPTE) -extern pte_t *pte_offset_map(pmd_t *, unsigned long address); -#define pte_unmap(pte) kunmap_atomic(pte) -#else #define pte_offset_map(dir, address) pte_offset_kernel(dir, address) #define pte_unmap(pte) do { } while (0) -#endif /* Clear a non-executable kernel PTE and flush it from the TLB. */ #define kpte_clear_flush(ptep, vaddr) \ @@ -410,6 +412,46 @@ static inline unsigned long pmd_index(unsigned long address) return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1); } +#define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG +static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma, + unsigned long address, + pmd_t *pmdp) +{ + return ptep_test_and_clear_young(vma, address, pmdp_ptep(pmdp)); +} + +#define __HAVE_ARCH_PMDP_SET_WRPROTECT +static inline void pmdp_set_wrprotect(struct mm_struct *mm, + unsigned long address, pmd_t *pmdp) +{ + ptep_set_wrprotect(mm, address, pmdp_ptep(pmdp)); +} + + +#define __HAVE_ARCH_PMDP_GET_AND_CLEAR +static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm, + unsigned long address, + pmd_t *pmdp) +{ + return pte_pmd(ptep_get_and_clear(mm, address, pmdp_ptep(pmdp))); +} + +static inline void __set_pmd(pmd_t *pmdp, pmd_t pmdval) +{ + set_pte(pmdp_ptep(pmdp), pmd_pte(pmdval)); +} + +#define set_pmd_at(mm, addr, pmdp, pmdval) __set_pmd(pmdp, pmdval) + +/* Create a pmd from a PTFN. */ +static inline pmd_t ptfn_pmd(unsigned long ptfn, pgprot_t prot) +{ + return pte_pmd(hv_pte_set_ptfn(prot, ptfn)); +} + +/* Return the page-table frame number (ptfn) that a pmd_t points at. */ +#define pmd_ptfn(pmd) hv_pte_get_ptfn(pmd_pte(pmd)) + /* * A given kernel pmd_t maps to a specific virtual address (either a * kernel huge page or a kernel pte_t table). Since kernel pte_t @@ -430,7 +472,48 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd) * OK for pte_lockptr(), since we just end up with potentially one * lock being used for several pte_t arrays. */ -#define pmd_page(pmd) pfn_to_page(HV_PTFN_TO_PFN(pmd_ptfn(pmd))) +#define pmd_page(pmd) pfn_to_page(PFN_DOWN(HV_PTFN_TO_CPA(pmd_ptfn(pmd)))) + +static inline void pmd_clear(pmd_t *pmdp) +{ + __pte_clear(pmdp_ptep(pmdp)); +} + +#define pmd_mknotpresent(pmd) pte_pmd(pte_mknotpresent(pmd_pte(pmd))) +#define pmd_young(pmd) pte_young(pmd_pte(pmd)) +#define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd))) +#define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd))) +#define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd))) +#define pmd_write(pmd) pte_write(pmd_pte(pmd)) +#define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd))) +#define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd))) +#define pmd_huge_page(pmd) pte_huge(pmd_pte(pmd)) +#define pmd_mkhuge(pmd) pte_pmd(pte_mkhuge(pmd_pte(pmd))) +#define __HAVE_ARCH_PMD_WRITE + +#define pfn_pmd(pfn, pgprot) pte_pmd(pfn_pte((pfn), (pgprot))) +#define pmd_pfn(pmd) pte_pfn(pmd_pte(pmd)) +#define mk_pmd(page, pgprot) pfn_pmd(page_to_pfn(page), (pgprot)) + +static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot) +{ + return pfn_pmd(pmd_pfn(pmd), newprot); +} + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +#define has_transparent_hugepage() 1 +#define pmd_trans_huge pmd_huge_page + +static inline pmd_t pmd_mksplitting(pmd_t pmd) +{ + return pte_pmd(hv_pte_set_client2(pmd_pte(pmd))); +} + +static inline int pmd_trans_splitting(pmd_t pmd) +{ + return hv_pte_get_client2(pmd_pte(pmd)); +} +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ /* * The pte page can be thought of an array like this: pte_t[PTRS_PER_PTE] @@ -448,17 +531,13 @@ static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address) return (pte_t *)pmd_page_vaddr(*pmd) + pte_index(address); } -static inline int pmd_huge_page(pmd_t pmd) -{ - return pmd_val(pmd) & _PAGE_HUGE_PAGE; -} - #include <asm-generic/pgtable.h> /* Support /proc/NN/pgtable API. */ struct seq_file; int arch_proc_pgtable_show(struct seq_file *m, struct mm_struct *mm, - unsigned long vaddr, pte_t *ptep, void **datap); + unsigned long vaddr, unsigned long pagesize, + pte_t *ptep, void **datap); #endif /* !__ASSEMBLY__ */ diff --git a/arch/tile/include/asm/pgtable_32.h b/arch/tile/include/asm/pgtable_32.h index 9f98529761f..4ce4a7a99c2 100644 --- a/arch/tile/include/asm/pgtable_32.h +++ b/arch/tile/include/asm/pgtable_32.h @@ -20,11 +20,12 @@ * The level-1 index is defined by the huge page size. A PGD is composed * of PTRS_PER_PGD pgd_t's and is the top level of the page table. */ -#define PGDIR_SHIFT HV_LOG2_PAGE_SIZE_LARGE -#define PGDIR_SIZE HV_PAGE_SIZE_LARGE +#define PGDIR_SHIFT HPAGE_SHIFT +#define PGDIR_SIZE HPAGE_SIZE #define PGDIR_MASK (~(PGDIR_SIZE-1)) -#define PTRS_PER_PGD (1 << (32 - PGDIR_SHIFT)) -#define SIZEOF_PGD (PTRS_PER_PGD * sizeof(pgd_t)) +#define PTRS_PER_PGD _HV_L1_ENTRIES(HPAGE_SHIFT) +#define PGD_INDEX(va) _HV_L1_INDEX(va, HPAGE_SHIFT) +#define SIZEOF_PGD _HV_L1_SIZE(HPAGE_SHIFT) /* * The level-2 index is defined by the difference between the huge @@ -33,8 +34,9 @@ * Note that the hypervisor docs use PTE for what we call pte_t, so * this nomenclature is somewhat confusing. */ -#define PTRS_PER_PTE (1 << (HV_LOG2_PAGE_SIZE_LARGE - HV_LOG2_PAGE_SIZE_SMALL)) -#define SIZEOF_PTE (PTRS_PER_PTE * sizeof(pte_t)) +#define PTRS_PER_PTE _HV_L2_ENTRIES(HPAGE_SHIFT, PAGE_SHIFT) +#define PTE_INDEX(va) _HV_L2_INDEX(va, HPAGE_SHIFT, PAGE_SHIFT) +#define SIZEOF_PTE _HV_L2_SIZE(HPAGE_SHIFT, PAGE_SHIFT) #ifndef __ASSEMBLY__ @@ -111,24 +113,14 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm, return pte; } -static inline void __set_pmd(pmd_t *pmdp, pmd_t pmdval) -{ - set_pte(&pmdp->pud.pgd, pmdval.pud.pgd); -} - -/* Create a pmd from a PTFN. */ -static inline pmd_t ptfn_pmd(unsigned long ptfn, pgprot_t prot) -{ - return (pmd_t){ { hv_pte_set_ptfn(prot, ptfn) } }; -} - -/* Return the page-table frame number (ptfn) that a pmd_t points at. */ -#define pmd_ptfn(pmd) hv_pte_get_ptfn((pmd).pud.pgd) - -static inline void pmd_clear(pmd_t *pmdp) -{ - __pte_clear(&pmdp->pud.pgd); -} +/* + * pmds are wrappers around pgds, which are the same as ptes. + * It's often convenient to "cast" back and forth and use the pte methods, + * which are the methods supplied by the hypervisor. + */ +#define pmd_pte(pmd) ((pmd).pud.pgd) +#define pmdp_ptep(pmdp) (&(pmdp)->pud.pgd) +#define pte_pmd(pte) ((pmd_t){ { (pte) } }) #endif /* __ASSEMBLY__ */ diff --git a/arch/tile/include/asm/pgtable_64.h b/arch/tile/include/asm/pgtable_64.h index fd80328523b..2492fa5478e 100644 --- a/arch/tile/include/asm/pgtable_64.h +++ b/arch/tile/include/asm/pgtable_64.h @@ -21,17 +21,19 @@ #define PGDIR_SIZE HV_L1_SPAN #define PGDIR_MASK (~(PGDIR_SIZE-1)) #define PTRS_PER_PGD HV_L0_ENTRIES -#define SIZEOF_PGD (PTRS_PER_PGD * sizeof(pgd_t)) +#define PGD_INDEX(va) HV_L0_INDEX(va) +#define SIZEOF_PGD HV_L0_SIZE /* * The level-1 index is defined by the huge page size. A PMD is composed * of PTRS_PER_PMD pgd_t's and is the middle level of the page table. */ -#define PMD_SHIFT HV_LOG2_PAGE_SIZE_LARGE -#define PMD_SIZE HV_PAGE_SIZE_LARGE +#define PMD_SHIFT HPAGE_SHIFT +#define PMD_SIZE HPAGE_SIZE #define PMD_MASK (~(PMD_SIZE-1)) -#define PTRS_PER_PMD (1 << (PGDIR_SHIFT - PMD_SHIFT)) -#define SIZEOF_PMD (PTRS_PER_PMD * sizeof(pmd_t)) +#define PTRS_PER_PMD _HV_L1_ENTRIES(HPAGE_SHIFT) +#define PMD_INDEX(va) _HV_L1_INDEX(va, HPAGE_SHIFT) +#define SIZEOF_PMD _HV_L1_SIZE(HPAGE_SHIFT) /* * The level-2 index is defined by the difference between the huge @@ -40,17 +42,19 @@ * Note that the hypervisor docs use PTE for what we call pte_t, so * this nomenclature is somewhat confusing. */ -#define PTRS_PER_PTE (1 << (HV_LOG2_PAGE_SIZE_LARGE - HV_LOG2_PAGE_SIZE_SMALL)) -#define SIZEOF_PTE (PTRS_PER_PTE * sizeof(pte_t)) +#define PTRS_PER_PTE _HV_L2_ENTRIES(HPAGE_SHIFT, PAGE_SHIFT) +#define PTE_INDEX(va) _HV_L2_INDEX(va, HPAGE_SHIFT, PAGE_SHIFT) +#define SIZEOF_PTE _HV_L2_SIZE(HPAGE_SHIFT, PAGE_SHIFT) /* - * Align the vmalloc area to an L2 page table, and leave a guard page - * at the beginning and end. The vmalloc code also puts in an internal + * Align the vmalloc area to an L2 page table. Omit guard pages at + * the beginning and end for simplicity (particularly in the per-cpu + * memory allocation code). The vmalloc code puts in an internal * guard page between each allocation. */ #define _VMALLOC_END HUGE_VMAP_BASE -#define VMALLOC_END (_VMALLOC_END - PAGE_SIZE) -#define VMALLOC_START (_VMALLOC_START + PAGE_SIZE) +#define VMALLOC_END _VMALLOC_END +#define VMALLOC_START _VMALLOC_START #define HUGE_VMAP_END (HUGE_VMAP_BASE + PGDIR_SIZE) @@ -98,7 +102,7 @@ static inline int pud_bad(pud_t pud) * A pud_t points to a pmd_t array. Since we can have multiple per * page, we don't have a one-to-one mapping of pud_t's to pages. */ -#define pud_page(pud) pfn_to_page(HV_PTFN_TO_PFN(pud_ptfn(pud))) +#define pud_page(pud) pfn_to_page(PFN_DOWN(HV_PTFN_TO_CPA(pud_ptfn(pud)))) static inline unsigned long pud_index(unsigned long address) { @@ -108,28 +112,6 @@ static inline unsigned long pud_index(unsigned long address) #define pmd_offset(pud, address) \ ((pmd_t *)pud_page_vaddr(*(pud)) + pmd_index(address)) -static inline void __set_pmd(pmd_t *pmdp, pmd_t pmdval) -{ - set_pte(pmdp, pmdval); -} - -/* Create a pmd from a PTFN and pgprot. */ -static inline pmd_t ptfn_pmd(unsigned long ptfn, pgprot_t prot) -{ - return hv_pte_set_ptfn(prot, ptfn); -} - -/* Return the page-table frame number (ptfn) that a pmd_t points at. */ -static inline unsigned long pmd_ptfn(pmd_t pmd) -{ - return hv_pte_get_ptfn(pmd); -} - -static inline void pmd_clear(pmd_t *pmdp) -{ - __pte_clear(pmdp); -} - /* Normalize an address to having the correct high bits set. */ #define pgd_addr_normalize pgd_addr_normalize static inline unsigned long pgd_addr_normalize(unsigned long addr) @@ -170,6 +152,13 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm, return hv_pte(__insn_exch(&ptep->val, 0UL)); } +/* + * pmds are the same as pgds and ptes, so converting is a no-op. + */ +#define pmd_pte(pmd) (pmd) +#define pmdp_ptep(pmdp) (pmdp) +#define pte_pmd(pte) (pte) + #endif /* __ASSEMBLY__ */ #endif /* _ASM_TILE_PGTABLE_64_H */ diff --git a/arch/tile/include/asm/processor.h b/arch/tile/include/asm/processor.h index 15cd8a4a06c..8c4dd9ff91e 100644 --- a/arch/tile/include/asm/processor.h +++ b/arch/tile/include/asm/processor.h @@ -76,6 +76,17 @@ struct async_tlb { #ifdef CONFIG_HARDWALL struct hardwall_info; +struct hardwall_task { + /* Which hardwall is this task tied to? (or NULL if none) */ + struct hardwall_info *info; + /* Chains this task into the list at info->task_head. */ + struct list_head list; +}; +#ifdef __tilepro__ +#define HARDWALL_TYPES 1 /* udn */ +#else +#define HARDWALL_TYPES 3 /* udn, idn, and ipi */ +#endif #endif struct thread_struct { @@ -116,10 +127,8 @@ struct thread_struct { unsigned long dstream_pf; #endif #ifdef CONFIG_HARDWALL - /* Is this task tied to an activated hardwall? */ - struct hardwall_info *hardwall; - /* Chains this task into the list at hardwall->list. */ - struct list_head hardwall_list; + /* Hardwall information for various resources. */ + struct hardwall_task