/* * rsrc_nonstatic.c -- Resource management routines for !SS_CAP_STATIC_MAP sockets * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * The initial developer of the original code is David A. Hinds * . Portions created by David A. Hinds * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. * * (C) 1999 David A. Hinds */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "cs_internal.h" MODULE_AUTHOR("David A. Hinds, Dominik Brodowski"); MODULE_LICENSE("GPL"); /* Parameters that can be set with 'insmod' */ #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444) INT_MODULE_PARM(probe_mem, 1); /* memory probe? */ #ifdef CONFIG_PCMCIA_PROBE INT_MODULE_PARM(probe_io, 1); /* IO port probe? */ INT_MODULE_PARM(mem_limit, 0x10000); #endif /* for io_db and mem_db */ struct resource_map { u_long base, num; struct resource_map *next; }; struct socket_data { struct resource_map mem_db; struct resource_map io_db; unsigned int rsrc_mem_probe; }; static DEFINE_MUTEX(rsrc_mutex); #define MEM_PROBE_LOW (1 << 0) #define MEM_PROBE_HIGH (1 << 1) /*====================================================================== Linux resource management extensions ======================================================================*/ static struct resource * make_resource(resource_size_t b, resource_size_t n, int flags, const char *name) { struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL); if (res) { res->name = name; res->start = b; res->end = b + n - 1; res->flags = flags; } return res; } static struct resource * claim_region(struct pcmcia_socket *s, resource_size_t base, resource_size_t size, int type, char *name) { struct resource *res, *parent; parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource; res = make_resource(base, size, type | IORESOURCE_BUSY, name); if (res) { #ifdef CONFIG_PCI if (s && s->cb_dev) parent = pci_find_parent_resource(s->cb_dev, res); #endif if (!parent || request_resource(parent, res)) { kfree(res); res = NULL; } } return res; } static void free_region(struct resource *res) { if (res) { release_resource(res); kfree(res); } } /*====================================================================== These manage the internal databases of available resources. ======================================================================*/ static int add_interval(struct resource_map *map, u_long base, u_long num) { struct resource_map *p, *q; for (p = map; ; p = p->next) { if ((p != map) && (p->base+p->num-1 >= base)) return -1; if ((p->next == map) || (p->next->base > base+num-1)) break; } q = kmalloc(sizeof(struct resource_map), GFP_KERNEL); if (!q) { printk(KERN_WARNING "out of memory to update resources\n"); return -ENOMEM; } q->base = base; q->num = num; q->next = p->next; p->next = q; return 0; } /*====================================================================*/ static int sub_interval(struct resource_map *map, u_long base, u_long num) { struct resource_map *p, *q; for (p = map; ; p = q) { q = p->next; if (q == map) break; if ((q->base+q->num > base) && (base+num > q->base)) { if (q->base >= base) { if (q->base+q->num <= base+num) { /* Delete whole block */ p->next = q->next; kfree(q); /* don't advance the pointer yet */ q = p; } else { /* Cut off bit from the front */ q->num = q->base + q->num - base - num; q->base = base + num; } } else if (q->base+q->num <= base+num) { /* Cut off bit from the end */ q->num = base - q->base; } else { /* Split the block into two pieces */ p = kmalloc(sizeof(struct resource_map), GFP_KERNEL); if (!p) { printk(KERN_WARNING "out of memory to update resources\n"); return -ENOMEM; } p->base = base+num; p->num = q->base+q->num - p->base; q->num = base - q->base; p->next = q->next ; q->next = p; } } } return 0; } /*====================================================================== These routines examine a region of IO or memory addresses to determine what ranges might be genuinely available. ======================================================================*/ #ifdef CONFIG_PCMCIA_PROBE static void do_io_probe(struct pcmcia_socket *s, unsigned int base, unsigned int num) { struct resource *res; struct socket_data *s_data = s->resource_data; unsigned int i, j, bad; int any; u_char *b, hole, most; dev_printk(KERN_INFO, &s->dev, "cs: IO port probe %#x-%#x:", base, base+num-1); /* First, what does a floating port look like? */ b = kzalloc(256, GFP_KERNEL); if (!b) { printk("\n"); dev_printk(KERN_ERR, &s->dev, "do_io_probe: unable to kmalloc 256 bytes"); return; } for (i = base, most = 0; i < base+num; i += 8) { res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA ioprobe"); if (!res) continue; hole = inb(i); for (j = 1; j < 8; j++) if (inb(i+j) != hole) break; free_region(res); if ((j == 8) && (++b[hole] > b[most])) most = hole; if (b[most] == 127) break; } kfree(b); bad = any = 0; for (i = base; i < base+num; i += 8) { res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA ioprobe"); if (!res) continue; for (j = 0; j < 8; j++) if (inb(i+j) != most) break; free_region(res); if (j < 8) { if (!any) printk(" excluding"); if (!bad) bad = any = i; } else { if (bad) { sub_interval(&s_data->io_db, bad, i-bad); printk(" %#x-%#x", bad, i-1); bad = 0; } } } if (bad) { if ((num > 16) && (bad == base) && (i == base+num)) { printk(" nothing: probe failed.\n"); return; } else { sub_interval(&s_data->io_db, bad, i-bad); printk(" %#x-%#x", bad, i-1); } } printk(any ? "\n" : " clean.\n"); } #endif /*======================================================================*/ /** * readable() - iomem validation function for cards with a valid CIS */ static int readable(struct pcmcia_socket *s, struct resource *res, unsigned int *count) { int ret = -EINVAL; s->cis_mem.res = res; s->cis_virt = ioremap(res->start, s->map_size); if (s->cis_virt) { /* as we're only called from pcmcia.c, we're safe */ if (s->callback->validate) ret = s->callback->validate(s, count); /* invalidate mapping */ iounmap(s->cis_virt); s->cis_virt = NULL; } s->cis_mem.res = NULL; if ((ret) || (*count == 0)) return -EINVAL; return 0; } /** * checksum() - iomem validation function for simple memory cards */ static int checksum(struct pcmcia_socket *s, struct resource *res, unsigned int *value) { pccard_mem_map map; int i, a = 0, b = -1, d; void __iomem *virt; virt = ioremap(res->start, s->map_size); if (virt) { map.map = 0; map.flags = MAP_ACTIVE; map.speed = 0; map.res = res; map.card_start = 0; s->ops->set_mem_map(s, &map); /* Don't bother checking every word... */ for (i = 0; i < s->map_size; i += 44) { d = readl(virt+i); a += d; b &= d; } map.flags = 0; s->ops->set_mem_map(s, &map); iounmap(virt); } if (b == -1) return -EINVAL; *value = a; return 0; } /** * do_validate_mem() - low level validate a memory region for PCMCIA use * @s: PCMCIA socket to validate * @base: start address of resource to check * @size: size of resource to check * @validate: validation function to use * * do_validate_mem() splits up the memory region which is to be checked * into two parts. Both are passed to the @validate() function. If * @validate() returns non-zero, or the value parameter to @validate() * is zero, or the value parameter is different between both calls, * the check fails, and -EINVAL is returned. Else, 0 is returned. */ static int do_validate_mem(struct pcmcia_socket *s, unsigned long base, unsigned long size, int validate (struct pcmcia_socket *s, struct resource *res, unsigned int *value)) { struct resource *res1, *res2; unsigned int info1 = 1, info2 = 1; int ret = -EINVAL; res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "PCMCIA memprobe"); res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "PCMCIA memprobe"); if (res1 && res2) { ret = 0; if (validate) { ret = validate(s, res1, &info1); ret += validate(s, res2, &info2); } } free_region(res2); free_region(res1); dev_dbg(&s->dev, "cs: memory probe 0x%06lx-0x%06lx: %p %p %u %u %u", base, base+size-1, res1, res2, ret, info1, info2); if ((ret) || (info1 != info2) || (info1 == 0)) return -EINVAL; return 0; } /** * do_mem_probe() - validate a memory region for PCMCIA use * @s: PCMCIA socket to validate * @base: start address of resource to check * @num: size of resource to check * @validate: validation function to use * @fallback: validation function to use if validate fails * * do_mem_probe() checks a memory region for use by the PCMCIA subsystem. * To do so, the area is split up into sensible parts, and