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Diffstat (limited to 'drivers/net/wireless/spectrum_cs.c')
| -rw-r--r-- | drivers/net/wireless/spectrum_cs.c | 1120 |
1 files changed, 1120 insertions, 0 deletions
diff --git a/drivers/net/wireless/spectrum_cs.c b/drivers/net/wireless/spectrum_cs.c new file mode 100644 index 0000000..39c6cdf --- /dev/null +++ b/drivers/net/wireless/spectrum_cs.c @@ -0,0 +1,1120 @@ +/* + * Driver for 802.11b cards using RAM-loadable Symbol firmware, such as + * Symbol Wireless Networker LA4100, CompactFlash cards by Socket + * Communications and Intel PRO/Wireless 2011B. + * + * The driver implements Symbol firmware download. The rest is handled + * in hermes.c and orinoco.c. + * + * Utilities for downloading the Symbol firmware are available at + * http://sourceforge.net/projects/orinoco/ + * + * Copyright (C) 2002-2005 Pavel Roskin <proski@gnu.org> + * Portions based on orinoco_cs.c: + * Copyright (C) David Gibson, Linuxcare Australia + * Portions based on Spectrum24tDnld.c from original spectrum24 driver: + * Copyright (C) Symbol Technologies. + * + * See copyright notice in file orinoco.c. + */ + +#define DRIVER_NAME "spectrum_cs" +#define PFX DRIVER_NAME ": " + +#include <linux/config.h> +#ifdef __IN_PCMCIA_PACKAGE__ +#include <pcmcia/k_compat.h> +#endif /* __IN_PCMCIA_PACKAGE__ */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/ptrace.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/ioport.h> +#include <linux/netdevice.h> +#include <linux/if_arp.h> +#include <linux/etherdevice.h> +#include <linux/wireless.h> + +#include <pcmcia/cs_types.h> +#include <pcmcia/cs.h> +#include <pcmcia/cistpl.h> +#include <pcmcia/cisreg.h> +#include <pcmcia/ds.h> + +#include <asm/uaccess.h> +#include <asm/io.h> +#include <asm/system.h> + +#include "orinoco.h" + +/* + * If SPECTRUM_FW_INCLUDED is defined, the firmware is hardcoded into + * the driver. Use get_symbol_fw script to generate spectrum_fw.h and + * copy it to the same directory as spectrum_cs.c. + * + * If SPECTRUM_FW_INCLUDED is not defined, the firmware is loaded at the + * runtime using hotplug. Use the same get_symbol_fw script to generate + * files symbol_sp24t_prim_fw symbol_sp24t_sec_fw, copy them to the + * hotplug firmware directory (typically /usr/lib/hotplug/firmware) and + * make sure that you have hotplug installed and enabled in the kernel. + */ +/* #define SPECTRUM_FW_INCLUDED 1 */ + +#ifdef SPECTRUM_FW_INCLUDED +/* Header with the firmware */ +#include "spectrum_fw.h" +#else /* !SPECTRUM_FW_INCLUDED */ +#include <linux/firmware.h> +static unsigned char *primsym; +static unsigned char *secsym; +static const char primary_fw_name[] = "symbol_sp24t_prim_fw"; +static const char secondary_fw_name[] = "symbol_sp24t_sec_fw"; +#endif /* !SPECTRUM_FW_INCLUDED */ + +/********************************************************************/ +/* Module stuff */ +/********************************************************************/ + +MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>"); +MODULE_DESCRIPTION("Driver for Symbol Spectrum24 Trilogy cards with firmware downloader"); +MODULE_LICENSE("Dual MPL/GPL"); + +/* Module parameters */ + +/* Some D-Link cards have buggy CIS. They do work at 5v properly, but + * don't have any CIS entry for it. This workaround it... */ +static int ignore_cis_vcc; /* = 0 */ +module_param(ignore_cis_vcc, int, 0); +MODULE_PARM_DESC(ignore_cis_vcc, "Allow voltage mismatch between card and socket"); + +/********************************************************************/ +/* Magic constants */ +/********************************************************************/ + +/* + * The dev_info variable is the "key" that is used to match up this + * device driver with appropriate cards, through the card + * configuration database. + */ +static dev_info_t dev_info = DRIVER_NAME; + +/********************************************************************/ +/* Data structures */ +/********************************************************************/ + +/* PCMCIA specific device information (goes in the card field of + * struct orinoco_private */ +struct orinoco_pccard { + dev_link_t link; + dev_node_t node; +}; + +/* + * A linked list of "instances" of the device. Each actual PCMCIA + * card corresponds to one device instance, and is described by one + * dev_link_t structure (defined in ds.h). + */ +static dev_link_t *dev_list; /* = NULL */ + +/********************************************************************/ +/* Function prototypes */ +/********************************************************************/ + +/* device methods */ +static int spectrum_cs_hard_reset(struct orinoco_private *priv); + +/* PCMCIA gumpf */ +static void spectrum_cs_config(dev_link_t * link); +static void spectrum_cs_release(dev_link_t * link); +static int spectrum_cs_event(event_t event, int priority, + event_callback_args_t * args); + +static dev_link_t *spectrum_cs_attach(void); +static void spectrum_cs_detach(dev_link_t *); + +/********************************************************************/ +/* Firmware downloader */ +/********************************************************************/ + +/* Position of PDA in the adapter memory */ +#define EEPROM_ADDR 0x3000 +#define EEPROM_LEN 0x200 +#define PDA_OFFSET 0x100 + +#define PDA_ADDR (EEPROM_ADDR + PDA_OFFSET) +#define PDA_WORDS ((EEPROM_LEN - PDA_OFFSET) / 2) + +/* Constants for the CISREG_CCSR register */ +#define HCR_RUN 0x07 /* run firmware after reset */ +#define HCR_IDLE 0x0E /* don't run firmware after reset */ +#define HCR_MEM16 0x10 /* memory width bit, should be preserved */ + +/* + * AUX port access. To unlock the AUX port write the access keys to the + * PARAM0-2 registers, then write HERMES_AUX_ENABLE to the HERMES_CONTROL + * register. Then read it and make sure it's HERMES_AUX_ENABLED. + */ +#define HERMES_AUX_ENABLE 0x8000 /* Enable auxiliary port access */ +#define HERMES_AUX_DISABLE 0x4000 /* Disable to auxiliary port access */ +#define HERMES_AUX_ENABLED 0xC000 /* Auxiliary port is open */ + +#define HERMES_AUX_PW0 0xFE01 +#define HERMES_AUX_PW1 0xDC23 +#define HERMES_AUX_PW2 0xBA45 + +/* End markers */ +#define PDI_END 0x00000000 /* End of PDA */ +#define BLOCK_END 0xFFFFFFFF /* Last image block */ +#define TEXT_END 0x1A /* End of text header */ + +/* + * The following structures have little-endian fields denoted by + * the leading underscore. Don't access them directly - use inline + * functions defined below. + */ + +/* + * The binary image to be downloaded consists of series of data blocks. + * Each block has the following structure. + */ +struct dblock { + u32 _addr; /* adapter address where to write the block */ + u16 _len; /* length of the data only, in bytes */ + char data[0]; /* data to be written */ +} __attribute__ ((packed)); + +/* + * Plug Data References are located in in the image after the last data + * block. They refer to areas in the adapter memory where the plug data + * items with matching ID should be written. + */ +struct pdr { + u32 _id; /* record ID */ + u32 _addr; /* adapter address where to write the data */ + u32 _len; /* expected length of the data, in bytes */ + char next[0]; /* next PDR starts here */ +} __attribute__ ((packed)); + + +/* + * Plug Data Items are located in the EEPROM read from the adapter by + * primary firmware. They refer to the device-specific data that should + * be plugged into the secondary firmware. + */ +struct pdi { + u16 _len; /* length of ID and data, in words */ + u16 _id; /* record ID */ + char data[0]; /* plug data */ +} __attribute__ ((packed));; + + +/* Functions for access to little-endian data */ +static inline u32 +dblock_addr(const struct dblock *blk) +{ + return le32_to_cpu(blk->_addr); +} + +static inline u32 +dblock_len(const struct dblock *blk) +{ + return le16_to_cpu(blk->_len); +} + +static inline u32 +pdr_id(const struct pdr *pdr) +{ + return