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> 705a0e3ad6STejun Heo #include <linux/slab.h> 711da177e4SLinus Torvalds #include <asm/io.h> 721da177e4SLinus Torvalds #include <asm/byteorder.h> 731da177e4SLinus Torvalds #include <asm/uaccess.h> 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds #include <linux/atmdev.h> 761da177e4SLinus Torvalds #include <linux/atm.h> 771da177e4SLinus Torvalds #include <linux/sonet.h> 781da177e4SLinus Torvalds 791da177e4SLinus Torvalds #undef USE_SCATTERGATHER 801da177e4SLinus Torvalds #undef USE_CHECKSUM_HW /* still confused about this */ 811da177e4SLinus Torvalds /* #undef HE_DEBUG */ 821da177e4SLinus Torvalds 831da177e4SLinus Torvalds #include "he.h" 841da177e4SLinus Torvalds #include "suni.h" 851da177e4SLinus Torvalds #include <linux/atm_he.h> 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds #define hprintk(fmt,args...) printk(KERN_ERR DEV_LABEL "%d: " fmt, he_dev->number , ##args) 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds #ifdef HE_DEBUG 901da177e4SLinus Torvalds #define HPRINTK(fmt,args...) printk(KERN_DEBUG DEV_LABEL "%d: " fmt, he_dev->number , ##args) 911da177e4SLinus Torvalds #else /* !HE_DEBUG */ 921da177e4SLinus Torvalds #define HPRINTK(fmt,args...) do { } while (0) 931da177e4SLinus Torvalds #endif /* HE_DEBUG */ 941da177e4SLinus Torvalds 951da177e4SLinus Torvalds /* declarations */ 961da177e4SLinus Torvalds 971da177e4SLinus Torvalds static int he_open(struct atm_vcc *vcc); 981da177e4SLinus Torvalds static void he_close(struct atm_vcc *vcc); 991da177e4SLinus Torvalds static int he_send(struct atm_vcc *vcc, struct sk_buff *skb); 1001da177e4SLinus Torvalds static int he_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg); 1017d12e780SDavid Howells static irqreturn_t he_irq_handler(int irq, void *dev_id); 1021da177e4SLinus Torvalds static void he_tasklet(unsigned long data); 1031da177e4SLinus Torvalds static int he_proc_read(struct atm_dev *dev,loff_t *pos,char *page); 1041da177e4SLinus Torvalds static int he_start(struct atm_dev *dev); 1051da177e4SLinus Torvalds static void he_stop(struct he_dev *dev); 1061da177e4SLinus Torvalds static void he_phy_put(struct atm_dev *, unsigned char, unsigned long); 1071da177e4SLinus Torvalds static unsigned char he_phy_get(struct atm_dev *, unsigned long); 1081da177e4SLinus Torvalds 1091da177e4SLinus Torvalds static u8 read_prom_byte(struct he_dev *he_dev, int addr); 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds /* globals */ 1121da177e4SLinus Torvalds 1131da177e4SLinus Torvalds static struct he_dev *he_devs; 1141da177e4SLinus Torvalds static int disable64; 1151da177e4SLinus Torvalds static short nvpibits = -1; 1161da177e4SLinus Torvalds static short nvcibits = -1; 1171da177e4SLinus Torvalds static short rx_skb_reserve = 16; 1181da177e4SLinus Torvalds static int irq_coalesce = 1; 1191da177e4SLinus Torvalds static int sdh = 0; 1201da177e4SLinus Torvalds 1211da177e4SLinus Torvalds /* Read from EEPROM = 0000 0011b */ 1221da177e4SLinus Torvalds static unsigned int readtab[] = { 1231da177e4SLinus Torvalds CS_HIGH | CLK_HIGH, 1241da177e4SLinus Torvalds CS_LOW | CLK_LOW, 1251da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1261da177e4SLinus Torvalds CLK_LOW, 1271da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1281da177e4SLinus Torvalds CLK_LOW, 1291da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1301da177e4SLinus Torvalds CLK_LOW, 1311da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1321da177e4SLinus Torvalds CLK_LOW, 1331da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1341da177e4SLinus Torvalds CLK_LOW, 1351da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1361da177e4SLinus Torvalds CLK_LOW | SI_HIGH, 1371da177e4SLinus Torvalds CLK_HIGH | SI_HIGH, /* 1 */ 1381da177e4SLinus Torvalds CLK_LOW | SI_HIGH, 1391da177e4SLinus Torvalds CLK_HIGH | SI_HIGH /* 1 */ 1401da177e4SLinus Torvalds }; 1411da177e4SLinus Torvalds 1421da177e4SLinus Torvalds /* Clock to read from/write to the EEPROM */ 1431da177e4SLinus Torvalds static unsigned int clocktab[] = { 1441da177e4SLinus Torvalds CLK_LOW, 1451da177e4SLinus Torvalds CLK_HIGH, 1461da177e4SLinus Torvalds CLK_LOW, 1471da177e4SLinus Torvalds CLK_HIGH, 1481da177e4SLinus Torvalds CLK_LOW, 1491da177e4SLinus Torvalds CLK_HIGH, 1501da177e4SLinus Torvalds CLK_LOW, 1511da177e4SLinus Torvalds CLK_HIGH, 1521da177e4SLinus Torvalds CLK_LOW, 1531da177e4SLinus Torvalds CLK_HIGH, 1541da177e4SLinus Torvalds CLK_LOW, 1551da177e4SLinus Torvalds CLK_HIGH, 1561da177e4SLinus Torvalds CLK_LOW, 1571da177e4SLinus Torvalds CLK_HIGH, 1581da177e4SLinus Torvalds CLK_LOW, 1591da177e4SLinus Torvalds CLK_HIGH, 1601da177e4SLinus Torvalds CLK_LOW 1611da177e4SLinus Torvalds }; 1621da177e4SLinus Torvalds 1631da177e4SLinus Torvalds static struct atmdev_ops he_ops = 1641da177e4SLinus Torvalds { 1651da177e4SLinus Torvalds .open = he_open, 1661da177e4SLinus Torvalds .close = he_close, 1671da177e4SLinus Torvalds .ioctl = he_ioctl, 1681da177e4SLinus Torvalds .send = he_send, 1691da177e4SLinus Torvalds .phy_put = he_phy_put, 1701da177e4SLinus Torvalds .phy_get = he_phy_get, 1711da177e4SLinus Torvalds .proc_read = he_proc_read, 1721da177e4SLinus Torvalds .owner = THIS_MODULE 1731da177e4SLinus Torvalds }; 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds #define he_writel(dev, val, reg) do { writel(val, (dev)->membase + (reg)); wmb(); } while (0) 1761da177e4SLinus Torvalds #define he_readl(dev, reg) readl((dev)->membase + (reg)) 1771da177e4SLinus Torvalds 1781da177e4SLinus Torvalds /* section 2.12 connection memory access */ 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds static __inline__ void 1811da177e4SLinus Torvalds he_writel_internal(struct he_dev *he_dev, unsigned val, unsigned addr, 1821da177e4SLinus Torvalds unsigned flags) 1831da177e4SLinus Torvalds { 1841da177e4SLinus Torvalds he_writel(he_dev, val, CON_DAT); 1851da177e4SLinus Torvalds (void) he_readl(he_dev, CON_DAT); /* flush posted writes */ 1861da177e4SLinus Torvalds he_writel(he_dev, flags | CON_CTL_WRITE | CON_CTL_ADDR(addr), CON_CTL); 1871da177e4SLinus Torvalds while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY); 1881da177e4SLinus Torvalds } 1891da177e4SLinus Torvalds 1901da177e4SLinus Torvalds #define he_writel_rcm(dev, val, reg) \ 1911da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_RCM) 1921da177e4SLinus Torvalds 1931da177e4SLinus Torvalds #define he_writel_tcm(dev, val, reg) \ 1941da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_TCM) 1951da177e4SLinus Torvalds 1961da177e4SLinus Torvalds #define he_writel_mbox(dev, val, reg) \ 1971da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_MBOX) 1981da177e4SLinus Torvalds 1991da177e4SLinus Torvalds static unsigned 2001da177e4SLinus Torvalds he_readl_internal(struct he_dev *he_dev, unsigned addr, unsigned flags) 2011da177e4SLinus Torvalds { 2021da177e4SLinus Torvalds he_writel(he_dev, flags | CON_CTL_READ | CON_CTL_ADDR(addr), CON_CTL); 2031da177e4SLinus Torvalds while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY); 2041da177e4SLinus Torvalds return he_readl(he_dev, CON_DAT); 2051da177e4SLinus Torvalds } 2061da177e4SLinus Torvalds 2071da177e4SLinus Torvalds #define he_readl_rcm(dev, reg) \ 2081da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_RCM) 2091da177e4SLinus Torvalds 2101da177e4SLinus Torvalds #define he_readl_tcm(dev, reg) \ 2111da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_TCM) 2121da177e4SLinus Torvalds 2131da177e4SLinus Torvalds #define he_readl_mbox(dev, reg) \ 2141da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_MBOX) 2151da177e4SLinus Torvalds 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds /* figure 2.2 connection id */ 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds #define he_mkcid(dev, vpi, vci) (((vpi << (dev)->vcibits) | vci) & 0x1fff) 2201da177e4SLinus Torvalds 2211da177e4SLinus Torvalds /* 2.5.1 per connection transmit state registers */ 2221da177e4SLinus Torvalds 2231da177e4SLinus Torvalds #define he_writel_tsr0(dev, val, cid) \ 2241da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 0) 2251da177e4SLinus Torvalds #define he_readl_tsr0(dev, cid) \ 2261da177e4SLinus Torvalds he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 0) 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds #define he_writel_tsr1(dev, val, cid) \ 2291da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 1) 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds #define he_writel_tsr2(dev, val, cid) \ 2321da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 2) 2331da177e4SLinus Torvalds 2341da177e4SLinus Torvalds #define he_writel_tsr3(dev, val, cid) \ 2351da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 3) 2361da177e4SLinus Torvalds 2371da177e4SLinus Torvalds #define he_writel_tsr4(dev, val, cid) \ 2381da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 4) 2391da177e4SLinus Torvalds 2401da177e4SLinus Torvalds /* from page 2-20 2411da177e4SLinus Torvalds * 2421da177e4SLinus Torvalds * NOTE While the transmit connection is active, bits 23 through 0 2431da177e4SLinus Torvalds * of this register must not be written by the host. Byte 2441da177e4SLinus Torvalds * enables should be used during normal operation when writing 2451da177e4SLinus Torvalds * the most significant byte. 2461da177e4SLinus Torvalds */ 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds #define he_writel_tsr4_upper(dev, val, cid) \ 2491da177e4SLinus Torvalds he_writel_internal(dev, val, CONFIG_TSRA | (cid << 3) | 4, \ 2501da177e4SLinus Torvalds CON_CTL_TCM \ 2511da177e4SLinus Torvalds | CON_BYTE_DISABLE_2 \ 2521da177e4SLinus Torvalds | CON_BYTE_DISABLE_1 \ 2531da177e4SLinus Torvalds | CON_BYTE_DISABLE_0) 2541da177e4SLinus Torvalds 2551da177e4SLinus Torvalds #define he_readl_tsr4(dev, cid) \ 2561da177e4SLinus Torvalds he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 4) 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds #define he_writel_tsr5(dev, val, cid) \ 2591da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 5) 2601da177e4SLinus Torvalds 2611da177e4SLinus Torvalds #define he_writel_tsr6(dev, val, cid) \ 2621da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 6) 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvalds #define he_writel_tsr7(dev, val, cid) \ 2651da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 7) 2661da177e4SLinus Torvalds 2671da177e4SLinus Torvalds 2681da177e4SLinus Torvalds #define he_writel_tsr8(dev, val, cid) \ 2691da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 0) 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds #define he_writel_tsr9(dev, val, cid) \ 2721da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 1) 2731da177e4SLinus Torvalds 2741da177e4SLinus Torvalds #define he_writel_tsr10(dev, val, cid) \ 2751da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 2) 2761da177e4SLinus Torvalds 2771da177e4SLinus Torvalds #define he_writel_tsr11(dev, val, cid) \ 2781da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 3) 2791da177e4SLinus Torvalds 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds #define he_writel_tsr12(dev, val, cid) \ 2821da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 0) 2831da177e4SLinus Torvalds 2841da177e4SLinus Torvalds #define he_writel_tsr13(dev, val, cid) \ 2851da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 1) 2861da177e4SLinus Torvalds 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvalds #define he_writel_tsr14(dev, val, cid) \ 2891da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRD | cid) 2901da177e4SLinus Torvalds 2911da177e4SLinus Torvalds #define he_writel_tsr14_upper(dev, val, cid) \ 2921da177e4SLinus Torvalds he_writel_internal(dev, val, CONFIG_TSRD | cid, \ 2931da177e4SLinus Torvalds CON_CTL_TCM \ 2941da177e4SLinus Torvalds | CON_BYTE_DISABLE_2 \ 2951da177e4SLinus Torvalds | CON_BYTE_DISABLE_1 \ 2961da177e4SLinus Torvalds | CON_BYTE_DISABLE_0) 2971da177e4SLinus Torvalds 2981da177e4SLinus Torvalds /* 2.7.1 per connection receive state registers */ 2991da177e4SLinus Torvalds 3001da177e4SLinus Torvalds #define he_writel_rsr0(dev, val, cid) \ 3011da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 0) 3021da177e4SLinus Torvalds #define he_readl_rsr0(dev, cid) \ 3031da177e4SLinus Torvalds he_readl_rcm(dev, 0x00000 | (cid << 3) | 0) 3041da177e4SLinus Torvalds 3051da177e4SLinus Torvalds #define he_writel_rsr1(dev, val, cid) \ 3061da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 1) 3071da177e4SLinus Torvalds 3081da177e4SLinus Torvalds #define he_writel_rsr2(dev, val, cid) \ 3091da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 2) 3101da177e4SLinus Torvalds 3111da177e4SLinus Torvalds #define he_writel_rsr3(dev, val, cid) \ 3121da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 3) 3131da177e4SLinus Torvalds 3141da177e4SLinus Torvalds #define he_writel_rsr4(dev, val, cid) \ 3151da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 4) 3161da177e4SLinus Torvalds 3171da177e4SLinus Torvalds #define he_writel_rsr5(dev, val, cid) \ 3181da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 5) 3191da177e4SLinus Torvalds 3201da177e4SLinus Torvalds #define he_writel_rsr6(dev, val, cid) \ 3211da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 6) 3221da177e4SLinus Torvalds 3231da177e4SLinus Torvalds #define he_writel_rsr7(dev, val, cid) \ 3241da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 7) 3251da177e4SLinus Torvalds 3261da177e4SLinus Torvalds static __inline__ struct atm_vcc* 3271da177e4SLinus Torvalds __find_vcc(struct he_dev *he_dev, unsigned cid) 3281da177e4SLinus Torvalds { 3291da177e4SLinus Torvalds struct hlist_head *head; 3301da177e4SLinus Torvalds struct atm_vcc *vcc; 3311da177e4SLinus Torvalds struct hlist_node *node; 3321da177e4SLinus Torvalds struct sock *s; 3331da177e4SLinus Torvalds short vpi; 3341da177e4SLinus Torvalds int vci; 3351da177e4SLinus Torvalds 3361da177e4SLinus Torvalds vpi = cid >> he_dev->vcibits; 3371da177e4SLinus Torvalds vci = cid & ((1 << he_dev->vcibits) - 1); 3381da177e4SLinus Torvalds head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds sk_for_each(s, node, head) { 3411da177e4SLinus Torvalds vcc = atm_sk(s); 3421da177e4SLinus Torvalds if (vcc->dev == he_dev->atm_dev && 3431da177e4SLinus Torvalds vcc->vci == vci && vcc->vpi == vpi && 3441da177e4SLinus Torvalds vcc->qos.rxtp.traffic_class != ATM_NONE) { 3451da177e4SLinus Torvalds return vcc; 3461da177e4SLinus Torvalds } 3471da177e4SLinus Torvalds } 3481da177e4SLinus Torvalds return NULL; 3491da177e4SLinus Torvalds } 3501da177e4SLinus Torvalds 3511da177e4SLinus Torvalds static int __devinit 3521da177e4SLinus Torvalds he_init_one(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent) 3531da177e4SLinus Torvalds { 3541da177e4SLinus Torvalds struct atm_dev *atm_dev = NULL; 3551da177e4SLinus Torvalds struct he_dev *he_dev = NULL; 3561da177e4SLinus Torvalds int err = 0; 3571da177e4SLinus Torvalds 358900092a4SAdrian Bunk printk(KERN_INFO "ATM he driver\n"); 3591da177e4SLinus Torvalds 3601da177e4SLinus Torvalds if (pci_enable_device(pci_dev)) 3611da177e4SLinus Torvalds return -EIO; 362284901a9SYang Hongyang if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)) != 0) { 3631da177e4SLinus Torvalds printk(KERN_WARNING "he: no suitable dma available\n"); 3641da177e4SLinus Torvalds err = -EIO; 3651da177e4SLinus Torvalds goto init_one_failure; 3661da177e4SLinus Torvalds } 3671da177e4SLinus Torvalds 3681da177e4SLinus Torvalds atm_dev = atm_dev_register(DEV_LABEL, &he_ops, -1, NULL); 3691da177e4SLinus Torvalds if (!atm_dev) { 3701da177e4SLinus Torvalds err = -ENODEV; 3711da177e4SLinus Torvalds goto init_one_failure; 3721da177e4SLinus Torvalds } 3731da177e4SLinus Torvalds pci_set_drvdata(pci_dev, atm_dev); 3741da177e4SLinus Torvalds 3750c1cca1dSOm Narasimhan he_dev = kzalloc(sizeof(struct he_dev), 3761da177e4SLinus Torvalds GFP_KERNEL); 3771da177e4SLinus Torvalds if (!he_dev) { 3781da177e4SLinus Torvalds err = -ENOMEM; 3791da177e4SLinus Torvalds goto init_one_failure; 3801da177e4SLinus Torvalds } 3811da177e4SLinus Torvalds he_dev->pci_dev = pci_dev; 3821da177e4SLinus Torvalds he_dev->atm_dev = atm_dev; 3831da177e4SLinus Torvalds he_dev->atm_dev->dev_data = he_dev; 3841da177e4SLinus Torvalds atm_dev->dev_data = he_dev; 3851da177e4SLinus Torvalds he_dev->number = atm_dev->number; 3868a8037acSchas williams tasklet_init(&he_dev->tasklet, he_tasklet, (unsigned long) he_dev); 3878a8037acSchas williams spin_lock_init(&he_dev->global_lock); 3888a8037acSchas williams 3891da177e4SLinus Torvalds if (he_start(atm_dev)) { 3901da177e4SLinus Torvalds he_stop(he_dev); 3911da177e4SLinus Torvalds err = -ENODEV; 3921da177e4SLinus Torvalds goto init_one_failure; 3931da177e4SLinus Torvalds } 3941da177e4SLinus Torvalds he_dev->next = NULL; 3951da177e4SLinus Torvalds if (he_devs) 3961da177e4SLinus Torvalds he_dev->next = he_devs; 3971da177e4SLinus Torvalds he_devs = he_dev; 3981da177e4SLinus Torvalds return 0; 3991da177e4SLinus Torvalds 4001da177e4SLinus Torvalds init_one_failure: 4011da177e4SLinus Torvalds if (atm_dev) 4021da177e4SLinus Torvalds atm_dev_deregister(atm_dev); 4031da177e4SLinus Torvalds kfree(he_dev); 4041da177e4SLinus Torvalds pci_disable_device(pci_dev); 4051da177e4SLinus Torvalds return err; 4061da177e4SLinus Torvalds } 4071da177e4SLinus Torvalds 4081da177e4SLinus Torvalds static void __devexit 4091da177e4SLinus Torvalds he_remove_one (struct pci_dev *pci_dev) 4101da177e4SLinus Torvalds { 4111da177e4SLinus Torvalds struct atm_dev *atm_dev; 4121da177e4SLinus Torvalds struct he_dev *he_dev; 4131da177e4SLinus Torvalds 4141da177e4SLinus Torvalds atm_dev = pci_get_drvdata(pci_dev); 4151da177e4SLinus Torvalds he_dev = HE_DEV(atm_dev); 4161da177e4SLinus Torvalds 4171da177e4SLinus Torvalds /* need to remove from he_devs */ 4181da177e4SLinus Torvalds 4191da177e4SLinus Torvalds he_stop(he_dev); 4201da177e4SLinus Torvalds atm_dev_deregister(atm_dev); 4211da177e4SLinus Torvalds kfree(he_dev); 4221da177e4SLinus Torvalds 4231da177e4SLinus Torvalds pci_set_drvdata(pci_dev, NULL); 4241da177e4SLinus Torvalds pci_disable_device(pci_dev); 4251da177e4SLinus Torvalds } 4261da177e4SLinus Torvalds 4271da177e4SLinus Torvalds 4281da177e4SLinus Torvalds static unsigned 4291da177e4SLinus Torvalds rate_to_atmf(unsigned rate) /* cps to atm forum format */ 4301da177e4SLinus Torvalds { 4311da177e4SLinus Torvalds #define NONZERO (1 << 14) 4321da177e4SLinus Torvalds 4331da177e4SLinus Torvalds unsigned exp = 0; 4341da177e4SLinus Torvalds 4351da177e4SLinus Torvalds if (rate == 0) 4361da177e4SLinus Torvalds return 0; 4371da177e4SLinus Torvalds 4381da177e4SLinus Torvalds rate <<= 9; 4391da177e4SLinus Torvalds while (rate > 0x3ff) { 4401da177e4SLinus Torvalds ++exp; 4411da177e4SLinus Torvalds rate >>= 1; 4421da177e4SLinus Torvalds } 4431da177e4SLinus Torvalds 4441da177e4SLinus Torvalds return (NONZERO | (exp << 9) | (rate & 0x1ff)); 