11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds 31da177e4SLinus Torvalds he.c 41da177e4SLinus Torvalds 51da177e4SLinus Torvalds ForeRunnerHE ATM Adapter driver for ATM on Linux 61da177e4SLinus Torvalds Copyright (C) 1999-2001 Naval Research Laboratory 71da177e4SLinus Torvalds 81da177e4SLinus Torvalds This library is free software; you can redistribute it and/or 91da177e4SLinus Torvalds modify it under the terms of the GNU Lesser General Public 101da177e4SLinus Torvalds License as published by the Free Software Foundation; either 111da177e4SLinus Torvalds version 2.1 of the License, or (at your option) any later version. 121da177e4SLinus Torvalds 131da177e4SLinus Torvalds This library is distributed in the hope that it will be useful, 141da177e4SLinus Torvalds but WITHOUT ANY WARRANTY; without even the implied warranty of 151da177e4SLinus Torvalds MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 161da177e4SLinus Torvalds Lesser General Public License for more details. 171da177e4SLinus Torvalds 181da177e4SLinus Torvalds You should have received a copy of the GNU Lesser General Public 191da177e4SLinus Torvalds License along with this library; if not, write to the Free Software 201da177e4SLinus Torvalds Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 211da177e4SLinus Torvalds 221da177e4SLinus Torvalds */ 231da177e4SLinus Torvalds 241da177e4SLinus Torvalds /* 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds he.c 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds ForeRunnerHE ATM Adapter driver for ATM on Linux 291da177e4SLinus Torvalds Copyright (C) 1999-2001 Naval Research Laboratory 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds Permission to use, copy, modify and distribute this software and its 321da177e4SLinus Torvalds documentation is hereby granted, provided that both the copyright 331da177e4SLinus Torvalds notice and this permission notice appear in all copies of the software, 341da177e4SLinus Torvalds derivative works or modified versions, and any portions thereof, and 351da177e4SLinus Torvalds that both notices appear in supporting documentation. 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds NRL ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION AND 381da177e4SLinus Torvalds DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER 391da177e4SLinus Torvalds RESULTING FROM THE USE OF THIS SOFTWARE. 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds This driver was written using the "Programmer's Reference Manual for 421da177e4SLinus Torvalds ForeRunnerHE(tm)", MANU0361-01 - Rev. A, 08/21/98. 431da177e4SLinus Torvalds 441da177e4SLinus Torvalds AUTHORS: 451da177e4SLinus Torvalds chas williams <chas@cmf.nrl.navy.mil> 461da177e4SLinus Torvalds eric kinzie <ekinzie@cmf.nrl.navy.mil> 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds NOTES: 491da177e4SLinus Torvalds 4096 supported 'connections' 501da177e4SLinus Torvalds group 0 is used for all traffic 511da177e4SLinus Torvalds interrupt queue 0 is used for all interrupts 521da177e4SLinus Torvalds aal0 support (based on work from ulrich.u.muller@nokia.com) 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds */ 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds #include <linux/module.h> 571da177e4SLinus Torvalds #include <linux/kernel.h> 581da177e4SLinus Torvalds #include <linux/skbuff.h> 591da177e4SLinus Torvalds #include <linux/pci.h> 601da177e4SLinus Torvalds #include <linux/errno.h> 611da177e4SLinus Torvalds #include <linux/types.h> 621da177e4SLinus Torvalds #include <linux/string.h> 631da177e4SLinus Torvalds #include <linux/delay.h> 641da177e4SLinus Torvalds #include <linux/init.h> 651da177e4SLinus Torvalds #include <linux/mm.h> 661da177e4SLinus Torvalds #include <linux/sched.h> 671da177e4SLinus Torvalds #include <linux/timer.h> 681da177e4SLinus Torvalds #include <linux/interrupt.h> 69e5695f08Schas williams #include <linux/dma-mapping.h> 70e623d625Schas williams - CONTRACTOR #include <linux/bitmap.h> 715a0e3ad6STejun Heo #include <linux/slab.h> 721da177e4SLinus Torvalds #include <asm/io.h> 731da177e4SLinus Torvalds #include <asm/byteorder.h> 741da177e4SLinus Torvalds #include <asm/uaccess.h> 751da177e4SLinus Torvalds 761da177e4SLinus Torvalds #include <linux/atmdev.h> 771da177e4SLinus Torvalds #include <linux/atm.h> 781da177e4SLinus Torvalds #include <linux/sonet.h> 791da177e4SLinus Torvalds 801da177e4SLinus Torvalds #undef USE_SCATTERGATHER 811da177e4SLinus Torvalds #undef USE_CHECKSUM_HW /* still confused about this */ 821da177e4SLinus Torvalds /* #undef HE_DEBUG */ 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds #include "he.h" 851da177e4SLinus Torvalds #include "suni.h" 861da177e4SLinus Torvalds #include <linux/atm_he.h> 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds #define hprintk(fmt,args...) printk(KERN_ERR DEV_LABEL "%d: " fmt, he_dev->number , ##args) 891da177e4SLinus Torvalds 901da177e4SLinus Torvalds #ifdef HE_DEBUG 911da177e4SLinus Torvalds #define HPRINTK(fmt,args...) printk(KERN_DEBUG DEV_LABEL "%d: " fmt, he_dev->number , ##args) 921da177e4SLinus Torvalds #else /* !HE_DEBUG */ 931da177e4SLinus Torvalds #define HPRINTK(fmt,args...) do { } while (0) 941da177e4SLinus Torvalds #endif /* HE_DEBUG */ 951da177e4SLinus Torvalds 961da177e4SLinus Torvalds /* declarations */ 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds static int he_open(struct atm_vcc *vcc); 991da177e4SLinus Torvalds static void he_close(struct atm_vcc *vcc); 1001da177e4SLinus Torvalds static int he_send(struct atm_vcc *vcc, struct sk_buff *skb); 1011da177e4SLinus Torvalds static int he_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg); 1027d12e780SDavid Howells static irqreturn_t he_irq_handler(int irq, void *dev_id); 1031da177e4SLinus Torvalds static void he_tasklet(unsigned long data); 1041da177e4SLinus Torvalds static int he_proc_read(struct atm_dev *dev,loff_t *pos,char *page); 1051da177e4SLinus Torvalds static int he_start(struct atm_dev *dev); 1061da177e4SLinus Torvalds static void he_stop(struct he_dev *dev); 1071da177e4SLinus Torvalds static void he_phy_put(struct atm_dev *, unsigned char, unsigned long); 1081da177e4SLinus Torvalds static unsigned char he_phy_get(struct atm_dev *, unsigned long); 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds static u8 read_prom_byte(struct he_dev *he_dev, int addr); 1111da177e4SLinus Torvalds 1121da177e4SLinus Torvalds /* globals */ 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds static struct he_dev *he_devs; 11590ab5ee9SRusty Russell static bool disable64; 1161da177e4SLinus Torvalds static short nvpibits = -1; 1171da177e4SLinus Torvalds static short nvcibits = -1; 1181da177e4SLinus Torvalds static short rx_skb_reserve = 16; 11990ab5ee9SRusty Russell static bool irq_coalesce = 1; 12090ab5ee9SRusty Russell static bool sdh = 0; 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvalds /* Read from EEPROM = 0000 0011b */ 1231da177e4SLinus Torvalds static unsigned int readtab[] = { 1241da177e4SLinus Torvalds CS_HIGH | CLK_HIGH, 1251da177e4SLinus Torvalds CS_LOW | CLK_LOW, 1261da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1271da177e4SLinus Torvalds CLK_LOW, 1281da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1291da177e4SLinus Torvalds CLK_LOW, 1301da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1311da177e4SLinus Torvalds CLK_LOW, 1321da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1331da177e4SLinus Torvalds CLK_LOW, 1341da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1351da177e4SLinus Torvalds CLK_LOW, 1361da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1371da177e4SLinus Torvalds CLK_LOW | SI_HIGH, 1381da177e4SLinus Torvalds CLK_HIGH | SI_HIGH, /* 1 */ 1391da177e4SLinus Torvalds CLK_LOW | SI_HIGH, 1401da177e4SLinus Torvalds CLK_HIGH | SI_HIGH /* 1 */ 1411da177e4SLinus Torvalds }; 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds /* Clock to read from/write to the EEPROM */ 1441da177e4SLinus Torvalds static unsigned int clocktab[] = { 1451da177e4SLinus Torvalds CLK_LOW, 1461da177e4SLinus Torvalds CLK_HIGH, 1471da177e4SLinus Torvalds CLK_LOW, 1481da177e4SLinus Torvalds CLK_HIGH, 1491da177e4SLinus Torvalds CLK_LOW, 1501da177e4SLinus Torvalds CLK_HIGH, 1511da177e4SLinus Torvalds CLK_LOW, 1521da177e4SLinus Torvalds CLK_HIGH, 1531da177e4SLinus Torvalds CLK_LOW, 1541da177e4SLinus Torvalds CLK_HIGH, 1551da177e4SLinus Torvalds CLK_LOW, 1561da177e4SLinus Torvalds CLK_HIGH, 1571da177e4SLinus Torvalds CLK_LOW, 1581da177e4SLinus Torvalds CLK_HIGH, 1591da177e4SLinus Torvalds CLK_LOW, 1601da177e4SLinus Torvalds CLK_HIGH, 1611da177e4SLinus Torvalds CLK_LOW 1621da177e4SLinus Torvalds }; 1631da177e4SLinus Torvalds 1641da177e4SLinus Torvalds static struct atmdev_ops he_ops = 1651da177e4SLinus Torvalds { 1661da177e4SLinus Torvalds .open = he_open, 1671da177e4SLinus Torvalds .close = he_close, 1681da177e4SLinus Torvalds .ioctl = he_ioctl, 1691da177e4SLinus Torvalds .send = he_send, 1701da177e4SLinus Torvalds .phy_put = he_phy_put, 1711da177e4SLinus Torvalds .phy_get = he_phy_get, 1721da177e4SLinus Torvalds .proc_read = he_proc_read, 1731da177e4SLinus Torvalds .owner = THIS_MODULE 1741da177e4SLinus Torvalds }; 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds #define he_writel(dev, val, reg) do { writel(val, (dev)->membase + (reg)); wmb(); } while (0) 1771da177e4SLinus Torvalds #define he_readl(dev, reg) readl((dev)->membase + (reg)) 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds /* section 2.12 connection memory access */ 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds static __inline__ void 1821da177e4SLinus Torvalds he_writel_internal(struct he_dev *he_dev, unsigned val, unsigned addr, 1831da177e4SLinus Torvalds unsigned flags) 1841da177e4SLinus Torvalds { 1851da177e4SLinus Torvalds he_writel(he_dev, val, CON_DAT); 1861da177e4SLinus Torvalds (void) he_readl(he_dev, CON_DAT); /* flush posted writes */ 1871da177e4SLinus Torvalds he_writel(he_dev, flags | CON_CTL_WRITE | CON_CTL_ADDR(addr), CON_CTL); 1881da177e4SLinus Torvalds while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY); 1891da177e4SLinus Torvalds } 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds #define he_writel_rcm(dev, val, reg) \ 1921da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_RCM) 1931da177e4SLinus Torvalds 1941da177e4SLinus Torvalds #define he_writel_tcm(dev, val, reg) \ 1951da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_TCM) 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds #define he_writel_mbox(dev, val, reg) \ 1981da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_MBOX) 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds static unsigned 2011da177e4SLinus Torvalds he_readl_internal(struct he_dev *he_dev, unsigned addr, unsigned flags) 2021da177e4SLinus Torvalds { 2031da177e4SLinus Torvalds he_writel(he_dev, flags | CON_CTL_READ | CON_CTL_ADDR(addr), CON_CTL); 2041da177e4SLinus Torvalds while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY); 2051da177e4SLinus Torvalds return he_readl(he_dev, CON_DAT); 2061da177e4SLinus Torvalds } 2071da177e4SLinus Torvalds 2081da177e4SLinus Torvalds #define he_readl_rcm(dev, reg) \ 2091da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_RCM) 2101da177e4SLinus Torvalds 2111da177e4SLinus Torvalds #define he_readl_tcm(dev, reg) \ 2121da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_TCM) 2131da177e4SLinus Torvalds 2141da177e4SLinus Torvalds #define he_readl_mbox(dev, reg) \ 2151da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_MBOX) 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds /* figure 2.2 connection id */ 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds #define he_mkcid(dev, vpi, vci) (((vpi << (dev)->vcibits) | vci) & 0x1fff) 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds /* 2.5.1 per connection transmit state registers */ 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds #define he_writel_tsr0(dev, val, cid) \ 2251da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 0) 2261da177e4SLinus Torvalds #define he_readl_tsr0(dev, cid) \ 2271da177e4SLinus Torvalds he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 0) 2281da177e4SLinus Torvalds 2291da177e4SLinus Torvalds #define he_writel_tsr1(dev, val, cid) \ 2301da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 1) 2311da177e4SLinus Torvalds 2321da177e4SLinus Torvalds #define he_writel_tsr2(dev, val, cid) \ 2331da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 2) 2341da177e4SLinus Torvalds 2351da177e4SLinus Torvalds #define he_writel_tsr3(dev, val, cid) \ 2361da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 3) 2371da177e4SLinus Torvalds 2381da177e4SLinus Torvalds #define he_writel_tsr4(dev, val, cid) \ 2391da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 4) 2401da177e4SLinus Torvalds 2411da177e4SLinus Torvalds /* from page 2-20 2421da177e4SLinus Torvalds * 2431da177e4SLinus Torvalds * NOTE While the transmit connection is active, bits 23 through 0 2441da177e4SLinus Torvalds * of this register must not be written by the host. Byte 2451da177e4SLinus Torvalds * enables should be used during normal operation when writing 2461da177e4SLinus Torvalds * the most significant byte. 2471da177e4SLinus Torvalds */ 2481da177e4SLinus Torvalds 2491da177e4SLinus Torvalds #define he_writel_tsr4_upper(dev, val, cid) \ 2501da177e4SLinus Torvalds he_writel_internal(dev, val, CONFIG_TSRA | (cid << 3) | 4, \ 2511da177e4SLinus Torvalds CON_CTL_TCM \ 2521da177e4SLinus Torvalds | CON_BYTE_DISABLE_2 \ 2531da177e4SLinus Torvalds | CON_BYTE_DISABLE_1 \ 2541da177e4SLinus Torvalds | CON_BYTE_DISABLE_0) 2551da177e4SLinus Torvalds 2561da177e4SLinus Torvalds #define he_readl_tsr4(dev, cid) \ 2571da177e4SLinus Torvalds he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 4) 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvalds #define he_writel_tsr5(dev, val, cid) \ 2601da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 5) 2611da177e4SLinus Torvalds 2621da177e4SLinus Torvalds #define he_writel_tsr6(dev, val, cid) \ 2631da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 6) 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds #define he_writel_tsr7(dev, val, cid) \ 2661da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 7) 2671da177e4SLinus Torvalds 2681da177e4SLinus Torvalds 2691da177e4SLinus Torvalds #define he_writel_tsr8(dev, val, cid) \ 2701da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 0) 2711da177e4SLinus Torvalds 2721da177e4SLinus Torvalds #define he_writel_tsr9(dev, val, cid) \ 2731da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 1) 2741da177e4SLinus Torvalds 2751da177e4SLinus Torvalds #define he_writel_tsr10(dev, val, cid) \ 2761da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 2) 2771da177e4SLinus Torvalds 2781da177e4SLinus Torvalds #define he_writel_tsr11(dev, val, cid) \ 2791da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 3) 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds 2821da177e4SLinus Torvalds #define he_writel_tsr12(dev, val, cid) \ 2831da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 0) 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvalds #define he_writel_tsr13(dev, val, cid) \ 2861da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 1) 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvalds 2891da177e4SLinus Torvalds #define he_writel_tsr14(dev, val, cid) \ 2901da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRD | cid) 2911da177e4SLinus Torvalds 2921da177e4SLinus Torvalds #define he_writel_tsr14_upper(dev, val, cid) \ 2931da177e4SLinus Torvalds he_writel_internal(dev, val, CONFIG_TSRD | cid, \ 2941da177e4SLinus Torvalds CON_CTL_TCM \ 2951da177e4SLinus Torvalds | CON_BYTE_DISABLE_2 \ 2961da177e4SLinus Torvalds | CON_BYTE_DISABLE_1 \ 2971da177e4SLinus Torvalds | CON_BYTE_DISABLE_0) 2981da177e4SLinus Torvalds 2991da177e4SLinus Torvalds /* 2.7.1 per connection receive state registers */ 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds #define he_writel_rsr0(dev, val, cid) \ 3021da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 0) 3031da177e4SLinus Torvalds #define he_readl_rsr0(dev, cid) \ 3041da177e4SLinus Torvalds he_readl_rcm(dev, 0x00000 | (cid << 3) | 0) 3051da177e4SLinus Torvalds 3061da177e4SLinus Torvalds #define he_writel_rsr1(dev, val, cid) \ 3071da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 1) 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds #define he_writel_rsr2(dev, val, cid) \ 3101da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 2) 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds #define he_writel_rsr3(dev, val, cid) \ 3131da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 3) 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds #define he_writel_rsr4(dev, val, cid) \ 3161da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 4) 3171da177e4SLinus Torvalds 3181da177e4SLinus Torvalds #define he_writel_rsr5(dev, val, cid) \ 3191da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 5) 3201da177e4SLinus Torvalds 3211da177e4SLinus Torvalds #define he_writel_rsr6(dev, val, cid) \ 3221da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 6) 3231da177e4SLinus Torvalds 3241da177e4SLinus Torvalds #define he_writel_rsr7(dev, val, cid) \ 3251da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 7) 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds static __inline__ struct atm_vcc* 3281da177e4SLinus Torvalds __find_vcc(struct he_dev *he_dev, unsigned cid) 3291da177e4SLinus Torvalds { 3301da177e4SLinus Torvalds struct hlist_head *head; 3311da177e4SLinus Torvalds struct atm_vcc *vcc; 3321da177e4SLinus Torvalds struct 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 340b67bfe0dSSasha Levin sk_for_each(s, 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 3516c44512dSGreg Kroah-Hartman static int he_init_one(struct pci_dev *pci_dev, 3526c44512dSGreg Kroah-Hartman 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; 362ede58ef2Schas williams - CONTRACTOR if (dma_set_mask_and_coherent(&pci_dev->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 368d9ca676bSDan Williams atm_dev = atm_dev_register(DEV_LABEL, &pci_dev->dev, &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 4086c44512dSGreg Kroah-Hartman static void he_remove_one(struct pci_dev *pci_dev) 4091da177e4SLinus Torvalds { 4101da177e4SLinus Torvalds struct atm_dev *atm_dev; 