le32_to_cpu(pdr->_id); +} + +static inline u32 +pdr_addr(const struct pdr *pdr) +{ + return le32_to_cpu(pdr->_addr); +} + +static inline u32 +pdr_len(const struct pdr *pdr) +{ + return le32_to_cpu(pdr->_len); +} + +static inline u32 +pdi_id(const struct pdi *pdi) +{ + return le16_to_cpu(pdi->_id); +} + +/* Return length of the data only, in bytes */ +static inline u32 +pdi_len(const struct pdi *pdi) +{ + return 2 * (le16_to_cpu(pdi->_len) - 1); +} + + +/* Set address of the auxiliary port */ +static inline void +spectrum_aux_setaddr(hermes_t *hw, u32 addr) +{ + hermes_write_reg(hw, HERMES_AUXPAGE, (u16) (addr >> 7)); + hermes_write_reg(hw, HERMES_AUXOFFSET, (u16) (addr & 0x7F)); +} + + +/* Open access to the auxiliary port */ +static int +spectrum_aux_open(hermes_t *hw) +{ + int i; + + /* Already open? */ + if (hermes_read_reg(hw, HERMES_CONTROL) == HERMES_AUX_ENABLED) + return 0; + + hermes_write_reg(hw, HERMES_PARAM0, HERMES_AUX_PW0); + hermes_write_reg(hw, HERMES_PARAM1, HERMES_AUX_PW1); + hermes_write_reg(hw, HERMES_PARAM2, HERMES_AUX_PW2); + hermes_write_reg(hw, HERMES_CONTROL, HERMES_AUX_ENABLE); + + for (i = 0; i < 20; i++) { + udelay(10); + if (hermes_read_reg(hw, HERMES_CONTROL) == + HERMES_AUX_ENABLED) + return 0; + } + + return -EBUSY; +} + + +#define CS_CHECK(fn, ret) \ + do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) + +/* + * Reset the card using configuration registers COR and CCSR. + * If IDLE is 1, stop the firmware, so that it can be safely rewritten. + */ +static int +spectrum_reset(dev_link_t *link, int idle) +{ + int last_ret, last_fn; + conf_reg_t reg; + u_int save_cor; + + /* Doing it if hardware is gone is guaranteed crash */ + if (!(link->state & DEV_CONFIG)) + return -ENODEV; + + /* Save original COR value */ + reg.Function = 0; + reg.Action = CS_READ; + reg.Offset = CISREG_COR; + CS_CHECK(AccessConfigurationRegister, + pcmcia_access_configuration_register(link->handle, ®)); + save_cor = reg.Value; + + /* Soft-Reset card */ + reg.Action = CS_WRITE; + reg.Offset = CISREG_COR; + reg.Value = (save_cor | COR_SOFT_RESET); + CS_CHECK(AccessConfigurationRegister, + pcmcia_access_configuration_register(link->handle, ®)); + udelay(1000); + + /* Read CCSR */ + reg.Action = CS_READ; + reg.Offset = CISREG_CCSR; + CS_CHECK(AccessConfigurationRegister, + pcmcia_access_configuration_register(link->handle, ®)); + + /* + * Start or stop the firmware. Memory width bit should be + * preserved from the value we've just read. + */ + reg.Action = CS_WRITE; + reg.Offset = CISREG_CCSR; + reg.Value = (idle ? HCR_IDLE : HCR_RUN) | (reg.Value & HCR_MEM16); + CS_CHECK(AccessConfigurationRegister, + pcmcia_access_configuration_register(link->handle, ®)); + udelay(1000); + + /* Restore original COR configuration index */ + reg.Action = CS_WRITE; + reg.Offset = CISREG_COR; + reg.Value = (save_cor & ~COR_SOFT_RESET); + CS_CHECK(AccessConfigurationRegister, + pcmcia_access_configuration_register(link->handle, ®)); + udelay(1000); + return 0; + + cs_failed: + cs_error(link->handle, last_fn, last_ret); + return -ENODEV; +} + + +/* + * Scan PDR for the record with the specified RECORD_ID. + * If it's not found, return NULL. + */ +static struct pdr * +spectrum_find_pdr(struct pdr *first_pdr, u32 record_id) +{ + struct pdr *pdr = first_pdr; + + while (pdr_id(pdr) != PDI_END) { + /* + * PDR area is currently not terminated by PDI_END. + * It's followed by CRC records, which have the type + * field where PDR has length. The type can be 0 or 1. + */ + if (pdr_len(pdr) < 2) + return NULL; + + /* If the record ID matches, we are done */ + if (pdr_id(pdr) == record_id) + return pdr; + + pdr = (struct pdr *) pdr->next; + } + return NULL; +} + + +/* Process one Plug Data Item - find corresponding PDR and plug it */ +static int +spectrum_plug_pdi(hermes_t *hw, struct pdr *first_pdr, struct pdi *pdi) +{ + struct pdr *pdr; + + /* Find the PDI corresponding to this PDR */ + pdr = spectrum_find_pdr(first_pdr, pdi_id(pdi)); + + /* No