then passed * into the @validate() function. Only if @validate() and @fallback() fail, * the area is marked as unavaibale for use by the PCMCIA subsystem. The * function returns the size of the usable memory area. */ static int do_mem_probe(struct pcmcia_socket *s, u_long base, u_long num, int validate (struct pcmcia_socket *s, struct resource *res, unsigned int *value), int fallback (struct pcmcia_socket *s, struct resource *res, unsigned int *value)) { struct socket_data *s_data = s->resource_data; u_long i, j, bad, fail, step; dev_printk(KERN_INFO, &s->dev, "cs: memory probe 0x%06lx-0x%06lx:", base, base+num-1); bad = fail = 0; step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff); /* don't allow too large steps */ if (step > 0x800000) step = 0x800000; /* cis_readable wants to map 2x map_size */ if (step < 2 * s->map_size) step = 2 * s->map_size; for (i = j = base; i < base+num; i = j + step) { if (!fail) { for (j = i; j < base+num; j += step) { if (!do_validate_mem(s, j, step, validate)) break; } fail = ((i == base) && (j == base+num)); } if ((fail) && (fallback)) { for (j = i; j < base+num; j += step) if (!do_validate_mem(s, j, step, fallback)) break; } if (i != j) { if (!bad) printk(" excluding"); printk(" %#05lx-%#05lx", i, j-1); sub_interval(&s_data->mem_db, i, j-i); bad += j-i; } } printk(bad ? "\n" : " clean.\n"); return num - bad; } #ifdef CONFIG_PCMCIA_PROBE /** * inv_probe() - top-to-bottom search for one usuable high memory area * @s: PCMCIA socket to validate * @m: resource_map to check */ static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) { struct socket_data *s_data = s->resource_data; u_long ok; if (m == &s_data->mem_db) return 0; ok = inv_probe(m->next, s); if (ok) { if (m->base >= 0x100000) sub_interval(&s_data->mem_db, m->base, m->num); return ok; } if (m->base < 0x100000) return 0; return do_mem_probe(s, m->base, m->num, readable, checksum); } /** * validate_mem() - memory probe function * @s: PCMCIA socket to validate * @probe_mask: MEM_PROBE_LOW | MEM_PROBE_HIGH * * The memory probe. If the memory list includes a 64K-aligned block * below 1MB, we probe in 64K chunks, and as soon as we accumulate at * least mem_limit free space, we quit. Returns 0 on usuable ports. */ static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) { struct resource_map *m, mm; static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; unsigned long b, i, ok = 0; struct socket_data *s_data = s->resource_data; /* We do up to four passes through the list */ if (probe_mask & MEM_PROBE_HIGH) { if (inv_probe(s_data->mem_db.next, s) > 0) return 0; dev_printk(KERN_NOTICE, &s->dev, "cs: warning: no high memory space available!\n"); return -ENODEV; } for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { mm = *m; /* Only probe < 1 MB */ if (mm.base >= 0x100000) continue; if ((mm.base | mm.num) & 0xffff) { ok += do_mem_probe(s, mm.base, mm.num, readable, checksum); continue; } /* Special probe for 64K-aligned block */ for (i = 0; i < 4; i++) { b = order[i] << 12; if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) { if (ok >= mem_limit) sub_interval(&s_data->mem_db, b, 0x10000); else ok += do_mem_probe(s, b, 0x10000, readable, checksum); } } } if (ok > 0) return 0; return -ENODEV; } #else /* CONFIG_PCMCIA_PROBE */ /** * validate_mem() - memory probe function * @s: PCMCIA socket to validate * @probe_mask: ignored * * Returns 0 on usuable ports. */ static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) { struct resource_map *m, mm; struct socket_data *s_data = s->resource_data; unsigned long ok = 0; for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { mm = *m; ok += do_mem_probe(s, mm.base, mm.num, readable, checksum); } if (ok > 0) return 0; return -ENODEV; } #endif /* CONFIG_PCMCIA_PROBE */ /** * pcmcia_nonstatic_validate_mem() - try to validate iomem for PCMCIA use * @s: PCMCIA socket to validate * * This is tricky... when we set up CIS memory, we try to validate * the memory window space allocations. * * Locking note: Must be called with skt_mutex held! */ static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) { struct socket_data *s_data = s->resource_data; unsigned int probe_mask = MEM_PROBE_LOW; int ret = 0; if (!probe_mem) return 0; mutex_lock(&rsrc_mutex); if (s->features & SS_CAP_PAGE_REGS) probe_mask = MEM_PROBE_HIGH; if (probe_mask & ~s_data->rsrc_mem_probe) { if (s->state & SOCKET_PRESENT) { ret = validate_mem(s, probe_mask); if (!ret) s_data->rsrc_mem_probe |= probe_mask; } } mutex_unlock(&rsrc_mutex); return ret; } struct pcmcia_align_data { unsigned long mask; unsigned long offset; struct resource_map *map; }; static void pcmcia_common_align(void *align_data, struct resource *res, resource_size_t size, resource_size_t align) { struct pcmcia_align_data *data = align_data; resource_size_t start; /* * Ensure that we have the correct start address */ start = (res->start & ~data->mask) + data->offset; if (start < res->start) start += data->mask + 1; res->start = start; } static void pcmcia_align(void *align_data, struct resource *res, resource_size_t size, resource_size_t align) { struct pcmcia_align_data *data = align_data; struct resource_map *m; pcmcia_common_align(data, res, size, align); for (m = data->map->next; m != data->map; m = m->next) { unsigned long start = m->base; unsigned long end = m->base + m->num - 1; /* * If the lower resources are not available, try aligning * to this entry of the resource database to see if it'll * fit here. */ if (res->start < start) { res->start = start; pcmcia_common_align(data, res, size, align); } /* * If we're above the area which was passed in, there's * no point proceeding. */ if (res->start >= res->end) break; if ((res->start + size - 1) <= end) break; } /* * If we failed to find something suitable, ensure we fail. */ if (m == data->map) res->start = res->end; } /* * Adjust an existing IO region allocation, but making sure that we don't * encroach outside the resources which the user supplied. */ static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start, unsigned long r_end, struct pcmcia_socket *s) { struct resource_map *m; struct socket_data *s_data = s->resource_data; int ret = -ENOMEM; mutex_lock(&rsrc_mutex); for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { unsigned long start = m->base; unsigned long end = m->base + m->num - 1; if (start > r_start || r_end > end) continue; ret = adjust_resource(res, r_start, r_end - r_start + 1); break; } mutex_unlock(&rsrc_mutex); return ret; } /*====================================================================== These find ranges of I/O ports or memory addresses that are not currently allocated by other devices. The 'align' field should reflect the number of bits of address that need to be preserved from the initial value of *base. It should be a power of two, greater than or equal to 'num'. A value of 0 means that all bits of *base are significant. *base should also be strictly less than 'align'. ======================================================================*/ static struct resource *nonstatic_find_io_region(unsigned long base, int num, unsigned long align, struct pcmcia_socket *s) { struct resource *res = make_resource(0, num, IORESOURCE_IO, dev_name(&s->dev)); struct socket_data *s_data = s->resource_data; struct pcmcia_align_data data; unsigned long min = base; int ret; if (align == 0) align = 0x10000; data.mask = align - 1; data.offset = base & data.mask; data.map = &s_data->io_db; mutex_lock(&rsrc_mutex); #ifdef CONFIG_PCI if (s->cb_dev) { ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, min, 0, pcmcia_align, &data); } else #endif ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, 1, pcmcia_align, &data); mutex_unlock(&rsrc_mutex); if (ret != 0) { kfree(res); res = NULL; } return res; } static struct resource *nonstatic_find_mem_region(u_long base, u_long num, u_long align, int low, struct pcmcia_socket *s) { struct resource *res = make_resource(0, num, IORESOURCE_MEM, dev_name(&s->dev)); struct socket_data *s_data = s->resource_data; struct pcmcia_align_data data; unsigned long min, max; int ret, i; low = low || !