| /* |
| * $Id: pcmciamtd.c,v 1.36 2002/10/14 18:49:12 rmk Exp $ |
| * |
| * pcmciamtd.c - MTD driver for PCMCIA flash memory cards |
| * |
| * Author: Simon Evans <spse@secret.org.uk> |
| * |
| * Copyright (C) 2002 Simon Evans |
| * |
| * Licence: GPL |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <linux/timer.h> |
| #include <asm/io.h> |
| #include <asm/system.h> |
| |
| #include <pcmcia/version.h> |
| #include <pcmcia/cs_types.h> |
| #include <pcmcia/cs.h> |
| #include <pcmcia/cistpl.h> |
| #include <pcmcia/ds.h> |
| |
| #include <linux/mtd/map.h> |
| |
| #ifdef CONFIG_MTD_DEBUG |
| static int debug = CONFIG_MTD_DEBUG_VERBOSE; |
| MODULE_PARM(debug, "i"); |
| MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy"); |
| #undef DEBUG |
| #define DEBUG(n, format, arg...) \ |
| if (n <= debug) { \ |
| printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __FUNCTION__ , ## arg); \ |
| } |
| |
| #else |
| #undef DEBUG |
| #define DEBUG(n, arg...) |
| static const int debug = 0; |
| #endif |
| |
| #define err(format, arg...) printk(KERN_ERR __FILE__ ": " format "\n" , ## arg) |
| #define info(format, arg...) printk(KERN_INFO __FILE__ ": " format "\n" , ## arg) |
| #define warn(format, arg...) printk(KERN_WARNING __FILE__ ": " format "\n" , ## arg) |
| |
| |
| #define DRIVER_DESC "PCMCIA Flash memory card driver" |
| #define DRIVER_VERSION "$Revision: 1.36 $" |
| |
| /* Size of the PCMCIA address space: 26 bits = 64 MB */ |
| #define MAX_PCMCIA_ADDR 0x4000000 |
| |
| struct pcmciamtd_dev { |
| struct list_head list; |
| dev_link_t link; /* PCMCIA link */ |
| caddr_t win_base; /* ioremapped address of PCMCIA window */ |
| unsigned int win_size; /* size of window */ |
| unsigned int cardsize; /* size of whole card */ |
| unsigned int offset; /* offset into card the window currently points at */ |
| struct map_info pcmcia_map; |
| struct mtd_info *mtd_info; |
| u8 vpp; |
| char mtd_name[sizeof(struct cistpl_vers_1_t)]; |
| }; |
| |
| |
| static dev_info_t dev_info = "pcmciamtd"; |
| static LIST_HEAD(dev_list); |
| |
| /* Module parameters */ |
| |
| /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */ |
| static int buswidth = 2; |
| |
| /* Speed of memory accesses, in ns */ |
| static int mem_speed; |
| |
| /* Force the size of an SRAM card */ |
| static int force_size; |
| |
| /* Force Vpp */ |
| static int vpp; |
| |
| /* Set Vpp */ |
| static int setvpp; |
| |
| /* Force card to be treated as FLASH, ROM or RAM */ |
| static int mem_type; |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>"); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_PARM(buswidth, "i"); |
| MODULE_PARM_DESC(buswidth, "Set buswidth (1=8 bit, 2=16 bit, default=2)"); |
| MODULE_PARM(mem_speed, "i"); |
| MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns"); |
| MODULE_PARM(force_size, "i"); |
| MODULE_PARM_DESC(force_size, "Force size of card in MB (1-64)"); |
| MODULE_PARM(setvpp, "i"); |
| MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)"); |
| MODULE_PARM(vpp, "i"); |
| MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)"); |
| MODULE_PARM(mem_type, "i"); |
| MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)"); |
| |
| |
| |
| static inline void cs_error(client_handle_t handle, int func, int ret) |
| { |
| error_info_t err = { func, ret }; |
| CardServices(ReportError, handle, &err); |
| } |
| |
| |
| /* read/write{8,16} copy_{from,to} routines with window remapping to access whole card */ |
| |
| static caddr_t remap_window(struct map_info *map, unsigned long to) |
| { |
| struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; |