4111da177e4SLinus Torvalds struct he_dev *he_dev; 4121da177e4SLinus Torvalds 4131da177e4SLinus Torvalds atm_dev = pci_get_drvdata(pci_dev); 4141da177e4SLinus Torvalds he_dev = HE_DEV(atm_dev); 4151da177e4SLinus Torvalds 4161da177e4SLinus Torvalds /* need to remove from he_devs */ 4171da177e4SLinus Torvalds 4181da177e4SLinus Torvalds he_stop(he_dev); 4191da177e4SLinus Torvalds atm_dev_deregister(atm_dev); 4201da177e4SLinus Torvalds kfree(he_dev); 4211da177e4SLinus Torvalds 4221da177e4SLinus Torvalds pci_disable_device(pci_dev); 4231da177e4SLinus Torvalds } 4241da177e4SLinus Torvalds 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds static unsigned 4271da177e4SLinus Torvalds rate_to_atmf(unsigned rate) /* cps to atm forum format */ 4281da177e4SLinus Torvalds { 4291da177e4SLinus Torvalds #define NONZERO (1 << 14) 4301da177e4SLinus Torvalds 4311da177e4SLinus Torvalds unsigned exp = 0; 4321da177e4SLinus Torvalds 4331da177e4SLinus Torvalds if (rate == 0) 4341da177e4SLinus Torvalds return 0; 4351da177e4SLinus Torvalds 4361da177e4SLinus Torvalds rate <<= 9; 4371da177e4SLinus Torvalds while (rate > 0x3ff) { 4381da177e4SLinus Torvalds ++exp; 4391da177e4SLinus Torvalds rate >>= 1; 4401da177e4SLinus Torvalds } 4411da177e4SLinus Torvalds 4421da177e4SLinus Torvalds return (NONZERO | (exp << 9) | (rate & 0x1ff)); 4431da177e4SLinus Torvalds } 4441da177e4SLinus Torvalds 4456c44512dSGreg Kroah-Hartman static void he_init_rx_lbfp0(struct he_dev *he_dev) 4461da177e4SLinus Torvalds { 4471da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 4481da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 4491da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 4501da177e4SLinus Torvalds unsigned row_offset = he_dev->r0_startrow * he_dev->bytes_per_row; 4511da177e4SLinus Torvalds 4521da177e4SLinus Torvalds lbufd_index = 0; 4531da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA); 4541da177e4SLinus Torvalds 4551da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, RLBF0_H); 4561da177e4SLinus Torvalds 4571da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->r0_numbuffs; ++i) { 4581da177e4SLinus Torvalds lbufd_index += 2; 4591da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 4601da177e4SLinus Torvalds 4611da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 4621da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 4631da177e4SLinus Torvalds 4641da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 4651da177e4SLinus Torvalds lbuf_count = 0; 4661da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 4671da177e4SLinus Torvalds } 4681da177e4SLinus Torvalds lbm_offset += 4; 4691da177e4SLinus Torvalds } 4701da177e4SLinus Torvalds 4711da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 2, RLBF0_T); 4721da177e4SLinus Torvalds he_writel(he_dev, he_dev->r0_numbuffs, RLBF0_C); 4731da177e4SLinus Torvalds } 4741da177e4SLinus Torvalds 4756c44512dSGreg Kroah-Hartman static void he_init_rx_lbfp1(struct he_dev *he_dev) 4761da177e4SLinus Torvalds { 4771da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 4781da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 4791da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 4801da177e4SLinus Torvalds unsigned row_offset = he_dev->r1_startrow * he_dev->bytes_per_row; 4811da177e4SLinus Torvalds 4821da177e4SLinus Torvalds lbufd_index = 1; 4831da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index); 4841da177e4SLinus Torvalds 4851da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, RLBF1_H); 4861da177e4SLinus Torvalds 4871da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->r1_numbuffs; ++i) { 4881da177e4SLinus Torvalds lbufd_index += 2; 4891da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 4901da177e4SLinus Torvalds 4911da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 4921da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 4931da177e4SLinus Torvalds 4941da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 4951da177e4SLinus Torvalds lbuf_count = 0; 4961da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 4971da177e4SLinus Torvalds } 4981da177e4SLinus Torvalds lbm_offset += 4; 4991da177e4SLinus Torvalds } 5001da177e4SLinus Torvalds 5011da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 2, RLBF1_T); 5021da177e4SLinus Torvalds he_writel(he_dev, he_dev->r1_numbuffs, RLBF1_C); 5031da177e4SLinus Torvalds } 5041da177e4SLinus Torvalds 5056c44512dSGreg Kroah-Hartman static void he_init_tx_lbfp(struct he_dev *he_dev) 5061da177e4SLinus Torvalds { 5071da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 5081da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 5091da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 5101da177e4SLinus Torvalds unsigned row_offset = he_dev->tx_startrow * he_dev->bytes_per_row; 5111da177e4SLinus Torvalds 5121da177e4SLinus Torvalds lbufd_index = he_dev->r0_numbuffs + he_dev->r1_numbuffs; 5131da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index); 5141da177e4SLinus Torvalds 5151da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, TLBF_H); 5161da177e4SLinus Torvalds 5171da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->tx_numbuffs; ++i) { 5181da177e4SLinus Torvalds lbufd_index += 1; 5191da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 5201da177e4SLinus Torvalds 5211da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 5221da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 5231da177e4SLinus Torvalds 5241da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 5251da177e4SLinus Torvalds lbuf_count = 0; 5261da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 5271da177e4SLinus Torvalds } 5281da177e4SLinus Torvalds lbm_offset += 2; 5291da177e4SLinus Torvalds } 5301da177e4SLinus Torvalds 5311da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 1, TLBF_T); 5321da177e4SLinus Torvalds } 5331da177e4SLinus Torvalds 5346c44512dSGreg Kroah-Hartman static int he_init_tpdrq(struct he_dev *he_dev) 5351da177e4SLinus Torvalds { 536ede58ef2Schas williams - CONTRACTOR he_dev->tpdrq_base = dma_zalloc_coherent(&he_dev->pci_dev->dev, 5376f2a011aSJoe Perches CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq), 538ede58ef2Schas williams - CONTRACTOR &he_dev->tpdrq_phys, GFP_KERNEL); 5391da177e4SLinus Torvalds if (he_dev->tpdrq_base == NULL) { 5401da177e4SLinus Torvalds hprintk("failed to alloc tpdrq\n"); 5411da177e4SLinus Torvalds return -ENOMEM; 5421da177e4SLinus Torvalds } 5431da177e4SLinus Torvalds 5441da177e4SLinus Torvalds he_dev->tpdrq_tail = he_dev->tpdrq_base; 5451da177e4SLinus Torvalds he_dev->tpdrq_head = he_dev->tpdrq_base; 5461da177e4SLinus Torvalds 5471da177e4SLinus Torvalds he_writel(he_dev, he_dev->tpdrq_phys, TPDRQ_B_H); 5481da177e4SLinus Torvalds he_writel(he_dev, 0, TPDRQ_T); 5491da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TPDRQ_SIZE - 1, TPDRQ_S); 5501da177e4SLinus Torvalds 5511da177e4SLinus Torvalds return 0; 5521da177e4SLinus Torvalds } 5531da177e4SLinus Torvalds 5546c44512dSGreg Kroah-Hartman static void he_init_cs_block(struct he_dev *he_dev) 5551da177e4SLinus Torvalds { 5561da177e4SLinus Torvalds unsigned clock, rate, delta; 5571da177e4SLinus Torvalds int reg; 5581da177e4SLinus Torvalds 5591da177e4SLinus Torvalds /* 5.1.7 cs block initialization */ 5601da177e4SLinus Torvalds 5611da177e4SLinus Torvalds for (reg = 0; reg < 0x20; ++reg) 5621da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0, CS_STTIM0 + reg); 5631da177e4SLinus Torvalds 5641da177e4SLinus Torvalds /* rate grid timer reload values */ 5651da177e4SLinus Torvalds 5661da177e4SLinus Torvalds clock = he_is622(he_dev) ? 66667000 : 50000000; 5671da177e4SLinus Torvalds rate = he_dev->atm_dev->link_rate; 5681da177e4SLinus Torvalds delta = rate / 16 / 2; 5691da177e4SLinus Torvalds 5701da177e4SLinus Torvalds for (reg = 0; reg < 0x10; ++reg) { 5711da177e4SLinus Torvalds /* 2.4 internal transmit function 5721da177e4SLinus Torvalds * 5731da177e4SLinus Torvalds * we initialize the first row in the rate grid. 5741da177e4SLinus Torvalds * values are period (in clock cycles) of timer 5751da177e4SLinus Torvalds */ 5761da177e4SLinus Torvalds unsigned period = clock / rate; 5771da177e4SLinus Torvalds 5781da177e4SLinus Torvalds he_writel_mbox(he_dev, period, CS_TGRLD0 + reg); 5791da177e4SLinus Torvalds rate -= delta; 5801da177e4SLinus Torvalds } 5811da177e4SLinus Torvalds 5821da177e4SLinus Torvalds if (he_is622(he_dev)) { 5831da177e4SLinus Torvalds /* table 5.2 (4 cells per lbuf) */ 5841da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000800fa, CS_ERTHR0); 5851da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000c33cb, CS_ERTHR1); 5861da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0010101b, CS_ERTHR2); 5871da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00181dac, CS_ERTHR3); 5881da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00280600, CS_ERTHR4); 5891da177e4SLinus Torvalds 5901da177e4SLinus Torvalds /* table 5.3, 5.4, 5.5, 5.6, 5.7 */ 5911da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x023de8b3, CS_ERCTL0); 5921da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1801, CS_ERCTL1); 5931da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_ERCTL2); 5941da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0); 5951da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_ERSTAT1); 5961da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x14585, CS_RTFWR); 5971da177e4SLinus Torvalds 5981da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4680, CS_RTATR); 5991da177e4SLinus Torvalds 6001da177e4SLinus Torvalds /* table 5.8 */ 6011da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00159ece, CS_TFBSET); 6021da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_WCRMAX); 6031da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5eb3, CS_WCRMIN); 6041da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xe8b3, CS_WCRINC); 6051da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xdeb3, CS_WCRDEC); 6061da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_WCRCEIL); 6071da177e4SLinus Torvalds 6081da177e4SLinus Torvalds /* table 5.9 */ 6091da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5, CS_OTPPER); 6101da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x14, CS_OTWPER); 6111da177e4SLinus Torvalds } else { 6121da177e4SLinus Torvalds /* table 5.1 (4 cells per lbuf) */ 6131da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000400ea, CS_ERTHR0); 6141da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00063388, CS_ERTHR1); 6151da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00081018, CS_ERTHR2); 6161da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000c1dac, CS_ERTHR3); 6171da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0014051a, CS_ERTHR4); 6181da177e4SLinus Torvalds 6191da177e4SLinus Torvalds /* table 5.3, 5.4, 5.5, 5.6, 5.7 */ 6201da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0235e4b1, CS_ERCTL0); 6211da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4701, CS_ERCTL1); 6221da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_ERCTL2); 6231da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0); 6241da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_ERSTAT1); 6251da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xf424, CS_RTFWR); 6261da177e4SLinus Torvalds 6271da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4680, CS_RTATR); 6281da177e4SLinus Torvalds 6291da177e4SLinus Torvalds /* table 5.8 */ 6301da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000563b7, CS_TFBSET); 6311da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_WCRMAX); 6321da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5ab1, CS_WCRMIN); 6331da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xe4b1, CS_WCRINC); 6341da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xdab1, CS_WCRDEC); 6351da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_WCRCEIL); 6361da177e4SLinus Torvalds 6371da177e4SLinus Torvalds /* table 5.9 */ 6381da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x6, CS_OTPPER); 6391da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1e, CS_OTWPER); 6401da177e4SLinus Torvalds } 6411da177e4SLinus Torvalds 6421da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x8, CS_OTTLIM); 6431da177e4SLinus Torvalds 6441da177e4SLinus Torvalds for (reg = 0; reg < 0x8; ++reg) 6451da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0, CS_HGRRT0 + reg); 6461da177e4SLinus Torvalds 6471da177e4SLinus Torvalds } 6481da177e4SLinus Torvalds 6496c44512dSGreg Kroah-Hartman static int he_init_cs_block_rcm(struct he_dev *he_dev) 6501da177e4SLinus Torvalds { 6511da177e4SLinus Torvalds unsigned (*rategrid)[16][16]; 6521da177e4SLinus Torvalds unsigned rate, delta; 6531da177e4SLinus Torvalds int i, j, reg; 6541da177e4SLinus Torvalds 6551da177e4SLinus Torvalds unsigned rate_atmf, exp, man; 6561da177e4SLinus Torvalds unsigned long long rate_cps; 6571da177e4SLinus Torvalds int mult, buf, buf_limit = 4; 6581da177e4SLinus Torvalds 6591da177e4SLinus Torvalds rategrid = kmalloc( sizeof(unsigned) * 16 * 16, GFP_KERNEL); 6601da177e4SLinus Torvalds if (!rategrid) 6611da177e4SLinus Torvalds return -ENOMEM; 6621da177e4SLinus Torvalds 6631da177e4SLinus Torvalds /* initialize rate grid group table */ 6641da177e4SLinus Torvalds 6651da177e4SLinus Torvalds for (reg = 0x0; reg < 0xff; ++reg) 6661da177e4SLinus Torvalds he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg); 6671da177e4SLinus Torvalds 6681da177e4SLinus Torvalds /* initialize rate controller groups */ 6691da177e4SLinus Torvalds 6701da177e4SLinus Torvalds for (reg = 0x100; reg < 0x1ff; ++reg) 6711da177e4SLinus Torvalds he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg); 6721da177e4SLinus Torvalds 6731da177e4SLinus Torvalds /* initialize tNrm lookup table */ 6741da177e4SLinus Torvalds 6751da177e4SLinus Torvalds /* the manual makes reference to a routine in a sample driver 6761da177e4SLinus Torvalds for proper configuration; fortunately, we only need this 6771da177e4SLinus Torvalds in order to support abr connection */ 6781da177e4SLinus Torvalds 6791da177e4SLinus Torvalds /* initialize rate to group table */ 6801da177e4SLinus Torvalds 6811da177e4SLinus Torvalds rate = he_dev->atm_dev->link_rate; 6821da177e4SLinus Torvalds delta = rate / 32; 6831da177e4SLinus Torvalds 6841da177e4SLinus Torvalds /* 6851da177e4SLinus Torvalds * 2.4 transmit internal functions 6861da177e4SLinus Torvalds * 6871da177e4SLinus Torvalds * we construct a copy of the rate grid used by the scheduler 6881da177e4SLinus Torvalds * in order to construct the rate to group table below 6891da177e4SLinus Torvalds */ 6901da177e4SLinus Torvalds 6911da177e4SLinus Torvalds for (j = 0; j < 16; j++) { 6921da177e4SLinus Torvalds (*rategrid)[0][j] = rate; 6931da177e4SLinus Torvalds rate -= delta; 6941da177e4SLinus Torvalds } 6951da177e4SLinus Torvalds 6961da177e4SLinus Torvalds for (i = 1; i < 16; i++) 6971da177e4SLinus Torvalds for (j = 0; j < 16; j++) 6981da177e4SLinus Torvalds if (i > 14) 6991da177e4SLinus Torvalds (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 4; 7001da177e4SLinus Torvalds else 7011da177e4SLinus Torvalds (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 2; 7021da177e4SLinus Torvalds 7031da177e4SLinus Torvalds /* 7041da177e4SLinus Torvalds * 2.4 transmit internal function 7051da177e4SLinus Torvalds * 7061da177e4SLinus Torvalds * this table maps the upper 5 bits of exponent and mantissa 7071da177e4SLinus Torvalds * of the atm forum representation of the rate into an index 7081da177e4SLinus Torvalds * on rate grid 7091da177e4SLinus Torvalds */ 7101da177e4SLinus Torvalds 7111da177e4SLinus Torvalds rate_atmf = 0; 7121da177e4SLinus Torvalds while (rate_atmf < 0x400) { 7131da177e4SLinus Torvalds man = (rate_atmf & 0x1f) << 4; 7141da177e4SLinus Torvalds exp = rate_atmf >> 5; 7151da177e4SLinus Torvalds 7161da177e4SLinus Torvalds /* 7171da177e4SLinus Torvalds instead of '/ 512', use '>> 9' to prevent a call 7181da177e4SLinus Torvalds to divdu3 on x86 platforms 7191da177e4SLinus Torvalds */ 7201da177e4SLinus Torvalds rate_cps = (unsigned long long) (1 << exp) * (man + 512) >> 9; 7211da177e4SLinus Torvalds 7221da177e4SLinus Torvalds if (rate_cps < 10) 7231da177e4SLinus Torvalds rate_cps = 10; /* 2.2.1 minimum payload rate is 10 cps */ 7241da177e4SLinus Torvalds 7251da177e4SLinus Torvalds for (i = 255; i > 0; i--) 7261da177e4SLinus Torvalds if ((*rategrid)[i/16][i%16] >= rate_cps) 7271da177e4SLinus Torvalds break; /* pick nearest rate instead? */ 7281da177e4SLinus Torvalds 7291da177e4SLinus Torvalds /* 7301da177e4SLinus Torvalds * each table entry is 16 bits: (rate grid index (8 bits) 7311da177e4SLinus Torvalds * and a buffer limit (8 bits) 7321da177e4SLinus Torvalds * there are two table entries in each 32-bit register 7331da177e4SLinus Torvalds */ 7341da177e4SLinus Torvalds 7351da177e4SLinus Torvalds #ifdef notdef 7361da177e4SLinus Torvalds buf = rate_cps * he_dev->tx_numbuffs / 7371da177e4SLinus Torvalds (he_dev->atm_dev->link_rate * 2); 7381da177e4SLinus Torvalds #else 7391da177e4SLinus Torvalds /* this is pretty, but avoids _divdu3 and is mostly correct */ 7401da177e4SLinus Torvalds mult = he_dev->atm_dev->link_rate / ATM_OC3_PCR; 7411da177e4SLinus Torvalds if (rate_cps > (272 * mult)) 7421da177e4SLinus Torvalds buf = 4; 7431da177e4SLinus Torvalds else if (rate_cps > (204 * mult)) 7441da177e4SLinus Torvalds buf = 3; 7451da177e4SLinus Torvalds else if (rate_cps > (136 * mult)) 7461da177e4SLinus Torvalds buf = 2; 7471da177e4SLinus Torvalds else if (rate_cps > (68 * mult)) 7481da177e4SLinus Torvalds buf = 1; 7491da177e4SLinus Torvalds else 7501da177e4SLinus Torvalds buf = 0; 7511da177e4SLinus Torvalds #endif 7521da177e4SLinus Torvalds if (buf > buf_limit) 7531da177e4SLinus Torvalds buf = buf_limit; 7541da177e4SLinus Torvalds reg = (reg << 16) | ((i << 8) | buf); 7551da177e4SLinus Torvalds 7561da177e4SLinus Torvalds #define RTGTBL_OFFSET 0x400 7571da177e4SLinus Torvalds 7581da177e4SLinus Torvalds if (rate_atmf & 0x1) 7591da177e4SLinus Torvalds he_writel_rcm(he_dev, reg, 7601da177e4SLinus Torvalds CONFIG_RCMABR + RTGTBL_OFFSET + (rate_atmf >> 1)); 7611da177e4SLinus Torvalds 7621da177e4SLinus Torvalds ++rate_atmf; 7631da177e4SLinus Torvalds } 7641da177e4SLinus Torvalds 7651da177e4SLinus Torvalds kfree(rategrid); 7661da177e4SLinus Torvalds return 0; 7671da177e4SLinus Torvalds } 7681da177e4SLinus Torvalds 7696c44512dSGreg Kroah-Hartman static int he_init_group(struct he_dev *he_dev, int