#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/utsname.h>
+#include <sys/syscall.h>
#include <errno.h>
#define WARM_CODE
#include "warm.h"
-#include "sys_cacheflush.h"
+
+#define PFX "wARM: "
+
+/* 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 int module_inserted;
+
+static void sys_cacheflush(void *start, void *end)
+{
+#ifdef __ARM_EABI__
+ /* EABI version */
+ int num = __ARM_NR_cacheflush;
+ __asm__("mov r0, %0 ;"
+ "mov r1, %1 ;"
+ "mov r2, #0 ;"
+ "mov r7, %2 ;"
+ "swi 0" : : "r" (start), "r" (end), "r" (num)
+ : "r0", "r1", "r2", "r3", "r7");
+#else
+ /* OABI */
+ __asm__("mov r0, %0 ;"
+ "mov r1, %1 ;"
+ "mov r2, #0 ;"
+ "swi %2" : : "r" (start), "r" (end), "i" __ARM_NR_cacheflush
+ : "r0", "r1", "r2", "r3");
+#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 == NULL)
+ return -1;
+
+ fseek(f, 0, SEEK_END);
+ len = ftell(f);
+ fseek(f, 0, SEEK_SET);
+
+ buff = malloc(len);
+ if (buff == NULL)
+ goto fail0;
+
+ read_len = fread(buff, 1, len, f);
+ if (read_len != len) {
+ fprintf(stderr, PFX "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 buff[128];
+ char buff1[32], buff2[128];
+ int ret;
+
+ memset(&unm, 0, sizeof(unm));
+ uname(&unm);
+
+ if (strlen(unm.release) < 3 || unm.release[1] != '.') {
+ fprintf(stderr, PFX "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;
- memset(&unm, 0, sizeof(unm));
- uname(&unm);
- snprintf(buff, sizeof(buff), "/sbin/insmod warm_%s.ko", unm.release);
+ 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 */
- system(buff);
+ ret = system(buff2);
+ if (ret != 0) {
+ fprintf(stderr, PFX "system/insmod failed: %d %d\n", ret, errno);
+ if (kernel_version >= 0x26) {
+ ret = manual_insmod_26(buff1, "verbose=1");
+ if (ret != 0)
+ fprintf(stderr, PFX "manual insmod also failed: %d\n", ret);
+ }
+ }
+ if (ret == 0)
+ module_inserted = 1;
+
warm_fd = open("/proc/warm", O_RDWR);
if (warm_fd >= 0)
return 0;
- fprintf(stderr, "wARM: can't init, acting as sys_cacheflush wrapper\n");
+fail:
+ fprintf(stderr, PFX "can't init, acting as sys_cacheflush wrapper\n");
return -1;
}
void warm_finish(void)
{
- if (warm_fd >= 0)
- close(warm_fd);
- system("rmmod warm");
+ char name[32], cmd[64];
+ int ret;
+
+ if (warm_fd < 0)
+ return;
+
+ close(warm_fd);
+ warm_fd = -1;
+
+ if (module_inserted) {
+ 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, PFX "system/rmmod failed: %d %d\n", ret, errno);
+ manual_rmmod(name);
+ }
+ }
}
int warm_cache_op_range(int op, void *addr, unsigned long size)
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;
}
ret = ioctl(warm_fd, WARMC_CACHE_OP, &wop);
if (ret != 0) {
- perror("WARMC_CACHE_OP failed");
+ perror(PFX "WARMC_CACHE_OP failed");
return -1;
}
int warm_cache_op_all(int op)
{
- return warm_cache_op_range(op, NULL, (size_t)-1);
+ 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)
ret = ioctl(warm_fd, WARMC_CHANGE_CB, &ccb);
if (ret != 0) {
- perror("WARMC_CHANGE_CB failed");
+ perror(PFX "WARMC_CHANGE_CB failed");
return -1;
}
ptrio = (unsigned long)ptr;
ret = ioctl(warm_fd, WARMC_VIRT2PHYS, &ptrio);
if (ret != 0) {
- perror("WARMC_VIRT2PHYS failed");
+ perror(PFX "WARMC_VIRT2PHYS failed");
return (unsigned long)-1;
}
return ptrio;
}
+int warm_do_section(void *virt_addr, unsigned long phys_addr,
+ unsigned long size, int cb, int is_unmap)
+{
+ struct warm_map_op mop;
+ unsigned long vaddr;
+ int ret;
+
+ if (warm_fd < 0)
+ return -1;
+
+ vaddr = (unsigned long)virt_addr;
+ if (vaddr & 0xfffff) {
+ fprintf(stderr, PFX "virt_addr is unaligned\n");
+ return -1;
+ }
+ if (phys_addr & 0xfffff) {
+ fprintf(stderr, PFX "phys_addr is unaligned\n");
+ return -1;
+ }
+
+ mop.virt_addr = vaddr;
+ mop.phys_addr = phys_addr;
+ mop.size = size;
+ mop.cb = cb;
+ mop.is_unmap = is_unmap;
+
+ ret = ioctl(warm_fd, WARMC_MMAP, &mop);
+ if (ret != 0) {
+ perror(PFX "WARMC_MMAP failed");
+ return -1;
+ }
+
+ return 0;
+}
+
+int warm_mmap_section(void *virt_addr, unsigned long phys_addr,
+ unsigned long size, int cb)
+{
+ return warm_do_section(virt_addr, phys_addr, size, cb, 0);
+}
+
+int warm_munmap_section(void *virt_addr, unsigned long size)
+{
+ return warm_do_section(virt_addr, 0, size, 0, 1);
+}
notaz.gp2x.de / warm.git / blobdiff