diff options
| -rw-r--r-- | drivers/net/ethernet/cirrus/cs89x0.c | 734 |
1 files changed, 323 insertions, 411 deletions
diff --git a/drivers/net/ethernet/cirrus/cs89x0.c b/drivers/net/ethernet/cirrus/cs89x0.c index 1d59030e7d9..41c8ac92080 100644 --- a/drivers/net/ethernet/cirrus/cs89x0.c +++ b/drivers/net/ethernet/cirrus/cs89x0.c @@ -1,105 +1,27 @@ /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0 - * driver for linux. + * driver for linux. + * Written 1996 by Russell Nelson, with reference to skeleton.c + * written 1993-1994 by Donald Becker. + * + * This software may be used and distributed according to the terms + * of the GNU General Public License, incorporated herein by reference. + * + * The author may be reached at nelson@crynwr.com, Crynwr + * Software, 521 Pleasant Valley Rd., Potsdam, NY 13676 + * + * Other contributors: + * Mike Cruse : mcruse@cti-ltd.com + * Russ Nelson + * Melody Lee : ethernet@crystal.cirrus.com + * Alan Cox + * Andrew Morton + * Oskar Schirmer : oskar@scara.com + * Deepak Saxena : dsaxena@plexity.net + * Dmitry Pervushin : dpervushin@ru.mvista.com + * Deepak Saxena : dsaxena@plexity.net + * Domenico Andreoli : cavokz@gmail.com */ -/* - Written 1996 by Russell Nelson, with reference to skeleton.c - written 1993-1994 by Donald Becker. - - This software may be used and distributed according to the terms - of the GNU General Public License, incorporated herein by reference. - - The author may be reached at nelson@crynwr.com, Crynwr - Software, 521 Pleasant Valley Rd., Potsdam, NY 13676 - - Changelog: - - Mike Cruse : mcruse@cti-ltd.com - : Changes for Linux 2.0 compatibility. - : Added dev_id parameter in net_interrupt(), - : request_irq() and free_irq(). Just NULL for now. - - Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros - : in net_open() and net_close() so kerneld would know - : that the module is in use and wouldn't eject the - : driver prematurely. - - Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c - : as an example. Disabled autoprobing in init_module(), - : not a good thing to do to other devices while Linux - : is running from all accounts. - - Russ Nelson : Jul 13 1998. Added RxOnly DMA support. - - Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility. - : email: ethernet@crystal.cirrus.com - - Alan Cox : Removed 1.2 support, added 2.1 extra counters. - - Andrew Morton : Kernel 2.3.48 - : Handle kmalloc() failures - : Other resource allocation fixes - : Add SMP locks - : Integrate Russ Nelson's ALLOW_DMA functionality back in. - : If ALLOW_DMA is true, make DMA runtime selectable - : Folded in changes from Cirrus (Melody Lee - : <klee@crystal.cirrus.com>) - : Don't call netif_wake_queue() in net_send_packet() - : Fixed an out-of-mem bug in dma_rx() - : Updated Documentation/networking/cs89x0.txt - - Andrew Morton : Kernel 2.3.99-pre1 - : Use skb_reserve to longword align IP header (two places) - : Remove a delay loop from dma_rx() - : Replace '100' with HZ - : Clean up a couple of skb API abuses - : Added 'cs89x0_dma=N' kernel boot option - : Correctly initialise lp->lock in non-module compile - - Andrew Morton : Kernel 2.3.99-pre4-1 - : MOD_INC/DEC race fix (see - : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html) - - Andrew Morton : Kernel 2.4.0-test7-pre2 - : Enhanced EEPROM support to cover more devices, - : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch - : (Jason Gunthorpe <jgg@ualberta.ca>) - - Andrew Morton : Kernel 2.4.0-test11-pre4 - : Use dev->name in request_*() (Andrey Panin) - : Fix an error-path memleak in init_module() - : Preserve return value from request_irq() - : Fix type of `media' module parm (Keith Owens) - : Use SET_MODULE_OWNER() - : Tidied up strange request_irq() abuse in net_open(). - - Andrew Morton : Kernel 2.4.3-pre1 - : Request correct number of pages for DMA (Hugh Dickens) - : Select PP_ChipID _after_ unregister_netdev in cleanup_module() - : because unregister_netdev() calls get_stats. - : Make `version[]' __initdata - : Uninlined the read/write reg/word functions. - - Oskar Schirmer : oskar@scara.com - : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=) - - Deepak Saxena : dsaxena@plexity.net - : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support - - Dmitry Pervushin : dpervushin@ru.mvista.com - : PNX010X platform support - - Deepak Saxena : dsaxena@plexity.net - : Intel IXDP2351 platform support - - Dmitry Pervushin : dpervushin@ru.mvista.com - : PNX010X platform support - - Domenico Andreoli : cavokz@gmail.com - : QQ2440 platform support - -*/ - /* * Set this to zero to disable DMA code @@ -119,14 +41,10 @@ */ #define DEBUGGING 1 -/* - Sources: - - Crynwr packet driver epktisa. - - Crystal Semiconductor data sheets. - -*/ +/* Sources: + * Crynwr packet driver epktisa. + * Crystal Semiconductor data sheets. + */ #include <linux/module.h> #include <linux/printk.h> @@ -158,21 +76,23 @@ #include "cs89x0.h" static char version[] __initdata = -"cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton\n"; + "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton\n"; #define DRV_NAME "cs89x0" /* First, a few definitions that the brave might change. - A zero-terminated list of I/O addresses to be probed. Some special flags.. - Addr & 1 = Read back the address port, look for signature and reset - the page window before probing - Addr & 3 = Reset the page window and probe - The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space, - but it is possible that a Cirrus board could be plugged into the ISA - slots. */ + * A zero-terminated list of I/O addresses to be probed. Some special flags.. + * Addr & 1 = Read back the address port, look for signature and reset + * the page window before probing + * Addr & 3 = Reset the page window and probe + * The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space, + * but it is possible that a Cirrus board could be plugged into the ISA + * slots. + */ /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps - them to system IRQ numbers. This mapping is card specific and is set to - the configuration of the Cirrus Eval board for this chip. */ + * them to system IRQ numbers. This mapping is card specific and is set to + * the configuration of the Cirrus Eval board for this chip. + */ #if defined(CONFIG_MACH_IXDP2351) #define CS89x0_NONISA_IRQ static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0}; @@ -184,8 +104,8 @@ static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0}; #else #ifndef CONFIG_CS89x0_PLATFORM static unsigned int netcard_portlist[] __used __initdata = - { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0}; -static unsigned int cs8900_irq_map[] = {10,11,12,5}; +{ 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0}; +static unsigned int cs8900_irq_map[] = {10, 11, 12, 5}; #endif #endif @@ -268,7 +188,7 @@ static int g_cs89x0_dma; static int __init dma_fn(char *str) { - g_cs89x0_dma = simple_strtol(str,NULL,0); + g_cs89x0_dma = simple_strtol(str, NULL, 0); return 1; } @@ -362,10 +282,11 @@ static int __init wait_eeprom_ready(struct net_device *dev) { int timeout = jiffies; - /* check to see if the EEPROM is ready, a timeout is used - - just in case EEPROM is ready when SI_BUSY in the - PP_SelfST is clear */ - while(readreg(dev, PP_SelfST) & SI_BUSY) + /* check to see if the EEPROM is ready, + * a timeout is used just in case EEPROM is ready when + * SI_BUSY in the PP_SelfST is clear + */ + while (readreg(dev, PP_SelfST) & SI_BUSY) if (jiffies - timeout >= 40) return -1; return 0; @@ -376,7 +297,7 @@ get_eeprom_data(struct net_device *dev, int off, int len, int *buffer) { int i; - if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len); + if (net_debug > 3) printk("EEPROM data from %x for %x:\n", off, len); for (i = 0; i < len; i++) { if (wait_eeprom_ready(dev) < 0) return -1; /* Now send the EEPROM read command and EEPROM location to read */ @@ -386,7 +307,7 @@ get_eeprom_data(struct net_device *dev, int off, int len, int *buffer) if (net_debug > 3) printk("%04x ", buffer[i]); } if (net_debug > 3) printk("\n"); - return 0; + return 0; } static int __init @@ -420,10 +341,10 @@ static const struct net_device_ops net_ops = { .ndo_open = net_open, .ndo_stop = net_close, .ndo_tx_timeout = net_timeout, - .ndo_start_xmit = net_send_packet, + .ndo_start_xmit = net_send_packet, .ndo_get_stats = net_get_stats, .ndo_set_rx_mode = set_multicast_list, - .ndo_set_mac_address = set_mac_address, + .ndo_set_mac_address = set_mac_address, #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = net_poll_controller, #endif @@ -431,12 +352,12 @@ static const struct net_device_ops net_ops = { .ndo_validate_addr = eth_validate_addr, }; -/* This is the real probe routine. Linux has a history of friendly device - probes on the ISA bus. A good device probes avoids doing writes, and - verifies that the correct device exists and functions. - Return 0 on success. +/* This is the real probe routine. + * Linux has a history of friendly device probes on the ISA bus. + * A good device probes avoids doing writes, and + * verifies that the correct device exists and functions. + * Return 0 on success. */ - static int __init cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular) { @@ -462,7 +383,7 @@ cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular) #endif lp->force = g_cs89x0_media__force; #endif - } + } printk(KERN_DEBUG "PP_addr at %p[%x]: 0x%x\n", ioaddr, ADD_PORT, ioread16(ioaddr + ADD_PORT)); @@ -471,9 +392,9 @@ cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular) tmp = ioread16(ioaddr + DATA_PORT); if (tmp != CHIP_EISA_ID_SIG) { printk(KERN_DEBUG "%s: incorrect signature at %p[%x]: 0x%x!=" - CHIP_EISA_ID_SIG_STR "\n", - dev->name, ioaddr, DATA_PORT, tmp); - retval = -ENODEV; + CHIP_EISA_ID_SIG_STR "\n", + dev->name, ioaddr, DATA_PORT, tmp); + retval = -ENODEV; goto out1; } @@ -481,11 +402,11 @@ cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular) /* get the chip type */ rev_type = readreg(dev, PRODUCT_ID_ADD); - lp->chip_type = rev_type &~ REVISON_BITS; + lp->chip_type = rev_type & ~REVISON_BITS; lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A'; /* Check the chip type and revision in order to set the correct send command - CS8920 revision C and CS8900 revision F can use the faster send. */ + CS8920 revision C and CS8900 revision F can use the faster send. */ lp->send_cmd = TX_AFTER_381; if (lp->chip_type == CS8900 && lp->chip_revision >= 'F') lp->send_cmd = TX_NOW; @@ -497,45 +418,46 @@ cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular) printk(KERN_INFO "%s: cs89%c0%s rev %c found at %p ", dev->name, - lp->chip_type==CS8900?'0':'2', - lp->chip_type==CS8920M?"M":"", + lp->chip_type == CS8900 ? '0' : '2', + lp->chip_type == CS8920M ? "M" : "", lp->chip_revision, lp->virt_addr); reset_chip(dev); - /* Here we read the current configuration of the chip. If there - is no Extended EEPROM then the idea is to not disturb the chip - configuration, it should have been correctly setup by automatic - EEPROM read on reset. So, if the chip says it read the EEPROM - the driver will always do *something* instead of complain that - adapter_cnf is 0. */ - - - if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) == - (EEPROM_OK|EEPROM_PRESENT)) { - /* Load the MAC. */ - for (i=0; i < ETH_ALEN/2; i++) { - unsigned int Addr; - Addr = readreg(dev, PP_IA+i*2); - dev->dev_addr[i*2] = Addr & 0xFF; - dev->dev_addr[i*2+1] = Addr >> 8; + /* Here we read the current configuration of the chip. + * If there is no Extended EEPROM then the idea is to not disturb + * the chip configuration, it should have been correctly setup by + * automatic EEPROM read on reset. So, if the chip says it read + * the EEPROM the driver will always do *something* instead of + * complain that adapter_cnf is 0. + */ + + if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) == + (EEPROM_OK|EEPROM_PRESENT)) { + /* Load the MAC. */ + for (i = 0; i < ETH_ALEN / 2; i++) { + unsigned int Addr; + Addr = readreg(dev, PP_IA + i * 2); + dev->dev_addr[i * 2] = Addr & 0xFF; + dev->dev_addr[i * 2 + 1] = Addr >> 8; } - /* Load the Adapter Configuration. - Note: Barring any more specific information from some - other source (ie EEPROM+Schematics), we would not know - how to operate a 10Base2 interface on the AUI port. - However, since we do read the status of HCB1 and use - settings that always result in calls to control_dc_dc(dev,0) - a BNC interface should work if the enable pin - (dc/dc converter) is on HCB1. It will be called AUI - however. */ + /* Load the Adapter Configuration. + * Note: Barring any more specific