1 /*******************************************************************************
3 Intel PRO/100 Linux driver
4 Copyright(c) 1999 - 2006 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
30 * e100.c: Intel(R) PRO/100 ethernet driver
32 * (Re)written 2003 by scott.feldman@intel.com. Based loosely on
33 * original e100 driver, but better described as a munging of
34 * e100, e1000, eepro100, tg3, 8139cp, and other drivers.
37 * Intel 8255x 10/100 Mbps Ethernet Controller Family,
38 * Open Source Software Developers Manual,
39 * http://sourceforge.net/projects/e1000
46 * The driver supports Intel(R) 10/100 Mbps PCI Fast Ethernet
47 * controller family, which includes the 82557, 82558, 82559, 82550,
48 * 82551, and 82562 devices. 82558 and greater controllers
49 * integrate the Intel 82555 PHY. The controllers are used in
50 * server and client network interface cards, as well as in
51 * LAN-On-Motherboard (LOM), CardBus, MiniPCI, and ICHx
52 * configurations. 8255x supports a 32-bit linear addressing
53 * mode and operates at 33Mhz PCI clock rate.
55 * II. Driver Operation
57 * Memory-mapped mode is used exclusively to access the device's
58 * shared-memory structure, the Control/Status Registers (CSR). All
59 * setup, configuration, and control of the device, including queuing
60 * of Tx, Rx, and configuration commands is through the CSR.
61 * cmd_lock serializes accesses to the CSR command register. cb_lock
62 * protects the shared Command Block List (CBL).
64 * 8255x is highly MII-compliant and all access to the PHY go
65 * through the Management Data Interface (MDI). Consequently, the
66 * driver leverages the mii.c library shared with other MII-compliant
69 * Big- and Little-Endian byte order as well as 32- and 64-bit
70 * archs are supported. Weak-ordered memory and non-cache-coherent
71 * archs are supported.
75 * A Tx skb is mapped and hangs off of a TCB. TCBs are linked
76 * together in a fixed-size ring (CBL) thus forming the flexible mode
77 * memory structure. A TCB marked with the suspend-bit indicates
78 * the end of the ring. The last TCB processed suspends the
79 * controller, and the controller can be restarted by issue a CU
80 * resume command to continue from the suspend point, or a CU start
81 * command to start at a given position in the ring.
83 * Non-Tx commands (config, multicast setup, etc) are linked
84 * into the CBL ring along with Tx commands. The common structure
85 * used for both Tx and non-Tx commands is the Command Block (CB).
87 * cb_to_use is the next CB to use for queuing a command; cb_to_clean
88 * is the next CB to check for completion; cb_to_send is the first
89 * CB to start on in case of a previous failure to resume. CB clean
90 * up happens in interrupt context in response to a CU interrupt.
91 * cbs_avail keeps track of number of free CB resources available.
93 * Hardware padding of short packets to minimum packet size is
94 * enabled. 82557 pads with 7Eh, while the later controllers pad
99 * The Receive Frame Area (RFA) comprises a ring of Receive Frame
100 * Descriptors (RFD) + data buffer, thus forming the simplified mode
101 * memory structure. Rx skbs are allocated to contain both the RFD
102 * and the data buffer, but the RFD is pulled off before the skb is
103 * indicated. The data buffer is aligned such that encapsulated
104 * protocol headers are u32-aligned. Since the RFD is part of the
105 * mapped shared memory, and completion status is contained within
106 * the RFD, the RFD must be dma_sync'ed to maintain a consistent
107 * view from software and hardware.
109 * In order to keep updates to the RFD link field from colliding with
110 * hardware writes to mark packets complete, we use the feature that
111 * hardware will not write to a size 0 descriptor and mark the previous
112 * packet as end-of-list (EL). After updating the link, we remove EL
113 * and only then restore the size such that hardware may use the
114 * previous-to-end RFD.
116 * Under typical operation, the receive unit (RU) is start once,
117 * and the controller happily fills RFDs as frames arrive. If
118 * replacement RFDs cannot be allocated, or the RU goes non-active,
119 * the RU must be restarted. Frame arrival generates an interrupt,
120 * and Rx indication and re-allocation happen in the same context,
121 * therefore no locking is required. A software-generated interrupt
122 * is generated from the watchdog to recover from a failed allocation
123 * scenario where all Rx resources have been indicated and none re-
128 * VLAN offloading of tagging, stripping and filtering is not
129 * supported, but driver will accommodate the extra 4-byte VLAN tag
130 * for processing by upper layers. Tx/Rx Checksum offloading is not
131 * supported. Tx Scatter/Gather is not supported. Jumbo Frames is
132 * not supported (hardware limitation).
134 * MagicPacket(tm) WoL support is enabled/disabled via ethtool.
