From 3b885787ea4112eaa80945999ea0901bf742707f Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Mon, 12 Oct 2009 13:26:31 -0700 Subject: net: Generalize socket rx gap / receive queue overflow cmsg Create a new socket level option to report number of queue overflows Recently I augmented the AF_PACKET protocol to report the number of frames lost on the socket receive queue between any two enqueued frames. This value was exported via a SOL_PACKET level cmsg. AFter I completed that work it was requested that this feature be generalized so that any datagram oriented socket could make use of this option. As such I've created this patch, It creates a new SOL_SOCKET level option called SO_RXQ_OVFL, which when enabled exports a SOL_SOCKET level cmsg that reports the nubmer of times the sk_receive_queue overflowed between any two given frames. It also augments the AF_PACKET protocol to take advantage of this new feature (as it previously did not touch sk->sk_drops, which this patch uses to record the overflow count). Tested successfully by me. Notes: 1) Unlike my previous patch, this patch simply records the sk_drops value, which is not a number of drops between packets, but rather a total number of drops. Deltas must be computed in user space. 2) While this patch currently works with datagram oriented protocols, it will also be accepted by non-datagram oriented protocols. I'm not sure if thats agreeable to everyone, but my argument in favor of doing so is that, for those protocols which aren't applicable to this option, sk_drops will always be zero, and reporting no drops on a receive queue that isn't used for those non-participating protocols seems reasonable to me. This also saves us having to code in a per-protocol opt in mechanism. 3) This applies cleanly to net-next assuming that commit 977750076d98c7ff6cbda51858bb5a5894a9d9ab (my af packet cmsg patch) is reverted Signed-off-by: Neil Horman Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- arch/sparc/include/asm/socket.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/socket.h b/arch/sparc/include/asm/socket.h index 3a5ae3d1208..9d3fefcff2f 100644 --- a/arch/sparc/include/asm/socket.h +++ b/arch/sparc/include/asm/socket.h @@ -56,6 +56,8 @@ #define SO_TIMESTAMPING 0x0023 #define SCM_TIMESTAMPING SO_TIMESTAMPING +#define SO_RXQ_OVFL 0x0024 + /* Security levels - as per NRL IPv6 - don't actually do anything */ #define SO_SECURITY_AUTHENTICATION 0x5001 #define SO_SECURITY_ENCRYPTION_TRANSPORT 0x5002 -- cgit v1.2.3-70-g09d2 From a2e2725541fad72416326798c2d7fa4dafb7d337 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 12 Oct 2009 23:40:10 -0700 Subject: net: Introduce recvmmsg socket syscall MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Meaning receive multiple messages, reducing the number of syscalls and net stack entry/exit operations. Next patches will introduce mechanisms where protocols that want to optimize this operation will provide an unlocked_recvmsg operation. This takes into account comments made by: . Paul Moore: sock_recvmsg is called only for the first datagram, sock_recvmsg_nosec is used for the rest. . Caitlin Bestler: recvmmsg now has a struct timespec timeout, that works in the same fashion as the ppoll one. If the underlying protocol returns a datagram with MSG_OOB set, this will make recvmmsg return right away with as many datagrams (+ the OOB one) it has received so far. . Rémi Denis-Courmont & Steven Whitehouse: If we receive N < vlen datagrams and then recvmsg returns an error, recvmmsg will return the successfully received datagrams, store the error and return it in the next call. This paves the way for a subsequent optimization, sk_prot->unlocked_recvmsg, where we will be able to acquire the lock only at batch start and end, not at every underlying recvmsg call. Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: David S. Miller --- arch/alpha/kernel/systbls.S | 1 + arch/arm/kernel/calls.S | 1 + arch/avr32/kernel/syscall_table.S | 1 + arch/blackfin/mach-common/entry.S | 1 + arch/ia64/kernel/entry.S | 1 + arch/microblaze/kernel/syscall_table.S | 1 + arch/mips/kernel/scall32-o32.S | 1 + arch/mips/kernel/scall64-64.S | 1 + arch/mips/kernel/scall64-n32.S | 1 + arch/mips/kernel/scall64-o32.S | 1 + arch/sh/kernel/syscalls_64.S | 1 + arch/sparc/kernel/systbls_32.S | 2 +- arch/sparc/kernel/systbls_64.S | 4 +- arch/x86/ia32/ia32entry.S | 1 + arch/x86/include/asm/unistd_32.h | 3 +- arch/x86/include/asm/unistd_64.h | 2 + arch/x86/kernel/syscall_table_32.S | 1 + arch/xtensa/include/asm/unistd.h | 4 +- include/linux/net.h | 1 + include/linux/socket.h | 10 ++ include/linux/syscalls.h | 4 + include/net/compat.h | 8 ++ kernel/sys_ni.c | 2 + net/compat.c | 33 ++++- net/socket.c | 225 +++++++++++++++++++++++++++------ 25 files changed, 261 insertions(+), 50 deletions(-) (limited to 'arch/sparc') diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S index 95c9aef1c10..cda6b8b3d57 100644 --- a/arch/alpha/kernel/systbls.S +++ b/arch/alpha/kernel/systbls.S @@ -497,6 +497,7 @@ sys_call_table: .quad sys_signalfd .quad sys_ni_syscall .quad sys_eventfd + .quad sys_recvmmsg .size sys_call_table, . - sys_call_table .type sys_call_table, @object diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index fafce1b5c69..f58c1156e77 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -374,6 +374,7 @@ CALL(sys_pwritev) CALL(sys_rt_tgsigqueueinfo) CALL(sys_perf_event_open) +/* 365 */ CALL(sys_recvmmsg) #ifndef syscalls_counted .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls #define syscalls_counted diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S index 7ee0057613b..e76bad16b0f 100644 --- a/arch/avr32/kernel/syscall_table.S +++ b/arch/avr32/kernel/syscall_table.S @@ -295,4 +295,5 @@ sys_call_table: .long sys_signalfd .long sys_ni_syscall /* 280, was sys_timerfd */ .long sys_eventfd + .long sys_recvmmsg .long sys_ni_syscall /* r8 is saturated at nr_syscalls */ diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S index 1e7cac23e25..48692724b74 100644 --- a/arch/blackfin/mach-common/entry.S +++ b/arch/blackfin/mach-common/entry.S @@ -1621,6 +1621,7 @@ ENTRY(_sys_call_table) .long _sys_pwritev .long _sys_rt_tgsigqueueinfo .long _sys_perf_event_open + .long _sys_recvmmsg /* 370 */ .rept NR_syscalls-(.-_sys_call_table)/4 .long _sys_ni_syscall diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S index d0e7d37017b..d75b872ca4d 100644 --- a/arch/ia64/kernel/entry.S +++ b/arch/ia64/kernel/entry.S @@ -1806,6 +1806,7 @@ sys_call_table: data8 sys_preadv data8 sys_pwritev // 1320 data8 sys_rt_tgsigqueueinfo + data8 sys_recvmmsg .org sys_call_table + 8*NR_syscalls // guard against failures to increase NR_syscalls #endif /* __IA64_ASM_PARAVIRTUALIZED_NATIVE */ diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S index ecec1915513..c1ab1dc1089 100644 --- a/arch/microblaze/kernel/syscall_table.S +++ b/arch/microblaze/kernel/syscall_table.S @@ -371,3 +371,4 @@ ENTRY(sys_call_table) .long sys_ni_syscall .long sys_rt_tgsigqueueinfo /* 365 */ .long sys_perf_event_open + .long sys_recvmmsg diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index fd2a9bb620d..17202bbe843 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -583,6 +583,7 @@ einval: li v0, -ENOSYS sys sys_rt_tgsigqueueinfo 4 sys sys_perf_event_open 5 sys sys_accept4 4 + sys sys_recvmmsg 5 .endm /* We pre-compute the number of _instruction_ bytes needed to diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S index 18bf7f32c5e..a8a6c596eb0 100644 --- a/arch/mips/kernel/scall64-64.S +++ b/arch/mips/kernel/scall64-64.S @@ -420,4 +420,5 @@ sys_call_table: PTR sys_rt_tgsigqueueinfo PTR sys_perf_event_open PTR sys_accept4 + PTR sys_recvmmsg .size sys_call_table,.-sys_call_table diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index 6ebc0797669..5154e64f7cf 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -418,4 +418,5 @@ EXPORT(sysn32_call_table) PTR compat_sys_rt_tgsigqueueinfo /* 5295 */ PTR sys_perf_event_open PTR sys_accept4 + PTR compat_sys_recvmmsg .size sysn32_call_table,.-sysn32_call_table diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index 9bbf9775e0b..d0eff53d7cb 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -538,4 +538,5 @@ sys_call_table: PTR compat_sys_rt_tgsigqueueinfo PTR sys_perf_event_open PTR sys_accept4 + PTR compat_sys_recvmmsg .size sys_call_table,.-sys_call_table diff --git a/arch/sh/kernel/syscalls_64.S b/arch/sh/kernel/syscalls_64.S index 5bfde6c7749..07d2aaea9ae 100644 --- a/arch/sh/kernel/syscalls_64.S +++ b/arch/sh/kernel/syscalls_64.S @@ -391,3 +391,4 @@ sys_call_table: .long sys_pwritev .long sys_rt_tgsigqueueinfo .long sys_perf_event_open + .long sys_recvmmsg /* 365 */ diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S index 0f1658d3749..ceb1530f8aa 100644 --- a/arch/sparc/kernel/systbls_32.S +++ b/arch/sparc/kernel/systbls_32.S @@ -82,5 +82,5 @@ sys_call_table: /*310*/ .long sys_utimensat, sys_signalfd, sys_timerfd_create, sys_eventfd, sys_fallocate /*315*/ .long sys_timerfd_settime, sys_timerfd_gettime, sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .long sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv -/*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open +/*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S index 009825f6e73..f37bef747e6 100644 --- a/arch/sparc/kernel/systbls_64.S +++ b/arch/sparc/kernel/systbls_64.S @@ -83,7 +83,7 @@ sys_call_table32: /*310*/ .word compat_sys_utimensat, compat_sys_signalfd, sys_timerfd_create, sys_eventfd, compat_sys_fallocate .word compat_sys_timerfd_settime, compat_sys_timerfd_gettime, compat_sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, compat_sys_preadv - .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open + .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open, compat_sys_recvmmsg #endif /* CONFIG_COMPAT */ @@ -158,4 +158,4 @@ sys_call_table: /*310*/ .word sys_utimensat, sys_signalfd, sys_timerfd_create, sys_eventfd, sys_fallocate .word sys_timerfd_settime, sys_timerfd_gettime, sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv - .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open + .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S index 74619c4f9fd..11a6c79d5f4 100644 --- a/arch/x86/ia32/ia32entry.S +++ b/arch/x86/ia32/ia32entry.S @@ -832,4 +832,5 @@ ia32_sys_call_table: .quad compat_sys_pwritev .quad compat_sys_rt_tgsigqueueinfo /* 335 */ .quad sys_perf_event_open + .quad compat_sys_recvmmsg ia32_syscall_end: diff --git a/arch/x86/include/asm/unistd_32.h b/arch/x86/include/asm/unistd_32.h index 6fb3c209a7e..3baf379fa84 100644 --- a/arch/x86/include/asm/unistd_32.h +++ b/arch/x86/include/asm/unistd_32.h @@ -342,10 +342,11 @@ #define __NR_pwritev 334 #define __NR_rt_tgsigqueueinfo 335 #define __NR_perf_event_open 336 +#define __NR_recvmmsg 337 #ifdef __KERNEL__ -#define NR_syscalls 337 +#define NR_syscalls 338 #define __ARCH_WANT_IPC_PARSE_VERSION #define __ARCH_WANT_OLD_READDIR diff --git a/arch/x86/include/asm/unistd_64.h b/arch/x86/include/asm/unistd_64.h index 8d3ad0adbc6..4843f7ba754 100644 --- a/arch/x86/include/asm/unistd_64.h +++ b/arch/x86/include/asm/unistd_64.h @@ -661,6 +661,8 @@ __SYSCALL(__NR_pwritev, sys_pwritev) __SYSCALL(__NR_rt_tgsigqueueinfo, sys_rt_tgsigqueueinfo) #define __NR_perf_event_open 298 __SYSCALL(__NR_perf_event_open, sys_perf_event_open) +#define __NR_recvmmsg 299 +__SYSCALL(__NR_recvmmsg, sys_recvmmsg) #ifndef __NO_STUBS #define __ARCH_WANT_OLD_READDIR diff --git a/arch/x86/kernel/syscall_table_32.S b/arch/x86/kernel/syscall_table_32.S index 0157cd26d7c..70c2125d55b 100644 --- a/arch/x86/kernel/syscall_table_32.S +++ b/arch/x86/kernel/syscall_table_32.S @@ -336,3 +336,4 @@ ENTRY(sys_call_table) .long sys_pwritev .long sys_rt_tgsigqueueinfo /* 335 */ .long sys_perf_event_open + .long sys_recvmmsg diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h index c092c8fbb2c..4e55dc76302 100644 --- a/arch/xtensa/include/asm/unistd.h +++ b/arch/xtensa/include/asm/unistd.h @@ -681,8 +681,10 @@ __SYSCALL(304, sys_signalfd, 3) __SYSCALL(305, sys_ni_syscall, 0) #define __NR_eventfd 306 __SYSCALL(306, sys_eventfd, 1) +#define __NR_recvmmsg 307 +__SYSCALL(307, sys_recvmmsg, 5) -#define __NR_syscall_count 307 +#define __NR_syscall_count 308 /* * sysxtensa syscall handler diff --git a/include/linux/net.h b/include/linux/net.h index 529a0931711..b42bb60fe92 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -41,6 +41,7 @@ #define SYS_SENDMSG 16 /* sys_sendmsg(2) */ #define SYS_RECVMSG 17 /* sys_recvmsg(2) */ #define SYS_ACCEPT4 18 /* sys_accept4(2) */ +#define SYS_RECVMMSG 19 /* sys_recvmmsg(2) */ typedef enum { SS_FREE = 0, /* not allocated */ diff --git a/include/linux/socket.h b/include/linux/socket.h index 3273a0c5043..59966f12990 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -65,6 +65,12 @@ struct msghdr { unsigned msg_flags; }; +/* For recvmmsg/sendmmsg */ +struct mmsghdr { + struct msghdr msg_hdr; + unsigned msg_len; +}; + /* * POSIX 1003.1g - ancillary data object information * Ancillary data consits of a sequence of pairs of @@ -312,6 +318,10 @@ extern int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uadd extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr); extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); +struct timespec; + +extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, + unsigned int flags, struct timespec *timeout); #endif #endif /* not kernel and not glibc */ #endif /* _LINUX_SOCKET_H */ diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index a990ace1a83..714f063a3e6 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -25,6 +25,7 @@ struct linux_dirent64; struct list_head; struct msgbuf; struct msghdr; +struct mmsghdr; struct msqid_ds; struct new_utsname; struct nfsctl_arg; @@ -677,6 +678,9 @@ asmlinkage long sys_recv(int, void __user *, size_t, unsigned); asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *); asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned flags); +asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg, + unsigned int vlen, unsigned flags, + struct timespec __user *timeout); asmlinkage long sys_socket(int, int, int); asmlinkage long sys_socketpair(int, int, int, int __user *); asmlinkage long sys_socketcall(int call, unsigned long __user *args); diff --git a/include/net/compat.h b/include/net/compat.h index 7c3002832d0..9679f05e989 100644 --- a/include/net/compat.h +++ b/include/net/compat.h @@ -18,6 +18,11 @@ struct compat_msghdr { compat_uint_t msg_flags; }; +struct compat_mmsghdr { + struct compat_msghdr msg_hdr; + compat_uint_t msg_len; +}; + struct compat_cmsghdr { compat_size_t cmsg_len; compat_int_t cmsg_level; @@ -35,6 +40,9 @@ extern int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *); extern int verify_compat_iovec(struct msghdr *, struct iovec *, struct sockaddr *, int); extern asmlinkage long compat_sys_sendmsg(int,struct compat_msghdr __user *,unsigned); extern asmlinkage long compat_sys_recvmsg(int,struct compat_msghdr __user *,unsigned); +extern asmlinkage long compat_sys_recvmmsg(int, struct compat_mmsghdr __user *, + unsigned, unsigned, + struct