group) 7701da177e4SLinus Torvalds { 771e623d625Schas williams - CONTRACTOR struct he_buff *heb, *next; 772e623d625Schas williams - CONTRACTOR dma_addr_t mapping; 7731da177e4SLinus Torvalds int i; 7741da177e4SLinus Torvalds 7751d927870Schas williams - CONTRACTOR he_writel(he_dev, 0x0, G0_RBPS_S + (group * 32)); 7761d927870Schas williams - CONTRACTOR he_writel(he_dev, 0x0, G0_RBPS_T + (group * 32)); 7771d927870Schas williams - CONTRACTOR he_writel(he_dev, 0x0, G0_RBPS_QI + (group * 32)); 7781d927870Schas williams - CONTRACTOR he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 7791da177e4SLinus Torvalds G0_RBPS_BS + (group * 32)); 7801da177e4SLinus Torvalds 781e623d625Schas williams - CONTRACTOR /* bitmap table */ 782e623d625Schas williams - CONTRACTOR he_dev->rbpl_table = kmalloc(BITS_TO_LONGS(RBPL_TABLE_SIZE) 783e623d625Schas williams - CONTRACTOR * sizeof(unsigned long), GFP_KERNEL); 784e623d625Schas williams - CONTRACTOR if (!he_dev->rbpl_table) { 785e623d625Schas williams - CONTRACTOR hprintk("unable to allocate rbpl bitmap table\n"); 786e623d625Schas williams - CONTRACTOR return -ENOMEM; 787e623d625Schas williams - CONTRACTOR } 788e623d625Schas williams - CONTRACTOR bitmap_zero(he_dev->rbpl_table, RBPL_TABLE_SIZE); 789e623d625Schas williams - CONTRACTOR 790e623d625Schas williams - CONTRACTOR /* rbpl_virt 64-bit pointers */ 791e623d625Schas williams - CONTRACTOR he_dev->rbpl_virt = kmalloc(RBPL_TABLE_SIZE 792e623d625Schas williams - CONTRACTOR * sizeof(struct he_buff *), GFP_KERNEL); 793e623d625Schas williams - CONTRACTOR if (!he_dev->rbpl_virt) { 794e623d625Schas williams - CONTRACTOR hprintk("unable to allocate rbpl virt table\n"); 795e623d625Schas williams - CONTRACTOR goto out_free_rbpl_table; 796e623d625Schas williams - CONTRACTOR } 797e623d625Schas williams - CONTRACTOR 7981da177e4SLinus Torvalds /* large buffer pool */ 799ede58ef2Schas williams - CONTRACTOR he_dev->rbpl_pool = dma_pool_create("rbpl", &he_dev->pci_dev->dev, 800e623d625Schas williams - CONTRACTOR CONFIG_RBPL_BUFSIZE, 64, 0); 8011da177e4SLinus Torvalds if (he_dev->rbpl_pool == NULL) { 8021da177e4SLinus Torvalds hprintk("unable to create rbpl pool\n"); 803e623d625Schas williams - CONTRACTOR goto out_free_rbpl_virt; 8041da177e4SLinus Torvalds } 8051da177e4SLinus Torvalds 806ede58ef2Schas williams - CONTRACTOR he_dev->rbpl_base = dma_zalloc_coherent(&he_dev->pci_dev->dev, 8076f2a011aSJoe Perches CONFIG_RBPL_SIZE * sizeof(struct he_rbp), 808ede58ef2Schas williams - CONTRACTOR &he_dev->rbpl_phys, GFP_KERNEL); 8091da177e4SLinus Torvalds if (he_dev->rbpl_base == NULL) { 8105d5baa92Sroel kluin hprintk("failed to alloc rbpl_base\n"); 8115d5baa92Sroel kluin goto out_destroy_rbpl_pool; 8121da177e4SLinus Torvalds } 813e623d625Schas williams - CONTRACTOR 814e623d625Schas williams - CONTRACTOR INIT_LIST_HEAD(&he_dev->rbpl_outstanding); 8151da177e4SLinus Torvalds 8161da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPL_SIZE; ++i) { 8171da177e4SLinus Torvalds 818ede58ef2Schas williams - CONTRACTOR heb = dma_pool_alloc(he_dev->rbpl_pool, GFP_KERNEL, &mapping); 819e623d625Schas williams - CONTRACTOR if (!heb) 820e623d625Schas williams - CONTRACTOR goto out_free_rbpl; 821e623d625Schas williams - CONTRACTOR heb->mapping = mapping; 822e623d625Schas williams - CONTRACTOR list_add(&heb->entry, &he_dev->rbpl_outstanding); 8231da177e4SLinus Torvalds 824e623d625Schas williams - CONTRACTOR set_bit(i, he_dev->rbpl_table); 825e623d625Schas williams - CONTRACTOR he_dev->rbpl_virt[i] = heb; 826e623d625Schas williams - CONTRACTOR he_dev->rbpl_hint = i + 1; 827e623d625Schas williams - CONTRACTOR he_dev->rbpl_base[i].idx = i << RBP_IDX_OFFSET; 828e623d625Schas williams - CONTRACTOR he_dev->rbpl_base[i].phys = mapping + offsetof(struct he_buff, data); 8291da177e4SLinus Torvalds } 8301da177e4SLinus Torvalds he_dev->rbpl_tail = &he_dev->rbpl_base[CONFIG_RBPL_SIZE - 1]; 8311da177e4SLinus Torvalds 8321da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbpl_phys, G0_RBPL_S + (group * 32)); 8331da177e4SLinus Torvalds he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), 8341da177e4SLinus Torvalds G0_RBPL_T + (group * 32)); 835e623d625Schas williams - CONTRACTOR he_writel(he_dev, (CONFIG_RBPL_BUFSIZE - sizeof(struct he_buff))/4, 8361da177e4SLinus Torvalds G0_RBPL_BS + (group * 32)); 8371da177e4SLinus Torvalds he_writel(he_dev, 8381da177e4SLinus Torvalds RBP_THRESH(CONFIG_RBPL_THRESH) | 8391da177e4SLinus Torvalds RBP_QSIZE(CONFIG_RBPL_SIZE - 1) | 8401da177e4SLinus Torvalds RBP_INT_ENB, 8411da177e4SLinus Torvalds G0_RBPL_QI + (group * 32)); 8421da177e4SLinus Torvalds 8431da177e4SLinus Torvalds /* rx buffer ready queue */ 8441da177e4SLinus Torvalds 845ede58ef2Schas williams - CONTRACTOR he_dev->rbrq_base = dma_zalloc_coherent(&he_dev->pci_dev->dev, 8466f2a011aSJoe Perches CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), 847ede58ef2Schas williams - CONTRACTOR &he_dev->rbrq_phys, GFP_KERNEL); 8481da177e4SLinus Torvalds if (he_dev->rbrq_base == NULL) { 8491da177e4SLinus Torvalds hprintk("failed to allocate rbrq\n"); 850e623d625Schas williams - CONTRACTOR goto out_free_rbpl; 8511da177e4SLinus Torvalds } 8521da177e4SLinus Torvalds 8531da177e4SLinus Torvalds he_dev->rbrq_head = he_dev->rbrq_base; 8541da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbrq_phys, G0_RBRQ_ST + (group * 16)); 8551da177e4SLinus Torvalds he_writel(he_dev, 0, G0_RBRQ_H + (group * 16)); 8561da177e4SLinus Torvalds he_writel(he_dev, 8571da177e4SLinus Torvalds RBRQ_THRESH(CONFIG_RBRQ_THRESH) | RBRQ_SIZE(CONFIG_RBRQ_SIZE - 1), 8581da177e4SLinus Torvalds G0_RBRQ_Q + (group * 16)); 8591da177e4SLinus Torvalds if (irq_coalesce) { 8601da177e4SLinus Torvalds hprintk("coalescing interrupts\n"); 8611da177e4SLinus Torvalds he_writel(he_dev, RBRQ_TIME(768) | RBRQ_COUNT(7), 8621da177e4SLinus Torvalds G0_RBRQ_I + (group * 16)); 8631da177e4SLinus Torvalds } else 8641da177e4SLinus Torvalds he_writel(he_dev, RBRQ_TIME(0) | RBRQ_COUNT(1), 8651da177e4SLinus Torvalds G0_RBRQ_I + (group * 16)); 8661da177e4SLinus Torvalds 8671da177e4SLinus Torvalds /* tx buffer ready queue */ 8681da177e4SLinus Torvalds 869ede58ef2Schas williams - CONTRACTOR he_dev->tbrq_base = dma_zalloc_coherent(&he_dev->pci_dev->dev, 8706f2a011aSJoe Perches CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), 871ede58ef2Schas williams - CONTRACTOR &he_dev->tbrq_phys, GFP_KERNEL); 8721da177e4SLinus Torvalds if (he_dev->tbrq_base == NULL) { 8731da177e4SLinus Torvalds hprintk("failed to allocate tbrq\n"); 8745d5baa92Sroel kluin goto out_free_rbpq_base; 8751da177e4SLinus Torvalds } 8761da177e4SLinus Torvalds 8771da177e4SLinus Torvalds he_dev->tbrq_head = he_dev->tbrq_base; 8781da177e4SLinus Torvalds 8791da177e4SLinus Torvalds he_writel(he_dev, he_dev->tbrq_phys, G0_TBRQ_B_T + (group * 16)); 8801da177e4SLinus Torvalds he_writel(he_dev, 0, G0_TBRQ_H + (group * 16)); 8811da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TBRQ_SIZE - 1, G0_TBRQ_S + (group * 16)); 8821da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TBRQ_THRESH, G0_TBRQ_THRESH + (group * 16)); 8831da177e4SLinus Torvalds 8841da177e4SLinus Torvalds return 0; 8855d5baa92Sroel kluin 8865d5baa92Sroel kluin out_free_rbpq_base: 887ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&he_dev->pci_dev->dev, CONFIG_RBRQ_SIZE * 8885d5baa92Sroel kluin sizeof(struct he_rbrq), he_dev->rbrq_base, 8895d5baa92Sroel kluin he_dev->rbrq_phys); 890e623d625Schas williams - CONTRACTOR out_free_rbpl: 891e623d625Schas williams - CONTRACTOR list_for_each_entry_safe(heb, next, &he_dev->rbpl_outstanding, entry) 892ede58ef2Schas williams - CONTRACTOR dma_pool_free(he_dev->rbpl_pool, heb, heb->mapping); 8935d5baa92Sroel kluin 894ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&he_dev->pci_dev->dev, CONFIG_RBPL_SIZE * 8955d5baa92Sroel kluin sizeof(struct he_rbp), he_dev->rbpl_base, 8965d5baa92Sroel kluin he_dev->rbpl_phys); 8975d5baa92Sroel kluin out_destroy_rbpl_pool: 898ede58ef2Schas williams - CONTRACTOR dma_pool_destroy(he_dev->rbpl_pool); 899e623d625Schas williams - CONTRACTOR out_free_rbpl_virt: 900e623d625Schas williams - CONTRACTOR kfree(he_dev->rbpl_virt); 901e623d625Schas williams - CONTRACTOR out_free_rbpl_table: 902e623d625Schas williams - CONTRACTOR kfree(he_dev->rbpl_table); 9035d5baa92Sroel kluin 9045d5baa92Sroel kluin return -ENOMEM; 9051da177e4SLinus Torvalds } 9061da177e4SLinus Torvalds 9076c44512dSGreg Kroah-Hartman static int he_init_irq(struct he_dev *he_dev) 9081da177e4SLinus Torvalds { 9091da177e4SLinus Torvalds int i; 9101da177e4SLinus Torvalds 9111da177e4SLinus Torvalds /* 2.9.3.5 tail offset for each interrupt queue is located after the 9121da177e4SLinus Torvalds end of the interrupt queue */ 9131da177e4SLinus Torvalds 914ede58ef2Schas williams - CONTRACTOR he_dev->irq_base = dma_zalloc_coherent(&he_dev->pci_dev->dev, 915ede58ef2Schas williams - CONTRACTOR (CONFIG_IRQ_SIZE + 1) 916ede58ef2Schas williams - CONTRACTOR * sizeof(struct he_irq), 917ede58ef2Schas williams - CONTRACTOR &he_dev->irq_phys, 918ede58ef2Schas williams - CONTRACTOR GFP_KERNEL); 9191da177e4SLinus Torvalds if (he_dev->irq_base == NULL) { 9201da177e4SLinus Torvalds hprintk("failed to allocate irq\n"); 9211da177e4SLinus Torvalds return -ENOMEM; 9221da177e4SLinus Torvalds } 9231da177e4SLinus Torvalds he_dev->irq_tailoffset = (unsigned *) 9241da177e4SLinus Torvalds &he_dev->irq_base[CONFIG_IRQ_SIZE]; 9251da177e4SLinus Torvalds *he_dev->irq_tailoffset = 0; 9261da177e4SLinus Torvalds he_dev->irq_head = he_dev->irq_base; 9271da177e4SLinus Torvalds he_dev->irq_tail = he_dev->irq_base; 9281da177e4SLinus Torvalds 9291da177e4SLinus Torvalds for (i = 0; i < CONFIG_IRQ_SIZE; ++i) 9301da177e4SLinus Torvalds he_dev->irq_base[i].isw = ITYPE_INVALID; 9311da177e4SLinus Torvalds 9321da177e4SLinus Torvalds he_writel(he_dev, he_dev->irq_phys, IRQ0_BASE); 9331da177e4SLinus Torvalds he_writel(he_dev, 9341da177e4SLinus Torvalds IRQ_SIZE(CONFIG_IRQ_SIZE) | IRQ_THRESH(CONFIG_IRQ_THRESH), 9351da177e4SLinus Torvalds IRQ0_HEAD); 9361da177e4SLinus Torvalds he_writel(he_dev, IRQ_INT_A | IRQ_TYPE_LINE, IRQ0_CNTL); 9371da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ0_DATA); 9381da177e4SLinus Torvalds 9391da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_BASE); 9401da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_HEAD); 9411da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_CNTL); 9421da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_DATA); 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_BASE); 9451da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_HEAD); 9461da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_CNTL); 9471da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_DATA); 9481da177e4SLinus Torvalds 9491da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_BASE); 9501da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_HEAD); 9511da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_CNTL); 9521da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_DATA); 9531da177e4SLinus Torvalds 9541da177e4SLinus Torvalds /* 2.9.3.2 interrupt queue mapping registers */ 9551da177e4SLinus Torvalds 9561da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_10_MAP); 9571da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_32_MAP); 9581da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_54_MAP); 9591da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_76_MAP); 9601da177e4SLinus Torvalds 96106df277aSchas williams - CONTRACTOR if (request_irq(he_dev->pci_dev->irq, 96206df277aSchas williams - CONTRACTOR he_irq_handler, IRQF_SHARED, DEV_LABEL, he_dev)) { 9631da177e4SLinus Torvalds hprintk("irq %d already in use\n", he_dev->pci_dev->irq); 9641da177e4SLinus Torvalds return -EINVAL; 9651da177e4SLinus Torvalds } 9661da177e4SLinus Torvalds 9671da177e4SLinus Torvalds he_dev->irq = he_dev->pci_dev->irq; 9681da177e4SLinus Torvalds 9691da177e4SLinus Torvalds return 0; 9701da177e4SLinus Torvalds } 9711da177e4SLinus Torvalds 9726c44512dSGreg Kroah-Hartman static int he_start(struct atm_dev *dev) 9731da177e4SLinus Torvalds { 9741da177e4SLinus Torvalds struct he_dev *he_dev; 9751da177e4SLinus Torvalds struct pci_dev *pci_dev; 9761da177e4SLinus Torvalds unsigned long membase; 9771da177e4SLinus Torvalds 9781da177e4SLinus Torvalds u16 command; 9791da177e4SLinus Torvalds u32 gen_cntl_0, host_cntl, lb_swap; 9801da177e4SLinus Torvalds u8 cache_size, timer; 9811da177e4SLinus Torvalds 9821da177e4SLinus Torvalds unsigned err; 9831da177e4SLinus Torvalds unsigned int status, reg; 9841da177e4SLinus Torvalds int i, group; 9851da177e4SLinus Torvalds 9861da177e4SLinus Torvalds he_dev = HE_DEV(dev); 9871da177e4SLinus Torvalds pci_dev = he_dev->pci_dev; 9881da177e4SLinus Torvalds 9891da177e4SLinus Torvalds membase = pci_resource_start(pci_dev, 0); 9901da177e4SLinus Torvalds HPRINTK("membase = 0x%lx irq = %d.\n", membase, pci_dev->irq); 9911da177e4SLinus Torvalds 9921da177e4SLinus Torvalds /* 9931da177e4SLinus Torvalds * pci bus controller initialization 9941da177e4SLinus Torvalds */ 9951da177e4SLinus Torvalds 9961da177e4SLinus Torvalds /* 4.3 pci bus controller-specific initialization */ 9971da177e4SLinus Torvalds if (pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0) != 0) { 9981da177e4SLinus Torvalds hprintk("can't read GEN_CNTL_0\n"); 9991da177e4SLinus Torvalds return -EINVAL; 10001da177e4SLinus Torvalds } 10011da177e4SLinus Torvalds gen_cntl_0 |= (MRL_ENB | MRM_ENB | IGNORE_TIMEOUT); 10021da177e4SLinus Torvalds if (pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0) != 0) { 10031da177e4SLinus Torvalds hprintk("can't write GEN_CNTL_0.\n"); 10041da177e4SLinus Torvalds return -EINVAL; 10051da177e4SLinus Torvalds } 10061da177e4SLinus Torvalds 10071da177e4SLinus Torvalds if (pci_read_config_word(pci_dev, PCI_COMMAND, &command) != 0) { 10081da177e4SLinus Torvalds hprintk("can't read PCI_COMMAND.\n"); 10091da177e4SLinus Torvalds return -EINVAL; 10101da177e4SLinus Torvalds } 10111da177e4SLinus Torvalds 10121da177e4SLinus Torvalds command |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE); 10131da177e4SLinus Torvalds if (pci_write_config_word(pci_dev, PCI_COMMAND, command) != 0) { 10141da177e4SLinus Torvalds hprintk("can't enable memory.\n"); 10151da177e4SLinus Torvalds return -EINVAL; 10161da177e4SLinus Torvalds } 10171da177e4SLinus Torvalds 10181da177e4SLinus Torvalds if (pci_read_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, &cache_size)) { 10191da177e4SLinus Torvalds hprintk("can't read cache line size?\n"); 10201da177e4SLinus Torvalds return -EINVAL; 10211da177e4SLinus Torvalds } 10221da177e4SLinus Torvalds 10231da177e4SLinus Torvalds if (cache_size < 16) { 10241da177e4SLinus Torvalds cache_size = 16; 10251da177e4SLinus Torvalds if (pci_write_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, cache_size)) 10261da177e4SLinus Torvalds hprintk("can't set cache line size to %d\n", cache_size); 10271da177e4SLinus Torvalds } 10281da177e4SLinus Torvalds 10291da177e4SLinus Torvalds if (pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &timer)) { 10301da177e4SLinus Torvalds hprintk("can't read latency timer?\n"); 10311da177e4SLinus Torvalds return -EINVAL; 10321da177e4SLinus Torvalds } 10331da177e4SLinus Torvalds 10341da177e4SLinus Torvalds /* from table 3.9 10351da177e4SLinus Torvalds * 10361da177e4SLinus Torvalds * LAT_TIMER = 1 + AVG_LAT + BURST_SIZE/BUS_SIZE 10371da177e4SLinus Torvalds * 10381da177e4SLinus Torvalds * AVG_LAT: The average first data read/write latency [maximum 16 clock cycles] 10391da177e4SLinus Torvalds * BURST_SIZE: 1536 bytes (read) for 622, 768 bytes (read) for 155 [192 clock cycles] 10401da177e4SLinus Torvalds * 10411da177e4SLinus Torvalds */ 10421da177e4SLinus Torvalds #define LAT_TIMER 209 10431da177e4SLinus Torvalds if (timer < LAT_TIMER) { 10441da177e4SLinus Torvalds HPRINTK("latency timer was %d, setting to %d\n", timer, LAT_TIMER); 10451da177e4SLinus Torvalds timer = LAT_TIMER; 10461da177e4SLinus Torvalds if (pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, timer)) 10471da177e4SLinus Torvalds hprintk("can't set latency timer to %d\n", timer); 10481da177e4SLinus Torvalds } 10491da177e4SLinus Torvalds 10501da177e4SLinus Torvalds if (!(he_dev->membase = ioremap(membase, HE_REGMAP_SIZE))) { 10511da177e4SLinus Torvalds hprintk("can't set up page mapping\n"); 10521da177e4SLinus Torvalds return -EINVAL; 10531da177e4SLinus Torvalds } 10541da177e4SLinus Torvalds 10551da177e4SLinus Torvalds /* 4.4 card reset */ 10561da177e4SLinus Torvalds he_writel(he_dev, 0x0, RESET_CNTL); 10571da177e4SLinus Torvalds he_writel(he_dev, 0xff, RESET_CNTL); 10581da177e4SLinus Torvalds 1059f0911aaeSArnd Bergmann msleep(16); /* 16 ms */ 10601da177e4SLinus Torvalds status = he_readl(he_dev, RESET_CNTL); 10611da177e4SLinus Torvalds if ((status & BOARD_RST_STATUS) == 0) { 10621da177e4SLinus Torvalds hprintk("reset failed\n"); 10631da177e4SLinus Torvalds return -EINVAL; 10641da177e4SLinus Torvalds } 10651da177e4SLinus Torvalds 10661da177e4SLinus Torvalds /* 4.5 set bus width */ 10671da177e4SLinus Torvalds host_cntl = he_readl(he_dev, HOST_CNTL); 10681da177e4SLinus Torvalds if (host_cntl & PCI_BUS_SIZE64) 10691da177e4SLinus Torvalds gen_cntl_0 |= ENBL_64; 10701da177e4SLinus Torvalds else 10711da177e4SLinus Torvalds gen_cntl_0 &= ~ENBL_64; 10721da177e4SLinus Torvalds 10731da177e4SLinus Torvalds if (disable64 == 1) { 10741da177e4SLinus Torvalds hprintk("disabling 64-bit pci bus transfers\n"); 10751da177e4SLinus Torvalds gen_cntl_0 &= ~ENBL_64; 10761da177e4SLinus Torvalds } 10771da177e4SLinus Torvalds 10781da177e4SLinus Torvalds if (gen_cntl_0 & ENBL_64) 10791da177e4SLinus Torvalds hprintk("64-bit transfers enabled\n"); 10801da177e4SLinus Torvalds 10811da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 10821da177e4SLinus Torvalds 10831da177e4SLinus Torvalds /* 4.7 read prom contents */ 10841da177e4SLinus Torvalds for (i = 0; i < PROD_ID_LEN; ++i) 10851da177e4SLinus Torvalds he_dev->prod_id[i] = read_prom_byte(he_dev, PROD_ID + i); 10861da177e4SLinus Torvalds 10871da177e4SLinus Torvalds he_dev->media = read_prom_byte(he_dev, MEDIA); 10881da177e4SLinus Torvalds 10891da177e4SLinus Torvalds for (i = 0; i < 6; ++i) 10901da177e4SLinus Torvalds dev->esi[i] = read_prom_byte(he_dev, MAC_ADDR + i); 10911da177e4SLinus Torvalds 1092f8de3104SAndy Shevchenko hprintk("%s%s, %pM\n", he_dev->prod_id, 1093f8de3104SAndy Shevchenko he_dev->media & 0x40 ? "SM" : "MM", dev->esi); 10941da177e4SLinus Torvalds he_dev->atm_dev->link_rate = he_is622(he_dev) ? 