136 * Thanks to JC (jchapman@katalix.com) for helping with
137 * testing/troubleshooting the development driver.
140 * o several entry points race with dev->close
141 * o check for tx-no-resources/stop Q races with tx clean/wake Q
144 * 2005/12/02 - Michael O'Donnell <Michael.ODonnell at stratus dot com>
145 * - Stratus87247: protect MDI control register manipulations
146 * 2009/06/01 - Andreas Mohr <andi at lisas dot de>
147 * - add clean lowlevel I/O emulation for cards with MII-lacking PHYs
150 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
152 #include <linux/module.h>
153 #include <linux/moduleparam.h>
154 #include <linux/kernel.h>
155 #include <linux/types.h>
156 #include <linux/sched.h>
157 #include <linux/slab.h>
158 #include <linux/delay.h>
159 #include <linux/init.h>
160 #include <linux/pci.h>
161 #include <linux/dma-mapping.h>
162 #include <linux/dmapool.h>
163 #include <linux/netdevice.h>
164 #include <linux/etherdevice.h>
165 #include <linux/mii.h>
166 #include <linux/if_vlan.h>
167 #include <linux/skbuff.h>
168 #include <linux/ethtool.h>
169 #include <linux/string.h>
170 #include <linux/firmware.h>
171 #include <asm/unaligned.h>
174 #define DRV_NAME "e100"
175 #define DRV_EXT "-NAPI"
176 #define DRV_VERSION "3.5.24-k2"DRV_EXT
177 #define DRV_DESCRIPTION "Intel(R) PRO/100 Network Driver"
178 #define DRV_COPYRIGHT "Copyright(c) 1999-2006 Intel Corporation"
180 #define E100_WATCHDOG_PERIOD (2 * HZ)
181 #define E100_NAPI_WEIGHT 16
183 #define FIRMWARE_D101M "e100/d101m_ucode.bin"
184 #define FIRMWARE_D101S "e100/d101s_ucode.bin"
185 #define FIRMWARE_D102E "e100/d102e_ucode.bin"
187 MODULE_DESCRIPTION(DRV_DESCRIPTION);
188 MODULE_AUTHOR(DRV_COPYRIGHT);
189 MODULE_LICENSE("GPL");
190 MODULE_VERSION(DRV_VERSION);
191 MODULE_FIRMWARE(FIRMWARE_D101M);
192 MODULE_FIRMWARE(FIRMWARE_D101S);
193 MODULE_FIRMWARE(FIRMWARE_D102E);
195 static int debug = 3;
196 static int eeprom_bad_csum_allow = 0;
197 static int use_io = 0;
198 module_param(debug, int, 0);
199 module_param(eeprom_bad_csum_allow, int, 0);
200 module_param(use_io, int, 0);
201 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
202 MODULE_PARM_DESC(eeprom_bad_csum_allow, "Allow bad eeprom checksums");
203 MODULE_PARM_DESC(use_io, "Force use of i/o access mode");
205 #define INTEL_8255X_ETHERNET_DEVICE(device_id, ich) {\
206 PCI_VENDOR_ID_INTEL, device_id, PCI_ANY_ID, PCI_ANY_ID, \
207 PCI_CLASS_NETWORK_ETHERNET << 8, 0xFFFF00, ich }
208 static DEFINE_PCI_DEVICE_TABLE(e100_id_table) = {
209 INTEL_8255X_ETHERNET_DEVICE(0x1029, 0),
210 INTEL_8255X_ETHERNET_DEVICE(0x1030, 0),
211 INTEL_8255X_ETHERNET_DEVICE(0x1031, 3),
212 INTEL_8255X_ETHERNET_DEVICE(0x1032, 3),
213 INTEL_8255X_ETHERNET_DEVICE(0x1033, 3),
214 INTEL_8255X_ETHERNET_DEVICE(0x1034, 3),
215 INTEL_8255X_ETHERNET_DEVICE(0x1038, 3),
216 INTEL_8255X_ETHERNET_DEVICE(0x1039, 4),
217 INTEL_8255X_ETHERNET_DEVICE(0x103A, 4),
218 INTEL_8255X_ETHERNET_DEVICE(0x103B, 4),
219 INTEL_8255X_ETHERNET_DEVICE(0x103C, 4),