hardwall[HARDWALL_TYPES]; #endif #if CHIP_HAS_TILE_DMA() /* Async DMA TLB fault information */ diff --git a/arch/tile/include/asm/setup.h b/arch/tile/include/asm/setup.h index e58613e0752..c67eb70ea78 100644 --- a/arch/tile/include/asm/setup.h +++ b/arch/tile/include/asm/setup.h @@ -41,15 +41,15 @@ void restrict_dma_mpls(void); #ifdef CONFIG_HARDWALL /* User-level network management functions */ void reset_network_state(void); -void grant_network_mpls(void); -void restrict_network_mpls(void); struct task_struct; -int hardwall_deactivate(struct task_struct *task); +void hardwall_switch_tasks(struct task_struct *prev, struct task_struct *next); +void hardwall_deactivate_all(struct task_struct *task); +int hardwall_ipi_valid(int cpu); /* Hook hardwall code into changes in affinity. */ #define arch_set_cpus_allowed(p, new_mask) do { \ - if (p->thread.hardwall && !cpumask_equal(&p->cpus_allowed, new_mask)) \ - hardwall_deactivate(p); \ + if (!cpumask_equal(&p->cpus_allowed, new_mask)) \ + hardwall_deactivate_all(p); \ } while (0) #endif diff --git a/arch/tile/include/asm/syscalls.h b/arch/tile/include/asm/syscalls.h index 3b5507c31ea..06f0464cfed 100644 --- a/arch/tile/include/asm/syscalls.h +++ b/arch/tile/include/asm/syscalls.h @@ -43,7 +43,8 @@ long sys32_fadvise64(int fd, u32 offset_lo, u32 offset_hi, u32 len, int advice); int sys32_fadvise64_64(int fd, u32 offset_lo, u32 offset_hi, u32 len_lo, u32 len_hi, int advice); -long sys_flush_cache(void); +long sys_cacheflush(unsigned long addr, unsigned long len, + unsigned long flags); #ifndef __tilegx__ /* No mmap() in the 32-bit kernel. */ #define sys_mmap sys_mmap #endif diff --git a/arch/tile/include/asm/tlbflush.h b/arch/tile/include/asm/tlbflush.h index 96199d214fb..dcf91b25a1e 100644 --- a/arch/tile/include/asm/tlbflush.h +++ b/arch/tile/include/asm/tlbflush.h @@ -38,16 +38,11 @@ DECLARE_PER_CPU(int, current_asid); /* The hypervisor tells us what ASIDs are available to us. */ extern int min_asid, max_asid; -static inline unsigned long hv_page_size(const struct vm_area_struct *vma) -{ - return (vma->vm_flags & VM_HUGETLB) ? HPAGE_SIZE : PAGE_SIZE; -} - /* Pass as vma pointer for non-executable mapping, if no vma available. */ -#define FLUSH_NONEXEC ((const struct vm_area_struct *)-1UL) +#define FLUSH_NONEXEC ((struct vm_area_struct *)-1UL) /* Flush a single user page on this cpu. */ -static inline void local_flush_tlb_page(const struct vm_area_struct *vma, +static inline void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long addr, unsigned long page_size) { @@ -60,7 +55,7 @@ static inline void local_flush_tlb_page(const struct vm_area_struct *vma, } /* Flush range of user pages on this cpu. */ -static inline void local_flush_tlb_pages(const struct vm_area_struct *vma, +static inline void local_flush_tlb_pages(struct vm_area_struct *vma, unsigned long addr, unsigned long page_size, unsigned long len) @@ -117,10 +112,10 @@ extern void flush_tlb_all(void); extern void flush_tlb_kernel_range(unsigned long start, unsigned long end); extern void flush_tlb_current_task(void); extern void flush_tlb_mm(struct mm_struct *); -extern void flush_tlb_page(const struct vm_area_struct *, unsigned long); -extern void flush_tlb_page_mm(const struct vm_area_struct *, +extern void flush_tlb_page(struct vm_area_struct *, unsigned long); +extern void flush_tlb_page_mm(struct vm_area_struct *, struct mm_struct *, unsigned long); -extern void flush_tlb_range(const struct vm_area_struct *, +extern void flush_tlb_range(struct vm_area_struct *, unsigned long start, unsigned long end); #define flush_tlb() flush_tlb_current_task() diff --git a/arch/tile/include/asm/uaccess.h b/arch/tile/include/asm/uaccess.h index ef34d2caa5b..c3dd275f25e 100644 --- a/arch/tile/include/asm/uaccess.h +++ b/arch/tile/include/asm/uaccess.h @@ -114,45 +114,75 @@ struct exception_table_entry { extern int fixup_exception(struct pt_regs *regs); /* - * We return the __get_user_N function results in a structure, - * thus in r0 and r1. If "err" is zero, "val" is the result - * of the read; otherwise, "err" is -EFAULT. - * - * We rarely need 8-byte values on a 32-bit architecture, but - * we size the structure to accommodate. In practice, for the - * the smaller reads, we can zero the high word for free, and - * the caller will ignore it by virtue of casting anyway. + * Support macros for __get_user(). + * + * Implementation note: The "case 8" logic of casting to the type of + * the result of subtracting the value from itself is basically a way + * of keeping all integer types the same, but casting any pointers to + * ptrdiff_t, i.e. also an integer type. This way there are no + * questionable casts seen by the compiler on an ILP32 platform. + * + * Note that __get_user() and __put_user() assume proper alignment. */ -struct __get_user { - unsigned long long val; - int err; -}; -/* - * FIXME: we should express these as inline extended assembler, since - * they're fundamentally just a variable dereference and some - * supporting exception_table gunk. Note that (a la i386) we can - * extend the copy_to_user and copy_from_user routines to call into - * such extended assembler routines, though we will have to use a - * different return code in that case (1, 2, or 4, rather than -EFAULT). - */ -extern struct __get_user __get_user_1(const void __user *); -extern struct __get_user __get_user_2(const void __user *); -extern struct __get_user __get_user_4(const void __user *); -extern struct __get_user __get_user_8(const void __user *); -extern int __put_user_1(long, void __user *); -extern int __put_user_2(long, void __user *); -extern int __put_user_4(long, void __user *); -extern int __put_user_8(long long, void __user *); - -/* Unimplemented routines to cause linker failures */ -extern struct __get_user __get_user_bad(void); -extern int __put_user_bad(void); +#ifdef __LP64__ +#define _ASM_PTR ".quad" +#else +#define _ASM_PTR ".long" +#endif + +#define __get_user_asm(OP, x, ptr, ret) \ + asm volatile("1: {" #OP " %1, %2; movei %0, 0 }\n" \ + ".pushsection .fixup,\"ax\"\n" \ + "0: { movei %1, 0; movei %0, %3 }\n" \ + "j 9f\n" \ + ".section __ex_table,\"a\"\n" \ + _ASM_PTR " 1b, 0b\n" \ + ".popsection\n" \ + "9:" \ + : "=r" (ret), "=r" (x) \ + : "r" (ptr), "i" (-EFAULT)) + +#ifdef __tilegx__ +#define __get_user_1(x, ptr, ret) __get_user_asm(ld1u, x, ptr, ret) +#define __get_user_2(x, ptr, ret) __get_user_asm(ld2u, x, ptr, ret) +#define __get_user_4(x, ptr, ret) __get_user_asm(ld4u, x, ptr, ret) +#define __get_user_8(x, ptr, ret) __get_user_asm(ld, x, ptr, ret) +#else +#define __get_user_1(x, ptr, ret) __get_user_asm(lb_u, x, ptr, ret) +#define __get_user_2(x, ptr, ret) __get_user_asm(lh_u, x, ptr, ret) +#define __get_user_4(x, ptr, ret) __get_user_asm(lw, x, ptr, ret) +#ifdef __LITTLE_ENDIAN +#define __lo32(a, b) a +#define __hi32(a, b) b +#else +#define __lo32(a, b) b +#define __hi32(a, b) a +#endif +#define __get_user_8(x, ptr, ret) \ + ({ \ + unsigned int __a, __b; \ + asm volatile("1: { lw %1, %3; addi %2, %3, 4 }\n" \ + "2: { lw %2, %2; movei %0, 0 }\n" \ + ".pushsection .fixup,\"ax\"\n" \ + "0: { movei %1, 0; movei %2, 0 }\n" \ + "{ movei %0, %4; j 9f }\n" \ + ".section __ex_table,\"a\"\n" \ + ".word 1b, 0b\n" \ + ".word 2b, 0b\n" \ + ".popsection\n" \ + "9:" \ + : "=r" (ret), "=r" (__a), "=&r" (__b) \ + : "r" (ptr), "i" (-EFAULT)); \ + (x) = (__typeof(x))(__typeof((x)-(x))) \ + (((u64)__hi32(__a, __b) << 32) | \ + __lo32(__a, __b)); \ + }) +#endif + +extern int __get_user_bad(void) + __attribute__((warning("sizeof __get_user argument not 1, 2, 4 or 8"))); -/* - * Careful: we have to cast the result to the type of the pointer - * for sign reasons. - */ /** * __get_user: - Get a simple variable from user space, with less checking. * @x: Variable to store result. @@ -174,30 +204,62 @@ extern int __put_user_bad(void); * function. */ #define __get_user(x, ptr) \ -({ struct __get_user __ret; \ - __typeof__(*(ptr)) const __user *__gu_addr = (ptr); \ - __chk_user_ptr(__gu_addr); \ - switch (sizeof(*(__gu_addr))) { \ - case 1: \ - __ret = __get_user_1(__gu_addr); \ - break; \ - case 2: \ - __ret = __get_user_2(__gu_addr); \ - break; \ - case 4: \ - __ret = __get_user_4(__gu_addr); \ - break; \ - case 8: \ - __ret = __get_user_8(__gu_addr); \ - break; \ - default: \ - __ret = __get_user_bad(); \ - break; \ - } \ - (x) = (__typeof__(*__gu_addr)) (__typeof__(*__gu_addr - *__gu_addr)) \ - __ret.val; \ - __ret.err; \ -}) + ({ \ + int __ret; \ + __chk_user_ptr(ptr); \ + switch (sizeof(*(ptr))) { \ + case 1: __get_user_1(x, ptr, __ret); break; \ + case 2: __get_user_2(x, ptr, __ret); break; \ + case 4: __get_user_4(x, ptr, __ret); break; \ + case 8: __get_user_8(x, ptr, __ret); break; \ + default: __ret = __get_user_bad(); break; \ + } \ + __ret; \ + }) + +/* Support macros for __put_user(). */ + +#define __put_user_asm(OP, x, ptr, ret) \ + asm volatile("1: {" #OP " %1, %2; movei %0, 0 }\n" \ + ".pushsection .fixup,\"ax\"\n" \ + "0: { movei %0, %3; j 9f }\n" \ + ".section __ex_table,\"a\"\n" \ + _ASM_PTR " 1b, 0b\n" \ + ".popsection\n" \ + "9:" \ + : "=r" (ret) \ + : "r" (ptr), "r" (x), "i" (-EFAULT)) + +#ifdef __tilegx__ +#define __put_user_1(x, ptr, ret) __put_user_asm(st1, x, ptr, ret) +#define __put_user_2(x, ptr, ret) __put_user_asm(st2, x, ptr, ret) +#define __put_user_4(x, ptr, ret) __put_user_asm(st4, x, ptr, ret) +#define __put_user_8(x, ptr, ret) __put_user_asm(st, x, ptr, ret) +#else +#define __put_user_1(x, ptr, ret) __put_user_asm(sb, x, ptr, ret) +#define __put_user_2(x, ptr, ret) __put_user_asm(sh, x, ptr, ret) +#define __put_user_4(x, ptr, ret) __put_user_asm(sw, x, ptr, ret) +#define __put_user_8(x, ptr, ret) \ + ({ \ + u64 __x = (__typeof((x)-(x)))(x); \ + int __lo = (int) __x, __hi = (int) (__x >> 32); \ + asm volatile("1: { sw %1, %2; addi %0, %1, 4 }\n" \ + "2: { sw %0, %3; movei %0, 0 }\n" \ + ".pushsection .fixup,\"ax\"\n" \ + "0: { movei %0, %4; j 9f }\n" \ + ".section __ex_table,\"a\"\n" \ + ".word 1b, 0b\n" \ + ".word 2b, 0b\n" \ + ".popsection\n" \ + "9:" \ + : "=&r" (ret) \ + : "r" (ptr), "r" (__lo32(__lo, __hi)), \ + "r" (__hi32(__lo, __hi)), "i" (-EFAULT)); \ + }) +#endif + +extern int __put_user_bad(void) + __attribute__((warning("sizeof __put_user argument not 1, 2, 4 or 8"))); /** * __put_user: - Write a simple value into user space, with less checking. @@ -217,39 +279,19 @@ extern int __put_user_bad(void); * function. * * Returns zero on success, or -EFAULT on error. - * - * Implementation note: The "case 8" logic of casting to the type of - * the result of subtracting the value from itself is basically a way - * of keeping all integer types the same, but casting any pointers to - * ptrdiff_t, i.e. also an integer type. This way there are no - * questionable casts seen by the compiler on an ILP32 platform. */ #define __put_user(x, ptr) \ ({ \ - int __pu_err = 0; \ - __typeof__(*(ptr)) __user *__pu_addr = (ptr); \ - typeof(*__pu_addr) __pu_val = (x); \ - __chk_user_ptr(__pu_addr); \ - switch (sizeof(__pu_val)) { \ - case 1: \ - __pu_err = __put_user_1((long)__pu_val, __pu_addr); \ - break; \ - case 2: \ - __pu_err = __put_user_2((long)__pu_val, __pu_addr); \ - break; \ - case 4: \ - __pu_err = __put_user_4((long)__pu_val, __pu_addr); \ - break; \ - case 8: \ - __pu_err = \ - __put_user_8((__typeof__(__pu_val - __pu_val))__pu_val,\ - __pu_addr); \ - break; \ - default: \ - __pu_err = __put_user_bad(); \ - break; \ + int __ret; \ + __chk_user_ptr(ptr); \ + switch (sizeof(*(ptr))) { \ + case 1: __put_user_1(x, ptr, __ret); break; \ + case 2: __put_user_2(x, ptr, __ret); break; \ + case 4: __put_user_4(x, ptr, __ret); break; \ + case 8: __put_user_8(x, ptr, __ret); break; \ + default: __ret = __put_user_bad(); break; \ } \ - __pu_err; \ + __ret; \ }) /* @@ -378,7 +420,7 @@ static inline unsigned long __must_check copy_from_user(void *to, /** * __copy_in_user() - copy data within user space, with less checking. * @to: Destination address, in user space. - * @from: Source address, in kernel space. + * @from: Source address, in user space. * @n: Number of bytes to copy. * * Context: User context only. This function may sleep. diff --git a/arch/tile/include/asm/unistd.h b/arch/tile/include/asm/unistd.h index f70bf1c541f..a017246ca0c 100644 --- a/arch/tile/include/asm/unistd.h +++ b/arch/tile/include/asm/unistd.h @@ -24,8 +24,8 @@ #include <asm-generic/unistd.h> /* Additional Tilera-specific syscalls. */ -#define __NR_flush_cache (__NR_arch_specific_syscall + 1) -__SYSCALL(__NR_flush_cache, sys_flush_cache) +#define __NR_cacheflush (__NR_arch_specific_syscall + 1) +__SYSCALL(__NR_cacheflush, sys_cacheflush) #ifndef __tilegx__ /* "Fast" syscalls provide atomic support for 32-bit chips. */ diff --git a/arch/tile/include/hv/drv_xgbe_intf.h b/arch/tile/include/hv/drv_xgbe_intf.h index f13188ac281..2a20b266d94 100644 --- a/arch/tile/include/hv/drv_xgbe_intf.h +++ b/arch/tile/include/hv/drv_xgbe_intf.h @@ -460,7 +460,7 @@ typedef void* lepp_comp_t; * linux's "MAX_SKB_FRAGS", and presumably over-estimates by one, for * our page size of exactly 65536. We add one for a "body" fragment. */ -#define LEPP_MAX_FRAGS (65536 / HV_PAGE_SIZE_SMALL + 2 + 1) +#define LEPP_MAX_FRAGS (65536 / HV_DEFAULT_PAGE_SIZE_SMALL + 2 + 1) /** Total number of bytes needed for an lepp_tso_cmd_t. */ #define LEPP_TSO_CMD_SIZE(num_frags, header_size) \ diff --git a/arch/tile/include/hv/hypervisor.h b/arch/tile/include/hv/hypervisor.h index 72ec1e972f1..ccd847e2347 100644 --- a/arch/tile/include/hv/hypervisor.h +++ b/arch/tile/include/hv/hypervisor.h @@ -17,8 +17,8 @@ * The hypervisor's public API. */ -#ifndef _TILE_HV_H -#define _TILE_HV_H +#ifndef _HV_HV_H +#define _HV_HV_H #include <arch/chip.h> @@ -42,25 +42,45 @@ */ #define HV_L1_SPAN (__HV_SIZE_ONE << HV_LOG2_L1_SPAN) -/** The log2 of the size of small pages, in bytes. This value should - * be verified at runtime by calling hv_sysconf(HV_SYSCONF_PAGE_SIZE_SMALL). +/** The log2 of the initial size of small pages, in bytes. + * See HV_DEFAULT_PAGE_SIZE_SMALL. */ -#define HV_LOG2_PAGE_SIZE_SMALL 16 +#define HV_LOG2_DEFAULT_PAGE_SIZE_SMALL 16 -/** The size of small pages, in bytes. This value should be verified +/** The initial size of small pages, in bytes. This value should be verified * at runtime by calling hv_sysconf(HV_SYSCONF_PAGE_SIZE_SMALL). + * It may also be modified when installing a new context. */ -#define HV_PAGE_SIZE_SMALL (__HV_SIZE_ONE << HV_LOG2_PAGE_SIZE_SMALL) +#define HV_DEFAULT_PAGE_SIZE_SMALL \ + (__HV_SIZE_ONE << HV_LOG2_DEFAULT_PAGE_SIZE_SMALL) -/** The log2 of the size of large pages, in bytes. This value should be - * verified at runtime by calling hv_sysconf(HV_SYSCONF_PAGE_SIZE_LARGE). +/** The log2 of the initial size of large pages, in bytes. + * See HV_DEFAULT_PAGE_SIZE_LARGE. */ -#define HV_LOG2_PAGE_SIZE_LARGE 24 +#define HV_LOG2_DEFAULT_PAGE_SIZE_LARGE 24 -/** The size of large pages, in bytes. This value should be verified +/** The initial size of large pages, in bytes. This value should be verified * at runtime by calling hv_sysconf(HV_SYSCONF_PAGE_SIZE_LARGE). + * It may also be modified when installing a new context. */ -#define HV_PAGE_SIZE_LARGE (__HV_SIZE_ONE << HV_LOG2_PAGE_SIZE_LARGE) +#define HV_DEFAULT_PAGE_SIZE_LARGE \ + (__HV_SIZE_ONE << HV_LOG2_DEFAULT_PAGE_SIZE_LARGE) + +#if CHIP_VA_WIDTH() > 32 + +/** The log2 of the initial size of jumbo pages, in bytes. + * See HV_DEFAULT_PAGE_SIZE_JUMBO. + */ +#define HV_LOG2_DEFAULT_PAGE_SIZE_JUMBO 32 + +/** The initial size of jumbo pages, in bytes. This value should + * be verified at runtime by calling hv_sysconf(HV_SYSCONF_PAGE_SIZE_JUMBO). + * It may also be modified when installing a new context. + */ +#define HV_DEFAULT_PAGE_SIZE_JUMBO \ + (__HV_SIZE_ONE << HV_LOG2_DEFAULT_PAGE_SIZE_JUMBO) + +#endif /** The log2 of the granularity at which page tables must be aligned; * in other words, the CPA for a page table must have this many zero @@ -280,8 +300,11 @@ #define HV_DISPATCH_GET_IPI_PTE 56 #endif +/** hv_set_pte_super_shift */ +#define HV_DISPATCH_SET_PTE_SUPER_SHIFT 57 + /** One more than the largest dispatch value */ -#define _HV_DISPATCH_END 57 +#define _HV_DISPATCH_END 58 #ifndef __ASSEMBLER__ @@ -401,7 +424,18 @@ typedef enum { * that the temperature has hit an upper limit and is no longer being * accurately tracked. */ - HV_SYSCONF_BOARD_TEMP = 6 + HV_SYSCONF_BOARD_TEMP = 6, + + /** Legal page size bitmask for hv_install_context(). + * For example, if 16KB and 64KB small pages are supported, + * it would return "HV_CTX_PG_SM_16K | HV_CTX_PG_SM_64K". + */ + HV_SYSCONF_VALID_PAGE_SIZES = 7, + + /** The size of jumbo pages, in bytes. + * If no jumbo pages are