10951da177e4SLinus Torvalds ATM_OC12_PCR : ATM_OC3_PCR; 10961da177e4SLinus Torvalds 10971da177e4SLinus Torvalds /* 4.6 set host endianess */ 10981da177e4SLinus Torvalds lb_swap = he_readl(he_dev, LB_SWAP); 10991da177e4SLinus Torvalds if (he_is622(he_dev)) 11001da177e4SLinus Torvalds lb_swap &= ~XFER_SIZE; /* 4 cells */ 11011da177e4SLinus Torvalds else 11021da177e4SLinus Torvalds lb_swap |= XFER_SIZE; /* 8 cells */ 11031da177e4SLinus Torvalds #ifdef __BIG_ENDIAN 11041da177e4SLinus Torvalds lb_swap |= DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST; 11051da177e4SLinus Torvalds #else 11061da177e4SLinus Torvalds lb_swap &= ~(DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST | 11071da177e4SLinus Torvalds DATA_WR_SWAP | DATA_RD_SWAP | DESC_RD_SWAP); 11081da177e4SLinus Torvalds #endif /* __BIG_ENDIAN */ 11091da177e4SLinus Torvalds he_writel(he_dev, lb_swap, LB_SWAP); 11101da177e4SLinus Torvalds 11111da177e4SLinus Torvalds /* 4.8 sdram controller initialization */ 11121da177e4SLinus Torvalds he_writel(he_dev, he_is622(he_dev) ? LB_64_ENB : 0x0, SDRAM_CTL); 11131da177e4SLinus Torvalds 11141da177e4SLinus Torvalds /* 4.9 initialize rnum value */ 11151da177e4SLinus Torvalds lb_swap |= SWAP_RNUM_MAX(0xf); 11161da177e4SLinus Torvalds he_writel(he_dev, lb_swap, LB_SWAP); 11171da177e4SLinus Torvalds 11181da177e4SLinus Torvalds /* 4.10 initialize the interrupt queues */ 11191da177e4SLinus Torvalds if ((err = he_init_irq(he_dev)) != 0) 11201da177e4SLinus Torvalds return err; 11211da177e4SLinus Torvalds 11221da177e4SLinus Torvalds /* 4.11 enable pci bus controller state machines */ 11231da177e4SLinus Torvalds host_cntl |= (OUTFF_ENB | CMDFF_ENB | 11241da177e4SLinus Torvalds QUICK_RD_RETRY | QUICK_WR_RETRY | PERR_INT_ENB); 11251da177e4SLinus Torvalds he_writel(he_dev, host_cntl, HOST_CNTL); 11261da177e4SLinus Torvalds 11271da177e4SLinus Torvalds gen_cntl_0 |= INT_PROC_ENBL|INIT_ENB; 11281da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 11291da177e4SLinus Torvalds 11301da177e4SLinus Torvalds /* 11311da177e4SLinus Torvalds * atm network controller initialization 11321da177e4SLinus Torvalds */ 11331da177e4SLinus Torvalds 11341da177e4SLinus Torvalds /* 5.1.1 generic configuration state */ 11351da177e4SLinus Torvalds 11361da177e4SLinus Torvalds /* 11371da177e4SLinus Torvalds * local (cell) buffer memory map 11381da177e4SLinus Torvalds * 11391da177e4SLinus Torvalds * HE155 HE622 11401da177e4SLinus Torvalds * 11411da177e4SLinus Torvalds * 0 ____________1023 bytes 0 _______________________2047 bytes 11421da177e4SLinus Torvalds * | | | | | 11431da177e4SLinus Torvalds * | utility | | rx0 | | 11441da177e4SLinus Torvalds * 5|____________| 255|___________________| u | 11451da177e4SLinus Torvalds * 6| | 256| | t | 11461da177e4SLinus Torvalds * | | | | i | 11471da177e4SLinus Torvalds * | rx0 | row | tx | l | 11481da177e4SLinus Torvalds * | | | | i | 11491da177e4SLinus Torvalds * | | 767|___________________| t | 11501da177e4SLinus Torvalds * 517|____________| 768| | y | 11511da177e4SLinus Torvalds * row 518| | | rx1 | | 11521da177e4SLinus Torvalds * | | 1023|___________________|___| 11531da177e4SLinus Torvalds * | | 11541da177e4SLinus Torvalds * | tx | 11551da177e4SLinus Torvalds * | | 11561da177e4SLinus Torvalds * | | 11571da177e4SLinus Torvalds * 1535|____________| 11581da177e4SLinus Torvalds * 1536| | 11591da177e4SLinus Torvalds * | rx1 | 11601da177e4SLinus Torvalds * 2047|____________| 11611da177e4SLinus Torvalds * 11621da177e4SLinus Torvalds */ 11631da177e4SLinus Torvalds 11641da177e4SLinus Torvalds /* total 4096 connections */ 11651da177e4SLinus Torvalds he_dev->vcibits = CONFIG_DEFAULT_VCIBITS; 11661da177e4SLinus Torvalds he_dev->vpibits = CONFIG_DEFAULT_VPIBITS; 11671da177e4SLinus Torvalds 11681da177e4SLinus Torvalds if (nvpibits != -1 && nvcibits != -1 && nvpibits+nvcibits != HE_MAXCIDBITS) { 11691da177e4SLinus Torvalds hprintk("nvpibits + nvcibits != %d\n", HE_MAXCIDBITS); 11701da177e4SLinus Torvalds return -ENODEV; 11711da177e4SLinus Torvalds } 11721da177e4SLinus Torvalds 11731da177e4SLinus Torvalds if (nvpibits != -1) { 11741da177e4SLinus Torvalds he_dev->vpibits = nvpibits; 11751da177e4SLinus Torvalds he_dev->vcibits = HE_MAXCIDBITS - nvpibits; 11761da177e4SLinus Torvalds } 11771da177e4SLinus Torvalds 11781da177e4SLinus Torvalds if (nvcibits != -1) { 11791da177e4SLinus Torvalds he_dev->vcibits = nvcibits; 11801da177e4SLinus Torvalds he_dev->vpibits = HE_MAXCIDBITS - nvcibits; 11811da177e4SLinus Torvalds } 11821da177e4SLinus Torvalds 11831da177e4SLinus Torvalds 11841da177e4SLinus Torvalds if (he_is622(he_dev)) { 11851da177e4SLinus Torvalds he_dev->cells_per_row = 40; 11861da177e4SLinus Torvalds he_dev->bytes_per_row = 2048; 11871da177e4SLinus Torvalds he_dev->r0_numrows = 256; 11881da177e4SLinus Torvalds he_dev->tx_numrows = 512; 11891da177e4SLinus Torvalds he_dev->r1_numrows = 256; 11901da177e4SLinus Torvalds he_dev->r0_startrow = 0; 11911da177e4SLinus Torvalds he_dev->tx_startrow = 256; 11921da177e4SLinus Torvalds he_dev->r1_startrow = 768; 11931da177e4SLinus Torvalds } else { 11941da177e4SLinus Torvalds he_dev->cells_per_row = 20; 11951da177e4SLinus Torvalds he_dev->bytes_per_row = 1024; 11961da177e4SLinus Torvalds he_dev->r0_numrows = 512; 11971da177e4SLinus Torvalds he_dev->tx_numrows = 1018; 11981da177e4SLinus Torvalds he_dev->r1_numrows = 512; 11991da177e4SLinus Torvalds he_dev->r0_startrow = 6; 12001da177e4SLinus Torvalds he_dev->tx_startrow = 518; 12011da177e4SLinus Torvalds he_dev->r1_startrow = 1536; 12021da177e4SLinus Torvalds } 12031da177e4SLinus Torvalds 12041da177e4SLinus Torvalds he_dev->cells_per_lbuf = 4; 12051da177e4SLinus Torvalds he_dev->buffer_limit = 4; 12061da177e4SLinus Torvalds he_dev->r0_numbuffs = he_dev->r0_numrows * 12071da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12081da177e4SLinus Torvalds if (he_dev->r0_numbuffs > 2560) 12091da177e4SLinus Torvalds he_dev->r0_numbuffs = 2560; 12101da177e4SLinus Torvalds 12111da177e4SLinus Torvalds he_dev->r1_numbuffs = he_dev->r1_numrows * 12121da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12131da177e4SLinus Torvalds if (he_dev->r1_numbuffs > 2560) 12141da177e4SLinus Torvalds he_dev->r1_numbuffs = 2560; 12151da177e4SLinus Torvalds 12161da177e4SLinus Torvalds he_dev->tx_numbuffs = he_dev->tx_numrows * 12171da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12181da177e4SLinus Torvalds if (he_dev->tx_numbuffs > 5120) 12191da177e4SLinus Torvalds he_dev->tx_numbuffs = 5120; 12201da177e4SLinus Torvalds 12211da177e4SLinus Torvalds /* 5.1.2 configure hardware dependent registers */ 12221da177e4SLinus Torvalds 12231da177e4SLinus Torvalds he_writel(he_dev, 12241da177e4SLinus Torvalds SLICE_X(0x2) | ARB_RNUM_MAX(0xf) | TH_PRTY(0x3) | 12251da177e4SLinus Torvalds RH_PRTY(0x3) | TL_PRTY(0x2) | RL_PRTY(0x1) | 12261da177e4SLinus Torvalds (he_is622(he_dev) ? BUS_MULTI(0x28) : BUS_MULTI(0x46)) | 12271da177e4SLinus Torvalds (he_is622(he_dev) ? NET_PREF(0x50) : NET_PREF(0x8c)), 12281da177e4SLinus Torvalds LBARB); 12291da177e4SLinus Torvalds 12301da177e4SLinus Torvalds he_writel(he_dev, BANK_ON | 12311da177e4SLinus Torvalds (he_is622(he_dev) ? (REF_RATE(0x384) | WIDE_DATA) : REF_RATE(0x150)), 12321da177e4SLinus Torvalds SDRAMCON); 12331da177e4SLinus Torvalds 12341da177e4SLinus Torvalds he_writel(he_dev, 12351da177e4SLinus Torvalds (he_is622(he_dev) ? RM_BANK_WAIT(1) : RM_BANK_WAIT(0)) | 12361da177e4SLinus Torvalds RM_RW_WAIT(1), RCMCONFIG); 12371da177e4SLinus Torvalds he_writel(he_dev, 12381da177e4SLinus Torvalds (he_is622(he_dev) ? TM_BANK_WAIT(2) : TM_BANK_WAIT(1)) | 12391da177e4SLinus Torvalds TM_RW_WAIT(1), TCMCONFIG); 12401da177e4SLinus Torvalds 12411da177e4SLinus Torvalds he_writel(he_dev, he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD, LB_CONFIG); 12421da177e4SLinus Torvalds 12431da177e4SLinus Torvalds he_writel(he_dev, 12441da177e4SLinus Torvalds (he_is622(he_dev) ? UT_RD_DELAY(8) : UT_RD_DELAY(0)) | 12451da177e4SLinus Torvalds (he_is622(he_dev) ? RC_UT_MODE(0) : RC_UT_MODE(1)) | 12461da177e4SLinus Torvalds RX_VALVP(he_dev->vpibits) | 12471da177e4SLinus Torvalds RX_VALVC(he_dev->vcibits), RC_CONFIG); 12481da177e4SLinus Torvalds 12491da177e4SLinus Torvalds he_writel(he_dev, DRF_THRESH(0x20) | 12501da177e4SLinus Torvalds (he_is622(he_dev) ? TX_UT_MODE(0) : TX_UT_MODE(1)) | 12511da177e4SLinus Torvalds TX_VCI_MASK(he_dev->vcibits) | 12521da177e4SLinus Torvalds LBFREE_CNT(he_dev->tx_numbuffs), TX_CONFIG); 12531da177e4SLinus Torvalds 12541da177e4SLinus Torvalds he_writel(he_dev, 0x0, TXAAL5_PROTO); 12551da177e4SLinus Torvalds 12561da177e4SLinus Torvalds he_writel(he_dev, PHY_INT_ENB | 12571da177e4SLinus Torvalds (he_is622(he_dev) ? PTMR_PRE(67 - 1) : PTMR_PRE(50 - 1)), 12581da177e4SLinus Torvalds RH_CONFIG); 12591da177e4SLinus Torvalds 12601da177e4SLinus Torvalds /* 5.1.3 initialize connection memory */ 12611da177e4SLinus Torvalds 12621da177e4SLinus Torvalds for (i = 0; i < TCM_MEM_SIZE; ++i) 12631da177e4SLinus Torvalds he_writel_tcm(he_dev, 0, i); 12641da177e4SLinus Torvalds 12651da177e4SLinus Torvalds for (i = 0; i < RCM_MEM_SIZE; ++i) 12661da177e4SLinus Torvalds he_writel_rcm(he_dev, 0, i); 12671da177e4SLinus Torvalds 12681da177e4SLinus Torvalds /* 12691da177e4SLinus Torvalds * transmit connection memory map 12701da177e4SLinus Torvalds * 12711da177e4SLinus Torvalds * tx memory 12721da177e4SLinus Torvalds * 0x0 ___________________ 12731da177e4SLinus Torvalds * | | 12741da177e4SLinus Torvalds * | | 12751da177e4SLinus Torvalds * | TSRa | 12761da177e4SLinus Torvalds * | | 12771da177e4SLinus Torvalds * | | 12781da177e4SLinus Torvalds * 0x8000|___________________| 12791da177e4SLinus Torvalds * | | 12801da177e4SLinus Torvalds * | TSRb | 12811da177e4SLinus Torvalds * 0xc000|___________________| 12821da177e4SLinus Torvalds * | | 12831da177e4SLinus Torvalds * | TSRc | 12841da177e4SLinus Torvalds * 0xe000|___________________| 12851da177e4SLinus Torvalds * | TSRd | 12861da177e4SLinus Torvalds * 0xf000|___________________| 12871da177e4SLinus Torvalds * | tmABR | 12881da177e4SLinus Torvalds * 0x10000|___________________| 12891da177e4SLinus Torvalds * | | 12901da177e4SLinus Torvalds * | tmTPD | 12911da177e4SLinus Torvalds * |___________________| 12921da177e4SLinus Torvalds * | | 12931da177e4SLinus Torvalds * .... 12941da177e4SLinus Torvalds * 0x1ffff|___________________| 12951da177e4SLinus Torvalds * 12961da177e4SLinus Torvalds * 12971da177e4SLinus Torvalds */ 12981da177e4SLinus Torvalds 12991da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRB, TSRB_BA); 13001da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRC, TSRC_BA); 13011da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRD, TSRD_BA); 13021da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TMABR, TMABR_BA); 13031da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TPDBA, TPD_BA); 13041da177e4SLinus Torvalds 13051da177e4SLinus Torvalds 13061da177e4SLinus Torvalds /* 13071da177e4SLinus Torvalds * receive connection memory map 13081da177e4SLinus Torvalds * 13091da177e4SLinus Torvalds * 0x0 ___________________ 13101da177e4SLinus Torvalds * | | 13111da177e4SLinus Torvalds * | | 13121da177e4SLinus Torvalds * | RSRa | 13131da177e4SLinus Torvalds * | | 13141da177e4SLinus Torvalds * | | 13151da177e4SLinus Torvalds * 0x8000|___________________| 13161da177e4SLinus Torvalds * | | 13171da177e4SLinus Torvalds * | rx0/1 | 13181da177e4SLinus Torvalds * | LBM | link lists of local 13191da177e4SLinus Torvalds * | tx | buffer memory 13201da177e4SLinus Torvalds * | | 13211da177e4SLinus Torvalds * 0xd000|___________________| 13221da177e4SLinus Torvalds * | | 13231da177e4SLinus Torvalds * | rmABR | 13241da177e4SLinus Torvalds * 0xe000|___________________| 13251da177e4SLinus Torvalds * | | 13261da177e4SLinus Torvalds * | RSRb | 13271da177e4SLinus Torvalds * |___________________| 13281da177e4SLinus Torvalds * | | 13291da177e4SLinus Torvalds * .... 13301da177e4SLinus Torvalds * 0xffff|___________________| 13311da177e4SLinus Torvalds */ 13321da177e4SLinus Torvalds 13331da177e4SLinus Torvalds he_writel(he_dev, 0x08000, RCMLBM_BA); 13341da177e4SLinus Torvalds he_writel(he_dev, 0x0e000, RCMRSRB_BA); 13351da177e4SLinus Torvalds he_writel(he_dev, 0x0d800, RCMABR_BA); 13361da177e4SLinus Torvalds 13371da177e4SLinus Torvalds /* 5.1.4 initialize local buffer free pools linked lists */ 13381da177e4SLinus Torvalds 13391da177e4SLinus Torvalds he_init_rx_lbfp0(he_dev); 13401da177e4SLinus Torvalds he_init_rx_lbfp1(he_dev); 13411da177e4SLinus Torvalds 13421da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_H); 13431da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_T); 13441da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_H2); 13451da177e4SLinus Torvalds 13461da177e4SLinus Torvalds he_writel(he_dev, 512, RXTHRSH); /* 10% of r0+r1 buffers */ 13471da177e4SLinus Torvalds he_writel(he_dev, 256, LITHRSH); /* 5% of r0+r1 buffers */ 13481da177e4SLinus Torvalds 13491da177e4SLinus Torvalds he_init_tx_lbfp(he_dev); 13501da177e4SLinus Torvalds 13511da177e4SLinus Torvalds he_writel(he_dev, he_is622(he_dev) ? 0x104780 : 0x800, UBUFF_BA); 13521da177e4SLinus Torvalds 13531da177e4SLinus Torvalds /* 5.1.5 initialize intermediate receive queues */ 13541da177e4SLinus Torvalds 13551da177e4SLinus Torvalds if (he_is622(he_dev)) { 13561da177e4SLinus Torvalds he_writel(he_dev, 0x000f, G0_INMQ_S); 13571da177e4SLinus Torvalds he_writel(he_dev, 0x200f, G0_INMQ_L); 13581da177e4SLinus Torvalds 13591da177e4SLinus Torvalds he_writel(he_dev, 0x001f, G1_INMQ_S); 13601da177e4SLinus Torvalds he_writel(he_dev, 0x201f, G1_INMQ_L); 13611da177e4SLinus Torvalds 13621da177e4SLinus Torvalds he_writel(he_dev, 0x002f, G2_INMQ_S); 13631da177e4SLinus Torvalds he_writel(he_dev, 0x202f, G2_INMQ_L); 13641da177e4SLinus Torvalds 13651da177e4SLinus Torvalds he_writel(he_dev, 0x003f, G3_INMQ_S); 13661da177e4SLinus Torvalds he_writel(he_dev, 0x203f, G3_INMQ_L); 13671da177e4SLinus Torvalds 13681da177e4SLinus Torvalds he_writel(he_dev, 0x004f, G4_INMQ_S); 13691da177e4SLinus Torvalds he_writel(he_dev, 0x204f, G4_INMQ_L); 13701da177e4SLinus Torvalds 13711da177e4SLinus Torvalds he_writel(he_dev, 0x005f, G5_INMQ_S); 13721da177e4SLinus Torvalds he_writel(he_dev, 0x205f, G5_INMQ_L); 13731da177e4SLinus Torvalds 13741da177e4SLinus Torvalds he_writel(he_dev, 0x006f, G6_INMQ_S); 13751da177e4SLinus Torvalds he_writel(he_dev, 0x206f, G6_INMQ_L); 13761da177e4SLinus Torvalds 13771da177e4SLinus Torvalds he_writel(he_dev, 0x007f, G7_INMQ_S); 13781da177e4SLinus Torvalds he_writel(he_dev, 0x207f, G7_INMQ_L); 13791da177e4SLinus Torvalds } else { 13801da177e4SLinus Torvalds he_writel(he_dev, 0x0000, G0_INMQ_S); 13811da177e4SLinus Torvalds he_writel(he_dev, 0x0008, G0_INMQ_L); 13821da177e4SLinus Torvalds 13831da177e4SLinus Torvalds he_writel(he_dev, 0x0001, G1_INMQ_S); 13841da177e4SLinus Torvalds he_writel(he_dev, 0x0009, G1_INMQ_L); 13851da177e4SLinus Torvalds 13861da177e4SLinus Torvalds he_writel(he_dev, 0x0002, G2_INMQ_S); 13871da177e4SLinus Torvalds he_writel(he_dev, 0x000a, G2_INMQ_L); 13881da177e4SLinus Torvalds 13891da177e4SLinus Torvalds he_writel(he_dev, 0x0003, G3_INMQ_S); 13901da177e4SLinus Torvalds he_writel(he_dev, 0x000b, G3_INMQ_L); 13911da177e4SLinus Torvalds 13921da177e4SLinus Torvalds he_writel(he_dev, 0x0004, G4_INMQ_S); 13931da177e4SLinus Torvalds he_writel(he_dev, 0x000c, G4_INMQ_L); 13941da177e4SLinus Torvalds 13951da177e4SLinus Torvalds he_writel(he_dev, 0x0005, G5_INMQ_S); 13961da177e4SLinus Torvalds he_writel(he_dev, 0x000d, G5_INMQ_L); 13971da177e4SLinus Torvalds 13981da177e4SLinus Torvalds he_writel(he_dev, 0x0006, G6_INMQ_S); 13991da177e4SLinus Torvalds he_writel(he_dev, 0x000e, G6_INMQ_L); 14001da177e4SLinus Torvalds 14011da177e4SLinus Torvalds he_writel(he_dev, 0x0007, G7_INMQ_S); 14021da177e4SLinus Torvalds he_writel(he_dev, 0x000f, G7_INMQ_L); 14031da177e4SLinus Torvalds } 14041da177e4SLinus Torvalds 14051da177e4SLinus Torvalds /* 5.1.6 application tunable parameters */ 14061da177e4SLinus Torvalds 14071da177e4SLinus Torvalds he_writel(he_dev, 0x0, MCC); 14081da177e4SLinus Torvalds he_writel(he_dev, 0x0, OEC); 14091da177e4SLinus Torvalds he_writel(he_dev, 0x0, DCC); 14101da177e4SLinus Torvalds he_writel(he_dev, 0x0, CEC); 14111da177e4SLinus Torvalds 14121da177e4SLinus Torvalds /* 5.1.7 cs block initialization */ 14131da177e4SLinus Torvalds 14141da177e4SLinus Torvalds he_init_cs_block(he_dev); 14151da177e4SLinus Torvalds 14161da177e4SLinus Torvalds /* 5.1.8 cs block connection memory initialization */ 14171da177e4SLinus Torvalds 14181da177e4SLinus Torvalds if (he_init_cs_block_rcm(he_dev) < 0) 14191da177e4SLinus Torvalds return -ENOMEM; 14201da177e4SLinus Torvalds 14211da177e4SLinus Torvalds /* 5.1.10 initialize host structures */ 14221da177e4SLinus Torvalds 14231da177e4SLinus Torvalds he_init_tpdrq(he_dev); 14241da177e4SLinus Torvalds 1425ede58ef2Schas williams - CONTRACTOR he_dev->tpd_pool = dma_pool_create("tpd", &he_dev->pci_dev->dev, 14261da177e4SLinus Torvalds sizeof(struct he_tpd), TPD_ALIGNMENT, 0); 14271da177e4SLinus Torvalds if (he_dev->tpd_pool == NULL) { 1428ede58ef2Schas williams - CONTRACTOR hprintk("unable to create tpd dma_pool\n"); 14291da177e4SLinus Torvalds return -ENOMEM; 14301da177e4SLinus Torvalds } 14311da177e4SLinus Torvalds 14321da177e4SLinus Torvalds INIT_LIST_HEAD(&he_dev->outstanding_tpds); 14331da177e4SLinus Torvalds 14341da177e4SLinus Torvalds if (he_init_group(he_dev, 0) != 0) 14351da177e4SLinus Torvalds return -ENOMEM; 14361da177e4SLinus Torvalds 14371da177e4SLinus Torvalds for (group = 1; group < HE_NUM_GROUPS; ++group) { 14381da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_S + (group * 32)); 14391da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_T + (group * 32)); 14401da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_QI + (group * 32)); 14411da177e4SLinus Torvalds he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 14421da177e4SLinus Torvalds G0_RBPS_BS + (group * 32)); 14431da177e4SLinus Torvalds 14441da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_S + (group * 32)); 14451da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_T + (group * 32)); 14461da177e4SLinus Torvalds he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 14471da177e4SLinus Torvalds G0_RBPL_QI + (group * 32)); 14481da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_BS + (group * 32)); 14491da177e4SLinus Torvalds 