timespec __user *); extern asmlinkage long compat_sys_getsockopt(int, int, int, char __user *, int __user *); extern int put_cmsg_compat(struct msghdr*, int, int, int, void *); diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index e06d0b8d195..f050ba85d42 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -48,8 +48,10 @@ cond_syscall(sys_shutdown); cond_syscall(sys_sendmsg); cond_syscall(compat_sys_sendmsg); cond_syscall(sys_recvmsg); +cond_syscall(sys_recvmmsg); cond_syscall(compat_sys_recvmsg); cond_syscall(compat_sys_recvfrom); +cond_syscall(compat_sys_recvmmsg); cond_syscall(sys_socketcall); cond_syscall(sys_futex); cond_syscall(compat_sys_futex); diff --git a/net/compat.c b/net/compat.c index a407c3addba..e13f5256fd2 100644 --- a/net/compat.c +++ b/net/compat.c @@ -727,10 +727,10 @@ EXPORT_SYMBOL(compat_mc_getsockopt); /* Argument list sizes for compat_sys_socketcall */ #define AL(x) ((x) * sizeof(u32)) -static unsigned char nas[19]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), +static unsigned char nas[20]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), AL(6),AL(2),AL(5),AL(5),AL(3),AL(3), - AL(4)}; + AL(4),AL(5)}; #undef AL asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags) @@ -755,13 +755,36 @@ asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len, return sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, addrlen); } +asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, + unsigned vlen, unsigned int flags, + struct timespec __user *timeout) +{ + int datagrams; + struct timespec ktspec; + struct compat_timespec __user *utspec = + (struct compat_timespec __user *)timeout; + + if (get_user(ktspec.tv_sec, &utspec->tv_sec) || + get_user(ktspec.tv_nsec, &utspec->tv_nsec)) + return -EFAULT; + + datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, + flags | MSG_CMSG_COMPAT, &ktspec); + if (datagrams > 0 && + (put_user(ktspec.tv_sec, &utspec->tv_sec) || + put_user(ktspec.tv_nsec, &utspec->tv_nsec))) + datagrams = -EFAULT; + + return datagrams; +} + asmlinkage long compat_sys_socketcall(int call, u32 __user *args) { int ret; u32 a[6]; u32 a0, a1; - if (call < SYS_SOCKET || call > SYS_ACCEPT4) + if (call < SYS_SOCKET || call > SYS_RECVMMSG) return -EINVAL; if (copy_from_user(a, args, nas[call])) return -EFAULT; @@ -823,6 +846,10 @@ asmlinkage long compat_sys_socketcall(int call, u32 __user *args) case SYS_RECVMSG: ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]); break; + case SYS_RECVMMSG: + ret = compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3], + compat_ptr(a[4])); + break; case SYS_ACCEPT4: ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]); break; diff --git a/net/socket.c b/net/socket.c index 80793569384..9dff31c9b79 100644 --- a/net/socket.c +++ b/net/socket.c @@ -683,10 +683,9 @@ void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk, } EXPORT_SYMBOL_GPL(sock_recv_ts_and_drops); -static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock, - struct msghdr *msg, size_t size, int flags) +static inline int __sock_recvmsg_nosec(struct kiocb *iocb, struct socket *sock, + struct msghdr *msg, size_t size, int flags) { - int err; struct sock_iocb *si = kiocb_to_siocb(iocb); si->sock = sock; @@ -695,13 +694,17 @@ static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock, si->size = size; si->flags = flags; - err = security_socket_recvmsg(sock, msg, size, flags); - if (err) - return err; - return sock->ops->recvmsg(iocb, sock, msg, size, flags); } +static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock, + struct msghdr *msg, size_t size, int flags) +{ + int err = security_socket_recvmsg(sock, msg, size, flags); + + return err ?: __sock_recvmsg_nosec(iocb, sock, msg, size, flags); +} + int sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, int flags) { @@ -717,6 +720,21 @@ int sock_recvmsg(struct socket *sock, struct msghdr *msg, return ret; } +static int sock_recvmsg_nosec(struct socket *sock, struct msghdr *msg, + size_t size, int flags) +{ + struct kiocb iocb; + struct sock_iocb siocb; + int ret; + + init_sync_kiocb(&iocb, NULL); + iocb.private = &siocb; + ret = __sock_recvmsg_nosec(&iocb, sock, msg, size, flags); + if (-EIOCBQUEUED == ret) + ret = wait_on_sync_kiocb(&iocb); + return ret; +} + int kernel_recvmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, size_t num, size_t size, int flags) { @@ -1983,22 +2001,15 @@ out: return err; } -/* - * BSD recvmsg interface - */ - -SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, - unsigned int, flags) +static int __sys_recvmsg(struct socket *sock, struct msghdr __user *msg, + struct msghdr *msg_sys, unsigned flags, int nosec) { struct compat_msghdr __user *msg_compat = (struct compat_msghdr __user *)msg; - struct socket *sock; struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov = iovstack; - struct msghdr msg_sys; unsigned long cmsg_ptr; int err, iov_size, total_len, len; - int fput_needed; /* kernel mode address */ struct sockaddr_storage addr; @@ -2008,27 +2019,23 @@ SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, int __user *uaddr_len; if (MSG_CMSG_COMPAT & flags) { - if (get_compat_msghdr(&msg_sys, msg_compat)) + if (get_compat_msghdr(msg_sys, msg_compat)) return -EFAULT; } - else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr))) + else if (copy_from_user(msg_sys, msg, sizeof(struct msghdr))) return -EFAULT; - sock = sockfd_lookup_light(fd, &err, &fput_needed); - if (!sock) - goto out; - err = -EMSGSIZE; - if (msg_sys.msg_iovlen > UIO_MAXIOV) - goto out_put; + if (msg_sys->msg_iovlen > UIO_MAXIOV) + goto out; /* Check whether to allocate the iovec area */ err = -ENOMEM; - iov_size = msg_sys.msg_iovlen * sizeof(struct iovec); - if (msg_sys.msg_iovlen > UIO_FASTIOV) { + iov_size = msg_sys->msg_iovlen * sizeof(struct iovec); + if (msg_sys->msg_iovlen > UIO_FASTIOV) { iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL); if (!iov) - goto out_put; + goto out; } /* @@ -2036,46 +2043,47 @@ SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, * kernel msghdr to use the kernel address space) */ - uaddr = (__force void __user *)msg_sys.msg_name; + uaddr = (__force void __user *)msg_sys->msg_name; uaddr_len = COMPAT_NAMELEN(msg); if (MSG_CMSG_COMPAT & flags) { - err = verify_compat_iovec(&msg_sys, iov, + err = verify_compat_iovec(msg_sys, iov, (struct sockaddr *)&addr, VERIFY_WRITE); } else - err = verify_iovec(&msg_sys, iov, + err = verify_iovec(msg_sys, iov, (struct sockaddr *)&addr, VERIFY_WRITE); if (err < 0) goto out_freeiov; total_len = err; - cmsg_ptr = (unsigned long)msg_sys.msg_control; - msg_sys.msg_flags = flags & (MSG_CMSG_CLOEXEC|MSG_CMSG_COMPAT); + cmsg_ptr = (unsigned long)msg_sys->msg_control; + msg_sys->msg_flags = flags & (MSG_CMSG_CLOEXEC|MSG_CMSG_COMPAT); if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; - err = sock_recvmsg(sock, &msg_sys, total_len, flags); + err = (nosec ? sock_recvmsg_nosec : sock_recvmsg)(sock, msg_sys, + total_len, flags); if (err < 0) goto out_freeiov; len = err; if (uaddr != NULL) { err = move_addr_to_user((struct sockaddr *)&addr, - msg_sys.msg_namelen, uaddr, + msg_sys->msg_namelen, uaddr, uaddr_len); if (err < 0) goto out_freeiov; } - err = __put_user((msg_sys.msg_flags & ~MSG_CMSG_COMPAT), + err = __put_user((msg_sys->msg_flags & ~MSG_CMSG_COMPAT), COMPAT_FLAGS(msg)); if (err) goto out_freeiov; if (MSG_CMSG_COMPAT & flags) - err = __put_user((unsigned long)msg_sys.msg_control - cmsg_ptr, + err = __put_user((unsigned long)msg_sys->msg_control - cmsg_ptr, &msg_compat->msg_controllen); else - err = __put_user((unsigned long)msg_sys.msg_control - cmsg_ptr, + err = __put_user((unsigned long)msg_sys->msg_control - cmsg_ptr, &msg->msg_controllen); if (err) goto out_freeiov; @@ -2084,21 +2092,150 @@ SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, out_freeiov: if (iov != iovstack) sock_kfree_s(sock->sk, iov, iov_size); -out_put: +out: + return err; +} + +/* + * BSD recvmsg interface + */ + +SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, + unsigned int, flags) +{ + int fput_needed, err; + struct msghdr msg_sys; + struct socket *sock = sockfd_lookup_light(fd, &err, &fput_needed); + + if (!sock) + goto out; + + err = __sys_recvmsg(sock, msg, &msg_sys, flags, 0); + fput_light(sock->file, fput_needed); out: return err; } -#ifdef __ARCH_WANT_SYS_SOCKETCALL +/* + * Linux recvmmsg interface + */ + +int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, + unsigned int flags, struct timespec *timeout) +{ + int fput_needed, err, datagrams; + struct socket *sock; + struct mmsghdr __user *entry; + struct msghdr msg_sys; + struct timespec end_time; + + if (timeout && + poll_select_set_timeout(&end_time, timeout->tv_sec, + timeout->tv_nsec)) + return -EINVAL; + + datagrams = 0; + + sock = sockfd_lookup_light(fd, &err, &fput_needed); + if (!sock) + return err; + + err = sock_error(sock->sk); + if (err) + goto out_put; + + entry = mmsg; + + while (datagrams < vlen) { + /* + * No need to ask LSM for more than the first datagram. + */ + err = __sys_recvmsg(sock, (struct msghdr __user *)entry, + &msg_sys, flags, datagrams); + if (err < 0) + break; + err = put_user(err, &entry->msg_len); + if (err) + break; + ++entry; + ++datagrams; + + if (timeout) { + ktime_get_ts(timeout); + *timeout = timespec_sub(end_time, *timeout); + if (timeout->tv_sec < 0) { + timeout->tv_sec = timeout->tv_nsec = 0; + break; + } + + /* Timeout, return less than vlen datagrams */ + if (timeout->tv_nsec == 0 && timeout->tv_sec == 0) + break; + } + + /* Out of band data, return right away */ + if (msg_sys.msg_flags & MSG_OOB) + break; + } + +out_put: + fput_light(sock->file, fput_needed); + if (err == 0) + return datagrams; + + if (datagrams != 0) { + /* + * We may return less entries than requested (vlen) if the + * sock is non block and there aren't enough datagrams... + */ + if (err != -EAGAIN) { + /* + * ... or if recvmsg returns an error after we + * received some datagrams, where we record the + * error to return on the next call or if the + * app asks about it using getsockopt(SO_ERROR). + */ + sock->sk->sk_err = -err; + } + + return datagrams; + } + + return err; +} + +SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg, + unsigned int, vlen, unsigned int, flags, + struct timespec __user *, timeout) +{ + int datagrams; + struct timespec timeout_sys; + + if (!timeout) + return __sys_recvmmsg(fd, mmsg, vlen, flags, NULL); + + if (copy_from_user(&timeout_sys, timeout, sizeof(timeout_sys))) + return -EFAULT; + + datagrams = __sys_recvmmsg(fd, mmsg, vlen, flags, &timeout_sys); + + if (datagrams > 0 && + copy_to_user(timeout, &timeout_sys, sizeof(timeout_sys))) + datagrams = -EFAULT; + + return datagrams; +} + +#ifdef __ARCH_WANT_SYS_SOCKETCALL /* Argument list sizes for sys_socketcall */ #define AL(x) ((x) * sizeof(unsigned long)) -static const unsigned char nargs[19]={ +static const unsigned char nargs[20] = { AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), AL(6),AL(2),AL(5),AL(5),AL(3),AL(3), - AL(4) + AL(4),AL(5) }; #undef AL @@ -2118,7 +2255,7 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) int err; unsigned int len; - if (call < 1 || call > SYS_ACCEPT4) + if (call < 1 || call > SYS_RECVMMSG) return -EINVAL; len = nargs[call]; @@ -2196,6 +2333,10 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) case SYS_RECVMSG: err = sys_recvmsg(a0, (struct msghdr __user *)a1, a[2]); break; + case SYS_RECVMMSG: + err = sys_recvmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3], + (struct timespec __user *)a[4]); + break; case SYS_ACCEPT4: err = sys_accept4(a0, (struct sockaddr __user *)a1, (int __user *)a[2], a[3]); -- cgit v1.2.3-70-g09d2 From 09115cd42b52704ebd1789524e3e318963a5558d Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 14 Oct 2009 21:32:43 -0700 Subject: sparc: Add missing __NR_recvmmsg define. Signed-off-by: David S. Miller --- arch/sparc/include/asm/unistd.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h index 42f2316c3ea..d8d25bd9712 100644 --- a/arch/sparc/include/asm/unistd.h +++ b/arch/sparc/include/asm/unistd.h @@ -396,8 +396,9 @@ #define __NR_pwritev 325 #define __NR_rt_tgsigqueueinfo 326 #define __NR_perf_event_open 327 +#define __NR_recvmmsg 328 -#define NR_SYSCALLS 328 +#define NR_SYSCALLS 329 #ifdef __32bit_syscall_numbers__ /* Sparc 32-bit only has the "setresuid32", "getresuid32" variants, -- cgit v1.2.3-70-g09d2 From 9d24c888c779c877f1baf5a73e0cec78266ff7bb Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 15 Oct 2009 10:57:44 -0600 Subject: of: Rework linux/of.h and asm/prom.h include ordering In preparation to prune things out of the Sparc, PowerPC and Microblaze asm/prom.h files, change the #include statements to ensure that even if asm/prom.h is included first, linux/of.h gets to determine the order in which files are processed. This patch adds a #include to each of the prom.h files *above* the multi-include protection macros to ensure that linux/of.h can define things before prom.h gets processed. At the end of the merge the cross dependencies between the files should be gone and a sane #include scheme can be restored. Signed-off-by: Grant Likely Acked-by: David S. Miller Acked-by: Wolfram Sang Acked-by: Michal Simek Acked-by: Stephen Neuendorffer Acked-by: Stephen Rothwell --- arch/microblaze/include/asm/prom.h | 8 ++------ arch/powerpc/include/asm/prom.h | 7 +------ arch/sparc/include/asm/prom.h | 7 +------ 3 files changed, 4 insertions(+), 18 deletions(-) (limited to 'arch/sparc') diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h index 37e6f305a68..66368896f92 100644 --- a/arch/microblaze/include/asm/prom.h +++ b/arch/microblaze/include/asm/prom.h @@ -12,6 +12,8 @@ * 2 of the License, or (at your option) any later version. */ +#include /* linux/of.h gets to determine #include ordering */ + #ifndef _ASM_MICROBLAZE_PROM_H #define _ASM_MICROBLAZE_PROM_H #ifdef __KERNEL__ @@ -305,12 +307,6 @@ extern int of_irq_to_resource(struct device_node *dev, int index, */ extern void __iomem *of_iomap(struct device_node *device, int index); -/* - * NB: This is here while we transition from using asm/prom.h - * to linux/of.h - */ -#include - #endif /* __ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _ASM_MICROBLAZE_PROM_H */ diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h index 6ff04185d2a..b0a84ea5f8e 100644 --- a/arch/powerpc/include/asm/prom.h +++ b/arch/powerpc/include/asm/prom.h @@ -1,3 +1,4 @@ +#include /* linux/of.h gets to determine #include ordering */ #ifndef _POWERPC_PROM_H #define _POWERPC_PROM_H #ifdef __KERNEL__ @@ -349,11 +350,5 @@ extern int of_irq_to_resource(struct device_node *dev, int index, */ extern void __iomem *of_iomap(struct device_node *device, int index); -/* - * NB: This is here while we transition from using asm/prom.h - * to linux/of.h - */ -#include - #endif /* __KERNEL__ */ #endif /* _POWERPC_PROM_H */ diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h index 82a190d7efc..0733170e02c 100644 --- a/arch/sparc/include/asm/prom.h +++ b/arch/sparc/include/asm/prom.h @@ -1,3 +1,4 @@ +#include /* linux/of.h gets to determine #include ordering */ #ifndef _SPARC_PROM_H #define _SPARC_PROM_H #ifdef __KERNEL__ @@ -108,12 +109,6 @@ static inline void irq_dispose_mapping(unsigned int virq) { } -/* - * NB: This is here while we transition from using asm/prom.h - * to linux/of.h - */ -#include - extern struct device_node *of_console_device; extern char *of_console_path; extern char *of_console_options; -- cgit v1.2.3-70-g09d2 From 731581e6a653f6a68a4d7ba9df6b886a85c7d080 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 15 Oct 2009 10:57:46 -0600 Subject: of: merge phandle, ihandle and struct property Merge of common code duplicated between Sparc, PowerPC and Microblaze Signed-off-by: Grant Likely Acked-by: David S. Miller Acked-by: Wolfram Sang Acked-by: Michal Simek Acked-by: Stephen Neuendorffer Acked-by: Stephen Rothwell --- arch/microblaze/include/asm/prom.h | 10 ---------- arch/powerpc/include/asm/prom.h | 12 ------------ arch/sparc/include/asm/prom.h | 12 ------------ include/linux/of.h | 12 ++++++++++++ 4 files changed, 12 insertions(+), 34 deletions(-) (limited to 'arch/sparc') diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h index 66368896f92..11cb48419c7 100644 --- a/arch/microblaze/include/asm/prom.h +++ b/arch/microblaze/include/asm/prom.h @@ -73,16 +73,6 @@ struct boot_param_header { u32 dt_struct_size; /* size of the DT structure block */ }; -typedef u32 phandle; -typedef u32 ihandle; - -struct property { - char *name; - int length; - void *value; - struct property *next; -}; - struct device_node { const char *name; const char *type; diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h index b0a84ea5f8e..c236326177a 100644 --- a/arch/powerpc/include/asm/prom.h +++ b/arch/powerpc/include/asm/prom.h @@ -71,18 +71,6 @@ struct boot_param_header u32 dt_struct_size; /* size of the DT structure block */ }; - - -typedef u32 phandle; -typedef u32 ihandle; - -struct property { - char *name; - int length; - void *value; - struct property *next; -}; - struct device_node { const char *name; const char *type; diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h index 0733170e02c..b34f988a2aa 100644 --- a/arch/sparc/include/asm/prom.h +++ b/arch/sparc/include/asm/prom.h @@ -29,18 +29,6 @@ #define of_prop_cmp(s1, s2) strcasecmp((s1), (s2)) #define of_node_cmp(s1, s2) strcmp((s1), (s2)) -typedef u32 phandle; -typedef u32 ihandle; - -struct property { - char *name; - int length; - void *value; - struct property *next; - unsigned long _flags; - unsigned int unique_id; -}; - struct of_irq_controller; struct device_node { const char *name; diff --git a/include/linux/of.h b/include/linux/of.h index 7be2d1043c1..4668b298479 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -19,6 +19,18 @@ #include #include +typedef u32 phandle; +typedef u32 ihandle; + +struct property { + char *name; + int length; + void *value; + struct property *next; + unsigned long _flags; + unsigned int unique_id; +}; + #include /* flag descriptions */ -- cgit v1.2.3-70-g09d2 From 6f1924928377bd035a9f64466f91a487c69271d2 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 15 Oct 2009 10:57:49 -0600 Subject: of: merge struct device_node Merge of common code duplicated between Sparc, PowerPC and Microblaze Signed-off-by: Grant Likely Acked-by: David S. Miller Acked-by: Wolfram Sang Acked-by: Michal Simek Acked-by: Stephen Neuendorffer Acked-by: Stephen Rothwell --- arch/microblaze/include/asm/prom.h | 20 -------------------- arch/powerpc/include/asm/prom.h | 20 -------------------- arch/sparc/include/asm/prom.h | 24 ------------------------ include/linux/of.h | 32 ++++++++++++++++++++++++++++++++ 4 files changed, 32 insertions(+), 64 deletions(-) (limited to 'arch/sparc') diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h index 11cb48419c7..64e8b3a8c3c 100644 --- a/arch/microblaze/include/asm/prom.h +++ b/arch/microblaze/include/asm/prom.h @@ -73,26 +73,6 @@ struct boot_param_header { u32 dt_struct_size; /* size of the DT structure block */ }; -struct device_node { - const char *name; - const char *type; - phandle node; - phandle linux_phandle; - char *full_name; - - struct property *properties; - struct property *deadprops; /* removed properties */ - struct device_node *parent; - struct device_node *child; - struct device_node *sibling; - struct device_node *next; /* next device of same type */ - struct device_node *allnext; /* next in list of all nodes */ - struct proc_dir_entry *pde; /* this node's proc directory */ - struct kref kref; - unsigned long _flags; - void *data; -}; - extern struct device_node *of_chosen; static inline int of_node_check_flag(struct device_node *n, unsigned long flag) diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h index c236326177a..c918db535f0 100644 --- a/arch/powerpc/include/asm/prom.h +++ b/arch/powerpc/include/asm/prom.h @@ -71,26 +71,6 @@ struct boot_param_header u32 dt_struct_size; /* size of the DT structure block */ }; -struct device_node { - const char *name; - const char *type; - phandle node; - phandle linux_phandle; - char *full_name; - - struct property *properties; - struct property *deadprops; /* removed properties */ - struct device_node *parent; - struct device_node *child; - struct device_node *sibling; - struct device_node *next; /* next device of same type */ - struct device_node *allnext; /* next in list of all nodes */ - struct proc_dir_entry *pde; /* this node's proc directory */ - struct kref kref; - unsigned long _flags; - void *data; -}; - extern struct device_node *of_chosen; static inline int of_node_check_flag(struct device_node *n, unsigned long flag) diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h index b34f988a2aa..e5f4a1d8fc4 100644 --- a/arch/sparc/include/asm/prom.h +++ b/arch/sparc/include/asm/prom.h @@ -29,30 +29,6 @@ #define of_prop_cmp(s1, s2) strcasecmp((s1), (s2)) #define of_node_cmp(s1, s2) strcmp((s1), (s2)) -struct of_irq_controller; -struct device_node { - const char *name; - const char *type; - phandle node; - char *path_component_name; - char *full_name; - - struct property *properties; - struct property *deadprops; /* removed properties */ - struct device_node *parent; - struct device_node *child; - struct device_node *sibling; - struct device_node *next; /* next device of same type */ - struct device_node *allnext; /* next in list of all nodes */ - struct proc_dir_entry *pde; /* this node's proc directory */ - struct kref kref; - unsigned long _flags; - void *data; - unsigned int unique_id; - - struct of_irq_controller *irq_trans; -}; - struct of_irq_controller { unsigned int (*irq_build)(struct device_node *, unsigned int, void *); void *data; diff --git a/include/linux/of.h b/include/linux/of.h index 4668b298479..65a158dc725 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -17,6 +17,7 @@ */ #include #include +#include #include typedef u32 phandle; @@ -31,6 +32,37 @@ struct property { unsigned int unique_id; }; +#if defined(CONFIG_SPARC) +struct of_irq_controller; +#endif + +struct device_node { + const char *name; + const char *type; + phandle node; +#if !defined(CONFIG_SPARC) + phandle linux_phandle; +#endif + char *full_name; + + struct property *properties; + struct property *deadprops; /* removed properties */ + struct device_node *parent; + struct device_node *child; + struct device_node *sibling; + struct device_node *next; /* next device of same type */ + struct device_node *allnext; /* next in list of all nodes */ + struct proc_dir_entry *pde; /* this node's proc directory */ + struct kref kref; + unsigned long _flags; + void *data; +#if defined(CONFIG_SPARC) + char *path_component_name; + unsigned int unique_id; + struct of_irq_controller *irq_trans; +#endif +}; + #include /* flag descriptions */ -- cgit v1.2.3-70-g09d2 From 61e955db539e748cff2b8ea3bf7705259ebe9fb6 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 15 Oct 2009 10:57:51 -0600 Subject: of: Move OF_IS_DYNAMIC and OF_MARK_DYNAMIC macros to of.h Merge of common code duplicated between Sparc, PowerPC and Microblaze Signed-off-by: Grant Likely Acked-by: David S. Miller Acked-by: Wolfram Sang Acked-by: Michal Simek Acked-by: Stephen Neuendorffer Acked-by: Stephen Rothwell --- arch/sparc/include/asm/prom.h | 3 --- include/linux/of.h | 3 +++ 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h index e5f4a1d8fc4..ddbd870b572 100644 --- a/arch/sparc/include/asm/prom.h +++ b/arch/sparc/include/asm/prom.h @@ -34,9 +34,6 @@ struct of_irq_controller { void *data; }; -#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) -#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) - extern struct device_node *of_find_node_by_cpuid(int cpuid); extern int of_set_property(struct device_node *node, const char *name, void *val, int len); extern struct mutex of_set_property_mutex; diff --git a/include/linux/of.h b/include/linux/of.h index 65a158dc725..a66c1eb3169 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -69,6 +69,9 @@ struct device_node { #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ #define OF_DETACHED 2 /* node has been detached from the device tree */ +#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) +#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) + #define OF_BAD_ADDR ((u64)-1) extern struct device_node *of_find_node_by_name(struct device_node *from, -- cgit v1.2.3-70-g09d2 From 526b5b3ed97bac22ed0c9feed97adcdc3a25244c Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 15 Oct 2009 10:58:02 -0600 Subject: of: merge of_node_get(), of_node_put() and of_find_all_nodes() Merge common code between Sparc, PowerPC and Microblaze. Sparc differs in the implementation at this point, so this patch uses a #ifdef to handle sparc differently for now. The merging of implementations will occur in a later patch Signed-off-by: Grant Likely Acked-by: David S. Miller Acked-by: Wolfram Sang Acked-by: Michal Simek Acked-by: Stephen Neuendorffer Acked-by: Stephen Rothwell --- arch/microblaze/include/asm/prom.h | 4 ---- arch/powerpc/include/asm/prom.h | 4 ---- arch/sparc/include/asm/prom.h | 9 --------- include/linux/of.h | 16 ++++++++++++++++ 4 files changed, 16 insertions(+), 17 deletions(-) (limited to 'arch/sparc') diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h index d4f57ffdae3..c92b4a9e439 100644 --- a/arch/microblaze/include/asm/prom.h +++ b/arch/microblaze/include/asm/prom.h @@ -40,10 +40,6 @@ extern struct device_node *of_chosen; extern struct device_node *allnodes; /* temporary while merging */ extern rwlock_t devtree_lock; /* temporary while merging */ -extern struct device_node *of_find_all_nodes(struct device_node *prev); -extern struct device_node *of_node_get(struct device_node *node); -extern void of_node_put(struct device_node *node); - /* For scanning the flat device-tree at boot time */ extern int __init of_scan_flat_dt(int (*it)(unsigned long node, const char *uname, int depth, diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h index d8c0525c313..622769cd1d6 100644 --- a/arch/powerpc/include/asm/prom.h +++ b/arch/powerpc/include/asm/prom.h @@ -34,10 +34,6 @@ extern struct device_node *of_chosen; #define HAVE_ARCH_DEVTREE_FIXUPS -extern struct device_node *of_find_all_nodes(struct device_node *prev); -extern struct device_node *of_node_get(struct device_node *node); -extern void of_node_put(struct device_node *node); - /* For scanning the flat device-tree at boot time */ extern int __init of_scan_flat_dt(int (*it)(unsigned long node, const char *uname, int depth, diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h index ddbd870b572..f845828ca4c 100644 --- a/arch/sparc/include/asm/prom.h +++ b/arch/sparc/include/asm/prom.h @@ -51,15 +51,6 @@ extern void prom_build_devicetree(void); extern void of_populate_present_mask(void); extern void of_fill_in_cpu_data(void); -/* Dummy ref counting routines - to be implemented later */ -static inline struct device_node *of_node_get(struct device_node *node) -{ - return node; -} -static inline void of_node_put(struct device_node *node) -{ -} - /* These routines are here to provide compatibility with how powerpc * handles IRQ mapping for OF device nodes. We precompute and permanently * register them in the of_device objects, whereas powerpc computes them diff --git a/include/linux/of.h b/include/linux/of.h index 18e4379b8b7..4636bba93af 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -79,6 +79,22 @@ set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de) dn->pde = de; } +#if defined(CONFIG_SPARC) +/* Dummy ref counting routines - to be implemented later */ +static inline struct device_node *of_node_get(struct device_node *node) +{ + return node; +} +static inline void of_node_put(struct device_node *node) +{ +} + +#else +extern struct device_node *of_find_all_nodes(struct device_node *prev); +extern struct device_node *of_node_get(struct device_node *node); +extern void of_node_put(struct device_node *node); +#endif + /* * OF address retreival & translation */ -- cgit v1.2.3-70-g09d2 From 8401707ff645521e9f21cbb8fe3b138f60e85680 Mon Sep 17 00:00:00 2001 From: Konrad Eisele Date: Mon, 31 Aug 2009 22:08:13 +0000 Subject: sparc,leon: Sparc-Leon SMP support Support SMP for a Sparc-Leon multiprocessor system. Add Leon specific SMP code to arch/sparc/kernel/leon_smp.c. Signed-off-by: Konrad Eisele Signed-off-by: David S. Miller --- arch/sparc/include/asm/leon.h | 28 +++ arch/sparc/include/asm/smp_32.h | 9 + arch/sparc/kernel/Makefile | 2 +- arch/sparc/kernel/entry.S | 33 +++ arch/sparc/kernel/head_32.S | 22 ++ arch/sparc/kernel/ioport.c | 5 + arch/sparc/kernel/leon_kernel.c | 84 +++++++ arch/sparc/kernel/leon_smp.c | 468 ++++++++++++++++++++++++++++++++++++++ arch/sparc/kernel/smp_32.c | 10 + arch/sparc/kernel/trampoline_32.S | 69 +++++- arch/sparc/mm/srmmu.c | 5 +- 11 files changed, 732 insertions(+), 3 deletions(-) create mode 100644 arch/sparc/kernel/leon_smp.c (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/leon.h b/arch/sparc/include/asm/leon.h index 28a42b73f64..559448c2c43 100644 --- a/arch/sparc/include/asm/leon.h +++ b/arch/sparc/include/asm/leon.h @@ -340,6 +340,30 @@ extern int leon_flush_needed(void); extern void leon_switch_mm(void); extern int srmmu_swprobe_trace; +#ifdef CONFIG_SMP +extern int leon_smp_nrcpus(void); +extern void leon_clear_profile_irq(int cpu); +extern void leon_smp_done(void); +extern void leon_boot_cpus(void); +extern int leon_boot_one_cpu(int i); +void leon_init_smp(void); +extern void cpu_probe(void); +extern void cpu_idle(void); +extern void init_IRQ(void); +extern void cpu_panic(void); +extern int __leon_processor_id(void); +void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu); + +extern unsigned int real_irq_entry[], smpleon_ticker[]; +extern unsigned int patchme_maybe_smp_msg[]; +extern unsigned long trapbase_cpu1[]; +extern unsigned long trapbase_cpu2[]; +extern unsigned long trapbase_cpu3[]; +extern unsigned int t_nmi[], linux_trap_ipi15_leon[]; +extern unsigned int linux_trap_ipi15_sun4m[]; + +#endif /* CONFIG_SMP */ + #endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ @@ -356,6 +380,10 @@ extern int srmmu_swprobe_trace; #define leon_switch_mm() do {} while (0) #define leon_init_IRQ() do {} while (0) #define init_leon() do {} while (0) +#define leon_smp_done() do {} while (0) +#define leon_boot_cpus() do {} while (0) +#define leon_boot_one_cpu(i) 1 +#define leon_init_smp() do {} while (0) #endif /* !defined(CONFIG_SPARC_LEON) */ diff --git a/arch/sparc/include/asm/smp_32.h b/arch/sparc/include/asm/smp_32.h index 58101dc7049..841905c1021 100644 --- a/arch/sparc/include/asm/smp_32.h +++ b/arch/sparc/include/asm/smp_32.h @@ -106,6 +106,15 @@ static inline int hard_smp4d_processor_id(void) return cpuid; } +extern inline int hard_smpleon_processor_id(void) +{ + int cpuid; + __asm__ __volatile__("rd %%asr17,%0\n\t" + "srl %0,28,%0" : + "=&r" (cpuid) : ); + return cpuid; +} + #ifndef MODULE static inline int hard_smp_processor_id(void) { diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index 5b47fab9966..6b3b076173f 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -72,7 +72,7 @@ obj-y += dma.o obj-$(CONFIG_SPARC32_PCI) += pcic.o obj-$(CONFIG_SMP) += trampoline_$(BITS).o smp_$(BITS).o -obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o +obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o leon_smp.o obj-$(CONFIG_SPARC64_SMP) += hvtramp.o obj-y += auxio_$(BITS).o diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S index f41ecc5ac0b..ec9c7bc67d2 100644 --- a/arch/sparc/kernel/entry.S +++ b/arch/sparc/kernel/entry.S @@ -400,6 +400,39 @@ linux_trap_ipi15_sun4d: /* FIXME */ 1: b,a 1b +#ifdef CONFIG_SPARC_LEON + + .globl smpleon_ticker + /* SMP per-cpu ticker interrupts are handled specially. */ +smpleon_ticker: + SAVE_ALL + or %l0, PSR_PIL, %g2 + wr %g2, 0x0, %psr + WRITE_PAUSE + wr %g2, PSR_ET, %psr + WRITE_PAUSE + call leon_percpu_timer_interrupt + add %sp, STACKFRAME_SZ, %o0 + wr %l0, PSR_ET, %psr + WRITE_PAUSE + RESTORE_ALL + + .align 4 + .globl linux_trap_ipi15_leon +linux_trap_ipi15_leon: + SAVE_ALL + or %l0, PSR_PIL, %l4 + wr %l4, 0x0, %psr + WRITE_PAUSE + wr %l4, PSR_ET, %psr + WRITE_PAUSE + call leon_cross_call_irq + nop + b ret_trap_lockless_ipi + clr %l6 + +#endif /* CONFIG_SPARC_LEON */ + #endif /* CONFIG_SMP */ /* This routine handles illegal instructions and privileged diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S index 439d82a95ac..21bb2590d4a 100644 --- a/arch/sparc/kernel/head_32.S +++ b/arch/sparc/kernel/head_32.S @@ -811,8 +811,30 @@ found_version: got_prop: #ifdef CONFIG_SPARC_LEON /* no cpu-type check is needed, it is a SPARC-LEON */ +#ifdef CONFIG_SMP + ba leon_smp_init + nop + + .global leon_smp_init +leon_smp_init: + sethi %hi(boot_cpu_id), %g1 ! master always 0 + stb %g0, [%g1 + %lo(boot_cpu_id)] + sethi %hi(boot_cpu_id4), %g1 ! master always 0 + stb %g0, [%g1 + %lo(boot_cpu_id4)] + + rd %asr17,%g1 + srl %g1,28,%g1 + + cmp %g0,%g1 + beq sun4c_continue_boot !continue with master + nop + + ba leon_smp_cpu_startup + nop +#else ba sun4c_continue_boot nop +#endif #endif set cputypval, %o2 ldub [%o2 + 0x4], %l1 diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c index 9f61fd8cbb7..3c8c44f6a41 100644 --- a/arch/sparc/kernel/ioport.c +++ b/arch/sparc/kernel/ioport.c @@ -48,8 +48,13 @@ #include #include #include +#include +#ifdef CONFIG_SPARC_LEON +#define mmu_inval_dma_area(p, l) leon_flush_dcache_all() +#else #define mmu_inval_dma_area(p, l) /* Anton pulled it out for 2.4.0-xx */ +#endif static struct resource *_sparc_find_resource(struct resource *r, unsigned long); diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c index 54d8a5bd482..87f1760c0aa 100644 --- a/arch/sparc/kernel/leon_kernel.c +++ b/arch/sparc/kernel/leon_kernel.c @@ -12,11 +12,14 @@ #include #include #include + #include #include #include #include #include +#include +#include #include "prom.h" #include "irq.h" @@ -115,6 +118,21 @@ void __init leon_init_timers(irq_handler_t counter_fn) (((1000000 / 100) - 1))); LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl, 0); +#ifdef CONFIG_SMP + leon_percpu_timer_dev[0].start = (int)leon3_gptimer_regs; + leon_percpu_timer_dev[0].irq = leon3_gptimer_irq+1; + + if (!(LEON3_BYPASS_LOAD_PA(&leon3_gptimer_regs->config) & + (1<e[1].val, 0); + LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].rld, (((1000000/100) - 1))); + LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].ctrl, 0); +# endif + } else { printk(KERN_ERR "No Timer/irqctrl found\n"); BUG(); @@ -130,11 +148,41 @@ void __init leon_init_timers(irq_handler_t counter_fn) prom_halt(); } +# ifdef CONFIG_SMP + { + unsigned long flags; + struct tt_entry *trap_table = &sparc_ttable[SP_TRAP_IRQ1 + (leon_percpu_timer_dev[0].irq - 1)]; + + /* For SMP we use the level 14 ticker, however the bootup code + * has copied the firmwares level 14 vector into boot cpu's + * trap table, we must fix this now or we get squashed. + */ + local_irq_save(flags); + + patchme_maybe_smp_msg[0] = 0x01000000; /* NOP out the branch */ + + /* Adjust so that we jump directly to smpleon_ticker */ + trap_table->inst_three += smpleon_ticker - real_irq_entry; + + local_flush_cache_all(); + local_irq_restore(flags); + } +# endif + if (leon3_gptimer_regs) { LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl, LEON3_GPTIMER_EN | LEON3_GPTIMER_RL | LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN); + +#ifdef CONFIG_SMP + LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].ctrl, + LEON3_GPTIMER_EN | + LEON3_GPTIMER_RL | + LEON3_GPTIMER_LD | + LEON3_GPTIMER_IRQEN); +#endif + } } @@ -175,6 +223,42 @@ void __init leon_node_init(struct device_node *dp, struct device_node ***nextp) } } +#ifdef CONFIG_SMP + +void leon_set_cpu_int(int cpu, int level) +{ + unsigned long mask; + mask = get_irqmask(level); + LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->force[cpu], mask); +} + +static void leon_clear_ipi(int cpu, int level) +{ + unsigned long mask; + mask = get_irqmask(level); + LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->force[cpu], mask<<16); +} + +static void leon_set_udt(int cpu) +{ +} + +void leon_clear_profile_irq(int cpu) +{ +} + +void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu) +{ + unsigned long mask, flags, *addr; + mask = get_irqmask(irq_nr); + local_irq_save(flags); + addr = (unsigned long *)&(leon3_irqctrl_regs->mask[cpu]); + LEON3_BYPASS_STORE_PA(addr, (LEON3_BYPASS_LOAD_PA(addr) | (mask))); + local_irq_restore(flags); +} + +#endif + void __init leon_init_IRQ(void) { sparc_init_timers = leon_init_timers; diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c new file mode 100644 index 00000000000..05c0dadd637 --- /dev/null +++ b/arch/sparc/kernel/leon_smp.c @@ -0,0 +1,468 @@ +/* leon_smp.c: Sparc-Leon SMP support. + * + * based on sun4m_smp.c + * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) + * Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB + * Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB + */ + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef CONFIG_SPARC_LEON + +#include "irq.h" + +extern ctxd_t *srmmu_ctx_table_phys; +static int smp_processors_ready; +extern volatile unsigned long cpu_callin_map[NR_CPUS]; +extern unsigned char boot_cpu_id; +extern cpumask_t smp_commenced_mask; +void __init leon_configure_cache_smp(void); + +static inline unsigned long do_swap(volatile unsigned long *ptr, + unsigned long val) +{ + __asm__ __volatile__("swapa [%1] %2, %0\n\t" : "=&r"(val) + : "r"(ptr), "i"(ASI_LEON_DCACHE_MISS) + : "memory"); + return val; +} + +static void smp_setup_percpu_timer(void); + +void __cpuinit leon_callin(void) +{ + int cpuid = hard_smpleon_processor_id(); + + local_flush_cache_all(); + local_flush_tlb_all(); + leon_configure_cache_smp(); + + /* Get our local ticker going. */ + smp_setup_percpu_timer(); + + calibrate_delay(); + smp_store_cpu_info(cpuid); + + local_flush_cache_all(); + local_flush_tlb_all(); + + /* + * Unblock the master CPU _only_ when the scheduler state + * of all secondary CPUs will be up-to-date, so after + * the SMP initialization the master will be just allowed + * to call the scheduler code. + * Allow master to continue. + */ + do_swap(&cpu_callin_map[cpuid], 1); + + local_flush_cache_all(); + local_flush_tlb_all(); + + cpu_probe(); + + /* Fix idle thread fields. */ + __asm__ __volatile__("ld [%0], %%g6\n\t" : : "r"(¤t_set[cpuid]) + : "memory" /* paranoid */); + + /* Attach to the address space of init_task. */ + atomic_inc(&init_mm.mm_count); + current->active_mm = &init_mm; + + while (!cpu_isset(cpuid, smp_commenced_mask)) + mb(); + + local_irq_enable(); + cpu_set(cpuid, cpu_online_map); +} + +/* + * Cycle through the processors asking the PROM to start each one. + */ + +extern struct linux_prom_registers smp_penguin_ctable; + +void __init leon_configure_cache_smp(void) +{ + unsigned long cfg = sparc_leon3_get_dcachecfg(); + int me = smp_processor_id(); + + if (ASI_LEON3_SYSCTRL_CFG_SSIZE(cfg) > 4) { + printk(KERN_INFO "Note: SMP with snooping only works on 4k cache, found %dk(0x%x) on cpu %d, disabling caches\n", + (unsigned int)ASI_LEON3_SYSCTRL_CFG_SSIZE(cfg), + (unsigned int)cfg, (unsigned int)me); + sparc_leon3_disable_cache(); + } else { + if (cfg & ASI_LEON3_SYSCTRL_CFG_SNOOPING) { + sparc_leon3_enable_snooping(); + } else { + printk(KERN_INFO "Note: You have to enable snooping in the vhdl model cpu %d, disabling caches\n", + me); + sparc_leon3_disable_cache(); + } + } + + local_flush_cache_all(); + local_flush_tlb_all(); +} + +void leon_smp_setbroadcast(unsigned int mask) +{ + int broadcast = + ((LEON3_BYPASS_LOAD_PA(&(leon3_irqctrl_regs->mpstatus)) >> + LEON3_IRQMPSTATUS_BROADCAST) & 1); + if (!broadcast) { + prom_printf("######## !!!! The irqmp-ctrl must have broadcast enabled, smp wont work !!!!! ####### nr cpus: %d\n", + leon_smp_nrcpus()); + if (leon_smp_nrcpus() > 1) { + BUG(); + } else { + prom_printf("continue anyway\n"); + return; + } + } + LEON_BYPASS_STORE_PA(&(leon3_irqctrl_regs->mpbroadcast), mask); +} + +unsigned int leon_smp_getbroadcast(void) +{ + unsigned int mask; + mask = LEON_BYPASS_LOAD_PA(&(leon3_irqctrl_regs->mpbroadcast)); + return mask; +} + +int leon_smp_nrcpus(void) +{ + int nrcpu = + ((LEON3_BYPASS_LOAD_PA(&(leon3_irqctrl_regs->mpstatus)) >> + LEON3_IRQMPSTATUS_CPUNR) & 0xf) + 1; + return nrcpu; +} + +void __init leon_boot_cpus(void) +{ + int nrcpu = leon_smp_nrcpus(); + int me = smp_processor_id(); + + printk(KERN_INFO "%d:(%d:%d) cpus mpirq at 0x%x \n", (unsigned int)me, + (unsigned int)nrcpu, (unsigned int)NR_CPUS, + (unsigned int)&(leon3_irqctrl_regs->mpstatus)); + + leon_enable_irq_cpu(LEON3_IRQ_CROSS_CALL, me); + leon_enable_irq_cpu(LEON3_IRQ_TICKER, me); + leon_enable_irq_cpu(LEON3_IRQ_RESCHEDULE, me); + + leon_smp_setbroadcast(1 << LEON3_IRQ_TICKER); + + leon_configure_cache_smp(); + smp_setup_percpu_timer(); + local_flush_cache_all(); + +} + +int __cpuinit leon_boot_one_cpu(int i) +{ + + struct task_struct *p; + int timeout; + + /* Cook up an idler for this guy. */ + p = fork_idle(i); + + current_set[i] = task_thread_info(p); + + /* See trampoline.S:leon_smp_cpu_startup for details... + * Initialize the contexts table + * Since the call to prom_startcpu() trashes the structure, + * we need to re-initialize it for each cpu + */ + smp_penguin_ctable.which_io = 0; + smp_penguin_ctable.phys_addr = (unsigned int)srmmu_ctx_table_phys; + smp_penguin_ctable.reg_size = 0; + + /* whirrr, whirrr, whirrrrrrrrr... */ + printk(KERN_INFO "Starting CPU %d : (irqmp: 0x%x)\n", (unsigned int)i, + (unsigned int)&leon3_irqctrl_regs->mpstatus); + local_flush_cache_all(); + + LEON_BYPASS_STORE_PA(&(leon3_irqctrl_regs->mpstatus), 1 << i); + + /* wheee... it's going... */ + for (timeout = 0; timeout < 10000; timeout++) { + if (cpu_callin_map[i]) + break; + udelay(200); + } + printk(KERN_INFO "Started CPU %d \n", (unsigned int)i); + + if (!(cpu_callin_map[i])) { + printk(KERN_ERR "Processor %d is stuck.\n", i); + return -ENODEV; + } else { + leon_enable_irq_cpu(LEON3_IRQ_CROSS_CALL, i); + leon_enable_irq_cpu(LEON3_IRQ_TICKER, i); + leon_enable_irq_cpu(LEON3_IRQ_RESCHEDULE, i); + } + + local_flush_cache_all(); + return 0; +} + +void __init leon_smp_done(void) +{ + + int i, first; + int *prev; + + /* setup cpu list for irq rotation */ + first = 0; + prev = &first; + for (i = 0; i < NR_CPUS; i++) { + if (cpu_online(i)) { + *prev = i; + prev = &cpu_data(i).next; + } + } + *prev = first; + local_flush_cache_all(); + + /* Free unneeded trap tables */ + if (!cpu_isset(1, cpu_present_map)) { + ClearPageReserved(virt_to_page(trapbase_cpu1)); + init_page_count(virt_to_page(trapbase_cpu1)); + free_page((unsigned long)trapbase_cpu1); + totalram_pages++; + num_physpages++; + } + if (!cpu_isset(2, cpu_present_map)) { + ClearPageReserved(virt_to_page(trapbase_cpu2)); + init_page_count(virt_to_page(trapbase_cpu2)); + free_page((unsigned long)trapbase_cpu2); + totalram_pages++; + num_physpages++; + } + if (!cpu_isset(3, cpu_present_map)) { + ClearPageReserved(virt_to_page(trapbase_cpu3)); + init_page_count(virt_to_page(trapbase_cpu3)); + free_page((unsigned long)trapbase_cpu3); + totalram_pages++; + num_physpages++; + } + /* Ok, they are spinning and ready to go. */ + smp_processors_ready = 1; + +} + +void leon_irq_rotate(int cpu) +{ +} + +static struct smp_funcall { + smpfunc_t func; + unsigned long arg1; + unsigned long arg2; + unsigned long arg3; + unsigned long arg4; + unsigned long arg5; + unsigned long processors_in[NR_CPUS]; /* Set when ipi entered. */ + unsigned long processors_out[NR_CPUS]; /* Set when ipi exited. */ +} ccall_info; + +static DEFINE_SPINLOCK(cross_call_lock); + +/* Cross calls must be serialized, at least currently. */ +static void leon_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1, + unsigned long arg2, unsigned long arg3, + unsigned long arg4) +{ + if (smp_processors_ready) { + register int high = NR_CPUS - 1; + unsigned long flags; + + spin_lock_irqsave(&cross_call_lock, flags); + + { + /* If you make changes here, make sure gcc generates proper code... */ + register smpfunc_t f asm("i0") = func; + register unsigned long a1 asm("i1") = arg1; + register unsigned long a2 asm("i2") = arg2; + register unsigned long a3 asm("i3") = arg3; + register unsigned long a4 asm("i4") = arg4; + register unsigned long a5 asm("i5") = 0; + + __asm__ __volatile__("std %0, [%6]\n\t" + "std %2, [%6 + 8]\n\t" + "std %4, [%6 + 16]\n\t" : : + "r"(f), "r"(a1), "r"(a2), "r"(a3), + "r"(a4), "r"(a5), + "r"(&ccall_info.func)); + } + + /* Init receive/complete mapping, plus fire the IPI's off. */ + { + register int i; + + cpu_clear(smp_processor_id(), mask); + cpus_and(mask, cpu_online_map, mask); + for (i = 0; i <= high; i++) { + if (cpu_isset(i, mask)) { + ccall_info.processors_in[i] = 0; + ccall_info.processors_out[i] = 0; + set_cpu_int(i, LEON3_IRQ_CROSS_CALL); + + } + } + } + + { + register int i; + + i = 0; + do { + if (!cpu_isset(i, mask)) + continue; + + while (!ccall_info.processors_in[i]) + barrier(); + } while (++i <= high); + + i = 0; + do { + if (!cpu_isset(i, mask)) + continue; + + while (!ccall_info.processors_out[i]) + barrier(); + } while (++i <= high); + } + + spin_unlock_irqrestore(&cross_call_lock, flags); + } +} + +/* Running cross calls. */ +void leon_cross_call_irq(void) +{ + int i = smp_processor_id(); + + ccall_info.processors_in[i] = 1; + ccall_info.func(ccall_info.arg1, ccall_info.arg2, ccall_info.arg3, + ccall_info.arg4, ccall_info.arg5); + ccall_info.processors_out[i] = 1; +} + +void leon_percpu_timer_interrupt(struct pt_regs *regs) +{ + struct pt_regs *old_regs; + int cpu = smp_processor_id(); + + old_regs = set_irq_regs(regs); + + leon_clear_profile_irq(cpu); + + profile_tick(CPU_PROFILING); + + if (!