4451da177e4SLinus Torvalds } 4461da177e4SLinus Torvalds 4475b7c714eSRoland Dreier static void __devinit 4481da177e4SLinus Torvalds he_init_rx_lbfp0(struct he_dev *he_dev) 4491da177e4SLinus Torvalds { 4501da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 4511da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 4521da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 4531da177e4SLinus Torvalds unsigned row_offset = he_dev->r0_startrow * he_dev->bytes_per_row; 4541da177e4SLinus Torvalds 4551da177e4SLinus Torvalds lbufd_index = 0; 4561da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA); 4571da177e4SLinus Torvalds 4581da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, RLBF0_H); 4591da177e4SLinus Torvalds 4601da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->r0_numbuffs; ++i) { 4611da177e4SLinus Torvalds lbufd_index += 2; 4621da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 4631da177e4SLinus Torvalds 4641da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 4651da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 4661da177e4SLinus Torvalds 4671da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 4681da177e4SLinus Torvalds lbuf_count = 0; 4691da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 4701da177e4SLinus Torvalds } 4711da177e4SLinus Torvalds lbm_offset += 4; 4721da177e4SLinus Torvalds } 4731da177e4SLinus Torvalds 4741da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 2, RLBF0_T); 4751da177e4SLinus Torvalds he_writel(he_dev, he_dev->r0_numbuffs, RLBF0_C); 4761da177e4SLinus Torvalds } 4771da177e4SLinus Torvalds 4785b7c714eSRoland Dreier static void __devinit 4791da177e4SLinus Torvalds he_init_rx_lbfp1(struct he_dev *he_dev) 4801da177e4SLinus Torvalds { 4811da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 4821da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 4831da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 4841da177e4SLinus Torvalds unsigned row_offset = he_dev->r1_startrow * he_dev->bytes_per_row; 4851da177e4SLinus Torvalds 4861da177e4SLinus Torvalds lbufd_index = 1; 4871da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index); 4881da177e4SLinus Torvalds 4891da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, RLBF1_H); 4901da177e4SLinus Torvalds 4911da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->r1_numbuffs; ++i) { 4921da177e4SLinus Torvalds lbufd_index += 2; 4931da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 4941da177e4SLinus Torvalds 4951da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 4961da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 4971da177e4SLinus Torvalds 4981da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 4991da177e4SLinus Torvalds lbuf_count = 0; 5001da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 5011da177e4SLinus Torvalds } 5021da177e4SLinus Torvalds lbm_offset += 4; 5031da177e4SLinus Torvalds } 5041da177e4SLinus Torvalds 5051da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 2, RLBF1_T); 5061da177e4SLinus Torvalds he_writel(he_dev, he_dev->r1_numbuffs, RLBF1_C); 5071da177e4SLinus Torvalds } 5081da177e4SLinus Torvalds 5095b7c714eSRoland Dreier static void __devinit 5101da177e4SLinus Torvalds he_init_tx_lbfp(struct he_dev *he_dev) 5111da177e4SLinus Torvalds { 5121da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 5131da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 5141da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 5151da177e4SLinus Torvalds unsigned row_offset = he_dev->tx_startrow * he_dev->bytes_per_row; 5161da177e4SLinus Torvalds 5171da177e4SLinus Torvalds lbufd_index = he_dev->r0_numbuffs + he_dev->r1_numbuffs; 5181da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index); 5191da177e4SLinus Torvalds 5201da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, TLBF_H); 5211da177e4SLinus Torvalds 5221da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->tx_numbuffs; ++i) { 5231da177e4SLinus Torvalds lbufd_index += 1; 5241da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 5251da177e4SLinus Torvalds 5261da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 5271da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 5281da177e4SLinus Torvalds 5291da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 5301da177e4SLinus Torvalds lbuf_count = 0; 5311da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 5321da177e4SLinus Torvalds } 5331da177e4SLinus Torvalds lbm_offset += 2; 5341da177e4SLinus Torvalds } 5351da177e4SLinus Torvalds 5361da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 1, TLBF_T); 5371da177e4SLinus Torvalds } 5381da177e4SLinus Torvalds 5395b7c714eSRoland Dreier static int __devinit 5401da177e4SLinus Torvalds he_init_tpdrq(struct he_dev *he_dev) 5411da177e4SLinus Torvalds { 5421da177e4SLinus Torvalds he_dev->tpdrq_base = pci_alloc_consistent(he_dev->pci_dev, 5431da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq), &he_dev->tpdrq_phys); 5441da177e4SLinus Torvalds if (he_dev->tpdrq_base == NULL) { 5451da177e4SLinus Torvalds hprintk("failed to alloc tpdrq\n"); 5461da177e4SLinus Torvalds return -ENOMEM; 5471da177e4SLinus Torvalds } 5481da177e4SLinus Torvalds memset(he_dev->tpdrq_base, 0, 5491da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq)); 5501da177e4SLinus Torvalds 5511da177e4SLinus Torvalds he_dev->tpdrq_tail = he_dev->tpdrq_base; 5521da177e4SLinus Torvalds he_dev->tpdrq_head = he_dev->tpdrq_base; 5531da177e4SLinus Torvalds 5541da177e4SLinus Torvalds he_writel(he_dev, he_dev->tpdrq_phys, TPDRQ_B_H); 5551da177e4SLinus Torvalds he_writel(he_dev, 0, TPDRQ_T); 5561da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TPDRQ_SIZE - 1, TPDRQ_S); 5571da177e4SLinus Torvalds 5581da177e4SLinus Torvalds return 0; 5591da177e4SLinus Torvalds } 5601da177e4SLinus Torvalds 5615b7c714eSRoland Dreier static void __devinit 5621da177e4SLinus Torvalds he_init_cs_block(struct he_dev *he_dev) 5631da177e4SLinus Torvalds { 5641da177e4SLinus Torvalds unsigned clock, rate, delta; 5651da177e4SLinus Torvalds int reg; 5661da177e4SLinus Torvalds 5671da177e4SLinus Torvalds /* 5.1.7 cs block initialization */ 5681da177e4SLinus Torvalds 5691da177e4SLinus Torvalds for (reg = 0; reg < 0x20; ++reg) 5701da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0, CS_STTIM0 + reg); 5711da177e4SLinus Torvalds 5721da177e4SLinus Torvalds /* rate grid timer reload values */ 5731da177e4SLinus Torvalds 5741da177e4SLinus Torvalds clock = he_is622(he_dev) ? 66667000 : 50000000; 5751da177e4SLinus Torvalds rate = he_dev->atm_dev->link_rate; 5761da177e4SLinus Torvalds delta = rate / 16 / 2; 5771da177e4SLinus Torvalds 5781da177e4SLinus Torvalds for (reg = 0; reg < 0x10; ++reg) { 5791da177e4SLinus Torvalds /* 2.4 internal transmit function 5801da177e4SLinus Torvalds * 5811da177e4SLinus Torvalds * we initialize the first row in the rate grid. 5821da177e4SLinus Torvalds * values are period (in clock cycles) of timer 5831da177e4SLinus Torvalds */ 5841da177e4SLinus Torvalds unsigned period = clock / rate; 5851da177e4SLinus Torvalds 5861da177e4SLinus Torvalds he_writel_mbox(he_dev, period, CS_TGRLD0 + reg); 5871da177e4SLinus Torvalds rate -= delta; 5881da177e4SLinus Torvalds } 5891da177e4SLinus Torvalds 5901da177e4SLinus Torvalds if (he_is622(he_dev)) { 5911da177e4SLinus Torvalds /* table 5.2 (4 cells per lbuf) */ 5921da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000800fa, CS_ERTHR0); 5931da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000c33cb, CS_ERTHR1); 5941da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0010101b, CS_ERTHR2); 5951da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00181dac, CS_ERTHR3); 5961da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00280600, CS_ERTHR4); 5971da177e4SLinus Torvalds 5981da177e4SLinus Torvalds /* table 5.3, 5.4, 5.5, 5.6, 5.7 */ 5991da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x023de8b3, CS_ERCTL0); 6001da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1801, CS_ERCTL1); 6011da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_ERCTL2); 6021da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0); 6031da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_ERSTAT1); 6041da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x14585, CS_RTFWR); 6051da177e4SLinus Torvalds 6061da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4680, CS_RTATR); 6071da177e4SLinus Torvalds 6081da177e4SLinus Torvalds /* table 5.8 */ 6091da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00159ece, CS_TFBSET); 6101da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_WCRMAX); 6111da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5eb3, CS_WCRMIN); 6121da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xe8b3, CS_WCRINC); 6131da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xdeb3, CS_WCRDEC); 6141da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_WCRCEIL); 6151da177e4SLinus Torvalds 6161da177e4SLinus Torvalds /* table 5.9 */ 6171da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5, CS_OTPPER); 6181da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x14, CS_OTWPER); 6191da177e4SLinus Torvalds } else { 6201da177e4SLinus Torvalds /* table 5.1 (4 cells per lbuf) */ 6211da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000400ea, CS_ERTHR0); 6221da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00063388, CS_ERTHR1); 6231da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00081018, CS_ERTHR2); 6241da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000c1dac, CS_ERTHR3); 6251da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0014051a, CS_ERTHR4); 6261da177e4SLinus Torvalds 6271da177e4SLinus Torvalds /* table 5.3, 5.4, 5.5, 5.6, 5.7 */ 6281da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0235e4b1, CS_ERCTL0); 6291da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4701, CS_ERCTL1); 6301da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_ERCTL2); 6311da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0); 6321da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_ERSTAT1); 6331da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xf424, CS_RTFWR); 6341da177e4SLinus Torvalds 6351da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4680, CS_RTATR); 6361da177e4SLinus Torvalds 6371da177e4SLinus Torvalds /* table 5.8 */ 6381da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000563b7, CS_TFBSET); 6391da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_WCRMAX); 6401da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5ab1, CS_WCRMIN); 6411da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xe4b1, CS_WCRINC); 6421da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xdab1, CS_WCRDEC); 6431da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_WCRCEIL); 6441da177e4SLinus Torvalds 6451da177e4SLinus Torvalds /* table 5.9 */ 6461da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x6, CS_OTPPER); 6471da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1e, CS_OTWPER); 6481da177e4SLinus Torvalds } 6491da177e4SLinus Torvalds 6501da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x8, CS_OTTLIM); 6511da177e4SLinus Torvalds 6521da177e4SLinus Torvalds for (reg = 0; reg < 0x8; ++reg) 6531da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0, CS_HGRRT0 + reg); 6541da177e4SLinus Torvalds 6551da177e4SLinus Torvalds } 6561da177e4SLinus Torvalds 6575b7c714eSRoland Dreier static int __devinit 6581da177e4SLinus Torvalds he_init_cs_block_rcm(struct he_dev *he_dev) 6591da177e4SLinus Torvalds { 6601da177e4SLinus Torvalds unsigned (*rategrid)[16][16]; 6611da177e4SLinus Torvalds unsigned rate, delta; 6621da177e4SLinus Torvalds int i, j, reg; 6631da177e4SLinus Torvalds 6641da177e4SLinus Torvalds unsigned rate_atmf, exp, man; 6651da177e4SLinus Torvalds unsigned long long rate_cps; 6661da177e4SLinus Torvalds int mult, buf, buf_limit = 4; 6671da177e4SLinus Torvalds 6681da177e4SLinus Torvalds rategrid = kmalloc( sizeof(unsigned) * 16 * 16, GFP_KERNEL); 6691da177e4SLinus Torvalds if (!rategrid) 6701da177e4SLinus Torvalds return -ENOMEM; 6711da177e4SLinus Torvalds 6721da177e4SLinus Torvalds /* initialize rate grid group table */ 6731da177e4SLinus Torvalds 6741da177e4SLinus Torvalds for (reg = 0x0; reg < 0xff; ++reg) 6751da177e4SLinus Torvalds he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg); 6761da177e4SLinus Torvalds 6771da177e4SLinus Torvalds /* initialize rate controller groups */ 6781da177e4SLinus Torvalds 6791da177e4SLinus Torvalds for (reg = 0x100; reg < 0x1ff; ++reg) 6801da177e4SLinus Torvalds he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg); 6811da177e4SLinus Torvalds 6821da177e4SLinus Torvalds /* initialize tNrm lookup table */ 6831da177e4SLinus Torvalds 6841da177e4SLinus Torvalds /* the manual makes reference to a routine in a sample driver 6851da177e4SLinus Torvalds for proper configuration; fortunately, we only need this 6861da177e4SLinus Torvalds in order to support abr connection */ 6871da177e4SLinus Torvalds 6881da177e4SLinus Torvalds /* initialize rate to group table */ 6891da177e4SLinus Torvalds 6901da177e4SLinus Torvalds rate = he_dev->atm_dev->link_rate; 6911da177e4SLinus Torvalds delta = rate / 32; 6921da177e4SLinus Torvalds 6931da177e4SLinus Torvalds /* 6941da177e4SLinus Torvalds * 2.4 transmit internal functions 6951da177e4SLinus Torvalds * 6961da177e4SLinus Torvalds * we construct a copy of the rate grid used by the scheduler 6971da177e4SLinus Torvalds * in order to construct the rate to group table below 6981da177e4SLinus Torvalds */ 6991da177e4SLinus Torvalds 7001da177e4SLinus Torvalds for (j = 0; j < 16; j++) { 7011da177e4SLinus Torvalds (*rategrid)[0][j] = rate; 7021da177e4SLinus Torvalds rate -= delta; 7031da177e4SLinus Torvalds } 7041da177e4SLinus Torvalds 7051da177e4SLinus Torvalds for (i = 1; i < 16; i++) 7061da177e4SLinus Torvalds for (j = 0; j < 16; j++) 7071da177e4SLinus Torvalds if (i > 14) 7081da177e4SLinus Torvalds (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 4; 7091da177e4SLinus Torvalds else 7101da177e4SLinus Torvalds (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 2; 7111da177e4SLinus Torvalds 7121da177e4SLinus Torvalds /* 7131da177e4SLinus Torvalds * 2.4 transmit internal function 7141da177e4SLinus Torvalds * 7151da177e4SLinus Torvalds * this table maps the upper 5 bits of exponent and mantissa 7161da177e4SLinus Torvalds * of the atm forum representation of the rate into an index 7171da177e4SLinus Torvalds * on rate grid 7181da177e4SLinus Torvalds */ 7191da177e4SLinus Torvalds 7201da177e4SLinus Torvalds rate_atmf = 0; 7211da177e4SLinus Torvalds while (rate_atmf < 0x400) { 7221da177e4SLinus Torvalds man = (rate_atmf & 0x1f) << 4; 7231da177e4SLinus Torvalds exp = rate_atmf >> 5; 7241da177e4SLinus Torvalds 7251da177e4SLinus Torvalds /* 7261da177e4SLinus Torvalds instead of '/ 512', use '>> 9' to prevent a call 7271da177e4SLinus Torvalds to divdu3 on x86 platforms 7281da177e4SLinus Torvalds */ 7291da177e4SLinus Torvalds rate_cps = (unsigned long long) (1 << exp) * (man + 512) >> 9; 7301da177e4SLinus Torvalds 7311da177e4SLinus Torvalds if (rate_cps < 10) 7321da177e4SLinus Torvalds rate_cps = 10; /* 2.2.1 minimum payload rate is 10 cps */ 7331da177e4SLinus Torvalds 7341da177e4SLinus Torvalds for (i = 255; i > 0; i--) 7351da177e4SLinus Torvalds if ((*rategrid)[i/16][i%16] >= rate_cps) 7361da177e4SLinus Torvalds break; /* pick nearest rate instead? */ 7371da177e4SLinus Torvalds 7381da177e4SLinus Torvalds /* 7391da177e4SLinus Torvalds * each table entry is 16 bits: (rate grid index (8 bits) 7401da177e4SLinus Torvalds * and a buffer limit (8 bits) 7411da177e4SLinus Torvalds * there are two table entries in each 32-bit register 7421da177e4SLinus Torvalds */ 7431da177e4SLinus Torvalds 7441da177e4SLinus Torvalds #ifdef notdef 7451da177e4SLinus Torvalds buf = rate_cps * he_dev->tx_numbuffs / 7461da177e4SLinus Torvalds (he_dev->atm_dev->link_rate * 2); 7471da177e4SLinus Torvalds #else 7481da177e4SLinus Torvalds /* this is pretty, but avoids _divdu3 and is mostly correct */ 7491da177e4SLinus Torvalds mult = he_dev->atm_dev->link_rate / ATM_OC3_PCR; 7501da177e4SLinus Torvalds if (rate_cps > (272 * mult)) 7511da177e4SLinus Torvalds buf = 4; 7521da177e4SLinus Torvalds else if (rate_cps > (204 * mult)) 7531da177e4SLinus Torvalds buf = 3; 7541da177e4SLinus Torvalds else if (rate_cps > (136 * mult)) 7551da177e4SLinus Torvalds buf = 2; 7561da177e4SLinus Torvalds else if (rate_cps > (68 * mult)) 7571da177e4SLinus Torvalds buf = 1; 7581da177e4SLinus Torvalds else 7591da177e4SLinus Torvalds buf = 0; 7601da177e4SLinus Torvalds #endif 7611da177e4SLinus Torvalds if (buf > buf_limit) 7621da177e4SLinus Torvalds buf = buf_limit; 7631da177e4SLinus Torvalds reg = (reg << 16) | ((i << 8) | buf); 7641da177e4SLinus Torvalds 7651da177e4SLinus Torvalds #define RTGTBL_OFFSET 0x400 7661da177e4SLinus Torvalds 7671da177e4SLinus Torvalds if (rate_atmf & 0x1) 7681da177e4SLinus Torvalds he_writel_rcm(he_dev, reg, 7691da177e4SLinus Torvalds CONFIG_RCMABR + RTGTBL_OFFSET + (rate_atmf >> 1)); 7701da177e4SLinus Torvalds 7711da177e4SLinus Torvalds ++rate_atmf; 7721da177e4SLinus Torvalds } 7731da177e4SLinus Torvalds 7741da177e4SLinus Torvalds kfree(rategrid); 7751da177e4SLinus Torvalds return 0; 7761da177e4SLinus Torvalds } 7771da177e4SLinus Torvalds 7785b7c714eSRoland Dreier static int __devinit 7791da177e4SLinus Torvalds he_init_group(struct he_dev *he_dev, int group) 7801da177e4SLinus Torvalds { 7811da177e4SLinus Torvalds int i; 7821da177e4SLinus Torvalds 7831da177e4SLinus Torvalds /* small buffer pool */ 7841da177e4SLinus Torvalds he_dev->rbps_pool = pci_pool_create("rbps", he_dev->pci_dev, 7851da177e4SLinus Torvalds CONFIG_RBPS_BUFSIZE, 8, 0); 7861da177e4SLinus Torvalds if (he_dev->rbps_pool == NULL) { 7871da177e4SLinus Torvalds hprintk("unable to create rbps pages\n"); 7881da177e4SLinus Torvalds return -ENOMEM; 7891da177e4SLinus Torvalds } 7901da177e4SLinus Torvalds 7911da177e4SLinus Torvalds he_dev->rbps_base = pci_alloc_consistent(he_dev->pci_dev, 7921da177e4SLinus Torvalds CONFIG_RBPS_SIZE * sizeof(struct he_rbp), &he_dev->rbps_phys); 7931da177e4SLinus Torvalds if (he_dev->rbps_base == NULL) { 7945d5baa92Sroel kluin hprintk("failed to alloc rbps_base\n"); 7955d5baa92Sroel kluin goto out_destroy_rbps_pool; 7961da177e4SLinus Torvalds } 7971da177e4SLinus Torvalds memset(he_dev->rbps_base, 0, CONFIG_RBPS_SIZE * sizeof(struct he_rbp)); 7981da177e4SLinus Torvalds he_dev->rbps_virt = kmalloc(CONFIG_RBPS_SIZE * sizeof(struct he_virt), GFP_KERNEL); 7995d5baa92Sroel kluin if (he_dev->rbps_virt == NULL) { 8005d5baa92Sroel kluin hprintk("failed to alloc rbps_virt\n"); 8015d5baa92Sroel kluin goto out_free_rbps_base; 8025d5baa92Sroel kluin } 8031da177e4SLinus Torvalds 8041da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPS_SIZE; ++i) { 8051da177e4SLinus Torvalds dma_addr_t dma_handle; 8061da177e4SLinus Torvalds void *cpuaddr; 8071da177e4SLinus Torvalds 