diff options
| -rw-r--r-- | arm/warm.c | 191 | ||||
| -rw-r--r-- | arm/warm.h | 47 |
2 files changed, 2 insertions, 236 deletions
@@ -34,21 +34,11 @@ #include <sys/stat.h> #include <unistd.h> #include <fcntl.h> -#include <sys/ioctl.h> -#include <sys/utsname.h> #include <sys/syscall.h> #include <errno.h> -#define WARM_CODE #include "warm.h" -/* provided by glibc */ -extern long init_module(void *, unsigned long, const char *); -extern long delete_module(const char *, unsigned int); - -static int warm_fd = -1; -static int kernel_version; - static void sys_cacheflush(void *start, void *end) { #ifdef __ARM_EABI__ @@ -70,185 +60,8 @@ static void sys_cacheflush(void *start, void *end) #endif } -/* Those are here because system() occasionaly fails on Wiz - * with errno 12 for some unknown reason */ -static int manual_insmod_26(const char *fname, const char *opts) -{ - unsigned long len, read_len; - int ret = -1; - void *buff; - FILE *f; - - f = fopen(fname, "rb"); - if (!f) - return -1; - - fseek(f, 0, SEEK_END); - len = ftell(f); - fseek(f, 0, SEEK_SET); - - buff = malloc(len); - if (!buff) - goto fail0; - - read_len = fread(buff, 1, len, f); - if (read_len != len) { - fprintf(stderr, "failed to read module\n"); - goto fail1; - } - - ret = init_module(buff, len, opts); - -fail1: - free(buff); -fail0: - fclose(f); - return ret; -} - -static int manual_rmmod(const char *name) -{ - return delete_module(name, O_NONBLOCK|O_EXCL); -} - -int warm_init(void) -{ - struct utsname unm; - char buff1[32], buff2[128]; - int ret; - - memset(&unm, 0, sizeof(unm)); - uname(&unm); - - if (strlen(unm.release) < 3 || unm.release[1] != '.') { - fprintf(stderr, "unexpected version string: %s\n", unm.release); - goto fail; - } - kernel_version = ((unm.release[0] - '0') << 4) | (unm.release[2] - '0'); - - warm_fd = open("/proc/warm", O_RDWR); - if (warm_fd >= 0) - return 0; - - snprintf(buff1, sizeof(buff1), "warm_%s.%s", unm.release, kernel_version >= 0x26 ? "ko" : "o"); - snprintf(buff2, sizeof(buff2), "/sbin/insmod %s verbose=1", buff1); - - /* try to insmod */ - ret = system(buff2); - if (ret != 0) { - fprintf(stderr, "system/insmod failed: %d %d\n", ret, errno); - if (kernel_version >= 0x26) { - ret = manual_insmod_26(buff1, "verbose=1"); - if (ret != 0) - fprintf(stderr, "manual insmod also failed: %d\n", ret); - } - } - - warm_fd = open("/proc/warm", O_RDWR); - if (warm_fd >= 0) - return 0; - -fail: - fprintf(stderr, "wARM: can't init, acting as sys_cacheflush wrapper\n"); - return -1; -} - -void warm_finish(void) -{ - char name[32], cmd[64]; - int ret; - - if (warm_fd < 0) - return; - - close(warm_fd); - warm_fd = -1; - - if (kernel_version < 0x26) { - struct utsname unm; - memset(&unm, 0, sizeof(unm)); - uname(&unm); - snprintf(name, sizeof(name), "warm_%s", unm.release); - } - else - strcpy(name, "warm"); - - snprintf(cmd, sizeof(cmd), "/sbin/rmmod %s", name); - ret = system(cmd); - if (ret != 0) { - fprintf(stderr, "system/rmmod failed: %d %d\n", ret, errno); - manual_rmmod(name); - } -} - int warm_cache_op_range(int op, void *addr, unsigned long size) { - struct warm_cache_op wop; - int ret; - - if (warm_fd < 0) { - /* note that this won't work for warm_cache_op_all */ - sys_cacheflush(addr, (char *)addr + size); - return -1; - } - - wop.ops = op; - wop.addr = (unsigned long)addr; - wop.size = size; - - ret = ioctl(warm_fd, WARMC_CACHE_OP, &wop); - if (ret != 0) { - perror("WARMC_CACHE_OP failed"); - return -1; - } - - return 0; -} - -int warm_cache_op_all(int op) -{ - return warm_cache_op_range(op, NULL, (unsigned long)-1); -} - -int warm_change_cb_range(int cb, int is_set, void *addr, unsigned long size) -{ - struct warm_change_cb ccb; - int ret; - - if (warm_fd < 0) - return -1; - - ccb.addr = (unsigned long)addr; - ccb.size = size; - ccb.cb = cb; - ccb.is_set = is_set; - - ret = ioctl(warm_fd, WARMC_CHANGE_CB, &ccb); - if (ret != 0) { - perror("WARMC_CHANGE_CB failed"); - return -1; - } - - return 0; -} - -int warm_change_cb_upper(int cb, int is_set) -{ - return warm_change_cb_range(cb, is_set, 0, 0); + sys_cacheflush(addr, (char *)addr + size); + return -1; } - -unsigned long warm_virt2phys(const void *ptr) -{ - unsigned long ptrio; - int ret; - - ptrio = (unsigned long)ptr; - ret = ioctl(warm_fd, WARMC_VIRT2PHYS, &ptrio); - if (ret != 0) { - perror("WARMC_VIRT2PHYS failed"); - return (unsigned long)-1; - } - - return ptrio; -} - @@ -39,62 +39,15 @@ #define WOP_D_INVALIDATE (1 << 1) #define WOP_I_INVALIDATE (1 << 2) -/* change C and B bits (warm_change_cb_*) - * if is_set in not zero, bits are set, else cleared. - * the address for range function is virtual address. - */ -#define WCB_C_BIT (1 << 0) -#define WCB_B_BIT (1 << 1) - -#ifndef __ASSEMBLER__ - #ifdef __cplusplus extern "C" { #endif -int warm_init(void); - int warm_cache_op_range(int ops, void *virt_addr, unsigned long size); -int warm_cache_op_all(int ops); - -int warm_change_cb_upper(int cb, int is_set); -int warm_change_cb_range(int cb, int is_set, void *virt_addr, unsigned long size); - -unsigned long warm_virt2phys(const void *ptr); - -void warm_finish(void); #ifdef __cplusplus } #endif -/* internal */ -#ifdef WARM_CODE - -#include <sys/ioctl.h> - -#define WARM_IOCTL_BASE 'A' - -struct warm_cache_op -{ - unsigned long addr; - unsigned long size; - int ops; -}; - -struct warm_change_cb -{ - unsigned long addr; - unsigned long size; - int cb; - int is_set; -}; - -#define WARMC_CACHE_OP _IOW(WARM_IOCTL_BASE, 0, struct warm_cache_op) -#define WARMC_CHANGE_CB _IOW(WARM_IOCTL_BASE, 1, struct warm_change_cb) -#define WARMC_VIRT2PHYS _IOWR(WARM_IOCTL_BASE, 2, unsigned long) - -#endif /* WARM_CODE */ -#endif /* !__ASSEMBLER__ */ #endif /* __WARM_H__ */ |