1 /* atlx.c -- common functions for Attansic network drivers
3 * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
4 * Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
5 * Copyright(c) 2006 Jay Cliburn <jcliburn@gmail.com>
6 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
8 * Derived from Intel e1000 driver
9 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
16 * This program is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
21 * You should have received a copy of the GNU General Public License along with
22 * this program; if not, write to the Free Software Foundation, Inc., 59
23 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 /* Including this file like a header is a temporary hack, I promise. -- CHS */
30 #include <linux/device.h>
31 #include <linux/errno.h>
32 #include <linux/etherdevice.h>
34 #include <linux/netdevice.h>
35 #include <linux/socket.h>
36 #include <linux/sockios.h>
37 #include <linux/spinlock.h>
38 #include <linux/string.h>
39 #include <linux/types.h>
40 #include <linux/workqueue.h>
44 static struct atlx_spi_flash_dev flash_table[] = {
45 /* MFR_NAME WRSR READ PRGM WREN WRDI RDSR RDID SEC_ERS CHIP_ERS */
46 {"Atmel", 0x00, 0x03, 0x02, 0x06, 0x04, 0x05, 0x15, 0x52, 0x62},
47 {"SST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0x90, 0x20, 0x60},
48 {"ST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0xAB, 0xD8, 0xC7},
51 static int atlx_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
57 return atlx_mii_ioctl(netdev, ifr, cmd);
64 * atlx_set_mac - Change the Ethernet Address of the NIC
65 * @netdev: network interface device structure
66 * @p: pointer to an address structure
68 * Returns 0 on success, negative on failure
70 static int atlx_set_mac(struct net_device *netdev, void *p)
72 struct atlx_adapter *adapter = netdev_priv(netdev);
73 struct sockaddr *addr = p;
75 if (netif_running(netdev))
78 if (!is_valid_ether_addr(addr->sa_data))
79 return -EADDRNOTAVAIL;
81 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
82 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
84 atlx_set_mac_addr(&adapter->hw);
88 static void atlx_check_for_link(struct atlx_adapter *adapter)
90 struct net_device *netdev = adapter->netdev;
93 spin_lock(&adapter->lock);
94 adapter->phy_timer_pending = false;
95 atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
96 atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
97 spin_unlock(&adapter->lock);
99 /* notify upper layer link down ASAP */
100 if (!(phy_data & BMSR_LSTATUS)) {
102 if (netif_carrier_ok(netdev)) {
103 /* old link state: Up */
104 dev_info(&adapter->pdev->dev, "%s link is down\n",
106 adapter->link_speed = SPEED_0;
107 netif_carrier_off(netdev);
108 netif_stop_queue(netdev);
111 schedule_work(&adapter->link_chg_task);
115 * atlx_set_multi - Multicast and Promiscuous mode set
116 * @netdev: network interface device structure
118 * The set_multi entry point is called whenever the multicast address
119 * list or the network interface flags are updated. This routine is
120 * responsible for configuring the hardware for proper multicast,
121 * promiscuous mode, and all-multi behavior.
123 static void atlx_set_multi(struct net_device *netdev)
125 struct atlx_adapter *adapter = netdev_priv(netdev);
126 struct atlx_hw *hw = &adapter->hw;
127 struct dev_mc_list *mc_ptr;
131 /* Check for Promiscuous and All Multicast modes */
132 rctl = ioread32(hw->hw_addr + REG_MAC_CTRL);
133 if (netdev->flags & IFF_PROMISC)
134 rctl |= MAC_CTRL_PROMIS_EN;
135 else if (netdev->flags & IFF_ALLMULTI) {
136 rctl |= MAC_CTRL_MC_ALL_EN;
137 rctl &= ~MAC_CTRL_PROMIS_EN;
139 rctl &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN);
141 iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL);
143 /* clear the old settings from the multicast hash table */
144 iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
145 iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
147 /* compute mc addresses' hash value ,and put it into hash table */
148 for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
149 hash_value = atlx_hash_mc_addr(hw, mc_ptr->dmi_addr);
150 atlx_hash_set(hw, hash_value);
155 * atlx_irq_enable - Enable default interrupt generation settings
156 * @adapter: board private structure
158 static void atlx_irq_enable(struct atlx_adapter *adapter)
160 iowrite32(IMR_NORMAL_MASK, adapter->hw.hw_addr + REG_IMR);
161 ioread32(adapter->hw.hw_addr + REG_IMR);
165 * atlx_irq_disable - Mask off interrupt generation on the NIC
166 * @adapter: board private structure
168 static void atlx_irq_disable(struct atlx_adapter *adapter)
170 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
171 ioread32(adapter->hw.hw_addr + REG_IMR);
172 synchronize_irq(adapter->pdev->irq);
175 static void atlx_clear_phy_int(struct atlx_adapter *adapter)
180 spin_lock_irqsave(&adapter->lock, flags);
181 atlx_read_phy_reg(&adapter->hw, 19, &phy_data);
182 spin_unlock_irqrestore(&adapter->lock, flags);
186 * atlx_get_stats - Get System Network Statistics
187 * @netdev: network interface device structure
189 * Returns the address of the device statistics structure.
190 * The statistics are actually updated from the timer callback.