808441e143eSChristoph Lameter cpuaddr = pci_pool_alloc(he_dev->rbps_pool, GFP_KERNEL|GFP_DMA, &dma_handle); 8091da177e4SLinus Torvalds if (cpuaddr == NULL) 8105d5baa92Sroel kluin goto out_free_rbps_virt; 8111da177e4SLinus Torvalds 8121da177e4SLinus Torvalds he_dev->rbps_virt[i].virt = cpuaddr; 8131da177e4SLinus Torvalds he_dev->rbps_base[i].status = RBP_LOANED | RBP_SMALLBUF | (i << RBP_INDEX_OFF); 8141da177e4SLinus Torvalds he_dev->rbps_base[i].phys = dma_handle; 8151da177e4SLinus Torvalds 8161da177e4SLinus Torvalds } 8171da177e4SLinus Torvalds he_dev->rbps_tail = &he_dev->rbps_base[CONFIG_RBPS_SIZE - 1]; 8181da177e4SLinus Torvalds 8191da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbps_phys, G0_RBPS_S + (group * 32)); 8201da177e4SLinus Torvalds he_writel(he_dev, RBPS_MASK(he_dev->rbps_tail), 8211da177e4SLinus Torvalds G0_RBPS_T + (group * 32)); 8221da177e4SLinus Torvalds he_writel(he_dev, CONFIG_RBPS_BUFSIZE/4, 8231da177e4SLinus Torvalds G0_RBPS_BS + (group * 32)); 8241da177e4SLinus Torvalds he_writel(he_dev, 8251da177e4SLinus Torvalds RBP_THRESH(CONFIG_RBPS_THRESH) | 8261da177e4SLinus Torvalds RBP_QSIZE(CONFIG_RBPS_SIZE - 1) | 8271da177e4SLinus Torvalds RBP_INT_ENB, 8281da177e4SLinus Torvalds G0_RBPS_QI + (group * 32)); 8291da177e4SLinus Torvalds 8301da177e4SLinus Torvalds /* large buffer pool */ 8311da177e4SLinus Torvalds he_dev->rbpl_pool = pci_pool_create("rbpl", he_dev->pci_dev, 8321da177e4SLinus Torvalds CONFIG_RBPL_BUFSIZE, 8, 0); 8331da177e4SLinus Torvalds if (he_dev->rbpl_pool == NULL) { 8341da177e4SLinus Torvalds hprintk("unable to create rbpl pool\n"); 8355d5baa92Sroel kluin goto out_free_rbps_virt; 8361da177e4SLinus Torvalds } 8371da177e4SLinus Torvalds 8381da177e4SLinus Torvalds he_dev->rbpl_base = pci_alloc_consistent(he_dev->pci_dev, 8391da177e4SLinus Torvalds CONFIG_RBPL_SIZE * sizeof(struct he_rbp), &he_dev->rbpl_phys); 8401da177e4SLinus Torvalds if (he_dev->rbpl_base == NULL) { 8415d5baa92Sroel kluin hprintk("failed to alloc rbpl_base\n"); 8425d5baa92Sroel kluin goto out_destroy_rbpl_pool; 8431da177e4SLinus Torvalds } 8441da177e4SLinus Torvalds memset(he_dev->rbpl_base, 0, CONFIG_RBPL_SIZE * sizeof(struct he_rbp)); 8451da177e4SLinus Torvalds he_dev->rbpl_virt = kmalloc(CONFIG_RBPL_SIZE * sizeof(struct he_virt), GFP_KERNEL); 8465d5baa92Sroel kluin if (he_dev->rbpl_virt == NULL) { 8475d5baa92Sroel kluin hprintk("failed to alloc rbpl_virt\n"); 8485d5baa92Sroel kluin goto out_free_rbpl_base; 8495d5baa92Sroel kluin } 8501da177e4SLinus Torvalds 8511da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPL_SIZE; ++i) { 8521da177e4SLinus Torvalds dma_addr_t dma_handle; 8531da177e4SLinus Torvalds void *cpuaddr; 8541da177e4SLinus Torvalds 855441e143eSChristoph Lameter cpuaddr = pci_pool_alloc(he_dev->rbpl_pool, GFP_KERNEL|GFP_DMA, &dma_handle); 8561da177e4SLinus Torvalds if (cpuaddr == NULL) 8575d5baa92Sroel kluin goto out_free_rbpl_virt; 8581da177e4SLinus Torvalds 8591da177e4SLinus Torvalds he_dev->rbpl_virt[i].virt = cpuaddr; 8601da177e4SLinus Torvalds he_dev->rbpl_base[i].status = RBP_LOANED | (i << RBP_INDEX_OFF); 8611da177e4SLinus Torvalds he_dev->rbpl_base[i].phys = dma_handle; 8621da177e4SLinus Torvalds } 8631da177e4SLinus Torvalds he_dev->rbpl_tail = &he_dev->rbpl_base[CONFIG_RBPL_SIZE - 1]; 8641da177e4SLinus Torvalds 8651da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbpl_phys, G0_RBPL_S + (group * 32)); 8661da177e4SLinus Torvalds he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), 8671da177e4SLinus Torvalds G0_RBPL_T + (group * 32)); 8681da177e4SLinus Torvalds he_writel(he_dev, CONFIG_RBPL_BUFSIZE/4, 8691da177e4SLinus Torvalds G0_RBPL_BS + (group * 32)); 8701da177e4SLinus Torvalds he_writel(he_dev, 8711da177e4SLinus Torvalds RBP_THRESH(CONFIG_RBPL_THRESH) | 8721da177e4SLinus Torvalds RBP_QSIZE(CONFIG_RBPL_SIZE - 1) | 8731da177e4SLinus Torvalds RBP_INT_ENB, 8741da177e4SLinus Torvalds G0_RBPL_QI + (group * 32)); 8751da177e4SLinus Torvalds 8761da177e4SLinus Torvalds /* rx buffer ready queue */ 8771da177e4SLinus Torvalds 8781da177e4SLinus Torvalds he_dev->rbrq_base = pci_alloc_consistent(he_dev->pci_dev, 8791da177e4SLinus Torvalds CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), &he_dev->rbrq_phys); 8801da177e4SLinus Torvalds if (he_dev->rbrq_base == NULL) { 8811da177e4SLinus Torvalds hprintk("failed to allocate rbrq\n"); 8825d5baa92Sroel kluin goto out_free_rbpl_virt; 8831da177e4SLinus Torvalds } 8841da177e4SLinus Torvalds memset(he_dev->rbrq_base, 0, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq)); 8851da177e4SLinus Torvalds 8861da177e4SLinus Torvalds he_dev->rbrq_head = he_dev->rbrq_base; 8871da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbrq_phys, G0_RBRQ_ST + (group * 16)); 8881da177e4SLinus Torvalds he_writel(he_dev, 0, G0_RBRQ_H + (group * 16)); 8891da177e4SLinus Torvalds he_writel(he_dev, 8901da177e4SLinus Torvalds RBRQ_THRESH(CONFIG_RBRQ_THRESH) | RBRQ_SIZE(CONFIG_RBRQ_SIZE - 1), 8911da177e4SLinus Torvalds G0_RBRQ_Q + (group * 16)); 8921da177e4SLinus Torvalds if (irq_coalesce) { 8931da177e4SLinus Torvalds hprintk("coalescing interrupts\n"); 8941da177e4SLinus Torvalds he_writel(he_dev, RBRQ_TIME(768) | RBRQ_COUNT(7), 8951da177e4SLinus Torvalds G0_RBRQ_I + (group * 16)); 8961da177e4SLinus Torvalds } else 8971da177e4SLinus Torvalds he_writel(he_dev, RBRQ_TIME(0) | RBRQ_COUNT(1), 8981da177e4SLinus Torvalds G0_RBRQ_I + (group * 16)); 8991da177e4SLinus Torvalds 9001da177e4SLinus Torvalds /* tx buffer ready queue */ 9011da177e4SLinus Torvalds 9021da177e4SLinus Torvalds he_dev->tbrq_base = pci_alloc_consistent(he_dev->pci_dev, 9031da177e4SLinus Torvalds CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), &he_dev->tbrq_phys); 9041da177e4SLinus Torvalds if (he_dev->tbrq_base == NULL) { 9051da177e4SLinus Torvalds hprintk("failed to allocate tbrq\n"); 9065d5baa92Sroel kluin goto out_free_rbpq_base; 9071da177e4SLinus Torvalds } 9081da177e4SLinus Torvalds memset(he_dev->tbrq_base, 0, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq)); 9091da177e4SLinus Torvalds 9101da177e4SLinus Torvalds he_dev->tbrq_head = he_dev->tbrq_base; 9111da177e4SLinus Torvalds 9121da177e4SLinus Torvalds he_writel(he_dev, he_dev->tbrq_phys, G0_TBRQ_B_T + (group * 16)); 9131da177e4SLinus Torvalds he_writel(he_dev, 0, G0_TBRQ_H + (group * 16)); 9141da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TBRQ_SIZE - 1, G0_TBRQ_S + (group * 16)); 9151da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TBRQ_THRESH, G0_TBRQ_THRESH + (group * 16)); 9161da177e4SLinus Torvalds 9171da177e4SLinus Torvalds return 0; 9185d5baa92Sroel kluin 9195d5baa92Sroel kluin out_free_rbpq_base: 9205d5baa92Sroel kluin pci_free_consistent(he_dev->pci_dev, CONFIG_RBRQ_SIZE * 9215d5baa92Sroel kluin sizeof(struct he_rbrq), he_dev->rbrq_base, 9225d5baa92Sroel kluin he_dev->rbrq_phys); 9235d5baa92Sroel kluin i = CONFIG_RBPL_SIZE; 9245d5baa92Sroel kluin out_free_rbpl_virt: 9251b66c1efSJuha Leppanen while (i--) 9261b66c1efSJuha Leppanen pci_pool_free(he_dev->rbpl_pool, he_dev->rbpl_virt[i].virt, 9271b66c1efSJuha Leppanen he_dev->rbpl_base[i].phys); 9285d5baa92Sroel kluin kfree(he_dev->rbpl_virt); 9295d5baa92Sroel kluin 9305d5baa92Sroel kluin out_free_rbpl_base: 9315d5baa92Sroel kluin pci_free_consistent(he_dev->pci_dev, CONFIG_RBPL_SIZE * 9325d5baa92Sroel kluin sizeof(struct he_rbp), he_dev->rbpl_base, 9335d5baa92Sroel kluin he_dev->rbpl_phys); 9345d5baa92Sroel kluin out_destroy_rbpl_pool: 9355d5baa92Sroel kluin pci_pool_destroy(he_dev->rbpl_pool); 9365d5baa92Sroel kluin 9371b66c1efSJuha Leppanen i = CONFIG_RBPS_SIZE; 9385d5baa92Sroel kluin out_free_rbps_virt: 9391b66c1efSJuha Leppanen while (i--) 9401b66c1efSJuha Leppanen pci_pool_free(he_dev->rbps_pool, he_dev->rbps_virt[i].virt, 9411b66c1efSJuha Leppanen he_dev->rbps_base[i].phys); 9425d5baa92Sroel kluin kfree(he_dev->rbps_virt); 9435d5baa92Sroel kluin 9445d5baa92Sroel kluin out_free_rbps_base: 9455d5baa92Sroel kluin pci_free_consistent(he_dev->pci_dev, CONFIG_RBPS_SIZE * 9465d5baa92Sroel kluin sizeof(struct he_rbp), he_dev->rbps_base, 9475d5baa92Sroel kluin he_dev->rbps_phys); 9485d5baa92Sroel kluin out_destroy_rbps_pool: 9495d5baa92Sroel kluin pci_pool_destroy(he_dev->rbps_pool); 9505d5baa92Sroel kluin return -ENOMEM; 9511da177e4SLinus Torvalds } 9521da177e4SLinus Torvalds 9535b7c714eSRoland Dreier static int __devinit 9541da177e4SLinus Torvalds he_init_irq(struct he_dev *he_dev) 9551da177e4SLinus Torvalds { 9561da177e4SLinus Torvalds int i; 9571da177e4SLinus Torvalds 9581da177e4SLinus Torvalds /* 2.9.3.5 tail offset for each interrupt queue is located after the 9591da177e4SLinus Torvalds end of the interrupt queue */ 9601da177e4SLinus Torvalds 9611da177e4SLinus Torvalds he_dev->irq_base = pci_alloc_consistent(he_dev->pci_dev, 9621da177e4SLinus Torvalds (CONFIG_IRQ_SIZE+1) * sizeof(struct he_irq), &he_dev->irq_phys); 9631da177e4SLinus Torvalds if (he_dev->irq_base == NULL) { 9641da177e4SLinus Torvalds hprintk("failed to allocate irq\n"); 9651da177e4SLinus Torvalds return -ENOMEM; 9661da177e4SLinus Torvalds } 9671da177e4SLinus Torvalds he_dev->irq_tailoffset = (unsigned *) 9681da177e4SLinus Torvalds &he_dev->irq_base[CONFIG_IRQ_SIZE]; 9691da177e4SLinus Torvalds *he_dev->irq_tailoffset = 0; 9701da177e4SLinus Torvalds he_dev->irq_head = he_dev->irq_base; 9711da177e4SLinus Torvalds he_dev->irq_tail = he_dev->irq_base; 9721da177e4SLinus Torvalds 9731da177e4SLinus Torvalds for (i = 0; i < CONFIG_IRQ_SIZE; ++i) 9741da177e4SLinus Torvalds he_dev->irq_base[i].isw = ITYPE_INVALID; 9751da177e4SLinus Torvalds 9761da177e4SLinus Torvalds he_writel(he_dev, he_dev->irq_phys, IRQ0_BASE); 9771da177e4SLinus Torvalds he_writel(he_dev, 9781da177e4SLinus Torvalds IRQ_SIZE(CONFIG_IRQ_SIZE) | IRQ_THRESH(CONFIG_IRQ_THRESH), 9791da177e4SLinus Torvalds IRQ0_HEAD); 9801da177e4SLinus Torvalds he_writel(he_dev, IRQ_INT_A | IRQ_TYPE_LINE, IRQ0_CNTL); 9811da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ0_DATA); 9821da177e4SLinus Torvalds 9831da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_BASE); 9841da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_HEAD); 9851da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_CNTL); 9861da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_DATA); 9871da177e4SLinus Torvalds 9881da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_BASE); 9891da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_HEAD); 9901da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_CNTL); 9911da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_DATA); 9921da177e4SLinus Torvalds 9931da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_BASE); 9941da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_HEAD); 9951da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_CNTL); 9961da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_DATA); 9971da177e4SLinus Torvalds 9981da177e4SLinus Torvalds /* 2.9.3.2 interrupt queue mapping registers */ 9991da177e4SLinus Torvalds 10001da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_10_MAP); 10011da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_32_MAP); 10021da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_54_MAP); 10031da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_76_MAP); 10041da177e4SLinus Torvalds 1005dace1453SThomas Gleixner if (request_irq(he_dev->pci_dev->irq, he_irq_handler, IRQF_DISABLED|IRQF_SHARED, DEV_LABEL, he_dev)) { 10061da177e4SLinus Torvalds hprintk("irq %d already in use\n", he_dev->pci_dev->irq); 10071da177e4SLinus Torvalds return -EINVAL; 10081da177e4SLinus Torvalds } 10091da177e4SLinus Torvalds 10101da177e4SLinus Torvalds he_dev->irq = he_dev->pci_dev->irq; 10111da177e4SLinus Torvalds 10121da177e4SLinus Torvalds return 0; 10131da177e4SLinus Torvalds } 10141da177e4SLinus Torvalds 1015d17f0865SChas Williams static int __devinit 10161da177e4SLinus Torvalds he_start(struct atm_dev *dev) 10171da177e4SLinus Torvalds { 10181da177e4SLinus Torvalds struct he_dev *he_dev; 10191da177e4SLinus Torvalds struct pci_dev *pci_dev; 10201da177e4SLinus Torvalds unsigned long membase; 10211da177e4SLinus Torvalds 10221da177e4SLinus Torvalds u16 command; 10231da177e4SLinus Torvalds u32 gen_cntl_0, host_cntl, lb_swap; 10241da177e4SLinus Torvalds u8 cache_size, timer; 10251da177e4SLinus Torvalds 10261da177e4SLinus Torvalds unsigned err; 10271da177e4SLinus Torvalds unsigned int status, reg; 10281da177e4SLinus Torvalds int i, group; 10291da177e4SLinus Torvalds 10301da177e4SLinus Torvalds he_dev = HE_DEV(dev); 10311da177e4SLinus Torvalds pci_dev = he_dev->pci_dev; 10321da177e4SLinus Torvalds 10331da177e4SLinus Torvalds membase = pci_resource_start(pci_dev, 0); 10341da177e4SLinus Torvalds HPRINTK("membase = 0x%lx irq = %d.\n", membase, pci_dev->irq); 10351da177e4SLinus Torvalds 10361da177e4SLinus Torvalds /* 10371da177e4SLinus Torvalds * pci bus controller initialization 10381da177e4SLinus Torvalds */ 10391da177e4SLinus Torvalds 10401da177e4SLinus Torvalds /* 4.3 pci bus controller-specific initialization */ 10411da177e4SLinus Torvalds if (pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0) != 0) { 10421da177e4SLinus Torvalds hprintk("can't read GEN_CNTL_0\n"); 10431da177e4SLinus Torvalds return -EINVAL; 10441da177e4SLinus Torvalds } 10451da177e4SLinus Torvalds gen_cntl_0 |= (MRL_ENB | MRM_ENB | IGNORE_TIMEOUT); 10461da177e4SLinus Torvalds if (pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0) != 0) { 10471da177e4SLinus Torvalds hprintk("can't write GEN_CNTL_0.\n"); 10481da177e4SLinus Torvalds return -EINVAL; 10491da177e4SLinus Torvalds } 10501da177e4SLinus Torvalds 10511da177e4SLinus Torvalds if (pci_read_config_word(pci_dev, PCI_COMMAND, &command) != 0) { 10521da177e4SLinus Torvalds hprintk("can't read PCI_COMMAND.\n"); 10531da177e4SLinus Torvalds return -EINVAL; 10541da177e4SLinus Torvalds } 10551da177e4SLinus Torvalds 10561da177e4SLinus Torvalds command |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE); 10571da177e4SLinus Torvalds if (pci_write_config_word(pci_dev, PCI_COMMAND, command) != 0) { 10581da177e4SLinus Torvalds hprintk("can't enable memory.\n"); 10591da177e4SLinus Torvalds return -EINVAL; 10601da177e4SLinus Torvalds } 10611da177e4SLinus Torvalds 10621da177e4SLinus Torvalds if (pci_read_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, &cache_size)) { 10631da177e4SLinus Torvalds hprintk("can't read cache line size?\n"); 10641da177e4SLinus Torvalds return -EINVAL; 10651da177e4SLinus Torvalds } 10661da177e4SLinus Torvalds 10671da177e4SLinus Torvalds if (cache_size < 16) { 10681da177e4SLinus Torvalds cache_size = 16; 10691da177e4SLinus Torvalds if (pci_write_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, cache_size)) 10701da177e4SLinus Torvalds hprintk("can't set cache line size to %d\n", cache_size); 10711da177e4SLinus Torvalds } 10721da177e4SLinus Torvalds 10731da177e4SLinus Torvalds if (pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &timer)) { 10741da177e4SLinus Torvalds hprintk("can't read latency timer?\n"); 10751da177e4SLinus Torvalds return -EINVAL; 10761da177e4SLinus Torvalds } 10771da177e4SLinus Torvalds 10781da177e4SLinus Torvalds /* from table 3.9 10791da177e4SLinus Torvalds * 10801da177e4SLinus Torvalds * LAT_TIMER = 1 + AVG_LAT + BURST_SIZE/BUS_SIZE 10811da177e4SLinus Torvalds * 10821da177e4SLinus Torvalds * AVG_LAT: The average first data read/write latency [maximum 16 clock cycles] 10831da177e4SLinus Torvalds * BURST_SIZE: 1536 bytes (read) for 622, 768 bytes (read) for 155 [192 clock cycles] 10841da177e4SLinus Torvalds * 10851da177e4SLinus Torvalds */ 10861da177e4SLinus Torvalds #define LAT_TIMER 209 10871da177e4SLinus Torvalds if (timer < LAT_TIMER) { 10881da177e4SLinus Torvalds HPRINTK("latency timer was %d, setting to %d\n", timer, LAT_TIMER); 10891da177e4SLinus Torvalds timer = LAT_TIMER; 10901da177e4SLinus Torvalds if (pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, timer)) 10911da177e4SLinus Torvalds hprintk("can't set latency timer to %d\n", timer); 10921da177e4SLinus Torvalds } 10931da177e4SLinus Torvalds 10941da177e4SLinus Torvalds if (!(he_dev->membase = ioremap(membase, HE_REGMAP_SIZE))) { 10951da177e4SLinus Torvalds hprintk("can't set up page mapping\n"); 10961da177e4SLinus Torvalds return -EINVAL; 10971da177e4SLinus Torvalds } 10981da177e4SLinus Torvalds 10991da177e4SLinus Torvalds /* 4.4 card reset */ 11001da177e4SLinus Torvalds he_writel(he_dev, 0x0, RESET_CNTL); 11011da177e4SLinus Torvalds he_writel(he_dev, 0xff, RESET_CNTL); 11021da177e4SLinus Torvalds 11031da177e4SLinus Torvalds udelay(16*1000); /* 16 ms */ 11041da177e4SLinus Torvalds status = he_readl(he_dev, RESET_CNTL); 11051da177e4SLinus Torvalds if ((status & BOARD_RST_STATUS) == 0) { 11061da177e4SLinus Torvalds hprintk("reset failed\n"); 11071da177e4SLinus Torvalds return -EINVAL; 11081da177e4SLinus Torvalds } 11091da177e4SLinus Torvalds 11101da177e4SLinus Torvalds /* 4.5 set bus width */ 11111da177e4SLinus Torvalds host_cntl = he_readl(he_dev, HOST_CNTL); 11121da177e4SLinus Torvalds if (host_cntl & PCI_BUS_SIZE64) 11131da177e4SLinus Torvalds gen_cntl_0 |= ENBL_64; 11141da177e4SLinus Torvalds else 11151da177e4SLinus Torvalds gen_cntl_0 &= ~ENBL_64; 11161da177e4SLinus Torvalds 11171da177e4SLinus Torvalds if (disable64 == 1) { 11181da177e4SLinus Torvalds hprintk("disabling 64-bit pci bus transfers\n"); 11191da177e4SLinus Torvalds gen_cntl_0 &= ~ENBL_64; 11201da177e4SLinus Torvalds } 11211da177e4SLinus Torvalds 11221da177e4SLinus Torvalds if (gen_cntl_0 & ENBL_64) 11231da177e4SLinus Torvalds hprintk("64-bit transfers enabled\n"); 11241da177e4SLinus Torvalds 11251da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 11261da177e4SLinus Torvalds 11271da177e4SLinus Torvalds /* 4.7 read prom contents */ 11281da177e4SLinus Torvalds for (i = 0; i < PROD_ID_LEN; ++i) 11291da177e4SLinus Torvalds he_dev->prod_id[i] = read_prom_byte(he_dev, PROD_ID + i); 11301da177e4SLinus Torvalds 11311da177e4SLinus Torvalds he_dev->media = read_prom_byte(he_dev, MEDIA); 11321da177e4SLinus Torvalds 11331da177e4SLinus Torvalds for (i = 0; i < 6; ++i) 11341da177e4SLinus Torvalds dev->esi[i] = read_prom_byte(he_dev, MAC_ADDR + i); 11351da177e4SLinus Torvalds 11361da177e4SLinus Torvalds hprintk("%s%s, %x:%x:%x:%x:%x:%x\n", 11371da177e4SLinus Torvalds he_dev->prod_id, 11381da177e4SLinus Torvalds he_dev->media & 0x40 ? "SM" : "MM", 11391da177e4SLinus Torvalds dev->esi[0], 11401da177e4SLinus Torvalds dev->esi[1], 11411da177e4SLinus Torvalds dev->esi[2], 11421da177e4SLinus Torvalds dev->esi[3], 11431da177e4SLinus Torvalds dev->esi[4], 11441da177e4SLinus Torvalds dev->esi[5]); 11451da177e4SLinus Torvalds he_dev->atm_dev->link_rate = he_is622(he_dev) ? 