11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds 31da177e4SLinus Torvalds he.c 41da177e4SLinus Torvalds 51da177e4SLinus Torvalds ForeRunnerHE ATM Adapter driver for ATM on Linux 61da177e4SLinus Torvalds Copyright (C) 1999-2001 Naval Research Laboratory 71da177e4SLinus Torvalds 81da177e4SLinus Torvalds This library is free software; you can redistribute it and/or 91da177e4SLinus Torvalds modify it under the terms of the GNU Lesser General Public 101da177e4SLinus Torvalds License as published by the Free Software Foundation; either 111da177e4SLinus Torvalds version 2.1 of the License, or (at your option) any later version. 121da177e4SLinus Torvalds 131da177e4SLinus Torvalds This library is distributed in the hope that it will be useful, 141da177e4SLinus Torvalds but WITHOUT ANY WARRANTY; without even the implied warranty of 151da177e4SLinus Torvalds MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 161da177e4SLinus Torvalds Lesser General Public License for more details. 171da177e4SLinus Torvalds 181da177e4SLinus Torvalds You should have received a copy of the GNU Lesser General Public 191da177e4SLinus Torvalds License along with this library; if not, write to the Free Software 201da177e4SLinus Torvalds Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 211da177e4SLinus Torvalds 221da177e4SLinus Torvalds */ 231da177e4SLinus Torvalds 241da177e4SLinus Torvalds /* 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds he.c 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds ForeRunnerHE ATM Adapter driver for ATM on Linux 291da177e4SLinus Torvalds Copyright (C) 1999-2001 Naval Research Laboratory 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds Permission to use, copy, modify and distribute this software and its 321da177e4SLinus Torvalds documentation is hereby granted, provided that both the copyright 331da177e4SLinus Torvalds notice and this permission notice appear in all copies of the software, 341da177e4SLinus Torvalds derivative works or modified versions, and any portions thereof, and 351da177e4SLinus Torvalds that both notices appear in supporting documentation. 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds NRL ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION AND 381da177e4SLinus Torvalds DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER 391da177e4SLinus Torvalds RESULTING FROM THE USE OF THIS SOFTWARE. 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds This driver was written using the "Programmer's Reference Manual for 421da177e4SLinus Torvalds ForeRunnerHE(tm)", MANU0361-01 - Rev. A, 08/21/98. 431da177e4SLinus Torvalds 441da177e4SLinus Torvalds AUTHORS: 451da177e4SLinus Torvalds chas williams <chas@cmf.nrl.navy.mil> 461da177e4SLinus Torvalds eric kinzie <ekinzie@cmf.nrl.navy.mil> 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds NOTES: 491da177e4SLinus Torvalds 4096 supported 'connections' 501da177e4SLinus Torvalds group 0 is used for all traffic 511da177e4SLinus Torvalds interrupt queue 0 is used for all interrupts 521da177e4SLinus Torvalds aal0 support (based on work from ulrich.u.muller@nokia.com) 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds */ 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds #include <linux/module.h> 571da177e4SLinus Torvalds #include <linux/kernel.h> 581da177e4SLinus Torvalds #include <linux/skbuff.h> 591da177e4SLinus Torvalds #include <linux/pci.h> 601da177e4SLinus Torvalds #include <linux/errno.h> 611da177e4SLinus Torvalds #include <linux/types.h> 621da177e4SLinus Torvalds #include <linux/string.h> 631da177e4SLinus Torvalds #include <linux/delay.h> 641da177e4SLinus Torvalds #include <linux/init.h> 651da177e4SLinus Torvalds #include <linux/mm.h> 661da177e4SLinus Torvalds #include <linux/sched.h> 671da177e4SLinus Torvalds #include <linux/timer.h> 681da177e4SLinus Torvalds #include <linux/interrupt.h> 69e5695f08Schas williams #include <linux/dma-mapping.h> 70e623d625Schas williams - CONTRACTOR #include <linux/bitmap.h> 715a0e3ad6STejun Heo #include <linux/slab.h> 721da177e4SLinus Torvalds #include <asm/io.h> 731da177e4SLinus Torvalds #include <asm/byteorder.h> 741da177e4SLinus Torvalds #include <asm/uaccess.h> 751da177e4SLinus Torvalds 761da177e4SLinus Torvalds #include <linux/atmdev.h> 771da177e4SLinus Torvalds #include <linux/atm.h> 781da177e4SLinus Torvalds #include <linux/sonet.h> 791da177e4SLinus Torvalds 801da177e4SLinus Torvalds #undef USE_SCATTERGATHER 811da177e4SLinus Torvalds #undef USE_CHECKSUM_HW /* still confused about this */ 821da177e4SLinus Torvalds /* #undef HE_DEBUG */ 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds #include "he.h" 851da177e4SLinus Torvalds #include "suni.h" 861da177e4SLinus Torvalds #include <linux/atm_he.h> 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds #define hprintk(fmt,args...) printk(KERN_ERR DEV_LABEL "%d: " fmt, he_dev->number , ##args) 891da177e4SLinus Torvalds 901da177e4SLinus Torvalds #ifdef HE_DEBUG 911da177e4SLinus Torvalds #define HPRINTK(fmt,args...) printk(KERN_DEBUG DEV_LABEL "%d: " fmt, he_dev->number , ##args) 921da177e4SLinus Torvalds #else /* !HE_DEBUG */ 931da177e4SLinus Torvalds #define HPRINTK(fmt,args...) do { } while (0) 941da177e4SLinus Torvalds #endif /* HE_DEBUG */ 951da177e4SLinus Torvalds 961da177e4SLinus Torvalds /* declarations */ 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds static int he_open(struct atm_vcc *vcc); 991da177e4SLinus Torvalds static void he_close(struct atm_vcc *vcc); 1001da177e4SLinus Torvalds static int he_send(struct atm_vcc *vcc, struct sk_buff *skb); 1011da177e4SLinus Torvalds static int he_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg); 1027d12e780SDavid Howells static irqreturn_t he_irq_handler(int irq, void *dev_id); 1031da177e4SLinus Torvalds static void he_tasklet(unsigned long data); 1041da177e4SLinus Torvalds static int he_proc_read(struct atm_dev *dev,loff_t *pos,char *page); 1051da177e4SLinus Torvalds static int he_start(struct atm_dev *dev); 1061da177e4SLinus Torvalds static void he_stop(struct he_dev *dev); 1071da177e4SLinus Torvalds static void he_phy_put(struct atm_dev *, unsigned char, unsigned long); 1081da177e4SLinus Torvalds static unsigned char he_phy_get(struct atm_dev *, unsigned long); 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds static u8 read_prom_byte(struct he_dev *he_dev, int addr); 1111da177e4SLinus Torvalds 1121da177e4SLinus Torvalds /* globals */ 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds static struct he_dev *he_devs; 11590ab5ee9SRusty Russell static bool disable64; 1161da177e4SLinus Torvalds static short nvpibits = -1; 1171da177e4SLinus Torvalds static short nvcibits = -1; 1181da177e4SLinus Torvalds static short rx_skb_reserve = 16; 11990ab5ee9SRusty Russell static bool irq_coalesce = 1; 12090ab5ee9SRusty Russell static bool sdh = 0; 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvalds /* Read from EEPROM = 0000 0011b */ 1231da177e4SLinus Torvalds static unsigned int readtab[] = { 1241da177e4SLinus Torvalds CS_HIGH | CLK_HIGH, 1251da177e4SLinus Torvalds CS_LOW | CLK_LOW, 1261da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1271da177e4SLinus Torvalds CLK_LOW, 1281da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1291da177e4SLinus Torvalds CLK_LOW, 1301da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1311da177e4SLinus Torvalds CLK_LOW, 1321da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1331da177e4SLinus Torvalds CLK_LOW, 1341da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1351da177e4SLinus Torvalds CLK_LOW, 1361da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1371da177e4SLinus Torvalds CLK_LOW | SI_HIGH, 1381da177e4SLinus Torvalds CLK_HIGH | SI_HIGH, /* 1 */ 1391da177e4SLinus Torvalds CLK_LOW | SI_HIGH, 1401da177e4SLinus Torvalds CLK_HIGH | SI_HIGH /* 1 */ 1411da177e4SLinus Torvalds }; 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds /* Clock to read from/write to the EEPROM */ 1441da177e4SLinus Torvalds static unsigned int clocktab[] = { 1451da177e4SLinus Torvalds CLK_LOW, 1461da177e4SLinus Torvalds CLK_HIGH, 1471da177e4SLinus Torvalds CLK_LOW, 1481da177e4SLinus Torvalds CLK_HIGH, 1491da177e4SLinus Torvalds CLK_LOW, 1501da177e4SLinus Torvalds CLK_HIGH, 1511da177e4SLinus Torvalds CLK_LOW, 1521da177e4SLinus Torvalds CLK_HIGH, 1531da177e4SLinus Torvalds CLK_LOW, 1541da177e4SLinus Torvalds CLK_HIGH, 1551da177e4SLinus Torvalds CLK_LOW, 1561da177e4SLinus Torvalds CLK_HIGH, 1571da177e4SLinus Torvalds CLK_LOW, 1581da177e4SLinus Torvalds CLK_HIGH, 1591da177e4SLinus Torvalds CLK_LOW, 1601da177e4SLinus Torvalds CLK_HIGH, 1611da177e4SLinus Torvalds CLK_LOW 1621da177e4SLinus Torvalds }; 1631da177e4SLinus Torvalds 1641da177e4SLinus Torvalds static struct atmdev_ops he_ops = 1651da177e4SLinus Torvalds { 1661da177e4SLinus Torvalds .open = he_open, 1671da177e4SLinus Torvalds .close = he_close, 1681da177e4SLinus Torvalds .ioctl = he_ioctl, 1691da177e4SLinus Torvalds .send = he_send, 1701da177e4SLinus Torvalds .phy_put = he_phy_put, 1711da177e4SLinus Torvalds .phy_get = he_phy_get, 1721da177e4SLinus Torvalds .proc_read = he_proc_read, 1731da177e4SLinus Torvalds .owner = THIS_MODULE 1741da177e4SLinus Torvalds }; 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds #define he_writel(dev, val, reg) do { writel(val, (dev)->membase + (reg)); wmb(); } while (0) 1771da177e4SLinus Torvalds #define he_readl(dev, reg) readl((dev)->membase + (reg)) 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds /* section 2.12 connection memory access */ 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds static __inline__ void 1821da177e4SLinus Torvalds he_writel_internal(struct he_dev *he_dev, unsigned val, unsigned addr, 1831da177e4SLinus Torvalds unsigned flags) 1841da177e4SLinus Torvalds { 1851da177e4SLinus Torvalds he_writel(he_dev, val, CON_DAT); 1861da177e4SLinus Torvalds (void) he_readl(he_dev, CON_DAT); /* flush posted writes */ 1871da177e4SLinus Torvalds he_writel(he_dev, flags | CON_CTL_WRITE | CON_CTL_ADDR(addr), CON_CTL); 1881da177e4SLinus Torvalds while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY); 1891da177e4SLinus Torvalds } 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds #define he_writel_rcm(dev, val, reg) \ 1921da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_RCM) 1931da177e4SLinus Torvalds 1941da177e4SLinus Torvalds #define he_writel_tcm(dev, val, reg) \ 1951da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_TCM) 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds #define he_writel_mbox(dev, val, reg) \ 1981da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_MBOX) 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds static unsigned 2011da177e4SLinus Torvalds he_readl_internal(struct he_dev *he_dev, unsigned addr, unsigned flags) 2021da177e4SLinus Torvalds { 2031da177e4SLinus Torvalds he_writel(he_dev, flags | CON_CTL_READ | CON_CTL_ADDR(addr), CON_CTL); 2041da177e4SLinus Torvalds while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY); 2051da177e4SLinus Torvalds return he_readl(he_dev, CON_DAT); 2061da177e4SLinus Torvalds } 2071da177e4SLinus Torvalds 2081da177e4SLinus Torvalds #define he_readl_rcm(dev, reg) \ 2091da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_RCM) 2101da177e4SLinus Torvalds 2111da177e4SLinus Torvalds #define he_readl_tcm(dev, reg) \ 2121da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_TCM) 2131da177e4SLinus Torvalds 2141da177e4SLinus Torvalds #define he_readl_mbox(dev, reg) \ 2151da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_MBOX) 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds /* figure 2.2 connection id */ 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds #define he_mkcid(dev, vpi, vci) (((vpi << (dev)->vcibits) | vci) & 0x1fff) 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds /* 2.5.1 per connection transmit state registers */ 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds #define he_writel_tsr0(dev, val, cid) \ 2251da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 0) 2261da177e4SLinus Torvalds #define he_readl_tsr0(dev, cid) \ 2271da177e4SLinus Torvalds he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 0) 2281da177e4SLinus Torvalds 2291da177e4SLinus Torvalds #define he_writel_tsr1(dev, val, cid) \ 2301da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 1) 2311da177e4SLinus Torvalds 2321da177e4SLinus Torvalds #define he_writel_tsr2(dev, val, cid) \ 2331da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 2) 2341da177e4SLinus Torvalds 2351da177e4SLinus Torvalds #define he_writel_tsr3(dev, val, cid) \ 2361da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 3) 2371da177e4SLinus Torvalds 2381da177e4SLinus Torvalds #define he_writel_tsr4(dev, val, cid) \ 2391da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 4) 2401da177e4SLinus Torvalds 2411da177e4SLinus Torvalds /* from page 2-20 2421da177e4SLinus Torvalds * 2431da177e4SLinus Torvalds * NOTE While the transmit connection is active, bits 23 through 0 2441da177e4SLinus Torvalds * of this register must not be written by the host. Byte 2451da177e4SLinus Torvalds * enables should be used during normal operation when writing 2461da177e4SLinus Torvalds * the most significant byte. 2471da177e4SLinus Torvalds */ 2481da177e4SLinus Torvalds 2491da177e4SLinus Torvalds #define he_writel_tsr4_upper(dev, val, cid) \ 2501da177e4SLinus Torvalds he_writel_internal(dev, val, CONFIG_TSRA | (cid << 3) | 4, \ 2511da177e4SLinus Torvalds CON_CTL_TCM \ 2521da177e4SLinus Torvalds | CON_BYTE_DISABLE_2 \ 2531da177e4SLinus Torvalds | CON_BYTE_DISABLE_1 \ 2541da177e4SLinus Torvalds | CON_BYTE_DISABLE_0) 2551da177e4SLinus Torvalds 2561da177e4SLinus Torvalds #define he_readl_tsr4(dev, cid) \ 2571da177e4SLinus Torvalds he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 4) 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvalds #define he_writel_tsr5(dev, val, cid) \ 2601da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 5) 2611da177e4SLinus Torvalds 2621da177e4SLinus Torvalds #define he_writel_tsr6(dev, val, cid) \ 2631da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 6) 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds #define he_writel_tsr7(dev, val, cid) \ 2661da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 7) 2671da177e4SLinus Torvalds 2681da177e4SLinus Torvalds 2691da177e4SLinus Torvalds #define he_writel_tsr8(dev, val, cid) \ 2701da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 0) 2711da177e4SLinus Torvalds 2721da177e4SLinus Torvalds #define he_writel_tsr9(dev, val, cid) \ 2731da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 1) 2741da177e4SLinus Torvalds 2751da177e4SLinus Torvalds #define he_writel_tsr10(dev, val, cid) \ 2761da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 2) 2771da177e4SLinus Torvalds 2781da177e4SLinus Torvalds #define he_writel_tsr11(dev, val, cid) \ 2791da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 3) 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds 2821da177e4SLinus Torvalds #define he_writel_tsr12(dev, val, cid) \ 2831da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 0) 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvalds #define he_writel_tsr13(dev, val, cid) \ 2861da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 1) 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvalds 2891da177e4SLinus Torvalds #define he_writel_tsr14(dev, val, cid) \ 2901da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRD | cid) 2911da177e4SLinus Torvalds 2921da177e4SLinus Torvalds #define he_writel_tsr14_upper(dev, val, cid) \ 2931da177e4SLinus Torvalds he_writel_internal(dev, val, CONFIG_TSRD | cid, \ 2941da177e4SLinus Torvalds CON_CTL_TCM \ 2951da177e4SLinus Torvalds | CON_BYTE_DISABLE_2 \ 2961da177e4SLinus Torvalds | CON_BYTE_DISABLE_1 \ 2971da177e4SLinus Torvalds | CON_BYTE_DISABLE_0) 2981da177e4SLinus Torvalds 2991da177e4SLinus Torvalds /* 2.7.1 per connection receive state registers */ 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds #define he_writel_rsr0(dev, val, cid) \ 3021da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 0) 3031da177e4SLinus Torvalds #define he_readl_rsr0(dev, cid) \ 3041da177e4SLinus Torvalds he_readl_rcm(dev, 0x00000 | (cid << 3) | 0) 3051da177e4SLinus Torvalds 3061da177e4SLinus Torvalds #define he_writel_rsr1(dev, val, cid) \ 3071da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 1) 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds #define he_writel_rsr2(dev, val, cid) \ 3101da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 2) 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds #define he_writel_rsr3(dev, val, cid) \ 3131da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 3) 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds #define he_writel_rsr4(dev, val, cid) \ 3161da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 4) 3171da177e4SLinus Torvalds 3181da177e4SLinus Torvalds #define he_writel_rsr5(dev, val, cid) \ 3191da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 5) 3201da177e4SLinus Torvalds 3211da177e4SLinus Torvalds #define he_writel_rsr6(dev, val, cid) \ 3221da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 6) 3231da177e4SLinus Torvalds 3241da177e4SLinus Torvalds #define he_writel_rsr7(dev, val, cid) \ 3251da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 7) 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds static __inline__ struct atm_vcc* 3281da177e4SLinus Torvalds __find_vcc(struct he_dev *he_dev, unsigned cid) 3291da177e4SLinus Torvalds { 3301da177e4SLinus Torvalds struct hlist_head *head; 3311da177e4SLinus Torvalds struct atm_vcc *vcc; 3321da177e4SLinus Torvalds struct hlist_node *node; 3331da177e4SLinus Torvalds struct sock *s; 3341da177e4SLinus Torvalds short vpi; 3351da177e4SLinus Torvalds int vci; 3361da177e4SLinus Torvalds 3371da177e4SLinus Torvalds vpi = cid >> he_dev->vcibits; 3381da177e4SLinus Torvalds vci = cid & ((1 << he_dev->vcibits) - 1); 3391da177e4SLinus Torvalds head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds sk_for_each(s, node, head) { 3421da177e4SLinus Torvalds vcc = atm_sk(s); 3431da177e4SLinus Torvalds if (vcc->dev == he_dev->atm_dev && 3441da177e4SLinus Torvalds vcc->vci == vci && vcc->vpi == vpi && 3451da177e4SLinus Torvalds vcc->qos.rxtp.traffic_class != ATM_NONE) { 3461da177e4SLinus Torvalds return vcc; 3471da177e4SLinus Torvalds } 3481da177e4SLinus Torvalds } 3491da177e4SLinus Torvalds return NULL; 3501da177e4SLinus Torvalds } 3511da177e4SLinus Torvalds 3521da177e4SLinus Torvalds static int __devinit 3531da177e4SLinus Torvalds he_init_one(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent) 3541da177e4SLinus Torvalds { 3551da177e4SLinus Torvalds struct atm_dev *atm_dev = NULL; 3561da177e4SLinus Torvalds struct he_dev *he_dev = NULL; 3571da177e4SLinus Torvalds int err = 0; 3581da177e4SLinus Torvalds 359900092a4SAdrian Bunk printk(KERN_INFO "ATM he driver\n"); 