--prof_counter(cpu)) { + int user = user_mode(regs); + + irq_enter(); + update_process_times(user); + irq_exit(); + + prof_counter(cpu) = prof_multiplier(cpu); + } + set_irq_regs(old_regs); +} + +static void __init smp_setup_percpu_timer(void) +{ + int cpu = smp_processor_id(); + + prof_counter(cpu) = prof_multiplier(cpu) = 1; +} + +void __init leon_blackbox_id(unsigned *addr) +{ + int rd = *addr & 0x3e000000; + int rs1 = rd >> 11; + + /* patch places where ___b_hard_smp_processor_id appears */ + addr[0] = 0x81444000 | rd; /* rd %asr17, reg */ + addr[1] = 0x8130201c | rd | rs1; /* srl reg, 0x1c, reg */ + addr[2] = 0x01000000; /* nop */ +} + +void __init leon_blackbox_current(unsigned *addr) +{ + int rd = *addr & 0x3e000000; + int rs1 = rd >> 11; + + /* patch LOAD_CURRENT macro where ___b_load_current appears */ + addr[0] = 0x81444000 | rd; /* rd %asr17, reg */ + addr[2] = 0x8130201c | rd | rs1; /* srl reg, 0x1c, reg */ + addr[4] = 0x81282002 | rd | rs1; /* sll reg, 0x2, reg */ + +} + +/* + * CPU idle callback function + * See .../arch/sparc/kernel/process.c + */ +void pmc_leon_idle(void) +{ + __asm__ volatile ("mov %g0, %asr19"); +} + +void __init leon_init_smp(void) +{ + /* Patch ipi15 trap table */ + t_nmi[1] = t_nmi[1] + (linux_trap_ipi15_leon - linux_trap_ipi15_sun4m); + + BTFIXUPSET_BLACKBOX(hard_smp_processor_id, leon_blackbox_id); + BTFIXUPSET_BLACKBOX(load_current, leon_blackbox_current); + BTFIXUPSET_CALL(smp_cross_call, leon_cross_call, BTFIXUPCALL_NORM); + BTFIXUPSET_CALL(__hard_smp_processor_id, __leon_processor_id, + BTFIXUPCALL_NORM); + +#ifndef PMC_NO_IDLE + /* Assign power management IDLE handler */ + pm_idle = pmc_leon_idle; + printk(KERN_INFO "leon: power management initialized\n"); +#endif + +} + +#endif /* CONFIG_SPARC_LEON */ diff --git a/arch/sparc/kernel/smp_32.c b/arch/sparc/kernel/smp_32.c index 132d81fb261..91c10fb7085 100644 --- a/arch/sparc/kernel/smp_32.c +++ b/arch/sparc/kernel/smp_32.c @@ -32,6 +32,7 @@ #include #include #include +#include #include "irq.h" @@ -96,6 +97,9 @@ void __init smp_cpus_done(unsigned int max_cpus) case sun4d: smp4d_smp_done(); break; + case sparc_leon: + leon_smp_done(); + break; case sun4e: printk("SUN4E\n"); BUG(); @@ -306,6 +310,9 @@ void __init smp_prepare_cpus(unsigned int max_cpus) case sun4d: smp4d_boot_cpus(); break; + case sparc_leon: + leon_boot_cpus(); + break; case sun4e: printk("SUN4E\n"); BUG(); @@ -376,6 +383,9 @@ int __cpuinit __cpu_up(unsigned int cpu) case sun4d: ret = smp4d_boot_one_cpu(cpu); break; + case sparc_leon: + ret = leon_boot_one_cpu(cpu); + break; case sun4e: printk("SUN4E\n"); BUG(); diff --git a/arch/sparc/kernel/trampoline_32.S b/arch/sparc/kernel/trampoline_32.S index 5e235c52d66..691f484e03b 100644 --- a/arch/sparc/kernel/trampoline_32.S +++ b/arch/sparc/kernel/trampoline_32.S @@ -15,7 +15,7 @@ #include #include - .globl sun4m_cpu_startup, __smp4m_processor_id + .globl sun4m_cpu_startup, __smp4m_processor_id, __leon_processor_id .globl sun4d_cpu_startup, __smp4d_processor_id __CPUINIT @@ -106,6 +106,12 @@ __smp4d_processor_id: retl mov %g1, %o7 +__leon_processor_id: + rd %asr17,%g2 + srl %g2,28,%g2 + retl + mov %g1, %o7 + /* CPUID in bootbus can be found at PA 0xff0140000 */ #define SUN4D_BOOTBUS_CPUID 0xf0140000 @@ -160,3 +166,64 @@ sun4d_cpu_startup: nop b,a smp_do_cpu_idle + +#ifdef CONFIG_SPARC_LEON + + __CPUINIT + .align 4 + .global leon_smp_cpu_startup, smp_penguin_ctable + +leon_smp_cpu_startup: + + set smp_penguin_ctable,%g1 + ld [%g1+4],%g1 + srl %g1,4,%g1 + set 0x00000100,%g5 /* SRMMU_CTXTBL_PTR */ + sta %g1, [%g5] ASI_M_MMUREGS + + /* Set up a sane %psr -- PIL<0xf> S<0x1> PS<0x1> CWP<0x0> */ + set (PSR_PIL | PSR_S | PSR_PS), %g1 + wr %g1, 0x0, %psr ! traps off though + WRITE_PAUSE + + /* Our %wim is one behind CWP */ + mov 2, %g1 + wr %g1, 0x0, %wim + WRITE_PAUSE + + /* Set tbr - we use just one trap table. */ + set trapbase, %g1 + wr %g1, 0x0, %tbr + WRITE_PAUSE + + /* Get our CPU id */ + rd %asr17,%g3 + + /* Give ourselves a stack and curptr. */ + set current_set, %g5 + srl %g3, 28, %g4 + sll %g4, 2, %g4 + ld [%g5 + %g4], %g6 + + sethi %hi(THREAD_SIZE - STACKFRAME_SZ), %sp + or %sp, %lo(THREAD_SIZE - STACKFRAME_SZ), %sp + add %g6, %sp, %sp + + /* Turn on traps (PSR_ET). */ + rd %psr, %g1 + wr %g1, PSR_ET, %psr ! traps on + WRITE_PAUSE + + /* Init our caches, etc. */ + set poke_srmmu, %g5 + ld [%g5], %g5 + call %g5 + nop + + /* Start this processor. */ + call leon_callin + nop + + b,a smp_do_cpu_idle + +#endif diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c index 509b1ffeba6..d55c2553b68 100644 --- a/arch/sparc/mm/srmmu.c +++ b/arch/sparc/mm/srmmu.c @@ -2301,7 +2301,8 @@ void __init ld_mmu_srmmu(void) BTFIXUPSET_CALL(flush_cache_mm, smp_flush_cache_mm, BTFIXUPCALL_NORM); BTFIXUPSET_CALL(flush_cache_range, smp_flush_cache_range, BTFIXUPCALL_NORM); BTFIXUPSET_CALL(flush_cache_page, smp_flush_cache_page, BTFIXUPCALL_NORM); - if (sparc_cpu_model != sun4d) { + if (sparc_cpu_model != sun4d && + sparc_cpu_model != sparc_leon) { BTFIXUPSET_CALL(flush_tlb_all, smp_flush_tlb_all, BTFIXUPCALL_NORM); BTFIXUPSET_CALL(flush_tlb_mm, smp_flush_tlb_mm, BTFIXUPCALL_NORM); BTFIXUPSET_CALL(flush_tlb_range, smp_flush_tlb_range, BTFIXUPCALL_NORM); @@ -2330,6 +2331,8 @@ void __init ld_mmu_srmmu(void) #ifdef CONFIG_SMP if (sparc_cpu_model == sun4d) sun4d_init_smp(); + else if (sparc_cpu_model == sparc_leon) + leon_init_smp(); else sun4m_init_smp(); #endif -- cgit v1.2.3-70-g09d2 From 49ab972aea7fca7b94f9df0f1f077fdab40a825d Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 2 Nov 2009 21:15:59 -0800 Subject: sparc: Remove BKL from apc commit ab772027 (sparc: arch/sparc/kernel/apc.c to unlocked_ioctl) added lock/unlock_kernel() to the apc ioctl code. The code needs no serialization at all. Neither put/get_user nor the read/write access to the sbus devices require it. Remove BKL. cycle_kernel_lock() was added during the big BKL pushdown. It should ensure the serializiation against driver init code. In this case there is nothing to serialize. Remove it as well. Signed-off-by: Thomas Gleixner Signed-off-by: David S. Miller --- arch/sparc/kernel/apc.c | 37 ++++++++++--------------------------- 1 file changed, 10 insertions(+), 27 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/apc.c b/arch/sparc/kernel/apc.c index 9c115823c4b..71ec90b9e31 100644 --- a/arch/sparc/kernel/apc.c +++ b/arch/sparc/kernel/apc.c @@ -10,7 +10,6 @@ #include #include #include -#include #include #include #include @@ -76,7 +75,6 @@ static inline void apc_free(struct of_device *op) static int apc_open(struct inode *inode, struct file *f) { - cycle_kernel_lock(); return 0; } @@ -87,61 +85,46 @@ static int apc_release(struct inode *inode, struct file *f) static long apc_ioctl(struct file *f, unsigned int cmd, unsigned long __arg) { - __u8 inarg, __user *arg; - - arg = (__u8 __user *) __arg; - - lock_kernel(); + __u8 inarg, __user *arg = (__u8 __user *) __arg; switch (cmd) { case APCIOCGFANCTL: - if (put_user(apc_readb(APC_FANCTL_REG) & APC_REGMASK, arg)) { - unlock_kernel(); + if (put_user(apc_readb(APC_FANCTL_REG) & APC_REGMASK, arg)) return -EFAULT; - } break; case APCIOCGCPWR: - if (put_user(apc_readb(APC_CPOWER_REG) & APC_REGMASK, arg)) { - unlock_kernel(); + if (put_user(apc_readb(APC_CPOWER_REG) & APC_REGMASK, arg)) return -EFAULT; - } break; case APCIOCGBPORT: - if (put_user(apc_readb(APC_BPORT_REG) & APC_BPMASK, arg)) { - unlock_kernel(); + if (put_user(apc_readb(APC_BPORT_REG) & APC_BPMASK, arg)) return -EFAULT; - } break; case APCIOCSFANCTL: - if (get_user(inarg, arg)) { - unlock_kernel(); + if (get_user(inarg, arg)) return -EFAULT; - } apc_writeb(inarg & APC_REGMASK, APC_FANCTL_REG); break; + case APCIOCSCPWR: - if (get_user(inarg, arg)) { - unlock_kernel(); + if (get_user(inarg, arg)) return -EFAULT; - } apc_writeb(inarg & APC_REGMASK, APC_CPOWER_REG); break; + case APCIOCSBPORT: - if (get_user(inarg, arg)) { - unlock_kernel(); + if (get_user(inarg, arg)) return -EFAULT; - } apc_writeb(inarg & APC_BPMASK, APC_BPORT_REG); break; + default: - unlock_kernel(); return -EINVAL; }; - unlock_kernel(); return 0; } -- cgit v1.2.3-70-g09d2 From 03102a4ded430586936445a733d0d29660f4d7c1 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 3 Apr 2009 00:56:30 -0700 Subject: sysctl: sparc Use the compat_sys_sysctl Now that we have a generic 32bit compatibility implementation there is no need for sparc to implement it's own. Acked-by: David S. Miller Signed-off-by: Eric W. Biederman --- arch/sparc/kernel/sys_sparc32.c | 57 ----------------------------------------- arch/sparc/kernel/systbls_64.S | 2 +- 2 files changed, 1 insertion(+), 58 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c index 04e28b2671c..f862372074b 100644 --- a/arch/sparc/kernel/sys_sparc32.c +++ b/arch/sparc/kernel/sys_sparc32.c @@ -591,63 +591,6 @@ out: return ret; } -struct __sysctl_args32 { - u32 name; - int nlen; - u32 oldval; - u32 oldlenp; - u32 newval; - u32 newlen; - u32 __unused[4]; -}; - -asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args) -{ -#ifndef CONFIG_SYSCTL_SYSCALL - return -ENOSYS; -#else - struct __sysctl_args32 tmp; - int error; - size_t oldlen, __user *oldlenp = NULL; - unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL; - - if (copy_from_user(&tmp, args, sizeof(tmp))) - return -EFAULT; - - if (tmp.oldval && tmp.oldlenp) { - /* Duh, this is ugly and might not work if sysctl_args - is in read-only memory, but do_sysctl does indirectly - a lot of uaccess in both directions and we'd have to - basically copy the whole sysctl.c here, and - glibc's __sysctl uses rw memory for the structure - anyway. */ - if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) || - put_user(oldlen, (size_t __user *)addr)) - return -EFAULT; - oldlenp = (size_t __user *)addr; - } - - lock_kernel(); - error = do_sysctl((int __user *)(unsigned long) tmp.name, - tmp.nlen, - (void __user *)(unsigned long) tmp.oldval, - oldlenp, - (void __user *)(unsigned long) tmp.newval, - tmp.newlen); - unlock_kernel(); - if (oldlenp) { - if (!error) { - if (get_user(oldlen, (size_t __user *)addr) || - put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp)) - error = -EFAULT; - } - if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused))) - error = -EFAULT; - } - return error; -#endif -} - long sys32_lookup_dcookie(unsigned long cookie_high, unsigned long cookie_low, char __user *buf, size_t len) diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S index 009825f6e73..034b10e0d4b 100644 --- a/arch/sparc/kernel/systbls_64.S +++ b/arch/sparc/kernel/systbls_64.S @@ -68,7 +68,7 @@ sys_call_table32: .word compat_sys_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys32_mlockall /*240*/ .word sys_munlockall, sys32_sched_setparam, sys32_sched_getparam, sys32_sched_setscheduler, sys32_sched_getscheduler .word sys_sched_yield, sys32_sched_get_priority_max, sys32_sched_get_priority_min, sys32_sched_rr_get_interval, compat_sys_nanosleep -/*250*/ .word sys32_mremap, sys32_sysctl, sys32_getsid, sys_fdatasync, sys32_nfsservctl +/*250*/ .word sys32_mremap, compat_sys_sysctl, sys32_getsid, sys_fdatasync, sys32_nfsservctl .word sys32_sync_file_range, compat_sys_clock_settime, compat_sys_clock_gettime, compat_sys_clock_getres, sys32_clock_nanosleep /*260*/ .word compat_sys_sched_getaffinity, compat_sys_sched_setaffinity, sys32_timer_settime, compat_sys_timer_gettime, sys_timer_getoverrun .word sys_timer_delete, compat_sys_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy -- cgit v1.2.3-70-g09d2 From 4df286e52917c95c415400367cfd523dfbb0f93a Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 6 Nov 2009 22:16:32 -0800 Subject: sparc: Make atomic locks raw SPIN_LOCK_UNLOCKED is deprecated and the locks which protect the atomic operations have no dependency on other locks and the code is well tested so the conversion to a raw lock is safe. Make the lock array static while at it. Signed-off-by: Thomas Gleixner Signed-off-by: David S. Miller --- arch/sparc/lib/atomic32.c | 36 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 18 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c index cbddeb38ffd..080b7c26e0f 100644 --- a/arch/sparc/lib/atomic32.c +++ b/arch/sparc/lib/atomic32.c @@ -15,8 +15,8 @@ #define ATOMIC_HASH_SIZE 4 #define ATOMIC_HASH(a) (&__atomic_hash[(((unsigned long)a)>>8) & (ATOMIC_HASH_SIZE-1)]) -spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = { - [0 ... (ATOMIC_HASH_SIZE-1)] = SPIN_LOCK_UNLOCKED +static raw_spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = { + [0 ... (ATOMIC_HASH_SIZE-1)] = __RAW_SPIN_LOCK_UNLOCKED }; #else /* SMP */ @@ -31,11 +31,11 @@ int __atomic_add_return(int i, atomic_t *v) { int ret; unsigned long flags; - spin_lock_irqsave(ATOMIC_HASH(v), flags); + __raw_spin_lock_irqsave(ATOMIC_HASH(v), flags); ret = (v->counter += i); - spin_unlock_irqrestore(ATOMIC_HASH(v), flags); + __raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags); return ret; } EXPORT_SYMBOL(__atomic_add_return); @@ -45,12 +45,12 @@ int atomic_cmpxchg(atomic_t *v, int old, int new) int ret; unsigned long flags; - spin_lock_irqsave(ATOMIC_HASH(v), flags); + __raw_spin_lock_irqsave(ATOMIC_HASH(v), flags); ret = v->counter; if (likely(ret == old)) v->counter = new; - spin_unlock_irqrestore(ATOMIC_HASH(v), flags); + __raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags); return ret; } EXPORT_SYMBOL(atomic_cmpxchg); @@ -60,11 +60,11 @@ int atomic_add_unless(atomic_t *v, int a, int u) int ret; unsigned long flags; - spin_lock_irqsave(ATOMIC_HASH(v), flags); + __raw_spin_lock_irqsave(ATOMIC_HASH(v), flags); ret = v->counter; if (ret != u) v->counter += a; - spin_unlock_irqrestore(ATOMIC_HASH(v), flags); + __raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags); return ret != u; } EXPORT_SYMBOL(atomic_add_unless); @@ -74,9 +74,9 @@ void atomic_set(atomic_t *v, int i) { unsigned long flags; - spin_lock_irqsave(ATOMIC_HASH(v), flags); + __raw_spin_lock_irqsave(ATOMIC_HASH(v), flags); v->counter = i; - spin_unlock_irqrestore(ATOMIC_HASH(v), flags); + __raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags); } EXPORT_SYMBOL(atomic_set); @@ -84,10 +84,10 @@ unsigned long ___set_bit(unsigned long *addr, unsigned long mask) { unsigned long old, flags; - spin_lock_irqsave(ATOMIC_HASH(addr), flags); + __raw_spin_lock_irqsave(ATOMIC_HASH(addr), flags); old = *addr; *addr = old | mask; - spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); + __raw_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); return old & mask; } @@ -97,10 +97,10 @@ unsigned long ___clear_bit(unsigned long *addr, unsigned long mask) { unsigned long old, flags; - spin_lock_irqsave(ATOMIC_HASH(addr), flags); + __raw_spin_lock_irqsave(ATOMIC_HASH(addr), flags); old = *addr; *addr = old & ~mask; - spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); + __raw_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); return old & mask; } @@ -110,10 +110,10 @@ unsigned long ___change_bit(unsigned long *addr, unsigned long mask) { unsigned long old, flags; - spin_lock_irqsave(ATOMIC_HASH(addr), flags); + __raw_spin_lock_irqsave(ATOMIC_HASH(addr), flags); old = *addr; *addr = old ^ mask; - spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); + __raw_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); return old & mask; } @@ -124,10 +124,10 @@ unsigned long __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new) unsigned long flags; u32 prev; - spin_lock_irqsave(ATOMIC_HASH(ptr), flags); + __raw_spin_lock_irqsave(ATOMIC_HASH(ptr), flags); if ((prev = *ptr) == old) *ptr = new; - spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags); + __raw_spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags); return (unsigned long)prev; } -- cgit v1.2.3-70-g09d2 From 8a2fe6c76e230a4591373fdf77c09c36bc9c1318 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 7 Nov 2009 22:41:03 -0800 Subject: sparc: Replace old style lock initializer SPIN_LOCK_UNLOCKED is deprecated. Use __SPIN_LOCK_UNLOCKED instead. Signed-off-by: Thomas Gleixner Signed-off-by: David S. Miller --- arch/sparc/include/asm/rwsem.