| window_handle_t win = (window_handle_t)map->map_priv_2; |
| memreq_t mrq; |
| int ret; |
| |
| mrq.CardOffset = to & ~(dev->win_size-1); |
| if(mrq.CardOffset != dev->offset) { |
| DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x", |
| dev->offset, mrq.CardOffset); |
| mrq.Page = 0; |
| if( (ret = CardServices(MapMemPage, win, &mrq)) != CS_SUCCESS) { |
| cs_error(dev->link.handle, MapMemPage, ret); |
| return NULL; |
| } |
| dev->offset = mrq.CardOffset; |
| } |
| return dev->win_base + (to & (dev->win_size-1)); |
| } |
| |
| |
| static u8 pcmcia_read8_remap(struct map_info *map, unsigned long ofs) |
| { |
| caddr_t addr; |
| u8 d; |
| |
| addr = remap_window(map, ofs); |
| if(!addr) |
| return 0; |
| |
| d = readb(addr); |
| DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, addr, d); |
| return d; |
| } |
| |
| |
| static u16 pcmcia_read16_remap(struct map_info *map, unsigned long ofs) |
| { |
| caddr_t addr; |
| u16 d; |
| |
| addr = remap_window(map, ofs); |
| if(!addr) |
| return 0; |
| |
| d = readw(addr); |
| DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, addr, d); |
| return d; |
| } |
| |
| |
| static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len) |
| { |
| struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; |
| unsigned long win_size = dev->win_size; |
| |
| DEBUG(3, "to = %p from = %lu len = %u", to, from, len); |
| while(len) { |
| int toread = win_size - (from & (win_size-1)); |
| caddr_t addr; |
| |
| if(toread > len) |
| toread = len; |
| |
| addr = remap_window(map, from); |
| if(!addr) |
| return; |
| |
| DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread); |
| memcpy_fromio(to, addr, toread); |
| len -= toread; |
| to += toread; |
| from += toread; |
| } |
| } |
| |
| |
| static void pcmcia_write8_remap(struct map_info *map, u8 d, unsigned long adr) |
| { |
| caddr_t addr = remap_window(map, adr); |
| |
| if(!addr) |
| return; |
| |
| DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, addr, d); |
| writeb(d, addr); |
| } |
| |
| |
| static void pcmcia_write16_remap(struct map_info *map, u16 d, unsigned long adr) |
| { |
| caddr_t addr = remap_window(map, adr); |
| if(!addr) |
| return; |
| |
| DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, addr, d); |
| writew(d, addr); |
| } |
| |
| |
| static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len) |
| { |
| struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; |
| unsigned long win_size = dev->win_size; |
| |
| DEBUG(3, "to = %lu from = %p len = %u", to, from, len); |
| while(len) { |
| int towrite = win_size - (to & (win_size-1)); |
| caddr_t addr; |
| |
| if(towrite > len) |
| towrite = len; |
| |
| addr = remap_window(map, to); |
| if(!addr) |
| return; |
| |
| DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite); |
| memcpy_toio(addr, from, towrite); |
| len -= towrite; |
| to += towrite; |
| from += towrite; |
| } |
| } |
| |
| |
| /* read/write{8,16} copy_{from,to} routines with direct access */ |
| |
| static u8 pcmcia_read8(struct map_info *map, unsigned long ofs) |
| { |
| caddr_t win_base = (caddr_t)map->map_priv_2; |
| u8 d; |
| |
| d = readb(win_base + ofs); |
| DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, win_base + ofs, d); |
| return d; |
| } |
| |
| |
| static u16 pcmcia_read16(struct map_info *map, unsigned long ofs) |
| { |
| caddr_t win_base = (caddr_t)map->map_priv_2; |
| u16 d; |
| |
| d = readw(win_base + ofs); |
| DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, win_base + ofs, d); |
| return d; |
| } |
| |
| |
| static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) |