14501da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_ST + (group * 16)); 14511da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_H + (group * 16)); 14521da177e4SLinus Torvalds he_writel(he_dev, RBRQ_THRESH(0x1) | RBRQ_SIZE(0x0), 14531da177e4SLinus Torvalds G0_RBRQ_Q + (group * 16)); 14541da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_I + (group * 16)); 14551da177e4SLinus Torvalds 14561da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_B_T + (group * 16)); 14571da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_H + (group * 16)); 14581da177e4SLinus Torvalds he_writel(he_dev, TBRQ_THRESH(0x1), 14591da177e4SLinus Torvalds G0_TBRQ_THRESH + (group * 16)); 14601da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_S + (group * 16)); 14611da177e4SLinus Torvalds } 14621da177e4SLinus Torvalds 14631da177e4SLinus Torvalds /* host status page */ 14641da177e4SLinus Torvalds 1465ede58ef2Schas williams - CONTRACTOR he_dev->hsp = dma_zalloc_coherent(&he_dev->pci_dev->dev, 14666f2a011aSJoe Perches sizeof(struct he_hsp), 1467ede58ef2Schas williams - CONTRACTOR &he_dev->hsp_phys, GFP_KERNEL); 14681da177e4SLinus Torvalds if (he_dev->hsp == NULL) { 14691da177e4SLinus Torvalds hprintk("failed to allocate host status page\n"); 14701da177e4SLinus Torvalds return -ENOMEM; 14711da177e4SLinus Torvalds } 14721da177e4SLinus Torvalds he_writel(he_dev, he_dev->hsp_phys, HSP_BA); 14731da177e4SLinus Torvalds 14741da177e4SLinus Torvalds /* initialize framer */ 14751da177e4SLinus Torvalds 14761da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 1477059e3779SChas Williams if (he_isMM(he_dev)) 14781da177e4SLinus Torvalds suni_init(he_dev->atm_dev); 14791da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->start) 14801da177e4SLinus Torvalds he_dev->atm_dev->phy->start(he_dev->atm_dev); 14811da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 14821da177e4SLinus Torvalds 14831da177e4SLinus Torvalds if (sdh) { 14841da177e4SLinus Torvalds /* this really should be in suni.c but for now... */ 14851da177e4SLinus Torvalds int val; 14861da177e4SLinus Torvalds 14871da177e4SLinus Torvalds val = he_phy_get(he_dev->atm_dev, SUNI_TPOP_APM); 14881da177e4SLinus Torvalds val = (val & ~SUNI_TPOP_APM_S) | (SUNI_TPOP_S_SDH << SUNI_TPOP_APM_S_SHIFT); 14891da177e4SLinus Torvalds he_phy_put(he_dev->atm_dev, val, SUNI_TPOP_APM); 149065c3e471SChas Williams he_phy_put(he_dev->atm_dev, SUNI_TACP_IUCHP_CLP, SUNI_TACP_IUCHP); 14911da177e4SLinus Torvalds } 14921da177e4SLinus Torvalds 14931da177e4SLinus Torvalds /* 5.1.12 enable transmit and receive */ 14941da177e4SLinus Torvalds 14951da177e4SLinus Torvalds reg = he_readl_mbox(he_dev, CS_ERCTL0); 14961da177e4SLinus Torvalds reg |= TX_ENABLE|ER_ENABLE; 14971da177e4SLinus Torvalds he_writel_mbox(he_dev, reg, CS_ERCTL0); 14981da177e4SLinus Torvalds 14991da177e4SLinus Torvalds reg = he_readl(he_dev, RC_CONFIG); 15001da177e4SLinus Torvalds reg |= RX_ENABLE; 15011da177e4SLinus Torvalds he_writel(he_dev, reg, RC_CONFIG); 15021da177e4SLinus Torvalds 15031da177e4SLinus Torvalds for (i = 0; i < HE_NUM_CS_STPER; ++i) { 15041da177e4SLinus Torvalds he_dev->cs_stper[i].inuse = 0; 15051da177e4SLinus Torvalds he_dev->cs_stper[i].pcr = -1; 15061da177e4SLinus Torvalds } 15071da177e4SLinus Torvalds he_dev->total_bw = 0; 15081da177e4SLinus Torvalds 15091da177e4SLinus Torvalds 15101da177e4SLinus Torvalds /* atm linux initialization */ 15111da177e4SLinus Torvalds 15121da177e4SLinus Torvalds he_dev->atm_dev->ci_range.vpi_bits = he_dev->vpibits; 15131da177e4SLinus Torvalds he_dev->atm_dev->ci_range.vci_bits = he_dev->vcibits; 15141da177e4SLinus Torvalds 15151da177e4SLinus Torvalds he_dev->irq_peak = 0; 15161da177e4SLinus Torvalds he_dev->rbrq_peak = 0; 15171da177e4SLinus Torvalds he_dev->rbpl_peak = 0; 15181da177e4SLinus Torvalds he_dev->tbrq_peak = 0; 15191da177e4SLinus Torvalds 15201da177e4SLinus Torvalds HPRINTK("hell bent for leather!\n"); 15211da177e4SLinus Torvalds 15221da177e4SLinus Torvalds return 0; 15231da177e4SLinus Torvalds } 15241da177e4SLinus Torvalds 15251da177e4SLinus Torvalds static void 15261da177e4SLinus Torvalds he_stop(struct he_dev *he_dev) 15271da177e4SLinus Torvalds { 1528e623d625Schas williams - CONTRACTOR struct he_buff *heb, *next; 15291da177e4SLinus Torvalds struct pci_dev *pci_dev; 1530e623d625Schas williams - CONTRACTOR u32 gen_cntl_0, reg; 1531e623d625Schas williams - CONTRACTOR u16 command; 15321da177e4SLinus Torvalds 15331da177e4SLinus Torvalds pci_dev = he_dev->pci_dev; 15341da177e4SLinus Torvalds 15351da177e4SLinus Torvalds /* disable interrupts */ 15361da177e4SLinus Torvalds 15371da177e4SLinus Torvalds if (he_dev->membase) { 15381da177e4SLinus Torvalds pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0); 15391da177e4SLinus Torvalds gen_cntl_0 &= ~(INT_PROC_ENBL | INIT_ENB); 15401da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 15411da177e4SLinus Torvalds 15421da177e4SLinus Torvalds tasklet_disable(&he_dev->tasklet); 15431da177e4SLinus Torvalds 15441da177e4SLinus Torvalds /* disable recv and transmit */ 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 15551da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 15561da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->stop) 15571da177e4SLinus Torvalds he_dev->atm_dev->phy->stop(he_dev->atm_dev); 15581da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 15591da177e4SLinus Torvalds 15601da177e4SLinus Torvalds if (he_dev->irq) 15611da177e4SLinus Torvalds free_irq(he_dev->irq, he_dev); 15621da177e4SLinus Torvalds 15631da177e4SLinus Torvalds if (he_dev->irq_base) 1564ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&he_dev->pci_dev->dev, (CONFIG_IRQ_SIZE + 1) 15651da177e4SLinus Torvalds * sizeof(struct he_irq), he_dev->irq_base, he_dev->irq_phys); 15661da177e4SLinus Torvalds 15671da177e4SLinus Torvalds if (he_dev->hsp) 1568ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&he_dev->pci_dev->dev, sizeof(struct he_hsp), 15691da177e4SLinus Torvalds he_dev->hsp, he_dev->hsp_phys); 15701da177e4SLinus Torvalds 15711da177e4SLinus Torvalds if (he_dev->rbpl_base) { 1572e623d625Schas williams - CONTRACTOR list_for_each_entry_safe(heb, next, &he_dev->rbpl_outstanding, entry) 1573ede58ef2Schas williams - CONTRACTOR dma_pool_free(he_dev->rbpl_pool, heb, heb->mapping); 15747d1f8db4SJorge Boncompte 1575ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&he_dev->pci_dev->dev, CONFIG_RBPL_SIZE 15761da177e4SLinus Torvalds * sizeof(struct he_rbp), he_dev->rbpl_base, he_dev->rbpl_phys); 15771da177e4SLinus Torvalds } 15781da177e4SLinus Torvalds 1579e623d625Schas williams - CONTRACTOR kfree(he_dev->rbpl_virt); 1580e623d625Schas williams - CONTRACTOR kfree(he_dev->rbpl_table); 1581e623d625Schas williams - CONTRACTOR 15821da177e4SLinus Torvalds if (he_dev->rbpl_pool) 1583ede58ef2Schas williams - CONTRACTOR dma_pool_destroy(he_dev->rbpl_pool); 15841da177e4SLinus Torvalds 15851da177e4SLinus Torvalds if (he_dev->rbrq_base) 1586ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&he_dev->pci_dev->dev, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), 15871da177e4SLinus Torvalds he_dev->rbrq_base, he_dev->rbrq_phys); 15881da177e4SLinus Torvalds 15891da177e4SLinus Torvalds if (he_dev->tbrq_base) 1590ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&he_dev->pci_dev->dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), 15911da177e4SLinus Torvalds he_dev->tbrq_base, he_dev->tbrq_phys); 15921da177e4SLinus Torvalds 15931da177e4SLinus Torvalds if (he_dev->tpdrq_base) 1594ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&he_dev->pci_dev->dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), 15951da177e4SLinus Torvalds he_dev->tpdrq_base, he_dev->tpdrq_phys); 15961da177e4SLinus Torvalds 15971da177e4SLinus Torvalds if (he_dev->tpd_pool) 1598ede58ef2Schas williams - CONTRACTOR dma_pool_destroy(he_dev->tpd_pool); 15991da177e4SLinus Torvalds 16001da177e4SLinus Torvalds if (he_dev->pci_dev) { 16011da177e4SLinus Torvalds pci_read_config_word(he_dev->pci_dev, PCI_COMMAND, &command); 16021da177e4SLinus Torvalds command &= ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); 16031da177e4SLinus Torvalds pci_write_config_word(he_dev->pci_dev, PCI_COMMAND, command); 16041da177e4SLinus Torvalds } 16051da177e4SLinus Torvalds 16061da177e4SLinus Torvalds if (he_dev->membase) 16071da177e4SLinus Torvalds iounmap(he_dev->membase); 16081da177e4SLinus Torvalds } 16091da177e4SLinus Torvalds 16101da177e4SLinus Torvalds static struct he_tpd * 16111da177e4SLinus Torvalds __alloc_tpd(struct he_dev *he_dev) 16121da177e4SLinus Torvalds { 16131da177e4SLinus Torvalds struct he_tpd *tpd; 1614e623d625Schas williams - CONTRACTOR dma_addr_t mapping; 16151da177e4SLinus Torvalds 1616ede58ef2Schas williams - CONTRACTOR tpd = dma_pool_alloc(he_dev->tpd_pool, GFP_ATOMIC, &mapping); 16171da177e4SLinus Torvalds if (tpd == NULL) 16181da177e4SLinus Torvalds return NULL; 16191da177e4SLinus Torvalds 1620e623d625Schas williams - CONTRACTOR tpd->status = TPD_ADDR(mapping); 16211da177e4SLinus Torvalds tpd->reserved = 0; 16221da177e4SLinus Torvalds tpd->iovec[0].addr = 0; tpd->iovec[0].len = 0; 16231da177e4SLinus Torvalds tpd->iovec[1].addr = 0; tpd->iovec[1].len = 0; 16241da177e4SLinus Torvalds tpd->iovec[2].addr = 0; tpd->iovec[2].len = 0; 16251da177e4SLinus Torvalds 16261da177e4SLinus Torvalds return tpd; 16271da177e4SLinus Torvalds } 16281da177e4SLinus Torvalds 16291da177e4SLinus Torvalds #define AAL5_LEN(buf,len) \ 16301da177e4SLinus Torvalds ((((unsigned char *)(buf))[(len)-6] << 8) | \ 16311da177e4SLinus Torvalds (((unsigned char *)(buf))[(len)-5])) 16321da177e4SLinus Torvalds 16331da177e4SLinus Torvalds /* 2.10.1.2 receive 16341da177e4SLinus Torvalds * 16351da177e4SLinus Torvalds * aal5 packets can optionally return the tcp checksum in the lower 16361da177e4SLinus Torvalds * 16 bits of the crc (RSR0_TCP_CKSUM) 16371da177e4SLinus Torvalds */ 16381da177e4SLinus Torvalds 16391da177e4SLinus Torvalds #define TCP_CKSUM(buf,len) \ 16401da177e4SLinus Torvalds ((((unsigned char *)(buf))[(len)-2] << 8) | \ 16411da177e4SLinus Torvalds (((unsigned char *)(buf))[(len-1)])) 16421da177e4SLinus Torvalds 16431da177e4SLinus Torvalds static int 16441da177e4SLinus Torvalds he_service_rbrq(struct he_dev *he_dev, int group) 16451da177e4SLinus Torvalds { 16461da177e4SLinus Torvalds struct he_rbrq *rbrq_tail = (struct he_rbrq *) 16471da177e4SLinus Torvalds ((unsigned long)he_dev->rbrq_base | 16481da177e4SLinus Torvalds he_dev->hsp->group[group].rbrq_tail); 16491da177e4SLinus Torvalds unsigned cid, lastcid = -1; 16501da177e4SLinus Torvalds struct sk_buff *skb; 16511da177e4SLinus Torvalds struct atm_vcc *vcc = NULL; 16521da177e4SLinus Torvalds struct he_vcc *he_vcc; 1653e623d625Schas williams - CONTRACTOR struct he_buff *heb, *next; 1654e623d625Schas williams - CONTRACTOR int i; 16551da177e4SLinus Torvalds int pdus_assembled = 0; 16561da177e4SLinus Torvalds int updated = 0; 16571da177e4SLinus Torvalds 16581da177e4SLinus Torvalds read_lock(&vcc_sklist_lock); 16591da177e4SLinus Torvalds while (he_dev->rbrq_head != rbrq_tail) { 16601da177e4SLinus Torvalds ++updated; 16611da177e4SLinus Torvalds 16621da177e4SLinus Torvalds HPRINTK("%p rbrq%d 0x%x len=%d cid=0x%x %s%s%s%s%s%s\n", 16631da177e4SLinus Torvalds he_dev->rbrq_head, group, 16641da177e4SLinus Torvalds RBRQ_ADDR(he_dev->rbrq_head), 16651da177e4SLinus Torvalds RBRQ_BUFLEN(he_dev->rbrq_head), 16661da177e4SLinus Torvalds RBRQ_CID(he_dev->rbrq_head), 16671da177e4SLinus Torvalds RBRQ_CRC_ERR(he_dev->rbrq_head) ? " CRC_ERR" : "", 16681da177e4SLinus Torvalds RBRQ_LEN_ERR(he_dev->rbrq_head) ? " LEN_ERR" : "", 16691da177e4SLinus Torvalds RBRQ_END_PDU(he_dev->rbrq_head) ? " END_PDU" : "", 16701da177e4SLinus Torvalds RBRQ_AAL5_PROT(he_dev->rbrq_head) ? " AAL5_PROT" : "", 16711da177e4SLinus Torvalds RBRQ_CON_CLOSED(he_dev->rbrq_head) ? " CON_CLOSED" : "", 16721da177e4SLinus Torvalds RBRQ_HBUF_ERR(he_dev->rbrq_head) ? " HBUF_ERR" : ""); 16731da177e4SLinus Torvalds 1674e623d625Schas williams - CONTRACTOR i = RBRQ_ADDR(he_dev->rbrq_head) >> RBP_IDX_OFFSET; 1675e623d625Schas williams - CONTRACTOR heb = he_dev->rbpl_virt[i]; 16761da177e4SLinus Torvalds 16771da177e4SLinus Torvalds cid = RBRQ_CID(he_dev->rbrq_head); 16781da177e4SLinus Torvalds if (cid != lastcid) 16791da177e4SLinus Torvalds vcc = __find_vcc(he_dev, cid); 16801da177e4SLinus Torvalds lastcid = cid; 16811da177e4SLinus Torvalds 1682e623d625Schas williams - CONTRACTOR if (vcc == NULL || (he_vcc = HE_VCC(vcc)) == NULL) { 1683e623d625Schas williams - CONTRACTOR hprintk("vcc/he_vcc == NULL (cid 0x%x)\n", cid); 1684e623d625Schas williams - CONTRACTOR if (!RBRQ_HBUF_ERR(he_dev->rbrq_head)) { 1685e623d625Schas williams - CONTRACTOR clear_bit(i, he_dev->rbpl_table); 1686e623d625Schas williams - CONTRACTOR list_del(&heb->entry); 1687ede58ef2Schas williams - CONTRACTOR dma_pool_free(he_dev->rbpl_pool, heb, heb->mapping); 16881da177e4SLinus Torvalds } 16891da177e4SLinus Torvalds 16901da177e4SLinus Torvalds goto next_rbrq_entry; 16911da177e4SLinus Torvalds } 16921da177e4SLinus Torvalds 16931da177e4SLinus Torvalds if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) { 16941da177e4SLinus Torvalds hprintk("HBUF_ERR! (cid 0x%x)\n", cid); 16951da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 16961da177e4SLinus Torvalds goto return_host_buffers; 16971da177e4SLinus Torvalds } 16981da177e4SLinus Torvalds 1699e623d625Schas williams - CONTRACTOR heb->len = RBRQ_BUFLEN(he_dev->rbrq_head) * 4; 1700e623d625Schas williams - CONTRACTOR clear_bit(i, he_dev->rbpl_table); 1701e623d625Schas williams - CONTRACTOR list_move_tail(&heb->entry, &he_vcc->buffers); 1702e623d625Schas williams - CONTRACTOR he_vcc->pdu_len += heb->len; 17031da177e4SLinus Torvalds 17041da177e4SLinus Torvalds if (RBRQ_CON_CLOSED(he_dev->rbrq_head)) { 17051da177e4SLinus Torvalds lastcid = -1; 17061da177e4SLinus Torvalds HPRINTK("wake_up rx_waitq (cid 0x%x)\n", cid); 17071da177e4SLinus Torvalds wake_up(&he_vcc->rx_waitq); 17081da177e4SLinus Torvalds goto return_host_buffers; 17091da177e4SLinus Torvalds } 17101da177e4SLinus Torvalds 17111da177e4SLinus Torvalds if (!RBRQ_END_PDU(he_dev->rbrq_head)) 17121da177e4SLinus Torvalds goto next_rbrq_entry; 17131da177e4SLinus Torvalds 17141da177e4SLinus Torvalds if (RBRQ_LEN_ERR(he_dev->rbrq_head) 17151da177e4SLinus Torvalds || RBRQ_CRC_ERR(he_dev->rbrq_head)) { 17161da177e4SLinus Torvalds HPRINTK("%s%s (%d.%d)\n", 17171da177e4SLinus Torvalds RBRQ_CRC_ERR(he_dev->rbrq_head) 17181da177e4SLinus Torvalds ? "CRC_ERR " : "", 17191da177e4SLinus Torvalds RBRQ_LEN_ERR(he_dev->rbrq_head) 17201da177e4SLinus Torvalds ? "LEN_ERR" : "", 17211da177e4SLinus Torvalds vcc->vpi, vcc->vci); 17221da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 17231da177e4SLinus Torvalds goto return_host_buffers; 17241da177e4SLinus Torvalds } 17251da177e4SLinus Torvalds 17261da177e4SLinus Torvalds skb = atm_alloc_charge(vcc, he_vcc->pdu_len + rx_skb_reserve, 17271da177e4SLinus Torvalds GFP_ATOMIC); 17281da177e4SLinus Torvalds if (!skb) { 17291da177e4SLinus Torvalds HPRINTK("charge failed (%d.%d)\n", vcc->vpi, vcc->vci); 17301da177e4SLinus Torvalds goto return_host_buffers; 17311da177e4SLinus Torvalds } 17321da177e4SLinus Torvalds 17331da177e4SLinus Torvalds if (rx_skb_reserve > 0) 17341da177e4SLinus Torvalds skb_reserve(skb, rx_skb_reserve); 17351da177e4SLinus Torvalds 1736a61bbcf2SPatrick McHardy __net_timestamp(skb); 17371da177e4SLinus Torvalds 1738e623d625Schas williams - CONTRACTOR list_for_each_entry(heb, &he_vcc->buffers, entry) 1739e623d625Schas williams - CONTRACTOR memcpy(skb_put(skb, heb->len), &heb->data, heb->len); 17401da177e4SLinus Torvalds 17411da177e4SLinus Torvalds switch (vcc->qos.aal) { 17421da177e4SLinus Torvalds case ATM_AAL0: 17431da177e4SLinus Torvalds /* 2.10.1.5 raw cell receive */ 17441da177e4SLinus Torvalds skb->len = ATM_AAL0_SDU; 174527a884dcSArnaldo Carvalho de Melo skb_set_tail_pointer(skb, skb->len); 17461da177e4SLinus Torvalds break; 17471da177e4SLinus Torvalds case ATM_AAL5: 17481da177e4SLinus Torvalds /* 2.10.1.2 aal5 receive */ 17491da177e4SLinus Torvalds 17501da177e4SLinus Torvalds skb->len = AAL5_LEN(skb->data, he_vcc->pdu_len); 175127a884dcSArnaldo Carvalho de Melo skb_set_tail_pointer(skb, skb->len); 17521da177e4SLinus Torvalds #ifdef USE_CHECKSUM_HW 17531da177e4SLinus Torvalds if (vcc->vpi == 0 && vcc->vci >= ATM_NOT_RSV_VCI) { 175484fa7933SPatrick McHardy skb->ip_summed = CHECKSUM_COMPLETE; 17551da177e4SLinus Torvalds skb->csum = TCP_CKSUM(skb->data, 17561da177e4SLinus Torvalds he_vcc->pdu_len); 17571da177e4SLinus Torvalds } 17581da177e4SLinus Torvalds #endif 17591da177e4SLinus Torvalds break; 17601da177e4SLinus Torvalds } 17611da177e4SLinus Torvalds 17621da177e4SLinus Torvalds #ifdef should_never_happen 17631da177e4SLinus Torvalds if (skb->len > vcc->qos.rxtp.max_sdu) 17641da177e4SLinus Torvalds hprintk("pdu_len (%d) > vcc->qos.rxtp.max_sdu (%d)! cid 0x%x\n", skb->len, vcc->qos.rxtp.max_sdu, cid); 17651da177e4SLinus Torvalds #endif 17661da177e4SLinus Torvalds 17671da177e4SLinus Torvalds #ifdef notdef 17681da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 17691da177e4SLinus Torvalds #endif 17707f81dc00SChas Williams spin_unlock(&he_dev->global_lock); 17711da177e4SLinus Torvalds vcc->push(vcc, skb); 17727f81dc00SChas Williams spin_lock(&he_dev->global_lock); 17731da177e4SLinus Torvalds 17741da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 17751da177e4SLinus Torvalds 17761da177e4SLinus Torvalds return_host_buffers: 17771da177e4SLinus Torvalds ++pdus_assembled; 17781da177e4SLinus Torvalds 1779e623d625Schas williams - CONTRACTOR list_for_each_entry_safe(heb, next, &he_vcc->buffers, entry) 1780ede58ef2Schas williams - CONTRACTOR dma_pool_free(he_dev->rbpl_pool, heb, heb->mapping); 1781e623d625Schas williams - CONTRACTOR INIT_LIST_HEAD(&he_vcc->buffers); 17821da177e4SLinus Torvalds he_vcc->pdu_len = 0; 17831da177e4SLinus Torvalds 17841da177e4SLinus Torvalds next_rbrq_entry: 17851da177e4SLinus Torvalds he_dev->rbrq_head = (struct he_rbrq *) 17861da177e4SLinus Torvalds ((unsigned long) he_dev->rbrq_base | 1787e60c5e14SDavid S. Miller RBRQ_MASK(he_dev->rbrq_head + 1)); 17881da177e4SLinus Torvalds 17891da177e4SLinus Torvalds } 17901da177e4SLinus Torvalds read_unlock(&vcc_sklist_lock); 17911da177e4SLinus Torvalds 17921da177e4SLinus Torvalds if (updated) { 17931da177e4SLinus Torvalds if (updated > he_dev->rbrq_peak) 17941da177e4SLinus Torvalds he_dev->rbrq_peak = updated; 