3601da177e4SLinus Torvalds 3611da177e4SLinus Torvalds if (pci_enable_device(pci_dev)) 3621da177e4SLinus Torvalds return -EIO; 363284901a9SYang Hongyang if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)) != 0) { 3641da177e4SLinus Torvalds printk(KERN_WARNING "he: no suitable dma available\n"); 3651da177e4SLinus Torvalds err = -EIO; 3661da177e4SLinus Torvalds goto init_one_failure; 3671da177e4SLinus Torvalds } 3681da177e4SLinus Torvalds 369d9ca676bSDan Williams atm_dev = atm_dev_register(DEV_LABEL, &pci_dev->dev, &he_ops, -1, NULL); 3701da177e4SLinus Torvalds if (!atm_dev) { 3711da177e4SLinus Torvalds err = -ENODEV; 3721da177e4SLinus Torvalds goto init_one_failure; 3731da177e4SLinus Torvalds } 3741da177e4SLinus Torvalds pci_set_drvdata(pci_dev, atm_dev); 3751da177e4SLinus Torvalds 3760c1cca1dSOm Narasimhan he_dev = kzalloc(sizeof(struct he_dev), 3771da177e4SLinus Torvalds GFP_KERNEL); 3781da177e4SLinus Torvalds if (!he_dev) { 3791da177e4SLinus Torvalds err = -ENOMEM; 3801da177e4SLinus Torvalds goto init_one_failure; 3811da177e4SLinus Torvalds } 3821da177e4SLinus Torvalds he_dev->pci_dev = pci_dev; 3831da177e4SLinus Torvalds he_dev->atm_dev = atm_dev; 3841da177e4SLinus Torvalds he_dev->atm_dev->dev_data = he_dev; 3851da177e4SLinus Torvalds atm_dev->dev_data = he_dev; 3861da177e4SLinus Torvalds he_dev->number = atm_dev->number; 3878a8037acSchas williams tasklet_init(&he_dev->tasklet, he_tasklet, (unsigned long) he_dev); 3888a8037acSchas williams spin_lock_init(&he_dev->global_lock); 3898a8037acSchas williams 3901da177e4SLinus Torvalds if (he_start(atm_dev)) { 3911da177e4SLinus Torvalds he_stop(he_dev); 3921da177e4SLinus Torvalds err = -ENODEV; 3931da177e4SLinus Torvalds goto init_one_failure; 3941da177e4SLinus Torvalds } 3951da177e4SLinus Torvalds he_dev->next = NULL; 3961da177e4SLinus Torvalds if (he_devs) 3971da177e4SLinus Torvalds he_dev->next = he_devs; 3981da177e4SLinus Torvalds he_devs = he_dev; 3991da177e4SLinus Torvalds return 0; 4001da177e4SLinus Torvalds 4011da177e4SLinus Torvalds init_one_failure: 4021da177e4SLinus Torvalds if (atm_dev) 4031da177e4SLinus Torvalds atm_dev_deregister(atm_dev); 4041da177e4SLinus Torvalds kfree(he_dev); 4051da177e4SLinus Torvalds pci_disable_device(pci_dev); 4061da177e4SLinus Torvalds return err; 4071da177e4SLinus Torvalds } 4081da177e4SLinus Torvalds 4091da177e4SLinus Torvalds static void __devexit 4101da177e4SLinus Torvalds he_remove_one (struct pci_dev *pci_dev) 4111da177e4SLinus Torvalds { 4121da177e4SLinus Torvalds struct atm_dev *atm_dev; 4131da177e4SLinus Torvalds struct he_dev *he_dev; 4141da177e4SLinus Torvalds 4151da177e4SLinus Torvalds atm_dev = pci_get_drvdata(pci_dev); 4161da177e4SLinus Torvalds he_dev = HE_DEV(atm_dev); 4171da177e4SLinus Torvalds 4181da177e4SLinus Torvalds /* need to remove from he_devs */ 4191da177e4SLinus Torvalds 4201da177e4SLinus Torvalds he_stop(he_dev); 4211da177e4SLinus Torvalds atm_dev_deregister(atm_dev); 4221da177e4SLinus Torvalds kfree(he_dev); 4231da177e4SLinus Torvalds 4241da177e4SLinus Torvalds pci_set_drvdata(pci_dev, NULL); 4251da177e4SLinus Torvalds pci_disable_device(pci_dev); 4261da177e4SLinus Torvalds } 4271da177e4SLinus Torvalds 4281da177e4SLinus Torvalds 4291da177e4SLinus Torvalds static unsigned 4301da177e4SLinus Torvalds rate_to_atmf(unsigned rate) /* cps to atm forum format */ 4311da177e4SLinus Torvalds { 4321da177e4SLinus Torvalds #define NONZERO (1 << 14) 4331da177e4SLinus Torvalds 4341da177e4SLinus Torvalds unsigned exp = 0; 4351da177e4SLinus Torvalds 4361da177e4SLinus Torvalds if (rate == 0) 4371da177e4SLinus Torvalds return 0; 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvalds rate <<= 9; 4401da177e4SLinus Torvalds while (rate > 0x3ff) { 4411da177e4SLinus Torvalds ++exp; 4421da177e4SLinus Torvalds rate >>= 1; 4431da177e4SLinus Torvalds } 4441da177e4SLinus Torvalds 4451da177e4SLinus Torvalds return (NONZERO | (exp << 9) | (rate & 0x1ff)); 4461da177e4SLinus Torvalds } 4471da177e4SLinus Torvalds 4485b7c714eSRoland Dreier static void __devinit 4491da177e4SLinus Torvalds he_init_rx_lbfp0(struct he_dev *he_dev) 4501da177e4SLinus Torvalds { 4511da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 4521da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 4531da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 4541da177e4SLinus Torvalds unsigned row_offset = he_dev->r0_startrow * he_dev->bytes_per_row; 4551da177e4SLinus Torvalds 4561da177e4SLinus Torvalds lbufd_index = 0; 4571da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA); 4581da177e4SLinus Torvalds 4591da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, RLBF0_H); 4601da177e4SLinus Torvalds 4611da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->r0_numbuffs; ++i) { 4621da177e4SLinus Torvalds lbufd_index += 2; 4631da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 4641da177e4SLinus Torvalds 4651da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 4661da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 4671da177e4SLinus Torvalds 4681da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 4691da177e4SLinus Torvalds lbuf_count = 0; 4701da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 4711da177e4SLinus Torvalds } 4721da177e4SLinus Torvalds lbm_offset += 4; 4731da177e4SLinus Torvalds } 4741da177e4SLinus Torvalds 4751da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 2, RLBF0_T); 4761da177e4SLinus Torvalds he_writel(he_dev, he_dev->r0_numbuffs, RLBF0_C); 4771da177e4SLinus Torvalds } 4781da177e4SLinus Torvalds 4795b7c714eSRoland Dreier static void __devinit 4801da177e4SLinus Torvalds he_init_rx_lbfp1(struct he_dev *he_dev) 4811da177e4SLinus Torvalds { 4821da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 4831da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 4841da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 4851da177e4SLinus Torvalds unsigned row_offset = he_dev->r1_startrow * he_dev->bytes_per_row; 4861da177e4SLinus Torvalds 4871da177e4SLinus Torvalds lbufd_index = 1; 4881da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index); 4891da177e4SLinus Torvalds 4901da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, RLBF1_H); 4911da177e4SLinus Torvalds 4921da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->r1_numbuffs; ++i) { 4931da177e4SLinus Torvalds lbufd_index += 2; 4941da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 4951da177e4SLinus Torvalds 4961da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 4971da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 4981da177e4SLinus Torvalds 4991da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 5001da177e4SLinus Torvalds lbuf_count = 0; 5011da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 5021da177e4SLinus Torvalds } 5031da177e4SLinus Torvalds lbm_offset += 4; 5041da177e4SLinus Torvalds } 5051da177e4SLinus Torvalds 5061da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 2, RLBF1_T); 5071da177e4SLinus Torvalds he_writel(he_dev, he_dev->r1_numbuffs, RLBF1_C); 5081da177e4SLinus Torvalds } 5091da177e4SLinus Torvalds 5105b7c714eSRoland Dreier static void __devinit 5111da177e4SLinus Torvalds he_init_tx_lbfp(struct he_dev *he_dev) 5121da177e4SLinus Torvalds { 5131da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 5141da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 5151da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 5161da177e4SLinus Torvalds unsigned row_offset = he_dev->tx_startrow * he_dev->bytes_per_row; 5171da177e4SLinus Torvalds 5181da177e4SLinus Torvalds lbufd_index = he_dev->r0_numbuffs + he_dev->r1_numbuffs; 5191da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index); 5201da177e4SLinus Torvalds 5211da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, TLBF_H); 5221da177e4SLinus Torvalds 5231da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->tx_numbuffs; ++i) { 5241da177e4SLinus Torvalds lbufd_index += 1; 5251da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 5261da177e4SLinus Torvalds 5271da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 5281da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 5291da177e4SLinus Torvalds 5301da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 5311da177e4SLinus Torvalds lbuf_count = 0; 5321da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 5331da177e4SLinus Torvalds } 5341da177e4SLinus Torvalds lbm_offset += 2; 5351da177e4SLinus Torvalds } 5361da177e4SLinus Torvalds 5371da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 1, TLBF_T); 5381da177e4SLinus Torvalds } 5391da177e4SLinus Torvalds 5405b7c714eSRoland Dreier static int __devinit 5411da177e4SLinus Torvalds he_init_tpdrq(struct he_dev *he_dev) 5421da177e4SLinus Torvalds { 5431da177e4SLinus Torvalds he_dev->tpdrq_base = pci_alloc_consistent(he_dev->pci_dev, 5441da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq), &he_dev->tpdrq_phys); 5451da177e4SLinus Torvalds if (he_dev->tpdrq_base == NULL) { 5461da177e4SLinus Torvalds hprintk("failed to alloc tpdrq\n"); 5471da177e4SLinus Torvalds return -ENOMEM; 5481da177e4SLinus Torvalds } 5491da177e4SLinus Torvalds memset(he_dev->tpdrq_base, 0, 5501da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq)); 5511da177e4SLinus Torvalds 5521da177e4SLinus Torvalds he_dev->tpdrq_tail = he_dev->tpdrq_base; 5531da177e4SLinus Torvalds he_dev->tpdrq_head = he_dev->tpdrq_base; 5541da177e4SLinus Torvalds 5551da177e4SLinus Torvalds he_writel(he_dev, he_dev->tpdrq_phys, TPDRQ_B_H); 5561da177e4SLinus Torvalds he_writel(he_dev, 0, TPDRQ_T); 5571da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TPDRQ_SIZE - 1, TPDRQ_S); 5581da177e4SLinus Torvalds 5591da177e4SLinus Torvalds return 0; 5601da177e4SLinus Torvalds } 5611da177e4SLinus Torvalds 5625b7c714eSRoland Dreier static void __devinit 5631da177e4SLinus Torvalds he_init_cs_block(struct he_dev *he_dev) 5641da177e4SLinus Torvalds { 5651da177e4SLinus Torvalds unsigned clock, rate, delta; 5661da177e4SLinus Torvalds int reg; 5671da177e4SLinus Torvalds 5681da177e4SLinus Torvalds /* 5.1.7 cs block initialization */ 5691da177e4SLinus Torvalds 5701da177e4SLinus Torvalds for (reg = 0; reg < 0x20; ++reg) 5711da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0, CS_STTIM0 + reg); 5721da177e4SLinus Torvalds 5731da177e4SLinus Torvalds /* rate grid timer reload values */ 5741da177e4SLinus Torvalds 5751da177e4SLinus Torvalds clock = he_is622(he_dev) ? 66667000 : 50000000; 5761da177e4SLinus Torvalds rate = he_dev->atm_dev->link_rate; 5771da177e4SLinus Torvalds delta = rate / 16 / 2; 5781da177e4SLinus Torvalds 5791da177e4SLinus Torvalds for (reg = 0; reg < 0x10; ++reg) { 5801da177e4SLinus Torvalds /* 2.4 internal transmit function 5811da177e4SLinus Torvalds * 5821da177e4SLinus Torvalds * we initialize the first row in the rate grid. 5831da177e4SLinus Torvalds * values are period (in clock cycles) of timer 5841da177e4SLinus Torvalds */ 5851da177e4SLinus Torvalds unsigned period = clock / rate; 5861da177e4SLinus Torvalds 5871da177e4SLinus Torvalds he_writel_mbox(he_dev, period, CS_TGRLD0 + reg); 5881da177e4SLinus Torvalds rate -= delta; 5891da177e4SLinus Torvalds } 5901da177e4SLinus Torvalds 5911da177e4SLinus Torvalds if (he_is622(he_dev)) { 5921da177e4SLinus Torvalds /* table 5.2 (4 cells per lbuf) */ 5931da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000800fa, CS_ERTHR0); 5941da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000c33cb, CS_ERTHR1); 5951da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0010101b, CS_ERTHR2); 5961da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00181dac, CS_ERTHR3); 5971da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00280600, CS_ERTHR4); 5981da177e4SLinus Torvalds 5991da177e4SLinus Torvalds /* table 5.3, 5.4, 5.5, 5.6, 5.7 */ 6001da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x023de8b3, CS_ERCTL0); 6011da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1801, CS_ERCTL1); 6021da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_ERCTL2); 6031da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0); 6041da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_ERSTAT1); 6051da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x14585, CS_RTFWR); 6061da177e4SLinus Torvalds 6071da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4680, CS_RTATR); 6081da177e4SLinus Torvalds 6091da177e4SLinus Torvalds /* table 5.8 */ 6101da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00159ece, CS_TFBSET); 6111da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_WCRMAX); 6121da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5eb3, CS_WCRMIN); 6131da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xe8b3, CS_WCRINC); 6141da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xdeb3, CS_WCRDEC); 6151da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_WCRCEIL); 6161da177e4SLinus Torvalds 6171da177e4SLinus Torvalds /* table 5.9 */ 6181da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5, CS_OTPPER); 6191da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x14, CS_OTWPER); 6201da177e4SLinus Torvalds } else { 6211da177e4SLinus Torvalds /* table 5.1 (4 cells per lbuf) */ 6221da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000400ea, CS_ERTHR0); 6231da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00063388, CS_ERTHR1); 6241da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00081018, CS_ERTHR2); 6251da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000c1dac, CS_ERTHR3); 6261da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0014051a, CS_ERTHR4); 6271da177e4SLinus Torvalds 6281da177e4SLinus Torvalds /* table 5.3, 5.4, 5.5, 5.6, 5.7 */ 6291da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0235e4b1, CS_ERCTL0); 6301da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4701, CS_ERCTL1); 6311da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_ERCTL2); 6321da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0); 6331da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_ERSTAT1); 6341da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xf424, CS_RTFWR); 6351da177e4SLinus Torvalds 6361da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4680, CS_RTATR); 6371da177e4SLinus Torvalds 6381da177e4SLinus Torvalds /* table 5.8 */ 6391da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000563b7, CS_TFBSET); 6401da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_WCRMAX); 6411da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5ab1, CS_WCRMIN); 6421da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xe4b1, CS_WCRINC); 6431da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xdab1, CS_WCRDEC); 6441da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_WCRCEIL); 6451da177e4SLinus Torvalds 6461da177e4SLinus Torvalds /* table 5.9 */ 6471da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x6, CS_OTPPER); 6481da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1e, CS_OTWPER); 6491da177e4SLinus Torvalds } 6501da177e4SLinus Torvalds 6511da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x8, CS_OTTLIM); 6521da177e4SLinus Torvalds 6531da177e4SLinus Torvalds for (reg = 0; reg < 0x8; ++reg) 6541da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0, CS_HGRRT0 + reg); 6551da177e4SLinus Torvalds 6561da177e4SLinus Torvalds } 6571da177e4SLinus Torvalds 6585b7c714eSRoland Dreier static int __devinit 6591da177e4SLinus Torvalds he_init_cs_block_rcm(struct he_dev *he_dev) 6601da177e4SLinus Torvalds { 6611da177e4SLinus Torvalds unsigned (*rategrid)[16][16]; 6621da177e4SLinus Torvalds unsigned rate, delta; 6631da177e4SLinus Torvalds int i, j, reg; 6641da177e4SLinus Torvalds 6651da177e4SLinus Torvalds unsigned rate_atmf, exp, man; 6661da177e4SLinus Torvalds unsigned long long rate_cps; 6671da177e4SLinus Torvalds int mult, buf, buf_limit = 4; 6681da177e4SLinus Torvalds 6691da177e4SLinus Torvalds rategrid = kmalloc( sizeof(unsigned) * 16 * 16, GFP_KERNEL); 6701da177e4SLinus Torvalds if (!rategrid) 6711da177e4SLinus Torvalds return -ENOMEM; 6721da177e4SLinus Torvalds 6731da177e4SLinus Torvalds /* initialize rate grid group table */ 6741da177e4SLinus Torvalds 6751da177e4SLinus Torvalds for (reg = 0x0; reg < 0xff; ++reg) 6761da177e4SLinus Torvalds he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg); 6771da177e4SLinus Torvalds 6781da177e4SLinus Torvalds /* initialize rate controller groups */ 6791da177e4SLinus Torvalds 6801da177e4SLinus Torvalds for (reg = 0x100; reg < 0x1ff; ++reg) 6811da177e4SLinus Torvalds he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg); 6821da177e4SLinus Torvalds 6831da177e4SLinus Torvalds /* initialize tNrm lookup table */ 6841da177e4SLinus Torvalds 6851da177e4SLinus Torvalds /* the manual makes reference to a routine in a sample driver 6861da177e4SLinus Torvalds for proper configuration; fortunately, we only need this 6871da177e4SLinus Torvalds in order to support abr connection */ 6881da177e4SLinus Torvalds 6891da177e4SLinus Torvalds /* initialize rate to group table */ 6901da177e4SLinus Torvalds 6911da177e4SLinus Torvalds rate = he_dev->atm_dev->link_rate; 6921da177e4SLinus Torvalds delta = rate / 32; 6931da177e4SLinus Torvalds 6941da177e4SLinus Torvalds /* 6951da177e4SLinus Torvalds * 2.4 transmit internal functions 6961da177e4SLinus Torvalds * 6971da177e4SLinus Torvalds * we construct a copy of the rate grid used by the scheduler 6981da177e4SLinus Torvalds * in order to construct the rate to group table below 6991da177e4SLinus Torvalds */ 7001da177e4SLinus Torvalds 7011da177e4SLinus Torvalds for (j = 0; j < 16; j++) { 7021da177e4SLinus Torvalds (*rategrid)[0][j] = rate; 7031da177e4SLinus Torvalds rate -= delta; 7041da177e4SLinus Torvalds } 7051da177e4SLinus Torvalds 7061da177e4SLinus Torvalds for (i = 1; i < 16; i++) 7071da177e4SLinus Torvalds for (j = 0; j < 16; j++) 7081da177e4SLinus Torvalds if (i > 14) 7091da177e4SLinus Torvalds (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 4; 7101da177e4SLinus Torvalds else 7111da177e4SLinus Torvalds (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 2; 7121da177e4SLinus Torvalds 7131da177e4SLinus Torvalds /* 7141da177e4SLinus Torvalds * 2.4 transmit internal function 7151da177e4SLinus Torvalds * 7161da177e4SLinus Torvalds * this table maps the upper 5 bits of exponent and mantissa 7171da177e4SLinus Torvalds * of the atm forum representation of the rate into an index 7181da177e4SLinus Torvalds * on rate grid 7191da177e4SLinus Torvalds */ 7201da177e4SLinus Torvalds 7211da177e4SLinus Torvalds rate_atmf = 0; 7221da177e4SLinus Torvalds while (rate_atmf < 0x400) { 7231da177e4SLinus Torvalds man = (rate_atmf & 0x1f) << 4; 7241da177e4SLinus Torvalds exp = rate_atmf >> 5; 7251da177e4SLinus Torvalds 7261da177e4SLinus Torvalds /* 7271da177e4SLinus Torvalds instead of '/ 512', use '>> 9' to prevent a call 7281da177e4SLinus Torvalds to divdu3 on x86 platforms 7291da177e4SLinus Torvalds */ 7301da177e4SLinus Torvalds rate_cps = (unsigned long long) (1 << exp) * (man + 512) >> 9; 7311da177e4SLinus Torvalds 7321da177e4SLinus