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/rwsem.h b/arch/sparc/include/asm/rwsem.h index 1dc129ac2fe..6e5621006f8 100644 --- a/arch/sparc/include/asm/rwsem.h +++ b/arch/sparc/include/asm/rwsem.h @@ -35,8 +35,8 @@ struct rw_semaphore { #endif #define __RWSEM_INITIALIZER(name) \ -{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, LIST_HEAD_INIT((name).wait_list) \ - __RWSEM_DEP_MAP_INIT(name) } +{ RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait_lock), \ + LIST_HEAD_INIT((name).wait_list) __RWSEM_DEP_MAP_INIT(name) } #define DECLARE_RWSEM(name) \ struct rw_semaphore name = __RWSEM_INITIALIZER(name) -- cgit v1.2.3-70-g09d2 From c000c71272ddbe3774b624fdef4eae3147877133 Mon Sep 17 00:00:00 2001 From: Kristoffer Glembo Date: Fri, 13 Nov 2009 05:21:22 +0000 Subject: No auxio on LEON Do not probe for auxio register on SPARC LEON. Signed-off-by: Kristoffer Glembo Signed-off-by: David S. Miller --- arch/sparc/kernel/auxio_32.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/auxio_32.c b/arch/sparc/kernel/auxio_32.c index 45c41232fc4..ee8d214cae1 100644 --- a/arch/sparc/kernel/auxio_32.c +++ b/arch/sparc/kernel/auxio_32.c @@ -28,6 +28,7 @@ void __init auxio_probe(void) struct resource r; switch (sparc_cpu_model) { + case sparc_leon: case sun4d: case sun4: return; -- cgit v1.2.3-70-g09d2 From 4309e5682dd6cca22f1a5cc364b209bf4a121786 Mon Sep 17 00:00:00 2001 From: Kristoffer Glembo Date: Sun, 15 Nov 2009 23:51:06 +0000 Subject: Added sparc_leon3_snooping_enabled() and converted extern inline to static inline Signed-off-by: David S. Miller --- arch/sparc/include/asm/leon.h | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/leon.h b/arch/sparc/include/asm/leon.h index 559448c2c43..3ea5964c43b 100644 --- a/arch/sparc/include/asm/leon.h +++ b/arch/sparc/include/asm/leon.h @@ -148,7 +148,7 @@ static inline unsigned long leon_load_reg(unsigned long paddr) return retval; } -extern inline void leon_srmmu_disabletlb(void) +static inline void leon_srmmu_disabletlb(void) { unsigned int retval; __asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0), @@ -158,7 +158,7 @@ extern inline void leon_srmmu_disabletlb(void) "i"(ASI_LEON_MMUREGS) : "memory"); } -extern inline void leon_srmmu_enabletlb(void) +static inline void leon_srmmu_enabletlb(void) { unsigned int retval; __asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0), @@ -190,7 +190,7 @@ extern void leon_init_IRQ(void); extern unsigned long last_valid_pfn; -extern inline unsigned long sparc_leon3_get_dcachecfg(void) +static inline unsigned long sparc_leon3_get_dcachecfg(void) { unsigned int retval; __asm__ __volatile__("lda [%1] %2, %0\n\t" : @@ -201,7 +201,7 @@ extern inline unsigned long sparc_leon3_get_dcachecfg(void) } /* enable snooping */ -extern inline void sparc_leon3_enable_snooping(void) +static inline void sparc_leon3_enable_snooping(void) { __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t" "set 0x800000, %%l2\n\t" @@ -209,7 +209,14 @@ extern inline void sparc_leon3_enable_snooping(void) "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2"); }; -extern inline void sparc_leon3_disable_cache(void) +static inline int sparc_leon3_snooping_enabled(void) +{ + u32 cctrl; + __asm__ __volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl)); + return (cctrl >> 23) & 1; +}; + +static inline void sparc_leon3_disable_cache(void) { __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t" "set 0x00000f, %%l2\n\t" -- cgit v1.2.3-70-g09d2 From 89a7183d088708ac1ebd0bfc2a939c59b24fec44 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 17 Nov 2009 12:50:40 +0000 Subject: sparc: Fixup last users of irq_chip->typename The typename member of struct irq_chip was kept for migration purposes and is obsolete since more than 2 years. Fix up the leftovers. Signed-off-by: Thomas Gleixner Signed-off-by: David S. Miller --- arch/sparc/kernel/irq_64.c | 8 ++++---- arch/sparc/kernel/pci_msi.c | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c index 8ab1d4728a4..ce996f97855 100644 --- a/arch/sparc/kernel/irq_64.c +++ b/arch/sparc/kernel/irq_64.c @@ -187,7 +187,7 @@ int show_interrupts(struct seq_file *p, void *v) for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); #endif - seq_printf(p, " %9s", irq_desc[i].chip->typename); + seq_printf(p, " %9s", irq_desc[i].chip->name); seq_printf(p, " %s", action->name); for (action=action->next; action; action = action->next) @@ -484,7 +484,7 @@ static void sun4v_virq_eoi(unsigned int virt_irq) } static struct irq_chip sun4u_irq = { - .typename = "sun4u", + .name = "sun4u", .enable = sun4u_irq_enable, .disable = sun4u_irq_disable, .eoi = sun4u_irq_eoi, @@ -492,7 +492,7 @@ static struct irq_chip sun4u_irq = { }; static struct irq_chip sun4v_irq = { - .typename = "sun4v", + .name = "sun4v", .enable = sun4v_irq_enable, .disable = sun4v_irq_disable, .eoi = sun4v_irq_eoi, @@ -500,7 +500,7 @@ static struct irq_chip sun4v_irq = { }; static struct irq_chip sun4v_virq = { - .typename = "vsun4v", + .name = "vsun4v", .enable = sun4v_virq_enable, .disable = sun4v_virq_disable, .eoi = sun4v_virq_eoi, diff --git a/arch/sparc/kernel/pci_msi.c b/arch/sparc/kernel/pci_msi.c index f1be37a7b12..e1b0541feb1 100644 --- a/arch/sparc/kernel/pci_msi.c +++ b/arch/sparc/kernel/pci_msi.c @@ -112,7 +112,7 @@ static void free_msi(struct pci_pbm_info *pbm, int msi_num) } static struct irq_chip msi_irq = { - .typename = "PCI-MSI", + .name = "PCI-MSI", .mask = mask_msi_irq, .unmask = unmask_msi_irq, .enable = unmask_msi_irq, -- cgit v1.2.3-70-g09d2 From bffbc94a4d2c1769c3826fceddd2dbb75e72c80b Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 23 Nov 2009 16:38:56 -0800 Subject: sparc64: Fix definition of VMEMMAP_SIZE. This was the cause of various boot failures on V480, V880, etc. systems. Kernel image memory was being overwritten because the vmemmap[] array was being sized to small. So if you had physical memory addresses past a certain point, the early bootup would spam all over variables in the kernel data section. The vmemmap mappings map page structs, not page struct pointers. And that was the key thinko in the macro definition. This was fixable thanks to the help, reports, and tireless patience of Hermann Lauer. Reported-by: Hermann Lauer Signed-off-by: David S. Miller --- arch/sparc/mm/init_64.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/sparc') diff --git a/arch/sparc/mm/init_64.h b/arch/sparc/mm/init_64.h index c2f772dbd55..77d1b313e34 100644 --- a/arch/sparc/mm/init_64.h +++ b/arch/sparc/mm/init_64.h @@ -45,7 +45,7 @@ extern void free_initmem(void); #define VMEMMAP_ALIGN(x) (((x)+VMEMMAP_CHUNK-1UL)&VMEMMAP_CHUNK_MASK) #define VMEMMAP_SIZE ((((1UL << MAX_PHYSADDR_BITS) >> PAGE_SHIFT) * \ - sizeof(struct page *)) >> VMEMMAP_CHUNK_SHIFT) + sizeof(struct page)) >> VMEMMAP_CHUNK_SHIFT) extern unsigned long vmemmap_table[VMEMMAP_SIZE]; #endif -- cgit v1.2.3-70-g09d2 From 0448f5e88443667d6a2e809eb470960bdbb07657 Mon Sep 17 00:00:00 2001 From: Boaz Harrosh Date: Wed, 25 Nov 2009 15:19:17 -0800 Subject: sparc: remove unused nfsd #includes Some unused includes removed. In an effort to cleanup nfsd headers and move private definitions to source directory. Signed-off-by: Boaz Harrosh Signed-off-by: David S. Miller --- arch/sparc/kernel/sys_sparc32.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c index 04e28b2671c..0a68fdf3e87 100644 --- a/arch/sparc/kernel/sys_sparc32.c +++ b/arch/sparc/kernel/sys_sparc32.c @@ -26,11 +26,6 @@ #include #include #include -#include -#include -#include -#include -#include #include #include #include -- cgit v1.2.3-70-g09d2 From 2d4dc890b5c8fabd818a8586607e6843c4375e62 Mon Sep 17 00:00:00 2001 From: Ilya Loginov Date: Thu, 26 Nov 2009 09:16:19 +0100 Subject: block: add helpers to run flush_dcache_page() against a bio and a request's pages Mtdblock driver doesn't call flush_dcache_page for pages in request. So, this causes problems on architectures where the icache doesn't fill from the dcache or with dcache aliases. The patch fixes this. The ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE symbol was introduced to avoid pointless empty cache-thrashing loops on architectures for which flush_dcache_page() is a no-op. Every architecture was provided with this flush pages on architectires where ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE is equal 1 or do nothing otherwise. See "fix mtd_blkdevs problem with caches on some architectures" discussion on LKML for more information. Signed-off-by: Ilya Loginov Cc: Ingo Molnar Cc: David Woodhouse Cc: Peter Horton Cc: "Ed L. Cashin" Signed-off-by: Jens Axboe --- arch/alpha/include/asm/cacheflush.h | 1 + arch/arm/include/asm/cacheflush.h | 1 + arch/avr32/include/asm/cacheflush.h | 1 + arch/blackfin/include/asm/cacheflush.h | 2 ++ arch/cris/include/asm/cacheflush.h | 1 + arch/frv/include/asm/cacheflush.h | 1 + arch/h8300/include/asm/cacheflush.h | 1 + arch/ia64/include/asm/cacheflush.h | 1 + arch/m32r/include/asm/cacheflush.h | 3 +++ arch/m68k/include/asm/cacheflush_mm.h | 1 + arch/m68k/include/asm/cacheflush_no.h | 1 + arch/microblaze/include/asm/cacheflush.h | 1 + arch/mips/include/asm/cacheflush.h | 1 + arch/mn10300/include/asm/cacheflush.h | 1 + arch/parisc/include/asm/cacheflush.h | 1 + arch/powerpc/include/asm/cacheflush.h | 1 + arch/s390/include/asm/cacheflush.h | 1 + arch/score/include/asm/cacheflush.h | 1 + arch/sh/include/asm/cacheflush.h | 1 + arch/sparc/include/asm/cacheflush_32.h | 1 + arch/sparc/include/asm/cacheflush_64.h | 1 + arch/x86/include/asm/cacheflush.h | 1 + arch/xtensa/include/asm/cacheflush.h | 1 + block/blk-core.c | 19 +++++++++++++++++++ drivers/mtd/mtd_blkdevs.c | 2 ++ fs/bio.c | 12 ++++++++++++ include/asm-generic/cacheflush.h | 1 + include/linux/bio.h | 12 ++++++++++++ include/linux/blkdev.h | 11 +++++++++++ 29 files changed, 83 insertions(+) (limited to 'arch/sparc') diff --git a/arch/alpha/include/asm/cacheflush.h b/arch/alpha/include/asm/cacheflush.h index b686cc7fc44..01d71e1c8a9 100644 --- a/arch/alpha/include/asm/cacheflush.h +++ b/arch/alpha/include/asm/cacheflush.h @@ -9,6 +9,7 @@ #define flush_cache_dup_mm(mm) do { } while (0) #define flush_cache_range(vma, start, end) do { } while (0) #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index fd03fb63a33..247b7b0adc2 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -408,6 +408,7 @@ extern void flush_ptrace_access(struct vm_area_struct *vma, struct page *page, * about to change to user space. This is the same method as used on SPARC64. * See update_mmu_cache for the user space part. */ +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 extern void flush_dcache_page(struct page *); extern void __flush_dcache_page(struct address_space *mapping, struct page *page); diff --git a/arch/avr32/include/asm/cacheflush.h b/arch/avr32/include/asm/cacheflush.h index 670674749b2..96e53820bbb 100644 --- a/arch/avr32/include/asm/cacheflush.h +++ b/arch/avr32/include/asm/cacheflush.h @@ -107,6 +107,7 @@ extern void flush_icache_page(struct vm_area_struct *vma, struct page *page); * do something here, but only for certain configurations. No such * configurations exist at this time. */ +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(page) do { } while (0) #define flush_dcache_mmap_unlock(page) do { } while (0) diff --git a/arch/blackfin/include/asm/cacheflush.h b/arch/blackfin/include/asm/cacheflush.h index af03a36c7a4..417eaac7fe9 100644 --- a/arch/blackfin/include/asm/cacheflush.h +++ b/arch/blackfin/include/asm/cacheflush.h @@ -68,9 +68,11 @@ do { memcpy(dst, src, len); \ #endif #if defined(CONFIG_BFIN_EXTMEM_WRITEBACK) || defined(CONFIG_BFIN_L2_WRITEBACK) # define flush_dcache_range(start,end) blackfin_dcache_flush_range((start), (end)) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 # define flush_dcache_page(page) blackfin_dflush_page(page_address(page)) #else # define flush_dcache_range(start,end) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 # define flush_dcache_page(page) do { } while (0) #endif diff --git a/arch/cris/include/asm/cacheflush.h b/arch/cris/include/asm/cacheflush.h index cf60e3f69f8..36795bca605 100644 --- a/arch/cris/include/asm/cacheflush.h +++ b/arch/cris/include/asm/cacheflush.h @@ -12,6 +12,7 @@ #define flush_cache_dup_mm(mm) do { } while (0) #define flush_cache_range(vma, start, end) do { } while (0) #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) diff --git a/arch/frv/include/asm/cacheflush.h b/arch/frv/include/asm/cacheflush.h index 432a69e7f3d..edbac54ae01 100644 --- a/arch/frv/include/asm/cacheflush.h +++ b/arch/frv/include/asm/cacheflush.h @@ -47,6 +47,7 @@ static inline void __flush_cache_all(void) } /* dcache/icache coherency... */ +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 #ifdef CONFIG_MMU extern void flush_dcache_page(struct page *page); #else diff --git a/arch/h8300/include/asm/cacheflush.h b/arch/h8300/include/asm/cacheflush.h index 5ffdca217b9..4cf2df20c1c 100644 --- a/arch/h8300/include/asm/cacheflush.h +++ b/arch/h8300/include/asm/cacheflush.h @@ -15,6 +15,7 @@ #define flush_cache_dup_mm(mm) do { } while (0) #define flush_cache_range(vma,a,b) #define flush_cache_page(vma,p,pfn) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) #define flush_dcache_mmap_lock(mapping) #define flush_dcache_mmap_unlock(mapping) diff --git a/arch/ia64/include/asm/cacheflush.h b/arch/ia64/include/asm/cacheflush.h index c8ce2719fee..429eefc93ee 100644 --- a/arch/ia64/include/asm/cacheflush.h +++ b/arch/ia64/include/asm/cacheflush.h @@ -25,6 +25,7 @@ #define flush_cache_vmap(start, end) do { } while (0) #define flush_cache_vunmap(start, end) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 #define flush_dcache_page(page) \ do { \ clear_bit(PG_arch_1, &(page)->flags); \ diff --git a/arch/m32r/include/asm/cacheflush.h