match is found, safe to ignore */ + if (!pdr) + return 0; + + /* Lengths of the data in PDI and PDR must match */ + if (pdi_len(pdi) != pdr_len(pdr)) + return -EINVAL; + + /* do the actual plugging */ + spectrum_aux_setaddr(hw, pdr_addr(pdr)); + hermes_write_words(hw, HERMES_AUXDATA, pdi->data, + pdi_len(pdi) / 2); + + return 0; +} + + +/* Read PDA from the adapter */ +static int +spectrum_read_pda(hermes_t *hw, u16 *pda, int pda_len) +{ + int ret; + int pda_size; + + /* Issue command to read EEPROM */ + ret = hermes_docmd_wait(hw, HERMES_CMD_READMIF, 0, NULL); + if (ret) + return ret; + + /* Open auxiliary port */ + ret = spectrum_aux_open(hw); + if (ret) + return ret; + + /* read PDA from EEPROM */ + spectrum_aux_setaddr(hw, PDA_ADDR); + hermes_read_words(hw, HERMES_AUXDATA, pda, pda_len / 2); + + /* Check PDA length */ + pda_size = le16_to_cpu(pda[0]); + if (pda_size > pda_len) + return -EINVAL; + + return 0; +} + + +/* Parse PDA and write the records into the adapter */ +static int +spectrum_apply_pda(hermes_t *hw, const struct dblock *first_block, + u16 *pda) +{ + int ret; + struct pdi *pdi; + struct pdr *first_pdr; + const struct dblock *blk = first_block; + + /* Skip all blocks to locate Plug Data References */ + while (dblock_addr(blk) != BLOCK_END) + blk = (struct dblock *) &blk->data[dblock_len(blk)]; + + first_pdr = (struct pdr *) blk; + + /* Go through every PDI and plug them into the adapter */ + pdi = (struct pdi *) (pda + 2); + while (pdi_id(pdi) != PDI_END) { + ret = spectrum_plug_pdi(hw, first_pdr, pdi); + if (ret) + return ret; + + /* Increment to the next PDI */ + pdi = (struct pdi *) &pdi->data[pdi_len(pdi)]; + } + return 0; +} + + +/* Load firmware blocks into the adapter */ +static int +spectrum_load_blocks(hermes_t *hw, const struct dblock *first_block) +{ + const struct dblock *blk; + u32 blkaddr; + u32 blklen; + + blk = first_block; + blkaddr = dblock_addr(blk); + blklen = dblock_len(blk); + + while (dblock_addr(blk) != BLOCK_END) { + spectrum_aux_setaddr(hw, blkaddr); + hermes_write_words(hw, HERMES_AUXDATA, blk->data, + blklen / 2); + + blk = (struct dblock *) &blk->data[blklen]; + blkaddr = dblock_addr(blk); + blklen = dblock_len(blk); + } + return 0; +} + + +/* + * Process a firmware image - stop the card, load the firmware, reset + * the card and make sure it responds. For the secondary firmware take + * care of the PDA - read it and then write it on top of the firmware. + */ +static int +spectrum_dl_image(hermes_t *hw, dev_link_t *link, + const unsigned char *image) +{ + int ret; + const unsigned char *ptr; + const struct dblock *first_block; + + /* Plug Data Area (PDA) */ + u16 pda[PDA_WORDS]; + + /* Binary block begins after the 0x1A marker */ + ptr = image; + while (*ptr++ != TEXT_END); + first_block = (const struct dblock *) ptr; + + /* Read the PDA */ + if (image != primsym) { + ret = spectrum_read_pda(hw, pda, sizeof(pda)); + if (ret) + return ret; + } + + /* Stop the firmware, so that it can be safely rewritten */ + ret = spectrum_reset(link, 1); + if (ret) + return ret; + + /* Program the adapter with new firmware */ + ret = spectrum_load_blocks(hw, first_block); + if (ret) + return ret; + + /* Write the PDA to the adapter */ + if (image != primsym) { + ret = spectrum_apply_pda(hw, first_block, pda); + if (ret) + return ret; + } + + /* Run the firmware */ + ret = spectrum_reset(link, 0); + if (ret) + return ret; + + /* Reset hermes chip and make sure it responds */ + ret = hermes_init(hw); + + /* hermes_reset() should return 0 with the secondary firmware */ + if (image != primsym && ret != 0) + return -ENODEV; + + /* And this should work with any firmware */ + if (!hermes_present(hw)) + return -ENODEV; + + return 0; +} + + +/* + * Download the firmware into the card, this also does a PCMCIA soft + * reset on the card, to make sure it's in a sane state. + */ +static int +spectrum_dl_firmware(hermes_t *hw, dev_link_t *link) +{ + int