| { |
| caddr_t win_base = (caddr_t)map->map_priv_2; |
| |
| DEBUG(3, "to = %p from = %lu len = %u", to, from, len); |
| memcpy_fromio(to, win_base + from, len); |
| } |
| |
| |
| static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr) |
| { |
| caddr_t win_base = (caddr_t)map->map_priv_2; |
| |
| DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, win_base + adr, d); |
| writeb(d, win_base + adr); |
| } |
| |
| |
| static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr) |
| { |
| caddr_t win_base = (caddr_t)map->map_priv_2; |
| |
| DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, win_base + adr, d); |
| writew(d, win_base + adr); |
| } |
| |
| |
| static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) |
| { |
| caddr_t win_base = (caddr_t)map->map_priv_2; |
| |
| DEBUG(3, "to = %lu from = %p len = %u", to, from, len); |
| memcpy_toio(win_base + to, from, len); |
| } |
| |
| |
| static void pcmciamtd_set_vpp(struct map_info *map, int on) |
| { |
| struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; |
| dev_link_t *link = &dev->link; |
| modconf_t mod; |
| int ret; |
| |
| mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID; |
| mod.Vcc = 0; |
| mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0; |
| |
| DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp); |
| ret = CardServices(ModifyConfiguration, link->handle, &mod); |
| if(ret != CS_SUCCESS) { |
| cs_error(link->handle, ModifyConfiguration, ret); |
| } |
| } |
| |
| |
| /* After a card is removed, pcmciamtd_release() will unregister the |
| * device, and release the PCMCIA configuration. If the device is |
| * still open, this will be postponed until it is closed. |
| */ |
| |
| static void pcmciamtd_release(u_long arg) |
| { |
| dev_link_t *link = (dev_link_t *)arg; |
| struct pcmciamtd_dev *dev = NULL; |
| int ret; |
| struct list_head *temp1, *temp2; |
| |
| DEBUG(3, "link = 0x%p", link); |
| /* Find device in list */ |
| list_for_each_safe(temp1, temp2, &dev_list) { |
| dev = list_entry(temp1, struct pcmciamtd_dev, list); |
| if(link == &dev->link) |
| break; |
| } |
| if(link != &dev->link) { |
| DEBUG(1, "Cant find %p in dev_list", link); |
| return; |
| } |
| |
| if(dev) { |
| if(dev->mtd_info) { |
| del_mtd_device(dev->mtd_info); |
| dev->mtd_info = NULL; |
| MOD_DEC_USE_COUNT; |
| } |
| if (link->win) { |
| if(dev->win_base) { |
| iounmap(dev->win_base); |
| dev->win_base = NULL; |
| } |
| CardServices(ReleaseWindow, link->win); |
| } |
| ret = CardServices(ReleaseConfiguration, link->handle); |
| if(ret != CS_SUCCESS) |
| cs_error(link->handle, ReleaseConfiguration, ret); |
| |
| } |
| link->state &= ~DEV_CONFIG; |
| } |
| |
| |
| static void card_settings(struct pcmciamtd_dev *dev, dev_link_t *link, int *new_name) |
| { |
| int rc; |
| tuple_t tuple; |
| cisparse_t parse; |
| u_char buf[64]; |
| |
| tuple.Attributes = 0; |
| tuple.TupleData = (cisdata_t *)buf; |
| tuple.TupleDataMax = sizeof(buf); |
| tuple.TupleOffset = 0; |
| tuple.DesiredTuple = RETURN_FIRST_TUPLE; |
| |
| rc = CardServices(GetFirstTuple, link->handle, &tuple); |
| while(rc == CS_SUCCESS) { |
| rc = CardServices(GetTupleData, link->handle, &tuple); |
| if(rc != CS_SUCCESS) { |
| cs_error(link->handle, GetTupleData, rc); |
| break; |
| } |
| rc = CardServices(ParseTuple, link->handle, &tuple, &parse); |
| if(rc != CS_SUCCESS) { |
| cs_error(link->handle, ParseTuple, rc); |
| break; |
| } |
| |
| switch(tuple.TupleCode) { |
| case CISTPL_FORMAT: { |
| cistpl_format_t *t = &parse.format; |
| (void)t; /* Shut up, gcc */ |
| DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u", |
| t->type, t->edc, t->offset, t->length); |
| break; |
| |
| } |
| |
| case CISTPL_DEVICE: { |
| cistpl_device_t *t = &parse.device; |
| int i; |
| DEBUG(2, "Common memory:"); |
| dev->pcmcia_map.size = t->dev[0].size; |
| for(i = 0; i < t->ndev; i++) { |
| DEBUG(2, "Region %d, type = %u", i, t->dev[i].type); |
| DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp); |
| DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed); |
| DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size); |
| } |
| break; |
| } |
| |
| case CISTPL_VERS_1: { |
| cistpl_vers_1_t *t = &parse.version_1; |
| int i; |
| if(t->ns) { |
| dev->mtd_name[0] = '\0'; |
| for(i = 0; i < t->ns; i++) { |
| if(i) |
| strcat(dev->mtd_name, " "); |
| strcat(dev->mtd_name, t->str+t->ofs[i]); |
| } |
| } |
| DEBUG(2, "Found name: %s", dev->mtd_name); |
| break; |
| } |
| |
| case CISTPL_JEDEC_C: { |
| cistpl_jedec_t *t = &parse.jedec; |
| int i; |
| for(i = 0; i < t->nid; i++) { |
| DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info); |
| } |
| break; |
| } |
| |
| case CISTPL_DEVICE_GEO: { |
| cistpl_device_geo_t *t = &parse.device_geo; |
| int i; |
| dev->pcmcia_map.buswidth = t->geo[0].buswidth; |
| for(i = 0; i < t->ngeo; i++) { |
| DEBUG(2, "region: %d buswidth = %u", i, t->geo[i].buswidth); |
| DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block); |
| DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block); |
| DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block); |
| DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition); |
| DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave); |
| } |
| break; |
| } |
| |
| default: |
| DEBUG(2, "Unknown tuple code %d", tuple.TupleCode); |
| } |
| |
| rc = CardServices(GetNextTuple, link->handle, &tuple, &parse); |
| } |
| if(!dev->pcmcia_map.size) |
| dev->pcmcia_map.size = MAX_PCMCIA_ADDR; |
| |
| if(!dev->pcmcia_map.buswidth) |
| dev->pcmcia_map.buswidth = 2; |
| |
| if(force_size) { |
| dev->pcmcia_map.size = force_size << 20; |
| DEBUG(2, "size forced to %dM", force_size); |
| |
| } |
| |
| if(buswidth) { |
| dev->pcmcia_map.buswidth = buswidth; |
| DEBUG(2, "buswidth forced to %d", buswidth); |
| } |
| |
| dev->pcmcia_map.name = dev->mtd_name; |
| if(!dev->mtd_name[0]) { |
| strcpy(dev->mtd_name, "PCMCIA Memory card"); |
| *new_name = 1; |
| } |
| |
| DEBUG(1, "Device: Size: %lu Width:%d Name: %s", |
| dev->pcmcia_map.size, dev->pcmcia_map.buswidth << 3, dev->mtd_name); |
| } |
| |
| |
| /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event |
| * is received, to configure the PCMCIA socket, and to make the |
| * MTD device available to the system. |
| */ |
| |
| #define CS_CHECK(fn, args...) \ |
| while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed |
| |
| static void pcmciamtd_config(dev_link_t *link) |
| { |
| struct pcmciamtd_dev *dev = link->priv; |
| struct mtd_info *mtd = NULL; |
| cs_status_t status; |
| win_req_t req; |
| int last_ret = 0, last_fn = 0; |
| int ret; |
| int i; |
| config_info_t t; |
| static char *probes[] = { "jedec_probe", "cfi_probe" }; |
| cisinfo_t cisinfo; |
| int new_name = 0; |
| |
| DEBUG(3, "link=0x%p", link); |
| |
| /* Configure card */ |
| link->state |= DEV_CONFIG; |
| |
| DEBUG(2, "Validating CIS"); |
| ret = CardServices(ValidateCIS, link->handle, &cisinfo); |
| if(ret != CS_SUCCESS) { |
| cs_error(link->handle, GetTupleData, ret); |
| } else { |
| DEBUG(2, "ValidateCIS found %d chains", cisinfo.Chains); |
| } |
| |
| card_settings(dev, link, &new_name); |
| |