17951da177e4SLinus Torvalds 17961da177e4SLinus Torvalds he_writel(he_dev, RBRQ_MASK(he_dev->rbrq_head), 17971da177e4SLinus Torvalds G0_RBRQ_H + (group * 16)); 17981da177e4SLinus Torvalds } 17991da177e4SLinus Torvalds 18001da177e4SLinus Torvalds return pdus_assembled; 18011da177e4SLinus Torvalds } 18021da177e4SLinus Torvalds 18031da177e4SLinus Torvalds static void 18041da177e4SLinus Torvalds he_service_tbrq(struct he_dev *he_dev, int group) 18051da177e4SLinus Torvalds { 18061da177e4SLinus Torvalds struct he_tbrq *tbrq_tail = (struct he_tbrq *) 18071da177e4SLinus Torvalds ((unsigned long)he_dev->tbrq_base | 18081da177e4SLinus Torvalds he_dev->hsp->group[group].tbrq_tail); 18091da177e4SLinus Torvalds struct he_tpd *tpd; 18101da177e4SLinus Torvalds int slot, updated = 0; 18111da177e4SLinus Torvalds struct he_tpd *__tpd; 18121da177e4SLinus Torvalds 18131da177e4SLinus Torvalds /* 2.1.6 transmit buffer return queue */ 18141da177e4SLinus Torvalds 18151da177e4SLinus Torvalds while (he_dev->tbrq_head != tbrq_tail) { 18161da177e4SLinus Torvalds ++updated; 18171da177e4SLinus Torvalds 18181da177e4SLinus Torvalds HPRINTK("tbrq%d 0x%x%s%s\n", 18191da177e4SLinus Torvalds group, 18201da177e4SLinus Torvalds TBRQ_TPD(he_dev->tbrq_head), 18211da177e4SLinus Torvalds TBRQ_EOS(he_dev->tbrq_head) ? " EOS" : "", 18221da177e4SLinus Torvalds TBRQ_MULTIPLE(he_dev->tbrq_head) ? " MULTIPLE" : ""); 18231da177e4SLinus Torvalds tpd = NULL; 18241da177e4SLinus Torvalds list_for_each_entry(__tpd, &he_dev->outstanding_tpds, entry) { 18251da177e4SLinus Torvalds if (TPD_ADDR(__tpd->status) == TBRQ_TPD(he_dev->tbrq_head)) { 18261da177e4SLinus Torvalds tpd = __tpd; 18271da177e4SLinus Torvalds list_del(&__tpd->entry); 18281da177e4SLinus Torvalds break; 18291da177e4SLinus Torvalds } 18301da177e4SLinus Torvalds } 18311da177e4SLinus Torvalds 18321da177e4SLinus Torvalds if (tpd == NULL) { 18331da177e4SLinus Torvalds hprintk("unable to locate tpd for dma buffer %x\n", 18341da177e4SLinus Torvalds TBRQ_TPD(he_dev->tbrq_head)); 18351da177e4SLinus Torvalds goto next_tbrq_entry; 18361da177e4SLinus Torvalds } 18371da177e4SLinus Torvalds 18381da177e4SLinus Torvalds if (TBRQ_EOS(he_dev->tbrq_head)) { 18391da177e4SLinus Torvalds HPRINTK("wake_up(tx_waitq) cid 0x%x\n", 18401da177e4SLinus Torvalds he_mkcid(he_dev, tpd->vcc->vpi, tpd->vcc->vci)); 18411da177e4SLinus Torvalds if (tpd->vcc) 18421da177e4SLinus Torvalds wake_up(&HE_VCC(tpd->vcc)->tx_waitq); 18431da177e4SLinus Torvalds 18441da177e4SLinus Torvalds goto next_tbrq_entry; 18451da177e4SLinus Torvalds } 18461da177e4SLinus Torvalds 18471da177e4SLinus Torvalds for (slot = 0; slot < TPD_MAXIOV; ++slot) { 18481da177e4SLinus Torvalds if (tpd->iovec[slot].addr) 1849ede58ef2Schas williams - CONTRACTOR dma_unmap_single(&he_dev->pci_dev->dev, 18501da177e4SLinus Torvalds tpd->iovec[slot].addr, 18511da177e4SLinus Torvalds tpd->iovec[slot].len & TPD_LEN_MASK, 1852ede58ef2Schas williams - CONTRACTOR DMA_TO_DEVICE); 18531da177e4SLinus Torvalds if (tpd->iovec[slot].len & TPD_LST) 18541da177e4SLinus Torvalds break; 18551da177e4SLinus Torvalds 18561da177e4SLinus Torvalds } 18571da177e4SLinus Torvalds 18581da177e4SLinus Torvalds if (tpd->skb) { /* && !TBRQ_MULTIPLE(he_dev->tbrq_head) */ 18591da177e4SLinus Torvalds if (tpd->vcc && tpd->vcc->pop) 18601da177e4SLinus Torvalds tpd->vcc->pop(tpd->vcc, tpd->skb); 18611da177e4SLinus Torvalds else 18621da177e4SLinus Torvalds dev_kfree_skb_any(tpd->skb); 18631da177e4SLinus Torvalds } 18641da177e4SLinus Torvalds 18651da177e4SLinus Torvalds next_tbrq_entry: 18661da177e4SLinus Torvalds if (tpd) 1867ede58ef2Schas williams - CONTRACTOR dma_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); 18681da177e4SLinus Torvalds he_dev->tbrq_head = (struct he_tbrq *) 18691da177e4SLinus Torvalds ((unsigned long) he_dev->tbrq_base | 1870e60c5e14SDavid S. Miller TBRQ_MASK(he_dev->tbrq_head + 1)); 18711da177e4SLinus Torvalds } 18721da177e4SLinus Torvalds 18731da177e4SLinus Torvalds if (updated) { 18741da177e4SLinus Torvalds if (updated > he_dev->tbrq_peak) 18751da177e4SLinus Torvalds he_dev->tbrq_peak = updated; 18761da177e4SLinus Torvalds 18771da177e4SLinus Torvalds he_writel(he_dev, TBRQ_MASK(he_dev->tbrq_head), 18781da177e4SLinus Torvalds G0_TBRQ_H + (group * 16)); 18791da177e4SLinus Torvalds } 18801da177e4SLinus Torvalds } 18811da177e4SLinus Torvalds 18821da177e4SLinus Torvalds static void 18831da177e4SLinus Torvalds he_service_rbpl(struct he_dev *he_dev, int group) 18841da177e4SLinus Torvalds { 1885e623d625Schas williams - CONTRACTOR struct he_rbp *new_tail; 18861da177e4SLinus Torvalds struct he_rbp *rbpl_head; 1887e623d625Schas williams - CONTRACTOR struct he_buff *heb; 1888e623d625Schas williams - CONTRACTOR dma_addr_t mapping; 1889e623d625Schas williams - CONTRACTOR int i; 18901da177e4SLinus Torvalds int moved = 0; 18911da177e4SLinus Torvalds 18921da177e4SLinus Torvalds rbpl_head = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base | 18931da177e4SLinus Torvalds RBPL_MASK(he_readl(he_dev, G0_RBPL_S))); 18941da177e4SLinus Torvalds 18951da177e4SLinus Torvalds for (;;) { 1896e623d625Schas williams - CONTRACTOR new_tail = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base | 18971da177e4SLinus Torvalds RBPL_MASK(he_dev->rbpl_tail+1)); 18981da177e4SLinus Torvalds 18991da177e4SLinus Torvalds /* table 3.42 -- rbpl_tail should never be set to rbpl_head */ 1900e623d625Schas williams - CONTRACTOR if (new_tail == rbpl_head) 19011da177e4SLinus Torvalds break; 19021da177e4SLinus Torvalds 1903e623d625Schas williams - CONTRACTOR i = find_next_zero_bit(he_dev->rbpl_table, RBPL_TABLE_SIZE, he_dev->rbpl_hint); 1904e623d625Schas williams - CONTRACTOR if (i > (RBPL_TABLE_SIZE - 1)) { 1905e623d625Schas williams - CONTRACTOR i = find_first_zero_bit(he_dev->rbpl_table, RBPL_TABLE_SIZE); 1906e623d625Schas williams - CONTRACTOR if (i > (RBPL_TABLE_SIZE - 1)) 1907e623d625Schas williams - CONTRACTOR break; 1908e623d625Schas williams - CONTRACTOR } 1909e623d625Schas williams - CONTRACTOR he_dev->rbpl_hint = i + 1; 1910e623d625Schas williams - CONTRACTOR 1911ede58ef2Schas williams - CONTRACTOR heb = dma_pool_alloc(he_dev->rbpl_pool, GFP_ATOMIC, &mapping); 1912e623d625Schas williams - CONTRACTOR if (!heb) 1913e623d625Schas williams - CONTRACTOR break; 1914e623d625Schas williams - CONTRACTOR heb->mapping = mapping; 1915e623d625Schas williams - CONTRACTOR list_add(&heb->entry, &he_dev->rbpl_outstanding); 1916e623d625Schas williams - CONTRACTOR he_dev->rbpl_virt[i] = heb; 1917e623d625Schas williams - CONTRACTOR set_bit(i, he_dev->rbpl_table); 1918e623d625Schas williams - CONTRACTOR new_tail->idx = i << RBP_IDX_OFFSET; 1919e623d625Schas williams - CONTRACTOR new_tail->phys = mapping + offsetof(struct he_buff, data); 1920e623d625Schas williams - CONTRACTOR 1921e623d625Schas williams - CONTRACTOR he_dev->rbpl_tail = new_tail; 19221da177e4SLinus Torvalds ++moved; 19231da177e4SLinus Torvalds } 19241da177e4SLinus Torvalds 19251da177e4SLinus Torvalds if (moved) 19261da177e4SLinus Torvalds he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), G0_RBPL_T); 19271da177e4SLinus Torvalds } 19281da177e4SLinus Torvalds 19291da177e4SLinus Torvalds static void 19301da177e4SLinus Torvalds he_tasklet(unsigned long data) 19311da177e4SLinus Torvalds { 19321da177e4SLinus Torvalds unsigned long flags; 19331da177e4SLinus Torvalds struct he_dev *he_dev = (struct he_dev *) data; 19341da177e4SLinus Torvalds int group, type; 19351da177e4SLinus Torvalds int updated = 0; 19361da177e4SLinus Torvalds 19371da177e4SLinus Torvalds HPRINTK("tasklet (0x%lx)\n", data); 19381da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 19391da177e4SLinus Torvalds 19401da177e4SLinus Torvalds while (he_dev->irq_head != he_dev->irq_tail) { 19411da177e4SLinus Torvalds ++updated; 19421da177e4SLinus Torvalds 19431da177e4SLinus Torvalds type = ITYPE_TYPE(he_dev->irq_head->isw); 19441da177e4SLinus Torvalds group = ITYPE_GROUP(he_dev->irq_head->isw); 19451da177e4SLinus Torvalds 19461da177e4SLinus Torvalds switch (type) { 19471da177e4SLinus Torvalds case ITYPE_RBRQ_THRESH: 19481da177e4SLinus Torvalds HPRINTK("rbrq%d threshold\n", group); 19491da177e4SLinus Torvalds /* fall through */ 19501da177e4SLinus Torvalds case ITYPE_RBRQ_TIMER: 19511d927870Schas williams - CONTRACTOR if (he_service_rbrq(he_dev, group)) 19521da177e4SLinus Torvalds he_service_rbpl(he_dev, group); 19531da177e4SLinus Torvalds break; 19541da177e4SLinus Torvalds case ITYPE_TBRQ_THRESH: 19551da177e4SLinus Torvalds HPRINTK("tbrq%d threshold\n", group); 19561da177e4SLinus Torvalds /* fall through */ 19571da177e4SLinus Torvalds case ITYPE_TPD_COMPLETE: 19581da177e4SLinus Torvalds he_service_tbrq(he_dev, group); 19591da177e4SLinus Torvalds break; 19601da177e4SLinus Torvalds case ITYPE_RBPL_THRESH: 19611da177e4SLinus Torvalds he_service_rbpl(he_dev, group); 19621da177e4SLinus Torvalds break; 19631da177e4SLinus Torvalds case ITYPE_RBPS_THRESH: 19641d927870Schas williams - CONTRACTOR /* shouldn't happen unless small buffers enabled */ 19651da177e4SLinus Torvalds break; 19661da177e4SLinus Torvalds case ITYPE_PHY: 19671da177e4SLinus Torvalds HPRINTK("phy interrupt\n"); 19681da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 19691da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 19701da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->interrupt) 19711da177e4SLinus Torvalds he_dev->atm_dev->phy->interrupt(he_dev->atm_dev); 19721da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 19731da177e4SLinus Torvalds #endif 19741da177e4SLinus Torvalds break; 19751da177e4SLinus Torvalds case ITYPE_OTHER: 19761da177e4SLinus Torvalds switch (type|group) { 19771da177e4SLinus Torvalds case ITYPE_PARITY: 19781da177e4SLinus Torvalds hprintk("parity error\n"); 19791da177e4SLinus Torvalds break; 19801da177e4SLinus Torvalds case ITYPE_ABORT: 19811da177e4SLinus Torvalds hprintk("abort 0x%x\n", he_readl(he_dev, ABORT_ADDR)); 19821da177e4SLinus Torvalds break; 19831da177e4SLinus Torvalds } 19841da177e4SLinus Torvalds break; 19851da177e4SLinus Torvalds case ITYPE_TYPE(ITYPE_INVALID): 19861da177e4SLinus Torvalds /* see 8.1.1 -- check all queues */ 19871da177e4SLinus Torvalds 19881da177e4SLinus Torvalds HPRINTK("isw not updated 0x%x\n", he_dev->irq_head->isw); 19891da177e4SLinus Torvalds 19901da177e4SLinus Torvalds he_service_rbrq(he_dev, 0); 19911da177e4SLinus Torvalds he_service_rbpl(he_dev, 0); 19921da177e4SLinus Torvalds he_service_tbrq(he_dev, 0); 19931da177e4SLinus Torvalds break; 19941da177e4SLinus Torvalds default: 19951da177e4SLinus Torvalds hprintk("bad isw 0x%x?\n", he_dev->irq_head->isw); 19961da177e4SLinus Torvalds } 19971da177e4SLinus Torvalds 19981da177e4SLinus Torvalds he_dev->irq_head->isw = ITYPE_INVALID; 19991da177e4SLinus Torvalds 20001da177e4SLinus Torvalds he_dev->irq_head = (struct he_irq *) NEXT_ENTRY(he_dev->irq_base, he_dev->irq_head, IRQ_MASK); 20011da177e4SLinus Torvalds } 20021da177e4SLinus Torvalds 20031da177e4SLinus Torvalds if (updated) { 20041da177e4SLinus Torvalds if (updated > he_dev->irq_peak) 20051da177e4SLinus Torvalds he_dev->irq_peak = updated; 20061da177e4SLinus Torvalds 20071da177e4SLinus Torvalds he_writel(he_dev, 20081da177e4SLinus Torvalds IRQ_SIZE(CONFIG_IRQ_SIZE) | 20091da177e4SLinus Torvalds IRQ_THRESH(CONFIG_IRQ_THRESH) | 20101da177e4SLinus Torvalds IRQ_TAIL(he_dev->irq_tail), IRQ0_HEAD); 20111da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata; flush posted writes */ 20121da177e4SLinus Torvalds } 20131da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 20141da177e4SLinus Torvalds } 20151da177e4SLinus Torvalds 20161da177e4SLinus Torvalds static irqreturn_t 20177d12e780SDavid Howells he_irq_handler(int irq, void *dev_id) 20181da177e4SLinus Torvalds { 20191da177e4SLinus Torvalds unsigned long flags; 20201da177e4SLinus Torvalds struct he_dev *he_dev = (struct he_dev * )dev_id; 20211da177e4SLinus Torvalds int handled = 0; 20221da177e4SLinus Torvalds 20231da177e4SLinus Torvalds if (he_dev == NULL) 20241da177e4SLinus Torvalds return IRQ_NONE; 20251da177e4SLinus Torvalds 20261da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 20271da177e4SLinus Torvalds 20281da177e4SLinus Torvalds he_dev->irq_tail = (struct he_irq *) (((unsigned long)he_dev->irq_base) | 20291da177e4SLinus Torvalds (*he_dev->irq_tailoffset << 2)); 20301da177e4SLinus Torvalds 20311da177e4SLinus Torvalds if (he_dev->irq_tail == he_dev->irq_head) { 20321da177e4SLinus Torvalds HPRINTK("tailoffset not updated?\n"); 20331da177e4SLinus Torvalds he_dev->irq_tail = (struct he_irq *) ((unsigned long)he_dev->irq_base | 20341da177e4SLinus Torvalds ((he_readl(he_dev, IRQ0_BASE) & IRQ_MASK) << 2)); 20351da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata */ 20361da177e4SLinus Torvalds } 20371da177e4SLinus Torvalds 20381da177e4SLinus Torvalds #ifdef DEBUG 20391da177e4SLinus Torvalds if (he_dev->irq_head == he_dev->irq_tail /* && !IRQ_PENDING */) 20401da177e4SLinus Torvalds hprintk("spurious (or shared) interrupt?\n"); 20411da177e4SLinus Torvalds #endif 20421da177e4SLinus Torvalds 20431da177e4SLinus Torvalds if (he_dev->irq_head != he_dev->irq_tail) { 20441da177e4SLinus Torvalds handled = 1; 20451da177e4SLinus Torvalds tasklet_schedule(&he_dev->tasklet); 20461da177e4SLinus Torvalds he_writel(he_dev, INT_CLEAR_A, INT_FIFO); /* clear interrupt */ 20471da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* flush posted writes */ 20481da177e4SLinus Torvalds } 20491da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 20501da177e4SLinus Torvalds return IRQ_RETVAL(handled); 20511da177e4SLinus Torvalds 20521da177e4SLinus Torvalds } 20531da177e4SLinus Torvalds 20541da177e4SLinus Torvalds static __inline__ void 20551da177e4SLinus Torvalds __enqueue_tpd(struct he_dev *he_dev, struct he_tpd *tpd, unsigned cid) 20561da177e4SLinus Torvalds { 20571da177e4SLinus Torvalds struct he_tpdrq *new_tail; 20581da177e4SLinus Torvalds 20591da177e4SLinus Torvalds HPRINTK("tpdrq %p cid 0x%x -> tpdrq_tail %p\n", 20601da177e4SLinus Torvalds tpd, cid, he_dev->tpdrq_tail); 20611da177e4SLinus Torvalds 20621da177e4SLinus Torvalds /* new_tail = he_dev->tpdrq_tail; */ 20631da177e4SLinus Torvalds new_tail = (struct he_tpdrq *) ((unsigned long) he_dev->tpdrq_base | 20641da177e4SLinus Torvalds TPDRQ_MASK(he_dev->tpdrq_tail+1)); 20651da177e4SLinus Torvalds 20661da177e4SLinus Torvalds /* 20671da177e4SLinus Torvalds * check to see if we are about to set the tail == head 20681da177e4SLinus Torvalds * if true, update the head pointer from the adapter 20691da177e4SLinus Torvalds * to see if this is really the case (reading the queue 20701da177e4SLinus Torvalds * head for every enqueue would be unnecessarily slow) 20711da177e4SLinus Torvalds */ 20721da177e4SLinus Torvalds 20731da177e4SLinus Torvalds if (new_tail == he_dev->tpdrq_head) { 20741da177e4SLinus Torvalds he_dev->tpdrq_head = (struct he_tpdrq *) 20751da177e4SLinus Torvalds (((unsigned long)he_dev->tpdrq_base) | 20761da177e4SLinus Torvalds TPDRQ_MASK(he_readl(he_dev, TPDRQ_B_H))); 20771da177e4SLinus Torvalds 20781da177e4SLinus Torvalds if (new_tail == he_dev->tpdrq_head) { 2079d730e103SChas Williams int slot; 2080d730e103SChas Williams 20811da177e4SLinus Torvalds hprintk("tpdrq full (cid 0x%x)\n", cid); 20821da177e4SLinus Torvalds /* 20831da177e4SLinus Torvalds * FIXME 20841da177e4SLinus Torvalds * push tpd onto a transmit backlog queue 20851da177e4SLinus Torvalds * after service_tbrq, service the backlog 20861da177e4SLinus Torvalds * for now, we just drop the pdu 20871da177e4SLinus Torvalds */ 2088d730e103SChas Williams for (slot = 0; slot < TPD_MAXIOV; ++slot) { 2089d730e103SChas Williams if (tpd->iovec[slot].addr) 2090ede58ef2Schas williams - CONTRACTOR dma_unmap_single(&he_dev->pci_dev->dev, 2091d730e103SChas Williams tpd->iovec[slot].addr, 2092d730e103SChas Williams tpd->iovec[slot].len & TPD_LEN_MASK, 2093ede58ef2Schas williams - CONTRACTOR DMA_TO_DEVICE); 2094d730e103SChas Williams } 20951da177e4SLinus Torvalds if (tpd->skb) { 20961da177e4SLinus Torvalds if (tpd->vcc->pop) 20971da177e4SLinus Torvalds tpd->vcc->pop(tpd->vcc, tpd->skb); 20981da177e4SLinus Torvalds else 20991da177e4SLinus Torvalds dev_kfree_skb_any(tpd->skb); 21001da177e4SLinus Torvalds atomic_inc(&tpd->vcc->stats->tx_err); 21011da177e4SLinus Torvalds } 2102ede58ef2Schas williams - CONTRACTOR dma_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); 21031da177e4SLinus Torvalds return; 21041da177e4SLinus Torvalds } 21051da177e4SLinus Torvalds } 21061da177e4SLinus Torvalds 21071da177e4SLinus Torvalds /* 2.1.5 transmit packet descriptor ready queue */ 21081da177e4SLinus Torvalds list_add_tail(&tpd->entry, &he_dev->outstanding_tpds); 21091da177e4SLinus Torvalds he_dev->tpdrq_tail->tpd = TPD_ADDR(tpd->status); 21101da177e4SLinus Torvalds he_dev->tpdrq_tail->cid = cid; 21111da177e4SLinus Torvalds wmb(); 21121da177e4SLinus Torvalds 21131da177e4SLinus Torvalds he_dev->tpdrq_tail = new_tail; 21141da177e4SLinus Torvalds 21151da177e4SLinus Torvalds he_writel(he_dev, TPDRQ_MASK(he_dev->tpdrq_tail), TPDRQ_T); 21161da177e4SLinus Torvalds (void) he_readl(he_dev, TPDRQ_T); /* flush posted writes */ 21171da177e4SLinus Torvalds } 21181da177e4SLinus Torvalds 21191da177e4SLinus Torvalds static int 21201da177e4SLinus Torvalds he_open(struct atm_vcc *vcc) 21211da177e4SLinus Torvalds { 21221da177e4SLinus Torvalds unsigned long flags; 21231da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 21241da177e4SLinus Torvalds struct he_vcc *he_vcc; 21251da177e4SLinus Torvalds int err = 0; 21261da177e4SLinus Torvalds unsigned cid, rsr0, rsr1, rsr4, tsr0, tsr0_aal, tsr4, period, reg, clock; 21271da177e4SLinus Torvalds short vpi = vcc->vpi; 21281da177e4SLinus Torvalds int vci = vcc->vci; 21291da177e4SLinus Torvalds 21301da177e4SLinus Torvalds if (vci == ATM_VCI_UNSPEC || vpi == ATM_VPI_UNSPEC) 21311da177e4SLinus Torvalds return 0; 21321da177e4SLinus Torvalds 21331da177e4SLinus Torvalds HPRINTK("open vcc %p %d.