information from some + * other source (ie EEPROM+Schematics), we would not know + * how to operate a 10Base2 interface on the AUI port. + * However, since we do read the status of HCB1 and use + * settings that always result in calls to control_dc_dc(dev,0) + * a BNC interface should work if the enable pin + * (dc/dc converter) is on HCB1. + * It will be called AUI however. + */ lp->adapter_cnf = 0; i = readreg(dev, PP_LineCTL); /* Preserve the setting of the HCB1 pin. */ - if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL)) + if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL)) lp->adapter_cnf |= A_CNF_DC_DC_POLARITY; /* Save the sqelch bit */ if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH) @@ -549,92 +471,94 @@ cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular) /* Check if the card is in Auto mode. */ if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET) lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T | - A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO; + A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO; if (net_debug > 1) printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n", - dev->name, i, lp->adapter_cnf); + dev->name, i, lp->adapter_cnf); /* IRQ. Other chips already probe, see below. */ if (lp->chip_type == CS8900) lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK; - printk( "[Cirrus EEPROM] "); + printk("[Cirrus EEPROM] "); } - printk("\n"); + printk("\n"); /* First check to see if an EEPROM is attached. */ if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0) printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n"); - else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) { + else if (get_eeprom_data(dev, START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) { printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n"); - } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) { + } else if (get_eeprom_cksum(START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) { /* Check if the chip was able to read its own configuration starting at 0 in the EEPROM*/ if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) != - (EEPROM_OK|EEPROM_PRESENT)) - printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n"); + (EEPROM_OK | EEPROM_PRESENT)) + printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n"); - } else { + } else { /* This reads an extended EEPROM that is not documented - in the CS8900 datasheet. */ - - /* get transmission control word but keep the autonegotiation bits */ - if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2]; - /* Store adapter configuration */ - if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2]; - /* Store ISA configuration */ - lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2]; - dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8; - - /* eeprom_buff has 32-bit ints, so we can't just memcpy it */ - /* store the initial memory base address */ - for (i = 0; i < ETH_ALEN/2; i++) { - dev->dev_addr[i*2] = eeprom_buff[i]; - dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8; - } + * in the CS8900 datasheet. + */ + + /* get transmission control word but keep the autonegotiation bits */ + if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2]; + /* Store adapter configuration */ + if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2]; + /* Store ISA configuration */ + lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2]; + dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8; + + /* eeprom_buff has 32-bit ints, so we can't just memcpy it */ + /* store the initial memory base address */ + for (i = 0; i < ETH_ALEN / 2; i++) { + dev->dev_addr[i * 2] = eeprom_buff[i]; + dev->dev_addr[i * 2 + 1] = eeprom_buff[i] >> 8; + } if (net_debug > 1) printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n", - dev->name, lp->adapter_cnf); - } + dev->name, lp->adapter_cnf); + } - /* allow them to force multiple transceivers. If they force multiple, autosense */ - { + /* allow them to force multiple transceivers. If they force multiple, autosense */ + { int count = 