11461da177e4SLinus Torvalds ATM_OC12_PCR : ATM_OC3_PCR; 11471da177e4SLinus Torvalds 11481da177e4SLinus Torvalds /* 4.6 set host endianess */ 11491da177e4SLinus Torvalds lb_swap = he_readl(he_dev, LB_SWAP); 11501da177e4SLinus Torvalds if (he_is622(he_dev)) 11511da177e4SLinus Torvalds lb_swap &= ~XFER_SIZE; /* 4 cells */ 11521da177e4SLinus Torvalds else 11531da177e4SLinus Torvalds lb_swap |= XFER_SIZE; /* 8 cells */ 11541da177e4SLinus Torvalds #ifdef __BIG_ENDIAN 11551da177e4SLinus Torvalds lb_swap |= DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST; 11561da177e4SLinus Torvalds #else 11571da177e4SLinus Torvalds lb_swap &= ~(DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST | 11581da177e4SLinus Torvalds DATA_WR_SWAP | DATA_RD_SWAP | DESC_RD_SWAP); 11591da177e4SLinus Torvalds #endif /* __BIG_ENDIAN */ 11601da177e4SLinus Torvalds he_writel(he_dev, lb_swap, LB_SWAP); 11611da177e4SLinus Torvalds 11621da177e4SLinus Torvalds /* 4.8 sdram controller initialization */ 11631da177e4SLinus Torvalds he_writel(he_dev, he_is622(he_dev) ? LB_64_ENB : 0x0, SDRAM_CTL); 11641da177e4SLinus Torvalds 11651da177e4SLinus Torvalds /* 4.9 initialize rnum value */ 11661da177e4SLinus Torvalds lb_swap |= SWAP_RNUM_MAX(0xf); 11671da177e4SLinus Torvalds he_writel(he_dev, lb_swap, LB_SWAP); 11681da177e4SLinus Torvalds 11691da177e4SLinus Torvalds /* 4.10 initialize the interrupt queues */ 11701da177e4SLinus Torvalds if ((err = he_init_irq(he_dev)) != 0) 11711da177e4SLinus Torvalds return err; 11721da177e4SLinus Torvalds 11731da177e4SLinus Torvalds /* 4.11 enable pci bus controller state machines */ 11741da177e4SLinus Torvalds host_cntl |= (OUTFF_ENB | CMDFF_ENB | 11751da177e4SLinus Torvalds QUICK_RD_RETRY | QUICK_WR_RETRY | PERR_INT_ENB); 11761da177e4SLinus Torvalds he_writel(he_dev, host_cntl, HOST_CNTL); 11771da177e4SLinus Torvalds 11781da177e4SLinus Torvalds gen_cntl_0 |= INT_PROC_ENBL|INIT_ENB; 11791da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 11801da177e4SLinus Torvalds 11811da177e4SLinus Torvalds /* 11821da177e4SLinus Torvalds * atm network controller initialization 11831da177e4SLinus Torvalds */ 11841da177e4SLinus Torvalds 11851da177e4SLinus Torvalds /* 5.1.1 generic configuration state */ 11861da177e4SLinus Torvalds 11871da177e4SLinus Torvalds /* 11881da177e4SLinus Torvalds * local (cell) buffer memory map 11891da177e4SLinus Torvalds * 11901da177e4SLinus Torvalds * HE155 HE622 11911da177e4SLinus Torvalds * 11921da177e4SLinus Torvalds * 0 ____________1023 bytes 0 _______________________2047 bytes 11931da177e4SLinus Torvalds * | | | | | 11941da177e4SLinus Torvalds * | utility | | rx0 | | 11951da177e4SLinus Torvalds * 5|____________| 255|___________________| u | 11961da177e4SLinus Torvalds * 6| | 256| | t | 11971da177e4SLinus Torvalds * | | | | i | 11981da177e4SLinus Torvalds * | rx0 | row | tx | l | 11991da177e4SLinus Torvalds * | | | | i | 12001da177e4SLinus Torvalds * | | 767|___________________| t | 12011da177e4SLinus Torvalds * 517|____________| 768| | y | 12021da177e4SLinus Torvalds * row 518| | | rx1 | | 12031da177e4SLinus Torvalds * | | 1023|___________________|___| 12041da177e4SLinus Torvalds * | | 12051da177e4SLinus Torvalds * | tx | 12061da177e4SLinus Torvalds * | | 12071da177e4SLinus Torvalds * | | 12081da177e4SLinus Torvalds * 1535|____________| 12091da177e4SLinus Torvalds * 1536| | 12101da177e4SLinus Torvalds * | rx1 | 12111da177e4SLinus Torvalds * 2047|____________| 12121da177e4SLinus Torvalds * 12131da177e4SLinus Torvalds */ 12141da177e4SLinus Torvalds 12151da177e4SLinus Torvalds /* total 4096 connections */ 12161da177e4SLinus Torvalds he_dev->vcibits = CONFIG_DEFAULT_VCIBITS; 12171da177e4SLinus Torvalds he_dev->vpibits = CONFIG_DEFAULT_VPIBITS; 12181da177e4SLinus Torvalds 12191da177e4SLinus Torvalds if (nvpibits != -1 && nvcibits != -1 && nvpibits+nvcibits != HE_MAXCIDBITS) { 12201da177e4SLinus Torvalds hprintk("nvpibits + nvcibits != %d\n", HE_MAXCIDBITS); 12211da177e4SLinus Torvalds return -ENODEV; 12221da177e4SLinus Torvalds } 12231da177e4SLinus Torvalds 12241da177e4SLinus Torvalds if (nvpibits != -1) { 12251da177e4SLinus Torvalds he_dev->vpibits = nvpibits; 12261da177e4SLinus Torvalds he_dev->vcibits = HE_MAXCIDBITS - nvpibits; 12271da177e4SLinus Torvalds } 12281da177e4SLinus Torvalds 12291da177e4SLinus Torvalds if (nvcibits != -1) { 12301da177e4SLinus Torvalds he_dev->vcibits = nvcibits; 12311da177e4SLinus Torvalds he_dev->vpibits = HE_MAXCIDBITS - nvcibits; 12321da177e4SLinus Torvalds } 12331da177e4SLinus Torvalds 12341da177e4SLinus Torvalds 12351da177e4SLinus Torvalds if (he_is622(he_dev)) { 12361da177e4SLinus Torvalds he_dev->cells_per_row = 40; 12371da177e4SLinus Torvalds he_dev->bytes_per_row = 2048; 12381da177e4SLinus Torvalds he_dev->r0_numrows = 256; 12391da177e4SLinus Torvalds he_dev->tx_numrows = 512; 12401da177e4SLinus Torvalds he_dev->r1_numrows = 256; 12411da177e4SLinus Torvalds he_dev->r0_startrow = 0; 12421da177e4SLinus Torvalds he_dev->tx_startrow = 256; 12431da177e4SLinus Torvalds he_dev->r1_startrow = 768; 12441da177e4SLinus Torvalds } else { 12451da177e4SLinus Torvalds he_dev->cells_per_row = 20; 12461da177e4SLinus Torvalds he_dev->bytes_per_row = 1024; 12471da177e4SLinus Torvalds he_dev->r0_numrows = 512; 12481da177e4SLinus Torvalds he_dev->tx_numrows = 1018; 12491da177e4SLinus Torvalds he_dev->r1_numrows = 512; 12501da177e4SLinus Torvalds he_dev->r0_startrow = 6; 12511da177e4SLinus Torvalds he_dev->tx_startrow = 518; 12521da177e4SLinus Torvalds he_dev->r1_startrow = 1536; 12531da177e4SLinus Torvalds } 12541da177e4SLinus Torvalds 12551da177e4SLinus Torvalds he_dev->cells_per_lbuf = 4; 12561da177e4SLinus Torvalds he_dev->buffer_limit = 4; 12571da177e4SLinus Torvalds he_dev->r0_numbuffs = he_dev->r0_numrows * 12581da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12591da177e4SLinus Torvalds if (he_dev->r0_numbuffs > 2560) 12601da177e4SLinus Torvalds he_dev->r0_numbuffs = 2560; 12611da177e4SLinus Torvalds 12621da177e4SLinus Torvalds he_dev->r1_numbuffs = he_dev->r1_numrows * 12631da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12641da177e4SLinus Torvalds if (he_dev->r1_numbuffs > 2560) 12651da177e4SLinus Torvalds he_dev->r1_numbuffs = 2560; 12661da177e4SLinus Torvalds 12671da177e4SLinus Torvalds he_dev->tx_numbuffs = he_dev->tx_numrows * 12681da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12691da177e4SLinus Torvalds if (he_dev->tx_numbuffs > 5120) 12701da177e4SLinus Torvalds he_dev->tx_numbuffs = 5120; 12711da177e4SLinus Torvalds 12721da177e4SLinus Torvalds /* 5.1.2 configure hardware dependent registers */ 12731da177e4SLinus Torvalds 12741da177e4SLinus Torvalds he_writel(he_dev, 12751da177e4SLinus Torvalds SLICE_X(0x2) | ARB_RNUM_MAX(0xf) | TH_PRTY(0x3) | 12761da177e4SLinus Torvalds RH_PRTY(0x3) | TL_PRTY(0x2) | RL_PRTY(0x1) | 12771da177e4SLinus Torvalds (he_is622(he_dev) ? BUS_MULTI(0x28) : BUS_MULTI(0x46)) | 12781da177e4SLinus Torvalds (he_is622(he_dev) ? NET_PREF(0x50) : NET_PREF(0x8c)), 12791da177e4SLinus Torvalds LBARB); 12801da177e4SLinus Torvalds 12811da177e4SLinus Torvalds he_writel(he_dev, BANK_ON | 12821da177e4SLinus Torvalds (he_is622(he_dev) ? (REF_RATE(0x384) | WIDE_DATA) : REF_RATE(0x150)), 12831da177e4SLinus Torvalds SDRAMCON); 12841da177e4SLinus Torvalds 12851da177e4SLinus Torvalds he_writel(he_dev, 12861da177e4SLinus Torvalds (he_is622(he_dev) ? RM_BANK_WAIT(1) : RM_BANK_WAIT(0)) | 12871da177e4SLinus Torvalds RM_RW_WAIT(1), RCMCONFIG); 12881da177e4SLinus Torvalds he_writel(he_dev, 12891da177e4SLinus Torvalds (he_is622(he_dev) ? TM_BANK_WAIT(2) : TM_BANK_WAIT(1)) | 12901da177e4SLinus Torvalds TM_RW_WAIT(1), TCMCONFIG); 12911da177e4SLinus Torvalds 12921da177e4SLinus Torvalds he_writel(he_dev, he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD, LB_CONFIG); 12931da177e4SLinus Torvalds 12941da177e4SLinus Torvalds he_writel(he_dev, 12951da177e4SLinus Torvalds (he_is622(he_dev) ? UT_RD_DELAY(8) : UT_RD_DELAY(0)) | 12961da177e4SLinus Torvalds (he_is622(he_dev) ? RC_UT_MODE(0) : RC_UT_MODE(1)) | 12971da177e4SLinus Torvalds RX_VALVP(he_dev->vpibits) | 12981da177e4SLinus Torvalds RX_VALVC(he_dev->vcibits), RC_CONFIG); 12991da177e4SLinus Torvalds 13001da177e4SLinus Torvalds he_writel(he_dev, DRF_THRESH(0x20) | 13011da177e4SLinus Torvalds (he_is622(he_dev) ? TX_UT_MODE(0) : TX_UT_MODE(1)) | 13021da177e4SLinus Torvalds TX_VCI_MASK(he_dev->vcibits) | 13031da177e4SLinus Torvalds LBFREE_CNT(he_dev->tx_numbuffs), TX_CONFIG); 13041da177e4SLinus Torvalds 13051da177e4SLinus Torvalds he_writel(he_dev, 0x0, TXAAL5_PROTO); 13061da177e4SLinus Torvalds 13071da177e4SLinus Torvalds he_writel(he_dev, PHY_INT_ENB | 13081da177e4SLinus Torvalds (he_is622(he_dev) ? PTMR_PRE(67 - 1) : PTMR_PRE(50 - 1)), 13091da177e4SLinus Torvalds RH_CONFIG); 13101da177e4SLinus Torvalds 13111da177e4SLinus Torvalds /* 5.1.3 initialize connection memory */ 13121da177e4SLinus Torvalds 13131da177e4SLinus Torvalds for (i = 0; i < TCM_MEM_SIZE; ++i) 13141da177e4SLinus Torvalds he_writel_tcm(he_dev, 0, i); 13151da177e4SLinus Torvalds 13161da177e4SLinus Torvalds for (i = 0; i < RCM_MEM_SIZE; ++i) 13171da177e4SLinus Torvalds he_writel_rcm(he_dev, 0, i); 13181da177e4SLinus Torvalds 13191da177e4SLinus Torvalds /* 13201da177e4SLinus Torvalds * transmit connection memory map 13211da177e4SLinus Torvalds * 13221da177e4SLinus Torvalds * tx memory 13231da177e4SLinus Torvalds * 0x0 ___________________ 13241da177e4SLinus Torvalds * | | 13251da177e4SLinus Torvalds * | | 13261da177e4SLinus Torvalds * | TSRa | 13271da177e4SLinus Torvalds * | | 13281da177e4SLinus Torvalds * | | 13291da177e4SLinus Torvalds * 0x8000|___________________| 13301da177e4SLinus Torvalds * | | 13311da177e4SLinus Torvalds * | TSRb | 13321da177e4SLinus Torvalds * 0xc000|___________________| 13331da177e4SLinus Torvalds * | | 13341da177e4SLinus Torvalds * | TSRc | 13351da177e4SLinus Torvalds * 0xe000|___________________| 13361da177e4SLinus Torvalds * | TSRd | 13371da177e4SLinus Torvalds * 0xf000|___________________| 13381da177e4SLinus Torvalds * | tmABR | 13391da177e4SLinus Torvalds * 0x10000|___________________| 13401da177e4SLinus Torvalds * | | 13411da177e4SLinus Torvalds * | tmTPD | 13421da177e4SLinus Torvalds * |___________________| 13431da177e4SLinus Torvalds * | | 13441da177e4SLinus Torvalds * .... 13451da177e4SLinus Torvalds * 0x1ffff|___________________| 13461da177e4SLinus Torvalds * 13471da177e4SLinus Torvalds * 13481da177e4SLinus Torvalds */ 13491da177e4SLinus Torvalds 13501da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRB, TSRB_BA); 13511da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRC, TSRC_BA); 13521da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRD, TSRD_BA); 13531da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TMABR, TMABR_BA); 13541da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TPDBA, TPD_BA); 13551da177e4SLinus Torvalds 13561da177e4SLinus Torvalds 13571da177e4SLinus Torvalds /* 13581da177e4SLinus Torvalds * receive connection memory map 13591da177e4SLinus Torvalds * 13601da177e4SLinus Torvalds * 0x0 ___________________ 13611da177e4SLinus Torvalds * | | 13621da177e4SLinus Torvalds * | | 13631da177e4SLinus Torvalds * | RSRa | 13641da177e4SLinus Torvalds * | | 13651da177e4SLinus Torvalds * | | 13661da177e4SLinus Torvalds * 0x8000|___________________| 13671da177e4SLinus Torvalds * | | 13681da177e4SLinus Torvalds * | rx0/1 | 13691da177e4SLinus Torvalds * | LBM | link lists of local 13701da177e4SLinus Torvalds * | tx | buffer memory 13711da177e4SLinus Torvalds * | | 13721da177e4SLinus Torvalds * 0xd000|___________________| 13731da177e4SLinus Torvalds * | | 13741da177e4SLinus Torvalds * | rmABR | 13751da177e4SLinus Torvalds * 0xe000|___________________| 13761da177e4SLinus Torvalds * | | 13771da177e4SLinus Torvalds * | RSRb | 13781da177e4SLinus Torvalds * |___________________| 13791da177e4SLinus Torvalds * | | 13801da177e4SLinus Torvalds * .... 13811da177e4SLinus Torvalds * 0xffff|___________________| 13821da177e4SLinus Torvalds */ 13831da177e4SLinus Torvalds 13841da177e4SLinus Torvalds he_writel(he_dev, 0x08000, RCMLBM_BA); 13851da177e4SLinus Torvalds he_writel(he_dev, 0x0e000, RCMRSRB_BA); 13861da177e4SLinus Torvalds he_writel(he_dev, 0x0d800, RCMABR_BA); 13871da177e4SLinus Torvalds 13881da177e4SLinus Torvalds /* 5.1.4 initialize local buffer free pools linked lists */ 13891da177e4SLinus Torvalds 13901da177e4SLinus Torvalds he_init_rx_lbfp0(he_dev); 13911da177e4SLinus Torvalds he_init_rx_lbfp1(he_dev); 13921da177e4SLinus Torvalds 13931da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_H); 13941da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_T); 13951da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_H2); 13961da177e4SLinus Torvalds 13971da177e4SLinus Torvalds he_writel(he_dev, 512, RXTHRSH); /* 10% of r0+r1 buffers */ 13981da177e4SLinus Torvalds he_writel(he_dev, 256, LITHRSH); /* 5% of r0+r1 buffers */ 13991da177e4SLinus Torvalds 14001da177e4SLinus Torvalds he_init_tx_lbfp(he_dev); 14011da177e4SLinus Torvalds 14021da177e4SLinus Torvalds he_writel(he_dev, he_is622(he_dev) ? 0x104780 : 0x800, UBUFF_BA); 14031da177e4SLinus Torvalds 14041da177e4SLinus Torvalds /* 5.1.5 initialize intermediate receive queues */ 14051da177e4SLinus Torvalds 14061da177e4SLinus Torvalds if (he_is622(he_dev)) { 14071da177e4SLinus Torvalds he_writel(he_dev, 0x000f, G0_INMQ_S); 14081da177e4SLinus Torvalds he_writel(he_dev, 0x200f, G0_INMQ_L); 14091da177e4SLinus Torvalds 14101da177e4SLinus Torvalds he_writel(he_dev, 0x001f, G1_INMQ_S); 14111da177e4SLinus Torvalds he_writel(he_dev, 0x201f, G1_INMQ_L); 14121da177e4SLinus Torvalds 14131da177e4SLinus Torvalds he_writel(he_dev, 0x002f, G2_INMQ_S); 14141da177e4SLinus Torvalds he_writel(he_dev, 0x202f, G2_INMQ_L); 14151da177e4SLinus Torvalds 14161da177e4SLinus Torvalds he_writel(he_dev, 0x003f, G3_INMQ_S); 14171da177e4SLinus Torvalds he_writel(he_dev, 0x203f, G3_INMQ_L); 14181da177e4SLinus Torvalds 14191da177e4SLinus Torvalds he_writel(he_dev, 0x004f, G4_INMQ_S); 14201da177e4SLinus Torvalds he_writel(he_dev, 0x204f, G4_INMQ_L); 14211da177e4SLinus Torvalds 14221da177e4SLinus Torvalds he_writel(he_dev, 0x005f, G5_INMQ_S); 14231da177e4SLinus Torvalds he_writel(he_dev, 0x205f, G5_INMQ_L); 14241da177e4SLinus Torvalds 14251da177e4SLinus Torvalds he_writel(he_dev, 0x006f, G6_INMQ_S); 14261da177e4SLinus Torvalds he_writel(he_dev, 0x206f, G6_INMQ_L); 14271da177e4SLinus Torvalds 14281da177e4SLinus Torvalds he_writel(he_dev, 0x007f, G7_INMQ_S); 14291da177e4SLinus Torvalds he_writel(he_dev, 0x207f, G7_INMQ_L); 14301da177e4SLinus Torvalds } else { 14311da177e4SLinus Torvalds he_writel(he_dev, 0x0000, G0_INMQ_S); 14321da177e4SLinus Torvalds he_writel(he_dev, 0x0008, G0_INMQ_L); 14331da177e4SLinus Torvalds 14341da177e4SLinus Torvalds he_writel(he_dev, 0x0001, G1_INMQ_S); 14351da177e4SLinus Torvalds he_writel(he_dev, 0x0009, G1_INMQ_L); 14361da177e4SLinus Torvalds 14371da177e4SLinus Torvalds he_writel(he_dev, 0x0002, G2_INMQ_S); 14381da177e4SLinus Torvalds he_writel(he_dev, 0x000a, G2_INMQ_L); 14391da177e4SLinus Torvalds 14401da177e4SLinus Torvalds he_writel(he_dev, 0x0003, G3_INMQ_S); 14411da177e4SLinus Torvalds he_writel(he_dev, 0x000b, G3_INMQ_L); 14421da177e4SLinus Torvalds 14431da177e4SLinus Torvalds he_writel(he_dev, 0x0004, G4_INMQ_S); 14441da177e4SLinus Torvalds he_writel(he_dev, 0x000c, G4_INMQ_L); 14451da177e4SLinus Torvalds 14461da177e4SLinus Torvalds he_writel(he_dev, 0x0005, G5_INMQ_S); 14471da177e4SLinus Torvalds he_writel(he_dev, 0x000d, G5_INMQ_L); 14481da177e4SLinus Torvalds 14491da177e4SLinus Torvalds he_writel(he_dev, 0x0006, G6_INMQ_S); 14501da177e4SLinus Torvalds he_writel(he_dev, 0x000e, G6_INMQ_L); 14511da177e4SLinus Torvalds 14521da177e4SLinus Torvalds he_writel(he_dev, 0x0007, G7_INMQ_S); 14531da177e4SLinus Torvalds he_writel(he_dev, 0x000f, G7_INMQ_L); 14541da177e4SLinus Torvalds } 14551da177e4SLinus Torvalds 14561da177e4SLinus Torvalds /* 5.1.6 application tunable parameters */ 14571da177e4SLinus Torvalds 14581da177e4SLinus Torvalds he_writel(he_dev, 0x0, MCC); 14591da177e4SLinus Torvalds he_writel(he_dev, 0x0, OEC); 14601da177e4SLinus Torvalds he_writel(he_dev, 0x0, DCC); 14611da177e4SLinus Torvalds he_writel(he_dev, 0x0, CEC); 14621da177e4SLinus Torvalds 14631da177e4SLinus Torvalds /* 5.1.7 cs block initialization */ 14641da177e4SLinus Torvalds 14651da177e4SLinus Torvalds he_init_cs_block(he_dev); 14661da177e4SLinus Torvalds 14671da177e4SLinus Torvalds /* 5.1.8 cs block connection memory initialization */ 14681da177e4SLinus Torvalds 14691da177e4SLinus Torvalds if (he_init_cs_block_rcm(he_dev) < 0) 14701da177e4SLinus Torvalds return -ENOMEM; 14711da177e4SLinus Torvalds 14721da177e4SLinus Torvalds /* 5.1.10 initialize host structures */ 14731da177e4SLinus Torvalds 14741da177e4SLinus Torvalds he_init_tpdrq(he_dev); 14751da177e4SLinus Torvalds 14761da177e4SLinus Torvalds he_dev->tpd_pool = pci_pool_create("tpd", he_dev->pci_dev, 14771da177e4SLinus Torvalds sizeof(struct he_tpd), TPD_ALIGNMENT, 0); 14781da177e4SLinus Torvalds if (he_dev->tpd_pool == NULL) { 14791da177e4SLinus Torvalds hprintk("unable to create tpd pci_pool\n"); 14801da177e4SLinus Torvalds return -ENOMEM; 14811da177e4SLinus Torvalds } 14821da177e4SLinus Torvalds 14831da177e4SLinus Torvalds INIT_LIST_HEAD(&he_dev->outstanding_tpds); 14841da177e4SLinus Torvalds 14851da177e4SLinus Torvalds if (he_init_group(he_dev, 0) != 0) 14861da177e4SLinus Torvalds return -ENOMEM; 14871da177e4SLinus Torvalds 14881da177e4SLinus Torvalds for (group = 1; group < HE_NUM_GROUPS; ++group) { 14891da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_S + (group * 32)); 14901da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_T + (group * 32)); 14911da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_QI + (group * 32)); 14921da177e4SLinus Torvalds he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 14931da177e4SLinus Torvalds G0_RBPS_BS + (group * 32)); 14941da177e4SLinus Torvalds 14951da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_S + (group * 32)); 14961da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_T + (group * 32)); 14971da177e4SLinus Torvalds he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 14981da177e4SLinus Torvalds G0_RBPL_QI + (group * 32)); 14991da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_BS + (group * 32)); 15001da177e4SLinus Torvalds 15011da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_ST + (group * 16)); 15021da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_H + (group * 16)); 15031da177e4SLinus Torvalds he_writel(he_dev, RBRQ_THRESH(0x1) | RBRQ_SIZE(0x0), 15041da177e4SLinus Torvalds G0_RBRQ_Q + (group * 16)); 15051da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_I + (group * 16)); 15061da177e4SLinus Torvalds 15071da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_B_T + (group * 16)); 15081da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_H + (group * 16)); 15091da177e4SLinus Torvalds he_writel(he_dev, TBRQ_THRESH(0x1), 15101da177e4SLinus Torvalds G0_TBRQ_THRESH + (group * 16)); 15111da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_S + (group * 16)); 15121da177e4SLinus Torvalds } 15131da177e4SLinus