| dev->pcmcia_map.read8 = pcmcia_read8_remap; |
| dev->pcmcia_map.read16 = pcmcia_read16_remap; |
| dev->pcmcia_map.copy_from = pcmcia_copy_from_remap; |
| dev->pcmcia_map.write8 = pcmcia_write8_remap; |
| dev->pcmcia_map.write16 = pcmcia_write16_remap; |
| dev->pcmcia_map.copy_to = pcmcia_copy_to_remap; |
| if(setvpp == 1) |
| dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp; |
| |
| /* Request a memory window for PCMCIA. Some architeures can map windows upto the maximum |
| that PCMCIA can support (64Mb) - this is ideal and we aim for a window the size of the |
| whole card - otherwise we try smaller windows until we succeed */ |
| |
| req.Attributes = WIN_MEMORY_TYPE_CM | WIN_ENABLE; |
| req.Attributes |= (dev->pcmcia_map.buswidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16; |
| req.Base = 0; |
| req.AccessSpeed = mem_speed; |
| link->win = (window_handle_t)link->handle; |
| req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR; |
| dev->win_size = 0; |
| |
| do { |
| int ret; |
| DEBUG(2, "requesting window with size = %dKB memspeed = %d", |
| req.Size >> 10, req.AccessSpeed); |
| link->win = (window_handle_t)link->handle; |
| ret = CardServices(RequestWindow, &link->win, &req); |
| DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size); |
| if(ret) { |
| req.Size >>= 1; |
| } else { |
| DEBUG(2, "Got window of size %dKB", req.Size >> 10); |
| dev->win_size = req.Size; |
| break; |
| } |
| } while(req.Size >= 0x1000); |
| |
| DEBUG(2, "dev->win_size = %d", dev->win_size); |
| |
| if(!dev->win_size) { |
| err("Cant allocate memory window"); |
| pcmciamtd_release((u_long)link); |
| return; |
| } |
| DEBUG(1, "Allocated a window of %dKB", dev->win_size >> 10); |
| |
| /* Get write protect status */ |
| CS_CHECK(GetStatus, link->handle, &status); |
| DEBUG(2, "status value: 0x%x window handle = 0x%8.8lx", |
| status.CardState, (unsigned long)link->win); |
| dev->win_base = ioremap(req.Base, req.Size); |
| if(!dev->win_base) { |
| err("ioremap(%lu, %u) failed", req.Base, req.Size); |
| pcmciamtd_release((u_long)link); |
| return; |
| } |
| DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x", |
| dev, req.Base, dev->win_base, req.Size); |
| dev->cardsize = 0; |
| dev->offset = 0; |
| |
| dev->pcmcia_map.map_priv_1 = (unsigned long)dev; |
| dev->pcmcia_map.map_priv_2 = (unsigned long)link->win; |
| |
| DEBUG(2, "Getting configuration"); |
| CS_CHECK(GetConfigurationInfo, link->handle, &t); |
| DEBUG(2, "Vcc = %d Vpp1 = %d Vpp2 = %d", t.Vcc, t.Vpp1, t.Vpp2); |
| dev->vpp = (vpp) ? vpp : t.Vpp1; |
| link->conf.Attributes = 0; |
| link->conf.Vcc = t.Vcc; |
| if(setvpp == 2) { |
| link->conf.Vpp1 = dev->vpp; |
| link->conf.Vpp2 = dev->vpp; |
| } else { |
| link->conf.Vpp1 = 0; |
| link->conf.Vpp2 = 0; |
| } |
| |
| link->conf.IntType = INT_MEMORY; |
| link->conf.ConfigBase = t.ConfigBase; |
| link->conf.Status = t.Status; |
| link->conf.Pin = t.Pin; |
| link->conf.Copy = t.Copy; |
| link->conf.ExtStatus = t.ExtStatus; |
| link->conf.ConfigIndex = 0; |
| link->conf.Present = t.Present; |
| DEBUG(2, "Setting Configuration"); |
| ret = CardServices(RequestConfiguration, link->handle, &link->conf); |
| if(ret != CS_SUCCESS) { |
| cs_error(link->handle, RequestConfiguration, ret); |
| } |
| |
| link->dev = NULL; |
| link->state &= ~DEV_CONFIG_PENDING; |
| |
| if(mem_type == 1) { |
| mtd = do_map_probe("map_ram", &dev->pcmcia_map); |
| } else if(mem_type == 2) { |
| mtd = do_map_probe("map_rom", &dev->pcmcia_map); |
| } else { |
| for(i = 0; i < sizeof(probes) / sizeof(char *); i++) { |
| DEBUG(1, "Trying %s", probes[i]); |