0; if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; } - if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; } + if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; } if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; } if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; } else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; } else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; } else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; } - } + } if (net_debug > 1) printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n", - dev->name, lp->force, lp->adapter_cnf); + dev->name, lp->force, lp->adapter_cnf); - /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */ + /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */ - /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */ + /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */ - /* FIXME: we don't set the Ethernet address on the command line. Use - ifconfig IFACE hw ether AABBCCDDEEFF */ + /* FIXME: we don't set the Ethernet address on the command line. Use + * ifconfig IFACE hw ether AABBCCDDEEFF + */ printk(KERN_INFO "cs89x0 media %s%s%s", - (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"", - (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"", - (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":""); + (lp->adapter_cnf & A_CNF_10B_T) ? "RJ-45," : "", + (lp->adapter_cnf & A_CNF_AUI) ? "AUI," : "", + (lp->adapter_cnf & A_CNF_10B_2) ? "BNC," : ""); lp->irq_map = 0xffff; /* If this is a CS8900 then no pnp soft */ if (lp->chip_type != CS8900 && /* Check if the ISA IRQ has been set */ - (i = readreg(dev, PP_CS8920_ISAINT) & 0xff, - (i != 0 && i < CS8920_NO_INTS))) { + (i = readreg(dev, PP_CS8920_ISAINT) & 0xff, + (i != 0 && i < CS8920_NO_INTS))) { if (!dev->irq) dev->irq = i; } else { @@ -642,7 +566,7 @@ cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular) #ifndef CONFIG_CS89x0_PLATFORM if (lp->chip_type == CS8900) { #ifdef CS89x0_NONISA_IRQ - i = cs8900_irq_map[0]; + i = cs8900_irq_map[0]; #else /* Translate the IRQ using the IRQ mapping table. */ if (i >= ARRAY_SIZE(cs8900_irq_map)) @@ -655,10 +579,10 @@ cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular) int irq_map_buff[IRQ_MAP_LEN/2]; if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA, - IRQ_MAP_LEN/2, + IRQ_MAP_LEN / 2, irq_map_buff) >= 0) { if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT) - lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8); + lp->irq_map = (irq_map_buff[0] >> 8) | (irq_map_buff[1] << 8); } #endif } @@ -730,9 +654,10 @@ cs89x0_ioport_probe(struct net_device *dev, unsigned long ioport, int modular) } /* if they give us an odd I/O address, then do ONE write to - the address port, to get it back to address zero, where we - expect to find the EISA signature word. An IO with a base of 0x3 - will skip the test for the ADD_PORT. */ + * the address port, to get it back to address zero, where we + * expect to find the EISA signature word. An IO with a base of 0x3 + * will skip the test for the ADD_PORT. + */ if (ioport & 1) { if (net_debug > 1) printk(KERN_INFO "%s: odd ioaddr 0x%lx\n", @@ -742,8 +667,8 @@ cs89x0_ioport_probe(struct net_device *dev, unsigned long ioport, int modular) if ((ioread16(io_mem + ADD_PORT) & ADD_MASK) != ADD_SIG) { printk(KERN_ERR "%s: bad signature 0x%x\n", - dev->name, - ioread16(io_mem + ADD_PORT)); + dev->name, + ioread16(io_mem + ADD_PORT)); ret = -ENODEV; goto unmap; } @@ -762,12 +687,12 @@ out: #ifndef MODULE /* Check for a network adaptor of this type, and return '0' iff one exists. - If dev->base_addr == 0, probe all likely locations. - If dev->base_addr == 1, always return failure. - If dev->base_addr == 2, allocate space for the device and return success - (detachable devices only). - Return 0 on success. - */ + * If dev->base_addr == 0, probe all likely locations. + * If dev->base_addr == 1, always return failure. + * If dev->base_addr == 2, allocate space for the device and return success + * (detachable devices only). + * Return 0 on success. + */ struct net_device * __init cs89x0_probe(int unit) { @@ -814,7 +739,7 @@ out: /********************************* * This page contains DMA routines -**********************************/ + *********************************/ #if ALLOW_DMA @@ -882,7 +807,7 @@ dma_bufcfg(struct net_device *dev) { struct net_local *lp = netdev_priv(dev); if (lp->use_dma) - return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0; + return (lp->isa_config & ANY_ISA_DMA) ? RX_DMA_ENBL : 0; else return 0; } @@ -916,8 +841,8 @@ dma_rx(struct net_device *dev) length = bp[2] + (bp[3]<<8); bp += 4; if (net_debug > 5) { - printk( "%s: receiving DMA packet at %lx, status %x, length %x\n", - dev->name, (unsigned long)bp, status, length); + printk("%s: receiving DMA packet at %lx, status %x, length %x\n", + dev->name, (unsigned long)bp, status, length); } if ((status & RX_OK) == 0) { count_rx_errors(status, dev); @@ -942,22 +867,22 @@ skip_this_frame: if (bp + length > lp->end_dma_buff) { int semi_cnt = lp->end_dma_buff - bp; - memcpy(skb_put(skb,semi_cnt), bp, semi_cnt); - memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff, + memcpy(skb_put(skb, semi_cnt), bp, semi_cnt); + memcpy(skb_put(skb, length - semi_cnt), lp->dma_buff, length - semi_cnt); } else { - memcpy(skb_put(skb,length), bp, length); + memcpy(skb_put(skb, length), bp, length); } bp += (length + 3) & ~3; if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024; lp->rx_dma_ptr = bp; if (net_debug > 3) { - printk( "%s: received %d byte DMA packet of type %x\n", - dev->name, length, - (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]); + printk("%s: received %d byte DMA packet of type %x\n", + dev->name, length, + (skb->data[ETH_ALEN + ETH_ALEN] << 8) | skb->data[ETH_ALEN + ETH_ALEN + 1]); } - skb->protocol=eth_type_trans(skb,dev); + skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); dev->stats.rx_packets++; dev->stats.rx_bytes += length; @@ -995,7 +920,7 @@ static void __init reset_chip(struct net_device *dev) /* Wait until the chip is reset */ reset_start_time = jiffies; - while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2) + while ((readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2) ; #endif /* !CONFIG_MACH_MX31ADS */ } @@ -1038,38 +963,38 @@ detect_tp(struct net_device *dev) if (net_debug > 1) printk("%s: Attempting TP\n", dev->name); - /* If connected to another full duplex capable 10-Base-T card the link pulses - seem to be lost when the auto detect bit in the LineCTL is set. - To overcome this the auto detect bit will be cleared whilst testing the - 10-Base-T interface. This would not be necessary for the sparrow chip but - is simpler to do it anyway. */ - writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY); + /* If connected to another full duplex capable 10-Base-T card the link pulses + seem to be lost when the auto detect bit in the LineCTL is set. + To overcome this the auto detect bit will be cleared whilst testing the + 10-Base-T interface. This would not be necessary for the sparrow chip but + is simpler to do it anyway. */ + writereg(dev, PP_LineCTL, lp->linectl & ~AUI_ONLY); control_dc_dc(dev, 0); - /* Delay for the hardware to work out if the TP cable is present - 150ms */ + /* Delay for the hardware to work out if the TP cable is present - 150ms */ for (timenow = jiffies; jiffies - timenow < 15; ) - ; + ; if ((readreg(dev, PP_LineST) & LINK_OK) == 0) return DETECTED_NONE; if (lp->chip_type == CS8900) { - switch (lp->force & 0xf0) { + switch (lp->force & 0xf0) { #if 0 - case FORCE_AUTO: - printk("%s: cs8900 doesn't autonegotiate\n",dev->name); - return DETECTED_NONE; + case FORCE_AUTO: + printk("%s: cs8900 doesn't autonegotiate\n", dev->name); + return DETECTED_NONE; #endif - /* CS8900 doesn't support AUTO, change to HALF*/ - case FORCE_AUTO: + /* CS8900 doesn't support AUTO, change to HALF*/ + case FORCE_AUTO: lp->force &= ~FORCE_AUTO; - lp->force |= FORCE_HALF; + lp->force |= FORCE_HALF; break; case FORCE_HALF: break; - case FORCE_FULL: + case FORCE_FULL: writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900); break; - } + } fdx = readreg(dev, PP_TestCTL) & FDX_8900; } else { switch (lp->force & 0xf0) { @@ -1082,12 +1007,12 @@ detect_tp(struct net_device *dev) case FORCE_FULL: lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX; break; - } + } writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK); if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) { - printk(KERN_INFO "%s: negotiating duplex...