Torvalds 15141da177e4SLinus Torvalds /* host status page */ 15151da177e4SLinus Torvalds 15161da177e4SLinus Torvalds he_dev->hsp = pci_alloc_consistent(he_dev->pci_dev, 15171da177e4SLinus Torvalds sizeof(struct he_hsp), &he_dev->hsp_phys); 15181da177e4SLinus Torvalds if (he_dev->hsp == NULL) { 15191da177e4SLinus Torvalds hprintk("failed to allocate host status page\n"); 15201da177e4SLinus Torvalds return -ENOMEM; 15211da177e4SLinus Torvalds } 15221da177e4SLinus Torvalds memset(he_dev->hsp, 0, sizeof(struct he_hsp)); 15231da177e4SLinus Torvalds he_writel(he_dev, he_dev->hsp_phys, HSP_BA); 15241da177e4SLinus Torvalds 15251da177e4SLinus Torvalds /* initialize framer */ 15261da177e4SLinus Torvalds 15271da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 1528059e3779SChas Williams if (he_isMM(he_dev)) 15291da177e4SLinus Torvalds suni_init(he_dev->atm_dev); 15301da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->start) 15311da177e4SLinus Torvalds he_dev->atm_dev->phy->start(he_dev->atm_dev); 15321da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 15331da177e4SLinus Torvalds 15341da177e4SLinus Torvalds if (sdh) { 15351da177e4SLinus Torvalds /* this really should be in suni.c but for now... */ 15361da177e4SLinus Torvalds int val; 15371da177e4SLinus Torvalds 15381da177e4SLinus Torvalds val = he_phy_get(he_dev->atm_dev, SUNI_TPOP_APM); 15391da177e4SLinus Torvalds val = (val & ~SUNI_TPOP_APM_S) | (SUNI_TPOP_S_SDH << SUNI_TPOP_APM_S_SHIFT); 15401da177e4SLinus Torvalds he_phy_put(he_dev->atm_dev, val, SUNI_TPOP_APM); 154165c3e471SChas Williams he_phy_put(he_dev->atm_dev, SUNI_TACP_IUCHP_CLP, SUNI_TACP_IUCHP); 15421da177e4SLinus Torvalds } 15431da177e4SLinus Torvalds 15441da177e4SLinus Torvalds /* 5.1.12 enable transmit and receive */ 15451da177e4SLinus Torvalds 15461da177e4SLinus Torvalds reg = he_readl_mbox(he_dev, CS_ERCTL0); 15471da177e4SLinus Torvalds reg |= TX_ENABLE|ER_ENABLE; 15481da177e4SLinus Torvalds he_writel_mbox(he_dev, reg, CS_ERCTL0); 15491da177e4SLinus Torvalds 15501da177e4SLinus Torvalds reg = he_readl(he_dev, RC_CONFIG); 15511da177e4SLinus Torvalds reg |= RX_ENABLE; 15521da177e4SLinus Torvalds he_writel(he_dev, reg, RC_CONFIG); 15531da177e4SLinus Torvalds 15541da177e4SLinus Torvalds for (i = 0; i < HE_NUM_CS_STPER; ++i) { 15551da177e4SLinus Torvalds he_dev->cs_stper[i].inuse = 0; 15561da177e4SLinus Torvalds he_dev->cs_stper[i].pcr = -1; 15571da177e4SLinus Torvalds } 15581da177e4SLinus Torvalds he_dev->total_bw = 0; 15591da177e4SLinus Torvalds 15601da177e4SLinus Torvalds 15611da177e4SLinus Torvalds /* atm linux initialization */ 15621da177e4SLinus Torvalds 15631da177e4SLinus Torvalds he_dev->atm_dev->ci_range.vpi_bits = he_dev->vpibits; 15641da177e4SLinus Torvalds he_dev->atm_dev->ci_range.vci_bits = he_dev->vcibits; 15651da177e4SLinus Torvalds 15661da177e4SLinus Torvalds he_dev->irq_peak = 0; 15671da177e4SLinus Torvalds he_dev->rbrq_peak = 0; 15681da177e4SLinus Torvalds he_dev->rbpl_peak = 0; 15691da177e4SLinus Torvalds he_dev->tbrq_peak = 0; 15701da177e4SLinus Torvalds 15711da177e4SLinus Torvalds HPRINTK("hell bent for leather!\n"); 15721da177e4SLinus Torvalds 15731da177e4SLinus Torvalds return 0; 15741da177e4SLinus Torvalds } 15751da177e4SLinus Torvalds 15761da177e4SLinus Torvalds static void 15771da177e4SLinus Torvalds he_stop(struct he_dev *he_dev) 15781da177e4SLinus Torvalds { 15791da177e4SLinus Torvalds u16 command; 15801da177e4SLinus Torvalds u32 gen_cntl_0, reg; 15811da177e4SLinus Torvalds struct pci_dev *pci_dev; 15821da177e4SLinus Torvalds 15831da177e4SLinus Torvalds pci_dev = he_dev->pci_dev; 15841da177e4SLinus Torvalds 15851da177e4SLinus Torvalds /* disable interrupts */ 15861da177e4SLinus Torvalds 15871da177e4SLinus Torvalds if (he_dev->membase) { 15881da177e4SLinus Torvalds pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0); 15891da177e4SLinus Torvalds gen_cntl_0 &= ~(INT_PROC_ENBL | INIT_ENB); 15901da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 15911da177e4SLinus Torvalds 15921da177e4SLinus Torvalds tasklet_disable(&he_dev->tasklet); 15931da177e4SLinus Torvalds 15941da177e4SLinus Torvalds /* disable recv and transmit */ 15951da177e4SLinus Torvalds 15961da177e4SLinus Torvalds reg = he_readl_mbox(he_dev, CS_ERCTL0); 15971da177e4SLinus Torvalds reg &= ~(TX_ENABLE|ER_ENABLE); 15981da177e4SLinus Torvalds he_writel_mbox(he_dev, reg, CS_ERCTL0); 15991da177e4SLinus Torvalds 16001da177e4SLinus Torvalds reg = he_readl(he_dev, RC_CONFIG); 16011da177e4SLinus Torvalds reg &= ~(RX_ENABLE); 16021da177e4SLinus Torvalds he_writel(he_dev, reg, RC_CONFIG); 16031da177e4SLinus Torvalds } 16041da177e4SLinus Torvalds 16051da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 16061da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->stop) 16071da177e4SLinus Torvalds he_dev->atm_dev->phy->stop(he_dev->atm_dev); 16081da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 16091da177e4SLinus Torvalds 16101da177e4SLinus Torvalds if (he_dev->irq) 16111da177e4SLinus Torvalds free_irq(he_dev->irq, he_dev); 16121da177e4SLinus Torvalds 16131da177e4SLinus Torvalds if (he_dev->irq_base) 16141da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, (CONFIG_IRQ_SIZE+1) 16151da177e4SLinus Torvalds * sizeof(struct he_irq), he_dev->irq_base, he_dev->irq_phys); 16161da177e4SLinus Torvalds 16171da177e4SLinus Torvalds if (he_dev->hsp) 16181da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, sizeof(struct he_hsp), 16191da177e4SLinus Torvalds he_dev->hsp, he_dev->hsp_phys); 16201da177e4SLinus Torvalds 16211da177e4SLinus Torvalds if (he_dev->rbpl_base) { 16227d1f8db4SJorge Boncompte int i; 16237d1f8db4SJorge Boncompte 16241da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPL_SIZE; ++i) { 16251da177e4SLinus Torvalds void *cpuaddr = he_dev->rbpl_virt[i].virt; 16261da177e4SLinus Torvalds dma_addr_t dma_handle = he_dev->rbpl_base[i].phys; 16271da177e4SLinus Torvalds 16281da177e4SLinus Torvalds pci_pool_free(he_dev->rbpl_pool, cpuaddr, dma_handle); 16291da177e4SLinus Torvalds } 16301da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBPL_SIZE 16311da177e4SLinus Torvalds * sizeof(struct he_rbp), he_dev->rbpl_base, he_dev->rbpl_phys); 16321da177e4SLinus Torvalds } 16331da177e4SLinus Torvalds 16341da177e4SLinus Torvalds if (he_dev->rbpl_pool) 16351da177e4SLinus Torvalds pci_pool_destroy(he_dev->rbpl_pool); 16361da177e4SLinus Torvalds 16371da177e4SLinus Torvalds if (he_dev->rbps_base) { 16387d1f8db4SJorge Boncompte int i; 16397d1f8db4SJorge Boncompte 16401da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPS_SIZE; ++i) { 16411da177e4SLinus Torvalds void *cpuaddr = he_dev->rbps_virt[i].virt; 16421da177e4SLinus Torvalds dma_addr_t dma_handle = he_dev->rbps_base[i].phys; 16431da177e4SLinus Torvalds 16441da177e4SLinus Torvalds pci_pool_free(he_dev->rbps_pool, cpuaddr, dma_handle); 16451da177e4SLinus Torvalds } 16461da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBPS_SIZE 16471da177e4SLinus Torvalds * sizeof(struct he_rbp), he_dev->rbps_base, he_dev->rbps_phys); 16481da177e4SLinus Torvalds } 16491da177e4SLinus Torvalds 16501da177e4SLinus Torvalds if (he_dev->rbps_pool) 16511da177e4SLinus Torvalds pci_pool_destroy(he_dev->rbps_pool); 16521da177e4SLinus Torvalds 16531da177e4SLinus Torvalds if (he_dev->rbrq_base) 16541da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), 16551da177e4SLinus Torvalds he_dev->rbrq_base, he_dev->rbrq_phys); 16561da177e4SLinus Torvalds 16571da177e4SLinus Torvalds if (he_dev->tbrq_base) 16581da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), 16591da177e4SLinus Torvalds he_dev->tbrq_base, he_dev->tbrq_phys); 16601da177e4SLinus Torvalds 16611da177e4SLinus Torvalds if (he_dev->tpdrq_base) 16621da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), 16631da177e4SLinus Torvalds he_dev->tpdrq_base, he_dev->tpdrq_phys); 16641da177e4SLinus Torvalds 16651da177e4SLinus Torvalds if (he_dev->tpd_pool) 16661da177e4SLinus Torvalds pci_pool_destroy(he_dev->tpd_pool); 16671da177e4SLinus Torvalds 16681da177e4SLinus Torvalds if (he_dev->pci_dev) { 16691da177e4SLinus Torvalds pci_read_config_word(he_dev->pci_dev, PCI_COMMAND, &command); 16701da177e4SLinus Torvalds command &= ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); 16711da177e4SLinus Torvalds pci_write_config_word(he_dev->pci_dev, PCI_COMMAND, command); 16721da177e4SLinus Torvalds } 16731da177e4SLinus Torvalds 16741da177e4SLinus Torvalds if (he_dev->membase) 16751da177e4SLinus Torvalds iounmap(he_dev->membase); 16761da177e4SLinus Torvalds } 16771da177e4SLinus Torvalds 16781da177e4SLinus Torvalds static struct he_tpd * 16791da177e4SLinus Torvalds __alloc_tpd(struct he_dev *he_dev) 16801da177e4SLinus Torvalds { 16811da177e4SLinus Torvalds struct he_tpd *tpd; 16821da177e4SLinus Torvalds dma_addr_t dma_handle; 16831da177e4SLinus Torvalds 1684441e143eSChristoph Lameter tpd = pci_pool_alloc(he_dev->tpd_pool, GFP_ATOMIC|GFP_DMA, &dma_handle); 16851da177e4SLinus Torvalds if (tpd == NULL) 16861da177e4SLinus Torvalds return NULL; 16871da177e4SLinus Torvalds 16881da177e4SLinus Torvalds tpd->status = TPD_ADDR(dma_handle); 16891da177e4SLinus Torvalds tpd->reserved = 0; 16901da177e4SLinus Torvalds tpd->iovec[0].addr = 0; tpd->iovec[0].len = 0; 16911da177e4SLinus Torvalds tpd->iovec[1].addr = 0; tpd->iovec[1].len = 0; 16921da177e4SLinus Torvalds tpd->iovec[2].addr = 0; tpd->iovec[2].len = 0; 16931da177e4SLinus Torvalds 16941da177e4SLinus Torvalds return tpd; 16951da177e4SLinus Torvalds } 16961da177e4SLinus Torvalds 16971da177e4SLinus Torvalds #define AAL5_LEN(buf,len) \ 16981da177e4SLinus Torvalds ((((unsigned char *)(buf))[(len)-6] << 8) | \ 16991da177e4SLinus Torvalds (((unsigned char *)(buf))[(len)-5])) 17001da177e4SLinus Torvalds 17011da177e4SLinus Torvalds /* 2.10.1.2 receive 17021da177e4SLinus Torvalds * 17031da177e4SLinus Torvalds * aal5 packets can optionally return the tcp checksum in the lower 17041da177e4SLinus Torvalds * 16 bits of the crc (RSR0_TCP_CKSUM) 17051da177e4SLinus Torvalds */ 17061da177e4SLinus Torvalds 17071da177e4SLinus Torvalds #define TCP_CKSUM(buf,len) \ 17081da177e4SLinus Torvalds ((((unsigned char *)(buf))[(len)-2] << 8) | \ 17091da177e4SLinus Torvalds (((unsigned char *)(buf))[(len-1)])) 17101da177e4SLinus Torvalds 17111da177e4SLinus Torvalds static int 17121da177e4SLinus Torvalds he_service_rbrq(struct he_dev *he_dev, int group) 17131da177e4SLinus Torvalds { 17141da177e4SLinus Torvalds struct he_rbrq *rbrq_tail = (struct he_rbrq *) 17151da177e4SLinus Torvalds ((unsigned long)he_dev->rbrq_base | 17161da177e4SLinus Torvalds he_dev->hsp->group[group].rbrq_tail); 17171da177e4SLinus Torvalds struct he_rbp *rbp = NULL; 17181da177e4SLinus Torvalds unsigned cid, lastcid = -1; 17191da177e4SLinus Torvalds unsigned buf_len = 0; 17201da177e4SLinus Torvalds struct sk_buff *skb; 17211da177e4SLinus Torvalds struct atm_vcc *vcc = NULL; 17221da177e4SLinus Torvalds struct he_vcc *he_vcc; 17231da177e4SLinus Torvalds struct he_iovec *iov; 17241da177e4SLinus Torvalds int pdus_assembled = 0; 17251da177e4SLinus Torvalds int updated = 0; 17261da177e4SLinus Torvalds 17271da177e4SLinus Torvalds read_lock(&vcc_sklist_lock); 17281da177e4SLinus Torvalds while (he_dev->rbrq_head != rbrq_tail) { 17291da177e4SLinus Torvalds ++updated; 17301da177e4SLinus Torvalds 17311da177e4SLinus Torvalds HPRINTK("%p rbrq%d 0x%x len=%d cid=0x%x %s%s%s%s%s%s\n", 17321da177e4SLinus Torvalds he_dev->rbrq_head, group, 17331da177e4SLinus Torvalds RBRQ_ADDR(he_dev->rbrq_head), 17341da177e4SLinus Torvalds RBRQ_BUFLEN(he_dev->rbrq_head), 17351da177e4SLinus Torvalds RBRQ_CID(he_dev->rbrq_head), 17361da177e4SLinus Torvalds RBRQ_CRC_ERR(he_dev->rbrq_head) ? " CRC_ERR" : "", 17371da177e4SLinus Torvalds RBRQ_LEN_ERR(he_dev->rbrq_head) ? " LEN_ERR" : "", 17381da177e4SLinus Torvalds RBRQ_END_PDU(he_dev->rbrq_head) ? " END_PDU" : "", 17391da177e4SLinus Torvalds RBRQ_AAL5_PROT(he_dev->rbrq_head) ? " AAL5_PROT" : "", 17401da177e4SLinus Torvalds RBRQ_CON_CLOSED(he_dev->rbrq_head) ? " CON_CLOSED" : "", 17411da177e4SLinus Torvalds RBRQ_HBUF_ERR(he_dev->rbrq_head) ? " HBUF_ERR" : ""); 17421da177e4SLinus Torvalds 17431da177e4SLinus Torvalds if (RBRQ_ADDR(he_dev->rbrq_head) & RBP_SMALLBUF) 17441da177e4SLinus Torvalds rbp = &he_dev->rbps_base[RBP_INDEX(RBRQ_ADDR(he_dev->rbrq_head))]; 17451da177e4SLinus Torvalds else 17461da177e4SLinus Torvalds rbp = &he_dev->rbpl_base[RBP_INDEX(RBRQ_ADDR(he_dev->rbrq_head))]; 17471da177e4SLinus Torvalds 17481da177e4SLinus Torvalds buf_len = RBRQ_BUFLEN(he_dev->rbrq_head) * 4; 17491da177e4SLinus Torvalds cid = RBRQ_CID(he_dev->rbrq_head); 17501da177e4SLinus Torvalds 17511da177e4SLinus Torvalds if (cid != lastcid) 17521da177e4SLinus Torvalds vcc = __find_vcc(he_dev, cid); 17531da177e4SLinus Torvalds lastcid = cid; 17541da177e4SLinus Torvalds 17551da177e4SLinus Torvalds if (vcc == NULL) { 17561da177e4SLinus Torvalds hprintk("vcc == NULL (cid 0x%x)\n", cid); 17571da177e4SLinus Torvalds if (!RBRQ_HBUF_ERR(he_dev->rbrq_head)) 17581da177e4SLinus Torvalds rbp->status &= ~RBP_LOANED; 17591da177e4SLinus Torvalds 17601da177e4SLinus Torvalds goto next_rbrq_entry; 17611da177e4SLinus Torvalds } 17621da177e4SLinus Torvalds 17631da177e4SLinus Torvalds he_vcc = HE_VCC(vcc); 17641da177e4SLinus Torvalds if (he_vcc == NULL) { 17651da177e4SLinus Torvalds hprintk("he_vcc == NULL (cid 0x%x)\n", cid); 17661da177e4SLinus Torvalds if (!RBRQ_HBUF_ERR(he_dev->rbrq_head)) 17671da177e4SLinus Torvalds rbp->status &= ~RBP_LOANED; 17681da177e4SLinus Torvalds goto next_rbrq_entry; 17691da177e4SLinus Torvalds } 17701da177e4SLinus Torvalds 17711da177e4SLinus Torvalds if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) { 17721da177e4SLinus Torvalds hprintk("HBUF_ERR! (cid 0x%x)\n", cid); 17731da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 17741da177e4SLinus Torvalds goto return_host_buffers; 17751da177e4SLinus Torvalds } 17761da177e4SLinus Torvalds 17771da177e4SLinus Torvalds he_vcc->iov_tail->iov_base = RBRQ_ADDR(he_dev->rbrq_head); 17781da177e4SLinus Torvalds he_vcc->iov_tail->iov_len = buf_len; 17791da177e4SLinus Torvalds he_vcc->pdu_len += buf_len; 17801da177e4SLinus Torvalds ++he_vcc->iov_tail; 17811da177e4SLinus Torvalds 17821da177e4SLinus Torvalds if (RBRQ_CON_CLOSED(he_dev->rbrq_head)) { 17831da177e4SLinus Torvalds lastcid = -1; 17841da177e4SLinus Torvalds HPRINTK("wake_up rx_waitq (cid 0x%x)\n", cid); 17851da177e4SLinus Torvalds wake_up(&he_vcc->rx_waitq); 17861da177e4SLinus Torvalds goto return_host_buffers; 17871da177e4SLinus Torvalds } 17881da177e4SLinus Torvalds 17891da177e4SLinus Torvalds #ifdef notdef 17901da177e4SLinus Torvalds if ((he_vcc->iov_tail - he_vcc->iov_head) > HE_MAXIOV) { 17911da177e4SLinus Torvalds hprintk("iovec full! cid 0x%x\n", cid); 17921da177e4SLinus Torvalds goto return_host_buffers; 17931da177e4SLinus Torvalds } 17941da177e4SLinus Torvalds #endif 17951da177e4SLinus Torvalds if (!RBRQ_END_PDU(he_dev->rbrq_head)) 17961da177e4SLinus Torvalds goto next_rbrq_entry; 17971da177e4SLinus Torvalds 17981da177e4SLinus Torvalds if (RBRQ_LEN_ERR(he_dev->rbrq_head) 17991da177e4SLinus Torvalds || RBRQ_CRC_ERR(he_dev->rbrq_head)) { 18001da177e4SLinus Torvalds HPRINTK("%s%s (%d.%d)\n", 18011da177e4SLinus Torvalds RBRQ_CRC_ERR(he_dev->rbrq_head) 18021da177e4SLinus Torvalds ? "CRC_ERR " : "", 18031da177e4SLinus Torvalds RBRQ_LEN_ERR(he_dev->rbrq_head) 18041da177e4SLinus Torvalds ? "LEN_ERR" : "", 18051da177e4SLinus Torvalds vcc->vpi, vcc->vci); 18061da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 18071da177e4SLinus Torvalds goto return_host_buffers; 18081da177e4SLinus Torvalds } 18091da177e4SLinus Torvalds 18101da177e4SLinus Torvalds skb = atm_alloc_charge(vcc, he_vcc->pdu_len + rx_skb_reserve, 18111da177e4SLinus Torvalds GFP_ATOMIC); 18121da177e4SLinus Torvalds if (!skb) { 18131da177e4SLinus Torvalds HPRINTK("charge failed (%d.%d)\n", vcc->vpi, vcc->vci); 18141da177e4SLinus Torvalds goto return_host_buffers; 18151da177e4SLinus Torvalds } 18161da177e4SLinus Torvalds 18171da177e4SLinus Torvalds if (rx_skb_reserve > 0) 18181da177e4SLinus Torvalds skb_reserve(skb, rx_skb_reserve); 18191da177e4SLinus Torvalds 1820a61bbcf2SPatrick McHardy __net_timestamp(skb); 18211da177e4SLinus Torvalds 18221da177e4SLinus Torvalds for (iov = he_vcc->iov_head; 18231da177e4SLinus Torvalds iov < he_vcc->iov_tail; ++iov) { 18241da177e4SLinus Torvalds if (iov->iov_base & RBP_SMALLBUF) 18251da177e4SLinus Torvalds memcpy(skb_put(skb, iov->iov_len), 18261da177e4SLinus Torvalds he_dev->rbps_virt[RBP_INDEX(iov->iov_base)].virt, iov->iov_len); 18271da177e4SLinus Torvalds else 18281da177e4SLinus Torvalds memcpy(skb_put(skb, iov->iov_len), 18291da177e4SLinus Torvalds he_dev->rbpl_virt[RBP_INDEX(iov->iov_base)].virt, iov->iov_len); 18301da177e4SLinus Torvalds } 18311da177e4SLinus Torvalds 18321da177e4SLinus Torvalds switch (vcc->qos.aal) { 18331da177e4SLinus Torvalds case ATM_AAL0: 18341da177e4SLinus Torvalds /* 2.10.1.5 raw cell receive */ 18351da177e4SLinus Torvalds skb->len = ATM_AAL0_SDU; 183627a884dcSArnaldo Carvalho de Melo skb_set_tail_pointer(skb, skb->len); 18371da177e4SLinus Torvalds break; 18381da177e4SLinus Torvalds case ATM_AAL5: 18391da177e4SLinus Torvalds /* 2.10.1.2 aal5 receive */ 18401da177e4SLinus Torvalds 18411da177e4SLinus Torvalds skb->len = AAL5_LEN(skb->data, he_vcc->pdu_len); 184227a884dcSArnaldo Carvalho de Melo skb_set_tail_pointer(skb, skb->len); 18431da177e4SLinus Torvalds #ifdef USE_CHECKSUM_HW 18441da177e4SLinus Torvalds if (vcc->vpi == 0 && vcc->vci >= ATM_NOT_RSV_VCI) { 184584fa7933SPatrick McHardy skb->ip_summed = CHECKSUM_COMPLETE; 18461da177e4SLinus Torvalds skb->csum = TCP_CKSUM(skb->data, 18471da177e4SLinus Torvalds he_vcc->pdu_len); 18481da177e4SLinus Torvalds } 18491da177e4SLinus Torvalds #endif 18501da177e4SLinus Torvalds break; 18511da177e4SLinus Torvalds } 18521da177e4SLinus Torvalds 18531da177e4SLinus Torvalds #ifdef should_never_happen 18541da177e4SLinus Torvalds if (skb->len > vcc->qos.rxtp.max_sdu) 18551da177e4SLinus Torvalds hprintk("pdu_len (%d) > vcc->qos.rxtp.max_sdu (%d)! cid 0x%x\n", skb->len, vcc->qos.rxtp.max_sdu, cid); 18561da177e4SLinus Torvalds #endif 18571da177e4SLinus Torvalds 18581da177e4SLinus Torvalds #ifdef notdef 18591da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 18601da177e4SLinus Torvalds #endif 18617f81dc00SChas Williams spin_unlock(&he_dev->global_lock); 18621da177e4SLinus Torvalds vcc->push(vcc, skb); 18637f81dc00SChas Williams spin_lock(&he_dev->global_lock); 18641da177e4SLinus Torvalds 18651da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 18661da177e4SLinus Torvalds 18671da177e4SLinus Torvalds return_host_buffers: 18681da177e4SLinus Torvalds ++pdus_assembled; 18691da177e4SLinus Torvalds 18701da177e4SLinus Torvalds for (iov = he_vcc->iov_head; 18711da177e4SLinus Torvalds iov < he_vcc->iov_tail; ++iov) { 18721da177e4SLinus Torvalds if (iov->iov_base & RBP_SMALLBUF) 18731da177e4SLinus Torvalds rbp = &he_dev->rbps_base[RBP_INDEX(iov->iov_base)]; 18741da177e4SLinus Torvalds else 18751da177e4SLinus Torvalds rbp = &he_dev->rbpl_base[RBP_INDEX(iov->iov_base)]; 18761da177e4SLinus Torvalds 18771da177e4SLinus Torvalds rbp->status &= ~RBP_LOANED; 18781da177e4SLinus Torvalds } 18791da177e4SLinus Torvalds 18801da177e4SLinus Torvalds he_vcc->iov_tail = he_vcc->iov_head; 18811da177e4SLinus Torvalds he_vcc->pdu_len = 0; 18821da177e4SLinus Torvalds 18831da177e4SLinus Torvalds next_rbrq_entry: 18841da177e4SLinus Torvalds he_dev->rbrq_head = (struct he_rbrq *) 18851da177e4SLinus Torvalds ((unsigned long) he_dev->rbrq_base | 18861da177e4SLinus Torvalds RBRQ_MASK(++he_dev->rbrq_head)); 18871da177e4SLinus Torvalds 18881da177e4SLinus Torvalds } 18891da177e4SLinus Torvalds read_unlock(&vcc_sklist_lock); 18901da177e4SLinus Torvalds 18911da177e4SLinus Torvalds if (updated) { 18921da177e4SLinus Torvalds if (updated > he_dev->rbrq_peak) 18931da177e4SLinus Torvalds he_dev->rbrq_peak = updated; 18941da177e4SLinus Torvalds 18951da177e4SLinus Torvalds he_writel(he_dev, RBRQ_MASK(he_dev->rbrq_head), 18961da177e4SLinus Torvalds G0_RBRQ_H + (group * 16)); 18971da177e4SLinus Torvalds } 18981da177e4SLinus Torvalds 18991da177e4SLinus Torvalds return pdus_assembled; 19001da177e4SLinus Torvalds } 19011da177e4SLinus Torvalds 19021da177e4SLinus Torvalds static void 19031da177e4SLinus Torvalds he_service_tbrq(struct he_dev *he_dev, int group) 19041da177e4SLinus Torvalds { 19051da177e4SLinus Torvalds struct he_tbrq *tbrq_tail = (struct he_tbrq *) 19061da177e4SLinus Torvalds ((unsigned long)he_dev->tbrq_base | 19071da177e4SLinus Torvalds he_dev->hsp->group[group].tbrq_tail); 19081da177e4SLinus Torvalds struct he_tpd *tpd; 19091da177e4SLinus Torvalds int slot, updated = 0; 19101da177e4SLinus Torvalds struct he_tpd *__tpd; 19111da177e4SLinus Torvalds 19121da177e4SLinus Torvalds /* 2.1.6 transmit buffer return queue */ 19131da177e4SLinus Torvalds 19141da177e4SLinus Torvalds while (he_dev->tbrq_head != tbrq_tail) { 19151da177e4SLinus Torvalds ++updated; 19161da177e4SLinus Torvalds 19171da177e4SLinus Torvalds HPRINTK("tbrq%d 0x%x%s%s\n", 19181da177e4SLinus Torvalds group, 19191da177e4SLinus Torvalds TBRQ_TPD(he_dev->tbrq_head), 19201da177e4SLinus Torvalds TBRQ_EOS(he_dev->tbrq_head) ? " EOS" : "", 19211da177e4SLinus Torvalds TBRQ_MULTIPLE(he_dev->tbrq_head) ? " MULTIPLE" : ""); 19221da177e4SLinus Torvalds tpd = NULL; 19231da177e4SLinus Torvalds list_for_each_entry(__tpd, &he_dev->outstanding_tpds, entry) { 19241da177e4SLinus Torvalds if (TPD_ADDR(__tpd->status) == TBRQ_TPD(he_dev->tbrq_head)) { 19251da177e4SLinus Torvalds tpd = __tpd; 19261da177e4SLinus Torvalds list_del(&__tpd->entry); 19271da177e4SLinus Torvalds break; 19281da177e4SLinus Torvalds } 19291da177e4SLinus Torvalds } 19301da177e4SLinus Torvalds 19311da177e4SLinus Torvalds if (tpd == NULL) { 19321da177e4SLinus Torvalds hprintk("unable to locate tpd for dma buffer %x\n", 19331da177e4SLinus Torvalds TBRQ_TPD(he_dev->tbrq_head)); 19341da177e4SLinus Torvalds goto next_tbrq_entry; 19351da177e4SLinus Torvalds } 19361da177e4SLinus Torvalds 19371da177e4SLinus Torvalds if (TBRQ_EOS(he_dev->tbrq_head)) { 19381da177e4SLinus Torvalds HPRINTK("wake_up(tx_waitq) cid 0x%x\n", 19391da177e4SLinus Torvalds he_mkcid(he_dev, tpd->vcc->vpi, tpd->vcc->vci)); 19401da177e4SLinus Torvalds if (tpd->vcc) 19411da177e4SLinus Torvalds wake_up(&HE_VCC(tpd->vcc)->tx_waitq); 19421da177e4SLinus Torvalds 19431da177e4SLinus Torvalds goto next_tbrq_entry; 19441da177e4SLinus Torvalds } 19451da177e4SLinus Torvalds 19461da177e4SLinus Torvalds for (slot = 0; slot < TPD_MAXIOV; ++slot) { 19471da177e4SLinus Torvalds if (tpd->iovec[slot].addr) 19481da177e4SLinus Torvalds pci_unmap_single(he_dev->pci_dev, 19491da177e4SLinus Torvalds tpd->iovec[slot].addr, 19501da177e4SLinus Torvalds tpd->iovec[slot].len & TPD_LEN_MASK, 19511da177e4SLinus Torvalds PCI_DMA_TODEVICE); 19521da177e4SLinus Torvalds if (tpd->iovec[slot].len & TPD_LST) 19531da177e4SLinus Torvalds break; 19541da177e4SLinus Torvalds 19551da177e4SLinus Torvalds } 19561da177e4SLinus Torvalds 19571da177e4SLinus Torvalds if (tpd->skb) { /* && !TBRQ_MULTIPLE(he_dev->tbrq_head) */ 19581da177e4SLinus Torvalds if (tpd->vcc && tpd->vcc->pop) 19591da177e4SLinus Torvalds tpd->vcc->pop(tpd->vcc, tpd->skb); 19601da177e4SLinus Torvalds else 19611da177e4SLinus Torvalds dev_kfree_skb_any(tpd->skb); 19621da177e4SLinus Torvalds } 19631da177e4SLinus Torvalds 19641da177e4SLinus Torvalds next_tbrq_entry: 19651da177e4SLinus Torvalds if (tpd) 19661da177e4SLinus Torvalds pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); 19671da177e4SLinus Torvalds he_dev->tbrq_head = (struct he_tbrq *) 19681da177e4SLinus Torvalds ((unsigned long) he_dev->tbrq_base | 19691da177e4SLinus Torvalds TBRQ_MASK(++he_dev->tbrq_head)); 19701da177e4SLinus Torvalds } 19711da177e4SLinus Torvalds 19721da177e4SLinus Torvalds if (updated) { 19731da177e4SLinus Torvalds if (updated > he_dev->tbrq_peak) 19741da177e4SLinus Torvalds he_dev->tbrq_peak = updated; 19751da177e4SLinus Torvalds 19761da177e4SLinus Torvalds he_writel(he_dev, TBRQ_MASK(he_dev->tbrq_head), 19771da177e4SLinus Torvalds G0_TBRQ_H + (group * 16)); 19781da177e4SLinus Torvalds } 19791da177e4SLinus Torvalds } 19801da177e4SLinus Torvalds 19811da177e4SLinus Torvalds 19821da177e4SLinus Torvalds static void 19831da177e4SLinus Torvalds he_service_rbpl(struct he_dev *he_dev, int group) 19841da177e4SLinus Torvalds { 19851da177e4SLinus Torvalds struct he_rbp *newtail; 19861da177e4SLinus Torvalds struct he_rbp *rbpl_head; 19871da177e4SLinus Torvalds int moved = 0; 19881da177e4SLinus Torvalds 19891da177e4SLinus Torvalds rbpl_head = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base | 19901da177e4SLinus Torvalds RBPL_MASK(he_readl(he_dev, G0_RBPL_S))); 19911da177e4SLinus Torvalds 19921da177e4SLinus Torvalds for (;;) { 19931da177e4SLinus Torvalds newtail = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base | 19941da177e4SLinus Torvalds RBPL_MASK(he_dev->rbpl_tail+1)); 19951da177e4SLinus Torvalds 19961da177e4SLinus Torvalds /* table 3.42 -- rbpl_tail should never be set to rbpl_head */ 19971da177e4SLinus Torvalds if ((newtail == rbpl_head) || (newtail->status & RBP_LOANED)) 19981da177e4SLinus Torvalds break; 19991da177e4SLinus Torvalds 20001da177e4SLinus Torvalds newtail->status |= RBP_LOANED; 20011da177e4SLinus Torvalds he_dev->rbpl_tail = newtail; 20021da177e4SLinus Torvalds ++moved; 20031da177e4SLinus Torvalds } 20041da177e4SLinus Torvalds 20051da177e4SLinus Torvalds if (moved) 20061da177e4SLinus Torvalds he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), G0_RBPL_T); 20071da177e4SLinus Torvalds } 20081da177e4SLinus Torvalds 20091da177e4SLinus Torvalds static void 20101da177e4SLinus Torvalds he_service_rbps(struct he_dev *he_dev, int group) 20111da177e4SLinus Torvalds { 20121da177e4SLinus Torvalds struct he_rbp *newtail; 20131da177e4SLinus Torvalds struct he_rbp *rbps_head; 20141da177e4SLinus Torvalds int moved = 0; 20151da177e4SLinus Torvalds 20161da177e4SLinus Torvalds rbps_head = (struct he_rbp *) ((unsigned long)he_dev->rbps_base | 20171da177e4SLinus Torvalds RBPS_MASK(he_readl(he_dev, G0_RBPS_S))); 20181da177e4SLinus Torvalds 20191da177e4SLinus Torvalds for (;;) { 20201da177e4SLinus Torvalds newtail = (struct he_rbp *) ((unsigned long)he_dev->rbps_base | 20211da177e4SLinus Torvalds RBPS_MASK(he_dev->rbps_tail+1)); 20221da177e4SLinus Torvalds 20231da177e4SLinus Torvalds /* table 3.42 -- rbps_tail should never be set to rbps_head */ 20241da177e4SLinus Torvalds if ((newtail == rbps_head) || (newtail->status & RBP_LOANED)) 20251da177e4SLinus Torvalds break; 20261da177e4SLinus Torvalds 20271da177e4SLinus Torvalds newtail->status |= RBP_LOANED; 20281da177e4SLinus Torvalds he_dev->rbps_tail = newtail; 20291da177e4SLinus Torvalds ++moved; 20301da177e4SLinus Torvalds } 20311da177e4SLinus Torvalds 20321da177e4SLinus Torvalds if (moved) 20331da177e4SLinus Torvalds he_writel(he_dev, RBPS_MASK(he_dev->rbps_tail), G0_RBPS_T); 20341da177e4SLinus Torvalds } 20351da177e4SLinus Torvalds 20361da177e4SLinus Torvalds static void 20371da177e4SLinus Torvalds he_tasklet(unsigned long data) 20381da177e4SLinus Torvalds { 20391da177e4SLinus Torvalds unsigned long flags; 20401da177e4SLinus Torvalds struct he_dev *he_dev = (struct he_dev *) data; 20411da177e4SLinus Torvalds int group, type; 20421da177e4SLinus Torvalds int updated = 0; 20431da177e4SLinus Torvalds 20441da177e4SLinus Torvalds HPRINTK("tasklet (0x%lx)\n", data); 20451da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 20461da177e4SLinus Torvalds 20471da177e4SLinus Torvalds while (he_dev->irq_head != he_dev->irq_tail) { 20481da177e4SLinus Torvalds ++updated; 20491da177e4SLinus Torvalds 20501da177e4SLinus Torvalds type = ITYPE_TYPE(he_dev->irq_head->isw); 20511da177e4SLinus Torvalds group = ITYPE_GROUP(he_dev->irq_head->isw); 20521da177e4SLinus Torvalds 20531da177e4SLinus Torvalds switch (type) { 20541da177e4SLinus Torvalds case ITYPE_RBRQ_THRESH: 20551da177e4SLinus Torvalds HPRINTK("rbrq%d threshold\n", group); 20561da177e4SLinus Torvalds /* fall through */ 20571da177e4SLinus Torvalds case ITYPE_RBRQ_TIMER: 20581da177e4SLinus Torvalds if (he_service_rbrq(he_dev, group)) { 20591da177e4SLinus Torvalds he_service_rbpl(he_dev, group); 20601da177e4SLinus Torvalds he_service_rbps(he_dev, group); 20611da177e4SLinus Torvalds } 20621da177e4SLinus Torvalds break; 20631da177e4SLinus Torvalds case ITYPE_TBRQ_THRESH: 20641da177e4SLinus Torvalds HPRINTK("tbrq%d threshold\n", group); 20651da177e4SLinus Torvalds /* fall through */ 20661da177e4SLinus Torvalds case ITYPE_TPD_COMPLETE: 20671da177e4SLinus Torvalds he_service_tbrq(he_dev, group); 20681da177e4SLinus Torvalds break; 20691da177e4SLinus Torvalds case ITYPE_RBPL_THRESH: 20701da177e4SLinus Torvalds he_service_rbpl(he_dev, group); 20711da177e4SLinus Torvalds break; 20721da177e4SLinus Torvalds case ITYPE_RBPS_THRESH: 20731da177e4SLinus Torvalds he_service_rbps(he_dev, group); 20741da177e4SLinus Torvalds break; 20751da177e4SLinus Torvalds case ITYPE_PHY: 20761da177e4SLinus Torvalds HPRINTK("phy interrupt\n"); 20771da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 20781da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 20791da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->interrupt) 20801da177e4SLinus Torvalds he_dev->atm_dev->phy->interrupt(he_dev->atm_dev); 20811da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 20821da177e4SLinus Torvalds #endif 20831da177e4SLinus Torvalds break; 20841da177e4SLinus Torvalds case ITYPE_OTHER: 20851da177e4SLinus Torvalds switch (type|group) { 20861da177e4SLinus Torvalds case ITYPE_PARITY: 20871da177e4SLinus Torvalds hprintk("parity error\n"); 20881da177e4SLinus Torvalds break; 20891da177e4SLinus Torvalds case ITYPE_ABORT: 20901da177e4SLinus Torvalds hprintk("abort 0x%x\n", he_readl(he_dev, ABORT_ADDR)); 20911da177e4SLinus Torvalds break; 20921da177e4SLinus Torvalds } 20931da177e4SLinus Torvalds break; 20941da177e4SLinus Torvalds case ITYPE_TYPE(ITYPE_INVALID): 20951da177e4SLinus Torvalds /* see 8.1.1 -- check all queues */ 20961da177e4SLinus Torvalds 20971da177e4SLinus Torvalds HPRINTK("isw not updated 0x%x\n", he_dev->irq_head->isw); 20981da177e4SLinus Torvalds 20991da177e4SLinus Torvalds he_service_rbrq(he_dev, 0); 21001da177e4SLinus Torvalds he_service_rbpl(he_dev, 0); 21011da177e4SLinus Torvalds he_service_rbps(he_dev, 0); 21021da177e4SLinus Torvalds he_service_tbrq(he_dev, 0); 21031da177e4SLinus Torvalds break; 21041da177e4SLinus Torvalds default: 21051da177e4SLinus Torvalds hprintk("bad isw 0x%x?\n", he_dev->irq_head->isw); 21061da177e4SLinus Torvalds } 21071da177e4SLinus Torvalds 21081da177e4SLinus Torvalds he_dev->irq_head->isw = ITYPE_INVALID; 21091da177e4SLinus Torvalds 21101da177e4SLinus Torvalds he_dev->irq_head = (struct he_irq *) NEXT_ENTRY(he_dev->irq_base, he_dev->irq_head, IRQ_MASK); 21111da177e4SLinus Torvalds } 21121da177e4SLinus Torvalds 21131da177e4SLinus Torvalds if (updated) { 21141da177e4SLinus Torvalds if (updated > he_dev->irq_peak) 21151da177e4SLinus Torvalds he_dev->irq_peak = updated; 21161da177e4SLinus Torvalds 21171da177e4SLinus Torvalds he_writel(he_dev, 21181da177e4SLinus Torvalds IRQ_SIZE(CONFIG_IRQ_SIZE) | 21191da177e4SLinus Torvalds IRQ_THRESH(CONFIG_IRQ_THRESH) | 21201da177e4SLinus Torvalds IRQ_TAIL(he_dev->irq_tail), IRQ0_HEAD); 21211da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata; flush posted writes */ 21221da177e4SLinus Torvalds } 21231da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 21241da177e4SLinus Torvalds } 21251da177e4SLinus Torvalds 21261da177e4SLinus Torvalds static irqreturn_t 21277d12e780SDavid Howells he_irq_handler(int irq, void *dev_id) 21281da177e4SLinus Torvalds { 21291da177e4SLinus Torvalds unsigned long flags; 21301da177e4SLinus Torvalds struct he_dev *he_dev = (struct he_dev * )dev_id; 21311da177e4SLinus Torvalds int handled = 0; 21321da177e4SLinus Torvalds 21331da177e4SLinus Torvalds if (he_dev == NULL) 21341da177e4SLinus Torvalds return IRQ_NONE; 21351da177e4SLinus Torvalds 21361da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 21371da177e4SLinus Torvalds 21381da177e4SLinus Torvalds he_dev->irq_tail = (struct he_irq *) (((unsigned long)he_dev->irq_base) | 21391da177e4SLinus Torvalds (*he_dev->irq_tailoffset << 2)); 21401da177e4SLinus Torvalds 21411da177e4SLinus Torvalds if (he_dev->irq_tail == he_dev->irq_head) { 21421da177e4SLinus Torvalds HPRINTK("tailoffset not updated?\n"); 21431da177e4SLinus Torvalds he_dev->irq_tail = (struct he_irq *) ((unsigned long)he_dev->irq_base | 21441da177e4SLinus Torvalds ((he_readl(he_dev, IRQ0_BASE) & IRQ_MASK) << 2)); 21451da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata */ 21461da177e4SLinus Torvalds } 21471da177e4SLinus Torvalds 21481da177e4SLinus Torvalds #ifdef DEBUG 21491da177e4SLinus Torvalds if (he_dev->irq_head == he_dev->irq_tail /* && !IRQ_PENDING */) 21501da177e4SLinus Torvalds hprintk("spurious (or shared) interrupt?\n"); 21511da177e4SLinus Torvalds #endif 21521da177e4SLinus Torvalds 21531da177e4SLinus Torvalds if (he_dev->irq_head != he_dev->irq_tail) { 21541da177e4SLinus Torvalds handled = 1; 21551da177e4SLinus Torvalds tasklet_schedule(&he_dev->tasklet); 21561da177e4SLinus Torvalds he_writel(he_dev, INT_CLEAR_A, INT_FIFO); /* clear interrupt */ 21571da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* flush posted writes */ 21581da177e4SLinus Torvalds } 21591da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 21601da177e4SLinus Torvalds return IRQ_RETVAL(handled); 21611da177e4SLinus Torvalds 21621da177e4SLinus Torvalds } 21631da177e4SLinus Torvalds 21641da177e4SLinus Torvalds static __inline__ void 21651da177e4SLinus Torvalds __enqueue_tpd(struct he_dev *he_dev, struct he_tpd *tpd, unsigned cid) 21661da177e4SLinus Torvalds { 21671da177e4SLinus Torvalds struct he_tpdrq *new_tail; 21681da177e4SLinus Torvalds 21691da177e4SLinus Torvalds HPRINTK("tpdrq %p cid 0x%x -> tpdrq_tail %p\n", 21701da177e4SLinus Torvalds tpd, cid, he_dev->tpdrq_tail); 21711da177e4SLinus Torvalds 21721da177e4SLinus Torvalds /* new_tail = he_dev->tpdrq_tail; */ 21731da177e4SLinus Torvalds new_tail = (struct he_tpdrq *) ((unsigned long) he_dev->tpdrq_base | 21741da177e4SLinus Torvalds TPDRQ_MASK(he_dev->tpdrq_tail+1)); 21751da177e4SLinus Torvalds 21761da177e4SLinus Torvalds /* 21771da177e4SLinus Torvalds * check to see if we are about to set the tail == head 21781da177e4SLinus Torvalds * if true, update the head pointer from the adapter 21791da177e4SLinus Torvalds * to see if this is really the case (reading the queue 21801da177e4SLinus Torvalds * head for every enqueue would be unnecessarily slow) 21811da177e4SLinus Torvalds */ 21821da177e4SLinus Torvalds 21831da177e4SLinus Torvalds if (new_tail == he_dev->tpdrq_head) { 21841da177e4SLinus Torvalds he_dev->tpdrq_head = (struct he_tpdrq *) 21851da177e4SLinus Torvalds (((unsigned long)he_dev->tpdrq_base) | 21861da177e4SLinus Torvalds TPDRQ_MASK(he_readl(he_dev, TPDRQ_B_H))); 21871da177e4SLinus Torvalds 21881da177e4SLinus Torvalds if (new_tail == he_dev->tpdrq_head) { 2189d730e103SChas Williams int slot; 2190d730e103SChas Williams 21911da177e4SLinus Torvalds hprintk("tpdrq full (cid 0x%x)\n", cid); 21921da177e4SLinus Torvalds /* 21931da177e4SLinus Torvalds * FIXME 21941da177e4SLinus Torvalds * push tpd onto a transmit backlog queue 21951da177e4SLinus Torvalds * after service_tbrq, service the backlog 21961da177e4SLinus Torvalds * for now, we just drop the pdu 21971da177e4SLinus Torvalds */ 2198d730e103SChas Williams for (slot = 0; slot < TPD_MAXIOV; ++slot) { 2199d730e103SChas Williams if (tpd->iovec[slot].addr) 2200d730e103SChas Williams pci_unmap_single(he_dev->pci_dev, 2201d730e103SChas Williams tpd->iovec[slot].addr, 2202d730e103SChas Williams tpd->iovec[slot].len & TPD_LEN_MASK, 2203d730e103SChas Williams PCI_DMA_TODEVICE); 2204d730e103SChas Williams } 22051da177e4SLinus Torvalds if (tpd->skb) { 22061da177e4SLinus Torvalds if (tpd->vcc->pop) 22071da177e4SLinus Torvalds tpd->vcc->pop(tpd->vcc, tpd->skb); 22081da177e4SLinus Torvalds else 22091da177e4SLinus Torvalds dev_kfree_skb_any(tpd->skb); 22101da177e4SLinus Torvalds atomic_inc(&tpd->vcc->stats->tx_err); 22111da177e4SLinus Torvalds } 22121da177e4SLinus Torvalds pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); 22131da177e4SLinus Torvalds return; 22141da177e4SLinus Torvalds } 22151da177e4SLinus Torvalds } 22161da177e4SLinus Torvalds 22171da177e4SLinus Torvalds /* 2.1.5 transmit packet descriptor ready queue */ 22181da177e4SLinus Torvalds list_add_tail(&tpd->entry, &he_dev->outstanding_tpds); 22191da177e4SLinus Torvalds he_dev->tpdrq_tail->tpd = TPD_ADDR(tpd->status); 22201da177e4SLinus Torvalds he_dev->tpdrq_tail->cid = cid; 22211da177e4SLinus Torvalds wmb(); 22221da177e4SLinus Torvalds 22231da177e4SLinus Torvalds he_dev->tpdrq_tail = new_tail; 22241da177e4SLinus Torvalds 22251da177e4SLinus Torvalds he_writel(he_dev, TPDRQ_MASK(he_dev->tpdrq_tail), TPDRQ_T); 22261da177e4SLinus Torvalds (void) he_readl(he_dev, TPDRQ_T); /* flush posted writes */ 22271da177e4SLinus Torvalds } 22281da177e4SLinus Torvalds 22291da177e4SLinus Torvalds static int 22301da177e4SLinus Torvalds he_open(struct atm_vcc *vcc) 22311da177e4SLinus Torvalds { 22321da177e4SLinus Torvalds unsigned long flags; 22331da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 22341da177e4SLinus Torvalds struct he_vcc *he_vcc; 22351da177e4SLinus Torvalds int err = 0; 22361da177e4SLinus Torvalds unsigned cid, rsr0, rsr1, rsr4, tsr0, tsr0_aal, tsr4, period, reg, clock; 22371da177e4SLinus Torvalds short vpi = vcc->vpi; 22381da177e4SLinus Torvalds int vci = vcc->vci; 22391da177e4SLinus Torvalds 22401da177e4SLinus Torvalds if (vci == ATM_VCI_UNSPEC || vpi == ATM_VPI_UNSPEC) 22411da177e4SLinus Torvalds return 0; 22421da177e4SLinus Torvalds 22431da177e4SLinus Torvalds HPRINTK("open vcc %p %d.