%d\n", vcc, vpi, vci); 21341da177e4SLinus Torvalds 21351da177e4SLinus Torvalds set_bit(ATM_VF_ADDR, &vcc->flags); 21361da177e4SLinus Torvalds 21371da177e4SLinus Torvalds cid = he_mkcid(he_dev, vpi, vci); 21381da177e4SLinus Torvalds 21395cbded58SRobert P. J. Day he_vcc = kmalloc(sizeof(struct he_vcc), GFP_ATOMIC); 21401da177e4SLinus Torvalds if (he_vcc == NULL) { 21411da177e4SLinus Torvalds hprintk("unable to allocate he_vcc during open\n"); 21421da177e4SLinus Torvalds return -ENOMEM; 21431da177e4SLinus Torvalds } 21441da177e4SLinus Torvalds 2145e623d625Schas williams - CONTRACTOR INIT_LIST_HEAD(&he_vcc->buffers); 21461da177e4SLinus Torvalds he_vcc->pdu_len = 0; 21471da177e4SLinus Torvalds he_vcc->rc_index = -1; 21481da177e4SLinus Torvalds 21491da177e4SLinus Torvalds init_waitqueue_head(&he_vcc->rx_waitq); 21501da177e4SLinus Torvalds init_waitqueue_head(&he_vcc->tx_waitq); 21511da177e4SLinus Torvalds 21521da177e4SLinus Torvalds vcc->dev_data = he_vcc; 21531da177e4SLinus Torvalds 21541da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE) { 21551da177e4SLinus Torvalds int pcr_goal; 21561da177e4SLinus Torvalds 21571da177e4SLinus Torvalds pcr_goal = atm_pcr_goal(&vcc->qos.txtp); 21581da177e4SLinus Torvalds if (pcr_goal == 0) 21591da177e4SLinus Torvalds pcr_goal = he_dev->atm_dev->link_rate; 21601da177e4SLinus Torvalds if (pcr_goal < 0) /* means round down, technically */ 21611da177e4SLinus Torvalds pcr_goal = -pcr_goal; 21621da177e4SLinus Torvalds 21631da177e4SLinus Torvalds HPRINTK("open tx cid 0x%x pcr_goal %d\n", cid, pcr_goal); 21641da177e4SLinus Torvalds 21651da177e4SLinus Torvalds switch (vcc->qos.aal) { 21661da177e4SLinus Torvalds case ATM_AAL5: 21671da177e4SLinus Torvalds tsr0_aal = TSR0_AAL5; 21681da177e4SLinus Torvalds tsr4 = TSR4_AAL5; 21691da177e4SLinus Torvalds break; 21701da177e4SLinus Torvalds case ATM_AAL0: 21711da177e4SLinus Torvalds tsr0_aal = TSR0_AAL0_SDU; 21721da177e4SLinus Torvalds tsr4 = TSR4_AAL0_SDU; 21731da177e4SLinus Torvalds break; 21741da177e4SLinus Torvalds default: 21751da177e4SLinus Torvalds err = -EINVAL; 21761da177e4SLinus Torvalds goto open_failed; 21771da177e4SLinus Torvalds } 21781da177e4SLinus Torvalds 21791da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 21801da177e4SLinus Torvalds tsr0 = he_readl_tsr0(he_dev, cid); 21811da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 21821da177e4SLinus Torvalds 21831da177e4SLinus Torvalds if (TSR0_CONN_STATE(tsr0) != 0) { 21841da177e4SLinus Torvalds hprintk("cid 0x%x not idle (tsr0 = 0x%x)\n", cid, tsr0); 21851da177e4SLinus Torvalds err = -EBUSY; 21861da177e4SLinus Torvalds goto open_failed; 21871da177e4SLinus Torvalds } 21881da177e4SLinus Torvalds 21891da177e4SLinus Torvalds switch (vcc->qos.txtp.traffic_class) { 21901da177e4SLinus Torvalds case ATM_UBR: 21911da177e4SLinus Torvalds /* 2.3.3.1 open connection ubr */ 21921da177e4SLinus Torvalds 21931da177e4SLinus Torvalds tsr0 = TSR0_UBR | TSR0_GROUP(0) | tsr0_aal | 21941da177e4SLinus Torvalds TSR0_USE_WMIN | TSR0_UPDATE_GER; 21951da177e4SLinus Torvalds break; 21961da177e4SLinus Torvalds 21971da177e4SLinus Torvalds case ATM_CBR: 21981da177e4SLinus Torvalds /* 2.3.3.2 open connection cbr */ 21991da177e4SLinus Torvalds 22001da177e4SLinus Torvalds /* 8.2.3 cbr scheduler wrap problem -- limit to 90% total link rate */ 22011da177e4SLinus Torvalds if ((he_dev->total_bw + pcr_goal) 22021da177e4SLinus Torvalds > (he_dev->atm_dev->link_rate * 9 / 10)) 22031da177e4SLinus Torvalds { 22041da177e4SLinus Torvalds err = -EBUSY; 22051da177e4SLinus Torvalds goto open_failed; 22061da177e4SLinus Torvalds } 22071da177e4SLinus Torvalds 22081da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); /* also protects he_dev->cs_stper[] */ 22091da177e4SLinus Torvalds 22101da177e4SLinus Torvalds /* find an unused cs_stper register */ 22111da177e4SLinus Torvalds for (reg = 0; reg < HE_NUM_CS_STPER; ++reg) 22121da177e4SLinus Torvalds if (he_dev->cs_stper[reg].inuse == 0 || 22131da177e4SLinus Torvalds he_dev->cs_stper[reg].pcr == pcr_goal) 22141da177e4SLinus Torvalds break; 22151da177e4SLinus Torvalds 22161da177e4SLinus Torvalds if (reg == HE_NUM_CS_STPER) { 22171da177e4SLinus Torvalds err = -EBUSY; 22181da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22191da177e4SLinus Torvalds goto open_failed; 22201da177e4SLinus Torvalds } 22211da177e4SLinus Torvalds 22221da177e4SLinus Torvalds he_dev->total_bw += pcr_goal; 22231da177e4SLinus Torvalds 22241da177e4SLinus Torvalds he_vcc->rc_index = reg; 22251da177e4SLinus Torvalds ++he_dev->cs_stper[reg].inuse; 22261da177e4SLinus Torvalds he_dev->cs_stper[reg].pcr = pcr_goal; 22271da177e4SLinus Torvalds 22281da177e4SLinus Torvalds clock = he_is622(he_dev) ? 66667000 : 50000000; 22291da177e4SLinus Torvalds period = clock / pcr_goal; 22301da177e4SLinus Torvalds 22311da177e4SLinus Torvalds HPRINTK("rc_index = %d period = %d\n", 22321da177e4SLinus Torvalds reg, period); 22331da177e4SLinus Torvalds 22341da177e4SLinus Torvalds he_writel_mbox(he_dev, rate_to_atmf(period/2), 22351da177e4SLinus Torvalds CS_STPER0 + reg); 22361da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22371da177e4SLinus Torvalds 22381da177e4SLinus Torvalds tsr0 = TSR0_CBR | TSR0_GROUP(0) | tsr0_aal | 22391da177e4SLinus Torvalds TSR0_RC_INDEX(reg); 22401da177e4SLinus Torvalds 22411da177e4SLinus Torvalds break; 22421da177e4SLinus Torvalds default: 22431da177e4SLinus Torvalds err = -EINVAL; 22441da177e4SLinus Torvalds goto open_failed; 22451da177e4SLinus Torvalds } 22461da177e4SLinus Torvalds 22471da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 22481da177e4SLinus Torvalds 22491da177e4SLinus Torvalds he_writel_tsr0(he_dev, tsr0, cid); 22501da177e4SLinus Torvalds he_writel_tsr4(he_dev, tsr4 | 1, cid); 22511da177e4SLinus Torvalds he_writel_tsr1(he_dev, TSR1_MCR(rate_to_atmf(0)) | 22521da177e4SLinus Torvalds TSR1_PCR(rate_to_atmf(pcr_goal)), cid); 22531da177e4SLinus Torvalds he_writel_tsr2(he_dev, TSR2_ACR(rate_to_atmf(pcr_goal)), cid); 22541da177e4SLinus Torvalds he_writel_tsr9(he_dev, TSR9_OPEN_CONN, cid); 22551da177e4SLinus Torvalds 22561da177e4SLinus Torvalds he_writel_tsr3(he_dev, 0x0, cid); 22571da177e4SLinus Torvalds he_writel_tsr5(he_dev, 0x0, cid); 22581da177e4SLinus Torvalds he_writel_tsr6(he_dev, 0x0, cid); 22591da177e4SLinus Torvalds he_writel_tsr7(he_dev, 0x0, cid); 22601da177e4SLinus Torvalds he_writel_tsr8(he_dev, 0x0, cid); 22611da177e4SLinus Torvalds he_writel_tsr10(he_dev, 0x0, cid); 22621da177e4SLinus Torvalds he_writel_tsr11(he_dev, 0x0, cid); 22631da177e4SLinus Torvalds he_writel_tsr12(he_dev, 0x0, cid); 22641da177e4SLinus Torvalds he_writel_tsr13(he_dev, 0x0, cid); 22651da177e4SLinus Torvalds he_writel_tsr14(he_dev, 0x0, cid); 22661da177e4SLinus Torvalds (void) he_readl_tsr0(he_dev, cid); /* flush posted writes */ 22671da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22681da177e4SLinus Torvalds } 22691da177e4SLinus Torvalds 22701da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 22711da177e4SLinus Torvalds unsigned aal; 22721da177e4SLinus Torvalds 22731da177e4SLinus Torvalds HPRINTK("open rx cid 0x%x (rx_waitq %p)\n", cid, 22741da177e4SLinus Torvalds &HE_VCC(vcc)->rx_waitq); 22751da177e4SLinus Torvalds 22761da177e4SLinus Torvalds switch (vcc->qos.aal) { 22771da177e4SLinus Torvalds case ATM_AAL5: 22781da177e4SLinus Torvalds aal = RSR0_AAL5; 22791da177e4SLinus Torvalds break; 22801da177e4SLinus Torvalds case ATM_AAL0: 22811da177e4SLinus Torvalds aal = RSR0_RAWCELL; 22821da177e4SLinus Torvalds break; 22831da177e4SLinus Torvalds default: 22841da177e4SLinus Torvalds err = -EINVAL; 22851da177e4SLinus Torvalds goto open_failed; 22861da177e4SLinus Torvalds } 22871da177e4SLinus Torvalds 22881da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 22891da177e4SLinus Torvalds 22901da177e4SLinus Torvalds rsr0 = he_readl_rsr0(he_dev, cid); 22911da177e4SLinus Torvalds if (rsr0 & RSR0_OPEN_CONN) { 22921da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22931da177e4SLinus Torvalds 22941da177e4SLinus Torvalds hprintk("cid 0x%x not idle (rsr0 = 0x%x)\n", cid, rsr0); 22951da177e4SLinus Torvalds err = -EBUSY; 22961da177e4SLinus Torvalds goto open_failed; 22971da177e4SLinus Torvalds } 22981da177e4SLinus Torvalds 22991d927870Schas williams - CONTRACTOR rsr1 = RSR1_GROUP(0) | RSR1_RBPL_ONLY; 23001d927870Schas williams - CONTRACTOR rsr4 = RSR4_GROUP(0) | RSR4_RBPL_ONLY; 23011da177e4SLinus Torvalds rsr0 = vcc->qos.rxtp.traffic_class == ATM_UBR ? 23021da177e4SLinus Torvalds (RSR0_EPD_ENABLE|RSR0_PPD_ENABLE) : 0; 23031da177e4SLinus Torvalds 23041da177e4SLinus Torvalds #ifdef USE_CHECKSUM_HW 23051da177e4SLinus Torvalds if (vpi == 0 && vci >= ATM_NOT_RSV_VCI) 23061da177e4SLinus Torvalds rsr0 |= RSR0_TCP_CKSUM; 23071da177e4SLinus Torvalds #endif 23081da177e4SLinus Torvalds 23091da177e4SLinus Torvalds he_writel_rsr4(he_dev, rsr4, cid); 23101da177e4SLinus Torvalds he_writel_rsr1(he_dev, rsr1, cid); 23111da177e4SLinus Torvalds /* 5.1.11 last parameter initialized should be 23121da177e4SLinus Torvalds the open/closed indication in rsr0 */ 23131da177e4SLinus Torvalds he_writel_rsr0(he_dev, 23141da177e4SLinus Torvalds rsr0 | RSR0_START_PDU | RSR0_OPEN_CONN | aal, cid); 23151da177e4SLinus Torvalds (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */ 23161da177e4SLinus Torvalds 23171da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23181da177e4SLinus Torvalds } 23191da177e4SLinus Torvalds 23201da177e4SLinus Torvalds open_failed: 23211da177e4SLinus Torvalds 23221da177e4SLinus Torvalds if (err) { 23231da177e4SLinus Torvalds kfree(he_vcc); 23241da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 23251da177e4SLinus Torvalds } 23261da177e4SLinus Torvalds else 23271da177e4SLinus Torvalds set_bit(ATM_VF_READY, &vcc->flags); 23281da177e4SLinus Torvalds 23291da177e4SLinus Torvalds return err; 23301da177e4SLinus Torvalds } 23311da177e4SLinus Torvalds 23321da177e4SLinus Torvalds static void 23331da177e4SLinus Torvalds he_close(struct atm_vcc *vcc) 23341da177e4SLinus Torvalds { 23351da177e4SLinus Torvalds unsigned long flags; 23361da177e4SLinus Torvalds DECLARE_WAITQUEUE(wait, current); 23371da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 23381da177e4SLinus Torvalds struct he_tpd *tpd; 23391da177e4SLinus Torvalds unsigned cid; 23401da177e4SLinus Torvalds struct he_vcc *he_vcc = HE_VCC(vcc); 23411da177e4SLinus Torvalds #define MAX_RETRY 30 23421da177e4SLinus Torvalds int retry = 0, sleep = 1, tx_inuse; 23431da177e4SLinus Torvalds 23441da177e4SLinus Torvalds HPRINTK("close vcc %p %d.%d\n", vcc, vcc->vpi, vcc->vci); 23451da177e4SLinus Torvalds 23461da177e4SLinus Torvalds clear_bit(ATM_VF_READY, &vcc->flags); 23471da177e4SLinus Torvalds cid = he_mkcid(he_dev, vcc->vpi, vcc->vci); 23481da177e4SLinus Torvalds 23491da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 23501da177e4SLinus Torvalds int timeout; 23511da177e4SLinus Torvalds 23521da177e4SLinus Torvalds HPRINTK("close rx cid 0x%x\n", cid); 23531da177e4SLinus Torvalds 23541da177e4SLinus Torvalds /* 2.7.2.2 close receive operation */ 23551da177e4SLinus Torvalds 23561da177e4SLinus Torvalds /* wait for previous close (if any) to finish */ 23571da177e4SLinus Torvalds 23581da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 23591da177e4SLinus Torvalds while (he_readl(he_dev, RCC_STAT) & RCC_BUSY) { 23601da177e4SLinus Torvalds HPRINTK("close cid 0x%x RCC_BUSY\n", cid); 23611da177e4SLinus Torvalds udelay(250); 23621da177e4SLinus Torvalds } 23631da177e4SLinus Torvalds 23641da177e4SLinus Torvalds set_current_state(TASK_UNINTERRUPTIBLE); 23651da177e4SLinus Torvalds add_wait_queue(&he_vcc->rx_waitq, &wait); 23661da177e4SLinus Torvalds 23671da177e4SLinus Torvalds he_writel_rsr0(he_dev, RSR0_CLOSE_CONN, cid); 23681da177e4SLinus Torvalds (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */ 23691da177e4SLinus Torvalds he_writel_mbox(he_dev, cid, RXCON_CLOSE); 23701da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23711da177e4SLinus Torvalds 23721da177e4SLinus Torvalds timeout = schedule_timeout(30*HZ); 23731da177e4SLinus Torvalds 23741da177e4SLinus Torvalds remove_wait_queue(&he_vcc->rx_waitq, &wait); 23751da177e4SLinus Torvalds set_current_state(TASK_RUNNING); 23761da177e4SLinus Torvalds 23771da177e4SLinus Torvalds if (timeout == 0) 23781da177e4SLinus Torvalds hprintk("close rx timeout cid 0x%x\n", cid); 23791da177e4SLinus Torvalds 23801da177e4SLinus Torvalds HPRINTK("close rx cid 0x%x complete\n", cid); 23811da177e4SLinus Torvalds 23821da177e4SLinus Torvalds } 23831da177e4SLinus Torvalds 23841da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE) { 23851da177e4SLinus Torvalds volatile unsigned tsr4, tsr0; 23861da177e4SLinus Torvalds int timeout; 23871da177e4SLinus Torvalds 23881da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x\n", cid); 23891da177e4SLinus Torvalds 23901da177e4SLinus Torvalds /* 2.1.2 23911da177e4SLinus Torvalds * 23921da177e4SLinus Torvalds * ... the host must first stop queueing packets to the TPDRQ 23931da177e4SLinus Torvalds * on the connection to be closed, then wait for all outstanding 23941da177e4SLinus Torvalds * packets to be transmitted and their buffers returned to the 23951da177e4SLinus Torvalds * TBRQ. When the last packet on the connection arrives in the 23961da177e4SLinus Torvalds * TBRQ, the host issues the close command to the adapter. 23971da177e4SLinus Torvalds */ 23981da177e4SLinus Torvalds 2399504bb3b5Schas williams - CONTRACTOR while (((tx_inuse = atomic_read(&sk_atm(vcc)->sk_wmem_alloc)) > 1) && 24001da177e4SLinus Torvalds (retry < MAX_RETRY)) { 24011da177e4SLinus Torvalds msleep(sleep); 24021da177e4SLinus Torvalds if (sleep < 250) 24031da177e4SLinus Torvalds sleep = sleep * 2; 24041da177e4SLinus Torvalds 24051da177e4SLinus Torvalds ++retry; 24061da177e4SLinus Torvalds } 24071da177e4SLinus Torvalds 2408504bb3b5Schas williams - CONTRACTOR if (tx_inuse > 1) 24091da177e4SLinus Torvalds hprintk("close tx cid 0x%x tx_inuse = %d\n", cid, tx_inuse); 24101da177e4SLinus Torvalds 24111da177e4SLinus Torvalds /* 2.3.1.1 generic close operations with flush */ 24121da177e4SLinus Torvalds 24131da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 24141da177e4SLinus Torvalds he_writel_tsr4_upper(he_dev, TSR4_FLUSH_CONN, cid); 24151da177e4SLinus Torvalds /* also clears TSR4_SESSION_ENDED */ 24161da177e4SLinus Torvalds 24171da177e4SLinus Torvalds switch (vcc->qos.txtp.traffic_class) { 24181da177e4SLinus Torvalds case ATM_UBR: 24191da177e4SLinus Torvalds he_writel_tsr1(he_dev, 24201da177e4SLinus Torvalds TSR1_MCR(rate_to_atmf(200000)) 24211da177e4SLinus Torvalds | TSR1_PCR(0), cid); 24221da177e4SLinus Torvalds break; 24231da177e4SLinus Torvalds case ATM_CBR: 24241da177e4SLinus Torvalds he_writel_tsr14_upper(he_dev, TSR14_DELETE, cid); 24251da177e4SLinus Torvalds break; 24261da177e4SLinus Torvalds } 24271da177e4SLinus Torvalds (void) he_readl_tsr4(he_dev, cid); /* flush posted writes */ 24281da177e4SLinus Torvalds 24291da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 24301da177e4SLinus Torvalds if (tpd == NULL) { 24311da177e4SLinus Torvalds hprintk("close tx he_alloc_tpd failed cid 0x%x\n", cid); 24321da177e4SLinus Torvalds goto close_tx_incomplete; 24331da177e4SLinus Torvalds } 24341da177e4SLinus Torvalds tpd->status |= TPD_EOS | TPD_INT; 24351da177e4SLinus Torvalds tpd->skb = NULL; 24361da177e4SLinus Torvalds tpd->vcc = vcc; 24371da177e4SLinus Torvalds wmb(); 24381da177e4SLinus Torvalds 24391da177e4SLinus Torvalds set_current_state(TASK_UNINTERRUPTIBLE); 24401da177e4SLinus Torvalds add_wait_queue(&he_vcc->tx_waitq, &wait); 24411da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 24421da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 24431da177e4SLinus Torvalds 24441da177e4SLinus Torvalds timeout = schedule_timeout(30*HZ); 24451da177e4SLinus Torvalds 24461da177e4SLinus Torvalds remove_wait_queue(&he_vcc->tx_waitq, &wait); 24471da177e4SLinus Torvalds set_current_state(TASK_RUNNING); 24481da177e4SLinus Torvalds 24491da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 24501da177e4SLinus Torvalds 24511da177e4SLinus Torvalds if (timeout == 0) { 24521da177e4SLinus Torvalds hprintk("close tx timeout cid 0x%x\n", cid); 24531da177e4SLinus Torvalds goto close_tx_incomplete; 24541da177e4SLinus Torvalds } 24551da177e4SLinus Torvalds 24561da177e4SLinus Torvalds while (!((tsr4 = he_readl_tsr4(he_dev, cid)) & TSR4_SESSION_ENDED)) { 24571da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x !TSR4_SESSION_ENDED (tsr4 = 0x%x)\n", cid, tsr4); 24581da177e4SLinus Torvalds udelay(250); 24591da177e4SLinus Torvalds } 24601da177e4SLinus Torvalds 24611da177e4SLinus Torvalds while (TSR0_CONN_STATE(tsr0 = he_readl_tsr0(he_dev, cid)) != 0) { 24621da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x TSR0_CONN_STATE != 0 (tsr0 = 0x%x)\n", cid, tsr0); 24631da177e4SLinus Torvalds udelay(250); 24641da177e4SLinus Torvalds } 24651da177e4SLinus Torvalds 24661da177e4SLinus Torvalds close_tx_incomplete: 24671da177e4SLinus Torvalds 24681da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class == ATM_CBR) { 24691da177e4SLinus Torvalds int reg = he_vcc->rc_index; 24701da177e4SLinus Torvalds 24711da177e4SLinus Torvalds HPRINTK("cs_stper reg = %d\n", reg); 24721da177e4SLinus Torvalds 24731da177e4SLinus Torvalds if (he_dev->cs_stper[reg].inuse == 0) 24741da177e4SLinus Torvalds hprintk("cs_stper[%d].inuse = 0!\n", reg); 24751da177e4SLinus Torvalds else 24761da177e4SLinus Torvalds --he_dev->cs_stper[reg].inuse; 24771da177e4SLinus Torvalds 24781da177e4SLinus Torvalds he_dev->total_bw -= he_dev->cs_stper[reg].pcr; 24791da177e4SLinus Torvalds } 24801da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 24811da177e4SLinus Torvalds 24821da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x complete\n", cid); 24831da177e4SLinus Torvalds } 24841da177e4SLinus Torvalds 24851da177e4SLinus Torvalds kfree(he_vcc); 24861da177e4SLinus Torvalds 24871da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 24881da177e4SLinus Torvalds } 24891da177e4SLinus Torvalds 24901da177e4SLinus Torvalds static int 24911da177e4SLinus Torvalds he_send(struct atm_vcc *vcc, struct sk_buff *skb) 24921da177e4SLinus Torvalds { 24931da177e4SLinus Torvalds unsigned long flags; 24941da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 24951da177e4SLinus Torvalds unsigned cid = he_mkcid(he_dev, vcc->vpi, vcc->vci); 24961da177e4SLinus Torvalds struct he_tpd *tpd; 24971da177e4SLinus Torvalds #ifdef USE_SCATTERGATHER 24981da177e4SLinus Torvalds int i, slot = 0; 24991da177e4SLinus Torvalds #endif 25001da177e4SLinus Torvalds 25011da177e4SLinus Torvalds #define HE_TPD_BUFSIZE 0xffff 25021da177e4SLinus Torvalds 25031da177e4SLinus Torvalds HPRINTK("send %d.