\n",dev->name); + printk(KERN_INFO "%s: negotiating duplex...\n", dev->name); while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) { if (jiffies - timenow > 4000) { printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n"); @@ -1109,15 +1034,15 @@ send_test_pkt(struct net_device *dev) { struct net_local *lp = netdev_priv(dev); char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0, - 0, 46, /* A 46 in network order */ - 0, 0, /* DSAP=0 & SSAP=0 fields */ - 0xf3, 0 /* Control (Test Req + P bit set) */ }; + 0, 46, /* A 46 in network order */ + 0, 0, /* DSAP=0 & SSAP=0 fields */ + 0xf3, 0 /* Control (Test Req + P bit set) */ }; long timenow = jiffies; writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON); - memcpy(test_packet, dev->dev_addr, ETH_ALEN); - memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN); + memcpy(test_packet, dev->dev_addr, ETH_ALEN); + memcpy(test_packet + ETH_ALEN, dev->dev_addr, ETH_ALEN); iowrite16(TX_AFTER_ALL, lp->virt_addr + TX_CMD_PORT); iowrite16(ETH_ZLEN, lp->virt_addr + TX_LEN_PORT); @@ -1135,11 +1060,11 @@ send_test_pkt(struct net_device *dev) if (net_debug > 1) printk("Sending test packet "); /* wait a couple of jiffies for packet to be received */ for (timenow = jiffies; jiffies - timenow < 3; ) - ; - if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) { - if (net_debug > 1) printk("succeeded\n"); - return 1; - } + ; + if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) { + if (net_debug > 1) printk("succeeded\n"); + return 1; + } if (net_debug > 1) printk("failed\n"); return 0; } @@ -1153,7 +1078,7 @@ detect_aui(struct net_device *dev) if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name); control_dc_dc(dev, 0); - writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY); + writereg(dev, PP_LineCTL, (lp->linectl & ~AUTO_AUI_10BASET) | AUI_ONLY); if (send_test_pkt(dev)) return DETECTED_AUI; @@ -1169,7 +1094,7 @@ detect_bnc(struct net_device *dev) if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name); control_dc_dc(dev, 1); - writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY); + writereg(dev, PP_LineCTL, (lp->linectl & ~AUTO_AUI_10BASET) | AUI_ONLY); if (send_test_pkt(dev)) return DETECTED_BNC; @@ -1208,7 +1133,7 @@ write_irq(struct net_device *dev, int chip_type, int irq) This routine should set everything up anew at each open, even registers that "should" only need to be set once at boot, so that there is non-reboot way to recover if something goes wrong. - */ +*/ /* AKPM: do we need to do any locking here? */ @@ -1224,7 +1149,7 @@ net_open(struct net_device *dev) /* Allow interrupts to be generated by the chip */ /* Cirrus' release had this: */ #if 0 - writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ ); + writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) | ENABLE_IRQ); #endif /* And 2.3.47 had this: */ writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); @@ -1252,13 +1177,13 @@ net_open(struct net_device *dev) #if !defined(CS89x0_NONISA_IRQ) && !defined(CONFIG_CS89x0_PLATFORM) if (((1 << dev->irq) & lp->irq_map) == 0) { printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n", - dev->name, dev->irq, lp->irq_map); + dev->name, dev->irq, lp->irq_map); ret = -EAGAIN; goto bad_out; } #endif /* FIXME: Cirrus' release had this: */ - writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ ); + writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ); /* And 2.3.47 had this: */ #if 0 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON); @@ -1276,17 +1201,17 @@ net_open(struct net_device *dev) if (lp->isa_config & ANY_ISA_DMA) { unsigned long flags; lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL, - get_order(lp->dmasize * 1024)); + get_order(lp->dmasize * 1024)); if (!lp->dma_buff) { printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize); goto release_irq; } if (net_debug > 1) { - printk( "%s: dma %lx %lx\n", - dev->name, - (unsigned long)lp->dma_buff, - (unsigned long)isa_virt_to_bus(lp->dma_buff)); + printk("%s: dma %lx %lx\n", + dev->name, + (unsigned long)lp->dma_buff, + (unsigned long)isa_virt_to_bus(lp->dma_buff)); } if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS || !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) { @@ -1314,64 +1239,64 @@ net_open(struct net_device *dev) #endif /* ALLOW_DMA */ /* set the Ethernet address */ - for (i=0; i < ETH_ALEN/2; i++) - writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8)); + for (i = 0; i < ETH_ALEN / 2; i++) + writereg(dev, PP_IA + i * 2, dev->dev_addr[i * 2] | (dev->dev_addr[i * 2 + 1] << 8)); /* while we're testing the interface, leave interrupts disabled */ writereg(dev, PP_BusCTL, MEMORY_ON); /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */ if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH)) - lp->linectl = LOW_RX_SQUELCH; + lp->linectl = LOW_RX_SQUELCH; else - lp->linectl = 0; + lp->linectl = 0; - /* check to make sure that they have the "right" hardware available */ - switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) { + /* check to make sure that they have the "right" hardware available */ + switch (lp->adapter_cnf & A_CNF_MEDIA_TYPE) { case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break; case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break; case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break; - default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2); - } - if (!result) { - printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name); + default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2); + } + if (!result) { + printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name); release_dma: #if ALLOW_DMA free_dma(dev->dma); release_irq: release_dma_buff(lp); #endif - writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON)); - free_irq(dev->irq, dev); + writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON)); + free_irq(dev->irq, dev); ret = -EAGAIN; goto bad_out; } - /* set the hardware to the configured choice */ - switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) { + /* set the hardware to the configured choice */ + switch (lp->adapter_cnf & A_CNF_MEDIA_TYPE) { case A_CNF_MEDIA_10B_T: - result = detect_tp(dev); - if (result==DETECTED_NONE) { - printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name); - if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ - result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */ - } + result = detect_tp(dev); + if (result == DETECTED_NONE) { + printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name); + if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ + result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */ + } break; case A_CNF_MEDIA_AUI: - result = detect_aui(dev); - if (result==DETECTED_NONE) { - printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name); - if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ - result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */ - } + result = detect_aui(dev); + if (result == DETECTED_NONE) { + printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name); + if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ + result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */ + } break; case A_CNF_MEDIA_10B_2: - result = detect_bnc(dev); - if (result==DETECTED_NONE) { - printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name); - if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ - result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */ - } + result = detect_bnc(dev); + if (result == DETECTED_NONE) { + printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name); + if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */ + result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */ + } break; case A_CNF_MEDIA_AUTO: writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET); @@ -1387,7 +1312,7 @@ release_irq: printk(KERN_ERR "%s: no media detected\n", dev->name); goto release_dma; } - switch(result) { + switch (result) { case DETECTED_NONE: printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name); goto release_dma; @@ -1422,22 +1347,22 @@ release_irq: writereg(dev, PP_RxCFG, lp->curr_rx_cfg); writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL | - TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL); + TX_LATE_COL_ENBL |