b/arch/m32r/include/asm/cacheflush.h index 78587c95814..8e8e04516c3 100644 --- a/arch/m32r/include/asm/cacheflush.h +++ b/arch/m32r/include/asm/cacheflush.h @@ -12,6 +12,7 @@ extern void _flush_cache_copyback_all(void); #define flush_cache_dup_mm(mm) do { } while (0) #define flush_cache_range(vma, start, end) do { } while (0) #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) @@ -33,6 +34,7 @@ extern void smp_flush_cache_all(void); #define flush_cache_dup_mm(mm) do { } while (0) #define flush_cache_range(vma, start, end) do { } while (0) #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) @@ -46,6 +48,7 @@ extern void smp_flush_cache_all(void); #define flush_cache_dup_mm(mm) do { } while (0) #define flush_cache_range(vma, start, end) do { } while (0) #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) diff --git a/arch/m68k/include/asm/cacheflush_mm.h b/arch/m68k/include/asm/cacheflush_mm.h index 16bf375fdbe..73de7c89d8e 100644 --- a/arch/m68k/include/asm/cacheflush_mm.h +++ b/arch/m68k/include/asm/cacheflush_mm.h @@ -128,6 +128,7 @@ static inline void __flush_page_to_ram(void *vaddr) } } +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 #define flush_dcache_page(page) __flush_page_to_ram(page_address(page)) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) diff --git a/arch/m68k/include/asm/cacheflush_no.h b/arch/m68k/include/asm/cacheflush_no.h index c65f00a9455..89f195656be 100644 --- a/arch/m68k/include/asm/cacheflush_no.h +++ b/arch/m68k/include/asm/cacheflush_no.h @@ -12,6 +12,7 @@ #define flush_cache_range(vma, start, end) __flush_cache_all() #define flush_cache_page(vma, vmaddr) do { } while (0) #define flush_dcache_range(start,len) __flush_cache_all() +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) diff --git a/arch/microblaze/include/asm/cacheflush.h b/arch/microblaze/include/asm/cacheflush.h index f989d6aad64..088076e657b 100644 --- a/arch/microblaze/include/asm/cacheflush.h +++ b/arch/microblaze/include/asm/cacheflush.h @@ -37,6 +37,7 @@ #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) #define flush_dcache_range(start, end) __invalidate_dcache_range(start, end) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) diff --git a/arch/mips/include/asm/cacheflush.h b/arch/mips/include/asm/cacheflush.h index 03b1d69b142..40bb9fde205 100644 --- a/arch/mips/include/asm/cacheflush.h +++ b/arch/mips/include/asm/cacheflush.h @@ -38,6 +38,7 @@ extern void (*flush_cache_range)(struct vm_area_struct *vma, extern void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn); extern void __flush_dcache_page(struct page *page); +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 static inline void flush_dcache_page(struct page *page) { if (cpu_has_dc_aliases || !cpu_has_ic_fills_f_dc) diff --git a/arch/mn10300/include/asm/cacheflush.h b/arch/mn10300/include/asm/cacheflush.h index 1a55d61f0d0..29e692f7f03 100644 --- a/arch/mn10300/include/asm/cacheflush.h +++ b/arch/mn10300/include/asm/cacheflush.h @@ -26,6 +26,7 @@ #define flush_cache_page(vma, vmaddr, pfn) do {} while (0) #define flush_cache_vmap(start, end) do {} while (0) #define flush_cache_vunmap(start, end) do {} while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do {} while (0) #define flush_dcache_mmap_lock(mapping) do {} while (0) #define flush_dcache_mmap_unlock(mapping) do {} while (0) diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h index 724395143f2..7a73b615c23 100644 --- a/arch/parisc/include/asm/cacheflush.h +++ b/arch/parisc/include/asm/cacheflush.h @@ -42,6 +42,7 @@ void flush_cache_mm(struct mm_struct *mm); #define flush_cache_vmap(start, end) flush_cache_all() #define flush_cache_vunmap(start, end) flush_cache_all() +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 extern void flush_dcache_page(struct page *page); #define flush_dcache_mmap_lock(mapping) \ diff --git a/arch/powerpc/include/asm/cacheflush.h b/arch/powerpc/include/asm/cacheflush.h index ba667a383b8..ab9e402518e 100644 --- a/arch/powerpc/include/asm/cacheflush.h +++ b/arch/powerpc/include/asm/cacheflush.h @@ -25,6 +25,7 @@ #define flush_cache_vmap(start, end) do { } while (0) #define flush_cache_vunmap(start, end) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 extern void flush_dcache_page(struct page *page); #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) diff --git a/arch/s390/include/asm/cacheflush.h b/arch/s390/include/asm/cacheflush.h index 49d5af916d0..405cc97c624 100644 --- a/arch/s390/include/asm/cacheflush.h +++ b/arch/s390/include/asm/cacheflush.h @@ -10,6 +10,7 @@ #define flush_cache_dup_mm(mm) do { } while (0) #define flush_cache_range(vma, start, end) do { } while (0) #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) diff --git a/arch/score/include/asm/cacheflush.h b/arch/score/include/asm/cacheflush.h index 07cc8fc457c..caaba24036e 100644 --- a/arch/score/include/asm/cacheflush.h +++ b/arch/score/include/asm/cacheflush.h @@ -16,6 +16,7 @@ extern void flush_icache_range(unsigned long start, unsigned long end); extern void flush_dcache_range(unsigned long start, unsigned long end); #define flush_cache_dup_mm(mm) do {} while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do {} while (0) #define flush_dcache_mmap_lock(mapping) do {} while (0) #define flush_dcache_mmap_unlock(mapping) do {} while (0) diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h index c29918f3c81..dda96eb3e7c 100644 --- a/arch/sh/include/asm/cacheflush.h +++ b/arch/sh/include/asm/cacheflush.h @@ -42,6 +42,7 @@ extern void flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn); extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 extern void flush_dcache_page(struct page *page); extern void flush_icache_range(unsigned long start, unsigned long end); extern void flush_icache_page(struct vm_area_struct *vma, diff --git a/arch/sparc/include/asm/cacheflush_32.h b/arch/sparc/include/asm/cacheflush_32.h index 68ac1091027..2e468773f25 100644 --- a/arch/sparc/include/asm/cacheflush_32.h +++ b/arch/sparc/include/asm/cacheflush_32.h @@ -75,6 +75,7 @@ BTFIXUPDEF_CALL(void, flush_sig_insns, struct mm_struct *, unsigned long) extern void sparc_flush_page_to_ram(struct page *page); +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 #define flush_dcache_page(page) sparc_flush_page_to_ram(page) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) diff --git a/arch/sparc/include/asm/cacheflush_64.h b/arch/sparc/include/asm/cacheflush_64.h index c43321729b3..b95384033e8 100644 --- a/arch/sparc/include/asm/cacheflush_64.h +++ b/arch/sparc/include/asm/cacheflush_64.h @@ -37,6 +37,7 @@ extern void flush_dcache_page_all(struct mm_struct *mm, struct page *page); #endif extern void __flush_dcache_range(unsigned long start, unsigned long end); +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 extern void flush_dcache_page(struct page *page); #define flush_icache_page(vma, pg) do { } while(0) diff --git a/arch/x86/include/asm/cacheflush.h b/arch/x86/include/asm/cacheflush.h index b54f6afe7ec..9076add593a 100644 --- a/arch/x86/include/asm/cacheflush.h +++ b/arch/x86/include/asm/cacheflush.h @@ -12,6 +12,7 @@ static inline void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) { } static inline void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn) { } +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 static inline void flush_dcache_page(struct page *page) { } static inline void flush_dcache_mmap_lock(struct address_space *mapping) { } static inline void flush_dcache_mmap_unlock(struct address_space *mapping) { } diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h index b7b8fbe47c7..a508f2f73bd 100644 --- a/arch/xtensa/include/asm/cacheflush.h +++ b/arch/xtensa/include/asm/cacheflush.h @@ -101,6 +101,7 @@ static inline void __invalidate_icache_page_alias(unsigned long virt, #define flush_cache_vmap(start,end) flush_cache_all() #define flush_cache_vunmap(start,end) flush_cache_all() +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 extern void flush_dcache_page(struct page*); extern void flush_cache_range(struct vm_area_struct*, ulong, ulong); extern void flush_cache_page(struct vm_area_struct*, unsigned long, unsigned long); diff --git a/block/blk-core.c b/block/blk-core.c index 71da5111120..718897e6d37 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -2358,6 +2358,25 @@ void blk_rq_bio_prep(struct request_queue *q, struct request *rq, rq->rq_disk = bio->bi_bdev->bd_disk; } +#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE +/** + * rq_flush_dcache_pages - Helper function to flush all pages in a request + * @rq: the request to be flushed + * + * Description: + * Flush all pages in @rq. + */ +void rq_flush_dcache_pages(struct request *rq) +{ + struct req_iterator iter; + struct bio_vec *bvec; + + rq_for_each_segment(bvec, rq, iter) + flush_dcache_page(bvec->bv_page); +} +EXPORT_SYMBOL_GPL(rq_flush_dcache_pages); +#endif + /** * blk_lld_busy - Check if underlying low-level drivers of a device are busy * @q : the queue of the device being checked diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 8ca17a3e96e..64e2b379a35 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -59,12 +59,14 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr, for (; nsect > 0; nsect--, block++, buf += tr->blksize) if (tr->readsect(dev, block, buf)) return -EIO; + rq_flush_dcache_pages(req); return 0; case WRITE: if (!tr->writesect) return -EIO; + rq_flush_dcache_pages(req); for (; nsect > 0; nsect--, block++, buf += tr->blksize) if (tr->writesect(dev, block, buf)) return -EIO; diff --git a/fs/bio.c b/fs/bio.c index 12da5db8682..e23a63f4f7d 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -1393,6 +1393,18 @@ void bio_check_pages_dirty(struct bio *bio) } } +#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE +void bio_flush_dcache_pages(struct bio *bi) +{ + int i; + struct bio_vec *bvec; + + bio_for_each_segment(bvec, bi, i) + flush_dcache_page(bvec->bv_page); +} +EXPORT_SYMBOL(bio_flush_dcache_pages); +#endif + /** * bio_endio - end I/O on a bio * @bio: bio diff --git a/include/asm-generic/cacheflush.h b/include/asm-generic/cacheflush.h index ba4ec39a113..57b5c3c82e8 100644 --- a/include/asm-generic/cacheflush.h +++ b/include/asm-generic/cacheflush.h @@ -13,6 +13,7 @@ #define flush_cache_dup_mm(mm) do { } while (0) #define flush_cache_range(vma, start, end) do { } while (0) #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) diff --git a/include/linux/bio.h b/include/linux/bio.h index 474792b825d..7fc5606e6ea 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -391,6 +391,18 @@ extern struct bio *bio_copy_kern(struct request_queue *, void *, unsigned int, gfp_t, int); extern void bio_set_pages_dirty(struct bio *bio); extern void bio_check_pages_dirty(struct bio *bio); + +#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE +# error "You should define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE for your platform" +#endif +#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE +extern void bio_flush_dcache_pages(struct bio *bi); +#else +static inline void bio_flush_dcache_pages(struct bio *bi) +{ +} +#endif + extern struct bio *bio_copy_user(struct request_queue *, struct rq_map_data *, unsigned long, unsigned int, int, gfp_t); extern struct bio *bio_copy_user_iov(struct request_queue *, diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 1cc02972fbe..e727f6c44c4 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -752,6 +752,17 @@ struct req_iterator { #define rq_iter_last(rq, _iter) \ (_iter.bio->bi_next == NULL && _iter.i == _iter.bio->bi_vcnt-1) +#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE +# error "You should define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE for your platform" +#endif +#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE +extern void rq_flush_dcache_pages(struct request *rq); +#else +static inline void rq_flush_dcache_pages(struct request *rq) +{ +} +#endif + extern int blk_register_queue(struct gendisk *disk); extern void blk_unregister_queue(struct gendisk *disk); extern void register_disk(struct gendisk *dev); -- cgit v1.2.3-70-g09d2 From 55f532ec3e84410a9393d1a21b1f58518a0958bc Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 26 Nov 2009 15:28:13 -0800 Subject: Revert "sparc: Make atomic locks raw" This reverts commit 4df286e52917c95c415400367cfd523dfbb0f93a. Breaks the build as reported by Stephen Rothwell. Signed-off-by: David S. Miller --- arch/sparc/lib/atomic32.c | 36 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 18 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c index 080b7c26e0f..cbddeb38ffd 100644 --- a/arch/sparc/lib/atomic32.c +++ b/arch/sparc/lib/atomic32.c @@ -15,8 +15,8 @@ #define ATOMIC_HASH_SIZE 4 #define ATOMIC_HASH(a) (&__atomic_hash[(((unsigned long)a)>>8) & (ATOMIC_HASH_SIZE-1)]) -static raw_spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = { - [0 ... (ATOMIC_HASH_SIZE-1)] = __RAW_SPIN_LOCK_UNLOCKED +spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = { + [0 ... (ATOMIC_HASH_SIZE-1)] = SPIN_LOCK_UNLOCKED }; #else /* SMP */ @@ -31,11 +31,11 @@ int __atomic_add_return(int i, atomic_t *v) { int ret; unsigned long flags; - __raw_spin_lock_irqsave(ATOMIC_HASH(v), flags); + spin_lock_irqsave(ATOMIC_HASH(v), flags); ret = (v->counter += i); - __raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags); + spin_unlock_irqrestore(ATOMIC_HASH(v), flags); return ret; } EXPORT_SYMBOL(__atomic_add_return); @@ -45,12 +45,12 @@ int atomic_cmpxchg(atomic_t *v, int old, int new) int ret; unsigned long flags; - __raw_spin_lock_irqsave(ATOMIC_HASH(v), flags); + spin_lock_irqsave(ATOMIC_HASH(v), flags); ret = v->counter; if (likely(ret == old)) v->counter = new; - __raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags); + spin_unlock_irqrestore(ATOMIC_HASH(v), flags); return ret; } EXPORT_SYMBOL(atomic_cmpxchg); @@ -60,11 +60,11 @@ int atomic_add_unless(atomic_t *v, int a, int u) int ret; unsigned long flags; - __raw_spin_lock_irqsave(ATOMIC_HASH(v), flags); + spin_lock_irqsave(ATOMIC_HASH(v), flags); ret = v->counter; if (ret != u) v->counter += a; - __raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags); + spin_unlock_irqrestore(ATOMIC_HASH(v), flags); return ret != u; } EXPORT_SYMBOL(atomic_add_unless); @@ -74,9 +74,9 @@ void atomic_set(atomic_t *v, int i) { unsigned long flags; - __raw_spin_lock_irqsave(ATOMIC_HASH(v), flags); + spin_lock_irqsave(ATOMIC_HASH(v), flags); v->counter = i; - __raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags); + spin_unlock_irqrestore(ATOMIC_HASH(v), flags); } EXPORT_SYMBOL(atomic_set); @@ -84,10 +84,10 @@ unsigned long ___set_bit(unsigned long *addr, unsigned long mask) { unsigned long old, flags; - __raw_spin_lock_irqsave(ATOMIC_HASH(addr), flags); + spin_lock_irqsave(ATOMIC_HASH(addr), flags); old = *addr; *addr = old | mask; - __raw_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); + spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); return old & mask; } @@ -97,10 +97,10 @@ unsigned long ___clear_bit(unsigned long *addr, unsigned long mask) { unsigned long