(s->features & SS_CAP_PAGE_REGS); data.mask = align - 1; data.offset = base & data.mask; data.map = &s_data->mem_db; for (i = 0; i < 2; i++) { if (low) { max = 0x100000UL; min = base < max ? base : 0; } else { max = ~0UL; min = 0x100000UL + base; } mutex_lock(&rsrc_mutex); #ifdef CONFIG_PCI if (s->cb_dev) { ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, min, 0, pcmcia_align, &data); } else #endif ret = allocate_resource(&iomem_resource, res, num, min, max, 1, pcmcia_align, &data); mutex_unlock(&rsrc_mutex); if (ret == 0 || low) break; low = 1; } if (ret != 0) { kfree(res); res = NULL; } return res; } static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) { struct socket_data *data = s->resource_data; unsigned long size = end - start + 1; int ret = 0; if (end < start) return -EINVAL; mutex_lock(&rsrc_mutex); switch (action) { case ADD_MANAGED_RESOURCE: ret = add_interval(&data->mem_db, start, size); if (!ret) do_mem_probe(s, start, size, NULL, NULL); break; case REMOVE_MANAGED_RESOURCE: ret = sub_interval(&data->mem_db, start, size); break; default: ret = -EINVAL; } mutex_unlock(&rsrc_mutex); return ret; } static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) { struct socket_data *data = s->resource_data; unsigned long size = end - start + 1; int ret = 0; if (end < start) return -EINVAL; if (end > IO_SPACE_LIMIT) return -EINVAL; mutex_lock(&rsrc_mutex); switch (action) { case ADD_MANAGED_RESOURCE: if (add_interval(&data->io_db, start, size) != 0) { ret = -EBUSY; break; } #ifdef CONFIG_PCMCIA_PROBE if (probe_io) do_io_probe(s, start, size); #endif break; case REMOVE_MANAGED_RESOURCE: sub_interval(&data->io_db, start, size); break; default: ret = -EINVAL; break; } mutex_unlock(&rsrc_mutex); return ret; } #ifdef CONFIG_PCI static int nonstatic_autoadd_resources(struct pcmcia_socket *s) { struct resource *res; int i, done = 0; if (!s->cb_dev || !s->cb_dev->bus) return -ENODEV; #if defined(CONFIG_X86) /* If this is the root bus, the risk of hitting * some strange system devices which aren't protected * by either ACPI resource tables or properly requested * resources is too big. Therefore, don't do auto-adding * of resources at the moment. */ if (s->cb_dev->bus->number == 0) return -EINVAL; #endif for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) { res = s->cb_dev->bus->resource[i]; if (!res) continue; if (res->flags & IORESOURCE_IO) { if (res == &ioport_resource) continue; dev_printk(KERN_INFO, &s->cb_dev->dev, "pcmcia: parent PCI bridge I/O " "window: 0x%llx - 0x%llx\n", (unsigned long long)res->start, (unsigned long long)res->end); if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end)) done |= IORESOURCE_IO; } if (res->flags & IORESOURCE_MEM) { if (res == &iomem_resource) continue; dev_printk(KERN_INFO, &s->cb_dev->dev, "pcmcia: parent PCI bridge Memory " "window: 0x%llx - 0x%llx\n", (unsigned long long)res->start, (unsigned long long)res->end); if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end)) done |= IORESOURCE_MEM; } } /* if we got at least one of IO, and one of MEM, we can be glad and * activate the PCMCIA subsystem */ if (done == (IORESOURCE_MEM | IORESOURCE_IO)) s->resource_setup_done = 1; return 0; } #else static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s) { return -ENODEV; } #endif static int nonstatic_init(struct pcmcia_socket *s) { struct socket_data *data; data = kzalloc(sizeof(struct socket_data), GFP_KERNEL); if (!data) return -ENOMEM; data->mem_db.next = &data->mem_db; data->io_db.next = &data->io_db; s->resource_data = (void *) data; nonstatic_autoadd_resources(s); return 0; } static void nonstatic_release_resource_db(struct pcmcia_socket *s) { struct socket_data *data = s->resource_data; struct resource_map *p, *q; mutex_lock(&rsrc_mutex); for (p = data->mem_db.next; p != &data->mem_db; p = q) { q = p->next; kfree(p); } for (p = data->io_db.next; p != &data->io_db; p = q) { q = p->next; kfree(p); } mutex_unlock(&rsrc_mutex); } struct pccard_resource_ops pccard_nonstatic_ops = { .validate_mem = pcmcia_nonstatic_validate_mem, .adjust_io_region = nonstatic_adjust_io_region, .find_io = nonstatic_find_io_region, .find_mem = nonstatic_find_mem_region, .add_io = adjust_io, .add_mem = adjust_memory, .init = nonstatic_init, .exit = nonstatic_release_resource_db, }; EXPORT_SYMBOL(pccard_nonstatic_ops); /* sysfs interface to the resource database */ static ssize_t show_io_db(struct device *dev, struct device_attribute *attr, char *buf) { struct pcmcia_socket *s = dev_get_drvdata(dev); struct socket_data *data; struct resource_map *p; ssize_t ret = 0; mutex_lock(&rsrc_mutex); data = s->resource_data; for (p = data->io_db.next; p != &data->io_db; p = p->next) { if (ret > (PAGE_SIZE - 10)) continue; ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), "0x%08lx - 0x%08lx\n", ((unsigned long) p->base), ((unsigned long) p->base + p->num - 1)); } mutex_unlock(&rsrc_mutex); return ret; } static ssize_t store_io_db(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct pcmcia_socket *s = dev_get_drvdata(dev); unsigned long start_addr, end_addr; unsigned int add = ADD_MANAGED_RESOURCE; ssize_t ret = 0; ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); if (ret != 2) { ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); add = REMOVE_MANAGED_RESOURCE; if (ret != 2) { ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr, &end_addr); add = ADD_MANAGED_RESOURCE; if (ret != 2) return -EINVAL; } } if (end_addr < start_addr) return -EINVAL; ret = adjust_io(s, add, start_addr, end_addr); if (!ret) s->resource_setup_new = 1; return ret ? ret : count; } static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db); static ssize_t show_mem_db(struct device *dev, struct device_attribute *attr, char *buf) { struct pcmcia_socket *s = dev_get_drvdata(dev); struct socket_data *data; struct resource_map *p; ssize_t ret = 0; mutex_lock(&rsrc_mutex); data = s->resource_data; for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { if (ret > (PAGE_SIZE - 10)) continue; ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), "0x%08lx - 0x%08lx\n", ((unsigned long) p->base), ((unsigned long) p->base + p->num - 1)); } mutex_unlock(&rsrc_mutex); return ret; } static ssize_t store_mem_db(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct pcmcia_socket *s = dev_get_drvdata(dev); unsigned long start_addr, end_addr; unsigned int add = ADD_MANAGED_RESOURCE; ssize_t ret = 0; ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); if (ret != 2) { ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); add = REMOVE_MANAGED_RESOURCE; if (ret != 2) { ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr, &end_addr); add = ADD_MANAGED_RESOURCE; if (ret != 2) return -EINVAL; } } if (end_addr < start_addr) return -EINVAL; ret = adjust_memory(s, add, start_addr, end_addr); if (!ret) s->resource_setup_new = 1; return ret ? ret : count; } static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db); static struct attribute *pccard_rsrc_attributes[] = { &dev_attr_available_resources_io.attr, &dev_attr_available_resources_mem.attr, NULL, }; static const struct attribute_group rsrc_attributes = { .attrs = pccard_rsrc_attributes, }; static int __devinit pccard_sysfs_add_rsrc(struct device *dev, struct class_interface *class_intf) { struct pcmcia_socket *s = dev_get_drvdata(dev); if (s->resource_ops != &pccard_nonstatic_ops) return 0; return sysfs_create_group(&dev->kobj, &rsrc_attributes); } static void __devexit pccard_sysfs_remove_rsrc(struct device *dev, struct class_interface *class_intf) { struct pcmcia_socket *s = dev_get_drvdata(dev); if (s->resource_ops != &pccard_nonstatic_ops) return; sysfs_remove_group(&dev->kobj, &rsrc_attributes); } static struct class_interface pccard_rsrc_interface __refdata = { .class = &pcmcia_socket_class, .add_dev = &pccard_sysfs_add_rsrc, .remove_dev = __devexit_p(&pccard_sysfs_remove_rsrc), }; static int __init nonstatic_sysfs_init(void) { return class_interface_register(&pccard_rsrc_interface); } static void __exit nonstatic_sysfs_exit(void) { class_interface_unregister(&pccard_rsrc_interface); } module_init(nonstatic_sysfs_init); module_exit(nonstatic_sysfs_exit); /a> 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 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/*
    w83627hf.c - Part of lm_sensors, Linux kernel modules for hardware
                monitoring
    Copyright (c) 1998 - 2003  Frodo Looijaard <frodol@dds.nl>,
    Philip Edelbrock <phil@netroedge.com>,
    and Mark Studebaker <mdsxyz123@yahoo.com>
    Ported to 2.6 by Bernhard C. Schrenk <clemy@clemy.org>
    Copyright (c) 2007  Jean Delvare <khali@linux-fr.org>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