%d\n", vcc, vpi, vci); 22441da177e4SLinus Torvalds 22451da177e4SLinus Torvalds set_bit(ATM_VF_ADDR, &vcc->flags); 22461da177e4SLinus Torvalds 22471da177e4SLinus Torvalds cid = he_mkcid(he_dev, vpi, vci); 22481da177e4SLinus Torvalds 22495cbded58SRobert P. J. Day he_vcc = kmalloc(sizeof(struct he_vcc), GFP_ATOMIC); 22501da177e4SLinus Torvalds if (he_vcc == NULL) { 22511da177e4SLinus Torvalds hprintk("unable to allocate he_vcc during open\n"); 22521da177e4SLinus Torvalds return -ENOMEM; 22531da177e4SLinus Torvalds } 22541da177e4SLinus Torvalds 22551da177e4SLinus Torvalds he_vcc->iov_tail = he_vcc->iov_head; 22561da177e4SLinus Torvalds he_vcc->pdu_len = 0; 22571da177e4SLinus Torvalds he_vcc->rc_index = -1; 22581da177e4SLinus Torvalds 22591da177e4SLinus Torvalds init_waitqueue_head(&he_vcc->rx_waitq); 22601da177e4SLinus Torvalds init_waitqueue_head(&he_vcc->tx_waitq); 22611da177e4SLinus Torvalds 22621da177e4SLinus Torvalds vcc->dev_data = he_vcc; 22631da177e4SLinus Torvalds 22641da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE) { 22651da177e4SLinus Torvalds int pcr_goal; 22661da177e4SLinus Torvalds 22671da177e4SLinus Torvalds pcr_goal = atm_pcr_goal(&vcc->qos.txtp); 22681da177e4SLinus Torvalds if (pcr_goal == 0) 22691da177e4SLinus Torvalds pcr_goal = he_dev->atm_dev->link_rate; 22701da177e4SLinus Torvalds if (pcr_goal < 0) /* means round down, technically */ 22711da177e4SLinus Torvalds pcr_goal = -pcr_goal; 22721da177e4SLinus Torvalds 22731da177e4SLinus Torvalds HPRINTK("open tx cid 0x%x pcr_goal %d\n", cid, pcr_goal); 22741da177e4SLinus Torvalds 22751da177e4SLinus Torvalds switch (vcc->qos.aal) { 22761da177e4SLinus Torvalds case ATM_AAL5: 22771da177e4SLinus Torvalds tsr0_aal = TSR0_AAL5; 22781da177e4SLinus Torvalds tsr4 = TSR4_AAL5; 22791da177e4SLinus Torvalds break; 22801da177e4SLinus Torvalds case ATM_AAL0: 22811da177e4SLinus Torvalds tsr0_aal = TSR0_AAL0_SDU; 22821da177e4SLinus Torvalds tsr4 = TSR4_AAL0_SDU; 22831da177e4SLinus Torvalds break; 22841da177e4SLinus Torvalds default: 22851da177e4SLinus Torvalds err = -EINVAL; 22861da177e4SLinus Torvalds goto open_failed; 22871da177e4SLinus Torvalds } 22881da177e4SLinus Torvalds 22891da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 22901da177e4SLinus Torvalds tsr0 = he_readl_tsr0(he_dev, cid); 22911da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22921da177e4SLinus Torvalds 22931da177e4SLinus Torvalds if (TSR0_CONN_STATE(tsr0) != 0) { 22941da177e4SLinus Torvalds hprintk("cid 0x%x not idle (tsr0 = 0x%x)\n", cid, tsr0); 22951da177e4SLinus Torvalds err = -EBUSY; 22961da177e4SLinus Torvalds goto open_failed; 22971da177e4SLinus Torvalds } 22981da177e4SLinus Torvalds 22991da177e4SLinus Torvalds switch (vcc->qos.txtp.traffic_class) { 23001da177e4SLinus Torvalds case ATM_UBR: 23011da177e4SLinus Torvalds /* 2.3.3.1 open connection ubr */ 23021da177e4SLinus Torvalds 23031da177e4SLinus Torvalds tsr0 = TSR0_UBR | TSR0_GROUP(0) | tsr0_aal | 23041da177e4SLinus Torvalds TSR0_USE_WMIN | TSR0_UPDATE_GER; 23051da177e4SLinus Torvalds break; 23061da177e4SLinus Torvalds 23071da177e4SLinus Torvalds case ATM_CBR: 23081da177e4SLinus Torvalds /* 2.3.3.2 open connection cbr */ 23091da177e4SLinus Torvalds 23101da177e4SLinus Torvalds /* 8.2.3 cbr scheduler wrap problem -- limit to 90% total link rate */ 23111da177e4SLinus Torvalds if ((he_dev->total_bw + pcr_goal) 23121da177e4SLinus Torvalds > (he_dev->atm_dev->link_rate * 9 / 10)) 23131da177e4SLinus Torvalds { 23141da177e4SLinus Torvalds err = -EBUSY; 23151da177e4SLinus Torvalds goto open_failed; 23161da177e4SLinus Torvalds } 23171da177e4SLinus Torvalds 23181da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); /* also protects he_dev->cs_stper[] */ 23191da177e4SLinus Torvalds 23201da177e4SLinus Torvalds /* find an unused cs_stper register */ 23211da177e4SLinus Torvalds for (reg = 0; reg < HE_NUM_CS_STPER; ++reg) 23221da177e4SLinus Torvalds if (he_dev->cs_stper[reg].inuse == 0 || 23231da177e4SLinus Torvalds he_dev->cs_stper[reg].pcr == pcr_goal) 23241da177e4SLinus Torvalds break; 23251da177e4SLinus Torvalds 23261da177e4SLinus Torvalds if (reg == HE_NUM_CS_STPER) { 23271da177e4SLinus Torvalds err = -EBUSY; 23281da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23291da177e4SLinus Torvalds goto open_failed; 23301da177e4SLinus Torvalds } 23311da177e4SLinus Torvalds 23321da177e4SLinus Torvalds he_dev->total_bw += pcr_goal; 23331da177e4SLinus Torvalds 23341da177e4SLinus Torvalds he_vcc->rc_index = reg; 23351da177e4SLinus Torvalds ++he_dev->cs_stper[reg].inuse; 23361da177e4SLinus Torvalds he_dev->cs_stper[reg].pcr = pcr_goal; 23371da177e4SLinus Torvalds 23381da177e4SLinus Torvalds clock = he_is622(he_dev) ? 66667000 : 50000000; 23391da177e4SLinus Torvalds period = clock / pcr_goal; 23401da177e4SLinus Torvalds 23411da177e4SLinus Torvalds HPRINTK("rc_index = %d period = %d\n", 23421da177e4SLinus Torvalds reg, period); 23431da177e4SLinus Torvalds 23441da177e4SLinus Torvalds he_writel_mbox(he_dev, rate_to_atmf(period/2), 23451da177e4SLinus Torvalds CS_STPER0 + reg); 23461da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23471da177e4SLinus Torvalds 23481da177e4SLinus Torvalds tsr0 = TSR0_CBR | TSR0_GROUP(0) | tsr0_aal | 23491da177e4SLinus Torvalds TSR0_RC_INDEX(reg); 23501da177e4SLinus Torvalds 23511da177e4SLinus Torvalds break; 23521da177e4SLinus Torvalds default: 23531da177e4SLinus Torvalds err = -EINVAL; 23541da177e4SLinus Torvalds goto open_failed; 23551da177e4SLinus Torvalds } 23561da177e4SLinus Torvalds 23571da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 23581da177e4SLinus Torvalds 23591da177e4SLinus Torvalds he_writel_tsr0(he_dev, tsr0, cid); 23601da177e4SLinus Torvalds he_writel_tsr4(he_dev, tsr4 | 1, cid); 23611da177e4SLinus Torvalds he_writel_tsr1(he_dev, TSR1_MCR(rate_to_atmf(0)) | 23621da177e4SLinus Torvalds TSR1_PCR(rate_to_atmf(pcr_goal)), cid); 23631da177e4SLinus Torvalds he_writel_tsr2(he_dev, TSR2_ACR(rate_to_atmf(pcr_goal)), cid); 23641da177e4SLinus Torvalds he_writel_tsr9(he_dev, TSR9_OPEN_CONN, cid); 23651da177e4SLinus Torvalds 23661da177e4SLinus Torvalds he_writel_tsr3(he_dev, 0x0, cid); 23671da177e4SLinus Torvalds he_writel_tsr5(he_dev, 0x0, cid); 23681da177e4SLinus Torvalds he_writel_tsr6(he_dev, 0x0, cid); 23691da177e4SLinus Torvalds he_writel_tsr7(he_dev, 0x0, cid); 23701da177e4SLinus Torvalds he_writel_tsr8(he_dev, 0x0, cid); 23711da177e4SLinus Torvalds he_writel_tsr10(he_dev, 0x0, cid); 23721da177e4SLinus Torvalds he_writel_tsr11(he_dev, 0x0, cid); 23731da177e4SLinus Torvalds he_writel_tsr12(he_dev, 0x0, cid); 23741da177e4SLinus Torvalds he_writel_tsr13(he_dev, 0x0, cid); 23751da177e4SLinus Torvalds he_writel_tsr14(he_dev, 0x0, cid); 23761da177e4SLinus Torvalds (void) he_readl_tsr0(he_dev, cid); /* flush posted writes */ 23771da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23781da177e4SLinus Torvalds } 23791da177e4SLinus Torvalds 23801da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 23811da177e4SLinus Torvalds unsigned aal; 23821da177e4SLinus Torvalds 23831da177e4SLinus Torvalds HPRINTK("open rx cid 0x%x (rx_waitq %p)\n", cid, 23841da177e4SLinus Torvalds &HE_VCC(vcc)->rx_waitq); 23851da177e4SLinus Torvalds 23861da177e4SLinus Torvalds switch (vcc->qos.aal) { 23871da177e4SLinus Torvalds case ATM_AAL5: 23881da177e4SLinus Torvalds aal = RSR0_AAL5; 23891da177e4SLinus Torvalds break; 23901da177e4SLinus Torvalds case ATM_AAL0: 23911da177e4SLinus Torvalds aal = RSR0_RAWCELL; 23921da177e4SLinus Torvalds break; 23931da177e4SLinus Torvalds default: 23941da177e4SLinus Torvalds err = -EINVAL; 23951da177e4SLinus Torvalds goto open_failed; 23961da177e4SLinus Torvalds } 23971da177e4SLinus Torvalds 23981da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 23991da177e4SLinus Torvalds 24001da177e4SLinus Torvalds rsr0 = he_readl_rsr0(he_dev, cid); 24011da177e4SLinus Torvalds if (rsr0 & RSR0_OPEN_CONN) { 24021da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 24031da177e4SLinus Torvalds 24041da177e4SLinus Torvalds hprintk("cid 0x%x not idle (rsr0 = 0x%x)\n", cid, rsr0); 24051da177e4SLinus Torvalds err = -EBUSY; 24061da177e4SLinus Torvalds goto open_failed; 24071da177e4SLinus Torvalds } 24081da177e4SLinus Torvalds 24091da177e4SLinus Torvalds rsr1 = RSR1_GROUP(0); 24101da177e4SLinus Torvalds rsr4 = RSR4_GROUP(0); 24111da177e4SLinus Torvalds rsr0 = vcc->qos.rxtp.traffic_class == ATM_UBR ? 24121da177e4SLinus Torvalds (RSR0_EPD_ENABLE|RSR0_PPD_ENABLE) : 0; 24131da177e4SLinus Torvalds 24141da177e4SLinus Torvalds #ifdef USE_CHECKSUM_HW 24151da177e4SLinus Torvalds if (vpi == 0 && vci >= ATM_NOT_RSV_VCI) 24161da177e4SLinus Torvalds rsr0 |= RSR0_TCP_CKSUM; 24171da177e4SLinus Torvalds #endif 24181da177e4SLinus Torvalds 24191da177e4SLinus Torvalds he_writel_rsr4(he_dev, rsr4, cid); 24201da177e4SLinus Torvalds he_writel_rsr1(he_dev, rsr1, cid); 24211da177e4SLinus Torvalds /* 5.1.11 last parameter initialized should be 24221da177e4SLinus Torvalds the open/closed indication in rsr0 */ 24231da177e4SLinus Torvalds he_writel_rsr0(he_dev, 24241da177e4SLinus Torvalds rsr0 | RSR0_START_PDU | RSR0_OPEN_CONN | aal, cid); 24251da177e4SLinus Torvalds (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */ 24261da177e4SLinus Torvalds 24271da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 24281da177e4SLinus Torvalds } 24291da177e4SLinus Torvalds 24301da177e4SLinus Torvalds open_failed: 24311da177e4SLinus Torvalds 24321da177e4SLinus Torvalds if (err) { 24331da177e4SLinus Torvalds kfree(he_vcc); 24341da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 24351da177e4SLinus Torvalds } 24361da177e4SLinus Torvalds else 24371da177e4SLinus Torvalds set_bit(ATM_VF_READY, &vcc->flags); 24381da177e4SLinus Torvalds 24391da177e4SLinus Torvalds return err; 24401da177e4SLinus Torvalds } 24411da177e4SLinus Torvalds 24421da177e4SLinus Torvalds static void 24431da177e4SLinus Torvalds he_close(struct atm_vcc *vcc) 24441da177e4SLinus Torvalds { 24451da177e4SLinus Torvalds unsigned long flags; 24461da177e4SLinus Torvalds DECLARE_WAITQUEUE(wait, current); 24471da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 24481da177e4SLinus Torvalds struct he_tpd *tpd; 24491da177e4SLinus Torvalds unsigned cid; 24501da177e4SLinus Torvalds struct he_vcc *he_vcc = HE_VCC(vcc); 24511da177e4SLinus Torvalds #define MAX_RETRY 30 24521da177e4SLinus Torvalds int retry = 0, sleep = 1, tx_inuse; 24531da177e4SLinus Torvalds 24541da177e4SLinus Torvalds HPRINTK("close vcc %p %d.%d\n", vcc, vcc->vpi, vcc->vci); 24551da177e4SLinus Torvalds 24561da177e4SLinus Torvalds clear_bit(ATM_VF_READY, &vcc->flags); 24571da177e4SLinus Torvalds cid = he_mkcid(he_dev, vcc->vpi, vcc->vci); 24581da177e4SLinus Torvalds 24591da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 24601da177e4SLinus Torvalds int timeout; 24611da177e4SLinus Torvalds 24621da177e4SLinus Torvalds HPRINTK("close rx cid 0x%x\n", cid); 24631da177e4SLinus Torvalds 24641da177e4SLinus Torvalds /* 2.7.2.2 close receive operation */ 24651da177e4SLinus Torvalds 24661da177e4SLinus Torvalds /* wait for previous close (if any) to finish */ 24671da177e4SLinus Torvalds 24681da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 24691da177e4SLinus Torvalds while (he_readl(he_dev, RCC_STAT) & RCC_BUSY) { 24701da177e4SLinus Torvalds HPRINTK("close cid 0x%x RCC_BUSY\n", cid); 24711da177e4SLinus Torvalds udelay(250); 24721da177e4SLinus Torvalds } 24731da177e4SLinus Torvalds 24741da177e4SLinus Torvalds set_current_state(TASK_UNINTERRUPTIBLE); 24751da177e4SLinus Torvalds add_wait_queue(&he_vcc->rx_waitq, &wait); 24761da177e4SLinus Torvalds 24771da177e4SLinus Torvalds he_writel_rsr0(he_dev, RSR0_CLOSE_CONN, cid); 24781da177e4SLinus Torvalds (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */ 24791da177e4SLinus Torvalds he_writel_mbox(he_dev, cid, RXCON_CLOSE); 24801da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 24811da177e4SLinus Torvalds 24821da177e4SLinus Torvalds timeout = schedule_timeout(30*HZ); 24831da177e4SLinus Torvalds 24841da177e4SLinus Torvalds remove_wait_queue(&he_vcc->rx_waitq, &wait); 24851da177e4SLinus Torvalds set_current_state(TASK_RUNNING); 24861da177e4SLinus Torvalds 24871da177e4SLinus Torvalds if (timeout == 0) 24881da177e4SLinus Torvalds hprintk("close rx timeout cid 0x%x\n", cid); 24891da177e4SLinus Torvalds 24901da177e4SLinus Torvalds HPRINTK("close rx cid 0x%x complete\n", cid); 24911da177e4SLinus Torvalds 24921da177e4SLinus Torvalds } 24931da177e4SLinus Torvalds 24941da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE) { 24951da177e4SLinus Torvalds volatile unsigned tsr4, tsr0; 24961da177e4SLinus Torvalds int timeout; 24971da177e4SLinus Torvalds 24981da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x\n", cid); 24991da177e4SLinus Torvalds 25001da177e4SLinus Torvalds /* 2.1.2 25011da177e4SLinus Torvalds * 25021da177e4SLinus Torvalds * ... the host must first stop queueing packets to the TPDRQ 25031da177e4SLinus Torvalds * on the connection to be closed, then wait for all outstanding 25041da177e4SLinus Torvalds * packets to be transmitted and their buffers returned to the 25051da177e4SLinus Torvalds * TBRQ. When the last packet on the connection arrives in the 25061da177e4SLinus Torvalds * TBRQ, the host issues the close command to the adapter. 25071da177e4SLinus Torvalds */ 25081da177e4SLinus Torvalds 2509504bb3b5Schas williams - CONTRACTOR while (((tx_inuse = atomic_read(&sk_atm(vcc)->sk_wmem_alloc)) > 1) && 25101da177e4SLinus Torvalds (retry < MAX_RETRY)) { 25111da177e4SLinus Torvalds msleep(sleep); 25121da177e4SLinus Torvalds if (sleep < 250) 25131da177e4SLinus Torvalds sleep = sleep * 2; 25141da177e4SLinus Torvalds 25151da177e4SLinus Torvalds ++retry; 25161da177e4SLinus Torvalds } 25171da177e4SLinus Torvalds 2518504bb3b5Schas williams - CONTRACTOR if (tx_inuse > 1) 25191da177e4SLinus Torvalds hprintk("close tx cid 0x%x tx_inuse = %d\n", cid, tx_inuse); 25201da177e4SLinus Torvalds 25211da177e4SLinus Torvalds /* 2.3.1.1 generic close operations with flush */ 25221da177e4SLinus Torvalds 25231da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 25241da177e4SLinus Torvalds he_writel_tsr4_upper(he_dev, TSR4_FLUSH_CONN, cid); 25251da177e4SLinus Torvalds /* also clears TSR4_SESSION_ENDED */ 25261da177e4SLinus Torvalds 25271da177e4SLinus Torvalds switch (vcc->qos.txtp.traffic_class) { 25281da177e4SLinus Torvalds case ATM_UBR: 25291da177e4SLinus Torvalds he_writel_tsr1(he_dev, 25301da177e4SLinus Torvalds TSR1_MCR(rate_to_atmf(200000)) 25311da177e4SLinus Torvalds | TSR1_PCR(0), cid); 25321da177e4SLinus Torvalds break; 25331da177e4SLinus Torvalds case ATM_CBR: 25341da177e4SLinus Torvalds he_writel_tsr14_upper(he_dev, TSR14_DELETE, cid); 25351da177e4SLinus Torvalds break; 25361da177e4SLinus Torvalds } 25371da177e4SLinus Torvalds (void) he_readl_tsr4(he_dev, cid); /* flush posted writes */ 25381da177e4SLinus Torvalds 25391da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 25401da177e4SLinus Torvalds if (tpd == NULL) { 25411da177e4SLinus Torvalds hprintk("close tx he_alloc_tpd failed cid 0x%x\n", cid); 25421da177e4SLinus Torvalds goto close_tx_incomplete; 25431da177e4SLinus Torvalds } 25441da177e4SLinus Torvalds tpd->status |= TPD_EOS | TPD_INT; 25451da177e4SLinus Torvalds tpd->skb = NULL; 25461da177e4SLinus Torvalds tpd->vcc = vcc; 25471da177e4SLinus Torvalds wmb(); 25481da177e4SLinus Torvalds 25491da177e4SLinus Torvalds set_current_state(TASK_UNINTERRUPTIBLE); 25501da177e4SLinus Torvalds add_wait_queue(&he_vcc->tx_waitq, &wait); 25511da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 25521da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 25531da177e4SLinus Torvalds 25541da177e4SLinus Torvalds timeout = schedule_timeout(30*HZ); 25551da177e4SLinus Torvalds 25561da177e4SLinus Torvalds remove_wait_queue(&he_vcc->tx_waitq, &wait); 25571da177e4SLinus Torvalds set_current_state(TASK_RUNNING); 25581da177e4SLinus Torvalds 25591da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 25601da177e4SLinus Torvalds 25611da177e4SLinus Torvalds if (timeout == 0) { 25621da177e4SLinus Torvalds hprintk("close tx timeout cid 0x%x\n", cid); 25631da177e4SLinus Torvalds goto close_tx_incomplete; 25641da177e4SLinus Torvalds } 25651da177e4SLinus Torvalds 25661da177e4SLinus Torvalds while (!((tsr4 = he_readl_tsr4(he_dev, cid)) & TSR4_SESSION_ENDED)) { 25671da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x !TSR4_SESSION_ENDED (tsr4 = 0x%x)\n", cid, tsr4); 25681da177e4SLinus Torvalds udelay(250); 25691da177e4SLinus Torvalds } 25701da177e4SLinus Torvalds 25711da177e4SLinus Torvalds while (TSR0_CONN_STATE(tsr0 = he_readl_tsr0(he_dev, cid)) != 0) { 25721da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x TSR0_CONN_STATE != 0 (tsr0 = 0x%x)\n", cid, tsr0); 25731da177e4SLinus Torvalds udelay(250); 25741da177e4SLinus Torvalds } 25751da177e4SLinus Torvalds 25761da177e4SLinus Torvalds close_tx_incomplete: 25771da177e4SLinus Torvalds 25781da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class == ATM_CBR) { 25791da177e4SLinus Torvalds int reg = he_vcc->rc_index; 25801da177e4SLinus Torvalds 25811da177e4SLinus Torvalds HPRINTK("cs_stper reg = %d\n", reg); 25821da177e4SLinus Torvalds 25831da177e4SLinus Torvalds if (he_dev->cs_stper[reg].inuse == 0) 25841da177e4SLinus Torvalds hprintk("cs_stper[%d].inuse = 0!\n", reg); 25851da177e4SLinus Torvalds else 25861da177e4SLinus Torvalds --he_dev->cs_stper[reg].inuse; 25871da177e4SLinus Torvalds 25881da177e4SLinus Torvalds he_dev->total_bw -= he_dev->cs_stper[reg].pcr; 25891da177e4SLinus Torvalds } 25901da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 25911da177e4SLinus Torvalds 25921da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x complete\n", cid); 25931da177e4SLinus Torvalds } 25941da177e4SLinus Torvalds 25951da177e4SLinus Torvalds kfree(he_vcc); 25961da177e4SLinus Torvalds 25971da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 25981da177e4SLinus Torvalds } 25991da177e4SLinus Torvalds 26001da177e4SLinus Torvalds static int 26011da177e4SLinus Torvalds he_send(struct atm_vcc *vcc, struct sk_buff *skb) 26021da177e4SLinus Torvalds { 26031da177e4SLinus Torvalds unsigned long flags; 26041da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 26051da177e4SLinus Torvalds unsigned cid = he_mkcid(he_dev, vcc->vpi, vcc->vci); 26061da177e4SLinus Torvalds struct he_tpd *tpd; 26071da177e4SLinus Torvalds #ifdef USE_SCATTERGATHER 26081da177e4SLinus Torvalds int i, slot = 0; 26091da177e4SLinus Torvalds #endif 26101da177e4SLinus Torvalds 26111da177e4SLinus Torvalds #define HE_TPD_BUFSIZE 0xffff 26121da177e4SLinus Torvalds 26131da177e4SLinus Torvalds HPRINTK("send %d.