available, zero will be returned. + */ + HV_SYSCONF_PAGE_SIZE_JUMBO = 8, } HV_SysconfQuery; @@ -474,7 +508,19 @@ typedef enum { HV_CONFSTR_SWITCH_CONTROL = 14, /** Chip revision level. */ - HV_CONFSTR_CHIP_REV = 15 + HV_CONFSTR_CHIP_REV = 15, + + /** CPU module part number. */ + HV_CONFSTR_CPUMOD_PART_NUM = 16, + + /** CPU module serial number. */ + HV_CONFSTR_CPUMOD_SERIAL_NUM = 17, + + /** CPU module revision level. */ + HV_CONFSTR_CPUMOD_REV = 18, + + /** Human-readable CPU module description. */ + HV_CONFSTR_CPUMOD_DESC = 19 } HV_ConfstrQuery; @@ -494,11 +540,16 @@ int hv_confstr(HV_ConfstrQuery query, HV_VirtAddr buf, int len); /** Tile coordinate */ typedef struct { +#ifndef __BIG_ENDIAN__ /** X coordinate, relative to supervisor's top-left coordinate */ int x; /** Y coordinate, relative to supervisor's top-left coordinate */ int y; +#else + int y; + int x; +#endif } HV_Coord; @@ -649,6 +700,12 @@ void hv_set_rtc(HV_RTCTime time); * new page table does not need to contain any mapping for the * hv_install_context address itself. * + * At most one HV_CTX_PG_SM_* flag may be specified in "flags"; + * if multiple flags are specified, HV_EINVAL is returned. + * Specifying none of the flags results in using the default page size. + * All cores participating in a given client must request the same + * page size, or the results are undefined. + * * @param page_table Root of the page table. * @param access PTE providing info on how to read the page table. This * value must be consistent between multiple tiles sharing a page table, @@ -667,8 +724,36 @@ int hv_install_context(HV_PhysAddr page_table, HV_PTE access, HV_ASID asid, #define HV_CTX_DIRECTIO 0x1 /**< Direct I/O requests are accepted from PL0. */ +#define HV_CTX_PG_SM_4K 0x10 /**< Use 4K small pages, if available. */ +#define HV_CTX_PG_SM_16K 0x20 /**< Use 16K small pages, if available. */ +#define HV_CTX_PG_SM_64K 0x40 /**< Use 64K small pages, if available. */ +#define HV_CTX_PG_SM_MASK 0xf0 /**< Mask of all possible small pages. */ + #ifndef __ASSEMBLER__ + +/** Set the number of pages ganged together by HV_PTE_SUPER at a + * particular level of the page table. + * + * The current TILE-Gx hardware only supports powers of four + * (i.e. log2_count must be a multiple of two), and the requested + * "super" page size must be less than the span of the next level in + * the page table. The largest size that can be requested is 64GB. + * + * The shift value is initially "0" for all page table levels, + * indicating that the HV_PTE_SUPER bit is effectively ignored. + * + * If you change the count from one non-zero value to another, the + * hypervisor will flush the entire TLB and TSB to avoid confusion. + * + * @param level Page table level (0, 1, or 2) + * @param log2_count Base-2 log of the number of pages to gang together, + * i.e. how much to shift left the base page size for the super page size. + * @return Zero on success, or a hypervisor error code on failure. + */ +int hv_set_pte_super_shift(int level, int log2_count); + + /** Value returned from hv_inquire_context(). */ typedef struct { @@ -986,8 +1071,13 @@ HV_VirtAddrRange hv_inquire_virtual(int idx); /** A range of ASID values. */ typedef struct { +#ifndef __BIG_ENDIAN__ HV_ASID start; /**< First ASID in the range. */ unsigned int size; /**< Number of ASIDs. Zero for an invalid range. */ +#else + unsigned int size; /**< Number of ASIDs. Zero for an invalid range. */ + HV_ASID start; /**< First ASID in the range. */ +#endif } HV_ASIDRange; /** Returns information about a range of ASIDs. @@ -1238,11 +1328,14 @@ HV_Errno hv_set_command_line(HV_VirtAddr buf, int length); * with the existing priority pages) or "red/black" (if they don't). * The bitmask provides information on which parts of the cache * have been used for pinned pages so far on this tile; if (1 << N) - * appears in the bitmask, that indicates that a page has been marked - * "priority" whose PFN equals N, mod 8. + * appears in the bitmask, that indicates that a 4KB region of the + * cache starting at (N * 4KB) is in use by a "priority" page. + * The portion of cache used by a particular page can be computed + * by taking the page's PA, modulo CHIP_L2_CACHE_SIZE(), and setting + * all the "4KB" bits corresponding to the actual page size. * @param bitmask A bitmap of priority page set values */ -void hv_set_caching(unsigned int bitmask); +void hv_set_caching(unsigned long bitmask); /** Zero out a specified number of pages. @@ -1308,6 +1401,7 @@ typedef enum /** Message recipient. */ typedef struct { +#ifndef __BIG_ENDIAN__ /** X coordinate, relative to supervisor's top-left coordinate */ unsigned int x:11; @@ -1316,6 +1410,11 @@ typedef struct /** Status of this recipient */ HV_Recip_State state:10; +#else //__BIG_ENDIAN__ + HV_Recip_State state:10; + unsigned int y:11; + unsigned int x:11; +#endif } HV_Recipient; /** Send a message to a set of recipients. @@ -1851,12 +1950,12 @@ int hv_flush_remote(HV_PhysAddr cache_pa, unsigned long cache_control, #define HV_PTE_INDEX_USER 10 /**< Page is user-accessible */ #define HV_PTE_INDEX_ACCESSED 11 /**< Page has been accessed */ #define HV_PTE_INDEX_DIRTY 12 /**< Page has been written */ - /* Bits 13-15 are reserved for + /* Bits 13-14 are reserved for future use. */ +#define HV_PTE_INDEX_SUPER 15 /**< Pages ganged together for TLB */ #define HV_PTE_INDEX_MODE 16 /**< Page mode; see HV_PTE_MODE_xxx */ #define HV_PTE_MODE_BITS 3 /**< Number of bits in mode */ - /* Bit 19 is reserved for - future use. */ +#define HV_PTE_INDEX_CLIENT2 19 /**< Page client