/*
    Supports following chips:

    Chip	#vin	#fanin	#pwm	#temp	wchipid	vendid	i2c	ISA
    w83627hf	9	3	2	3	0x20	0x5ca3	no	yes(LPC)
    w83627thf	7	3	3	3	0x90	0x5ca3	no	yes(LPC)
    w83637hf	7	3	3	3	0x80	0x5ca3	no	yes(LPC)
    w83687thf	7	3	3	3	0x90	0x5ca3	no	yes(LPC)
    w83697hf	8	2	2	2	0x60	0x5ca3	no	yes(LPC)

    For other winbond chips, and for i2c support in the above chips,
    use w83781d.c.

    Note: automatic ("cruise") fan control for 697, 637 & 627thf not
    supported yet.
*/

#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/platform_device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/ioport.h>
#include <asm/io.h>
#include "lm75.h"

static struct platform_device *pdev;

#define DRVNAME "w83627hf"
enum chips { w83627hf, w83627thf, w83697hf, w83637hf, w83687thf };

static u16 force_addr;
module_param(force_addr, ushort, 0);
MODULE_PARM_DESC(force_addr,
		 "Initialize the base address of the sensors");
static u8 force_i2c = 0x1f;
module_param(force_i2c, byte, 0);
MODULE_PARM_DESC(force_i2c,
		 "Initialize the i2c address of the sensors");

static int reset;
module_param(reset, bool, 0);
MODULE_PARM_DESC(reset, "Set to one to reset chip on load");

static int init = 1;
module_param(init, bool, 0);
MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");

/* modified from kernel/include/traps.c */
static int REG;		/* The register to read/write */
#define	DEV	0x07	/* Register: Logical device select */
static int VAL;		/* The value to read/write */

/* logical device numbers for superio_select (below) */
#define W83627HF_LD_FDC		0x00
#define W83627HF_LD_PRT		0x01
#define W83627HF_LD_UART1	0x02
#define W83627HF_LD_UART2	0x03
#define W83627HF_LD_KBC		0x05
#define W83627HF_LD_CIR		0x06 /* w83627hf only */
#define W83627HF_LD_GAME	0x07
#define W83627HF_LD_MIDI	0x07
#define W83627HF_LD_GPIO1	0x07
#define W83627HF_LD_GPIO5	0x07 /* w83627thf only */
#define W83627HF_LD_GPIO2	0x08
#define W83627HF_LD_GPIO3	0x09
#define W83627HF_LD_GPIO4	0x09 /* w83627thf only */
#define W83627HF_LD_ACPI	0x0a
#define W83627HF_LD_HWM		0x0b

#define	DEVID	0x20	/* Register: Device ID */

#define W83627THF_GPIO5_EN	0x30 /* w83627thf only */
#define W83627THF_GPIO5_IOSR	0xf3 /* w83627thf only */
#define W83627THF_GPIO5_DR	0xf4 /* w83627thf only */

#define W83687THF_VID_EN	0x29 /* w83687thf only */
#define W83687THF_VID_CFG	0xF0 /* w83687thf only */
#define W83687THF_VID_DATA	0xF1 /* w83687thf only */

static inline void
superio_outb(int reg, int val)
{
	outb(reg, REG);
	outb(val, VAL);
}

static inline int
superio_inb(int reg)
{
	outb(reg, REG);
	return inb(VAL);
}

static inline void
superio_select(int ld)
{
	outb(DEV, REG);
	outb(ld, VAL);
}

static inline void
superio_enter(void)
{
	outb(0x87, REG);
	outb(0x87, REG);
}

static inline void
superio_exit(void)
{
	outb(0xAA, REG);
}

#define W627_DEVID 0x52
#define W627THF_DEVID 0x82
#define W697_DEVID 0x60
#define W637_DEVID 0x70
#define W687THF_DEVID 0x85
#define WINB_ACT_REG 0x30
#define WINB_BASE_REG 0x60
/* Constants specified below */

/* Alignment of the base address */
#define WINB_ALIGNMENT		~7

/* Offset & size of I/O region we are interested in */
#define WINB_REGION_OFFSET	5
#define WINB_REGION_SIZE	2

/* Where are the sensors address/data registers relative to the region offset */
#define W83781D_ADDR_REG_OFFSET 0
#define W83781D_DATA_REG_OFFSET 1

/* The W83781D registers */
/* The W83782D registers for nr=7,8 are in bank 5 */
#define W83781D_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
					   (0x554 + (((nr) - 7) * 2)))
#define W83781D_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
					   (0x555 + (((nr) - 7) * 2)))
#define W83781D_REG_IN(nr)     ((nr < 7) ? (0x20 + (nr)) : \
					   (0x550 + (nr) - 7))