Torvalds if (rate_cps < 10) 7331da177e4SLinus Torvalds rate_cps = 10; /* 2.2.1 minimum payload rate is 10 cps */ 7341da177e4SLinus Torvalds 7351da177e4SLinus Torvalds for (i = 255; i > 0; i--) 7361da177e4SLinus Torvalds if ((*rategrid)[i/16][i%16] >= rate_cps) 7371da177e4SLinus Torvalds break; /* pick nearest rate instead? */ 7381da177e4SLinus Torvalds 7391da177e4SLinus Torvalds /* 7401da177e4SLinus Torvalds * each table entry is 16 bits: (rate grid index (8 bits) 7411da177e4SLinus Torvalds * and a buffer limit (8 bits) 7421da177e4SLinus Torvalds * there are two table entries in each 32-bit register 7431da177e4SLinus Torvalds */ 7441da177e4SLinus Torvalds 7451da177e4SLinus Torvalds #ifdef notdef 7461da177e4SLinus Torvalds buf = rate_cps * he_dev->tx_numbuffs / 7471da177e4SLinus Torvalds (he_dev->atm_dev->link_rate * 2); 7481da177e4SLinus Torvalds #else 7491da177e4SLinus Torvalds /* this is pretty, but avoids _divdu3 and is mostly correct */ 7501da177e4SLinus Torvalds mult = he_dev->atm_dev->link_rate / ATM_OC3_PCR; 7511da177e4SLinus Torvalds if (rate_cps > (272 * mult)) 7521da177e4SLinus Torvalds buf = 4; 7531da177e4SLinus Torvalds else if (rate_cps > (204 * mult)) 7541da177e4SLinus Torvalds buf = 3; 7551da177e4SLinus Torvalds else if (rate_cps > (136 * mult)) 7561da177e4SLinus Torvalds buf = 2; 7571da177e4SLinus Torvalds else if (rate_cps > (68 * mult)) 7581da177e4SLinus Torvalds buf = 1; 7591da177e4SLinus Torvalds else 7601da177e4SLinus Torvalds buf = 0; 7611da177e4SLinus Torvalds #endif 7621da177e4SLinus Torvalds if (buf > buf_limit) 7631da177e4SLinus Torvalds buf = buf_limit; 7641da177e4SLinus Torvalds reg = (reg << 16) | ((i << 8) | buf); 7651da177e4SLinus Torvalds 7661da177e4SLinus Torvalds #define RTGTBL_OFFSET 0x400 7671da177e4SLinus Torvalds 7681da177e4SLinus Torvalds if (rate_atmf & 0x1) 7691da177e4SLinus Torvalds he_writel_rcm(he_dev, reg, 7701da177e4SLinus Torvalds CONFIG_RCMABR + RTGTBL_OFFSET + (rate_atmf >> 1)); 7711da177e4SLinus Torvalds 7721da177e4SLinus Torvalds ++rate_atmf; 7731da177e4SLinus Torvalds } 7741da177e4SLinus Torvalds 7751da177e4SLinus Torvalds kfree(rategrid); 7761da177e4SLinus Torvalds return 0; 7771da177e4SLinus Torvalds } 7781da177e4SLinus Torvalds 7795b7c714eSRoland Dreier static int __devinit 7801da177e4SLinus Torvalds he_init_group(struct he_dev *he_dev, int group) 7811da177e4SLinus Torvalds { 782e623d625Schas williams - CONTRACTOR struct he_buff *heb, *next; 783e623d625Schas williams - CONTRACTOR dma_addr_t mapping; 7841da177e4SLinus Torvalds int i; 7851da177e4SLinus Torvalds 7861d927870Schas williams - CONTRACTOR he_writel(he_dev, 0x0, G0_RBPS_S + (group * 32)); 7871d927870Schas williams - CONTRACTOR he_writel(he_dev, 0x0, G0_RBPS_T + (group * 32)); 7881d927870Schas williams - CONTRACTOR he_writel(he_dev, 0x0, G0_RBPS_QI + (group * 32)); 7891d927870Schas williams - CONTRACTOR he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 7901da177e4SLinus Torvalds G0_RBPS_BS + (group * 32)); 7911da177e4SLinus Torvalds 792e623d625Schas williams - CONTRACTOR /* bitmap table */ 793e623d625Schas williams - CONTRACTOR he_dev->rbpl_table = kmalloc(BITS_TO_LONGS(RBPL_TABLE_SIZE) 794e623d625Schas williams - CONTRACTOR * sizeof(unsigned long), GFP_KERNEL); 795e623d625Schas williams - CONTRACTOR if (!he_dev->rbpl_table) { 796e623d625Schas williams - CONTRACTOR hprintk("unable to allocate rbpl bitmap table\n"); 797e623d625Schas williams - CONTRACTOR return -ENOMEM; 798e623d625Schas williams - CONTRACTOR } 799e623d625Schas williams - CONTRACTOR bitmap_zero(he_dev->rbpl_table, RBPL_TABLE_SIZE); 800e623d625Schas williams - CONTRACTOR 801e623d625Schas williams - CONTRACTOR /* rbpl_virt 64-bit pointers */ 802e623d625Schas williams - CONTRACTOR he_dev->rbpl_virt = kmalloc(RBPL_TABLE_SIZE 803e623d625Schas williams - CONTRACTOR * sizeof(struct he_buff *), GFP_KERNEL); 804e623d625Schas williams - CONTRACTOR if (!he_dev->rbpl_virt) { 805e623d625Schas williams - CONTRACTOR hprintk("unable to allocate rbpl virt table\n"); 806e623d625Schas williams - CONTRACTOR goto out_free_rbpl_table; 807e623d625Schas williams - CONTRACTOR } 808e623d625Schas williams - CONTRACTOR 8091da177e4SLinus Torvalds /* large buffer pool */ 8101da177e4SLinus Torvalds he_dev->rbpl_pool = pci_pool_create("rbpl", he_dev->pci_dev, 811e623d625Schas williams - CONTRACTOR CONFIG_RBPL_BUFSIZE, 64, 0); 8121da177e4SLinus Torvalds if (he_dev->rbpl_pool == NULL) { 8131da177e4SLinus Torvalds hprintk("unable to create rbpl pool\n"); 814e623d625Schas williams - CONTRACTOR goto out_free_rbpl_virt; 8151da177e4SLinus Torvalds } 8161da177e4SLinus Torvalds 8171da177e4SLinus Torvalds he_dev->rbpl_base = pci_alloc_consistent(he_dev->pci_dev, 8181da177e4SLinus Torvalds CONFIG_RBPL_SIZE * sizeof(struct he_rbp), &he_dev->rbpl_phys); 8191da177e4SLinus Torvalds if (he_dev->rbpl_base == NULL) { 8205d5baa92Sroel kluin hprintk("failed to alloc rbpl_base\n"); 8215d5baa92Sroel kluin goto out_destroy_rbpl_pool; 8221da177e4SLinus Torvalds } 8231da177e4SLinus Torvalds memset(he_dev->rbpl_base, 0, CONFIG_RBPL_SIZE * sizeof(struct he_rbp)); 824e623d625Schas williams - CONTRACTOR 825e623d625Schas williams - CONTRACTOR INIT_LIST_HEAD(&he_dev->rbpl_outstanding); 8261da177e4SLinus Torvalds 8271da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPL_SIZE; ++i) { 8281da177e4SLinus Torvalds 829e623d625Schas williams - CONTRACTOR heb = pci_pool_alloc(he_dev->rbpl_pool, GFP_KERNEL|GFP_DMA, &mapping); 830e623d625Schas williams - CONTRACTOR if (!heb) 831e623d625Schas williams - CONTRACTOR goto out_free_rbpl; 832e623d625Schas williams - CONTRACTOR heb->mapping = mapping; 833e623d625Schas williams - CONTRACTOR list_add(&heb->entry, &he_dev->rbpl_outstanding); 8341da177e4SLinus Torvalds 835e623d625Schas williams - CONTRACTOR set_bit(i, he_dev->rbpl_table); 836e623d625Schas williams - CONTRACTOR he_dev->rbpl_virt[i] = heb; 837e623d625Schas williams - CONTRACTOR he_dev->rbpl_hint = i + 1; 838e623d625Schas williams - CONTRACTOR he_dev->rbpl_base[i].idx = i << RBP_IDX_OFFSET; 839e623d625Schas williams - CONTRACTOR he_dev->rbpl_base[i].phys = mapping + offsetof(struct he_buff, data); 8401da177e4SLinus Torvalds } 8411da177e4SLinus Torvalds he_dev->rbpl_tail = &he_dev->rbpl_base[CONFIG_RBPL_SIZE - 1]; 8421da177e4SLinus Torvalds 8431da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbpl_phys, G0_RBPL_S + (group * 32)); 8441da177e4SLinus Torvalds he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), 8451da177e4SLinus Torvalds G0_RBPL_T + (group * 32)); 846e623d625Schas williams - CONTRACTOR he_writel(he_dev, (CONFIG_RBPL_BUFSIZE - sizeof(struct he_buff))/4, 8471da177e4SLinus Torvalds G0_RBPL_BS + (group * 32)); 8481da177e4SLinus Torvalds he_writel(he_dev, 8491da177e4SLinus Torvalds RBP_THRESH(CONFIG_RBPL_THRESH) | 8501da177e4SLinus Torvalds RBP_QSIZE(CONFIG_RBPL_SIZE - 1) | 8511da177e4SLinus Torvalds RBP_INT_ENB, 8521da177e4SLinus Torvalds G0_RBPL_QI + (group * 32)); 8531da177e4SLinus Torvalds 8541da177e4SLinus Torvalds /* rx buffer ready queue */ 8551da177e4SLinus Torvalds 8561da177e4SLinus Torvalds he_dev->rbrq_base = pci_alloc_consistent(he_dev->pci_dev, 8571da177e4SLinus Torvalds CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), &he_dev->rbrq_phys); 8581da177e4SLinus Torvalds if (he_dev->rbrq_base == NULL) { 8591da177e4SLinus Torvalds hprintk("failed to allocate rbrq\n"); 860e623d625Schas williams - CONTRACTOR goto out_free_rbpl; 8611da177e4SLinus Torvalds } 8621da177e4SLinus Torvalds memset(he_dev->rbrq_base, 0, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq)); 8631da177e4SLinus Torvalds 8641da177e4SLinus Torvalds he_dev->rbrq_head = he_dev->rbrq_base; 8651da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbrq_phys, G0_RBRQ_ST + (group * 16)); 8661da177e4SLinus Torvalds he_writel(he_dev, 0, G0_RBRQ_H + (group * 16)); 8671da177e4SLinus Torvalds he_writel(he_dev, 8681da177e4SLinus Torvalds RBRQ_THRESH(CONFIG_RBRQ_THRESH) | RBRQ_SIZE(CONFIG_RBRQ_SIZE - 1), 8691da177e4SLinus Torvalds G0_RBRQ_Q + (group * 16)); 8701da177e4SLinus Torvalds if (irq_coalesce) { 8711da177e4SLinus Torvalds hprintk("coalescing interrupts\n"); 8721da177e4SLinus Torvalds he_writel(he_dev, RBRQ_TIME(768) | RBRQ_COUNT(7), 8731da177e4SLinus Torvalds G0_RBRQ_I + (group * 16)); 8741da177e4SLinus Torvalds } else 8751da177e4SLinus Torvalds he_writel(he_dev, RBRQ_TIME(0) | RBRQ_COUNT(1), 8761da177e4SLinus Torvalds G0_RBRQ_I + (group * 16)); 8771da177e4SLinus Torvalds 8781da177e4SLinus Torvalds /* tx buffer ready queue */ 8791da177e4SLinus Torvalds 8801da177e4SLinus Torvalds he_dev->tbrq_base = pci_alloc_consistent(he_dev->pci_dev, 8811da177e4SLinus Torvalds CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), &he_dev->tbrq_phys); 8821da177e4SLinus Torvalds if (he_dev->tbrq_base == NULL) { 8831da177e4SLinus Torvalds hprintk("failed to allocate tbrq\n"); 8845d5baa92Sroel kluin goto out_free_rbpq_base; 8851da177e4SLinus Torvalds } 8861da177e4SLinus Torvalds memset(he_dev->tbrq_base, 0, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq)); 8871da177e4SLinus Torvalds 8881da177e4SLinus Torvalds he_dev->tbrq_head = he_dev->tbrq_base; 8891da177e4SLinus Torvalds 8901da177e4SLinus Torvalds he_writel(he_dev, he_dev->tbrq_phys, G0_TBRQ_B_T + (group * 16)); 8911da177e4SLinus Torvalds he_writel(he_dev, 0, G0_TBRQ_H + (group * 16)); 8921da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TBRQ_SIZE - 1, G0_TBRQ_S + (group * 16)); 8931da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TBRQ_THRESH, G0_TBRQ_THRESH + (group * 16)); 8941da177e4SLinus Torvalds 8951da177e4SLinus Torvalds return 0; 8965d5baa92Sroel kluin 8975d5baa92Sroel kluin out_free_rbpq_base: 8985d5baa92Sroel kluin pci_free_consistent(he_dev->pci_dev, CONFIG_RBRQ_SIZE * 8995d5baa92Sroel kluin sizeof(struct he_rbrq), he_dev->rbrq_base, 9005d5baa92Sroel kluin he_dev->rbrq_phys); 901e623d625Schas williams - CONTRACTOR out_free_rbpl: 902e623d625Schas williams - CONTRACTOR list_for_each_entry_safe(heb, next, &he_dev->rbpl_outstanding, entry) 903e623d625Schas williams - CONTRACTOR pci_pool_free(he_dev->rbpl_pool, heb, heb->mapping); 9045d5baa92Sroel kluin 9055d5baa92Sroel kluin pci_free_consistent(he_dev->pci_dev, CONFIG_RBPL_SIZE * 9065d5baa92Sroel kluin sizeof(struct he_rbp), he_dev->rbpl_base, 9075d5baa92Sroel kluin he_dev->rbpl_phys); 9085d5baa92Sroel kluin out_destroy_rbpl_pool: 9095d5baa92Sroel kluin pci_pool_destroy(he_dev->rbpl_pool); 910e623d625Schas williams - CONTRACTOR out_free_rbpl_virt: 911e623d625Schas williams - CONTRACTOR kfree(he_dev->rbpl_virt); 912e623d625Schas williams - CONTRACTOR out_free_rbpl_table: 913e623d625Schas williams - CONTRACTOR kfree(he_dev->rbpl_table); 9145d5baa92Sroel kluin 9155d5baa92Sroel kluin return -ENOMEM; 9161da177e4SLinus Torvalds } 9171da177e4SLinus Torvalds 9185b7c714eSRoland Dreier static int __devinit 9191da177e4SLinus Torvalds he_init_irq(struct he_dev *he_dev) 9201da177e4SLinus Torvalds { 9211da177e4SLinus Torvalds int i; 9221da177e4SLinus Torvalds 9231da177e4SLinus Torvalds /* 2.9.3.5 tail offset for each interrupt queue is located after the 9241da177e4SLinus Torvalds end of the interrupt queue */ 9251da177e4SLinus Torvalds 9261da177e4SLinus Torvalds he_dev->irq_base = pci_alloc_consistent(he_dev->pci_dev, 9271da177e4SLinus Torvalds (CONFIG_IRQ_SIZE+1) * sizeof(struct he_irq), &he_dev->irq_phys); 9281da177e4SLinus Torvalds if (he_dev->irq_base == NULL) { 9291da177e4SLinus Torvalds hprintk("failed to allocate irq\n"); 9301da177e4SLinus Torvalds return -ENOMEM; 9311da177e4SLinus Torvalds } 9321da177e4SLinus Torvalds he_dev->irq_tailoffset = (unsigned *) 9331da177e4SLinus Torvalds &he_dev->irq_base[CONFIG_IRQ_SIZE]; 9341da177e4SLinus Torvalds *he_dev->irq_tailoffset = 0; 9351da177e4SLinus Torvalds he_dev->irq_head = he_dev->irq_base; 9361da177e4SLinus Torvalds he_dev->irq_tail = he_dev->irq_base; 9371da177e4SLinus Torvalds 9381da177e4SLinus Torvalds for (i = 0; i < CONFIG_IRQ_SIZE; ++i) 9391da177e4SLinus Torvalds he_dev->irq_base[i].isw = ITYPE_INVALID; 9401da177e4SLinus Torvalds 9411da177e4SLinus Torvalds he_writel(he_dev, he_dev->irq_phys, IRQ0_BASE); 9421da177e4SLinus Torvalds he_writel(he_dev, 9431da177e4SLinus Torvalds IRQ_SIZE(CONFIG_IRQ_SIZE) | IRQ_THRESH(CONFIG_IRQ_THRESH), 9441da177e4SLinus Torvalds IRQ0_HEAD); 9451da177e4SLinus Torvalds he_writel(he_dev, IRQ_INT_A | IRQ_TYPE_LINE, IRQ0_CNTL); 9461da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ0_DATA); 9471da177e4SLinus Torvalds 9481da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_BASE); 9491da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_HEAD); 9501da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_CNTL); 9511da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_DATA); 9521da177e4SLinus Torvalds 9531da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_BASE); 9541da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_HEAD); 9551da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_CNTL); 9561da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_DATA); 9571da177e4SLinus Torvalds 9581da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_BASE); 9591da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_HEAD); 9601da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_CNTL); 9611da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_DATA); 9621da177e4SLinus Torvalds 9631da177e4SLinus Torvalds /* 2.9.3.2 interrupt queue mapping registers */ 9641da177e4SLinus Torvalds 9651da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_10_MAP); 9661da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_32_MAP); 9671da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_54_MAP); 9681da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_76_MAP); 9691da177e4SLinus Torvalds 97006df277aSchas williams - CONTRACTOR if (request_irq(he_dev->pci_dev->irq, 97106df277aSchas williams - CONTRACTOR he_irq_handler, IRQF_SHARED, DEV_LABEL, he_dev)) { 9721da177e4SLinus Torvalds hprintk("irq %d already in use\n", he_dev->pci_dev->irq); 9731da177e4SLinus Torvalds return -EINVAL; 9741da177e4SLinus Torvalds } 9751da177e4SLinus Torvalds 9761da177e4SLinus Torvalds he_dev->irq = he_dev->pci_dev->irq; 9771da177e4SLinus Torvalds 9781da177e4SLinus Torvalds return 0; 9791da177e4SLinus Torvalds } 9801da177e4SLinus Torvalds 981d17f0865SChas Williams static int __devinit 9821da177e4SLinus Torvalds he_start(struct atm_dev *dev) 9831da177e4SLinus Torvalds { 9841da177e4SLinus Torvalds struct he_dev *he_dev; 9851da177e4SLinus Torvalds struct pci_dev *pci_dev; 9861da177e4SLinus Torvalds unsigned long membase; 9871da177e4SLinus Torvalds 9881da177e4SLinus Torvalds u16 command; 9891da177e4SLinus Torvalds u32 gen_cntl_0, host_cntl, lb_swap; 9901da177e4SLinus Torvalds u8 cache_size, timer; 9911da177e4SLinus Torvalds 9921da177e4SLinus Torvalds unsigned err; 9931da177e4SLinus Torvalds unsigned int status, reg; 9941da177e4SLinus Torvalds int i, group; 9951da177e4SLinus Torvalds 9961da177e4SLinus Torvalds he_dev = HE_DEV(dev); 9971da177e4SLinus Torvalds pci_dev = he_dev->pci_dev; 9981da177e4SLinus Torvalds 9991da177e4SLinus Torvalds membase = pci_resource_start(pci_dev, 0); 10001da177e4SLinus Torvalds HPRINTK("membase = 0x%lx irq = %d.\n", membase, pci_dev->irq); 10011da177e4SLinus Torvalds 10021da177e4SLinus Torvalds /* 10031da177e4SLinus Torvalds * pci bus controller initialization 10041da177e4SLinus Torvalds */ 10051da177e4SLinus Torvalds 10061da177e4SLinus Torvalds /* 4.3 pci bus controller-specific initialization */ 10071da177e4SLinus Torvalds if (pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0) != 0) { 10081da177e4SLinus Torvalds hprintk("can't read GEN_CNTL_0\n"); 10091da177e4SLinus Torvalds return -EINVAL; 10101da177e4SLinus Torvalds } 10111da177e4SLinus Torvalds gen_cntl_0 |= (MRL_ENB | MRM_ENB | IGNORE_TIMEOUT); 10121da177e4SLinus Torvalds if (pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0) != 0) { 10131da177e4SLinus Torvalds hprintk("can't write GEN_CNTL_0.\n"); 10141da177e4SLinus Torvalds return -EINVAL; 10151da177e4SLinus Torvalds } 10161da177e4SLinus Torvalds 10171da177e4SLinus Torvalds if (pci_read_config_word(pci_dev, PCI_COMMAND, &command) != 0) { 10181da177e4SLinus Torvalds hprintk("can't read PCI_COMMAND.\n"); 10191da177e4SLinus Torvalds return -EINVAL; 10201da177e4SLinus Torvalds } 10211da177e4SLinus Torvalds 10221da177e4SLinus Torvalds command |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE); 10231da177e4SLinus Torvalds if (pci_write_config_word(pci_dev, PCI_COMMAND, command) != 0) { 10241da177e4SLinus Torvalds hprintk("can't enable memory.\n"); 10251da177e4SLinus Torvalds return -EINVAL; 10261da177e4SLinus Torvalds } 10271da177e4SLinus Torvalds 10281da177e4SLinus Torvalds if (pci_read_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, &cache_size)) { 10291da177e4SLinus Torvalds hprintk("can't read cache line size?\n"); 10301da177e4SLinus Torvalds return -EINVAL; 10311da177e4SLinus Torvalds } 10321da177e4SLinus Torvalds 10331da177e4SLinus Torvalds if (cache_size < 16) { 10341da177e4SLinus Torvalds cache_size = 16; 10351da177e4SLinus Torvalds if (pci_write_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, cache_size)) 10361da177e4SLinus Torvalds hprintk("can't set cache line size to %d\n", cache_size); 10371da177e4SLinus Torvalds } 10381da177e4SLinus Torvalds 10391da177e4SLinus Torvalds if (pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &timer)) { 10401da177e4SLinus Torvalds hprintk("can't read latency timer?\n"); 10411da177e4SLinus Torvalds return -EINVAL; 10421da177e4SLinus Torvalds } 10431da177e4SLinus Torvalds 10441da177e4SLinus Torvalds /* from table 3.9 10451da177e4SLinus Torvalds * 10461da177e4SLinus Torvalds * LAT_TIMER = 1 + AVG_LAT + BURST_SIZE/BUS_SIZE 10471da177e4SLinus Torvalds * 10481da177e4SLinus Torvalds * AVG_LAT: The average first data read/write latency [maximum 16 clock cycles] 10491da177e4SLinus Torvalds * BURST_SIZE: 1536 bytes (read) for 622, 768 bytes (read) for 155 [192 clock cycles] 10501da177e4SLinus Torvalds * 10511da177e4SLinus Torvalds */ 10521da177e4SLinus Torvalds #define LAT_TIMER 209 10531da177e4SLinus Torvalds if (timer < LAT_TIMER) { 10541da177e4SLinus Torvalds HPRINTK("latency timer was %d, setting to %d\n", timer, LAT_TIMER); 10551da177e4SLinus Torvalds timer = LAT_TIMER; 10561da177e4SLinus Torvalds if (pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, timer)) 10571da177e4SLinus Torvalds hprintk("can't set latency timer to %d\n", timer); 10581da177e4SLinus Torvalds } 10591da177e4SLinus Torvalds 10601da177e4SLinus Torvalds if (!