diff options
Diffstat (limited to 'sys/ia64/ia64/mem.c')
| -rw-r--r-- | sys/ia64/ia64/mem.c | 171 |
1 files changed, 21 insertions, 150 deletions
diff --git a/sys/ia64/ia64/mem.c b/sys/ia64/ia64/mem.c index d03051f..79c97ee 100644 --- a/sys/ia64/ia64/mem.c +++ b/sys/ia64/ia64/mem.c @@ -34,9 +34,11 @@ * * from: Utah $Hdr: mem.c 1.13 89/10/08$ * from: @(#)mem.c 7.2 (Berkeley) 5/9/91 - * $FreeBSD$ */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + /* * Memory special file */ @@ -58,38 +60,12 @@ #include <machine/cpu.h> #include <machine/frame.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; @@ -99,49 +75,9 @@ ia64_pa_access(vm_offset_t pa) return (VM_PROT_READ|VM_PROT_WRITE); } -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(strct cdev *dev, struct uio *uio, int flags) { struct iovec *iov; vm_offset_t addr, eaddr, o, v; @@ -154,14 +90,11 @@ 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. */ @@ -177,9 +110,8 @@ kmemphys: c = min(uio->uio_resid, (int)(PAGE_SIZE - o)); error = uiomove((caddr_t)IA64_PHYS_TO_RR7(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 >= IA64_RR_BASE(6)) { @@ -205,27 +137,18 @@ kmemphys: return (EFAULT); error = uiomove((caddr_t)v, c, uio); continue; - - default: - return (ENODEV); } - - 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 -memmmap(struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, int prot) +/* + * allow user processes to MMAP some memory sections + * instead of going through read/write + */ +int +memmmap(strct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, int prot) { /* * /dev/mem is the only one that makes sense through this @@ -233,7 +156,7 @@ 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); /* @@ -245,59 +168,7 @@ 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) +void +dev_mem_md_init(void) { - 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) -{ - 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); |
