diff options
Diffstat (limited to 'drivers/net/wireless/orinoco/spectrum_cs.c')
| -rw-r--r-- | drivers/net/wireless/orinoco/spectrum_cs.c | 448 |
1 files changed, 448 insertions, 0 deletions
diff --git a/drivers/net/wireless/orinoco/spectrum_cs.c b/drivers/net/wireless/orinoco/spectrum_cs.c new file mode 100644 index 0000000..7eb42f4 --- /dev/null +++ b/drivers/net/wireless/orinoco/spectrum_cs.c @@ -0,0 +1,448 @@ +/* + * Driver for 802.11b cards using RAM-loadable Symbol firmware, such as + * Symbol Wireless Networker LA4137, CompactFlash cards by Socket + * Communications and Intel PRO/Wireless 2011B. + * + * The driver implements Symbol firmware download. The rest is handled + * in hermes.c and main.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 main.c. + */ + +#define DRIVER_NAME "spectrum_cs" +#define PFX DRIVER_NAME ": " + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <pcmcia/cistpl.h> +#include <pcmcia/cisreg.h> +#include <pcmcia/ds.h> + +#include "orinoco.h" + +/********************************************************************/ +/* 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"); + +/********************************************************************/ +/* Data structures */ +/********************************************************************/ + +/* PCMCIA specific device information (goes in the card field of + * struct orinoco_private */ +struct orinoco_pccard { + struct pcmcia_device *p_dev; +}; + +/********************************************************************/ +/* Function prototypes */ +/********************************************************************/ + +static int spectrum_cs_config(struct pcmcia_device *link); +static void spectrum_cs_release(struct pcmcia_device *link); + +/* 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 */ + + +/* + * 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(struct pcmcia_device *link, int idle) +{ + int ret; + u8 save_cor; + u8 ccsr; + + /* Doing it if hardware is gone is guaranteed crash */ + if (!pcmcia_dev_present(link)) + return -ENODEV; + + /* Save original COR value */ + ret = pcmcia_read_config_byte(link, CISREG_COR, &save_cor); + if (ret) + goto failed; + + /* Soft-Reset card */ + ret = pcmcia_write_config_byte(link, CISREG_COR, + (save_cor | COR_SOFT_RESET)); + if (ret) + goto failed; + udelay(1000); + + /* Read CCSR */ + ret = pcmcia_read_config_byte(link, CISREG_CCSR, &ccsr); + if (ret) + goto failed; + + /* + * Start or stop the firmware. Memory width bit should be + * preserved from the value we've just read. + */ + ccsr = (idle ? HCR_IDLE : HCR_RUN) | (ccsr & HCR_MEM16); + ret = pcmcia_write_config_byte(link, CISREG_CCSR, ccsr); + if (ret) + goto failed; + udelay(1000); + + /* Restore original COR configuration index */ + ret = pcmcia_write_config_byte(link, CISREG_COR, + (save_cor & ~COR_SOFT_RESET)); + if (ret) + goto failed; + udelay(1000); + return 0; + +failed: + return -ENODEV; +} + +/********************************************************************/ +/* Device methods */ +/********************************************************************/ + +static int +spectrum_cs_hard_reset(struct orinoco_private *priv) +{ + struct orinoco_pccard *card = priv->card; + struct pcmcia_device *link = card->p_dev; + + /* Soft reset using COR and HCR */ + spectrum_reset(link, 0); + + return 0; +} + +static int +spectrum_cs_stop_firmware(struct orinoco_private *priv, int idle) +{ + struct orinoco_pccard *card = priv->card; + struct pcmcia_device *link = card->p_dev; + + return spectrum_reset(link, idle); +} + +/********************************************************************/ +/* PCMCIA stuff */ +/********************************************************************/ + +static int +spectrum_cs_probe(struct pcmcia_device *link) +{ + struct orinoco_private *priv; + struct orinoco_pccard *card; + + priv = alloc_orinocodev(sizeof(*card), &link->dev, + spectrum_cs_hard_reset, + spectrum_cs_stop_firmware); + if (!priv) + return -ENOMEM; + card = priv->card; + + /* Link both structures together */ + card->p_dev = link; + link->priv = priv; + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35)) + /* Interrupt setup */ + link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; + link->irq.Handler = orinoco_interrupt; +#endif +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)) + link->conf.Attributes = 0; + link->conf.IntType = INT_MEMORY_AND_IO; +#endif + + return spectrum_cs_config(link); +} /* spectrum_cs_attach */ + +static void spectrum_cs_detach(struct pcmcia_device *link) +{ + struct orinoco_private *priv = link->priv; + + orinoco_if_del(priv); + + spectrum_cs_release(link); + + free_orinocodev(priv); +} /* spectrum_cs_detach */ + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) +static int spectrum_cs_config_check(struct pcmcia_device *p_dev, + void *priv_data) +{ + if (p_dev->config_index == 0) + return -EINVAL; + + return pcmcia_request_io(p_dev); +}; +#else +static int spectrum_cs_config_check(struct pcmcia_device *p_dev, + cistpl_cftable_entry_t *cfg, + cistpl_cftable_entry_t *dflt, + unsigned int vcc, + void *priv_data) +{ + if (cfg->index == 0) + goto next_entry; + + /* 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 (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) { + DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n", + __func__, 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 (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) { + DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n", + __func__, vcc, + dflt->vcc.param[CISTPL_POWER_VNOM] / 10000); + if (!ignore_cis_vcc) + goto next_entry; + } + } + + if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM)) + p_dev->conf.Vpp = + cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000; + else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM)) + p_dev->conf.Vpp = + dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000; + + /* Do we need to allocate an interrupt? */ + p_dev->conf.Attributes |= CONF_ENABLE_IRQ; + + /* IO window settings */ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36) + p_dev->resource[0]->end = p_dev->resource[1]->end = 0; +#else + p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0; +#endif + if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { + cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36) + p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= + pcmcia_io_cfg_data_width(io->flags); + p_dev->resource[0]->start = io->win[0].base; + p_dev->resource[0]->end = io->win[0].len; +#else + p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; + if (!(io->flags & CISTPL_IO_8BIT)) + p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16; + if (!(io->flags & CISTPL_IO_16BIT)) + p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8; + p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; + p_dev->io.BasePort1 = io->win[0].base; + p_dev->io.NumPorts1 = io->win[0].len; +#endif + if (io->nwin > 1) { +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36) + p_dev->resource[1]->flags = p_dev->resource[0]->flags; + p_dev->resource[1]->start = io->win[1].base; + p_dev->resource[1]->end = io->win[1].len; +#else + p_dev->io.Attributes2 = p_dev->io.Attributes1; + p_dev->io.BasePort2 = io->win[1].base; + p_dev->io.NumPorts2 = io->win[1].len; +#endif + } + + /* This reserves IO space but doesn't actually enable it */ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36) + if (pcmcia_request_io(p_dev) != 0) +#else + if (pcmcia_request_io(p_dev, &p_dev->io) != 0) +#endif + goto next_entry; + } + return 0; + +next_entry: + pcmcia_disable_device(p_dev); + return -ENODEV; +}; +#endif + +static int +spectrum_cs_config(struct pcmcia_device *link) +{ + struct orinoco_private *priv = link->priv; + struct hermes *hw = &priv->hw; + int ret; + void __iomem *mem; + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) + link->config_flags |= CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC | + CONF_AUTO_SET_IO | CONF_ENABLE_IRQ; + if (ignore_cis_vcc) + link->config_flags &= ~CONF_AUTO_CHECK_VCC; +#endif + ret = pcmcia_loop_config(link, spectrum_cs_config_check, NULL); + if (ret) { + if (!ignore_cis_vcc) + printk(KERN_ERR PFX "GetNextTuple(): No matching " + "CIS configuration. Maybe you need the " + "ignore_cis_vcc=1 parameter.