ret; + client_handle_t handle = link->handle; + +#ifndef SPECTRUM_FW_INCLUDED + const struct firmware *fw_entry; + + if (request_firmware(&fw_entry, primary_fw_name, + &handle_to_dev(handle)) == 0) { + primsym = fw_entry->data; + } else { + printk(KERN_ERR PFX "Cannot find firmware: %s\n", + primary_fw_name); + return -ENOENT; + } + + if (request_firmware(&fw_entry, secondary_fw_name, + &handle_to_dev(handle)) == 0) { + secsym = fw_entry->data; + } else { + printk(KERN_ERR PFX "Cannot find firmware: %s\n", + secondary_fw_name); + return -ENOENT; + } +#endif + + /* Load primary firmware */ + ret = spectrum_dl_image(hw, link, primsym); + if (ret) { + printk(KERN_ERR PFX "Primary firmware download failed\n"); + return ret; + } + + /* Load secondary firmware */ + ret = spectrum_dl_image(hw, link, secsym); + + if (ret) { + printk(KERN_ERR PFX "Secondary firmware download failed\n"); + } + + return ret; +} + +/********************************************************************/ +/* Device methods */ +/********************************************************************/ + +static int +spectrum_cs_hard_reset(struct orinoco_private *priv) +{ + struct orinoco_pccard *card = priv->card; + dev_link_t *link = &card->link; + int err; + + if (!hermes_present(&priv->hw)) { + /* The firmware needs to be reloaded */ + if (spectrum_dl_firmware(&priv->hw, &card->link) != 0) { + printk(KERN_ERR PFX "Firmware download failed\n"); + err = -ENODEV; + } + } else { + /* Soft reset using COR and HCR */ + spectrum_reset(link, 0); + } + + return 0; +} + +/********************************************************************/ +/* PCMCIA stuff */ +/********************************************************************/ + +/* + * This creates an "instance" of the driver, allocating local data + * structures for one device. The device is registered with Card + * Services. + * + * The dev_link structure is initialized, but we don't actually + * configure the card at this point -- we wait until we receive a card + * insertion event. */ +static dev_link_t * +spectrum_cs_attach(void) +{ + struct net_device *dev; + struct orinoco_private *priv; + struct orinoco_pccard *card; + dev_link_t *link; + client_reg_t client_reg; + int ret; + + dev = alloc_orinocodev(sizeof(*card), spectrum_cs_hard_reset); + if (! dev) + return NULL; + priv = netdev_priv(dev); + card = priv->card; + + /* Link both structures together */ + link = &card->link; + link->priv = dev; + + /* Interrupt setup */ + link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; + link->irq.IRQInfo1 = IRQ_LEVEL_ID; + link->irq.Handler = orinoco_interrupt; + link->irq.Instance = dev; + + /* General socket configuration defaults can go here. In this + * client, we assume very little, and rely on the CIS for + * almost everything. In most clients, many details (i.e., + * number, sizes, and attributes of IO windows) are fixed by + * the nature of the device, and can be hard-wired here. */ + link->conf.Attributes = 0; + link->conf.IntType = INT_MEMORY_AND_IO; + + /* Register with Card Services */ + /* FIXME: need a lock? */ + link->next = dev_list; + dev_list = link; + + client_reg.dev_info = &dev_info; + client_reg.Version = 0x0210; /* FIXME: what does this mean? */ + client_reg.event_callback_args.client_data = link; + + ret = pcmcia_register_client(&link->handle, &client_reg); + if (ret != CS_SUCCESS) { + cs_error(link->handle, RegisterClient, ret); + spectrum_cs_detach(link); + return NULL; + } + + return link; +} /* spectrum_cs_attach */ + +/* + * 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 spectrum_cs_detach(dev_link_t *link) +{ + dev_link_t **linkp; + struct net_device *dev = link->priv; + + /* Locate device structure */ + for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) + if (*linkp == link) + break; + + BUG_ON(*linkp == NULL); + + if (link->state & DEV_CONFIG) + spectrum_cs_release(link); + + /* Break the link with Card Services */ + if (link->handle) + pcmcia_deregister_client(link->handle); + + /* Unlink device structure, and free it */ + *linkp = link->next; + DEBUG(0, PFX "detach: link=%p link->dev=%p\n", link, link->dev); + if (link->dev) { + DEBUG(0, PFX "About to unregister net device %p\n", + dev); + unregister_netdev(dev); + } + free_orinocodev(dev); +} /* spectrum_cs_detach */ + +/* + * spectrum_cs_config() is scheduled to run after a CARD_INSERTION + * event is received, to configure the PCMCIA socket, and to make the + * device available to the system. + */ + +static void +spectrum_cs_config(dev_link_t *link) +{ + struct net_device *dev = link->priv; + client_handle_t handle = link->handle; + struct orinoco_private *priv = netdev_priv(dev); + struct orinoco_pccard *card = priv->card; + hermes_t *hw = &priv->hw; + int last_fn, last_ret; + u_char buf[64]; + config_info_t conf; + cisinfo_t info; + tuple_t tuple; + cisparse_t parse; + void __iomem *mem; + + CS_CHECK(ValidateCIS, pcmcia_validate_cis(handle, &info)); + + /* + * This reads the card's CONFIG tuple to find its + * configuration registers. + */ + tuple.DesiredTuple = CISTPL_CONFIG; + tuple.Attributes = 0; + tuple.TupleData = buf; + tuple.TupleDataMax = sizeof(buf); + tuple.TupleOffset = 0; + CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); + CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); + CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); + link->conf.ConfigBase = parse.config.base; + link->conf.Present = parse.config.rmask[0]; + + /* Configure card */ + link->state |= DEV_CONFIG; + + /* Look up the current Vcc */ + CS_CHECK(GetConfigurationInfo, + pcmcia_get_configuration_info(handle, &conf)); + link->conf.Vcc = conf.Vcc; + + /* + * In this loop, we scan the CIS for configuration table + * entries, each of which describes a valid card + * configuration, including voltage, IO window, memory window, + * and interrupt settings. + * + * We make no assumptions about the card to be configured: we + * use just the information available in the CIS. In an ideal + * world, this would work for any PCMCIA card, but it requires + * a complete and accurate CIS. In practice, a driver usually + * "knows" most of these things without consulting the CIS, + * and most client drivers will only use the CIS to fill in + * implementation-defined details. + */ + tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; + CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); + while (1) { + cistpl_cftable_entry_t *cfg = &(parse.cftable_entry); + cistpl_cftable_entry_t dflt = { .index = 0 }; + + if ( (pcmcia_get_tuple_data(handle, &tuple) != 0) + || (pcmcia_parse_tuple(handle, &tuple, &parse) != 0)) + goto next_entry; + + if (cfg->flags & CISTPL_CFTABLE_DEFAULT) + dflt = *cfg; + if (cfg->index == 0) + goto next_entry; + link->conf.ConfigIndex = cfg->index; + + /* Does this card need audio output? */ + if (cfg->flags & CISTPL_CFTABLE_AUDIO) { + link->conf.Attributes |= CONF_ENABLE_SPKR; + link->conf.Status = CCSR_AUDIO_ENA; + } + + /* Use power settings for Vcc and Vpp if present */ + /* Note that the CIS values need to be rescaled */ + if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) { + if (conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) { + DEBUG(2, "spectrum_cs_config: Vcc mismatch (conf.Vcc = %d, CIS = %d)\n", conf.Vcc, cfg->vcc.param[CISTPL_POWER_VNOM] / 10000); + if (!ignore_cis_vcc) + goto next_entry; + } + } else if (dflt.vcc.present & (1 << CISTPL_POWER_VNOM)) { + if (conf.Vcc != dflt.vcc.param[CISTPL_POWER_VNOM] / 10000) { + DEBUG(2, "spectrum_cs_config: Vcc mismatch (conf.Vcc = %d, CIS = %d)\n", conf.Vcc, dflt.vcc.param[CISTPL_POWER_VNOM] / 10000); + if(!ignore_cis_vcc) + goto next_entry; + } + } + + if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM)) + link->conf.Vpp1 = link->conf.Vpp2 = + cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000; + else if (dflt.vpp1.present & (1 << CISTPL_POWER_VNOM)) + link->conf.Vpp1 = link->conf.Vpp2 = + dflt.vpp1.param[CISTPL_POWER_VNOM] / 10000; + + /* Do we need to allocate an interrupt? */ + link->conf.Attributes |= CONF_ENABLE_IRQ; + + /* IO window settings */ + link->io.NumPorts1 = link->io.NumPorts2 = 0; + if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { + cistpl_io_t *io = + (cfg->io.nwin) ? &cfg->io : &dflt.io; + link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; + if (!