#define W83781D_REG_FAN_MIN(nr) (0x3a + (nr))
#define W83781D_REG_FAN(nr) (0x27 + (nr))

#define W83781D_REG_TEMP2_CONFIG 0x152
#define W83781D_REG_TEMP3_CONFIG 0x252
#define W83781D_REG_TEMP(nr)		((nr == 3) ? (0x0250) : \
					((nr == 2) ? (0x0150) : \
					             (0x27)))
#define W83781D_REG_TEMP_HYST(nr)	((nr == 3) ? (0x253) : \
					((nr == 2) ? (0x153) : \
					             (0x3A)))
#define W83781D_REG_TEMP_OVER(nr)	((nr == 3) ? (0x255) : \
					((nr == 2) ? (0x155) : \
					             (0x39)))

#define W83781D_REG_BANK 0x4E

#define W83781D_REG_CONFIG 0x40
#define W83781D_REG_ALARM1 0x459
#define W83781D_REG_ALARM2 0x45A
#define W83781D_REG_ALARM3 0x45B

#define W83781D_REG_BEEP_CONFIG 0x4D
#define W83781D_REG_BEEP_INTS1 0x56
#define W83781D_REG_BEEP_INTS2 0x57
#define W83781D_REG_BEEP_INTS3 0x453

#define W83781D_REG_VID_FANDIV 0x47

#define W83781D_REG_CHIPID 0x49
#define W83781D_REG_WCHIPID 0x58
#define W83781D_REG_CHIPMAN 0x4F
#define W83781D_REG_PIN 0x4B

#define W83781D_REG_VBAT 0x5D

#define W83627HF_REG_PWM1 0x5A
#define W83627HF_REG_PWM2 0x5B

#define W83627THF_REG_PWM1		0x01	/* 697HF/637HF/687THF too */
#define W83627THF_REG_PWM2		0x03	/* 697HF/637HF/687THF too */
#define W83627THF_REG_PWM3		0x11	/* 637HF/687THF too */

#define W83627THF_REG_VRM_OVT_CFG 	0x18	/* 637HF/687THF too */

static const u8 regpwm_627hf[] = { W83627HF_REG_PWM1, W83627HF_REG_PWM2 };
static const u8 regpwm[] = { W83627THF_REG_PWM1, W83627THF_REG_PWM2,
                             W83627THF_REG_PWM3 };
#define W836X7HF_REG_PWM(type, nr) (((type) == w83627hf) ? \
				    regpwm_627hf[nr] : regpwm[nr])

#define W83627HF_REG_PWM_FREQ		0x5C	/* Only for the 627HF */

#define W83637HF_REG_PWM_FREQ1		0x00	/* 697HF/687THF too */
#define W83637HF_REG_PWM_FREQ2		0x02	/* 697HF/687THF too */
#define W83637HF_REG_PWM_FREQ3		0x10	/* 687THF too */

static const u8 W83637HF_REG_PWM_FREQ[] = { W83637HF_REG_PWM_FREQ1,
					W83637HF_REG_PWM_FREQ2,
					W83637HF_REG_PWM_FREQ3 };

#define W83627HF_BASE_PWM_FREQ	46870

#define W83781D_REG_I2C_ADDR 0x48
#define W83781D_REG_I2C_SUBADDR 0x4A

/* Sensor selection */
#define W83781D_REG_SCFG1 0x5D
static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 };
#define W83781D_REG_SCFG2 0x59
static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 };
#define W83781D_DEFAULT_BETA 3435

/* Conversions. Limit checking is only done on the TO_REG
   variants. Note that you should be a bit careful with which arguments
   these macros are called: arguments may be evaluated more than once.
   Fixing this is just not worth it. */
#define IN_TO_REG(val)  (SENSORS_LIMIT((((val) + 8)/16),0,255))
#define IN_FROM_REG(val) ((val) * 16)

static inline u8 FAN_TO_REG(long rpm, int div)
{
	if (rpm == 0)
		return 255;
	rpm = SENSORS_LIMIT(rpm, 1, 1000000);
	return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
			     254);
}

#define TEMP_MIN (-128000)
#define TEMP_MAX ( 127000)

/* TEMP: 0.001C/bit (-128C to +127C)
   REG: 1C/bit, two's complement */
static u8 TEMP_TO_REG(long temp)
{
        int ntemp = SENSORS_LIMIT(temp, TEMP_MIN, TEMP_MAX);
        ntemp += (ntemp<0 ? -500 : 500);
        return (u8)(ntemp / 1000);
}

static int TEMP_FROM_REG(u8 reg)
{
        return (s8)reg * 1000;
}

#define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div)))

#define PWM_TO_REG(val) (SENSORS_LIMIT((val),0,255))

static inline unsigned long pwm_freq_from_reg_627hf(u8 reg)
{
	unsigned long freq;
	freq = W83627HF_BASE_PWM_FREQ >> reg;
	return freq;
}
static inline u8 pwm_freq_to_reg_627hf(unsigned long val)
{
	u8 i;
	/* Only 5 dividers (1 2 4 8 16)
	   Search for the nearest available frequency */
	for (i = 0; i < 4; i++) {
		if (val > (((W83627HF_BASE_PWM_FREQ >> i) +
			    (W83627HF_BASE_PWM_FREQ >> (i+1))) / 2))
			break;
	}
	return i;
}

static inline unsigned long pwm_freq_from_reg(u8 reg)
{
	/* Clock bit 8 -> 180 kHz or 24 MHz */
	unsigned long clock = (reg & 0x80) ? 180000UL : 24000000UL;

	reg &= 0x7f;
	/* This should not happen but anyway... */
	if (reg == 0)
		reg++;
	return (clock / (reg << 8));
}
static inline u8 pwm_freq_to_reg(unsigned long val)
{
	/* Minimum divider value is 0x01 and maximum is 0x7F */
	if (val >= 93750)	/* The highest we can do */
		return 0x01;
	if (val >= 720)	/* Use 24 MHz clock */
		return (24000000UL / (val << 8));
	if (val < 6)		/* The lowest we can do */
		return 0xFF;
	else			/* Use 180 kHz clock */
		return (0x80 | (180000UL / (val << 8)));
}

#define BEEP_MASK_FROM_REG(val)		 (val)
#define BEEP_MASK_TO_REG(val)		((val) & 0xffffff)
#define BEEP_ENABLE_TO_REG(val)		((val)?1:0)
#define BEEP_ENABLE_FROM_REG(val)	((val)?1:0)

#define DIV_FROM_REG(val) (1 << (val))

static inline u8 DIV_TO_REG(long val)
{
	int i;
	val = SENSORS_LIMIT(val, 1, 128) >> 1;
	for (i = 0; i < 7; i++) {
		if (val == 0)
			break;
		val >>= 1;
	}
	return ((u8) i);
}