(he_dev->membase = ioremap(membase, HE_REGMAP_SIZE))) { 10611da177e4SLinus Torvalds hprintk("can't set up page mapping\n"); 10621da177e4SLinus Torvalds return -EINVAL; 10631da177e4SLinus Torvalds } 10641da177e4SLinus Torvalds 10651da177e4SLinus Torvalds /* 4.4 card reset */ 10661da177e4SLinus Torvalds he_writel(he_dev, 0x0, RESET_CNTL); 10671da177e4SLinus Torvalds he_writel(he_dev, 0xff, RESET_CNTL); 10681da177e4SLinus Torvalds 10691da177e4SLinus Torvalds udelay(16*1000); /* 16 ms */ 10701da177e4SLinus Torvalds status = he_readl(he_dev, RESET_CNTL); 10711da177e4SLinus Torvalds if ((status & BOARD_RST_STATUS) == 0) { 10721da177e4SLinus Torvalds hprintk("reset failed\n"); 10731da177e4SLinus Torvalds return -EINVAL; 10741da177e4SLinus Torvalds } 10751da177e4SLinus Torvalds 10761da177e4SLinus Torvalds /* 4.5 set bus width */ 10771da177e4SLinus Torvalds host_cntl = he_readl(he_dev, HOST_CNTL); 10781da177e4SLinus Torvalds if (host_cntl & PCI_BUS_SIZE64) 10791da177e4SLinus Torvalds gen_cntl_0 |= ENBL_64; 10801da177e4SLinus Torvalds else 10811da177e4SLinus Torvalds gen_cntl_0 &= ~ENBL_64; 10821da177e4SLinus Torvalds 10831da177e4SLinus Torvalds if (disable64 == 1) { 10841da177e4SLinus Torvalds hprintk("disabling 64-bit pci bus transfers\n"); 10851da177e4SLinus Torvalds gen_cntl_0 &= ~ENBL_64; 10861da177e4SLinus Torvalds } 10871da177e4SLinus Torvalds 10881da177e4SLinus Torvalds if (gen_cntl_0 & ENBL_64) 10891da177e4SLinus Torvalds hprintk("64-bit transfers enabled\n"); 10901da177e4SLinus Torvalds 10911da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 10921da177e4SLinus Torvalds 10931da177e4SLinus Torvalds /* 4.7 read prom contents */ 10941da177e4SLinus Torvalds for (i = 0; i < PROD_ID_LEN; ++i) 10951da177e4SLinus Torvalds he_dev->prod_id[i] = read_prom_byte(he_dev, PROD_ID + i); 10961da177e4SLinus Torvalds 10971da177e4SLinus Torvalds he_dev->media = read_prom_byte(he_dev, MEDIA); 10981da177e4SLinus Torvalds 10991da177e4SLinus Torvalds for (i = 0; i < 6; ++i) 11001da177e4SLinus Torvalds dev->esi[i] = read_prom_byte(he_dev, MAC_ADDR + i); 11011da177e4SLinus Torvalds 11021da177e4SLinus Torvalds hprintk("%s%s, %x:%x:%x:%x:%x:%x\n", 11031da177e4SLinus Torvalds he_dev->prod_id, 11041da177e4SLinus Torvalds he_dev->media & 0x40 ? "SM" : "MM", 11051da177e4SLinus Torvalds dev->esi[0], 11061da177e4SLinus Torvalds dev->esi[1], 11071da177e4SLinus Torvalds dev->esi[2], 11081da177e4SLinus Torvalds dev->esi[3], 11091da177e4SLinus Torvalds dev->esi[4], 11101da177e4SLinus Torvalds dev->esi[5]); 11111da177e4SLinus Torvalds he_dev->atm_dev->link_rate = he_is622(he_dev) ? 11121da177e4SLinus Torvalds ATM_OC12_PCR : ATM_OC3_PCR; 11131da177e4SLinus Torvalds 11141da177e4SLinus Torvalds /* 4.6 set host endianess */ 11151da177e4SLinus Torvalds lb_swap = he_readl(he_dev, LB_SWAP); 11161da177e4SLinus Torvalds if (he_is622(he_dev)) 11171da177e4SLinus Torvalds lb_swap &= ~XFER_SIZE; /* 4 cells */ 11181da177e4SLinus Torvalds else 11191da177e4SLinus Torvalds lb_swap |= XFER_SIZE; /* 8 cells */ 11201da177e4SLinus Torvalds #ifdef __BIG_ENDIAN 11211da177e4SLinus Torvalds lb_swap |= DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST; 11221da177e4SLinus Torvalds #else 11231da177e4SLinus Torvalds lb_swap &= ~(DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST | 11241da177e4SLinus Torvalds DATA_WR_SWAP | DATA_RD_SWAP | DESC_RD_SWAP); 11251da177e4SLinus Torvalds #endif /* __BIG_ENDIAN */ 11261da177e4SLinus Torvalds he_writel(he_dev, lb_swap, LB_SWAP); 11271da177e4SLinus Torvalds 11281da177e4SLinus Torvalds /* 4.8 sdram controller initialization */ 11291da177e4SLinus Torvalds he_writel(he_dev, he_is622(he_dev) ? LB_64_ENB : 0x0, SDRAM_CTL); 11301da177e4SLinus Torvalds 11311da177e4SLinus Torvalds /* 4.9 initialize rnum value */ 11321da177e4SLinus Torvalds lb_swap |= SWAP_RNUM_MAX(0xf); 11331da177e4SLinus Torvalds he_writel(he_dev, lb_swap, LB_SWAP); 11341da177e4SLinus Torvalds 11351da177e4SLinus Torvalds /* 4.10 initialize the interrupt queues */ 11361da177e4SLinus Torvalds if ((err = he_init_irq(he_dev)) != 0) 11371da177e4SLinus Torvalds return err; 11381da177e4SLinus Torvalds 11391da177e4SLinus Torvalds /* 4.11 enable pci bus controller state machines */ 11401da177e4SLinus Torvalds host_cntl |= (OUTFF_ENB | CMDFF_ENB | 11411da177e4SLinus Torvalds QUICK_RD_RETRY | QUICK_WR_RETRY | PERR_INT_ENB); 11421da177e4SLinus Torvalds he_writel(he_dev, host_cntl, HOST_CNTL); 11431da177e4SLinus Torvalds 11441da177e4SLinus Torvalds gen_cntl_0 |= INT_PROC_ENBL|INIT_ENB; 11451da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 11461da177e4SLinus Torvalds 11471da177e4SLinus Torvalds /* 11481da177e4SLinus Torvalds * atm network controller initialization 11491da177e4SLinus Torvalds */ 11501da177e4SLinus Torvalds 11511da177e4SLinus Torvalds /* 5.1.1 generic configuration state */ 11521da177e4SLinus Torvalds 11531da177e4SLinus Torvalds /* 11541da177e4SLinus Torvalds * local (cell) buffer memory map 11551da177e4SLinus Torvalds * 11561da177e4SLinus Torvalds * HE155 HE622 11571da177e4SLinus Torvalds * 11581da177e4SLinus Torvalds * 0 ____________1023 bytes 0 _______________________2047 bytes 11591da177e4SLinus Torvalds * | | | | | 11601da177e4SLinus Torvalds * | utility | | rx0 | | 11611da177e4SLinus Torvalds * 5|____________| 255|___________________| u | 11621da177e4SLinus Torvalds * 6| | 256| | t | 11631da177e4SLinus Torvalds * | | | | i | 11641da177e4SLinus Torvalds * | rx0 | row | tx | l | 11651da177e4SLinus Torvalds * | | | | i | 11661da177e4SLinus Torvalds * | | 767|___________________| t | 11671da177e4SLinus Torvalds * 517|____________| 768| | y | 11681da177e4SLinus Torvalds * row 518| | | rx1 | | 11691da177e4SLinus Torvalds * | | 1023|___________________|___| 11701da177e4SLinus Torvalds * | | 11711da177e4SLinus Torvalds * | tx | 11721da177e4SLinus Torvalds * | | 11731da177e4SLinus Torvalds * | | 11741da177e4SLinus Torvalds * 1535|____________| 11751da177e4SLinus Torvalds * 1536| | 11761da177e4SLinus Torvalds * | rx1 | 11771da177e4SLinus Torvalds * 2047|____________| 11781da177e4SLinus Torvalds * 11791da177e4SLinus Torvalds */ 11801da177e4SLinus Torvalds 11811da177e4SLinus Torvalds /* total 4096 connections */ 11821da177e4SLinus Torvalds he_dev->vcibits = CONFIG_DEFAULT_VCIBITS; 11831da177e4SLinus Torvalds he_dev->vpibits = CONFIG_DEFAULT_VPIBITS; 11841da177e4SLinus Torvalds 11851da177e4SLinus Torvalds if (nvpibits != -1 && nvcibits != -1 && nvpibits+nvcibits != HE_MAXCIDBITS) { 11861da177e4SLinus Torvalds hprintk("nvpibits + nvcibits != %d\n", HE_MAXCIDBITS); 11871da177e4SLinus Torvalds return -ENODEV; 11881da177e4SLinus Torvalds } 11891da177e4SLinus Torvalds 11901da177e4SLinus Torvalds if (nvpibits != -1) { 11911da177e4SLinus Torvalds he_dev->vpibits = nvpibits; 11921da177e4SLinus Torvalds he_dev->vcibits = HE_MAXCIDBITS - nvpibits; 11931da177e4SLinus Torvalds } 11941da177e4SLinus Torvalds 11951da177e4SLinus Torvalds if (nvcibits != -1) { 11961da177e4SLinus Torvalds he_dev->vcibits = nvcibits; 11971da177e4SLinus Torvalds he_dev->vpibits = HE_MAXCIDBITS - nvcibits; 11981da177e4SLinus Torvalds } 11991da177e4SLinus Torvalds 12001da177e4SLinus Torvalds 12011da177e4SLinus Torvalds if (he_is622(he_dev)) { 12021da177e4SLinus Torvalds he_dev->cells_per_row = 40; 12031da177e4SLinus Torvalds he_dev->bytes_per_row = 2048; 12041da177e4SLinus Torvalds he_dev->r0_numrows = 256; 12051da177e4SLinus Torvalds he_dev->tx_numrows = 512; 12061da177e4SLinus Torvalds he_dev->r1_numrows = 256; 12071da177e4SLinus Torvalds he_dev->r0_startrow = 0; 12081da177e4SLinus Torvalds he_dev->tx_startrow = 256; 12091da177e4SLinus Torvalds he_dev->r1_startrow = 768; 12101da177e4SLinus Torvalds } else { 12111da177e4SLinus Torvalds he_dev->cells_per_row = 20; 12121da177e4SLinus Torvalds he_dev->bytes_per_row = 1024; 12131da177e4SLinus Torvalds he_dev->r0_numrows = 512; 12141da177e4SLinus Torvalds he_dev->tx_numrows = 1018; 12151da177e4SLinus Torvalds he_dev->r1_numrows = 512; 12161da177e4SLinus Torvalds he_dev->r0_startrow = 6; 12171da177e4SLinus Torvalds he_dev->tx_startrow = 518; 12181da177e4SLinus Torvalds he_dev->r1_startrow = 1536; 12191da177e4SLinus Torvalds } 12201da177e4SLinus Torvalds 12211da177e4SLinus Torvalds he_dev->cells_per_lbuf = 4; 12221da177e4SLinus Torvalds he_dev->buffer_limit = 4; 12231da177e4SLinus Torvalds he_dev->r0_numbuffs = he_dev->r0_numrows * 12241da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12251da177e4SLinus Torvalds if (he_dev->r0_numbuffs > 2560) 12261da177e4SLinus Torvalds he_dev->r0_numbuffs = 2560; 12271da177e4SLinus Torvalds 12281da177e4SLinus Torvalds he_dev->r1_numbuffs = he_dev->r1_numrows * 12291da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12301da177e4SLinus Torvalds if (he_dev->r1_numbuffs > 2560) 12311da177e4SLinus Torvalds he_dev->r1_numbuffs = 2560; 12321da177e4SLinus Torvalds 12331da177e4SLinus Torvalds he_dev->tx_numbuffs = he_dev->tx_numrows * 12341da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12351da177e4SLinus Torvalds if (he_dev->tx_numbuffs > 5120) 12361da177e4SLinus Torvalds he_dev->tx_numbuffs = 5120; 12371da177e4SLinus Torvalds 12381da177e4SLinus Torvalds /* 5.1.2 configure hardware dependent registers */ 12391da177e4SLinus Torvalds 12401da177e4SLinus Torvalds he_writel(he_dev, 12411da177e4SLinus Torvalds SLICE_X(0x2) | ARB_RNUM_MAX(0xf) | TH_PRTY(0x3) | 12421da177e4SLinus Torvalds RH_PRTY(0x3) | TL_PRTY(0x2) | RL_PRTY(0x1) | 12431da177e4SLinus Torvalds (he_is622(he_dev) ? BUS_MULTI(0x28) : BUS_MULTI(0x46)) | 12441da177e4SLinus Torvalds (he_is622(he_dev) ? NET_PREF(0x50) : NET_PREF(0x8c)), 12451da177e4SLinus Torvalds LBARB); 12461da177e4SLinus Torvalds 12471da177e4SLinus Torvalds he_writel(he_dev, BANK_ON | 12481da177e4SLinus Torvalds (he_is622(he_dev) ? (REF_RATE(0x384) | WIDE_DATA) : REF_RATE(0x150)), 12491da177e4SLinus Torvalds SDRAMCON); 12501da177e4SLinus Torvalds 12511da177e4SLinus Torvalds he_writel(he_dev, 12521da177e4SLinus Torvalds (he_is622(he_dev) ? RM_BANK_WAIT(1) : RM_BANK_WAIT(0)) | 12531da177e4SLinus Torvalds RM_RW_WAIT(1), RCMCONFIG); 12541da177e4SLinus Torvalds he_writel(he_dev, 12551da177e4SLinus Torvalds (he_is622(he_dev) ? TM_BANK_WAIT(2) : TM_BANK_WAIT(1)) | 12561da177e4SLinus Torvalds TM_RW_WAIT(1), TCMCONFIG); 12571da177e4SLinus Torvalds 12581da177e4SLinus Torvalds he_writel(he_dev, he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD, LB_CONFIG); 12591da177e4SLinus Torvalds 12601da177e4SLinus Torvalds he_writel(he_dev, 12611da177e4SLinus Torvalds (he_is622(he_dev) ? UT_RD_DELAY(8) : UT_RD_DELAY(0)) | 12621da177e4SLinus Torvalds (he_is622(he_dev) ? RC_UT_MODE(0) : RC_UT_MODE(1)) | 12631da177e4SLinus Torvalds RX_VALVP(he_dev->vpibits) | 12641da177e4SLinus Torvalds RX_VALVC(he_dev->vcibits), RC_CONFIG); 12651da177e4SLinus Torvalds 12661da177e4SLinus Torvalds he_writel(he_dev, DRF_THRESH(0x20) | 12671da177e4SLinus Torvalds (he_is622(he_dev) ? TX_UT_MODE(0) : TX_UT_MODE(1)) | 12681da177e4SLinus Torvalds TX_VCI_MASK(he_dev->vcibits) | 12691da177e4SLinus Torvalds LBFREE_CNT(he_dev->tx_numbuffs), TX_CONFIG); 12701da177e4SLinus Torvalds 12711da177e4SLinus Torvalds he_writel(he_dev, 0x0, TXAAL5_PROTO); 12721da177e4SLinus Torvalds 12731da177e4SLinus Torvalds he_writel(he_dev, PHY_INT_ENB | 12741da177e4SLinus Torvalds (he_is622(he_dev) ? PTMR_PRE(67 - 1) : PTMR_PRE(50 - 1)), 12751da177e4SLinus Torvalds RH_CONFIG); 12761da177e4SLinus Torvalds 12771da177e4SLinus Torvalds /* 5.1.3 initialize connection memory */ 12781da177e4SLinus Torvalds 12791da177e4SLinus Torvalds for (i = 0; i < TCM_MEM_SIZE; ++i) 12801da177e4SLinus Torvalds he_writel_tcm(he_dev, 0, i); 12811da177e4SLinus Torvalds 12821da177e4SLinus Torvalds for (i = 0; i < RCM_MEM_SIZE; ++i) 12831da177e4SLinus Torvalds he_writel_rcm(he_dev, 0, i); 12841da177e4SLinus Torvalds 12851da177e4SLinus Torvalds /* 12861da177e4SLinus Torvalds * transmit connection memory map 12871da177e4SLinus Torvalds * 12881da177e4SLinus Torvalds * tx memory 12891da177e4SLinus Torvalds * 0x0 ___________________ 12901da177e4SLinus Torvalds * | | 12911da177e4SLinus Torvalds * | | 12921da177e4SLinus Torvalds * | TSRa | 12931da177e4SLinus Torvalds * | | 12941da177e4SLinus Torvalds * | | 12951da177e4SLinus Torvalds * 0x8000|___________________| 12961da177e4SLinus Torvalds * | | 12971da177e4SLinus Torvalds * | TSRb | 12981da177e4SLinus Torvalds * 0xc000|___________________| 12991da177e4SLinus Torvalds * | | 13001da177e4SLinus Torvalds * | TSRc | 13011da177e4SLinus Torvalds * 0xe000|___________________| 13021da177e4SLinus Torvalds * | TSRd | 13031da177e4SLinus Torvalds * 0xf000|___________________| 13041da177e4SLinus Torvalds * | tmABR | 13051da177e4SLinus Torvalds * 0x10000|___________________| 13061da177e4SLinus Torvalds * | | 13071da177e4SLinus Torvalds * | tmTPD | 13081da177e4SLinus Torvalds * |___________________| 13091da177e4SLinus Torvalds * | | 13101da177e4SLinus Torvalds * .... 13111da177e4SLinus Torvalds * 0x1ffff|___________________| 13121da177e4SLinus Torvalds * 13131da177e4SLinus Torvalds * 13141da177e4SLinus Torvalds */ 13151da177e4SLinus Torvalds 13161da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRB, TSRB_BA); 13171da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRC, TSRC_BA); 13181da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRD, TSRD_BA); 13191da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TMABR, TMABR_BA); 13201da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TPDBA, TPD_BA); 13211da177e4SLinus Torvalds 13221da177e4SLinus Torvalds 13231da177e4SLinus Torvalds /* 13241da177e4SLinus Torvalds * receive connection memory map 13251da177e4SLinus Torvalds * 13261da177e4SLinus Torvalds * 0x0 ___________________ 13271da177e4SLinus Torvalds * | | 13281da177e4SLinus Torvalds * | | 13291da177e4SLinus Torvalds * | RSRa | 13301da177e4SLinus Torvalds * | | 13311da177e4SLinus Torvalds * | | 13321da177e4SLinus Torvalds * 0x8000|___________________| 13331da177e4SLinus Torvalds * | | 13341da177e4SLinus Torvalds * | rx0/1 | 13351da177e4SLinus Torvalds * | LBM | link lists of local 13361da177e4SLinus Torvalds * | tx | buffer memory 13371da177e4SLinus Torvalds * | | 13381da177e4SLinus Torvalds * 0xd000|___________________| 13391da177e4SLinus Torvalds * | | 13401da177e4SLinus Torvalds * | rmABR | 13411da177e4SLinus Torvalds * 0xe000|___________________| 13421da177e4SLinus Torvalds * | | 13431da177e4SLinus Torvalds * | RSRb | 13441da177e4SLinus Torvalds * |___________________| 13451da177e4SLinus Torvalds * | | 13461da177e4SLinus Torvalds * .... 13471da177e4SLinus Torvalds * 0xffff|___________________| 13481da177e4SLinus Torvalds */ 13491da177e4SLinus Torvalds 13501da177e4SLinus Torvalds he_writel(he_dev, 0x08000, RCMLBM_BA); 13511da177e4SLinus Torvalds he_writel(he_dev, 0x0e000, RCMRSRB_BA); 13521da177e4SLinus Torvalds he_writel(he_dev, 0x0d800, RCMABR_BA); 13531da177e4SLinus Torvalds 13541da177e4SLinus Torvalds /* 5.1.4 initialize local buffer free pools linked lists */ 13551da177e4SLinus Torvalds 13561da177e4SLinus Torvalds he_init_rx_lbfp0(he_dev); 13571da177e4SLinus Torvalds he_init_rx_lbfp1(he_dev); 13581da177e4SLinus Torvalds 13591da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_H); 13601da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_T); 13611da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_H2); 13621da177e4SLinus Torvalds 13631da177e4SLinus Torvalds he_writel(he_dev, 512, RXTHRSH); /* 10% of r0+r1 buffers */ 13641da177e4SLinus Torvalds he_writel(he_dev, 256, LITHRSH); /* 5% of r0+r1 buffers */ 13651da177e4SLinus Torvalds 13661da177e4SLinus Torvalds he_init_tx_lbfp(he_dev); 13671da177e4SLinus Torvalds 13681da177e4SLinus Torvalds he_writel(he_dev, he_is622(he_dev) ? 0x104780 : 0x800, UBUFF_BA); 13691da177e4SLinus Torvalds 13701da177e4SLinus Torvalds /* 5.1.5 initialize intermediate receive queues */ 13711da177e4SLinus Torvalds 13721da177e4SLinus Torvalds if (he_is622(he_dev)) { 13731da177e4SLinus Torvalds he_writel(he_dev, 0x000f, G0_INMQ_S); 13741da177e4SLinus Torvalds he_writel(he_dev, 0x200f, G0_INMQ_L); 13751da177e4SLinus Torvalds 13761da177e4SLinus Torvalds he_writel(he_dev, 0x001f, G1_INMQ_S); 13771da177e4SLinus Torvalds he_writel(he_dev, 0x201f, G1_INMQ_L); 13781da177e4SLinus Torvalds 13791da177e4SLinus Torvalds he_writel(he_dev, 0x002f, G2_INMQ_S); 13801da177e4SLinus Torvalds he_writel(he_dev, 0x202f, G2_INMQ_L); 13811da177e4SLinus Torvalds 13821da177e4SLinus Torvalds he_writel(he_dev, 0x003f, G3_INMQ_S); 13831da177e4SLinus Torvalds he_writel(he_dev, 0x203f, G3_INMQ_L); 13841da177e4SLinus Torvalds 13851da177e4SLinus Torvalds he_writel(he_dev, 0x004f, G4_INMQ_S); 13861da177e4SLinus Torvalds he_writel(he_dev, 0x204f, G4_INMQ_L); 13871da177e4SLinus Torvalds 13881da177e4SLinus Torvalds he_writel(he_dev, 0x005f, G5_INMQ_S); 13891da177e4SLinus Torvalds he_writel(he_dev, 0x205f, G5_INMQ_L); 13901da177e4SLinus Torvalds 13911da177e4SLinus Torvalds he_writel(he_dev, 0x006f, G6_INMQ_S); 13921da177e4SLinus Torvalds he_writel(he_dev, 0x206f, G6_INMQ_L); 13931da177e4SLinus Torvalds 13941da177e4SLinus Torvalds he_writel(he_dev, 0x007f, G7_INMQ_S); 13951da177e4SLinus Torvalds he_writel(he_dev, 0x207f, G7_INMQ_L); 13961da177e4SLinus Torvalds } else { 13971da177e4SLinus Torvalds he_writel(he_dev, 0x0000, G0_INMQ_S); 13981da177e4SLinus Torvalds he_writel(he_dev, 0x0008, G0_INMQ_L); 13991da177e4SLinus Torvalds 14001da177e4SLinus Torvalds he_writel(he_dev, 0x0001, G1_INMQ_S); 14011da177e4SLinus Torvalds he_writel(he_dev, 0x0009, G1_INMQ_L); 14021da177e4SLinus Torvalds 14031da177e4SLinus Torvalds he_writel(he_dev, 0x0002, G2_INMQ_S); 14041da177e4SLinus Torvalds he_writel(he_dev, 0x000a, G2_INMQ_L); 14051da177e4SLinus Torvalds 14061da177e4SLinus Torvalds he_writel(he_dev, 0x0003, G3_INMQ_S); 14071da177e4SLinus Torvalds he_writel(he_dev, 0x000b, G3_INMQ_L); 14081da177e4SLinus Torvalds 14091da177e4SLinus Torvalds he_writel(he_dev, 0x0004, G4_INMQ_S); 14101da177e4SLinus Torvalds he_writel(he_dev, 0x000c, G4_INMQ_L); 14111da177e4SLinus Torvalds 14121da177e4SLinus Torvalds he_writel(he_dev, 0x0005, G5_INMQ_S); 14131da177e4SLinus Torvalds he_writel(he_dev, 0x000d, G5_INMQ_L); 14141da177e4SLinus Torvalds 14151da177e4SLinus Torvalds he_writel(he_dev, 0x0006, G6_INMQ_S); 14161da177e4SLinus Torvalds he_writel(he_dev, 0x000e, G6_INMQ_L); 14171da177e4SLinus Torvalds 14181da177e4SLinus Torvalds he_writel(he_dev, 0x0007, G7_INMQ_S); 14191da177e4SLinus Torvalds he_writel(he_dev, 0x000f, G7_INMQ_L); 14201da177e4SLinus Torvalds } 14211da177e4SLinus Torvalds 14221da177e4SLinus Torvalds /* 5.1.6 application tunable parameters */ 14231da177e4SLinus Torvalds 14241da177e4SLinus Torvalds he_writel(he_dev, 0x0, MCC); 14251da177e4SLinus Torvalds he_writel(he_dev, 0x0, OEC); 14261da177e4SLinus Torvalds he_writel(he_dev, 0x0, DCC); 14271da177e4SLinus Torvalds he_writel(he_dev, 0x0, CEC); 14281da177e4SLinus Torvalds 14291da177e4SLinus Torvalds /* 5.1.7 cs block initialization */ 14301da177e4SLinus Torvalds 14311da177e4SLinus Torvalds he_init_cs_block(he_dev); 14321da177e4SLinus Torvalds 14331da177e4SLinus Torvalds /* 5.1.8 cs block connection memory initialization */ 14341da177e4SLinus Torvalds 14351da177e4SLinus Torvalds if (he_init_cs_block_rcm(he_dev) < 0) 14361da177e4SLinus Torvalds return -ENOMEM; 14371da177e4SLinus Torvalds 14381da177e4SLinus Torvalds /* 5.1.10 initialize host structures */ 14391da177e4SLinus Torvalds 14401da177e4SLinus Torvalds