old, flags; - __raw_spin_lock_irqsave(ATOMIC_HASH(addr), flags); + spin_lock_irqsave(ATOMIC_HASH(addr), flags); old = *addr; *addr = old & ~mask; - __raw_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); + spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); return old & mask; } @@ -110,10 +110,10 @@ unsigned long ___change_bit(unsigned long *addr, unsigned long mask) { unsigned long old, flags; - __raw_spin_lock_irqsave(ATOMIC_HASH(addr), flags); + spin_lock_irqsave(ATOMIC_HASH(addr), flags); old = *addr; *addr = old ^ mask; - __raw_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); + spin_unlock_irqrestore(ATOMIC_HASH(addr), flags); return old & mask; } @@ -124,10 +124,10 @@ unsigned long __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new) unsigned long flags; u32 prev; - __raw_spin_lock_irqsave(ATOMIC_HASH(ptr), flags); + spin_lock_irqsave(ATOMIC_HASH(ptr), flags); if ((prev = *ptr) == old) *ptr = new; - __raw_spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags); + spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags); return (unsigned long)prev; } -- cgit v1.2.3-70-g09d2 From c57ec52f2647e53709c3ce8d86b28876c2f32de0 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 27 Nov 2009 17:33:43 -0800 Subject: sparc64: Faster early-boot framebuffer console. Borrow the powerpc bootx text console driver. Signed-off-by: David S. Miller --- arch/sparc/Kconfig | 7 + arch/sparc/include/asm/btext.h | 6 + arch/sparc/kernel/Makefile | 1 + arch/sparc/kernel/btext.c | 673 +++++++++++++++++++++++++++++++++++++++++ arch/sparc/kernel/setup_64.c | 6 +- 5 files changed, 692 insertions(+), 1 deletion(-) create mode 100644 arch/sparc/include/asm/btext.h create mode 100644 arch/sparc/kernel/btext.c (limited to 'arch/sparc') diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 05ef5380a68..33ac1a9ac88 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -221,6 +221,13 @@ config SPARC64_SMP default y depends on SPARC64 && SMP +config EARLYFB + bool "Support for early boot text console" + default y + depends on SPARC64 + help + Say Y here to enable a faster early framebuffer boot console. + choice prompt "Kernel page size" if SPARC64 default SPARC64_PAGE_SIZE_8KB diff --git a/arch/sparc/include/asm/btext.h b/arch/sparc/include/asm/btext.h new file mode 100644 index 00000000000..9b2bc6b6ed0 --- /dev/null +++ b/arch/sparc/include/asm/btext.h @@ -0,0 +1,6 @@ +#ifndef _SPARC_BTEXT_H +#define _SPARC_BTEXT_H + +extern int btext_find_display(void); + +#endif /* _SPARC_BTEXT_H */ diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index 6b3b076173f..c6316142db4 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -87,6 +87,7 @@ obj-$(CONFIG_KGDB) += kgdb_$(BITS).o obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o CFLAGS_REMOVE_ftrace.o := -pg +obj-$(CONFIG_EARLYFB) += btext.o obj-$(CONFIG_STACKTRACE) += stacktrace.o # sparc64 PCI obj-$(CONFIG_SPARC64_PCI) += pci.o pci_common.o psycho_common.o diff --git a/arch/sparc/kernel/btext.c b/arch/sparc/kernel/btext.c new file mode 100644 index 00000000000..8cc2d56ffe9 --- /dev/null +++ b/arch/sparc/kernel/btext.c @@ -0,0 +1,673 @@ +/* + * Procedures for drawing on the screen early on in the boot process. + * + * Benjamin Herrenschmidt + */ +#include +#include +#include +#include +#include + +#include +#include +#include + +#define NO_SCROLL + +#ifndef NO_SCROLL +static void scrollscreen(void); +#endif + +static void draw_byte(unsigned char c, long locX, long locY); +static void draw_byte_32(unsigned char *bits, unsigned int *base, int rb); +static void draw_byte_16(unsigned char *bits, unsigned int *base, int rb); +static void draw_byte_8(unsigned char *bits, unsigned int *base, int rb); + +#define __force_data __attribute__((__section__(".data"))) + +static int g_loc_X __force_data; +static int g_loc_Y __force_data; +static int g_max_loc_X __force_data; +static int g_max_loc_Y __force_data; + +static int dispDeviceRowBytes __force_data; +static int dispDeviceDepth __force_data; +static int dispDeviceRect[4] __force_data; +static unsigned char *dispDeviceBase __force_data; + +#define cmapsz (16*256) + +static unsigned char vga_font[cmapsz]; + +static int __init btext_initialize(unsigned int node) +{ + unsigned int width, height, depth, pitch; + unsigned long address = 0; + u32 prop; + + if (prom_getproperty(node, "width", (char *)&width, 4) < 0) + return -EINVAL; + if (prom_getproperty(node, "height", (char *)&height, 4) < 0) + return -EINVAL; + if (prom_getproperty(node, "depth", (char *)&depth, 4) < 0) + return -EINVAL; + pitch = width * ((depth + 7) / 8); + + if (prom_getproperty(node, "linebytes", (char *)&prop, 4) >= 0 && + prop != 0xffffffffu) + pitch = prop; + + if (pitch == 1) + pitch = 0x1000; + + if (prom_getproperty(node, "address", (char *)&prop, 4) >= 0) + address = prop; + + /* FIXME: Add support for PCI reg properties. Right now, only + * reliable on macs + */ + if (address == 0) + return -EINVAL; + + g_loc_X = 0; + g_loc_Y = 0; + g_max_loc_X = width / 8; + g_max_loc_Y = height / 16; + dispDeviceBase = (unsigned char *)address; + dispDeviceRowBytes = pitch; + dispDeviceDepth = depth == 15 ? 16 : depth; + dispDeviceRect[0] = dispDeviceRect[1] = 0; + dispDeviceRect[2] = width; + dispDeviceRect[3] = height; + + return 0; +} + +/* Calc the base address of a given point (x,y) */ +static unsigned char * calc_base(int x, int y) +{ + unsigned char *base = dispDeviceBase; + + base += (x + dispDeviceRect[0]) * (dispDeviceDepth >> 3); + base += (y + dispDeviceRect[1]) * dispDeviceRowBytes; + return base; +} + +static void btext_clearscreen(void) +{ + unsigned int *base = (unsigned int *)calc_base(0, 0); + unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) * + (dispDeviceDepth >> 3)) >> 2; + int i,j; + + for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++) + { + unsigned int *ptr = base; + for(j=width; j; --j) + *(ptr++) = 0; + base += (dispDeviceRowBytes >> 2); + } +} + +#ifndef NO_SCROLL +static void scrollscreen(void) +{ + unsigned int *src = (unsigned int *)calc_base(0,16); + unsigned int *dst = (unsigned int *)calc_base(0,0); + unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) * + (dispDeviceDepth >> 3)) >> 2; + int i,j; + + for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1] - 16); i++) + { + unsigned int *src_ptr = src; + unsigned int *dst_ptr = dst; + for(j=width; j; --j) + *(dst_ptr++) = *(src_ptr++); + src += (dispDeviceRowBytes >> 2); + dst += (dispDeviceRowBytes >> 2); + } + for (i=0; i<16; i++) + { + unsigned int *dst_ptr = dst; + for(j=width; j; --j) + *(dst_ptr++) = 0; + dst += (dispDeviceRowBytes >> 2); + } +} +#endif /* ndef NO_SCROLL */ + +void btext_drawchar(char c) +{ + int cline = 0; +#ifdef NO_SCROLL + int x; +#endif + switch (c) { + case '\b': + if (g_loc_X > 0) + --g_loc_X; + break; + case '\t': + g_loc_X = (g_loc_X & -8) + 8; + break; + case '\r': + g_loc_X = 0; + break; + case '\n': + g_loc_X = 0; + g_loc_Y++; + cline = 1; + break; + default: + draw_byte(c, g_loc_X++, g_loc_Y); + } + if (g_loc_X >= g_max_loc_X) { + g_loc_X = 0; + g_loc_Y++; + cline = 1; + } +#ifndef NO_SCROLL + while (g_loc_Y >= g_max_loc_Y) { + scrollscreen(); + g_loc_Y--; + } +#else + /* wrap around from bottom to top of screen so we don't + waste time scrolling each line. -- paulus. */ + if (g_loc_Y >= g_max_loc_Y) + g_loc_Y = 0; + if (cline) { + for (x = 0; x < g_max_loc_X; ++x) + draw_byte(' ', x, g_loc_Y); + } +#endif +} + +static void btext_drawtext(const char *c, unsigned int len) +{ + while (len--) + btext_drawchar(*c++); +} + +static void draw_byte(unsigned char c, long locX, long locY) +{ + unsigned char *base = calc_base(locX << 3, locY << 4); + unsigned char *font = &vga_font[((unsigned int)c) * 16]; + int rb = dispDeviceRowBytes; + + switch(dispDeviceDepth) { + case 24: + case 32: + draw_byte_32(font, (unsigned int *)base, rb); + break; + case 15: + case 16: + draw_byte_16(font, (unsigned int *)base, rb); + break; + case 8: + draw_byte_8(font, (unsigned int *)base, rb); + break; + } +} + +static unsigned int expand_bits_8[16] = { + 0x00000000, + 0x000000ff, + 0x0000ff00, + 0x0000ffff, + 0x00ff0000, + 0x00ff00ff, + 0x00ffff00, + 0x00ffffff, + 0xff000000, + 0xff0000ff, + 0xff00ff00, + 0xff00ffff, + 0xffff0000, + 0xffff00ff, + 0xffffff00, + 0xffffffff +}; + +static unsigned int expand_bits_16[4] = { + 0x00000000, + 0x0000ffff, + 0xffff0000, + 0xffffffff +}; + + +static void draw_byte_32(unsigned char *font, unsigned int *base, int rb) +{ + int l, bits; + int fg = 0xFFFFFFFFUL; + int bg = 0x00000000UL; + + for (l = 0; l < 16; ++l) + { + bits = *font++; + base[0] = (-(bits >> 7) & fg) ^ bg; + base[1] = (-((bits >> 6) & 1) & fg) ^ bg; + base[2] = (-((bits >> 5) & 1) & fg) ^ bg; + base[3] = (-((bits >> 4) & 1) & fg) ^ bg; + base[4] = (-((bits >> 3) & 1) & fg) ^ bg; + base[5] = (-((bits >> 2) & 1) & fg) ^ bg; + base[6] = (-((bits >> 1) & 1) & fg) ^ bg; + base[7] = (-(bits & 1) & fg) ^ bg; + base = (unsigned int *) ((char *)base + rb); + } +} + +static void draw_byte_16(unsigned char *font, unsigned int *base, int rb) +{ + int l, bits; + int fg = 0xFFFFFFFFUL; + int bg = 0x00000000UL; + unsigned int *eb = (int *)expand_bits_16; + + for (l = 0; l < 16; ++l) + { + bits = *font++; + base[0] = (eb[bits >> 6] & fg) ^ bg; + base[1] = (eb[(bits >> 4) & 3] & fg) ^ bg; + base[2] = (eb[(bits >> 2) & 3] & fg) ^ bg; + base[3] = (eb[bits & 3] & fg) ^ bg; + base = (unsigned int *) ((char *)base + rb); + } +} + +static void draw_byte_8(unsigned char *font, unsigned int *base, int rb) +{ + int l, bits; + int fg = 0x0F0F0F0FUL; + int bg = 0x00000000UL; + unsigned int *eb = (int *)expand_bits_8; + + for (l = 0; l < 16; ++l) + { + bits = *font++; + base[0] = (eb[bits >> 4] & fg) ^ bg; + base[1] = (eb[bits & 0xf] & fg) ^ bg; + base = (unsigned int *) ((char *)base + rb); + } +} + +static void btext_console_write(struct console *con, const char *s, + unsigned int n) +{ + btext_drawtext(s, n); +} + +static struct console btext_console = { + .name = "btext", + .write = btext_console_write, + .flags = CON_PRINTBUFFER | CON_ENABLED | CON_BOOT | CON_ANYTIME, + .index = 0, +}; + +int __init btext_find_display(void) +{ + unsigned int node; + char type[32]; + int ret; + + node = prom_inst2pkg(prom_stdout); + if (prom_getproperty(node, "device_type", type, 32) < 0) + return -ENODEV; + if (strcmp(type, "display")) + return -ENODEV; + + ret = btext_initialize(node); + if (!ret) { + btext_clearscreen(); + register_console(&btext_console); + } + return ret; +} + +static unsigned char vga_font[cmapsz] = { +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x81, 0xa5, 0x81, 0x81, 0xbd, +0x99, 0x81, 0x81, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0xff, +0xdb, 0xff, 0xff, 0xc3, 0xe7, 0xff, 0xff, 0x7e, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 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parse_early_param(); boot_flags_init(*cmdline_p); - register_console(&prom_early_console); +#ifdef CONFIG_EARLYFB + if (btext_find_display()) +#endif + register_console(&prom_early_console); if (tlb_type == hypervisor) printk("ARCH: SUN4V\n"); -- cgit v1.2.3-70-g09d2 From 3560f788fe207de25c96ea547c56fc8a750e37a5 Mon Sep 17 00:00:00 2001 From: Kristoffer Glembo Date: Wed, 2 Dec 2009 04:30:20 +0000 Subject: sparc, leon: Added Aeroflex Gaisler entry in manufacturer_info structure Signed-off-by: Kristoffer Glembo Signed-off-by: David S. Miller --- arch/sparc/kernel/cpu.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/cpu.c b/arch/sparc/kernel/cpu.c index 1446df90ef8..e447938d39c 100644 --- a/arch/sparc/kernel/cpu.c +++ b/arch/sparc/kernel/cpu.c @@ -184,6 +184,17 @@ static const struct manufacturer_info __initconst manufacturer_info[] = { FPU(3, "Fujitsu or Weitek on-chip FPU"), FPU(-1, NULL) } +},{ + 0xF, /* Aeroflex Gaisler */ + .cpu_info = { + CPU(3, "LEON"), + CPU(-1, NULL) + }, + .fpu_info = { + FPU(2, "GRFPU"), + FPU(3, "GRFPU-Lite"), + FPU(-1, NULL) + } },{ 0x17, .cpu_info = { -- cgit v1.2.3-70-g09d2 From fdd98ac96e88962d99a469bae6cc500f83ad5a17 Mon Sep 17 00:00:00 2001 From: Kristoffer Glembo Date: Wed, 2 Dec 2009 04:30:21 +0000 Subject: sparc32: Remove early interrupt enable. Enabling interrupts at this points causes the warning "start_kernel(): bug: interrupts were enabled early" to be printed in start_kernel(). Signed-off-by: Kristoffer Glembo Signed-off-by: David S. Miller --- arch/sparc/kernel/time_32.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/time_32.c b/arch/sparc/kernel/time_32.c index 614ac7b4a9d..5b2f595fe65 100644 --- a/arch/sparc/kernel/time_32.c +++ b/arch/sparc/kernel/time_32.c @@ -210,9 +210,6 @@ static void __init sbus_time_init(void) btfixup(); sparc_init_timers(timer_interrupt); - - /* Now that OBP ticker has been silenced, it is safe to enable IRQ. */ - local_irq_enable(); } void __init time_init(void) -- cgit v1.2.3-70-g09d2 From c803ba901718c313c469b3510fa93b0011482736 Mon Sep 17 00:00:00 2001 From: Kristoffer Glembo Date: Wed, 2 Dec 2009 04:30:22 +0000 Subject: sparc,leon: init_leon srmmu cleanup Removed unused assignment and capitalized srmmu name for sparc_leon Signed-off-by: Kristoffer Glembo Signed-off-by: David S. Miller --- arch/sparc/mm/srmmu.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c index d55c2553b68..367321a030d 100644 --- a/arch/sparc/mm/srmmu.c +++ b/arch/sparc/mm/srmmu.c @@ -1990,7 +1990,7 @@ void __init poke_leonsparc(void) void __init init_leon(void) { - srmmu_name = "Leon"; + srmmu_name = "LEON"; BTFIXUPSET_CALL(flush_cache_all, leon_flush_cache_all, BTFIXUPCALL_NORM); @@ -2037,8 +2037,6 @@ static void __init get_srmmu_type(void) /* First, check for sparc-leon. */ if (sparc_cpu_model == sparc_leon) { - psr_typ = 0xf; /* hardcoded ids for older models/simulators */ - psr_vers = 2; init_leon(); return; } -- cgit v1.2.3-70-g09d2 From 7f5620a5fcd658f219e85831d3691908f1eccbde Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sat, 5 Dec 2009 17:17:55 -0800 Subject: sparc: Set UTS_MACHINE correctly. "ARCH" can be just about anything, so we shouldn't end up with UTS_MACHINE of "sparc" in a 64-bit kernel build just because someone set the personality using 'sparc32' or similar. CONFIG_SPARC64 drives the compilation and therefore provides the definitive value, not "ARCH". This mirrors commit 8c6531f7a99f29ba8817ffb12cc9ecf190049bd6 (x86: correctly set UTS_MACHINE for "make ARCH=x86") Signed-off-by: David S. Miller --- arch/sparc/Makefile | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/sparc') diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile index dfe272d1446..113225b241e 100644 --- a/arch/sparc/Makefile +++ b/arch/sparc/Makefile @@ -27,6 +27,7 @@ AS := $(AS) -32 LDFLAGS := -m elf32_sparc CHECKFLAGS += -D__sparc__ export BITS := 32 +UTS_MACHINE := sparc #KBUILD_CFLAGS += -g -pipe -fcall-used-g5 -fcall-used-g7 KBUILD_CFLAGS += -m32 -pipe -mno-fpu -fcall-used-g5 -fcall-used-g7 @@ -46,6 +47,7 @@ CHECKFLAGS += -D__sparc__ -D__sparc_v9__ -D__arch64__ -m64 LDFLAGS := -m elf64_sparc export BITS := 64 +UTS_MACHINE := sparc64 KBUILD_CFLAGS += -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow \ -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare \ -- cgit v1.2.3-70-g09d2