/* For each registered chip, we need to keep some data in memory.
   The structure is dynamically allocated. */
struct w83627hf_data {
	unsigned short addr;
	const char *name;
	struct device *hwmon_dev;
	struct mutex lock;
	enum chips type;

	struct mutex update_lock;
	char valid;		/* !=0 if following fields are valid */
	unsigned long last_updated;	/* In jiffies */

	u8 in[9];		/* Register value */
	u8 in_max[9];		/* Register value */
	u8 in_min[9];		/* Register value */
	u8 fan[3];		/* Register value */
	u8 fan_min[3];		/* Register value */
	u8 temp;
	u8 temp_max;		/* Register value */
	u8 temp_max_hyst;	/* Register value */
	u16 temp_add[2];	/* Register value */
	u16 temp_max_add[2];	/* Register value */
	u16 temp_max_hyst_add[2]; /* Register value */
	u8 fan_div[3];		/* Register encoding, shifted right */
	u8 vid;			/* Register encoding, combined */
	u32 alarms;		/* Register encoding, combined */
	u32 beep_mask;		/* Register encoding, combined */
	u8 beep_enable;		/* Boolean */
	u8 pwm[3];		/* Register value */
	u8 pwm_freq[3];		/* Register value */
	u16 sens[3];		/* 1 = pentium diode; 2 = 3904 diode;
				   4 = thermistor */
	u8 vrm;
	u8 vrm_ovt;		/* Register value, 627THF/637HF/687THF only */
};

struct w83627hf_sio_data {
	enum chips type;
};


static int w83627hf_probe(struct platform_device *pdev);
static int __devexit w83627hf_remove(struct platform_device *pdev);

static int w83627hf_read_value(struct w83627hf_data *data, u16 reg);
static int w83627hf_write_value(struct w83627hf_data *data, u16 reg, u16 value);
static struct w83627hf_data *w83627hf_update_device(struct device *dev);
static void w83627hf_init_device(struct platform_device *pdev);

static struct platform_driver w83627hf_driver = {
	.driver = {
		.owner	= THIS_MODULE,
		.name	= DRVNAME,
	},
	.probe		= w83627hf_probe,
	.remove		= __devexit_p(w83627hf_remove),
};

static ssize_t
show_in_input(struct device *dev, struct device_attribute *devattr, char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return sprintf(buf, "%ld\n", (long)IN_FROM_REG(data->in[nr]));
}
static ssize_t
show_in_min(struct device *dev, struct device_attribute *devattr, char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return sprintf(buf, "%ld\n", (long)IN_FROM_REG(data->in_min[nr]));
}
static ssize_t
show_in_max(struct device *dev, struct device_attribute *devattr, char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return sprintf(buf, "%ld\n", (long)IN_FROM_REG(data->in_max[nr]));
}
static ssize_t
store_in_min(struct device *dev, struct device_attribute *devattr,
	     const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = dev_get_drvdata(dev);
	long val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->in_min[nr] = IN_TO_REG(val);
	w83627hf_write_value(data, W83781D_REG_IN_MIN(nr), data->in_min[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}
static ssize_t
store_in_max(struct device *dev, struct device_attribute *devattr,
	     const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = dev_get_drvdata(dev);
	long val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->in_max[nr] = IN_TO_REG(val);
	w83627hf_write_value(data, W83781D_REG_IN_MAX(nr), data->in_max[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}
#define sysfs_vin_decl(offset) \
static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO,		\
			  show_in_input, NULL, offset);		\
static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO|S_IWUSR,	\
			  show_in_min, store_in_min, offset);	\
static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO|S_IWUSR,	\
			  show_in_max, store_in_max, offset);

sysfs_vin_decl(1);
sysfs_vin_decl(2);
sysfs_vin_decl(3);
sysfs_vin_decl(4);
sysfs_vin_decl(5);
sysfs_vin_decl(6);
sysfs_vin_decl(7);
sysfs_vin_decl(8);

/* use a different set of functions for in0 */
static ssize_t show_in_0(struct w83627hf_data *data, char *buf, u8 reg)
{
	long in0;

	if ((data->vrm_ovt & 0x01) &&
		(w83627thf == data->type || w83637hf == data->type
		 || w83687thf == data->type))

		/* use VRM9 calculation */
		in0 = (long)((reg * 488 + 70000 + 50) / 100);
	else
		/* use VRM8 (standard) calculation */
		in0 = (long)IN_FROM_REG(reg);

	return sprintf(buf,"%ld\n", in0);
}

static ssize_t show_regs_in_0(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return show_in_0(data, buf, data->in[0]);
}

static ssize_t show_regs_in_min0(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return show_in_0(data, buf, data->in_min[0]);
}

static ssize_t show_regs_in_max0(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return show_in_0(data, buf, data->in_max[0]);
}

static ssize_t store_regs_in_min0(struct device *dev, struct device_attribute *attr,
	const char *buf, size_t count)
{
	struct w83627hf_data *data = dev_get_drvdata(dev);
	u32 val;

	val = simple_strtoul(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	
	if ((data->vrm_ovt & 0x01) &&
		(w83627thf == data->type || w83637hf == data->type
		 || w83687thf == data->type))

		/* use VRM9 calculation */
		data->in_min[0] =
			SENSORS_LIMIT(((val * 100) - 70000 + 244) / 488, 0,
					255);
	else
		/* use VRM8 (standard) calculation */
		data->in_min[0] = IN_TO_REG(val);

	w83627hf_write_value(data, W83781D_REG_IN_MIN(0), data->in_min[0]);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t store_regs_in_max0(struct device *dev, struct device_attribute *attr,
	const char *buf, size_t count)
{
	struct w83627hf_data *data = dev_get_drvdata(dev);
	u32 val;

	val = simple_strtoul(buf, NULL, 10);

	mutex_lock(&data->update_lock);

	if ((data->vrm_ovt & 0x01) &&
		(w83627thf == data->type || w83637hf == data->type
		 || w83687thf == data->type))
		
		/* use VRM9 calculation */
		data->in_max[0] =
			SENSORS_LIMIT(((val * 100) - 70000 + 244) / 488, 0,
					255);
	else
		/* use VRM8 (standard) calculation */
		data->in_max[0] = IN_TO_REG(val);

	w83627hf_write_value(data, W83781D_REG_IN_MAX(0), data->in_max[0]);
	mutex_unlock(&data->update_lock);
	return count;
}

static DEVICE_ATTR(in0_input, S_IRUGO, show_regs_in_0, NULL);
static DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR,
	show_regs_in_min0, store_regs_in_min0);
static DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR,
	show_regs_in_max0, store_regs_in_max0);

static ssize_t
show_fan_input(struct device *dev, struct device_attribute *devattr, char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return sprintf(buf, "%ld\n", FAN_FROM_REG(data->fan[nr],
				(long)DIV_FROM_REG(data->fan_div[nr])));
}
static ssize_t
show_fan_min(struct device *dev, struct device_attribute *devattr, char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return sprintf(buf, "%ld\n", FAN_FROM_REG(data->fan_min[nr],
				(long)DIV_FROM_REG(data->fan_div[nr])));
}
static ssize_t
store_fan_min(struct device *dev, struct device_attribute *devattr,
	      const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = dev_get_drvdata(dev);
	u32 val = simple_strtoul(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
	w83627hf_write_value(data, W83781D_REG_FAN_MIN(nr+1),
			     data->fan_min[nr]);

	mutex_unlock(&data->update_lock);
	return count;
}
#define sysfs_fan_decl(offset)	\
static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO,			\
			  show_fan_input, NULL, offset - 1);		\
static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,		\
			  show_fan_min, store_fan_min, offset - 1);

sysfs_fan_decl(1);
sysfs_fan_decl(2);
sysfs_fan_decl(3);

static ssize_t
show_temp(struct device *dev, struct device_attribute *devattr, char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	if (nr >= 2) {	/* TEMP2 and TEMP3 */
		return sprintf(buf, "%ld\n",
			(long)LM75_TEMP_FROM_REG(data->temp_add[nr-2]));
	} else {	/* TEMP1 */
		return sprintf(buf, "%ld\n", (long)TEMP_FROM_REG(data->temp));
	}
}