he_init_tpdrq(he_dev); 14411da177e4SLinus Torvalds 14421da177e4SLinus Torvalds he_dev->tpd_pool = pci_pool_create("tpd", he_dev->pci_dev, 14431da177e4SLinus Torvalds sizeof(struct he_tpd), TPD_ALIGNMENT, 0); 14441da177e4SLinus Torvalds if (he_dev->tpd_pool == NULL) { 14451da177e4SLinus Torvalds hprintk("unable to create tpd pci_pool\n"); 14461da177e4SLinus Torvalds return -ENOMEM; 14471da177e4SLinus Torvalds } 14481da177e4SLinus Torvalds 14491da177e4SLinus Torvalds INIT_LIST_HEAD(&he_dev->outstanding_tpds); 14501da177e4SLinus Torvalds 14511da177e4SLinus Torvalds if (he_init_group(he_dev, 0) != 0) 14521da177e4SLinus Torvalds return -ENOMEM; 14531da177e4SLinus Torvalds 14541da177e4SLinus Torvalds for (group = 1; group < HE_NUM_GROUPS; ++group) { 14551da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_S + (group * 32)); 14561da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_T + (group * 32)); 14571da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_QI + (group * 32)); 14581da177e4SLinus Torvalds he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 14591da177e4SLinus Torvalds G0_RBPS_BS + (group * 32)); 14601da177e4SLinus Torvalds 14611da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_S + (group * 32)); 14621da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_T + (group * 32)); 14631da177e4SLinus Torvalds he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 14641da177e4SLinus Torvalds G0_RBPL_QI + (group * 32)); 14651da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_BS + (group * 32)); 14661da177e4SLinus Torvalds 14671da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_ST + (group * 16)); 14681da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_H + (group * 16)); 14691da177e4SLinus Torvalds he_writel(he_dev, RBRQ_THRESH(0x1) | RBRQ_SIZE(0x0), 14701da177e4SLinus Torvalds G0_RBRQ_Q + (group * 16)); 14711da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_I + (group * 16)); 14721da177e4SLinus Torvalds 14731da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_B_T + (group * 16)); 14741da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_H + (group * 16)); 14751da177e4SLinus Torvalds he_writel(he_dev, TBRQ_THRESH(0x1), 14761da177e4SLinus Torvalds G0_TBRQ_THRESH + (group * 16)); 14771da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_S + (group * 16)); 14781da177e4SLinus Torvalds } 14791da177e4SLinus Torvalds 14801da177e4SLinus Torvalds /* host status page */ 14811da177e4SLinus Torvalds 14821da177e4SLinus Torvalds he_dev->hsp = pci_alloc_consistent(he_dev->pci_dev, 14831da177e4SLinus Torvalds sizeof(struct he_hsp), &he_dev->hsp_phys); 14841da177e4SLinus Torvalds if (he_dev->hsp == NULL) { 14851da177e4SLinus Torvalds hprintk("failed to allocate host status page\n"); 14861da177e4SLinus Torvalds return -ENOMEM; 14871da177e4SLinus Torvalds } 14881da177e4SLinus Torvalds memset(he_dev->hsp, 0, sizeof(struct he_hsp)); 14891da177e4SLinus Torvalds he_writel(he_dev, he_dev->hsp_phys, HSP_BA); 14901da177e4SLinus Torvalds 14911da177e4SLinus Torvalds /* initialize framer */ 14921da177e4SLinus Torvalds 14931da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 1494059e3779SChas Williams if (he_isMM(he_dev)) 14951da177e4SLinus Torvalds suni_init(he_dev->atm_dev); 14961da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->start) 14971da177e4SLinus Torvalds he_dev->atm_dev->phy->start(he_dev->atm_dev); 14981da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 14991da177e4SLinus Torvalds 15001da177e4SLinus Torvalds if (sdh) { 15011da177e4SLinus Torvalds /* this really should be in suni.c but for now... */ 15021da177e4SLinus Torvalds int val; 15031da177e4SLinus Torvalds 15041da177e4SLinus Torvalds val = he_phy_get(he_dev->atm_dev, SUNI_TPOP_APM); 15051da177e4SLinus Torvalds val = (val & ~SUNI_TPOP_APM_S) | (SUNI_TPOP_S_SDH << SUNI_TPOP_APM_S_SHIFT); 15061da177e4SLinus Torvalds he_phy_put(he_dev->atm_dev, val, SUNI_TPOP_APM); 150765c3e471SChas Williams he_phy_put(he_dev->atm_dev, SUNI_TACP_IUCHP_CLP, SUNI_TACP_IUCHP); 15081da177e4SLinus Torvalds } 15091da177e4SLinus Torvalds 15101da177e4SLinus Torvalds /* 5.1.12 enable transmit and receive */ 15111da177e4SLinus Torvalds 15121da177e4SLinus Torvalds reg = he_readl_mbox(he_dev, CS_ERCTL0); 15131da177e4SLinus Torvalds reg |= TX_ENABLE|ER_ENABLE; 15141da177e4SLinus Torvalds he_writel_mbox(he_dev, reg, CS_ERCTL0); 15151da177e4SLinus Torvalds 15161da177e4SLinus Torvalds reg = he_readl(he_dev, RC_CONFIG); 15171da177e4SLinus Torvalds reg |= RX_ENABLE; 15181da177e4SLinus Torvalds he_writel(he_dev, reg, RC_CONFIG); 15191da177e4SLinus Torvalds 15201da177e4SLinus Torvalds for (i = 0; i < HE_NUM_CS_STPER; ++i) { 15211da177e4SLinus Torvalds he_dev->cs_stper[i].inuse = 0; 15221da177e4SLinus Torvalds he_dev->cs_stper[i].pcr = -1; 15231da177e4SLinus Torvalds } 15241da177e4SLinus Torvalds he_dev->total_bw = 0; 15251da177e4SLinus Torvalds 15261da177e4SLinus Torvalds 15271da177e4SLinus Torvalds /* atm linux initialization */ 15281da177e4SLinus Torvalds 15291da177e4SLinus Torvalds he_dev->atm_dev->ci_range.vpi_bits = he_dev->vpibits; 15301da177e4SLinus Torvalds he_dev->atm_dev->ci_range.vci_bits = he_dev->vcibits; 15311da177e4SLinus Torvalds 15321da177e4SLinus Torvalds he_dev->irq_peak = 0; 15331da177e4SLinus Torvalds he_dev->rbrq_peak = 0; 15341da177e4SLinus Torvalds he_dev->rbpl_peak = 0; 15351da177e4SLinus Torvalds he_dev->tbrq_peak = 0; 15361da177e4SLinus Torvalds 15371da177e4SLinus Torvalds HPRINTK("hell bent for leather!\n"); 15381da177e4SLinus Torvalds 15391da177e4SLinus Torvalds return 0; 15401da177e4SLinus Torvalds } 15411da177e4SLinus Torvalds 15421da177e4SLinus Torvalds static void 15431da177e4SLinus Torvalds he_stop(struct he_dev *he_dev) 15441da177e4SLinus Torvalds { 1545e623d625Schas williams - CONTRACTOR struct he_buff *heb, *next; 15461da177e4SLinus Torvalds struct pci_dev *pci_dev; 1547e623d625Schas williams - CONTRACTOR u32 gen_cntl_0, reg; 1548e623d625Schas williams - CONTRACTOR u16 command; 15491da177e4SLinus Torvalds 15501da177e4SLinus Torvalds pci_dev = he_dev->pci_dev; 15511da177e4SLinus Torvalds 15521da177e4SLinus Torvalds /* disable interrupts */ 15531da177e4SLinus Torvalds 15541da177e4SLinus Torvalds if (he_dev->membase) { 15551da177e4SLinus Torvalds pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0); 15561da177e4SLinus Torvalds gen_cntl_0 &= ~(INT_PROC_ENBL | INIT_ENB); 15571da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 15581da177e4SLinus Torvalds 15591da177e4SLinus Torvalds tasklet_disable(&he_dev->tasklet); 15601da177e4SLinus Torvalds 15611da177e4SLinus Torvalds /* disable recv and transmit */ 15621da177e4SLinus Torvalds 15631da177e4SLinus Torvalds reg = he_readl_mbox(he_dev, CS_ERCTL0); 15641da177e4SLinus Torvalds reg &= ~(TX_ENABLE|ER_ENABLE); 15651da177e4SLinus Torvalds he_writel_mbox(he_dev, reg, CS_ERCTL0); 15661da177e4SLinus Torvalds 15671da177e4SLinus Torvalds reg = he_readl(he_dev, RC_CONFIG); 15681da177e4SLinus Torvalds reg &= ~(RX_ENABLE); 15691da177e4SLinus Torvalds he_writel(he_dev, reg, RC_CONFIG); 15701da177e4SLinus Torvalds } 15711da177e4SLinus Torvalds 15721da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 15731da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->stop) 15741da177e4SLinus Torvalds he_dev->atm_dev->phy->stop(he_dev->atm_dev); 15751da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 15761da177e4SLinus Torvalds 15771da177e4SLinus Torvalds if (he_dev->irq) 15781da177e4SLinus Torvalds free_irq(he_dev->irq, he_dev); 15791da177e4SLinus Torvalds 15801da177e4SLinus Torvalds if (he_dev->irq_base) 15811da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, (CONFIG_IRQ_SIZE+1) 15821da177e4SLinus Torvalds * sizeof(struct he_irq), he_dev->irq_base, he_dev->irq_phys); 15831da177e4SLinus Torvalds 15841da177e4SLinus Torvalds if (he_dev->hsp) 15851da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, sizeof(struct he_hsp), 15861da177e4SLinus Torvalds he_dev->hsp, he_dev->hsp_phys); 15871da177e4SLinus Torvalds 15881da177e4SLinus Torvalds if (he_dev->rbpl_base) { 1589e623d625Schas williams - CONTRACTOR list_for_each_entry_safe(heb, next, &he_dev->rbpl_outstanding, entry) 1590e623d625Schas williams - CONTRACTOR pci_pool_free(he_dev->rbpl_pool, heb, heb->mapping); 15917d1f8db4SJorge Boncompte 15921da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBPL_SIZE 15931da177e4SLinus Torvalds * sizeof(struct he_rbp), he_dev->rbpl_base, he_dev->rbpl_phys); 15941da177e4SLinus Torvalds } 15951da177e4SLinus Torvalds 1596e623d625Schas williams - CONTRACTOR kfree(he_dev->rbpl_virt); 1597e623d625Schas williams - CONTRACTOR kfree(he_dev->rbpl_table); 1598e623d625Schas williams - CONTRACTOR 15991da177e4SLinus Torvalds if (he_dev->rbpl_pool) 16001da177e4SLinus Torvalds pci_pool_destroy(he_dev->rbpl_pool); 16011da177e4SLinus Torvalds 16021da177e4SLinus Torvalds if (he_dev->rbrq_base) 16031da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), 16041da177e4SLinus Torvalds he_dev->rbrq_base, he_dev->rbrq_phys); 16051da177e4SLinus Torvalds 16061da177e4SLinus Torvalds if (he_dev->tbrq_base) 16071da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), 16081da177e4SLinus Torvalds he_dev->tbrq_base, he_dev->tbrq_phys); 16091da177e4SLinus Torvalds 16101da177e4SLinus Torvalds if (he_dev->tpdrq_base) 16111da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), 16121da177e4SLinus Torvalds he_dev->tpdrq_base, he_dev->tpdrq_phys); 16131da177e4SLinus Torvalds 16141da177e4SLinus Torvalds if (he_dev->tpd_pool) 16151da177e4SLinus Torvalds pci_pool_destroy(he_dev->tpd_pool); 16161da177e4SLinus Torvalds 16171da177e4SLinus Torvalds if (he_dev->pci_dev) { 16181da177e4SLinus Torvalds pci_read_config_word(he_dev->pci_dev, PCI_COMMAND, &command); 16191da177e4SLinus Torvalds command &= ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); 16201da177e4SLinus Torvalds pci_write_config_word(he_dev->pci_dev, PCI_COMMAND, command); 16211da177e4SLinus Torvalds } 16221da177e4SLinus Torvalds 16231da177e4SLinus Torvalds if (he_dev->membase) 16241da177e4SLinus Torvalds iounmap(he_dev->membase); 16251da177e4SLinus Torvalds } 16261da177e4SLinus Torvalds 16271da177e4SLinus Torvalds static struct he_tpd * 16281da177e4SLinus Torvalds __alloc_tpd(struct he_dev *he_dev) 16291da177e4SLinus Torvalds { 16301da177e4SLinus Torvalds struct he_tpd *tpd; 1631e623d625Schas williams - CONTRACTOR dma_addr_t mapping; 16321da177e4SLinus Torvalds 1633e623d625Schas williams - CONTRACTOR tpd = pci_pool_alloc(he_dev->tpd_pool, GFP_ATOMIC|GFP_DMA, &mapping); 16341da177e4SLinus Torvalds if (tpd == NULL) 16351da177e4SLinus Torvalds return NULL; 16361da177e4SLinus Torvalds 1637e623d625Schas williams - CONTRACTOR tpd->status = TPD_ADDR(mapping); 16381da177e4SLinus Torvalds tpd->reserved = 0; 16391da177e4SLinus Torvalds tpd->iovec[0].addr = 0; tpd->iovec[0].len = 0; 16401da177e4SLinus Torvalds tpd->iovec[1].addr = 0; tpd->iovec[1].len = 0; 16411da177e4SLinus Torvalds tpd->iovec[2].addr = 0; tpd->iovec[2].len = 0; 16421da177e4SLinus Torvalds 16431da177e4SLinus Torvalds return tpd; 16441da177e4SLinus Torvalds } 16451da177e4SLinus Torvalds 16461da177e4SLinus Torvalds #define AAL5_LEN(buf,len) \ 16471da177e4SLinus Torvalds ((((unsigned char *)(buf))[(len)-6] << 8) | \ 16481da177e4SLinus Torvalds (((unsigned char *)(buf))[(len)-5])) 16491da177e4SLinus Torvalds 16501da177e4SLinus Torvalds /* 2.10.1.2 receive 16511da177e4SLinus Torvalds * 16521da177e4SLinus Torvalds * aal5 packets can optionally return the tcp checksum in the lower 16531da177e4SLinus Torvalds * 16 bits of the crc (RSR0_TCP_CKSUM) 16541da177e4SLinus Torvalds */ 16551da177e4SLinus Torvalds 16561da177e4SLinus Torvalds #define TCP_CKSUM(buf,len) \ 16571da177e4SLinus Torvalds ((((unsigned char *)(buf))[(len)-2] << 8) | \ 16581da177e4SLinus Torvalds (((unsigned char *)(buf))[(len-1)])) 16591da177e4SLinus Torvalds 16601da177e4SLinus Torvalds static int 16611da177e4SLinus Torvalds he_service_rbrq(struct he_dev *he_dev, int group) 16621da177e4SLinus Torvalds { 16631da177e4SLinus Torvalds struct he_rbrq *rbrq_tail = (struct he_rbrq *) 16641da177e4SLinus Torvalds ((unsigned long)he_dev->rbrq_base | 16651da177e4SLinus Torvalds he_dev->hsp->group[group].rbrq_tail); 16661da177e4SLinus Torvalds unsigned cid, lastcid = -1; 16671da177e4SLinus Torvalds struct sk_buff *skb; 16681da177e4SLinus Torvalds struct atm_vcc *vcc = NULL; 16691da177e4SLinus Torvalds struct he_vcc *he_vcc; 1670e623d625Schas williams - CONTRACTOR struct he_buff *heb, *next; 1671e623d625Schas williams - CONTRACTOR int i; 16721da177e4SLinus Torvalds int pdus_assembled = 0; 16731da177e4SLinus Torvalds int updated = 0; 16741da177e4SLinus Torvalds 16751da177e4SLinus Torvalds read_lock(&vcc_sklist_lock); 16761da177e4SLinus Torvalds while (he_dev->rbrq_head != rbrq_tail) { 16771da177e4SLinus Torvalds ++updated; 16781da177e4SLinus Torvalds 16791da177e4SLinus Torvalds HPRINTK("%p rbrq%d 0x%x len=%d cid=0x%x %s%s%s%s%s%s\n", 16801da177e4SLinus Torvalds he_dev->rbrq_head, group, 16811da177e4SLinus Torvalds RBRQ_ADDR(he_dev->rbrq_head), 16821da177e4SLinus Torvalds RBRQ_BUFLEN(he_dev->rbrq_head), 16831da177e4SLinus Torvalds RBRQ_CID(he_dev->rbrq_head), 16841da177e4SLinus Torvalds RBRQ_CRC_ERR(he_dev->rbrq_head) ? " CRC_ERR" : "", 16851da177e4SLinus Torvalds RBRQ_LEN_ERR(he_dev->rbrq_head) ? " LEN_ERR" : "", 16861da177e4SLinus Torvalds RBRQ_END_PDU(he_dev->rbrq_head) ? " END_PDU" : "", 16871da177e4SLinus Torvalds RBRQ_AAL5_PROT(he_dev->rbrq_head) ? " AAL5_PROT" : "", 16881da177e4SLinus Torvalds RBRQ_CON_CLOSED(he_dev->rbrq_head) ? " CON_CLOSED" : "", 16891da177e4SLinus Torvalds RBRQ_HBUF_ERR(he_dev->rbrq_head) ? " HBUF_ERR" : ""); 16901da177e4SLinus Torvalds 1691e623d625Schas williams - CONTRACTOR i = RBRQ_ADDR(he_dev->rbrq_head) >> RBP_IDX_OFFSET; 1692e623d625Schas williams - CONTRACTOR heb = he_dev->rbpl_virt[i]; 16931da177e4SLinus Torvalds 16941da177e4SLinus Torvalds cid = RBRQ_CID(he_dev->rbrq_head); 16951da177e4SLinus Torvalds if (cid != lastcid) 16961da177e4SLinus Torvalds vcc = __find_vcc(he_dev, cid); 16971da177e4SLinus Torvalds lastcid = cid; 16981da177e4SLinus Torvalds 1699e623d625Schas williams - CONTRACTOR if (vcc == NULL || (he_vcc = HE_VCC(vcc)) == NULL) { 1700e623d625Schas williams - CONTRACTOR hprintk("vcc/he_vcc == NULL (cid 0x%x)\n", cid); 1701e623d625Schas williams - CONTRACTOR if (!RBRQ_HBUF_ERR(he_dev->rbrq_head)) { 1702e623d625Schas williams - CONTRACTOR clear_bit(i, he_dev->rbpl_table); 1703e623d625Schas williams - CONTRACTOR list_del(&heb->entry); 1704e623d625Schas williams - CONTRACTOR pci_pool_free(he_dev->rbpl_pool, heb, heb->mapping); 17051da177e4SLinus Torvalds } 17061da177e4SLinus Torvalds 17071da177e4SLinus Torvalds goto next_rbrq_entry; 17081da177e4SLinus Torvalds } 17091da177e4SLinus Torvalds 17101da177e4SLinus Torvalds if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) { 17111da177e4SLinus Torvalds hprintk("HBUF_ERR! (cid 0x%x)\n", cid); 17121da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 17131da177e4SLinus Torvalds goto return_host_buffers; 17141da177e4SLinus Torvalds } 17151da177e4SLinus Torvalds 1716e623d625Schas williams - CONTRACTOR heb->len = RBRQ_BUFLEN(he_dev->rbrq_head) * 4; 1717e623d625Schas williams - CONTRACTOR clear_bit(i, he_dev->rbpl_table); 1718e623d625Schas williams - CONTRACTOR list_move_tail(&heb->entry, &he_vcc->buffers); 1719e623d625Schas williams - CONTRACTOR he_vcc->pdu_len += heb->len; 17201da177e4SLinus Torvalds 17211da177e4SLinus Torvalds if (RBRQ_CON_CLOSED(he_dev->rbrq_head)) { 17221da177e4SLinus Torvalds lastcid = -1; 17231da177e4SLinus Torvalds HPRINTK("wake_up rx_waitq (cid 0x%x)\n", cid); 17241da177e4SLinus Torvalds wake_up(&he_vcc->rx_waitq); 17251da177e4SLinus Torvalds goto return_host_buffers; 17261da177e4SLinus Torvalds } 17271da177e4SLinus Torvalds 17281da177e4SLinus Torvalds if (!RBRQ_END_PDU(he_dev->rbrq_head)) 17291da177e4SLinus Torvalds goto next_rbrq_entry; 17301da177e4SLinus Torvalds 17311da177e4SLinus Torvalds if (RBRQ_LEN_ERR(he_dev->rbrq_head) 17321da177e4SLinus Torvalds || RBRQ_CRC_ERR(he_dev->rbrq_head)) { 17331da177e4SLinus Torvalds HPRINTK("%s%s (%d.%d)\n", 17341da177e4SLinus Torvalds RBRQ_CRC_ERR(he_dev->rbrq_head) 17351da177e4SLinus Torvalds ? "CRC_ERR " : "", 17361da177e4SLinus Torvalds RBRQ_LEN_ERR(he_dev->rbrq_head) 17371da177e4SLinus Torvalds ? "LEN_ERR" : "", 17381da177e4SLinus Torvalds vcc->vpi, vcc->vci); 17391da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 17401da177e4SLinus Torvalds goto return_host_buffers; 17411da177e4SLinus Torvalds } 17421da177e4SLinus Torvalds 17431da177e4SLinus Torvalds skb = atm_alloc_charge(vcc, he_vcc->pdu_len + rx_skb_reserve, 17441da177e4SLinus Torvalds GFP_ATOMIC); 17451da177e4SLinus Torvalds if (!skb) { 17461da177e4SLinus Torvalds HPRINTK("charge failed (%d.