diff options
Diffstat (limited to 'sys/alpha/alpha/mem.c')
| -rw-r--r-- | sys/alpha/alpha/mem.c | 167 |
1 files changed, 20 insertions, 147 deletions
diff --git a/sys/alpha/alpha/mem.c b/sys/alpha/alpha/mem.c index a64ea2aadf4a..fdc59caa6fd2 100644 --- a/sys/alpha/alpha/mem.c +++ b/sys/alpha/alpha/mem.c @@ -59,84 +59,18 @@ __FBSDID("$FreeBSD$"); #include <sys/uio.h> #include <machine/md_var.h> -#ifdef PERFMON -#include <machine/perfmon.h> -#endif #include <vm/vm.h> #include <vm/pmap.h> #include <vm/vm_extern.h> -static struct cdev *memdev, *kmemdev; -#ifdef PERFMON -static struct cdev *perfdev; -#endif /* PERFMON */ - -static d_open_t mmopen; -static d_close_t mmclose; -static d_read_t mmrw; -static d_ioctl_t mmioctl; -static d_mmap_t memmmap; - -#define CDEV_MAJOR 2 -static struct cdevsw mem_cdevsw = { - .d_version = D_VERSION, - .d_open = mmopen, - .d_close = mmclose, - .d_read = mmrw, - .d_write = mmrw, - .d_ioctl = mmioctl, - .d_mmap = memmmap, - .d_name = "mem", - .d_maj = CDEV_MAJOR, - .d_flags = D_MEM | D_NEEDGIANT, -}; +#include <machine/memdev.h> struct mem_range_softc mem_range_softc; -static int -mmclose(struct cdev *dev, int flags, int fmt, struct thread *td) -{ - switch (minor(dev)) { -#ifdef PERFMON - case 32: - return perfmon_close(dev, flags, fmt, td); -#endif - default: - break; - } - return (0); -} - -static int -mmopen(struct cdev *dev, int flags, int fmt, struct thread *td) -{ - int error; - - switch (minor(dev)) { - case 0: - case 1: - if (flags & FWRITE) { - error = securelevel_gt(td->td_ucred, 0); - if (error) - return (error); - } - break; - case 32: -#ifdef PERFMON - return perfmon_open(dev, flags, fmt, td); -#else - return ENODEV; -#endif - default: - break; - } - return (0); -} - -/*ARGSUSED*/ -static int -mmrw(struct cdev *dev, struct uio *uio, int flags) +/* ARGSUSED */ +int +memrw(struct cdev *dev, struct uio *uio, int flags) { vm_offset_t o, v; int c = 0; @@ -152,13 +86,10 @@ mmrw(struct cdev *dev, struct uio *uio, int flags) uio->uio_iov++; uio->uio_iovcnt--; if (uio->uio_iovcnt < 0) - panic("mmrw"); + panic("memrw"); continue; } - switch (minor(dev)) { - -/* minor device 0 is physical memory */ - case 0: + if (minor(dev) == CDEV_MINOR_MEM) { v = uio->uio_offset; kmemphys: /* Allow reads only in RAM. */ @@ -174,9 +105,8 @@ kmemphys: error = uiomove((caddr_t)ALPHA_PHYS_TO_K0SEG(v), c, uio); continue; - -/* minor device 1 is kernel memory */ - case 1: + } + else if (minor(dev) == CDEV_MINOR_KMEM) { v = uio->uio_offset; if (v >= ALPHA_K0SEG_BASE && v <= ALPHA_K0SEG_END) { @@ -186,8 +116,9 @@ kmemphys: c = min(iov->iov_len, MAXPHYS); /* - * Make sure that all of the pages are currently resident so - * that we don't create any zero-fill pages. + * Make sure that all of the pages are currently + * resident so that we don't create any zero-fill + * pages. */ addr = trunc_page(v); eaddr = round_page(v + c); @@ -203,22 +134,16 @@ kmemphys: error = uiomove((caddr_t)v, c, uio); continue; } - - if (error) - break; - iov->iov_base = (char *)iov->iov_base + c; - iov->iov_len -= c; - uio->uio_offset += c; - uio->uio_resid -= c; + /* else panic! */ } return (error); } -/*******************************************************\ -* allow user processes to MMAP some memory sections * -* instead of going through read/write * -\*******************************************************/ -static int +/* + * allow user processes to MMAP some memory sections + * instead of going through read/write + */ +int memmmap(struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, int prot) { /* @@ -227,7 +152,7 @@ memmmap(struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, int prot) * could be transient and hence incorrect or invalid at * a later time. */ - if (minor(dev) != 0) + if (minor(dev) != CDEV_MINOR_MEM) return (-1); /* @@ -239,59 +164,7 @@ memmmap(struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, int prot) return (0); } -static int -mmioctl(struct cdev *dev, u_long cmd, caddr_t cmdarg, int flags, struct thread *td) -{ - switch(minor(dev)) { -#ifdef PERFMON - case 32: - return perfmon_ioctl(dev, cmd, cmdarg, flags, td); -#endif - default: - return ENODEV; - } - - return (0); -} - -static int -mem_modevent(module_t mod, int type, void *data) +void +dev_mem_md_init(void) { - switch(type) { - case MOD_LOAD: - if (bootverbose) - printf("mem: <memory & I/O>\n"); -/* XXX - ??? */ -#if 0 - /* Initialise memory range handling */ - if (mem_range_softc.mr_op != NULL) - mem_range_softc.mr_op->init(&mem_range_softc); -#endif - - memdev = make_dev(&mem_cdevsw, 0, UID_ROOT, GID_KMEM, - 0640, "mem"); - kmemdev = make_dev(&mem_cdevsw, 1, UID_ROOT, GID_KMEM, - 0640, "kmem"); -#ifdef PERFMON - perfdev = make_dev(&mem_cdevsw, 32, UID_ROOT, GID_KMEM, - 0640, "perfmon"); -#endif /* PERFMON */ - return 0; - - case MOD_UNLOAD: - destroy_dev(memdev); - destroy_dev(kmemdev); -#ifdef PERFMON - destroy_dev(perfdev); -#endif /* PERFMON */ - return 0; - - case MOD_SHUTDOWN: - return 0; - - default: - return EOPNOTSUPP; - } } - -DEV_MODULE(mem, mem_modevent, NULL); |