state 2 */ #define HV_PTE_INDEX_LOTAR 20 /**< Page's LOTAR; must be high bits of word */ #define HV_PTE_LOTAR_BITS 12 /**< Number of bits in a LOTAR */ @@ -1869,15 +1968,6 @@ int hv_flush_remote(HV_PhysAddr cache_pa, unsigned long cache_control, of word */ #define HV_PTE_PTFN_BITS 29 /**< Number of bits in a PTFN */ -/** Position of the PFN field within the PTE (subset of the PTFN). */ -#define HV_PTE_INDEX_PFN (HV_PTE_INDEX_PTFN + (HV_LOG2_PAGE_SIZE_SMALL - \ - HV_LOG2_PAGE_TABLE_ALIGN)) - -/** Length of the PFN field within the PTE (subset of the PTFN). */ -#define HV_PTE_INDEX_PFN_BITS (HV_PTE_INDEX_PTFN_BITS - \ - (HV_LOG2_PAGE_SIZE_SMALL - \ - HV_LOG2_PAGE_TABLE_ALIGN)) - /* * Legal values for the PTE's mode field */ @@ -1957,7 +2047,10 @@ int hv_flush_remote(HV_PhysAddr cache_pa, unsigned long cache_control, /** Does this PTE map a page? * - * If this bit is set in the level-1 page table, the entry should be + * If this bit is set in a level-0 page table, the entry should be + * interpreted as a level-2 page table entry mapping a jumbo page. + * + * If this bit is set in a level-1 page table, the entry should be * interpreted as a level-2 page table entry mapping a large page. * * This bit should not be modified by the client while PRESENT is set, as @@ -1967,6 +2060,18 @@ int hv_flush_remote(HV_PhysAddr cache_pa, unsigned long cache_control, */ #define HV_PTE_PAGE (__HV_PTE_ONE << HV_PTE_INDEX_PAGE) +/** Does this PTE implicitly reference multiple pages? + * + * If this bit is set in the page table (either in the level-2 page table, + * or in a higher level page table in conjunction with the PAGE bit) + * then the PTE specifies a range of contiguous pages, not a single page. + * The hv_set_pte_super_shift() allows you to specify the count for + * each level of the page table. + * + * Note: this bit is not supported on TILEPro systems. + */ +#define HV_PTE_SUPER (__HV_PTE_ONE << HV_PTE_INDEX_SUPER) + /** Is this a global (non-ASID) mapping? * * If this bit is set, the translations established by this PTE will @@ -2046,6 +2151,13 @@ int hv_flush_remote(HV_PhysAddr cache_pa, unsigned long cache_control, */ #define HV_PTE_CLIENT1 (__HV_PTE_ONE << HV_PTE_INDEX_CLIENT1) +/** Client-private bit in PTE. + * + * This bit is guaranteed not to be inspected or modified by the + * hypervisor. + */ +#define HV_PTE_CLIENT2 (__HV_PTE_ONE << HV_PTE_INDEX_CLIENT2) + /** Non-coherent (NC) bit in PTE. * * If this bit is set, the mapping that is set up will be non-coherent @@ -2178,8 +2290,10 @@ hv_pte_clear_##name(HV_PTE pte) \ */ _HV_BIT(present, PRESENT) _HV_BIT(page, PAGE) +_HV_BIT(super, SUPER) _HV_BIT(client0, CLIENT0) _HV_BIT(client1, CLIENT1) +_HV_BIT(client2, CLIENT2) _HV_BIT(migrating, MIGRATING) _HV_BIT(nc, NC) _HV_BIT(readable, READABLE) @@ -2222,40 +2336,11 @@ hv_pte_set_mode(HV_PTE pte, unsigned int val) * * This field contains the upper bits of the CPA (client physical * address) of the target page; the complete CPA is this field with - * HV_LOG2_PAGE_SIZE_SMALL zero bits appended to it. - * - * For PTEs in a level-1 page table where the Page bit is set, the - * CPA must be aligned modulo the large page size. - */ -static __inline unsigned int -hv_pte_get_pfn(const HV_PTE pte) -{ - return pte.val >> HV_PTE_INDEX_PFN; -} - - -/** Set the page frame number into a PTE. See hv_pte_get_pfn. */ -static __inline HV_PTE -hv_pte_set_pfn(HV_PTE pte, unsigned int val) -{ - /* - * Note that the use of "PTFN" in the next line is intentional; we - * don't want any garbage lower bits left in that field. - */ - pte.val &= ~(((1ULL << HV_PTE_PTFN_BITS) - 1) << HV_PTE_INDEX_PTFN); - pte.val |= (__hv64) val << HV_PTE_INDEX_PFN; - return pte; -} - -/** Get the page table frame number from the PTE. - * - * This field contains the upper bits of the CPA (client physical - * address) of the target page table; the complete CPA is this field with - * with HV_PAGE_TABLE_ALIGN zero bits appended to it. + * HV_LOG2_PAGE_TABLE_ALIGN zero bits appended to it. * - * For PTEs in a level-1 page table when the Page bit is not set, the - * CPA must be aligned modulo the sticter of HV_PAGE_TABLE_ALIGN and - * the level-2 page table size. + * For all PTEs in the lowest-level page table, and for all PTEs with + * the Page bit set in all page tables, the CPA must be aligned modulo + * the relevant page size. */ static __inline unsigned long hv_pte_get_ptfn(const HV_PTE pte) @@ -2263,7 +2348,6 @@ hv_pte_get_ptfn(const HV_PTE pte) return pte.val >> HV_PTE_INDEX_PTFN; } - /** Set the page table frame number into a PTE. See hv_pte_get_ptfn. */ static __inline HV_PTE hv_pte_set_ptfn(HV_PTE pte, unsigned long val) @@ -2273,6 +2357,20 @@ hv_pte_set_ptfn(HV_PTE pte, unsigned long val) return pte; } +/** Get the client physical address from the PTE. See hv_pte_set_ptfn. */ +static __inline HV_PhysAddr +hv_pte_get_pa(const HV_PTE pte) +{ + return (__hv64) hv_pte_get_ptfn(pte) << HV_LOG2_PAGE_TABLE_ALIGN; +} + +/** Set the client physical address into a PTE. See hv_pte_get_ptfn. */ +static __inline HV_PTE +hv_pte_set_pa(HV_PTE pte, HV_PhysAddr pa) +{ + return hv_pte_set_ptfn(pte, pa >> HV_LOG2_PAGE_TABLE_ALIGN); +} + /** Get the remote tile caching this page. * @@ -2308,28 +2406,20 @@ hv_pte_set_lotar(HV_PTE pte, unsigned int val) #endif /* !