%d)\n", vcc->vpi, vcc->vci); 17471da177e4SLinus Torvalds goto return_host_buffers; 17481da177e4SLinus Torvalds } 17491da177e4SLinus Torvalds 17501da177e4SLinus Torvalds if (rx_skb_reserve > 0) 17511da177e4SLinus Torvalds skb_reserve(skb, rx_skb_reserve); 17521da177e4SLinus Torvalds 1753a61bbcf2SPatrick McHardy __net_timestamp(skb); 17541da177e4SLinus Torvalds 1755e623d625Schas williams - CONTRACTOR list_for_each_entry(heb, &he_vcc->buffers, entry) 1756e623d625Schas williams - CONTRACTOR memcpy(skb_put(skb, heb->len), &heb->data, heb->len); 17571da177e4SLinus Torvalds 17581da177e4SLinus Torvalds switch (vcc->qos.aal) { 17591da177e4SLinus Torvalds case ATM_AAL0: 17601da177e4SLinus Torvalds /* 2.10.1.5 raw cell receive */ 17611da177e4SLinus Torvalds skb->len = ATM_AAL0_SDU; 176227a884dcSArnaldo Carvalho de Melo skb_set_tail_pointer(skb, skb->len); 17631da177e4SLinus Torvalds break; 17641da177e4SLinus Torvalds case ATM_AAL5: 17651da177e4SLinus Torvalds /* 2.10.1.2 aal5 receive */ 17661da177e4SLinus Torvalds 17671da177e4SLinus Torvalds skb->len = AAL5_LEN(skb->data, he_vcc->pdu_len); 176827a884dcSArnaldo Carvalho de Melo skb_set_tail_pointer(skb, skb->len); 17691da177e4SLinus Torvalds #ifdef USE_CHECKSUM_HW 17701da177e4SLinus Torvalds if (vcc->vpi == 0 && vcc->vci >= ATM_NOT_RSV_VCI) { 177184fa7933SPatrick McHardy skb->ip_summed = CHECKSUM_COMPLETE; 17721da177e4SLinus Torvalds skb->csum = TCP_CKSUM(skb->data, 17731da177e4SLinus Torvalds he_vcc->pdu_len); 17741da177e4SLinus Torvalds } 17751da177e4SLinus Torvalds #endif 17761da177e4SLinus Torvalds break; 17771da177e4SLinus Torvalds } 17781da177e4SLinus Torvalds 17791da177e4SLinus Torvalds #ifdef should_never_happen 17801da177e4SLinus Torvalds if (skb->len > vcc->qos.rxtp.max_sdu) 17811da177e4SLinus Torvalds hprintk("pdu_len (%d) > vcc->qos.rxtp.max_sdu (%d)! cid 0x%x\n", skb->len, vcc->qos.rxtp.max_sdu, cid); 17821da177e4SLinus Torvalds #endif 17831da177e4SLinus Torvalds 17841da177e4SLinus Torvalds #ifdef notdef 17851da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 17861da177e4SLinus Torvalds #endif 17877f81dc00SChas Williams spin_unlock(&he_dev->global_lock); 17881da177e4SLinus Torvalds vcc->push(vcc, skb); 17897f81dc00SChas Williams spin_lock(&he_dev->global_lock); 17901da177e4SLinus Torvalds 17911da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 17921da177e4SLinus Torvalds 17931da177e4SLinus Torvalds return_host_buffers: 17941da177e4SLinus Torvalds ++pdus_assembled; 17951da177e4SLinus Torvalds 1796e623d625Schas williams - CONTRACTOR list_for_each_entry_safe(heb, next, &he_vcc->buffers, entry) 1797e623d625Schas williams - CONTRACTOR pci_pool_free(he_dev->rbpl_pool, heb, heb->mapping); 1798e623d625Schas williams - CONTRACTOR INIT_LIST_HEAD(&he_vcc->buffers); 17991da177e4SLinus Torvalds he_vcc->pdu_len = 0; 18001da177e4SLinus Torvalds 18011da177e4SLinus Torvalds next_rbrq_entry: 18021da177e4SLinus Torvalds he_dev->rbrq_head = (struct he_rbrq *) 18031da177e4SLinus Torvalds ((unsigned long) he_dev->rbrq_base | 1804e60c5e14SDavid S. Miller RBRQ_MASK(he_dev->rbrq_head + 1)); 18051da177e4SLinus Torvalds 18061da177e4SLinus Torvalds } 18071da177e4SLinus Torvalds read_unlock(&vcc_sklist_lock); 18081da177e4SLinus Torvalds 18091da177e4SLinus Torvalds if (updated) { 18101da177e4SLinus Torvalds if (updated > he_dev->rbrq_peak) 18111da177e4SLinus Torvalds he_dev->rbrq_peak = updated; 18121da177e4SLinus Torvalds 18131da177e4SLinus Torvalds he_writel(he_dev, RBRQ_MASK(he_dev->rbrq_head), 18141da177e4SLinus Torvalds G0_RBRQ_H + (group * 16)); 18151da177e4SLinus Torvalds } 18161da177e4SLinus Torvalds 18171da177e4SLinus Torvalds return pdus_assembled; 18181da177e4SLinus Torvalds } 18191da177e4SLinus Torvalds 18201da177e4SLinus Torvalds static void 18211da177e4SLinus Torvalds he_service_tbrq(struct he_dev *he_dev, int group) 18221da177e4SLinus Torvalds { 18231da177e4SLinus Torvalds struct he_tbrq *tbrq_tail = (struct he_tbrq *) 18241da177e4SLinus Torvalds ((unsigned long)he_dev->tbrq_base | 18251da177e4SLinus Torvalds he_dev->hsp->group[group].tbrq_tail); 18261da177e4SLinus Torvalds struct he_tpd *tpd; 18271da177e4SLinus Torvalds int slot, updated = 0; 18281da177e4SLinus Torvalds struct he_tpd *__tpd; 18291da177e4SLinus Torvalds 18301da177e4SLinus Torvalds /* 2.1.6 transmit buffer return queue */ 18311da177e4SLinus Torvalds 18321da177e4SLinus Torvalds while (he_dev->tbrq_head != tbrq_tail) { 18331da177e4SLinus Torvalds ++updated; 18341da177e4SLinus Torvalds 18351da177e4SLinus Torvalds HPRINTK("tbrq%d 0x%x%s%s\n", 18361da177e4SLinus Torvalds group, 18371da177e4SLinus Torvalds TBRQ_TPD(he_dev->tbrq_head), 18381da177e4SLinus Torvalds TBRQ_EOS(he_dev->tbrq_head) ? " EOS" : "", 18391da177e4SLinus Torvalds TBRQ_MULTIPLE(he_dev->tbrq_head) ? " MULTIPLE" : ""); 18401da177e4SLinus Torvalds tpd = NULL; 18411da177e4SLinus Torvalds list_for_each_entry(__tpd, &he_dev->outstanding_tpds, entry) { 18421da177e4SLinus Torvalds if (TPD_ADDR(__tpd->status) == TBRQ_TPD(he_dev->tbrq_head)) { 18431da177e4SLinus Torvalds tpd = __tpd; 18441da177e4SLinus Torvalds list_del(&__tpd->entry); 18451da177e4SLinus Torvalds break; 18461da177e4SLinus Torvalds } 18471da177e4SLinus Torvalds } 18481da177e4SLinus Torvalds 18491da177e4SLinus Torvalds if (tpd == NULL) { 18501da177e4SLinus Torvalds hprintk("unable to locate tpd for dma buffer %x\n", 18511da177e4SLinus Torvalds TBRQ_TPD(he_dev->tbrq_head)); 18521da177e4SLinus Torvalds goto next_tbrq_entry; 18531da177e4SLinus Torvalds } 18541da177e4SLinus Torvalds 18551da177e4SLinus Torvalds if (TBRQ_EOS(he_dev->tbrq_head)) { 18561da177e4SLinus Torvalds HPRINTK("wake_up(tx_waitq) cid 0x%x\n", 18571da177e4SLinus Torvalds he_mkcid(he_dev, tpd->vcc->vpi, tpd->vcc->vci)); 18581da177e4SLinus Torvalds if (tpd->vcc) 18591da177e4SLinus Torvalds wake_up(&HE_VCC(tpd->vcc)->tx_waitq); 18601da177e4SLinus Torvalds 18611da177e4SLinus Torvalds goto next_tbrq_entry; 18621da177e4SLinus Torvalds } 18631da177e4SLinus Torvalds 18641da177e4SLinus Torvalds for (slot = 0; slot < TPD_MAXIOV; ++slot) { 18651da177e4SLinus Torvalds if (tpd->iovec[slot].addr) 18661da177e4SLinus Torvalds pci_unmap_single(he_dev->pci_dev, 18671da177e4SLinus Torvalds tpd->iovec[slot].addr, 18681da177e4SLinus Torvalds tpd->iovec[slot].len & TPD_LEN_MASK, 18691da177e4SLinus Torvalds PCI_DMA_TODEVICE); 18701da177e4SLinus Torvalds if (tpd->iovec[slot].len & TPD_LST) 18711da177e4SLinus Torvalds break; 18721da177e4SLinus Torvalds 18731da177e4SLinus Torvalds } 18741da177e4SLinus Torvalds 18751da177e4SLinus Torvalds if (tpd->skb) { /* && !TBRQ_MULTIPLE(he_dev->tbrq_head) */ 18761da177e4SLinus Torvalds if (tpd->vcc && tpd->vcc->pop) 18771da177e4SLinus Torvalds tpd->vcc->pop(tpd->vcc, tpd->skb); 18781da177e4SLinus Torvalds else 18791da177e4SLinus Torvalds dev_kfree_skb_any(tpd->skb); 18801da177e4SLinus Torvalds } 18811da177e4SLinus Torvalds 18821da177e4SLinus Torvalds next_tbrq_entry: 18831da177e4SLinus Torvalds if (tpd) 18841da177e4SLinus Torvalds pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); 18851da177e4SLinus Torvalds he_dev->tbrq_head = (struct he_tbrq *) 18861da177e4SLinus Torvalds ((unsigned long) he_dev->tbrq_base | 1887e60c5e14SDavid S. Miller TBRQ_MASK(he_dev->tbrq_head + 1)); 18881da177e4SLinus Torvalds } 18891da177e4SLinus Torvalds 18901da177e4SLinus Torvalds if (updated) { 18911da177e4SLinus Torvalds if (updated > he_dev->tbrq_peak) 18921da177e4SLinus Torvalds he_dev->tbrq_peak = updated; 18931da177e4SLinus Torvalds 18941da177e4SLinus Torvalds he_writel(he_dev, TBRQ_MASK(he_dev->tbrq_head), 18951da177e4SLinus Torvalds G0_TBRQ_H + (group * 16)); 18961da177e4SLinus Torvalds } 18971da177e4SLinus Torvalds } 18981da177e4SLinus Torvalds 18991da177e4SLinus Torvalds static void 19001da177e4SLinus Torvalds he_service_rbpl(struct he_dev *he_dev, int group) 19011da177e4SLinus Torvalds { 1902e623d625Schas williams - CONTRACTOR struct he_rbp *new_tail; 19031da177e4SLinus Torvalds struct he_rbp *rbpl_head; 1904e623d625Schas williams - CONTRACTOR struct he_buff *heb; 1905e623d625Schas williams - CONTRACTOR dma_addr_t mapping; 1906e623d625Schas williams - CONTRACTOR int i; 19071da177e4SLinus Torvalds int moved = 0; 19081da177e4SLinus Torvalds 19091da177e4SLinus Torvalds rbpl_head = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base | 19101da177e4SLinus Torvalds RBPL_MASK(he_readl(he_dev, G0_RBPL_S))); 19111da177e4SLinus Torvalds 19121da177e4SLinus Torvalds for (;;) { 1913e623d625Schas williams - CONTRACTOR new_tail = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base | 19141da177e4SLinus Torvalds RBPL_MASK(he_dev->rbpl_tail+1)); 19151da177e4SLinus Torvalds 19161da177e4SLinus Torvalds /* table 3.42 -- rbpl_tail should never be set to rbpl_head */ 1917e623d625Schas williams - CONTRACTOR if (new_tail == rbpl_head) 19181da177e4SLinus Torvalds break; 19191da177e4SLinus Torvalds 1920e623d625Schas williams - CONTRACTOR i = find_next_zero_bit(he_dev->rbpl_table, RBPL_TABLE_SIZE, he_dev->rbpl_hint); 1921e623d625Schas williams - CONTRACTOR if (i > (RBPL_TABLE_SIZE - 1)) { 1922e623d625Schas williams - CONTRACTOR i = find_first_zero_bit(he_dev->rbpl_table, RBPL_TABLE_SIZE); 1923e623d625Schas williams - CONTRACTOR if (i > (RBPL_TABLE_SIZE - 1)) 1924e623d625Schas williams - CONTRACTOR break; 1925e623d625Schas williams - CONTRACTOR } 1926e623d625Schas williams - CONTRACTOR he_dev->rbpl_hint = i + 1; 1927e623d625Schas williams - CONTRACTOR 1928e623d625Schas williams - CONTRACTOR heb = pci_pool_alloc(he_dev->rbpl_pool, GFP_ATOMIC|GFP_DMA, &mapping); 1929e623d625Schas williams - CONTRACTOR if (!heb) 1930e623d625Schas williams - CONTRACTOR break; 1931e623d625Schas williams - CONTRACTOR heb->mapping = mapping; 1932e623d625Schas williams - CONTRACTOR list_add(&heb->entry, &he_dev->rbpl_outstanding); 1933e623d625Schas williams - CONTRACTOR he_dev->rbpl_virt[i] = heb; 1934e623d625Schas williams - CONTRACTOR set_bit(i, he_dev->rbpl_table); 1935e623d625Schas williams - CONTRACTOR new_tail->idx = i << RBP_IDX_OFFSET; 1936e623d625Schas williams - CONTRACTOR new_tail->phys = mapping + offsetof(struct he_buff, data); 1937e623d625Schas williams - CONTRACTOR 1938e623d625Schas williams - CONTRACTOR he_dev->rbpl_tail = new_tail; 19391da177e4SLinus Torvalds ++moved; 19401da177e4SLinus Torvalds } 19411da177e4SLinus Torvalds 19421da177e4SLinus Torvalds if (moved) 19431da177e4SLinus Torvalds he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), G0_RBPL_T); 19441da177e4SLinus Torvalds } 19451da177e4SLinus Torvalds 19461da177e4SLinus Torvalds static void 19471da177e4SLinus Torvalds he_tasklet(unsigned long data) 19481da177e4SLinus Torvalds { 19491da177e4SLinus Torvalds unsigned long flags; 19501da177e4SLinus Torvalds struct he_dev *he_dev = (struct he_dev *) data; 19511da177e4SLinus Torvalds int group, type; 19521da177e4SLinus Torvalds int updated = 0; 19531da177e4SLinus Torvalds 19541da177e4SLinus Torvalds HPRINTK("tasklet (0x%lx)\n", data); 19551da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 19561da177e4SLinus Torvalds 19571da177e4SLinus Torvalds while (he_dev->irq_head != he_dev->irq_tail) { 19581da177e4SLinus Torvalds ++updated; 19591da177e4SLinus Torvalds 19601da177e4SLinus Torvalds type = ITYPE_TYPE(he_dev->irq_head->isw); 19611da177e4SLinus Torvalds group = ITYPE_GROUP(he_dev->irq_head->isw); 19621da177e4SLinus Torvalds 19631da177e4SLinus Torvalds switch (type) { 19641da177e4SLinus Torvalds case ITYPE_RBRQ_THRESH: 19651da177e4SLinus Torvalds HPRINTK("rbrq%d threshold\n", group); 19661da177e4SLinus Torvalds /* fall through */ 19671da177e4SLinus Torvalds case ITYPE_RBRQ_TIMER: 19681d927870Schas williams - CONTRACTOR if (he_service_rbrq(he_dev, group)) 19691da177e4SLinus Torvalds he_service_rbpl(he_dev, group); 19701da177e4SLinus Torvalds break; 19711da177e4SLinus Torvalds case ITYPE_TBRQ_THRESH: 19721da177e4SLinus Torvalds HPRINTK("tbrq%d threshold\n", group); 19731da177e4SLinus Torvalds /* fall through */ 19741da177e4SLinus Torvalds case ITYPE_TPD_COMPLETE: 19751da177e4SLinus Torvalds he_service_tbrq(he_dev, group); 19761da177e4SLinus Torvalds break; 19771da177e4SLinus Torvalds case ITYPE_RBPL_THRESH: 19781da177e4SLinus Torvalds he_service_rbpl(he_dev, group); 19791da177e4SLinus Torvalds break; 19801da177e4SLinus Torvalds case ITYPE_RBPS_THRESH: 19811d927870Schas williams - CONTRACTOR /* shouldn't happen unless small buffers enabled */ 19821da177e4SLinus Torvalds break; 19831da177e4SLinus Torvalds case ITYPE_PHY: 19841da177e4SLinus Torvalds HPRINTK("phy interrupt\n"); 19851da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 19861da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 19871da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->interrupt) 19881da177e4SLinus Torvalds he_dev->atm_dev->phy->interrupt(he_dev->atm_dev); 19891da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 19901da177e4SLinus Torvalds #endif 19911da177e4SLinus Torvalds break; 19921da177e4SLinus Torvalds case ITYPE_OTHER: 19931da177e4SLinus Torvalds switch (type|group) { 19941da177e4SLinus Torvalds case ITYPE_PARITY: 19951da177e4SLinus Torvalds hprintk("parity error\n"); 19961da177e4SLinus Torvalds break; 19971da177e4SLinus Torvalds case ITYPE_ABORT: 19981da177e4SLinus Torvalds hprintk("abort 0x%x\n", he_readl(he_dev, ABORT_ADDR)); 19991da177e4SLinus Torvalds break; 20001da177e4SLinus Torvalds } 20011da177e4SLinus Torvalds break; 20021da177e4SLinus Torvalds case ITYPE_TYPE(ITYPE_INVALID): 20031da177e4SLinus Torvalds /* see 8.1.1 -- check all queues */ 20041da177e4SLinus Torvalds 20051da177e4SLinus Torvalds HPRINTK("isw not updated 0x%x\n", he_dev->irq_head->isw); 20061da177e4SLinus Torvalds 20071da177e4SLinus Torvalds he_service_rbrq(he_dev, 0); 20081da177e4SLinus Torvalds he_service_rbpl(he_dev, 0); 20091da177e4SLinus Torvalds he_service_tbrq(he_dev, 0); 20101da177e4SLinus Torvalds break; 20111da177e4SLinus Torvalds default: 20121da177e4SLinus Torvalds hprintk("bad isw 0x%x?\n", he_dev->irq_head->isw); 20131da177e4SLinus Torvalds } 20141da177e4SLinus Torvalds 20151da177e4SLinus Torvalds he_dev->irq_head->isw = ITYPE_INVALID; 20161da177e4SLinus Torvalds 20171da177e4SLinus Torvalds he_dev->irq_head = (struct he_irq *) NEXT_ENTRY(he_dev->irq_base, he_dev->irq_head, IRQ_MASK); 20181da177e4SLinus Torvalds } 20191da177e4SLinus Torvalds 20201da177e4SLinus Torvalds if (updated) { 20211da177e4SLinus Torvalds if (updated > he_dev->irq_peak) 20221da177e4SLinus Torvalds he_dev->irq_peak = updated; 20231da177e4SLinus Torvalds 20241da177e4SLinus Torvalds he_writel(he_dev, 20251da177e4SLinus Torvalds IRQ_SIZE(CONFIG_IRQ_SIZE) | 20261da177e4SLinus Torvalds IRQ_THRESH(CONFIG_IRQ_THRESH) | 20271da177e4SLinus Torvalds IRQ_TAIL(he_dev->irq_tail), IRQ0_HEAD); 20281da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata; flush posted writes */ 20291da177e4SLinus Torvalds } 20301da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 20311da177e4SLinus Torvalds } 20321da177e4SLinus Torvalds 20331da177e4SLinus Torvalds static irqreturn_t 20347d12e780SDavid Howells he_irq_handler(int irq, void *dev_id) 20351da177e4SLinus Torvalds { 20361da177e4SLinus Torvalds unsigned long flags; 20371da177e4SLinus Torvalds struct he_dev *he_dev = (struct he_dev * )dev_id; 20381da177e4SLinus Torvalds int handled = 0; 20391da177e4SLinus Torvalds 20401da177e4SLinus Torvalds if (he_dev == NULL) 20411da177e4SLinus Torvalds return IRQ_NONE; 20421da177e4SLinus Torvalds 20431da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 20441da177e4SLinus Torvalds 20451da177e4SLinus Torvalds he_dev->irq_tail = (struct he_irq *) (((unsigned long)he_dev->irq_base) | 20461da177e4SLinus Torvalds (*he_dev->irq_tailoffset << 2)); 20471da177e4SLinus Torvalds 20481da177e4SLinus Torvalds if (he_dev->irq_tail == he_dev->irq_head) { 20491da177e4SLinus Torvalds HPRINTK("tailoffset not updated?\n"); 20501da177e4SLinus Torvalds he_dev->irq_tail = (struct he_irq *) ((unsigned long)he_dev->irq_base | 20511da177e4SLinus Torvalds ((he_readl(he_dev, IRQ0_BASE) & IRQ_MASK) << 2)); 20521da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata */ 20531da177e4SLinus Torvalds } 20541da177e4SLinus Torvalds 20551da177e4SLinus Torvalds #ifdef DEBUG 20561da177e4SLinus Torvalds if (he_dev->irq_head == he_dev->irq_tail /* && !IRQ_PENDING */) 20571da177e4SLinus Torvalds hprintk("spurious (or shared) interrupt?\n"); 20581da177e4SLinus Torvalds #endif 20591da177e4SLinus Torvalds 20601da177e4SLinus Torvalds if (he_dev->irq_head != he_dev->irq_tail) { 20611da177e4SLinus Torvalds handled = 1; 20621da177e4SLinus Torvalds tasklet_schedule(&he_dev->tasklet); 20631da177e4SLinus Torvalds he_writel(he_dev, INT_CLEAR_A, INT_FIFO); /* clear interrupt */ 20641da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* flush posted writes */ 20651da177e4SLinus Torvalds } 20661da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 20671da177e4SLinus Torvalds return IRQ_RETVAL(handled); 20681da177e4SLinus Torvalds 20691da177e4SLinus Torvalds } 20701da177e4SLinus Torvalds 20711da177e4SLinus Torvalds static __inline__ void 20721da177e4SLinus Torvalds __enqueue_tpd(struct he_dev *he_dev, struct he_tpd *tpd, unsigned cid) 20731da177e4SLinus Torvalds { 20741da177e4SLinus Torvalds struct he_tpdrq *new_tail; 20751da177e4SLinus Torvalds 20761da177e4SLinus Torvalds HPRINTK("tpdrq %p cid 0x%x -> tpdrq_tail %p\n", 20771da177e4SLinus Torvalds tpd, cid, he_dev->tpdrq_tail); 20781da177e4SLinus Torvalds 20791da177e4SLinus Torvalds /* new_tail = he_dev->tpdrq_tail; */ 20801da177e4SLinus Torvalds new_tail = (struct he_tpdrq *) ((unsigned long) he_dev->tpdrq_base | 20811da177e4SLinus Torvalds TPDRQ_MASK(he_dev->tpdrq_tail+1)); 20821da177e4SLinus Torvalds 20831da177e4SLinus Torvalds /* 20841da177e4SLinus Torvalds * check to see if we are about to set the tail == head 20851da177e4SLinus Torvalds * if true, update the head pointer from the adapter 20861da177e4SLinus Torvalds * to see if this is really the case (reading the queue 20871da177e4SLinus Torvalds * head for every enqueue would be unnecessarily slow) 20881da177e4SLinus Torvalds */ 20891da177e4SLinus Torvalds 20901da177e4SLinus Torvalds if (new_tail == he_dev->tpdrq_head) { 20911da177e4SLinus Torvalds he_dev->tpdrq_head = (struct he_tpdrq *) 20921da177e4SLinus Torvalds (((unsigned long)he_dev->tpdrq_base) | 20931da177e4SLinus Torvalds TPDRQ_MASK(he_readl(he_dev, TPDRQ_B_H))); 20941da177e4SLinus Torvalds 20951da177e4SLinus Torvalds if (new_tail == he_dev->tpdrq_head) { 2096d730e103SChas Williams int slot; 2097d730e103SChas Williams 20981da177e4SLinus Torvalds hprintk("tpdrq full (cid 0x%x)\n", cid); 20991da177e4SLinus Torvalds /* 21001da177e4SLinus Torvalds * FIXME 21011da177e4SLinus Torvalds * push tpd onto a transmit backlog queue 21021da177e4SLinus Torvalds * after service_tbrq, service the backlog 21031da177e4SLinus Torvalds * for now, we just drop the pdu 21041da177e4SLinus Torvalds */ 2105d730e103SChas Williams for (slot = 0; slot < TPD_MAXIOV; ++slot) { 2106d730e103SChas Williams if (tpd->iovec[slot].addr) 2107d730e103SChas Williams pci_unmap_single(he_dev->pci_dev, 2108d730e103SChas Williams tpd->iovec[slot].addr, 2109d730e103SChas Williams tpd->iovec[slot].len & TPD_LEN_MASK, 2110d730e103SChas Williams PCI_DMA_TODEVICE); 2111d730e103SChas Williams } 21121da177e4SLinus Torvalds if (tpd->skb) { 21131da177e4SLinus Torvalds if (tpd->vcc->pop) 21141da177e4SLinus Torvalds tpd->vcc->pop(tpd->vcc, tpd->skb); 21151da177e4SLinus Torvalds else 21161da177e4SLinus Torvalds dev_kfree_skb_any(tpd->skb); 21171da177e4SLinus Torvalds atomic_inc(&tpd->vcc->stats->tx_err); 21181da177e4SLinus Torvalds } 21191da177e4SLinus Torvalds pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); 21201da177e4SLinus Torvalds return; 21211da177e4SLinus Torvalds } 21221da177e4SLinus Torvalds } 21231da177e4SLinus Torvalds 21241da177e4SLinus Torvalds /* 2.1.5 transmit packet descriptor ready queue */ 21251da177e4SLinus Torvalds list_add_tail(&tpd->entry, &he_dev->outstanding_tpds); 21261da177e4SLinus Torvalds he_dev->tpdrq_tail->tpd = TPD_ADDR(tpd->status); 21271da177e4SLinus Torvalds he_dev->tpdrq_tail->cid = cid; 21281da177e4SLinus Torvalds wmb(); 21291da177e4SLinus Torvalds 21301da177e4SLinus Torvalds he_dev->tpdrq_tail = new_tail; 21311da177e4SLinus Torvalds 21321da177e4SLinus Torvalds he_writel(he_dev, TPDRQ_MASK(he_dev->tpdrq_tail), TPDRQ_T); 21331da177e4SLinus Torvalds (void) he_readl(he_dev, TPDRQ_T); /* flush posted writes */ 21341da177e4SLinus Torvalds } 21351da177e4SLinus Torvalds 21361da177e4SLinus Torvalds static int 21371da177e4SLinus Torvalds he_open(struct atm_vcc *vcc) 21381da177e4SLinus Torvalds { 21391da177e4SLinus Torvalds unsigned long flags; 21401da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 21411da177e4SLinus Torvalds struct he_vcc *he_vcc; 21421da177e4SLinus Torvalds int err = 0; 21431da177e4SLinus Torvalds unsigned cid, rsr0, rsr1, rsr4, tsr0, tsr0_aal, tsr4, period, reg, clock; 21441da177e4SLinus Torvalds short vpi = vcc->vpi; 21451da177e4SLinus Torvalds int vci = vcc->vci; 21461da177e4SLinus Torvalds 21471da177e4SLinus Torvalds if (vci == ATM_VCI_UNSPEC || vpi == ATM_VPI_UNSPEC) 21481da177e4SLinus Torvalds return 0; 21491da177e4SLinus Torvalds 21501da177e4SLinus Torvalds HPRINTK("open vcc %p %d.