| mtd = do_map_probe(probes[i], &dev->pcmcia_map); |
| if(mtd) |
| break; |
| |
| DEBUG(1, "FAILED: %s", probes[i]); |
| } |
| } |
| |
| if(!mtd) { |
| DEBUG(1, "Cant find an MTD"); |
| pcmciamtd_release((u_long)link); |
| return; |
| } |
| |
| dev->mtd_info = mtd; |
| mtd->module = THIS_MODULE; |
| dev->cardsize = mtd->size; |
| |
| if(new_name) { |
| int size = 0; |
| char unit = ' '; |
| /* Since we are using a default name, make it better by adding in the |
| size */ |
| if(mtd->size < 1048576) { /* <1MB in size, show size in K */ |
| size = mtd->size >> 10; |
| unit = 'K'; |
| } else { |
| size = mtd->size >> 20; |
| unit = 'M'; |
| } |
| sprintf(mtd->name, "%d%cB %s", size, unit, "PCMCIA Memory card"); |
| } |
| |
| /* If the memory found is fits completely into the mapped PCMCIA window, |
| use the faster non-remapping read/write functions */ |
| if(dev->cardsize <= dev->win_size) { |
| DEBUG(1, "Using non remapping memory functions"); |
| |
| dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base; |
| dev->pcmcia_map.read8 = pcmcia_read8; |
| dev->pcmcia_map.read16 = pcmcia_read16; |
| dev->pcmcia_map.copy_from = pcmcia_copy_from; |
| dev->pcmcia_map.write8 = pcmcia_write8; |
| dev->pcmcia_map.write16 = pcmcia_write16; |
| dev->pcmcia_map.copy_to = pcmcia_copy_to; |
| } |
| |
| MOD_INC_USE_COUNT; |
| if(add_mtd_device(mtd)) { |
| dev->mtd_info = NULL; |
| MOD_DEC_USE_COUNT; |
| err("Couldnt register MTD device"); |
| pcmciamtd_release((u_long)link); |
| return; |
| } |
| DEBUG(1, "mtd added @ %p mtd->priv = %p", mtd, mtd->priv); |
| |
| return; |
| |
| cs_failed: |
| cs_error(link->handle, last_fn, last_ret); |
| err("CS Error, exiting"); |
| pcmciamtd_release((u_long)link); |
| return; |
| } |
| |
| |
| /* The card status event handler. Mostly, this schedules other |
| * stuff to run after an event is received. A CARD_REMOVAL event |
| * also sets some flags to discourage the driver from trying |
| * to talk to the card any more. |
| */ |
| |
| static int pcmciamtd_event(event_t event, int priority, |
| event_callback_args_t *args) |
| { |
| dev_link_t *link = args->client_data; |
| |
| DEBUG(1, "event=0x%06x", event); |
| switch (event) { |
| case CS_EVENT_CARD_REMOVAL: |
| DEBUG(2, "EVENT_CARD_REMOVAL"); |
| link->state &= ~DEV_PRESENT; |
| if (link->state & DEV_CONFIG) |
| mod_timer(&link->release, jiffies + HZ/20); |
| break; |
| case CS_EVENT_CARD_INSERTION: |
| DEBUG(2, "EVENT_CARD_INSERTION"); |
| link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; |
| pcmciamtd_config(link); |
| break; |
| case CS_EVENT_PM_SUSPEND: |
| DEBUG(2, "EVENT_PM_SUSPEND"); |
| link->state |= DEV_SUSPEND; |
| /* Fall through... */ |
| case CS_EVENT_RESET_PHYSICAL: |
| DEBUG(2, "EVENT_RESET_PHYSICAL"); |
| /* get_lock(link); */ |
| break; |
| case CS_EVENT_PM_RESUME: |
| DEBUG(2, "EVENT_PM_RESUME"); |
| link->state &= ~DEV_SUSPEND; |
| /* Fall through... */ |
| case CS_EVENT_CARD_RESET: |
| DEBUG(2, "EVENT_CARD_RESET"); |
| /* free_lock(link); */ |
| break; |
| default: |
| DEBUG(2, "Unknown event %d", event); |
| } |
| return 0; |
| } |
| |
| |
| /* This deletes a driver "instance". The device is de-registered |
| * with Card Services. If it has been released, all local data |
| * structures are freed. Otherwise, the structures will be freed |
| * when the device is released. |
| */ |
| |
| static void pcmciamtd_detach(dev_link_t *link) |
| { |
| int ret; |
| struct pcmciamtd_dev *dev = NULL; |
| struct list_head *temp1, *temp2; |
| |
| DEBUG(3, "link=0x%p", link); |
| |
| /* Find device in list */ |
| list_for_each_safe(temp1, temp2, &dev_list) { |