(io->flags & CISTPL_IO_8BIT)) + link->io.Attributes1 = + IO_DATA_PATH_WIDTH_16; + if (!(io->flags & CISTPL_IO_16BIT)) + link->io.Attributes1 = + IO_DATA_PATH_WIDTH_8; + link->io.IOAddrLines = + io->flags & CISTPL_IO_LINES_MASK; + link->io.BasePort1 = io->win[0].base; + link->io.NumPorts1 = io->win[0].len; + if (io->nwin > 1) { + link->io.Attributes2 = + link->io.Attributes1; + link->io.BasePort2 = io->win[1].base; + link->io.NumPorts2 = io->win[1].len; + } + + /* This reserves IO space but doesn't actually enable it */ + if (pcmcia_request_io(link->handle, &link->io) != 0) + goto next_entry; + } + + + /* If we got this far, we're cool! */ + + break; + + next_entry: + if (link->io.NumPorts1) + pcmcia_release_io(link->handle, &link->io); + last_ret = pcmcia_get_next_tuple(handle, &tuple); + if (last_ret == CS_NO_MORE_ITEMS) { + printk(KERN_ERR PFX "GetNextTuple(): No matching " + "CIS configuration. Maybe you need the " + "ignore_cis_vcc=1 parameter.\n"); + goto cs_failed; + } + } + + /* + * Allocate an interrupt line. Note that this does not assign + * a handler to the interrupt, unless the 'Handler' member of + * the irq structure is initialized. + */ + CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq)); + + /* We initialize the hermes structure before completing PCMCIA + * configuration just in case the interrupt handler gets + * called. */ + mem = ioport_map(link->io.BasePort1, link->io.NumPorts1); + if (!mem) + goto cs_failed; + + hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING); + + /* + * This actually configures the PCMCIA socket -- setting up + * the I/O windows and the interrupt mapping, and putting the + * card and host interface into "Memory and IO" mode. + */ + CS_CHECK(RequestConfiguration, + pcmcia_request_configuration(link->handle, &link->conf)); + + /* Ok, we have the configuration, prepare to register the netdev */ + dev->base_addr = link->io.BasePort1; + dev->irq = link->irq.AssignedIRQ; + SET_MODULE_OWNER(dev); + card->node.major = card->node.minor = 0; + + /* Reset card and download firmware */ + if (spectrum_cs_hard_reset(priv) != 0) { + goto failed; + } + + SET_NETDEV_DEV(dev, &handle_to_dev(handle)); + /* Tell the stack we exist */ + if (register_netdev(dev) != 0) { + printk(KERN_ERR PFX "register_netdev() failed\n"); + goto failed; + } + + /* At this point, the dev_node_t structure(s) needs to be + * initialized and arranged in a linked list at link->dev. */ + strcpy(card->node.dev_name, dev->name); + link->dev = &card->node; /* link->dev being non-NULL is also + used to indicate that the + net_device has been registered */ + link->state &= ~DEV_CONFIG_PENDING; + + /* Finally, report what we've done */ + printk(KERN_DEBUG "%s: index 0x%02x: Vcc %d.%d", + dev->name, link->conf.ConfigIndex, + link->conf.Vcc / 10, link->conf.Vcc % 10); + if (link->conf.Vpp1) + printk(", Vpp %d.%d", link->conf.Vpp1 / 10, + link->conf.Vpp1 % 10); + printk(", irq %d", link->irq.AssignedIRQ); + if (link->io.NumPorts1) + printk(", io 0x%04x-0x%04x", link->io.BasePort1, + link->io.BasePort1 + link->io.NumPorts1 - 1); + if (link->io.NumPorts2) + printk(" & 0x%04x-0x%04x", link->io.BasePort2, + link->io.BasePort2 + link->io.NumPorts2 - 1); + printk("\n"); + + return; + + cs_failed: + cs_error(link->handle, last_fn, last_ret); + + failed: + spectrum_cs_release(link); +} /* spectrum_cs_config */ + +/* + * After a card is removed, spectrum_cs_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 +spectrum_cs_release(dev_link_t *link) +{ + struct net_device *dev = link->priv; + struct