192 static struct net_device_stats *atlx_get_stats(struct net_device *netdev)
194 struct atlx_adapter *adapter = netdev_priv(netdev);
195 return &adapter->net_stats;
199 * atlx_tx_timeout - Respond to a Tx Hang
200 * @netdev: network interface device structure
202 static void atlx_tx_timeout(struct net_device *netdev)
204 struct atlx_adapter *adapter = netdev_priv(netdev);
205 /* Do the reset outside of interrupt context */
206 schedule_work(&adapter->tx_timeout_task);
210 * atlx_link_chg_task - deal with link change event Out of interrupt context
212 static void atlx_link_chg_task(struct work_struct *work)
214 struct atlx_adapter *adapter;
217 adapter = container_of(work, struct atlx_adapter, link_chg_task);
219 spin_lock_irqsave(&adapter->lock, flags);
220 atlx_check_link(adapter);
221 spin_unlock_irqrestore(&adapter->lock, flags);
224 static void atlx_vlan_rx_register(struct net_device *netdev,
225 struct vlan_group *grp)
227 struct atlx_adapter *adapter = netdev_priv(netdev);
231 spin_lock_irqsave(&adapter->lock, flags);
232 /* atlx_irq_disable(adapter); FIXME: confirm/remove */
233 adapter->vlgrp = grp;
236 /* enable VLAN tag insert/strip */
237 ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
238 ctrl |= MAC_CTRL_RMV_VLAN;
239 iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
241 /* disable VLAN tag insert/strip */
242 ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
243 ctrl &= ~MAC_CTRL_RMV_VLAN;
244 iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
247 /* atlx_irq_enable(adapter); FIXME */
248 spin_unlock_irqrestore(&adapter->lock, flags);
251 static void atlx_restore_vlan(struct atlx_adapter *adapter)
253 atlx_vlan_rx_register(adapter->netdev, adapter->vlgrp);
257 * This is the only thing that needs to be changed to adjust the
258 * maximum number of ports that the driver can manage.
260 #define ATL1_MAX_NIC 4
262 #define OPTION_UNSET -1
263 #define OPTION_DISABLED 0
264 #define OPTION_ENABLED 1
266 #define ATL1_PARAM_INIT { [0 ... ATL1_MAX_NIC] = OPTION_UNSET }
269 * Interrupt Moderate Timer in units of 2 us
271 * Valid Range: 10-65535
273 * Default Value: 100 (200us)
275 static int __devinitdata int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
276 static int num_int_mod_timer;
277 module_param_array_named(int_mod_timer, int_mod_timer, int,
278 &num_int_mod_timer, 0);
279 MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer");
292 static int __devinitdata flash_vendor[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
293 static int num_flash_vendor;
294 module_param_array_named(flash_vendor, flash_vendor, int, &num_flash_vendor, 0);
295 MODULE_PARM_DESC(flash_vendor, "SPI flash vendor");
297 #define DEFAULT_INT_MOD_CNT 100 /* 200us */
298 #define MAX_INT_MOD_CNT 65000
299 #define MIN_INT_MOD_CNT 50
301 #define FLASH_VENDOR_DEFAULT 0
302 #define FLASH_VENDOR_MIN 0
303 #define FLASH_VENDOR_MAX 2
306 enum { enable_option, range_option, list_option } type;
311 struct { /* range_option info */
315 struct { /* list_option info */
317 struct atl1_opt_list {
325 static int __devinit atl1_validate_option(int *value, struct atl1_option *opt,
326 struct pci_dev *pdev)
328 if (*value == OPTION_UNSET) {
337 dev_info(&pdev->dev, "%s enabled\n", opt->name);
339 case OPTION_DISABLED:
340 dev_info(&pdev->dev, "%s disabled\n", opt->name);
345 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
346 dev_info(&pdev->dev, "%s set to %i\n", opt->name,
353 struct atl1_opt_list *ent;
355 for (i = 0; i < opt->arg.l.nr; i++) {
356 ent = &opt->arg.l.p[i];
357 if (*value == ent->i) {
358 if (ent->str[0] != '\0')
359 dev_info(&pdev->dev, "%s\n",
371 dev_info(&pdev->dev, "invalid %s specified (%i) %s\n",
372 opt->name, *value, opt->err);
378 * atl1_check_options - Range Checking for Command Line Parameters
379 * @adapter: board private structure
381 * This routine checks all command line parameters for valid user
382 * input. If an invalid value is given, or if no user specified
383 * value exists, a default value is used. The final value is stored
384 * in a variable in the adapter structure.
386 void __devinit atl1_check_options(struct atl1_adapter *adapter)
388 struct pci_dev *pdev = adapter->pdev;
389 int bd = adapter->bd_number;
390 if (bd >= ATL1_MAX_NIC) {
391 dev_notice(&pdev->dev, "no configuration for board#%i\n", bd);
392 dev_notice(&pdev->dev, "using defaults for all values\n");
394 { /* Interrupt Moderate Timer */
395 struct atl1_option opt = {
396 .type = range_option,
397 .name = "Interrupt Moderator Timer",
398 .err = "using default of "
399 __MODULE_STRING(DEFAULT_INT_MOD_CNT),
400 .def = DEFAULT_INT_MOD_CNT,
401 .arg = {.r = {.min = MIN_INT_MOD_CNT,
402 .max = MAX_INT_MOD_CNT} }
405 if (num_int_mod_timer > bd) {
406 val = int_mod_timer[bd];
407 atl1_validate_option(&val, &opt, pdev);
408 adapter->imt = (u16) val;
410 adapter->imt = (u16) (opt.def);
414 struct atl1_option opt = {
415 .type = range_option,
416 .name = "SPI Flash Vendor",
417 .err = "using default of "
418 __MODULE_STRING(FLASH_VENDOR_DEFAULT),
419 .def = DEFAULT_INT_MOD_CNT,
420 .arg = {.r = {.min = FLASH_VENDOR_MIN,
421 .max = FLASH_VENDOR_MAX} }
424 if (num_flash_vendor > bd) {
425 val = flash_vendor[bd];
426 atl1_validate_option(&val, &opt, pdev);
427 adapter->hw.flash_vendor = (u8) val;
429 adapter->hw.flash_vendor = (u8) (opt.def);