| dev = list_entry(temp1, struct pcmciamtd_dev, list); |
| if(link == &dev->link) |
| break; |
| } |
| if(link != &dev->link) { |
| DEBUG(1, "Cant find %p in dev_list", link); |
| return; |
| } |
| |
| del_timer(&link->release); |
| |
| if(!dev) { |
| DEBUG(3, "dev is NULL"); |
| return; |
| } |
| |
| if (link->state & DEV_CONFIG) { |
| //pcmciamtd_release((u_long)link); |
| DEBUG(3, "DEV_CONFIG set"); |
| link->state |= DEV_STALE_LINK; |
| return; |
| } |
| |
| if (link->handle) { |
| DEBUG(2, "Deregistering with card services"); |
| ret = CardServices(DeregisterClient, link->handle); |
| if (ret != CS_SUCCESS) |
| cs_error(link->handle, DeregisterClient, ret); |
| } |
| DEBUG(3, "Freeing dev (%p)", dev); |
| list_del(&dev->list); |
| link->priv = NULL; |
| kfree(dev); |
| } |
| |
| |
| /* pcmciamtd_attach() creates an "instance" of the driver, allocating |
| * local data structures for one device. The device is registered |
| * with Card Services. |
| */ |
| |
| static dev_link_t *pcmciamtd_attach(void) |
| { |
| struct pcmciamtd_dev *dev; |
| dev_link_t *link; |
| client_reg_t client_reg; |
| int ret; |
| |
| /* Create new memory card device */ |
| dev = kmalloc(sizeof(*dev), GFP_KERNEL); |
| if (!dev) return NULL; |
| DEBUG(1, "dev=0x%p", dev); |
| |
| memset(dev, 0, sizeof(*dev)); |
| link = &dev->link; link->priv = dev; |
| |
| link->release.function = &pcmciamtd_release; |
| link->release.data = (u_long)link; |
| |
| link->conf.Attributes = 0; |
| link->conf.IntType = INT_MEMORY; |
| |
| list_add(&dev->list, &dev_list); |
| |
| /* Register with Card Services */ |
| client_reg.dev_info = &dev_info; |
| client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE; |
| client_reg.EventMask = |
| CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET | |
| CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | |
| CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; |
| client_reg.event_handler = &pcmciamtd_event; |
| client_reg.Version = 0x0210; |
| client_reg.event_callback_args.client_data = link; |
| DEBUG(2, "Calling RegisterClient"); |
| ret = CardServices(RegisterClient, &link->handle, &client_reg); |
| if (ret != 0) { |
| cs_error(link->handle, RegisterClient, ret); |
| pcmciamtd_detach(link); |
| return NULL; |
| } |
| |
| return link; |
| } |
| |
| |
| static int __init init_pcmciamtd(void) |
| { |
| servinfo_t serv; |
| |
| info(DRIVER_DESC " " DRIVER_VERSION); |
| CardServices(GetCardServicesInfo, &serv); |
| if (serv.Revision != CS_RELEASE_CODE) { |
| err("Card Services release does not match!"); |
| return -1; |
| } |
| |
| if(buswidth && buswidth != 1 && buswidth != 2) { |
| info("bad buswidth (%d), using default", buswidth); |
| buswidth = 2; |
| } |
| if(force_size && (force_size < 1 || force_size > 64)) { |
| info("bad force_size (%d), using default", force_size); |
| force_size = 0; |
| } |
| if(mem_type && mem_type != 1 && mem_type != 2) { |
| info("bad mem_type (%d), using default", mem_type); |
| mem_type = 0; |
| } |
| register_pccard_driver(&dev_info, &pcmciamtd_attach, &pcmciamtd_detach); |
| return 0; |
| } |
| |
| |
| static void __exit exit_pcmciamtd(void) |
| { |
| struct list_head *temp1, *temp2; |
| |
| DEBUG(1, DRIVER_DESC " unloading"); |
| unregister_pccard_driver(&dev_info); |
| list_for_each_safe(temp1, temp2, &dev_list) { |
| dev_link_t *link = &list_entry(temp1, struct pcmciamtd_dev, list)->link; |
| if (link && (link->state & DEV_CONFIG)) { |
| pcmciamtd_release((u_long)link); |
| pcmciamtd_detach(link); |
| } |
| } |
| } |
| |
| module_init(init_pcmciamtd); |
| module_exit(exit_pcmciamtd); |