%d\n", vcc->vpi, vcc->vci); 26141da177e4SLinus Torvalds 26151da177e4SLinus Torvalds if ((skb->len > HE_TPD_BUFSIZE) || 26161da177e4SLinus Torvalds ((vcc->qos.aal == ATM_AAL0) && (skb->len != ATM_AAL0_SDU))) { 26171da177e4SLinus Torvalds hprintk("buffer too large (or small) -- %d bytes\n", skb->len ); 26181da177e4SLinus Torvalds if (vcc->pop) 26191da177e4SLinus Torvalds vcc->pop(vcc, skb); 26201da177e4SLinus Torvalds else 26211da177e4SLinus Torvalds dev_kfree_skb_any(skb); 26221da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 26231da177e4SLinus Torvalds return -EINVAL; 26241da177e4SLinus Torvalds } 26251da177e4SLinus Torvalds 26261da177e4SLinus Torvalds #ifndef USE_SCATTERGATHER 26271da177e4SLinus Torvalds if (skb_shinfo(skb)->nr_frags) { 26281da177e4SLinus Torvalds hprintk("no scatter/gather support\n"); 26291da177e4SLinus Torvalds if (vcc->pop) 26301da177e4SLinus Torvalds vcc->pop(vcc, skb); 26311da177e4SLinus Torvalds else 26321da177e4SLinus Torvalds dev_kfree_skb_any(skb); 26331da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 26341da177e4SLinus Torvalds return -EINVAL; 26351da177e4SLinus Torvalds } 26361da177e4SLinus Torvalds #endif 26371da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 26381da177e4SLinus Torvalds 26391da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 26401da177e4SLinus Torvalds if (tpd == NULL) { 26411da177e4SLinus Torvalds if (vcc->pop) 26421da177e4SLinus Torvalds vcc->pop(vcc, skb); 26431da177e4SLinus Torvalds else 26441da177e4SLinus Torvalds dev_kfree_skb_any(skb); 26451da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 26461da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 26471da177e4SLinus Torvalds return -ENOMEM; 26481da177e4SLinus Torvalds } 26491da177e4SLinus Torvalds 26501da177e4SLinus Torvalds if (vcc->qos.aal == ATM_AAL5) 26511da177e4SLinus Torvalds tpd->status |= TPD_CELLTYPE(TPD_USERCELL); 26521da177e4SLinus Torvalds else { 26531da177e4SLinus Torvalds char *pti_clp = (void *) (skb->data + 3); 26541da177e4SLinus Torvalds int clp, pti; 26551da177e4SLinus Torvalds 26561da177e4SLinus Torvalds pti = (*pti_clp & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT; 26571da177e4SLinus Torvalds clp = (*pti_clp & ATM_HDR_CLP); 26581da177e4SLinus Torvalds tpd->status |= TPD_CELLTYPE(pti); 26591da177e4SLinus Torvalds if (clp) 26601da177e4SLinus Torvalds tpd->status |= TPD_CLP; 26611da177e4SLinus Torvalds 26621da177e4SLinus Torvalds skb_pull(skb, ATM_AAL0_SDU - ATM_CELL_PAYLOAD); 26631da177e4SLinus Torvalds } 26641da177e4SLinus Torvalds 26651da177e4SLinus Torvalds #ifdef USE_SCATTERGATHER 26661da177e4SLinus Torvalds tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev, skb->data, 26671da177e4SLinus Torvalds skb->len - skb->data_len, PCI_DMA_TODEVICE); 26681da177e4SLinus Torvalds tpd->iovec[slot].len = skb->len - skb->data_len; 26691da177e4SLinus Torvalds ++slot; 26701da177e4SLinus Torvalds 26711da177e4SLinus Torvalds for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 26721da177e4SLinus Torvalds skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; 26731da177e4SLinus Torvalds 26741da177e4SLinus Torvalds if (slot == TPD_MAXIOV) { /* queue tpd; start new tpd */ 26751da177e4SLinus Torvalds tpd->vcc = vcc; 26761da177e4SLinus Torvalds tpd->skb = NULL; /* not the last fragment 26771da177e4SLinus Torvalds so dont ->push() yet */ 26781da177e4SLinus Torvalds wmb(); 26791da177e4SLinus Torvalds 26801da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 26811da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 26821da177e4SLinus Torvalds if (tpd == NULL) { 26831da177e4SLinus Torvalds if (vcc->pop) 26841da177e4SLinus Torvalds vcc->pop(vcc, skb); 26851da177e4SLinus Torvalds else 26861da177e4SLinus Torvalds dev_kfree_skb_any(skb); 26871da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 26881da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 26891da177e4SLinus Torvalds return -ENOMEM; 26901da177e4SLinus Torvalds } 26911da177e4SLinus Torvalds tpd->status |= TPD_USERCELL; 26921da177e4SLinus Torvalds slot = 0; 26931da177e4SLinus Torvalds } 26941da177e4SLinus Torvalds 26951da177e4SLinus Torvalds tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev, 26961da177e4SLinus Torvalds (void *) page_address(frag->page) + frag->page_offset, 26971da177e4SLinus Torvalds frag->size, PCI_DMA_TODEVICE); 26981da177e4SLinus Torvalds tpd->iovec[slot].len = frag->size; 26991da177e4SLinus Torvalds ++slot; 27001da177e4SLinus Torvalds 27011da177e4SLinus Torvalds } 27021da177e4SLinus Torvalds 27031da177e4SLinus Torvalds tpd->iovec[slot - 1].len |= TPD_LST; 27041da177e4SLinus Torvalds #else 27051da177e4SLinus Torvalds tpd->address0 = pci_map_single(he_dev->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE); 27061da177e4SLinus Torvalds tpd->length0 = skb->len | TPD_LST; 27071da177e4SLinus Torvalds #endif 27081da177e4SLinus Torvalds tpd->status |= TPD_INT; 27091da177e4SLinus Torvalds 27101da177e4SLinus Torvalds tpd->vcc = vcc; 27111da177e4SLinus Torvalds tpd->skb = skb; 27121da177e4SLinus Torvalds wmb(); 27131da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 27141da177e4SLinus Torvalds 27151da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 27161da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27171da177e4SLinus Torvalds 27181da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx); 27191da177e4SLinus Torvalds 27201da177e4SLinus Torvalds return 0; 27211da177e4SLinus Torvalds } 27221da177e4SLinus Torvalds 27231da177e4SLinus Torvalds static int 27241da177e4SLinus Torvalds he_ioctl(struct atm_dev *atm_dev, unsigned int cmd, void __user *arg) 27251da177e4SLinus Torvalds { 27261da177e4SLinus Torvalds unsigned long flags; 27271da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 27281da177e4SLinus Torvalds struct he_ioctl_reg reg; 27291da177e4SLinus Torvalds int err = 0; 27301da177e4SLinus Torvalds 27311da177e4SLinus Torvalds switch (cmd) { 27321da177e4SLinus Torvalds case HE_GET_REG: 27331da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 27341da177e4SLinus Torvalds return -EPERM; 27351da177e4SLinus Torvalds 27361da177e4SLinus Torvalds if (copy_from_user(®, arg, 27371da177e4SLinus Torvalds sizeof(struct he_ioctl_reg))) 27381da177e4SLinus Torvalds return -EFAULT; 27391da177e4SLinus Torvalds 27401da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 27411da177e4SLinus Torvalds switch (reg.type) { 27421da177e4SLinus Torvalds case HE_REGTYPE_PCI: 2743e0c5567dSroel kluin if (reg.addr >= HE_REGMAP_SIZE) { 274428e84ab3SRobert T. Johnson err = -EINVAL; 274528e84ab3SRobert T. Johnson break; 274628e84ab3SRobert T. Johnson } 274728e84ab3SRobert T. Johnson 27481da177e4SLinus Torvalds reg.val = he_readl(he_dev, reg.addr); 27491da177e4SLinus Torvalds break; 27501da177e4SLinus Torvalds case HE_REGTYPE_RCM: 27511da177e4SLinus Torvalds reg.val = 27521da177e4SLinus Torvalds he_readl_rcm(he_dev, reg.addr); 27531da177e4SLinus Torvalds break; 27541da177e4SLinus Torvalds case HE_REGTYPE_TCM: 27551da177e4SLinus Torvalds reg.val = 27561da177e4SLinus Torvalds he_readl_tcm(he_dev, reg.addr); 27571da177e4SLinus Torvalds break; 27581da177e4SLinus Torvalds case HE_REGTYPE_MBOX: 27591da177e4SLinus Torvalds reg.val = 27601da177e4SLinus Torvalds he_readl_mbox(he_dev, reg.addr); 27611da177e4SLinus Torvalds break; 27621da177e4SLinus Torvalds default: 27631da177e4SLinus Torvalds err = -EINVAL; 27641da177e4SLinus Torvalds break; 27651da177e4SLinus Torvalds } 27661da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27671da177e4SLinus Torvalds if (err == 0) 27681da177e4SLinus Torvalds if (copy_to_user(arg, ®, 27691da177e4SLinus Torvalds sizeof(struct he_ioctl_reg))) 27701da177e4SLinus Torvalds return -EFAULT; 27711da177e4SLinus Torvalds break; 27721da177e4SLinus Torvalds default: 27731da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 27741da177e4SLinus Torvalds if (atm_dev->phy && atm_dev->phy->ioctl) 27751da177e4SLinus Torvalds err = atm_dev->phy->ioctl(atm_dev, cmd, arg); 27761da177e4SLinus Torvalds #else /* CONFIG_ATM_HE_USE_SUNI */ 27771da177e4SLinus Torvalds err = -EINVAL; 27781da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 27791da177e4SLinus Torvalds break; 27801da177e4SLinus Torvalds } 27811da177e4SLinus Torvalds 27821da177e4SLinus Torvalds return err; 27831da177e4SLinus Torvalds } 27841da177e4SLinus Torvalds 27851da177e4SLinus Torvalds static void 27861da177e4SLinus Torvalds he_phy_put(struct atm_dev *atm_dev, unsigned char val, unsigned long addr) 27871da177e4SLinus Torvalds { 27881da177e4SLinus Torvalds unsigned long flags; 27891da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 27901da177e4SLinus Torvalds 27911da177e4SLinus Torvalds HPRINTK("phy_put(val 0x%x, addr 0x%lx)\n", val, addr); 27921da177e4SLinus Torvalds 27931da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 27941da177e4SLinus Torvalds he_writel(he_dev, val, FRAMER + (addr*4)); 27951da177e4SLinus Torvalds (void) he_readl(he_dev, FRAMER + (addr*4)); /* flush posted writes */ 27961da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27971da177e4SLinus Torvalds } 27981da177e4SLinus Torvalds 27991da177e4SLinus Torvalds 28001da177e4SLinus Torvalds static unsigned char 28011da177e4SLinus Torvalds he_phy_get(struct atm_dev *atm_dev, unsigned long addr) 28021da177e4SLinus Torvalds { 28031da177e4SLinus Torvalds unsigned long flags; 28041da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 28051da177e4SLinus Torvalds unsigned reg; 28061da177e4SLinus Torvalds 28071da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 28081da177e4SLinus Torvalds reg = he_readl(he_dev, FRAMER + (addr*4)); 28091da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 28101da177e4SLinus Torvalds 28111da177e4SLinus Torvalds HPRINTK("phy_get(addr 0x%lx) =0x%x\n", addr, reg); 28121da177e4SLinus Torvalds return reg; 28131da177e4SLinus Torvalds } 28141da177e4SLinus Torvalds 28151da177e4SLinus Torvalds static int 28161da177e4SLinus Torvalds he_proc_read(struct atm_dev *dev, loff_t *pos, char *page) 28171da177e4SLinus Torvalds { 28181da177e4SLinus Torvalds unsigned long flags; 28191da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(dev); 28201da177e4SLinus Torvalds int left, i; 28211da177e4SLinus Torvalds #ifdef notdef 28221da177e4SLinus Torvalds struct he_rbrq *rbrq_tail; 28231da177e4SLinus Torvalds struct he_tpdrq *tpdrq_head; 28241da177e4SLinus Torvalds int rbpl_head, rbpl_tail; 28251da177e4SLinus Torvalds #endif 28261da177e4SLinus Torvalds static long mcc = 0, oec = 0, dcc = 0, cec = 0; 28271da177e4SLinus Torvalds 28281da177e4SLinus Torvalds 28291da177e4SLinus Torvalds left = *pos; 28301da177e4SLinus Torvalds if (!left--) 2831900092a4SAdrian Bunk return sprintf(page, "ATM he driver\n"); 28321da177e4SLinus Torvalds 28331da177e4SLinus Torvalds if (!left--) 28341da177e4SLinus Torvalds return sprintf(page, "%s%s\n\n", 28351da177e4SLinus Torvalds he_dev->prod_id, he_dev->media & 0x40 ? "SM" : "MM"); 28361da177e4SLinus Torvalds 28371da177e4SLinus Torvalds if (!left--) 28381da177e4SLinus Torvalds return sprintf(page, "Mismatched Cells VPI/VCI Not Open Dropped Cells RCM Dropped Cells\n"); 28391da177e4SLinus Torvalds 28401da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 28411da177e4SLinus Torvalds mcc += he_readl(he_dev, MCC); 28421da177e4SLinus Torvalds oec += he_readl(he_dev, OEC); 28431da177e4SLinus Torvalds dcc += he_readl(he_dev, DCC); 28441da177e4SLinus Torvalds cec += he_readl(he_dev, CEC); 28451da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 28461da177e4SLinus Torvalds 28471da177e4SLinus Torvalds if (!left--) 28481da177e4SLinus Torvalds return sprintf(page, "%16ld %16ld %13ld %17ld\n\n", 28491da177e4SLinus Torvalds mcc, oec, dcc, cec); 28501da177e4SLinus Torvalds 28511da177e4SLinus Torvalds if (!left--) 28521da177e4SLinus Torvalds return sprintf(page, "irq_size = %d inuse = ? peak = %d\n", 28531da177e4SLinus Torvalds CONFIG_IRQ_SIZE, he_dev->irq_peak); 28541da177e4SLinus Torvalds 28551da177e4SLinus Torvalds if (!left--) 28561da177e4SLinus Torvalds return sprintf(page, "tpdrq_size = %d inuse = ?\n", 28571da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE); 28581da177e4SLinus Torvalds 28591da177e4SLinus Torvalds if (!left--) 28601da177e4SLinus Torvalds return sprintf(page, "rbrq_size = %d inuse = ? peak = %d\n", 28611da177e4SLinus Torvalds CONFIG_RBRQ_SIZE, he_dev->rbrq_peak); 28621da177e4SLinus Torvalds 28631da177e4SLinus Torvalds if (!left--) 28641da177e4SLinus Torvalds return sprintf(page, "tbrq_size = %d peak = %d\n", 28651da177e4SLinus Torvalds CONFIG_TBRQ_SIZE, he_dev->tbrq_peak); 28661da177e4SLinus Torvalds 28671da177e4SLinus Torvalds 28681da177e4SLinus Torvalds #ifdef notdef 28691da177e4SLinus Torvalds rbpl_head = RBPL_MASK(he_readl(he_dev, G0_RBPL_S)); 28701da177e4SLinus Torvalds rbpl_tail = RBPL_MASK(he_readl(he_dev, G0_RBPL_T)); 28711da177e4SLinus Torvalds 28721da177e4SLinus Torvalds inuse = rbpl_head - rbpl_tail; 28731da177e4SLinus Torvalds if (inuse < 0) 28741da177e4SLinus Torvalds inuse += CONFIG_RBPL_SIZE * sizeof(struct he_rbp); 28751da177e4SLinus Torvalds inuse /= sizeof(struct he_rbp); 28761da177e4SLinus Torvalds 28771da177e4SLinus Torvalds if (!left--) 28781da177e4SLinus Torvalds return sprintf(page, "rbpl_size = %d inuse = %d\n\n", 28791da177e4SLinus Torvalds CONFIG_RBPL_SIZE, inuse); 28801da177e4SLinus Torvalds #endif 28811da177e4SLinus Torvalds 28821da177e4SLinus Torvalds if (!left--) 28831da177e4SLinus Torvalds return sprintf(page, "rate controller periods (cbr)\n pcr #vc\n"); 28841da177e4SLinus Torvalds 28851da177e4SLinus Torvalds for (i = 0; i < HE_NUM_CS_STPER; ++i) 28861da177e4SLinus Torvalds if (!left--) 28871da177e4SLinus Torvalds return sprintf(page, "cs_stper%-2d %8ld %3d\n", i, 28881da177e4SLinus Torvalds he_dev->cs_stper[i].pcr, 28891da177e4SLinus Torvalds he_dev->cs_stper[i].inuse); 28901da177e4SLinus Torvalds 28911da177e4SLinus Torvalds if (!left--) 28921da177e4SLinus Torvalds return sprintf(page, "total bw (cbr): %d (limit %d)\n", 28931da177e4SLinus Torvalds he_dev->total_bw, he_dev->atm_dev->link_rate * 10 / 9); 28941da177e4SLinus Torvalds 28951da177e4SLinus Torvalds return 0; 28961da177e4SLinus Torvalds } 28971da177e4SLinus Torvalds 28981da177e4SLinus Torvalds /* eeprom routines -- see 4.7 */ 28991da177e4SLinus Torvalds 29000ee897d4SAdrian Bunk static u8 read_prom_byte(struct he_dev *he_dev, int addr) 29011da177e4SLinus Torvalds { 29021da177e4SLinus Torvalds u32 val = 0, tmp_read = 0; 29031da177e4SLinus Torvalds int i, j = 0; 29041da177e4SLinus Torvalds u8 byte_read = 0; 29051da177e4SLinus Torvalds 29061da177e4SLinus Torvalds val = readl(he_dev->membase + HOST_CNTL); 29071da177e4SLinus Torvalds val &= 0xFFFFE0FF; 29081da177e4SLinus Torvalds 29091da177e4SLinus Torvalds /* Turn on write enable */ 29101da177e4SLinus Torvalds val |= 0x800; 29111da177e4SLinus Torvalds he_writel(he_dev, val, HOST_CNTL); 29121da177e4SLinus Torvalds 29131da177e4SLinus Torvalds /* Send READ instruction */ 291436fe55d6SAhmed S. Darwish for (i = 0; i < ARRAY_SIZE(readtab); i++) { 29151da177e4SLinus Torvalds he_writel(he_dev, val | readtab[i], HOST_CNTL); 29161da177e4SLinus Torvalds udelay(EEPROM_DELAY); 29171da177e4SLinus Torvalds } 29181da177e4SLinus Torvalds 29191da177e4SLinus Torvalds /* Next, we need to send the byte address to read from */ 29201da177e4SLinus Torvalds for (i = 7; i >= 0; i--) { 29211da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL); 29221da177e4SLinus Torvalds udelay(EEPROM_DELAY); 29231da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL); 29241da177e4SLinus Torvalds udelay(EEPROM_DELAY); 29251da177e4SLinus Torvalds } 29261da177e4SLinus Torvalds 29271da177e4SLinus Torvalds j = 0; 29281da177e4SLinus Torvalds 29291da177e4SLinus Torvalds val &= 0xFFFFF7FF; /* Turn off write enable */ 29301da177e4SLinus Torvalds he_writel(he_dev, val, HOST_CNTL); 29311da177e4SLinus Torvalds 29321da177e4SLinus Torvalds /* Now, we can read data from the EEPROM by clocking it in */ 29331da177e4SLinus Torvalds for (i = 7; i >= 0; i--) { 29341da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++], HOST_CNTL); 29351da177e4SLinus Torvalds udelay(EEPROM_DELAY); 29361da177e4SLinus Torvalds tmp_read = he_readl(he_dev, HOST_CNTL); 29371da177e4SLinus Torvalds byte_read |= (unsigned char) 29381da177e4SLinus Torvalds ((tmp_read & ID_DOUT) >> ID_DOFFSET << i); 29391da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++], HOST_CNTL); 29401da177e4SLinus Torvalds udelay(EEPROM_DELAY); 29411da177e4SLinus Torvalds } 29421da177e4SLinus Torvalds 29431da177e4SLinus Torvalds he_writel(he_dev, val | ID_CS, HOST_CNTL); 29441da177e4SLinus Torvalds udelay(EEPROM_DELAY); 29451da177e4SLinus Torvalds 29461da177e4SLinus Torvalds return byte_read; 29471da177e4SLinus Torvalds } 29481da177e4SLinus Torvalds 29491da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 29501da177e4SLinus Torvalds MODULE_AUTHOR("chas williams <chas@cmf.nrl.navy.mil>"); 29511da177e4SLinus Torvalds MODULE_DESCRIPTION("ForeRunnerHE ATM Adapter driver"); 29521da177e4SLinus Torvalds module_param(disable64, bool, 0); 29531da177e4SLinus Torvalds MODULE_PARM_DESC(disable64, "disable 64-bit pci bus transfers"); 29541da177e4SLinus Torvalds module_param(nvpibits, short, 0); 29551da177e4SLinus Torvalds MODULE_PARM_DESC(nvpibits, "numbers of bits for vpi (default 0)"); 29561da177e4SLinus Torvalds module_param(nvcibits, short, 0); 29571da177e4SLinus Torvalds MODULE_PARM_DESC(nvcibits, "numbers of bits for vci (default 12)"); 29581da177e4SLinus Torvalds module_param(rx_skb_reserve, short, 0); 29591da177e4SLinus Torvalds MODULE_PARM_DESC(rx_skb_reserve, "padding for receive skb (default 16)"); 29601da177e4SLinus Torvalds module_param(irq_coalesce, bool, 0); 29611da177e4SLinus Torvalds MODULE_PARM_DESC(irq_coalesce, "use interrupt coalescing (default 1)"); 29621da177e4SLinus Torvalds module_param(sdh, bool, 0); 29631da177e4SLinus Torvalds MODULE_PARM_DESC(sdh, "use SDH framing (default 0)"); 29641da177e4SLinus Torvalds 29651da177e4SLinus Torvalds static struct pci_device_id he_pci_tbl[] = { 29661da177e4SLinus Torvalds { PCI_VENDOR_ID_FORE, PCI_DEVICE_ID_FORE_HE, PCI_ANY_ID, PCI_ANY_ID, 29671da177e4SLinus Torvalds 0, 0, 0 }, 29681da177e4SLinus Torvalds { 0, } 29691da177e4SLinus Torvalds }; 29701da177e4SLinus Torvalds 29711da177e4SLinus Torvalds MODULE_DEVICE_TABLE(pci, he_pci_tbl); 29721da177e4SLinus Torvalds 29731da177e4SLinus Torvalds static struct pci_driver he_driver = { 29741da177e4SLinus Torvalds .name = "he", 29751da177e4SLinus Torvalds .probe = he_init_one, 29761da177e4SLinus Torvalds .remove = __devexit_p(he_remove_one), 29771da177e4SLinus Torvalds .id_table = he_pci_tbl, 29781da177e4SLinus Torvalds }; 29791da177e4SLinus Torvalds 29801da177e4SLinus Torvalds static int __init he_init(void) 29811da177e4SLinus Torvalds { 29821da177e4SLinus Torvalds return pci_register_driver(&he_driver); 29831da177e4SLinus Torvalds } 29841da177e4SLinus Torvalds 29851da177e4SLinus Torvalds static void __exit he_cleanup(void) 29861da177e4SLinus Torvalds { 29871da177e4SLinus Torvalds pci_unregister_driver(&he_driver); 29881da177e4SLinus Torvalds } 29891da177e4SLinus Torvalds 29901da177e4SLinus Torvalds module_init(he_init); 29911da177e4SLinus Torvalds module_exit(he_cleanup); 2992