%d\n", vcc, vpi, vci); 21511da177e4SLinus Torvalds 21521da177e4SLinus Torvalds set_bit(ATM_VF_ADDR, &vcc->flags); 21531da177e4SLinus Torvalds 21541da177e4SLinus Torvalds cid = he_mkcid(he_dev, vpi, vci); 21551da177e4SLinus Torvalds 21565cbded58SRobert P. J. Day he_vcc = kmalloc(sizeof(struct he_vcc), GFP_ATOMIC); 21571da177e4SLinus Torvalds if (he_vcc == NULL) { 21581da177e4SLinus Torvalds hprintk("unable to allocate he_vcc during open\n"); 21591da177e4SLinus Torvalds return -ENOMEM; 21601da177e4SLinus Torvalds } 21611da177e4SLinus Torvalds 2162e623d625Schas williams - CONTRACTOR INIT_LIST_HEAD(&he_vcc->buffers); 21631da177e4SLinus Torvalds he_vcc->pdu_len = 0; 21641da177e4SLinus Torvalds he_vcc->rc_index = -1; 21651da177e4SLinus Torvalds 21661da177e4SLinus Torvalds init_waitqueue_head(&he_vcc->rx_waitq); 21671da177e4SLinus Torvalds init_waitqueue_head(&he_vcc->tx_waitq); 21681da177e4SLinus Torvalds 21691da177e4SLinus Torvalds vcc->dev_data = he_vcc; 21701da177e4SLinus Torvalds 21711da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE) { 21721da177e4SLinus Torvalds int pcr_goal; 21731da177e4SLinus Torvalds 21741da177e4SLinus Torvalds pcr_goal = atm_pcr_goal(&vcc->qos.txtp); 21751da177e4SLinus Torvalds if (pcr_goal == 0) 21761da177e4SLinus Torvalds pcr_goal = he_dev->atm_dev->link_rate; 21771da177e4SLinus Torvalds if (pcr_goal < 0) /* means round down, technically */ 21781da177e4SLinus Torvalds pcr_goal = -pcr_goal; 21791da177e4SLinus Torvalds 21801da177e4SLinus Torvalds HPRINTK("open tx cid 0x%x pcr_goal %d\n", cid, pcr_goal); 21811da177e4SLinus Torvalds 21821da177e4SLinus Torvalds switch (vcc->qos.aal) { 21831da177e4SLinus Torvalds case ATM_AAL5: 21841da177e4SLinus Torvalds tsr0_aal = TSR0_AAL5; 21851da177e4SLinus Torvalds tsr4 = TSR4_AAL5; 21861da177e4SLinus Torvalds break; 21871da177e4SLinus Torvalds case ATM_AAL0: 21881da177e4SLinus Torvalds tsr0_aal = TSR0_AAL0_SDU; 21891da177e4SLinus Torvalds tsr4 = TSR4_AAL0_SDU; 21901da177e4SLinus Torvalds break; 21911da177e4SLinus Torvalds default: 21921da177e4SLinus Torvalds err = -EINVAL; 21931da177e4SLinus Torvalds goto open_failed; 21941da177e4SLinus Torvalds } 21951da177e4SLinus Torvalds 21961da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 21971da177e4SLinus Torvalds tsr0 = he_readl_tsr0(he_dev, cid); 21981da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 21991da177e4SLinus Torvalds 22001da177e4SLinus Torvalds if (TSR0_CONN_STATE(tsr0) != 0) { 22011da177e4SLinus Torvalds hprintk("cid 0x%x not idle (tsr0 = 0x%x)\n", cid, tsr0); 22021da177e4SLinus Torvalds err = -EBUSY; 22031da177e4SLinus Torvalds goto open_failed; 22041da177e4SLinus Torvalds } 22051da177e4SLinus Torvalds 22061da177e4SLinus Torvalds switch (vcc->qos.txtp.traffic_class) { 22071da177e4SLinus Torvalds case ATM_UBR: 22081da177e4SLinus Torvalds /* 2.3.3.1 open connection ubr */ 22091da177e4SLinus Torvalds 22101da177e4SLinus Torvalds tsr0 = TSR0_UBR | TSR0_GROUP(0) | tsr0_aal | 22111da177e4SLinus Torvalds TSR0_USE_WMIN | TSR0_UPDATE_GER; 22121da177e4SLinus Torvalds break; 22131da177e4SLinus Torvalds 22141da177e4SLinus Torvalds case ATM_CBR: 22151da177e4SLinus Torvalds /* 2.3.3.2 open connection cbr */ 22161da177e4SLinus Torvalds 22171da177e4SLinus Torvalds /* 8.2.3 cbr scheduler wrap problem -- limit to 90% total link rate */ 22181da177e4SLinus Torvalds if ((he_dev->total_bw + pcr_goal) 22191da177e4SLinus Torvalds > (he_dev->atm_dev->link_rate * 9 / 10)) 22201da177e4SLinus Torvalds { 22211da177e4SLinus Torvalds err = -EBUSY; 22221da177e4SLinus Torvalds goto open_failed; 22231da177e4SLinus Torvalds } 22241da177e4SLinus Torvalds 22251da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); /* also protects he_dev->cs_stper[] */ 22261da177e4SLinus Torvalds 22271da177e4SLinus Torvalds /* find an unused cs_stper register */ 22281da177e4SLinus Torvalds for (reg = 0; reg < HE_NUM_CS_STPER; ++reg) 22291da177e4SLinus Torvalds if (he_dev->cs_stper[reg].inuse == 0 || 22301da177e4SLinus Torvalds he_dev->cs_stper[reg].pcr == pcr_goal) 22311da177e4SLinus Torvalds break; 22321da177e4SLinus Torvalds 22331da177e4SLinus Torvalds if (reg == HE_NUM_CS_STPER) { 22341da177e4SLinus Torvalds err = -EBUSY; 22351da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22361da177e4SLinus Torvalds goto open_failed; 22371da177e4SLinus Torvalds } 22381da177e4SLinus Torvalds 22391da177e4SLinus Torvalds he_dev->total_bw += pcr_goal; 22401da177e4SLinus Torvalds 22411da177e4SLinus Torvalds he_vcc->rc_index = reg; 22421da177e4SLinus Torvalds ++he_dev->cs_stper[reg].inuse; 22431da177e4SLinus Torvalds he_dev->cs_stper[reg].pcr = pcr_goal; 22441da177e4SLinus Torvalds 22451da177e4SLinus Torvalds clock = he_is622(he_dev) ? 66667000 : 50000000; 22461da177e4SLinus Torvalds period = clock / pcr_goal; 22471da177e4SLinus Torvalds 22481da177e4SLinus Torvalds HPRINTK("rc_index = %d period = %d\n", 22491da177e4SLinus Torvalds reg, period); 22501da177e4SLinus Torvalds 22511da177e4SLinus Torvalds he_writel_mbox(he_dev, rate_to_atmf(period/2), 22521da177e4SLinus Torvalds CS_STPER0 + reg); 22531da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22541da177e4SLinus Torvalds 22551da177e4SLinus Torvalds tsr0 = TSR0_CBR | TSR0_GROUP(0) | tsr0_aal | 22561da177e4SLinus Torvalds TSR0_RC_INDEX(reg); 22571da177e4SLinus Torvalds 22581da177e4SLinus Torvalds break; 22591da177e4SLinus Torvalds default: 22601da177e4SLinus Torvalds err = -EINVAL; 22611da177e4SLinus Torvalds goto open_failed; 22621da177e4SLinus Torvalds } 22631da177e4SLinus Torvalds 22641da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 22651da177e4SLinus Torvalds 22661da177e4SLinus Torvalds he_writel_tsr0(he_dev, tsr0, cid); 22671da177e4SLinus Torvalds he_writel_tsr4(he_dev, tsr4 | 1, cid); 22681da177e4SLinus Torvalds he_writel_tsr1(he_dev, TSR1_MCR(rate_to_atmf(0)) | 22691da177e4SLinus Torvalds TSR1_PCR(rate_to_atmf(pcr_goal)), cid); 22701da177e4SLinus Torvalds he_writel_tsr2(he_dev, TSR2_ACR(rate_to_atmf(pcr_goal)), cid); 22711da177e4SLinus Torvalds he_writel_tsr9(he_dev, TSR9_OPEN_CONN, cid); 22721da177e4SLinus Torvalds 22731da177e4SLinus Torvalds he_writel_tsr3(he_dev, 0x0, cid); 22741da177e4SLinus Torvalds he_writel_tsr5(he_dev, 0x0, cid); 22751da177e4SLinus Torvalds he_writel_tsr6(he_dev, 0x0, cid); 22761da177e4SLinus Torvalds he_writel_tsr7(he_dev, 0x0, cid); 22771da177e4SLinus Torvalds he_writel_tsr8(he_dev, 0x0, cid); 22781da177e4SLinus Torvalds he_writel_tsr10(he_dev, 0x0, cid); 22791da177e4SLinus Torvalds he_writel_tsr11(he_dev, 0x0, cid); 22801da177e4SLinus Torvalds he_writel_tsr12(he_dev, 0x0, cid); 22811da177e4SLinus Torvalds he_writel_tsr13(he_dev, 0x0, cid); 22821da177e4SLinus Torvalds he_writel_tsr14(he_dev, 0x0, cid); 22831da177e4SLinus Torvalds (void) he_readl_tsr0(he_dev, cid); /* flush posted writes */ 22841da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22851da177e4SLinus Torvalds } 22861da177e4SLinus Torvalds 22871da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 22881da177e4SLinus Torvalds unsigned aal; 22891da177e4SLinus Torvalds 22901da177e4SLinus Torvalds HPRINTK("open rx cid 0x%x (rx_waitq %p)\n", cid, 22911da177e4SLinus Torvalds &HE_VCC(vcc)->rx_waitq); 22921da177e4SLinus Torvalds 22931da177e4SLinus Torvalds switch (vcc->qos.aal) { 22941da177e4SLinus Torvalds case ATM_AAL5: 22951da177e4SLinus Torvalds aal = RSR0_AAL5; 22961da177e4SLinus Torvalds break; 22971da177e4SLinus Torvalds case ATM_AAL0: 22981da177e4SLinus Torvalds aal = RSR0_RAWCELL; 22991da177e4SLinus Torvalds break; 23001da177e4SLinus Torvalds default: 23011da177e4SLinus Torvalds err = -EINVAL; 23021da177e4SLinus Torvalds goto open_failed; 23031da177e4SLinus Torvalds } 23041da177e4SLinus Torvalds 23051da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 23061da177e4SLinus Torvalds 23071da177e4SLinus Torvalds rsr0 = he_readl_rsr0(he_dev, cid); 23081da177e4SLinus Torvalds if (rsr0 & RSR0_OPEN_CONN) { 23091da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23101da177e4SLinus Torvalds 23111da177e4SLinus Torvalds hprintk("cid 0x%x not idle (rsr0 = 0x%x)\n", cid, rsr0); 23121da177e4SLinus Torvalds err = -EBUSY; 23131da177e4SLinus Torvalds goto open_failed; 23141da177e4SLinus Torvalds } 23151da177e4SLinus Torvalds 23161d927870Schas williams - CONTRACTOR rsr1 = RSR1_GROUP(0) | RSR1_RBPL_ONLY; 23171d927870Schas williams - CONTRACTOR rsr4 = RSR4_GROUP(0) | RSR4_RBPL_ONLY; 23181da177e4SLinus Torvalds rsr0 = vcc->qos.rxtp.traffic_class == ATM_UBR ? 23191da177e4SLinus Torvalds (RSR0_EPD_ENABLE|RSR0_PPD_ENABLE) : 0; 23201da177e4SLinus Torvalds 23211da177e4SLinus Torvalds #ifdef USE_CHECKSUM_HW 23221da177e4SLinus Torvalds if (vpi == 0 && vci >= ATM_NOT_RSV_VCI) 23231da177e4SLinus Torvalds rsr0 |= RSR0_TCP_CKSUM; 23241da177e4SLinus Torvalds #endif 23251da177e4SLinus Torvalds 23261da177e4SLinus Torvalds he_writel_rsr4(he_dev, rsr4, cid); 23271da177e4SLinus Torvalds he_writel_rsr1(he_dev, rsr1, cid); 23281da177e4SLinus Torvalds /* 5.1.11 last parameter initialized should be 23291da177e4SLinus Torvalds the open/closed indication in rsr0 */ 23301da177e4SLinus Torvalds he_writel_rsr0(he_dev, 23311da177e4SLinus Torvalds rsr0 | RSR0_START_PDU | RSR0_OPEN_CONN | aal, cid); 23321da177e4SLinus Torvalds (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */ 23331da177e4SLinus Torvalds 23341da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23351da177e4SLinus Torvalds } 23361da177e4SLinus Torvalds 23371da177e4SLinus Torvalds open_failed: 23381da177e4SLinus Torvalds 23391da177e4SLinus Torvalds if (err) { 23401da177e4SLinus Torvalds kfree(he_vcc); 23411da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 23421da177e4SLinus Torvalds } 23431da177e4SLinus Torvalds else 23441da177e4SLinus Torvalds set_bit(ATM_VF_READY, &vcc->flags); 23451da177e4SLinus Torvalds 23461da177e4SLinus Torvalds return err; 23471da177e4SLinus Torvalds } 23481da177e4SLinus Torvalds 23491da177e4SLinus Torvalds static void 23501da177e4SLinus Torvalds he_close(struct atm_vcc *vcc) 23511da177e4SLinus Torvalds { 23521da177e4SLinus Torvalds unsigned long flags; 23531da177e4SLinus Torvalds DECLARE_WAITQUEUE(wait, current); 23541da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 23551da177e4SLinus Torvalds struct he_tpd *tpd; 23561da177e4SLinus Torvalds unsigned cid; 23571da177e4SLinus Torvalds struct he_vcc *he_vcc = HE_VCC(vcc); 23581da177e4SLinus Torvalds #define MAX_RETRY 30 23591da177e4SLinus Torvalds int retry = 0, sleep = 1, tx_inuse; 23601da177e4SLinus Torvalds 23611da177e4SLinus Torvalds HPRINTK("close vcc %p %d.%d\n", vcc, vcc->vpi, vcc->vci); 23621da177e4SLinus Torvalds 23631da177e4SLinus Torvalds clear_bit(ATM_VF_READY, &vcc->flags); 23641da177e4SLinus Torvalds cid = he_mkcid(he_dev, vcc->vpi, vcc->vci); 23651da177e4SLinus Torvalds 23661da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 23671da177e4SLinus Torvalds int timeout; 23681da177e4SLinus Torvalds 23691da177e4SLinus Torvalds HPRINTK("close rx cid 0x%x\n", cid); 23701da177e4SLinus Torvalds 23711da177e4SLinus Torvalds /* 2.7.2.2 close receive operation */ 23721da177e4SLinus Torvalds 23731da177e4SLinus Torvalds /* wait for previous close (if any) to finish */ 23741da177e4SLinus Torvalds 23751da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 23761da177e4SLinus Torvalds while (he_readl(he_dev, RCC_STAT) & RCC_BUSY) { 23771da177e4SLinus Torvalds HPRINTK("close cid 0x%x RCC_BUSY\n", cid); 23781da177e4SLinus Torvalds udelay(250); 23791da177e4SLinus Torvalds } 23801da177e4SLinus Torvalds 23811da177e4SLinus Torvalds set_current_state(TASK_UNINTERRUPTIBLE); 23821da177e4SLinus Torvalds add_wait_queue(&he_vcc->rx_waitq, &wait); 23831da177e4SLinus Torvalds 23841da177e4SLinus Torvalds he_writel_rsr0(he_dev, RSR0_CLOSE_CONN, cid); 23851da177e4SLinus Torvalds (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */ 23861da177e4SLinus Torvalds he_writel_mbox(he_dev, cid, RXCON_CLOSE); 23871da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23881da177e4SLinus Torvalds 23891da177e4SLinus Torvalds timeout = schedule_timeout(30*HZ); 23901da177e4SLinus Torvalds 23911da177e4SLinus Torvalds remove_wait_queue(&he_vcc->rx_waitq, &wait); 23921da177e4SLinus Torvalds set_current_state(TASK_RUNNING); 23931da177e4SLinus Torvalds 23941da177e4SLinus Torvalds if (timeout == 0) 23951da177e4SLinus Torvalds hprintk("close rx timeout cid 0x%x\n", cid); 23961da177e4SLinus Torvalds 23971da177e4SLinus Torvalds HPRINTK("close rx cid 0x%x complete\n", cid); 23981da177e4SLinus Torvalds 23991da177e4SLinus Torvalds } 24001da177e4SLinus Torvalds 24011da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE) { 24021da177e4SLinus Torvalds volatile unsigned tsr4, tsr0; 24031da177e4SLinus Torvalds int timeout; 24041da177e4SLinus Torvalds 24051da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x\n", cid); 24061da177e4SLinus Torvalds 24071da177e4SLinus Torvalds /* 2.1.2 24081da177e4SLinus Torvalds * 24091da177e4SLinus Torvalds * ... the host must first stop queueing packets to the TPDRQ 24101da177e4SLinus Torvalds * on the connection to be closed, then wait for all outstanding 24111da177e4SLinus Torvalds * packets to be transmitted and their buffers returned to the 24121da177e4SLinus Torvalds * TBRQ. When the last packet on the connection arrives in the 24131da177e4SLinus Torvalds * TBRQ, the host issues the close command to the adapter. 24141da177e4SLinus Torvalds */ 24151da177e4SLinus Torvalds 2416504bb3b5Schas williams - CONTRACTOR while (((tx_inuse = atomic_read(&sk_atm(vcc)->sk_wmem_alloc)) > 1) && 24171da177e4SLinus Torvalds (retry < MAX_RETRY)) { 24181da177e4SLinus Torvalds msleep(sleep); 24191da177e4SLinus Torvalds if (sleep < 250) 24201da177e4SLinus Torvalds sleep = sleep * 2; 24211da177e4SLinus Torvalds 24221da177e4SLinus Torvalds ++retry; 24231da177e4SLinus Torvalds } 24241da177e4SLinus Torvalds 2425504bb3b5Schas williams - CONTRACTOR if (tx_inuse > 1) 24261da177e4SLinus Torvalds hprintk("close tx cid 0x%x tx_inuse = %d\n", cid, tx_inuse); 24271da177e4SLinus Torvalds 24281da177e4SLinus Torvalds /* 2.3.1.1 generic close operations with flush */ 24291da177e4SLinus Torvalds 24301da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 24311da177e4SLinus Torvalds he_writel_tsr4_upper(he_dev, TSR4_FLUSH_CONN, cid); 24321da177e4SLinus Torvalds /* also clears TSR4_SESSION_ENDED */ 24331da177e4SLinus Torvalds 24341da177e4SLinus Torvalds switch (vcc->qos.txtp.traffic_class) { 24351da177e4SLinus Torvalds case ATM_UBR: 24361da177e4SLinus Torvalds he_writel_tsr1(he_dev, 24371da177e4SLinus Torvalds TSR1_MCR(rate_to_atmf(200000)) 24381da177e4SLinus Torvalds | TSR1_PCR(0), cid); 24391da177e4SLinus Torvalds break; 24401da177e4SLinus Torvalds case ATM_CBR: 24411da177e4SLinus Torvalds he_writel_tsr14_upper(he_dev, TSR14_DELETE, cid); 24421da177e4SLinus Torvalds break; 24431da177e4SLinus Torvalds } 24441da177e4SLinus Torvalds (void) he_readl_tsr4(he_dev, cid); /* flush posted writes */ 24451da177e4SLinus Torvalds 24461da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 24471da177e4SLinus Torvalds if (tpd == NULL) { 24481da177e4SLinus Torvalds hprintk("close tx he_alloc_tpd failed cid 0x%x\n", cid); 24491da177e4SLinus Torvalds goto close_tx_incomplete; 24501da177e4SLinus Torvalds } 24511da177e4SLinus Torvalds tpd->status |= TPD_EOS | TPD_INT; 24521da177e4SLinus Torvalds tpd->skb = NULL; 24531da177e4SLinus Torvalds tpd->vcc = vcc; 24541da177e4SLinus Torvalds wmb(); 24551da177e4SLinus Torvalds 24561da177e4SLinus Torvalds set_current_state(TASK_UNINTERRUPTIBLE); 24571da177e4SLinus Torvalds add_wait_queue(&he_vcc->tx_waitq, &wait); 24581da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 24591da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 24601da177e4SLinus Torvalds 24611da177e4SLinus Torvalds timeout = schedule_timeout(30*HZ); 24621da177e4SLinus Torvalds 24631da177e4SLinus Torvalds remove_wait_queue(&he_vcc->tx_waitq, &wait); 24641da177e4SLinus Torvalds set_current_state(TASK_RUNNING); 24651da177e4SLinus Torvalds 24661da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 24671da177e4SLinus Torvalds 24681da177e4SLinus Torvalds if (timeout == 0) { 24691da177e4SLinus Torvalds hprintk("close tx timeout cid 0x%x\n", cid); 24701da177e4SLinus Torvalds goto close_tx_incomplete; 24711da177e4SLinus Torvalds } 24721da177e4SLinus Torvalds 24731da177e4SLinus Torvalds while (!((tsr4 = he_readl_tsr4(he_dev, cid)) & TSR4_SESSION_ENDED)) { 24741da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x !TSR4_SESSION_ENDED (tsr4 = 0x%x)\n", cid, tsr4); 24751da177e4SLinus Torvalds udelay(250); 24761da177e4SLinus Torvalds } 24771da177e4SLinus Torvalds 24781da177e4SLinus Torvalds while (TSR0_CONN_STATE(tsr0 = he_readl_tsr0(he_dev, cid)) != 0) { 24791da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x TSR0_CONN_STATE != 0 (tsr0 = 0x%x)\n", cid, tsr0); 24801da177e4SLinus Torvalds udelay(250); 24811da177e4SLinus Torvalds } 24821da177e4SLinus Torvalds 24831da177e4SLinus Torvalds close_tx_incomplete: 24841da177e4SLinus Torvalds 24851da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class == ATM_CBR) { 24861da177e4SLinus Torvalds int reg = he_vcc->rc_index; 24871da177e4SLinus Torvalds 24881da177e4SLinus Torvalds HPRINTK("cs_stper reg = %d\n", reg); 24891da177e4SLinus Torvalds 24901da177e4SLinus Torvalds if (he_dev->cs_stper[reg].inuse == 0) 24911da177e4SLinus Torvalds hprintk("cs_stper[%d].inuse = 0!\n", reg); 24921da177e4SLinus Torvalds else 24931da177e4SLinus Torvalds --he_dev->cs_stper[reg].inuse; 24941da177e4SLinus Torvalds 24951da177e4SLinus Torvalds he_dev->total_bw -= he_dev->cs_stper[reg].pcr; 24961da177e4SLinus Torvalds } 24971da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 24981da177e4SLinus Torvalds 24991da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x complete\n", cid); 25001da177e4SLinus Torvalds } 25011da177e4SLinus Torvalds 25021da177e4SLinus Torvalds kfree(he_vcc); 25031da177e4SLinus Torvalds 25041da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 25051da177e4SLinus Torvalds } 25061da177e4SLinus Torvalds 25071da177e4SLinus Torvalds static int 25081da177e4SLinus Torvalds he_send(struct atm_vcc *vcc, struct sk_buff *skb) 25091da177e4SLinus Torvalds { 25101da177e4SLinus Torvalds unsigned long flags; 25111da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 25121da177e4SLinus Torvalds unsigned cid = he_mkcid(he_dev, vcc->vpi, vcc->vci); 25131da177e4SLinus Torvalds struct he_tpd *tpd; 25141da177e4SLinus Torvalds #ifdef USE_SCATTERGATHER 25151da177e4SLinus Torvalds int i, slot = 0; 25161da177e4SLinus Torvalds #endif 25171da177e4SLinus Torvalds 25181da177e4SLinus Torvalds #define HE_TPD_BUFSIZE 0xffff 25191da177e4SLinus Torvalds 25201da177e4SLinus Torvalds HPRINTK("send %d.