\n"); + goto failed; + } + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36) + mem = ioport_map(link->resource[0]->start, + resource_size(link->resource[0])); +#else + mem = ioport_map(link->io.BasePort1, link->io.NumPorts1); +#endif + if (!mem) + goto failed; + + /* We initialize the hermes structure before completing PCMCIA + * configuration just in case the interrupt handler gets + * called. */ + hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING); + hw->eeprom_pda = true; + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) + ret = pcmcia_request_irq(link, orinoco_interrupt); +#else + ret = pcmcia_request_irq(link, &link->irq); +#endif + if (ret) + goto failed; + + ret = pcmcia_enable_device(link); + if (ret) + goto failed; + + /* Reset card */ + if (spectrum_cs_hard_reset(priv) != 0) + goto failed; + + /* Initialise the main driver */ + if (orinoco_init(priv) != 0) { + printk(KERN_ERR PFX "orinoco_init() failed\n"); + goto failed; + } + + /* Register an interface with the stack */ +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)) + if (orinoco_if_add(priv, link->resource[0]->start, + link->irq, NULL) != 0) { +#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) + if (orinoco_if_add(priv, link->io.BasePort1, + link->irq, NULL) != 0) { +#else + if (orinoco_if_add(priv, link->io.BasePort1, + link->irq.AssignedIRQ, NULL) != 0) { +#endif + printk(KERN_ERR PFX "orinoco_if_add() failed\n"); + goto failed; + } + + return 0; + + failed: + spectrum_cs_release(link); + return -ENODEV; +} /* spectrum_cs_config */ + +static void +spectrum_cs_release(struct pcmcia_device *link) +{ + struct orinoco_private *priv = link->priv; + unsigned long flags; + + /* We're committed to taking the device away now, so mark the + * hardware as unavailable */ + priv->hw.ops->lock_irqsave(&priv->lock, &flags); + priv->hw_unavailable++; + priv->hw.ops->unlock_irqrestore(&priv->lock, &flags); + + pcmcia_disable_device(link); + if (priv->hw.iobase) + ioport_unmap(priv->hw.iobase); +} /* spectrum_cs_release */ + + +static int +spectrum_cs_suspend(struct pcmcia_device *link) +{ + struct orinoco_private *priv = link->priv; + int err = 0; + + /* Mark the device as stopped, to block IO until later */ + orinoco_down(priv); + + return err; +} + +static int +spectrum_cs_resume(struct pcmcia_device *link) +{ + struct orinoco_private *priv = link->priv; + int err = orinoco_up(priv); + + return err; +} + + +/********************************************************************/ +/* Module initialization */ +/********************************************************************/ + +static const struct pcmcia_device_id spectrum_cs_ids[] = { + PCMCIA_DEVICE_MANF_CARD(0x026c, 0x0001), /* Symbol Spectrum24 LA4137 */ + PCMCIA_DEVICE_MANF_CARD(0x0104, 0x0001), /* Socket Communications CF */ + PCMCIA_DEVICE_PROD_ID12("Intel", "PRO/Wireless LAN PC Card", 0x816cc815, 0x6fbf459a), /* 2011B, not 2011 */ + PCMCIA_DEVICE_NULL, +}; +MODULE_DEVICE_TABLE(pcmcia, spectrum_cs_ids); + +static struct pcmcia_driver orinoco_driver = { + .owner = THIS_MODULE, +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) + .name = DRIVER_NAME, +#else + .drv = { + .name = DRIVER_NAME, + }, +#endif + .probe = spectrum_cs_probe, + .remove = spectrum_cs_detach, + .suspend = spectrum_cs_suspend, + .resume = spectrum_cs_resume, + .id_table = spectrum_cs_ids, +}; +module_pcmcia_driver(orinoco_driver); |