__ASSEMBLER__ */ -/** Converts a client physical address to a pfn. */ -#define HV_CPA_TO_PFN(p) ((p) >> HV_LOG2_PAGE_SIZE_SMALL) - -/** Converts a pfn to a client physical address. */ -#define HV_PFN_TO_CPA(p) (((HV_PhysAddr)(p)) << HV_LOG2_PAGE_SIZE_SMALL) - /** Converts a client physical address to a ptfn. */ #define HV_CPA_TO_PTFN(p) ((p) >> HV_LOG2_PAGE_TABLE_ALIGN) /** Converts a ptfn to a client physical address. */ #define HV_PTFN_TO_CPA(p) (((HV_PhysAddr)(p)) << HV_LOG2_PAGE_TABLE_ALIGN) -/** Converts a ptfn to a pfn. */ -#define HV_PTFN_TO_PFN(p) \ - ((p) >> (HV_LOG2_PAGE_SIZE_SMALL - HV_LOG2_PAGE_TABLE_ALIGN)) - -/** Converts a pfn to a ptfn. */ -#define HV_PFN_TO_PTFN(p) \ - ((p) << (HV_LOG2_PAGE_SIZE_SMALL - HV_LOG2_PAGE_TABLE_ALIGN)) - #if CHIP_VA_WIDTH() > 32 +/* + * Note that we currently do not allow customizing the page size + * of the L0 pages, but fix them at 4GB, so we do not use the + * "_HV_xxx" nomenclature for the L0 macros. + */ + /** Log number of HV_PTE entries in L0 page table */ #define HV_LOG2_L0_ENTRIES (CHIP_VA_WIDTH() - HV_LOG2_L1_SPAN) @@ -2359,69 +2449,104 @@ hv_pte_set_lotar(HV_PTE pte, unsigned int val) #endif /* CHIP_VA_WIDTH() > 32 */ /** Log number of HV_PTE entries in L1 page table */ -#define HV_LOG2_L1_ENTRIES (HV_LOG2_L1_SPAN - HV_LOG2_PAGE_SIZE_LARGE) +#define _HV_LOG2_L1_ENTRIES(log2_page_size_large) \ + (HV_LOG2_L1_SPAN - log2_page_size_large) /** Number of HV_PTE entries in L1 page table */ -#define HV_L1_ENTRIES (1 << HV_LOG2_L1_ENTRIES) +#define _HV_L1_ENTRIES(log2_page_size_large) \ + (1 << _HV_LOG2_L1_ENTRIES(log2_page_size_large)) /** Log size of L1 page table in bytes */ -#define HV_LOG2_L1_SIZE (HV_LOG2_PTE_SIZE + HV_LOG2_L1_ENTRIES) +#define _HV_LOG2_L1_SIZE(log2_page_size_large) \ + (HV_LOG2_PTE_SIZE + _HV_LOG2_L1_ENTRIES(log2_page_size_large)) /** Size of L1 page table in bytes */ -#define HV_L1_SIZE (1 << HV_LOG2_L1_SIZE) +#define _HV_L1_SIZE(log2_page_size_large) \ + (1 << _HV_LOG2_L1_SIZE(log2_page_size_large)) /** Log number of HV_PTE entries in level-2 page table */ -#define HV_LOG2_L2_ENTRIES (HV_LOG2_PAGE_SIZE_LARGE - HV_LOG2_PAGE_SIZE_SMALL) +#define _HV_LOG2_L2_ENTRIES(log2_page_size_large, log2_page_size_small) \ + (log2_page_size_large - log2_page_size_small) /** Number of HV_PTE entries in level-2 page table */ -#define HV_L2_ENTRIES (1 << HV_LOG2_L2_ENTRIES) +#define _HV_L2_ENTRIES(log2_page_size_large, log2_page_size_small) \ + (1 << _HV_LOG2_L2_ENTRIES(log2_page_size_large, log2_page_size_small)) /** Log size of level-2 page table in bytes */ -#define HV_LOG2_L2_SIZE (HV_LOG2_PTE_SIZE + HV_LOG2_L2_ENTRIES) +#define _HV_LOG2_L2_SIZE(log2_page_size_large, log2_page_size_small) \ + (HV_LOG2_PTE_SIZE + \ + _HV_LOG2_L2_ENTRIES(log2_page_size_large, log2_page_size_small)) /** Size of level-2 page table in bytes */ -#define HV_L2_SIZE (1 << HV_LOG2_L2_SIZE) +#define _HV_L2_SIZE(log2_page_size_large, log2_page_size_small) \ + (1 << _HV_LOG2_L2_SIZE(log2_page_size_large, log2_page_size_small)) #ifdef __ASSEMBLER__ #if CHIP_VA_WIDTH() > 32 /** Index in L1 for a specific VA */ -#define HV_L1_INDEX(va) \ - (((va) >> HV_LOG2_PAGE_SIZE_LARGE) & (HV_L1_ENTRIES - 1)) +#define _HV_L1_INDEX(va, log2_page_size_large) \ + (((va) >> log2_page_size_large) & (_HV_L1_ENTRIES(log2_page_size_large) - 1)) #else /* CHIP_VA_WIDTH() > 32 */ /** Index in L1 for a specific VA */ -#define HV_L1_INDEX(va) \ - (((va) >> HV_LOG2_PAGE_SIZE_LARGE)) +#define _HV_L1_INDEX(va, log2_page_size_large) \ + (((va) >> log2_page_size_large)) #endif /* CHIP_VA_WIDTH() > 32 */ /** Index in level-2 page table for a specific VA */ -#define HV_L2_INDEX(va) \ - (((va) >> HV_LOG2_PAGE_SIZE_SMALL) & (HV_L2_ENTRIES - 1)) +#define _HV_L2_INDEX(va, log2_page_size_large, log2_page_size_small) \ + (((va) >> log2_page_size_small) & \ + (_HV_L2_ENTRIES(log2_page_size_large, log2_page_size_small) - 1)) #else /* __ASSEMBLER __ */ #if CHIP_VA_WIDTH() > 32 /** Index in L1 for a specific VA */ -#define HV_L1_INDEX(va) \ - (((HV_VirtAddr)(va) >> HV_LOG2_PAGE_SIZE_LARGE) & (HV_L1_ENTRIES - 1)) +#define _HV_L1_INDEX(va, log2_page_size_large) \ + (((HV_VirtAddr)(va) >> log2_page_size_large) & \ + (_HV_L1_ENTRIES(log2_page_size_large) - 1)) #else /* CHIP_VA_WIDTH() > 32 */ /** Index in L1 for a specific VA */ -#define HV_L1_INDEX(va) \ - (((HV_VirtAddr)(va) >> HV_LOG2_PAGE_SIZE_LARGE)) +#define _HV_L1_INDEX(va, log2_page_size_large) \ + (((HV_VirtAddr)(va) >> log2_page_size_large)) #endif /* CHIP_VA_WIDTH() > 32 */ /** Index in level-2 page table for a specific VA */ -#define HV_L2_INDEX(va) \ - (((HV_VirtAddr)(va) >> HV_LOG2_PAGE_SIZE_SMALL) & (HV_L2_ENTRIES - 1)) +#define _HV_L2_INDEX(va, log2_page_size_large, log2_page_size_small) \ + (((HV_VirtAddr)(va) >> log2_page_size_small) & \ + (_HV_L2_ENTRIES(log2_page_size_large, log2_page_size_small) - 1)) #endif /* __ASSEMBLER __ */ -#endif /* _TILE_HV_H */ +/** Position of the PFN field within the PTE (subset of the PTFN). */ +#define _HV_PTE_INDEX_PFN(log2_page_size) \ + (HV_PTE_INDEX_PTFN + (log2_page_size - HV_LOG2_PAGE_TABLE_ALIGN)) + +/** Length of the PFN field within the PTE (subset of the PTFN). */ +#define _HV_PTE_INDEX_PFN_BITS(log2_page_size) \ + (HV_PTE_INDEX_PTFN_BITS - (log2_page_size - HV_LOG2_PAGE_TABLE_ALIGN)) + +/** Converts a client physical address to a pfn. */ +#define _HV_CPA_TO_PFN(p, log2_page_size) ((p) >> log2_page_size) + +/** Converts a pfn to a client physical address. */ +#define _HV_PFN_TO_CPA(p, log2_page_size) \ + (((HV_PhysAddr)(p)) << log2_page_size) + +/** Converts a ptfn to a pfn. */ +#define _HV_PTFN_TO_PFN(p, log2_page_size) \ + ((p) >> (log2_page_size - HV_LOG2_PAGE_TABLE_ALIGN)) + +/** Converts a pfn to a ptfn. */ +#define _HV_PFN_TO_PTFN(p, log2_page_size) \ + ((p) << (log2_page_size - HV_LOG2_PAGE_TABLE_ALIGN)) + +#endif /* _HV_HV_H */ |