%d\n", vcc->vpi, vcc->vci); 25211da177e4SLinus Torvalds 25221da177e4SLinus Torvalds if ((skb->len > HE_TPD_BUFSIZE) || 25231da177e4SLinus Torvalds ((vcc->qos.aal == ATM_AAL0) && (skb->len != ATM_AAL0_SDU))) { 25241da177e4SLinus Torvalds hprintk("buffer too large (or small) -- %d bytes\n", skb->len ); 25251da177e4SLinus Torvalds if (vcc->pop) 25261da177e4SLinus Torvalds vcc->pop(vcc, skb); 25271da177e4SLinus Torvalds else 25281da177e4SLinus Torvalds dev_kfree_skb_any(skb); 25291da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 25301da177e4SLinus Torvalds return -EINVAL; 25311da177e4SLinus Torvalds } 25321da177e4SLinus Torvalds 25331da177e4SLinus Torvalds #ifndef USE_SCATTERGATHER 25341da177e4SLinus Torvalds if (skb_shinfo(skb)->nr_frags) { 25351da177e4SLinus Torvalds hprintk("no scatter/gather support\n"); 25361da177e4SLinus Torvalds if (vcc->pop) 25371da177e4SLinus Torvalds vcc->pop(vcc, skb); 25381da177e4SLinus Torvalds else 25391da177e4SLinus Torvalds dev_kfree_skb_any(skb); 25401da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 25411da177e4SLinus Torvalds return -EINVAL; 25421da177e4SLinus Torvalds } 25431da177e4SLinus Torvalds #endif 25441da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 25451da177e4SLinus Torvalds 25461da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 25471da177e4SLinus Torvalds if (tpd == NULL) { 25481da177e4SLinus Torvalds if (vcc->pop) 25491da177e4SLinus Torvalds vcc->pop(vcc, skb); 25501da177e4SLinus Torvalds else 25511da177e4SLinus Torvalds dev_kfree_skb_any(skb); 25521da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 25531da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 25541da177e4SLinus Torvalds return -ENOMEM; 25551da177e4SLinus Torvalds } 25561da177e4SLinus Torvalds 25571da177e4SLinus Torvalds if (vcc->qos.aal == ATM_AAL5) 25581da177e4SLinus Torvalds tpd->status |= TPD_CELLTYPE(TPD_USERCELL); 25591da177e4SLinus Torvalds else { 25601da177e4SLinus Torvalds char *pti_clp = (void *) (skb->data + 3); 25611da177e4SLinus Torvalds int clp, pti; 25621da177e4SLinus Torvalds 25631da177e4SLinus Torvalds pti = (*pti_clp & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT; 25641da177e4SLinus Torvalds clp = (*pti_clp & ATM_HDR_CLP); 25651da177e4SLinus Torvalds tpd->status |= TPD_CELLTYPE(pti); 25661da177e4SLinus Torvalds if (clp) 25671da177e4SLinus Torvalds tpd->status |= TPD_CLP; 25681da177e4SLinus Torvalds 25691da177e4SLinus Torvalds skb_pull(skb, ATM_AAL0_SDU - ATM_CELL_PAYLOAD); 25701da177e4SLinus Torvalds } 25711da177e4SLinus Torvalds 25721da177e4SLinus Torvalds #ifdef USE_SCATTERGATHER 25731da177e4SLinus Torvalds tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev, skb->data, 2574e743d313SEric Dumazet skb_headlen(skb), PCI_DMA_TODEVICE); 2575e743d313SEric Dumazet tpd->iovec[slot].len = skb_headlen(skb); 25761da177e4SLinus Torvalds ++slot; 25771da177e4SLinus Torvalds 25781da177e4SLinus Torvalds for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 25791da177e4SLinus Torvalds skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; 25801da177e4SLinus Torvalds 25811da177e4SLinus Torvalds if (slot == TPD_MAXIOV) { /* queue tpd; start new tpd */ 25821da177e4SLinus Torvalds tpd->vcc = vcc; 25831da177e4SLinus Torvalds tpd->skb = NULL; /* not the last fragment 25841da177e4SLinus Torvalds so dont ->push() yet */ 25851da177e4SLinus Torvalds wmb(); 25861da177e4SLinus Torvalds 25871da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 25881da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 25891da177e4SLinus Torvalds if (tpd == NULL) { 25901da177e4SLinus Torvalds if (vcc->pop) 25911da177e4SLinus Torvalds vcc->pop(vcc, skb); 25921da177e4SLinus Torvalds else 25931da177e4SLinus Torvalds dev_kfree_skb_any(skb); 25941da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 25951da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 25961da177e4SLinus Torvalds return -ENOMEM; 25971da177e4SLinus Torvalds } 25981da177e4SLinus Torvalds tpd->status |= TPD_USERCELL; 25991da177e4SLinus Torvalds slot = 0; 26001da177e4SLinus Torvalds } 26011da177e4SLinus Torvalds 26021da177e4SLinus Torvalds tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev, 26031da177e4SLinus Torvalds (void *) page_address(frag->page) + frag->page_offset, 26041da177e4SLinus Torvalds frag->size, PCI_DMA_TODEVICE); 26051da177e4SLinus Torvalds tpd->iovec[slot].len = frag->size; 26061da177e4SLinus Torvalds ++slot; 26071da177e4SLinus Torvalds 26081da177e4SLinus Torvalds } 26091da177e4SLinus Torvalds 26101da177e4SLinus Torvalds tpd->iovec[slot - 1].len |= TPD_LST; 26111da177e4SLinus Torvalds #else 26121da177e4SLinus Torvalds tpd->address0 = pci_map_single(he_dev->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE); 26131da177e4SLinus Torvalds tpd->length0 = skb->len | TPD_LST; 26141da177e4SLinus Torvalds #endif 26151da177e4SLinus Torvalds tpd->status |= TPD_INT; 26161da177e4SLinus Torvalds 26171da177e4SLinus Torvalds tpd->vcc = vcc; 26181da177e4SLinus Torvalds tpd->skb = skb; 26191da177e4SLinus Torvalds wmb(); 26201da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 26211da177e4SLinus Torvalds 26221da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 26231da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 26241da177e4SLinus Torvalds 26251da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx); 26261da177e4SLinus Torvalds 26271da177e4SLinus Torvalds return 0; 26281da177e4SLinus Torvalds } 26291da177e4SLinus Torvalds 26301da177e4SLinus Torvalds static int 26311da177e4SLinus Torvalds he_ioctl(struct atm_dev *atm_dev, unsigned int cmd, void __user *arg) 26321da177e4SLinus Torvalds { 26331da177e4SLinus Torvalds unsigned long flags; 26341da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 26351da177e4SLinus Torvalds struct he_ioctl_reg reg; 26361da177e4SLinus Torvalds int err = 0; 26371da177e4SLinus Torvalds 26381da177e4SLinus Torvalds switch (cmd) { 26391da177e4SLinus Torvalds case HE_GET_REG: 26401da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 26411da177e4SLinus Torvalds return -EPERM; 26421da177e4SLinus Torvalds 26431da177e4SLinus Torvalds if (copy_from_user(®, arg, 26441da177e4SLinus Torvalds sizeof(struct he_ioctl_reg))) 26451da177e4SLinus Torvalds return -EFAULT; 26461da177e4SLinus Torvalds 26471da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 26481da177e4SLinus Torvalds switch (reg.type) { 26491da177e4SLinus Torvalds case HE_REGTYPE_PCI: 2650e0c5567dSroel kluin if (reg.addr >= HE_REGMAP_SIZE) { 265128e84ab3SRobert T. Johnson err = -EINVAL; 265228e84ab3SRobert T. Johnson break; 265328e84ab3SRobert T. Johnson } 265428e84ab3SRobert T. Johnson 26551da177e4SLinus Torvalds reg.val = he_readl(he_dev, reg.addr); 26561da177e4SLinus Torvalds break; 26571da177e4SLinus Torvalds case HE_REGTYPE_RCM: 26581da177e4SLinus Torvalds reg.val = 26591da177e4SLinus Torvalds he_readl_rcm(he_dev, reg.addr); 26601da177e4SLinus Torvalds break; 26611da177e4SLinus Torvalds case HE_REGTYPE_TCM: 26621da177e4SLinus Torvalds reg.val = 26631da177e4SLinus Torvalds he_readl_tcm(he_dev, reg.addr); 26641da177e4SLinus Torvalds break; 26651da177e4SLinus Torvalds case HE_REGTYPE_MBOX: 26661da177e4SLinus Torvalds reg.val = 26671da177e4SLinus Torvalds he_readl_mbox(he_dev, reg.addr); 26681da177e4SLinus Torvalds break; 26691da177e4SLinus Torvalds default: 26701da177e4SLinus Torvalds err = -EINVAL; 26711da177e4SLinus Torvalds break; 26721da177e4SLinus Torvalds } 26731da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 26741da177e4SLinus Torvalds if (err == 0) 26751da177e4SLinus Torvalds if (copy_to_user(arg, ®, 26761da177e4SLinus Torvalds sizeof(struct he_ioctl_reg))) 26771da177e4SLinus Torvalds return -EFAULT; 26781da177e4SLinus Torvalds break; 26791da177e4SLinus Torvalds default: 26801da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 26811da177e4SLinus Torvalds if (atm_dev->phy && atm_dev->phy->ioctl) 26821da177e4SLinus Torvalds err = atm_dev->phy->ioctl(atm_dev, cmd, arg); 26831da177e4SLinus Torvalds #else /* CONFIG_ATM_HE_USE_SUNI */ 26841da177e4SLinus Torvalds err = -EINVAL; 26851da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 26861da177e4SLinus Torvalds break; 26871da177e4SLinus Torvalds } 26881da177e4SLinus Torvalds 26891da177e4SLinus Torvalds return err; 26901da177e4SLinus Torvalds } 26911da177e4SLinus Torvalds 26921da177e4SLinus Torvalds static void 26931da177e4SLinus Torvalds he_phy_put(struct atm_dev *atm_dev, unsigned char val, unsigned long addr) 26941da177e4SLinus Torvalds { 26951da177e4SLinus Torvalds unsigned long flags; 26961da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 26971da177e4SLinus Torvalds 26981da177e4SLinus Torvalds HPRINTK("phy_put(val 0x%x, addr 0x%lx)\n", val, addr); 26991da177e4SLinus Torvalds 27001da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 27011da177e4SLinus Torvalds he_writel(he_dev, val, FRAMER + (addr*4)); 27021da177e4SLinus Torvalds (void) he_readl(he_dev, FRAMER + (addr*4)); /* flush posted writes */ 27031da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27041da177e4SLinus Torvalds } 27051da177e4SLinus Torvalds 27061da177e4SLinus Torvalds 27071da177e4SLinus Torvalds static unsigned char 27081da177e4SLinus Torvalds he_phy_get(struct atm_dev *atm_dev, unsigned long addr) 27091da177e4SLinus Torvalds { 27101da177e4SLinus Torvalds unsigned long flags; 27111da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 27121da177e4SLinus Torvalds unsigned reg; 27131da177e4SLinus Torvalds 27141da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 27151da177e4SLinus Torvalds reg = he_readl(he_dev, FRAMER + (addr*4)); 27161da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27171da177e4SLinus Torvalds 27181da177e4SLinus Torvalds HPRINTK("phy_get(addr 0x%lx) =0x%x\n", addr, reg); 27191da177e4SLinus Torvalds return reg; 27201da177e4SLinus Torvalds } 27211da177e4SLinus Torvalds 27221da177e4SLinus Torvalds static int 27231da177e4SLinus Torvalds he_proc_read(struct atm_dev *dev, loff_t *pos, char *page) 27241da177e4SLinus Torvalds { 27251da177e4SLinus Torvalds unsigned long flags; 27261da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(dev); 27271da177e4SLinus Torvalds int left, i; 27281da177e4SLinus Torvalds #ifdef notdef 27291da177e4SLinus Torvalds struct he_rbrq *rbrq_tail; 27301da177e4SLinus Torvalds struct he_tpdrq *tpdrq_head; 27311da177e4SLinus Torvalds int rbpl_head, rbpl_tail; 27321da177e4SLinus Torvalds #endif 27331da177e4SLinus Torvalds static long mcc = 0, oec = 0, dcc = 0, cec = 0; 27341da177e4SLinus Torvalds 27351da177e4SLinus Torvalds 27361da177e4SLinus Torvalds left = *pos; 27371da177e4SLinus Torvalds if (!left--) 2738900092a4SAdrian Bunk return sprintf(page, "ATM he driver\n"); 27391da177e4SLinus Torvalds 27401da177e4SLinus Torvalds if (!left--) 27411da177e4SLinus Torvalds return sprintf(page, "%s%s\n\n", 27421da177e4SLinus Torvalds he_dev->prod_id, he_dev->media & 0x40 ? "SM" : "MM"); 27431da177e4SLinus Torvalds 27441da177e4SLinus Torvalds if (!left--) 27451da177e4SLinus Torvalds return sprintf(page, "Mismatched Cells VPI/VCI Not Open Dropped Cells RCM Dropped Cells\n"); 27461da177e4SLinus Torvalds 27471da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 27481da177e4SLinus Torvalds mcc += he_readl(he_dev, MCC); 27491da177e4SLinus Torvalds oec += he_readl(he_dev, OEC); 27501da177e4SLinus Torvalds dcc += he_readl(he_dev, DCC); 27511da177e4SLinus Torvalds cec += he_readl(he_dev, CEC); 27521da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27531da177e4SLinus Torvalds 27541da177e4SLinus Torvalds if (!left--) 27551da177e4SLinus Torvalds return sprintf(page, "%16ld %16ld %13ld %17ld\n\n", 27561da177e4SLinus Torvalds mcc, oec, dcc, cec); 27571da177e4SLinus Torvalds 27581da177e4SLinus Torvalds if (!left--) 27591da177e4SLinus Torvalds return sprintf(page, "irq_size = %d inuse = ? peak = %d\n", 27601da177e4SLinus Torvalds CONFIG_IRQ_SIZE, he_dev->irq_peak); 27611da177e4SLinus Torvalds 27621da177e4SLinus Torvalds if (!left--) 27631da177e4SLinus Torvalds return sprintf(page, "tpdrq_size = %d inuse = ?\n", 27641da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE); 27651da177e4SLinus Torvalds 27661da177e4SLinus Torvalds if (!left--) 27671da177e4SLinus Torvalds return sprintf(page, "rbrq_size = %d inuse = ? peak = %d\n", 27681da177e4SLinus Torvalds CONFIG_RBRQ_SIZE, he_dev->rbrq_peak); 27691da177e4SLinus Torvalds 27701da177e4SLinus Torvalds if (!left--) 27711da177e4SLinus Torvalds return sprintf(page, "tbrq_size = %d peak = %d\n", 27721da177e4SLinus Torvalds CONFIG_TBRQ_SIZE, he_dev->tbrq_peak); 27731da177e4SLinus Torvalds 27741da177e4SLinus Torvalds 27751da177e4SLinus Torvalds #ifdef notdef 27761da177e4SLinus Torvalds rbpl_head = RBPL_MASK(he_readl(he_dev, G0_RBPL_S)); 27771da177e4SLinus Torvalds rbpl_tail = RBPL_MASK(he_readl(he_dev, G0_RBPL_T)); 27781da177e4SLinus Torvalds 27791da177e4SLinus Torvalds inuse = rbpl_head - rbpl_tail; 27801da177e4SLinus Torvalds if (inuse < 0) 27811da177e4SLinus Torvalds inuse += CONFIG_RBPL_SIZE * sizeof(struct he_rbp); 27821da177e4SLinus Torvalds inuse /= sizeof(struct he_rbp); 27831da177e4SLinus Torvalds 27841da177e4SLinus Torvalds if (!left--) 27851da177e4SLinus Torvalds return sprintf(page, "rbpl_size = %d inuse = %d\n\n", 27861da177e4SLinus Torvalds CONFIG_RBPL_SIZE, inuse); 27871da177e4SLinus Torvalds #endif 27881da177e4SLinus Torvalds 27891da177e4SLinus Torvalds if (!left--) 27901da177e4SLinus Torvalds return sprintf(page, "rate controller periods (cbr)\n pcr #vc\n"); 27911da177e4SLinus Torvalds 27921da177e4SLinus Torvalds for (i = 0; i < HE_NUM_CS_STPER; ++i) 27931da177e4SLinus Torvalds if (!left--) 27941da177e4SLinus Torvalds return sprintf(page, "cs_stper%-2d %8ld %3d\n", i, 27951da177e4SLinus Torvalds he_dev->cs_stper[i].pcr, 27961da177e4SLinus Torvalds he_dev->cs_stper[i].inuse); 27971da177e4SLinus Torvalds 27981da177e4SLinus Torvalds if (!left--) 27991da177e4SLinus Torvalds return sprintf(page, "total bw (cbr): %d (limit %d)\n", 28001da177e4SLinus Torvalds he_dev->total_bw, he_dev->atm_dev->link_rate * 10 / 9); 28011da177e4SLinus Torvalds 28021da177e4SLinus Torvalds return 0; 28031da177e4SLinus Torvalds } 28041da177e4SLinus Torvalds 28051da177e4SLinus Torvalds /* eeprom routines -- see 4.7 */ 28061da177e4SLinus Torvalds 28070ee897d4SAdrian Bunk static u8 read_prom_byte(struct he_dev *he_dev, int addr) 28081da177e4SLinus Torvalds { 28091da177e4SLinus Torvalds u32 val = 0, tmp_read = 0; 28101da177e4SLinus Torvalds int i, j = 0; 28111da177e4SLinus Torvalds u8 byte_read = 0; 28121da177e4SLinus Torvalds 28131da177e4SLinus Torvalds val = readl(he_dev->membase + HOST_CNTL); 28141da177e4SLinus Torvalds val &= 0xFFFFE0FF; 28151da177e4SLinus Torvalds 28161da177e4SLinus Torvalds /* Turn on write enable */ 28171da177e4SLinus Torvalds val |= 0x800; 28181da177e4SLinus Torvalds he_writel(he_dev, val, HOST_CNTL); 28191da177e4SLinus Torvalds 28201da177e4SLinus Torvalds /* Send READ instruction */ 282136fe55d6SAhmed S. Darwish for (i = 0; i < ARRAY_SIZE(readtab); i++) { 28221da177e4SLinus Torvalds he_writel(he_dev, val | readtab[i], HOST_CNTL); 28231da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28241da177e4SLinus Torvalds } 28251da177e4SLinus Torvalds 28261da177e4SLinus Torvalds /* Next, we need to send the byte address to read from */ 28271da177e4SLinus Torvalds for (i = 7; i >= 0; i--) { 28281da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL); 28291da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28301da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL); 28311da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28321da177e4SLinus Torvalds } 28331da177e4SLinus Torvalds 28341da177e4SLinus Torvalds j = 0; 28351da177e4SLinus Torvalds 28361da177e4SLinus Torvalds val &= 0xFFFFF7FF; /* Turn off write enable */ 28371da177e4SLinus Torvalds he_writel(he_dev, val, HOST_CNTL); 28381da177e4SLinus Torvalds 28391da177e4SLinus Torvalds /* Now, we can read data from the EEPROM by clocking it in */ 28401da177e4SLinus Torvalds for (i = 7; i >= 0; i--) { 28411da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++], HOST_CNTL); 28421da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28431da177e4SLinus Torvalds tmp_read = he_readl(he_dev, HOST_CNTL); 28441da177e4SLinus Torvalds byte_read |= (unsigned char) 28451da177e4SLinus Torvalds ((tmp_read & ID_DOUT) >> ID_DOFFSET << i); 28461da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++], HOST_CNTL); 28471da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28481da177e4SLinus Torvalds } 28491da177e4SLinus Torvalds 28501da177e4SLinus Torvalds he_writel(he_dev, val | ID_CS, HOST_CNTL); 28511da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28521da177e4SLinus Torvalds 28531da177e4SLinus Torvalds return byte_read; 28541da177e4SLinus Torvalds } 28551da177e4SLinus Torvalds 28561da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 28571da177e4SLinus Torvalds MODULE_AUTHOR("chas williams <chas@cmf.nrl.navy.mil>"); 28581da177e4SLinus Torvalds MODULE_DESCRIPTION("ForeRunnerHE ATM Adapter driver"); 28591da177e4SLinus Torvalds module_param(disable64, bool, 0); 28601da177e4SLinus Torvalds MODULE_PARM_DESC(disable64, "disable 64-bit pci bus transfers"); 28611da177e4SLinus Torvalds module_param(nvpibits, short, 0); 28621da177e4SLinus Torvalds MODULE_PARM_DESC(nvpibits, "numbers of bits for vpi (default 0)"); 28631da177e4SLinus Torvalds module_param(nvcibits, short, 0); 28641da177e4SLinus Torvalds MODULE_PARM_DESC(nvcibits, "numbers of bits for vci (default 12)"); 28651da177e4SLinus Torvalds module_param(rx_skb_reserve, short, 0); 28661da177e4SLinus Torvalds MODULE_PARM_DESC(rx_skb_reserve, "padding for receive skb (default 16)"); 28671da177e4SLinus Torvalds module_param(irq_coalesce, bool, 0); 28681da177e4SLinus Torvalds MODULE_PARM_DESC(irq_coalesce, "use interrupt coalescing (default 1)"); 28691da177e4SLinus Torvalds module_param(sdh, bool, 0); 28701da177e4SLinus Torvalds MODULE_PARM_DESC(sdh, "use SDH framing (default 0)"); 28711da177e4SLinus Torvalds 28721da177e4SLinus Torvalds static struct pci_device_id he_pci_tbl[] = { 2873fbaab958SPeter Huewe { PCI_VDEVICE(FORE, PCI_DEVICE_ID_FORE_HE), 0 }, 28741da177e4SLinus Torvalds { 0, } 28751da177e4SLinus Torvalds }; 28761da177e4SLinus Torvalds 28771da177e4SLinus Torvalds MODULE_DEVICE_TABLE(pci, he_pci_tbl); 28781da177e4SLinus Torvalds 28791da177e4SLinus Torvalds static struct pci_driver he_driver = { 28801da177e4SLinus Torvalds .name = "he", 28811da177e4SLinus Torvalds .probe = he_init_one, 28821da177e4SLinus Torvalds .remove = __devexit_p(he_remove_one), 28831da177e4SLinus Torvalds .id_table = he_pci_tbl, 28841da177e4SLinus Torvalds }; 28851da177e4SLinus Torvalds 28861da177e4SLinus Torvalds static int __init he_init(void) 28871da177e4SLinus Torvalds { 28881da177e4SLinus Torvalds return pci_register_driver(&he_driver); 28891da177e4SLinus Torvalds } 28901da177e4SLinus Torvalds 28911da177e4SLinus Torvalds static void __exit he_cleanup(void) 28921da177e4SLinus Torvalds { 28931da177e4SLinus Torvalds pci_unregister_driver(&he_driver); 28941da177e4SLinus Torvalds } 28951da177e4SLinus Torvalds 28961da177e4SLinus Torvalds module_init(he_init); 28971da177e4SLinus Torvalds module_exit(he_cleanup); 2898