static ssize_t
show_temp_max(struct device *dev, struct device_attribute *devattr,
	      char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	if (nr >= 2) {	/* TEMP2 and TEMP3 */
		return sprintf(buf, "%ld\n",
			(long)LM75_TEMP_FROM_REG(data->temp_max_add[nr-2]));
	} else {	/* TEMP1 */
		return sprintf(buf, "%ld\n",
			(long)TEMP_FROM_REG(data->temp_max));
	}
}

static ssize_t
show_temp_max_hyst(struct device *dev, struct device_attribute *devattr,
		   char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	if (nr >= 2) {	/* TEMP2 and TEMP3 */
		return sprintf(buf, "%ld\n",
			(long)LM75_TEMP_FROM_REG(data->temp_max_hyst_add[nr-2]));
	} else {	/* TEMP1 */
		return sprintf(buf, "%ld\n",
			(long)TEMP_FROM_REG(data->temp_max_hyst));
	}
}

static ssize_t
store_temp_max(struct device *dev, struct device_attribute *devattr,
	       const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = dev_get_drvdata(dev);
	long val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);

	if (nr >= 2) {	/* TEMP2 and TEMP3 */
		data->temp_max_add[nr-2] = LM75_TEMP_TO_REG(val);
		w83627hf_write_value(data, W83781D_REG_TEMP_OVER(nr),
				data->temp_max_add[nr-2]);
	} else {	/* TEMP1 */
		data->temp_max = TEMP_TO_REG(val);
		w83627hf_write_value(data, W83781D_REG_TEMP_OVER(nr),
			data->temp_max);
	}
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t
store_temp_max_hyst(struct device *dev, struct device_attribute *devattr,
		    const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = dev_get_drvdata(dev);
	long val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);

	if (nr >= 2) {	/* TEMP2 and TEMP3 */
		data->temp_max_hyst_add[nr-2] = LM75_TEMP_TO_REG(val);
		w83627hf_write_value(data, W83781D_REG_TEMP_HYST(nr),
				data->temp_max_hyst_add[nr-2]);
	} else {	/* TEMP1 */
		data->temp_max_hyst = TEMP_TO_REG(val);
		w83627hf_write_value(data, W83781D_REG_TEMP_HYST(nr),
			data->temp_max_hyst);
	}
	mutex_unlock(&data->update_lock);
	return count;
}

#define sysfs_temp_decl(offset) \
static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO,		\
			  show_temp, NULL, offset);			\
static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO|S_IWUSR,	 	\
			  show_temp_max, store_temp_max, offset);	\
static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO|S_IWUSR,	\
			  show_temp_max_hyst, store_temp_max_hyst, offset);

sysfs_temp_decl(1);
sysfs_temp_decl(2);
sysfs_temp_decl(3);

static ssize_t
show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
}
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);

static ssize_t
show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct w83627hf_data *data = dev_get_drvdata(dev);
	return sprintf(buf, "%ld\n", (long) data->vrm);
}
static ssize_t
store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct w83627hf_data *data = dev_get_drvdata(dev);
	u32 val;

	val = simple_strtoul(buf, NULL, 10);
	data->vrm = val;

	return count;
}
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);

static ssize_t
show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return sprintf(buf, "%ld\n", (long) data->alarms);
}
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);

#define show_beep_reg(REG, reg) \
static ssize_t show_beep_##reg (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
	struct w83627hf_data *data = w83627hf_update_device(dev); \
	return sprintf(buf,"%ld\n", \
		      (long)BEEP_##REG##_FROM_REG(data->beep_##reg)); \
}
show_beep_reg(ENABLE, enable)
show_beep_reg(MASK, mask)

#define BEEP_ENABLE			0	/* Store beep_enable */
#define BEEP_MASK			1	/* Store beep_mask */

static ssize_t
store_beep_reg(struct device *dev, const char *buf, size_t count,
	       int update_mask)
{
	struct w83627hf_data *data = dev_get_drvdata(dev);
	u32 val, val2;

	val = simple_strtoul(buf, NULL, 10);

	mutex_lock(&data->update_lock);

	if (update_mask == BEEP_MASK) {	/* We are storing beep_mask */
		data->beep_mask = BEEP_MASK_TO_REG(val);
		w83627hf_write_value(data, W83781D_REG_BEEP_INTS1,
				    data->beep_mask & 0xff);
		w83627hf_write_value(data, W83781D_REG_BEEP_INTS3,
				    ((data->beep_mask) >> 16) & 0xff);
		val2 = (data->beep_mask >> 8) & 0x7f;
	} else {		/* We are storing beep_enable */
		val2 =
		    w83627hf_read_value(data, W83781D_REG_BEEP_INTS2) & 0x7f;
		data->beep_enable = BEEP_ENABLE_TO_REG(val);
	}

	w83627hf_write_value(data, W83781D_REG_BEEP_INTS2,
			    val2 | data->beep_enable << 7);

	mutex_unlock(&data->update_lock);
	return count;
}

#define sysfs_beep(REG, reg) \
static ssize_t show_regs_beep_##reg (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
	return show_beep_##reg(dev, attr, buf); \
} \
static ssize_t \
store_regs_beep_##reg (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
{ \
	return store_beep_reg(dev, buf, count, BEEP_##REG); \
} \
static DEVICE_ATTR(beep_##reg, S_IRUGO | S_IWUSR, \
		  show_regs_beep_##reg, store_regs_beep_##reg);

sysfs_beep(ENABLE, enable);
sysfs_beep(MASK, mask);

static ssize_t
show_fan_div(struct device *dev, struct device_attribute *devattr, char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return sprintf(buf, "%ld\n",
		       (long) DIV_FROM_REG(data->fan_div[nr]));
}
/* Note: we save and restore the fan minimum here, because its value is
   determined in part by the fan divisor.  This follows the principle of
   least surprise; the user doesn't expect the fan minimum to change just
   because the divisor changed. */
static ssize_t
store_fan_div(struct device *dev, struct device_attribute *devattr,
	      const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = dev_get_drvdata(dev);
	unsigned long min;
	u8 reg;
	unsigned long val = simple_strtoul(buf, NULL, 10);

	mutex_lock(&data->update_lock);

	/* Save fan_min */
	min = FAN_FROM_REG(data->fan_min[nr],
			   DIV_FROM_REG(data->fan_div[nr]));

	data->fan_div[nr] = DIV_TO_REG(val);

	reg = (w83627hf_read_value(data, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV)
	       & (nr==0 ? 0xcf : 0x3f))
	    | ((data->fan_div[nr] & 0x03) << (nr==0 ? 4 : 6));
	w83627hf_write_value(data, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg);

	reg = (w83627hf_read_value(data, W83781D_REG_VBAT)
	       & ~(1 << (5 + nr)))
	    | ((data->fan_div[nr] & 0x04) << (3 + nr));
	w83627hf_write_value(data, W83781D_REG_VBAT, reg);