orinoco_private *priv = netdev_priv(dev); + unsigned long flags; + + /* We're committed to taking the device away now, so mark the + * hardware as unavailable */ + spin_lock_irqsave(&priv->lock, flags); + priv->hw_unavailable++; + spin_unlock_irqrestore(&priv->lock, flags); + + /* Don't bother checking to see if these succeed or not */ + pcmcia_release_configuration(link->handle); + if (link->io.NumPorts1) + pcmcia_release_io(link->handle, &link->io); + if (link->irq.AssignedIRQ) + pcmcia_release_irq(link->handle, &link->irq); + link->state &= ~DEV_CONFIG; + if (priv->hw.iobase) + ioport_unmap(priv->hw.iobase); +} /* spectrum_cs_release */ + +/* + * The card status event handler. Mostly, this schedules other stuff + * to run after an event is received. + */ +static int +spectrum_cs_event(event_t event, int priority, + event_callback_args_t * args) +{ + dev_link_t *link = args->client_data; + struct net_device *dev = link->priv; + struct orinoco_private *priv = netdev_priv(dev); + int err = 0; + unsigned long flags; + + switch (event) { + case CS_EVENT_CARD_REMOVAL: + link->state &= ~DEV_PRESENT; + if (link->state & DEV_CONFIG) { + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + netif_device_detach(dev); + priv->hw_unavailable++; + spin_unlock_irqrestore(&priv->lock, flags); + } + break; + + case CS_EVENT_CARD_INSERTION: + link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; + spectrum_cs_config(link); + break; + + case CS_EVENT_PM_SUSPEND: + link->state |= DEV_SUSPEND; + /* Fall through... */ + case CS_EVENT_RESET_PHYSICAL: + /* Mark the device as stopped, to block IO until later */ + if (link->state & DEV_CONFIG) { + /* This is probably racy, but I can't think of + a better way, short of rewriting the PCMCIA + layer to not suck :-( */ + spin_lock_irqsave(&priv->lock, flags); + + err = __orinoco_down(dev); + if (err) + printk(KERN_WARNING "%s: %s: Error %d downing interface\n", + dev->name, + event == CS_EVENT_PM_SUSPEND ? "SUSPEND" : "RESET_PHYSICAL", + err); + + netif_device_detach(dev); + priv->hw_unavailable++; + + spin_unlock_irqrestore(&priv->lock, flags); + + pcmcia_release_configuration(link->handle); + } + break; + + case CS_EVENT_PM_RESUME: + link->state &= ~DEV_SUSPEND; + /* Fall through... */ + case CS_EVENT_CARD_RESET: + if (link->state & DEV_CONFIG) { + /* FIXME: should we double check that this is + * the same card as we had before */ + pcmcia_request_configuration(link->handle, &link->conf); + netif_device_attach(dev); + priv->hw_unavailable--; + schedule_work(&priv->reset_work); + } + break; + } + + return err; +} /* spectrum_cs_event */ + +/********************************************************************/ +/* Module initialization */ +/********************************************************************/ + +/* Can't be declared "const" or the whole __initdata section will + * become const */ +static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION + " (Pavel Roskin <proski@gnu.org>," + " David Gibson <hermes@gibson.dropbear.id.au>, et al)"; + +static struct pcmcia_device_id spectrum_cs_ids[] = { + PCMCIA_DEVICE_MANF_CARD(0x026c, 0x0001), /* Symbol Spectrum24 LA4100 */ + PCMCIA_DEVICE_MANF_CARD(0x0104, 0x0001), /* Socket Communications CF */ + PCMCIA_DEVICE_MANF_CARD(0x0089, 0x0001), /* Intel PRO/Wireless 2011B */ + PCMCIA_DEVICE_NULL, +}; +MODULE_DEVICE_TABLE(pcmcia, spectrum_cs_ids); + +static struct pcmcia_driver orinoco_driver = { + .owner = THIS_MODULE, + .drv = { + .name = DRIVER_NAME, + }, + .attach = spectrum_cs_attach, + .event = spectrum_cs_event, + .detach = spectrum_cs_detach, + .id_table = spectrum_cs_ids, +}; + +static int __init +init_spectrum_cs(void) +{ + printk(KERN_DEBUG "%s\n", version); + + return pcmcia_register_driver(&orinoco_driver); +} + +static void __exit +exit_spectrum_cs(void) +{ + pcmcia_unregister_driver(&orinoco_driver); + BUG_ON(dev_list != NULL); +} + +module_init(init_spectrum_cs); +module_exit(exit_spectrum_cs); |