%d\n", vcc->vpi, vcc->vci); 25041da177e4SLinus Torvalds 25051da177e4SLinus Torvalds if ((skb->len > HE_TPD_BUFSIZE) || 25061da177e4SLinus Torvalds ((vcc->qos.aal == ATM_AAL0) && (skb->len != ATM_AAL0_SDU))) { 25071da177e4SLinus Torvalds hprintk("buffer too large (or small) -- %d bytes\n", skb->len ); 25081da177e4SLinus Torvalds if (vcc->pop) 25091da177e4SLinus Torvalds vcc->pop(vcc, skb); 25101da177e4SLinus Torvalds else 25111da177e4SLinus Torvalds dev_kfree_skb_any(skb); 25121da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 25131da177e4SLinus Torvalds return -EINVAL; 25141da177e4SLinus Torvalds } 25151da177e4SLinus Torvalds 25161da177e4SLinus Torvalds #ifndef USE_SCATTERGATHER 25171da177e4SLinus Torvalds if (skb_shinfo(skb)->nr_frags) { 25181da177e4SLinus Torvalds hprintk("no scatter/gather support\n"); 25191da177e4SLinus Torvalds if (vcc->pop) 25201da177e4SLinus Torvalds vcc->pop(vcc, skb); 25211da177e4SLinus Torvalds else 25221da177e4SLinus Torvalds dev_kfree_skb_any(skb); 25231da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 25241da177e4SLinus Torvalds return -EINVAL; 25251da177e4SLinus Torvalds } 25261da177e4SLinus Torvalds #endif 25271da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 25281da177e4SLinus Torvalds 25291da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 25301da177e4SLinus Torvalds if (tpd == NULL) { 25311da177e4SLinus Torvalds if (vcc->pop) 25321da177e4SLinus Torvalds vcc->pop(vcc, skb); 25331da177e4SLinus Torvalds else 25341da177e4SLinus Torvalds dev_kfree_skb_any(skb); 25351da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 25361da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 25371da177e4SLinus Torvalds return -ENOMEM; 25381da177e4SLinus Torvalds } 25391da177e4SLinus Torvalds 25401da177e4SLinus Torvalds if (vcc->qos.aal == ATM_AAL5) 25411da177e4SLinus Torvalds tpd->status |= TPD_CELLTYPE(TPD_USERCELL); 25421da177e4SLinus Torvalds else { 25431da177e4SLinus Torvalds char *pti_clp = (void *) (skb->data + 3); 25441da177e4SLinus Torvalds int clp, pti; 25451da177e4SLinus Torvalds 25461da177e4SLinus Torvalds pti = (*pti_clp & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT; 25471da177e4SLinus Torvalds clp = (*pti_clp & ATM_HDR_CLP); 25481da177e4SLinus Torvalds tpd->status |= TPD_CELLTYPE(pti); 25491da177e4SLinus Torvalds if (clp) 25501da177e4SLinus Torvalds tpd->status |= TPD_CLP; 25511da177e4SLinus Torvalds 25521da177e4SLinus Torvalds skb_pull(skb, ATM_AAL0_SDU - ATM_CELL_PAYLOAD); 25531da177e4SLinus Torvalds } 25541da177e4SLinus Torvalds 25551da177e4SLinus Torvalds #ifdef USE_SCATTERGATHER 2556ede58ef2Schas williams - CONTRACTOR tpd->iovec[slot].addr = dma_map_single(&he_dev->pci_dev->dev, skb->data, 2557ede58ef2Schas williams - CONTRACTOR skb_headlen(skb), DMA_TO_DEVICE); 2558e743d313SEric Dumazet tpd->iovec[slot].len = skb_headlen(skb); 25591da177e4SLinus Torvalds ++slot; 25601da177e4SLinus Torvalds 25611da177e4SLinus Torvalds for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 25621da177e4SLinus Torvalds skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; 25631da177e4SLinus Torvalds 25641da177e4SLinus Torvalds if (slot == TPD_MAXIOV) { /* queue tpd; start new tpd */ 25651da177e4SLinus Torvalds tpd->vcc = vcc; 25661da177e4SLinus Torvalds tpd->skb = NULL; /* not the last fragment 25671da177e4SLinus Torvalds so dont ->push() yet */ 25681da177e4SLinus Torvalds wmb(); 25691da177e4SLinus Torvalds 25701da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 25711da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 25721da177e4SLinus Torvalds if (tpd == NULL) { 25731da177e4SLinus Torvalds if (vcc->pop) 25741da177e4SLinus Torvalds vcc->pop(vcc, skb); 25751da177e4SLinus Torvalds else 25761da177e4SLinus Torvalds dev_kfree_skb_any(skb); 25771da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 25781da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 25791da177e4SLinus Torvalds return -ENOMEM; 25801da177e4SLinus Torvalds } 25811da177e4SLinus Torvalds tpd->status |= TPD_USERCELL; 25821da177e4SLinus Torvalds slot = 0; 25831da177e4SLinus Torvalds } 25841da177e4SLinus Torvalds 2585ede58ef2Schas williams - CONTRACTOR tpd->iovec[slot].addr = dma_map_single(&he_dev->pci_dev->dev, 25861da177e4SLinus Torvalds (void *) page_address(frag->page) + frag->page_offset, 2587ede58ef2Schas williams - CONTRACTOR frag->size, DMA_TO_DEVICE); 25881da177e4SLinus Torvalds tpd->iovec[slot].len = frag->size; 25891da177e4SLinus Torvalds ++slot; 25901da177e4SLinus Torvalds 25911da177e4SLinus Torvalds } 25921da177e4SLinus Torvalds 25931da177e4SLinus Torvalds tpd->iovec[slot - 1].len |= TPD_LST; 25941da177e4SLinus Torvalds #else 2595ede58ef2Schas williams - CONTRACTOR tpd->address0 = dma_map_single(&he_dev->pci_dev->dev, skb->data, skb->len, DMA_TO_DEVICE); 25961da177e4SLinus Torvalds tpd->length0 = skb->len | TPD_LST; 25971da177e4SLinus Torvalds #endif 25981da177e4SLinus Torvalds tpd->status |= TPD_INT; 25991da177e4SLinus Torvalds 26001da177e4SLinus Torvalds tpd->vcc = vcc; 26011da177e4SLinus Torvalds tpd->skb = skb; 26021da177e4SLinus Torvalds wmb(); 26031da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 26041da177e4SLinus Torvalds 26051da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 26061da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 26071da177e4SLinus Torvalds 26081da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx); 26091da177e4SLinus Torvalds 26101da177e4SLinus Torvalds return 0; 26111da177e4SLinus Torvalds } 26121da177e4SLinus Torvalds 26131da177e4SLinus Torvalds static int 26141da177e4SLinus Torvalds he_ioctl(struct atm_dev *atm_dev, unsigned int cmd, void __user *arg) 26151da177e4SLinus Torvalds { 26161da177e4SLinus Torvalds unsigned long flags; 26171da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 26181da177e4SLinus Torvalds struct he_ioctl_reg reg; 26191da177e4SLinus Torvalds int err = 0; 26201da177e4SLinus Torvalds 26211da177e4SLinus Torvalds switch (cmd) { 26221da177e4SLinus Torvalds case HE_GET_REG: 26231da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 26241da177e4SLinus Torvalds return -EPERM; 26251da177e4SLinus Torvalds 26261da177e4SLinus Torvalds if (copy_from_user(®, arg, 26271da177e4SLinus Torvalds sizeof(struct he_ioctl_reg))) 26281da177e4SLinus Torvalds return -EFAULT; 26291da177e4SLinus Torvalds 26301da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 26311da177e4SLinus Torvalds switch (reg.type) { 26321da177e4SLinus Torvalds case HE_REGTYPE_PCI: 2633e0c5567dSroel kluin if (reg.addr >= HE_REGMAP_SIZE) { 263428e84ab3SRobert T. Johnson err = -EINVAL; 263528e84ab3SRobert T. Johnson break; 263628e84ab3SRobert T. Johnson } 263728e84ab3SRobert T. Johnson 26381da177e4SLinus Torvalds reg.val = he_readl(he_dev, reg.addr); 26391da177e4SLinus Torvalds break; 26401da177e4SLinus Torvalds case HE_REGTYPE_RCM: 26411da177e4SLinus Torvalds reg.val = 26421da177e4SLinus Torvalds he_readl_rcm(he_dev, reg.addr); 26431da177e4SLinus Torvalds break; 26441da177e4SLinus Torvalds case HE_REGTYPE_TCM: 26451da177e4SLinus Torvalds reg.val = 26461da177e4SLinus Torvalds he_readl_tcm(he_dev, reg.addr); 26471da177e4SLinus Torvalds break; 26481da177e4SLinus Torvalds case HE_REGTYPE_MBOX: 26491da177e4SLinus Torvalds reg.val = 26501da177e4SLinus Torvalds he_readl_mbox(he_dev, reg.addr); 26511da177e4SLinus Torvalds break; 26521da177e4SLinus Torvalds default: 26531da177e4SLinus Torvalds err = -EINVAL; 26541da177e4SLinus Torvalds break; 26551da177e4SLinus Torvalds } 26561da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 26571da177e4SLinus Torvalds if (err == 0) 26581da177e4SLinus Torvalds if (copy_to_user(arg, ®, 26591da177e4SLinus Torvalds sizeof(struct he_ioctl_reg))) 26601da177e4SLinus Torvalds return -EFAULT; 26611da177e4SLinus Torvalds break; 26621da177e4SLinus Torvalds default: 26631da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 26641da177e4SLinus Torvalds if (atm_dev->phy && atm_dev->phy->ioctl) 26651da177e4SLinus Torvalds err = atm_dev->phy->ioctl(atm_dev, cmd, arg); 26661da177e4SLinus Torvalds #else /* CONFIG_ATM_HE_USE_SUNI */ 26671da177e4SLinus Torvalds err = -EINVAL; 26681da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 26691da177e4SLinus Torvalds break; 26701da177e4SLinus Torvalds } 26711da177e4SLinus Torvalds 26721da177e4SLinus Torvalds return err; 26731da177e4SLinus Torvalds } 26741da177e4SLinus Torvalds 26751da177e4SLinus Torvalds static void 26761da177e4SLinus Torvalds he_phy_put(struct atm_dev *atm_dev, unsigned char val, unsigned long addr) 26771da177e4SLinus Torvalds { 26781da177e4SLinus Torvalds unsigned long flags; 26791da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 26801da177e4SLinus Torvalds 26811da177e4SLinus Torvalds HPRINTK("phy_put(val 0x%x, addr 0x%lx)\n", val, addr); 26821da177e4SLinus Torvalds 26831da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 26841da177e4SLinus Torvalds he_writel(he_dev, val, FRAMER + (addr*4)); 26851da177e4SLinus Torvalds (void) he_readl(he_dev, FRAMER + (addr*4)); /* flush posted writes */ 26861da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 26871da177e4SLinus Torvalds } 26881da177e4SLinus Torvalds 26891da177e4SLinus Torvalds 26901da177e4SLinus Torvalds static unsigned char 26911da177e4SLinus Torvalds he_phy_get(struct atm_dev *atm_dev, unsigned long addr) 26921da177e4SLinus Torvalds { 26931da177e4SLinus Torvalds unsigned long flags; 26941da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 26951da177e4SLinus Torvalds unsigned reg; 26961da177e4SLinus Torvalds 26971da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 26981da177e4SLinus Torvalds reg = he_readl(he_dev, FRAMER + (addr*4)); 26991da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27001da177e4SLinus Torvalds 27011da177e4SLinus Torvalds HPRINTK("phy_get(addr 0x%lx) =0x%x\n", addr, reg); 27021da177e4SLinus Torvalds return reg; 27031da177e4SLinus Torvalds } 27041da177e4SLinus Torvalds 27051da177e4SLinus Torvalds static int 27061da177e4SLinus Torvalds he_proc_read(struct atm_dev *dev, loff_t *pos, char *page) 27071da177e4SLinus Torvalds { 27081da177e4SLinus Torvalds unsigned long flags; 27091da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(dev); 27101da177e4SLinus Torvalds int left, i; 27111da177e4SLinus Torvalds #ifdef notdef 27121da177e4SLinus Torvalds struct he_rbrq *rbrq_tail; 27131da177e4SLinus Torvalds struct he_tpdrq *tpdrq_head; 27141da177e4SLinus Torvalds int rbpl_head, rbpl_tail; 27151da177e4SLinus Torvalds #endif 27161da177e4SLinus Torvalds static long mcc = 0, oec = 0, dcc = 0, cec = 0; 27171da177e4SLinus Torvalds 27181da177e4SLinus Torvalds 27191da177e4SLinus Torvalds left = *pos; 27201da177e4SLinus Torvalds if (!left--) 2721900092a4SAdrian Bunk return sprintf(page, "ATM he driver\n"); 27221da177e4SLinus Torvalds 27231da177e4SLinus Torvalds if (!left--) 27241da177e4SLinus Torvalds return sprintf(page, "%s%s\n\n", 27251da177e4SLinus Torvalds he_dev->prod_id, he_dev->media & 0x40 ? "SM" : "MM"); 27261da177e4SLinus Torvalds 27271da177e4SLinus Torvalds if (!left--) 27281da177e4SLinus Torvalds return sprintf(page, "Mismatched Cells VPI/VCI Not Open Dropped Cells RCM Dropped Cells\n"); 27291da177e4SLinus Torvalds 27301da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 27311da177e4SLinus Torvalds mcc += he_readl(he_dev, MCC); 27321da177e4SLinus Torvalds oec += he_readl(he_dev, OEC); 27331da177e4SLinus Torvalds dcc += he_readl(he_dev, DCC); 27341da177e4SLinus Torvalds cec += he_readl(he_dev, CEC); 27351da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27361da177e4SLinus Torvalds 27371da177e4SLinus Torvalds if (!left--) 27381da177e4SLinus Torvalds return sprintf(page, "%16ld %16ld %13ld %17ld\n\n", 27391da177e4SLinus Torvalds mcc, oec, dcc, cec); 27401da177e4SLinus Torvalds 27411da177e4SLinus Torvalds if (!left--) 27421da177e4SLinus Torvalds return sprintf(page, "irq_size = %d inuse = ? peak = %d\n", 27431da177e4SLinus Torvalds CONFIG_IRQ_SIZE, he_dev->irq_peak); 27441da177e4SLinus Torvalds 27451da177e4SLinus Torvalds if (!left--) 27461da177e4SLinus Torvalds return sprintf(page, "tpdrq_size = %d inuse = ?\n", 27471da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE); 27481da177e4SLinus Torvalds 27491da177e4SLinus Torvalds if (!left--) 27501da177e4SLinus Torvalds return sprintf(page, "rbrq_size = %d inuse = ? peak = %d\n", 27511da177e4SLinus Torvalds CONFIG_RBRQ_SIZE, he_dev->rbrq_peak); 27521da177e4SLinus Torvalds 27531da177e4SLinus Torvalds if (!left--) 27541da177e4SLinus Torvalds return sprintf(page, "tbrq_size = %d peak = %d\n", 27551da177e4SLinus Torvalds CONFIG_TBRQ_SIZE, he_dev->tbrq_peak); 27561da177e4SLinus Torvalds 27571da177e4SLinus Torvalds 27581da177e4SLinus Torvalds #ifdef notdef 27591da177e4SLinus Torvalds rbpl_head = RBPL_MASK(he_readl(he_dev, G0_RBPL_S)); 27601da177e4SLinus Torvalds rbpl_tail = RBPL_MASK(he_readl(he_dev, G0_RBPL_T)); 27611da177e4SLinus Torvalds 27621da177e4SLinus Torvalds inuse = rbpl_head - rbpl_tail; 27631da177e4SLinus Torvalds if (inuse < 0) 27641da177e4SLinus Torvalds inuse += CONFIG_RBPL_SIZE * sizeof(struct he_rbp); 27651da177e4SLinus Torvalds inuse /= sizeof(struct he_rbp); 27661da177e4SLinus Torvalds 27671da177e4SLinus Torvalds if (!left--) 27681da177e4SLinus Torvalds return sprintf(page, "rbpl_size = %d inuse = %d\n\n", 27691da177e4SLinus Torvalds CONFIG_RBPL_SIZE, inuse); 27701da177e4SLinus Torvalds #endif 27711da177e4SLinus Torvalds 27721da177e4SLinus Torvalds if (!left--) 27731da177e4SLinus Torvalds return sprintf(page, "rate controller periods (cbr)\n pcr #vc\n"); 27741da177e4SLinus Torvalds 27751da177e4SLinus Torvalds for (i = 0; i < HE_NUM_CS_STPER; ++i) 27761da177e4SLinus Torvalds if (!left--) 27771da177e4SLinus Torvalds return sprintf(page, "cs_stper%-2d %8ld %3d\n", i, 27781da177e4SLinus Torvalds he_dev->cs_stper[i].pcr, 27791da177e4SLinus Torvalds he_dev->cs_stper[i].inuse); 27801da177e4SLinus Torvalds 27811da177e4SLinus Torvalds if (!left--) 27821da177e4SLinus Torvalds return sprintf(page, "total bw (cbr): %d (limit %d)\n", 27831da177e4SLinus Torvalds he_dev->total_bw, he_dev->atm_dev->link_rate * 10 / 9); 27841da177e4SLinus Torvalds 27851da177e4SLinus Torvalds return 0; 27861da177e4SLinus Torvalds } 27871da177e4SLinus Torvalds 27881da177e4SLinus Torvalds /* eeprom routines -- see 4.7 */ 27891da177e4SLinus Torvalds 27900ee897d4SAdrian Bunk static u8 read_prom_byte(struct he_dev *he_dev, int addr) 27911da177e4SLinus Torvalds { 27921da177e4SLinus Torvalds u32 val = 0, tmp_read = 0; 27931da177e4SLinus Torvalds int i, j = 0; 27941da177e4SLinus Torvalds u8 byte_read = 0; 27951da177e4SLinus Torvalds 27961da177e4SLinus Torvalds val = readl(he_dev->membase + HOST_CNTL); 27971da177e4SLinus Torvalds val &= 0xFFFFE0FF; 27981da177e4SLinus Torvalds 27991da177e4SLinus Torvalds /* Turn on write enable */ 28001da177e4SLinus Torvalds val |= 0x800; 28011da177e4SLinus Torvalds he_writel(he_dev, val, HOST_CNTL); 28021da177e4SLinus Torvalds 28031da177e4SLinus Torvalds /* Send READ instruction */ 280436fe55d6SAhmed S. Darwish for (i = 0; i < ARRAY_SIZE(readtab); i++) { 28051da177e4SLinus Torvalds he_writel(he_dev, val | readtab[i], HOST_CNTL); 28061da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28071da177e4SLinus Torvalds } 28081da177e4SLinus Torvalds 28091da177e4SLinus Torvalds /* Next, we need to send the byte address to read from */ 28101da177e4SLinus Torvalds for (i = 7; i >= 0; i--) { 28111da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL); 28121da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28131da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL); 28141da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28151da177e4SLinus Torvalds } 28161da177e4SLinus Torvalds 28171da177e4SLinus Torvalds j = 0; 28181da177e4SLinus Torvalds 28191da177e4SLinus Torvalds val &= 0xFFFFF7FF; /* Turn off write enable */ 28201da177e4SLinus Torvalds he_writel(he_dev, val, HOST_CNTL); 28211da177e4SLinus Torvalds 28221da177e4SLinus Torvalds /* Now, we can read data from the EEPROM by clocking it in */ 28231da177e4SLinus Torvalds for (i = 7; i >= 0; i--) { 28241da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++], HOST_CNTL); 28251da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28261da177e4SLinus Torvalds tmp_read = he_readl(he_dev, HOST_CNTL); 28271da177e4SLinus Torvalds byte_read |= (unsigned char) 28281da177e4SLinus Torvalds ((tmp_read & ID_DOUT) >> ID_DOFFSET << i); 28291da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++], HOST_CNTL); 28301da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28311da177e4SLinus Torvalds } 28321da177e4SLinus Torvalds 28331da177e4SLinus Torvalds he_writel(he_dev, val | ID_CS, HOST_CNTL); 28341da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28351da177e4SLinus Torvalds 28361da177e4SLinus Torvalds return byte_read; 28371da177e4SLinus Torvalds } 28381da177e4SLinus Torvalds 28391da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 28401da177e4SLinus Torvalds MODULE_AUTHOR("chas williams <chas@cmf.nrl.navy.mil>"); 28411da177e4SLinus Torvalds MODULE_DESCRIPTION("ForeRunnerHE ATM Adapter driver"); 28421da177e4SLinus Torvalds module_param(disable64, bool, 0); 28431da177e4SLinus Torvalds MODULE_PARM_DESC(disable64, "disable 64-bit pci bus transfers"); 28441da177e4SLinus Torvalds module_param(nvpibits, short, 0); 28451da177e4SLinus Torvalds MODULE_PARM_DESC(nvpibits, "numbers of bits for vpi (default 0)"); 28461da177e4SLinus Torvalds module_param(nvcibits, short, 0); 28471da177e4SLinus Torvalds MODULE_PARM_DESC(nvcibits, "numbers of bits for vci (default 12)"); 28481da177e4SLinus Torvalds module_param(rx_skb_reserve, short, 0); 28491da177e4SLinus Torvalds MODULE_PARM_DESC(rx_skb_reserve, "padding for receive skb (default 16)"); 28501da177e4SLinus Torvalds module_param(irq_coalesce, bool, 0); 28511da177e4SLinus Torvalds MODULE_PARM_DESC(irq_coalesce, "use interrupt coalescing (default 1)"); 28521da177e4SLinus Torvalds module_param(sdh, bool, 0); 28531da177e4SLinus Torvalds MODULE_PARM_DESC(sdh, "use SDH framing (default 0)"); 28541da177e4SLinus Torvalds 28551da177e4SLinus Torvalds static struct pci_device_id he_pci_tbl[] = { 2856fbaab958SPeter Huewe { PCI_VDEVICE(FORE, PCI_DEVICE_ID_FORE_HE), 0 }, 28571da177e4SLinus Torvalds { 0, } 28581da177e4SLinus Torvalds }; 28591da177e4SLinus Torvalds 28601da177e4SLinus Torvalds MODULE_DEVICE_TABLE(pci, he_pci_tbl); 28611da177e4SLinus Torvalds 28621da177e4SLinus Torvalds static struct pci_driver he_driver = { 28631da177e4SLinus Torvalds .name = "he", 28641da177e4SLinus Torvalds .probe = he_init_one, 28656c44512dSGreg Kroah-Hartman .remove = he_remove_one, 28661da177e4SLinus Torvalds .id_table = he_pci_tbl, 28671da177e4SLinus Torvalds }; 28681da177e4SLinus Torvalds 2869a2a69f0bSLibo Chen module_pci_driver(he_driver); 2870