	/* Restore fan_min */
	data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
	w83627hf_write_value(data, W83781D_REG_FAN_MIN(nr+1), data->fan_min[nr]);

	mutex_unlock(&data->update_lock);
	return count;
}

static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO|S_IWUSR,
			  show_fan_div, store_fan_div, 0);
static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO|S_IWUSR,
			  show_fan_div, store_fan_div, 1);
static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO|S_IWUSR,
			  show_fan_div, store_fan_div, 2);

static ssize_t
show_pwm(struct device *dev, struct device_attribute *devattr, char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return sprintf(buf, "%ld\n", (long) data->pwm[nr]);
}

static ssize_t
store_pwm(struct device *dev, struct device_attribute *devattr,
	  const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = dev_get_drvdata(dev);
	u32 val = simple_strtoul(buf, NULL, 10);

	mutex_lock(&data->update_lock);

	if (data->type == w83627thf) {
		/* bits 0-3 are reserved  in 627THF */
		data->pwm[nr] = PWM_TO_REG(val) & 0xf0;
		w83627hf_write_value(data,
				     W836X7HF_REG_PWM(data->type, nr),
				     data->pwm[nr] |
				     (w83627hf_read_value(data,
				     W836X7HF_REG_PWM(data->type, nr)) & 0x0f));
	} else {
		data->pwm[nr] = PWM_TO_REG(val);
		w83627hf_write_value(data,
				     W836X7HF_REG_PWM(data->type, nr),
				     data->pwm[nr]);
	}

	mutex_unlock(&data->update_lock);
	return count;
}

static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR, show_pwm, store_pwm, 0);
static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO|S_IWUSR, show_pwm, store_pwm, 1);
static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO|S_IWUSR, show_pwm, store_pwm, 2);

static ssize_t
show_pwm_freq(struct device *dev, struct device_attribute *devattr, char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	if (data->type == w83627hf)
		return sprintf(buf, "%ld\n",
			pwm_freq_from_reg_627hf(data->pwm_freq[nr]));
	else
		return sprintf(buf, "%ld\n",
			pwm_freq_from_reg(data->pwm_freq[nr]));
}

static ssize_t
store_pwm_freq(struct device *dev, struct device_attribute *devattr,
	       const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = dev_get_drvdata(dev);
	static const u8 mask[]={0xF8, 0x8F};
	u32 val;

	val = simple_strtoul(buf, NULL, 10);

	mutex_lock(&data->update_lock);

	if (data->type == w83627hf) {
		data->pwm_freq[nr] = pwm_freq_to_reg_627hf(val);
		w83627hf_write_value(data, W83627HF_REG_PWM_FREQ,
				(data->pwm_freq[nr] << (nr*4)) |
				(w83627hf_read_value(data,
				W83627HF_REG_PWM_FREQ) & mask[nr]));
	} else {
		data->pwm_freq[nr] = pwm_freq_to_reg(val);
		w83627hf_write_value(data, W83637HF_REG_PWM_FREQ[nr],
				data->pwm_freq[nr]);
	}

	mutex_unlock(&data->update_lock);
	return count;
}

static SENSOR_DEVICE_ATTR(pwm1_freq, S_IRUGO|S_IWUSR,
			  show_pwm_freq, store_pwm_freq, 0);
static SENSOR_DEVICE_ATTR(pwm2_freq, S_IRUGO|S_IWUSR,
			  show_pwm_freq, store_pwm_freq, 1);
static SENSOR_DEVICE_ATTR(pwm3_freq, S_IRUGO|S_IWUSR,
			  show_pwm_freq, store_pwm_freq, 2);

static ssize_t
show_temp_type(struct device *dev, struct device_attribute *devattr,
	       char *buf)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = w83627hf_update_device(dev);
	return sprintf(buf, "%ld\n", (long) data->sens[nr]);
}

static ssize_t
store_temp_type(struct device *dev, struct device_attribute *devattr,
		const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(devattr)->index;
	struct w83627hf_data *data = dev_get_drvdata(dev);
	u32 val, tmp;

	val = simple_strtoul(buf, NULL, 10);

	mutex_lock(&data->update_lock);

	switch (val) {
	case 1:		/* PII/Celeron diode */
		tmp = w83627hf_read_value(data, W83781D_REG_SCFG1);
		w83627hf_write_value(data, W83781D_REG_SCFG1,
				    tmp | BIT_SCFG1[nr]);
		tmp = w83627hf_read_value(data, W83781D_REG_SCFG2);
		w83627hf_write_value(data, W83781D_REG_SCFG2,
				    tmp | BIT_SCFG2[nr]);
		data->sens[nr] = val;
		break;
	case 2:		/* 3904 */
		tmp = w83627hf_read_value(data, W83781D_REG_SCFG1);
		w83627hf_write_value(data, W83781D_REG_SCFG1,
				    tmp | BIT_SCFG1[nr]);
		tmp = w83627hf_read_value(data, W83781D_REG_SCFG2);
		w83627hf_write_value(data, W83781D_REG_SCFG2,
				    tmp & ~BIT_SCFG2[nr]);
		data->sens[nr] = val;
		break;
	case W83781D_DEFAULT_BETA:
		dev_warn(dev, "Sensor type %d is deprecated, please use 4 "
			 "instead\n", W83781D_DEFAULT_BETA);
		/* fall through */
	case 4:		/* thermistor */
		tmp = w83627hf_read_value(data, W83781D_REG_SCFG1);
		w83627hf_write_value(data, W83781D_REG_SCFG1,
				    tmp & ~BIT_SCFG1[nr]);
		data->sens[nr] = val;
		break;
	default:
		dev_err(dev,
		       "Invalid sensor type %ld; must be 1, 2, or 4\n",
		       (long) val);
		break;
	}

	mutex_unlock(&data->update_lock);
	return count;
}

#define sysfs_temp_type(offset) \
static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
			  show_temp_type, store_temp_type, offset - 1);

sysfs_temp_type(1);
sysfs_temp_type(2);
sysfs_temp_type(3);

static ssize_t
show_name(struct device *dev, struct device_attribute *devattr, char *buf)
{
	struct w83627hf_data *data = dev_get_drvdata(dev);

	return sprintf(buf, "%s\n", data->name);
}
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);

static int __init w83627hf_find(int sioaddr, unsigned short *addr,
				struct w83627hf_sio_data *sio_data)
{
	int err = -ENODEV;
	u16 val;

	static const __initdata char *names[] = {
		"W83627HF",
		"W83627THF",
		"W83697HF",
		"W83637HF",
		"W83687THF",
	};

	REG = sioaddr;
	VAL = sioaddr + 1;

	superio_enter();
	val= superio_inb(DEVID);
	switch (val) {
	case W627_DEVID:
		sio_data->type = w83627hf;
		break;
	case W627THF_DEVID:
		sio_data->type = w83627thf;
		break;
	case W697_DEVID:
		sio_data->type = w83697hf;
		break;
	case W637_DEVID:
		sio_data->type = w83637hf;
		break;
	case W687THF_DEVID:
		sio_data->type = w83687thf;
		break;
	case 0xff:	/* No device at all */
		goto exit;
	default:
		pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%02x)\n", val);
		goto exit;
	}

	superio_select(W83627HF_LD_HWM);
	force_addr &= WINB_ALIGNMENT;
	if (force_addr) {
		printk(KERN_WARNING DRVNAME ": Forcing address 0x%x\n",
		       force_addr);
		superio_outb(WINB_BASE_REG, force_addr >> 8);
		superio_outb(WINB_BASE_REG + 1, force_addr & 0xff);
	}
	val = (superio_inb(WINB_BASE_REG) << 8) |
	       superio_inb(WINB_BASE_REG + 1);
	*addr = val & WINB_ALIGNMENT;
	if (*addr == 0) {
		printk(KERN_WARNING DRVNAME ": Base address not set, "
		       "skipping\n");
		goto exit;
	}

	val = superio_inb(WINB_ACT_REG);
	if (!(val & 0x01)) {
		printk(KERN_WARNING DRVNAME ": Enabling HWM logical device\n");
		superio_outb(WINB_ACT_REG, val | 0x01);
	}