220 INTEL_8255X_ETHERNET_DEVICE(0x103D, 4),
221 INTEL_8255X_ETHERNET_DEVICE(0x103E, 4),
222 INTEL_8255X_ETHERNET_DEVICE(0x1050, 5),
223 INTEL_8255X_ETHERNET_DEVICE(0x1051, 5),
224 INTEL_8255X_ETHERNET_DEVICE(0x1052, 5),
225 INTEL_8255X_ETHERNET_DEVICE(0x1053, 5),
226 INTEL_8255X_ETHERNET_DEVICE(0x1054, 5),
227 INTEL_8255X_ETHERNET_DEVICE(0x1055, 5),
228 INTEL_8255X_ETHERNET_DEVICE(0x1056, 5),
229 INTEL_8255X_ETHERNET_DEVICE(0x1057, 5),
230 INTEL_8255X_ETHERNET_DEVICE(0x1059, 0),
231 INTEL_8255X_ETHERNET_DEVICE(0x1064, 6),
232 INTEL_8255X_ETHERNET_DEVICE(0x1065, 6),
233 INTEL_8255X_ETHERNET_DEVICE(0x1066, 6),
234 INTEL_8255X_ETHERNET_DEVICE(0x1067, 6),
235 INTEL_8255X_ETHERNET_DEVICE(0x1068, 6),
236 INTEL_8255X_ETHERNET_DEVICE(0x1069, 6),
237 INTEL_8255X_ETHERNET_DEVICE(0x106A, 6),
238 INTEL_8255X_ETHERNET_DEVICE(0x106B, 6),
239 INTEL_8255X_ETHERNET_DEVICE(0x1091, 7),
240 INTEL_8255X_ETHERNET_DEVICE(0x1092, 7),
241 INTEL_8255X_ETHERNET_DEVICE(0x1093, 7),
242 INTEL_8255X_ETHERNET_DEVICE(0x1094, 7),
243 INTEL_8255X_ETHERNET_DEVICE(0x1095, 7),
244 INTEL_8255X_ETHERNET_DEVICE(0x10fe, 7),
245 INTEL_8255X_ETHERNET_DEVICE(0x1209, 0),
246 INTEL_8255X_ETHERNET_DEVICE(0x1229, 0),
247 INTEL_8255X_ETHERNET_DEVICE(0x2449, 2),
248 INTEL_8255X_ETHERNET_DEVICE(0x2459, 2),
249 INTEL_8255X_ETHERNET_DEVICE(0x245D, 2),
250 INTEL_8255X_ETHERNET_DEVICE(0x27DC, 7),
253 MODULE_DEVICE_TABLE(pci, e100_id_table);
256 mac_82557_D100_A = 0,
257 mac_82557_D100_B = 1,
258 mac_82557_D100_C = 2,
259 mac_82558_D101_A4 = 4,
260 mac_82558_D101_B0 = 5,
264 mac_82550_D102_C = 13,
272 phy_100a = 0x000003E0,
273 phy_100c = 0x035002A8,
274 phy_82555_tx = 0x015002A8,
275 phy_nsc_tx = 0x5C002000,
276 phy_82562_et = 0x033002A8,
277 phy_82562_em = 0x032002A8,
278 phy_82562_ek = 0x031002A8,
279 phy_82562_eh = 0x017002A8,
280 phy_82552_v = 0xd061004d,
281 phy_unknown = 0xFFFFFFFF,
284 /* CSR (Control/Status Registers) */
310 RU_UNINITIALIZED = -1,
314 stat_ack_not_ours = 0x00,
315 stat_ack_sw_gen = 0x04,
317 stat_ack_cu_idle = 0x20,
318 stat_ack_frame_rx = 0x40,
319 stat_ack_cu_cmd_done = 0x80,
320 stat_ack_not_present = 0xFF,
321 stat_ack_rx = (stat_ack_sw_gen | stat_ack_rnr | stat_ack_frame_rx),
322 stat_ack_tx = (stat_ack_cu_idle | stat_ack_cu_cmd_done),
326 irq_mask_none = 0x00,
334 ruc_load_base = 0x06,
337 cuc_dump_addr = 0x40,
338 cuc_dump_stats = 0x50,
339 cuc_load_base = 0x60,
340 cuc_dump_reset = 0x70,
344 cuc_dump_complete = 0x0000A005,
345 cuc_dump_reset_complete = 0x0000A007,
349 software_reset = 0x0000,
351 selective_reset = 0x0002,
354 enum eeprom_ctrl_lo {
362 mdi_write = 0x04000000,
363 mdi_read = 0x08000000,
364 mdi_ready = 0x10000000,
374 enum eeprom_offsets {
375 eeprom_cnfg_mdix = 0x03,
376 eeprom_phy_iface = 0x06,
378 eeprom_config_asf = 0x0D,
379 eeprom_smbus_addr = 0x90,
382 enum eeprom_cnfg_mdix {
383 eeprom_mdix_enabled = 0x0080,
386 enum eeprom_phy_iface {
399 eeprom_id_wol = 0x0020,
402 enum eeprom_config_asf {
408 cb_complete = 0x8000,
437 struct rx *next, *prev;
442 #if defined(__BIG_ENDIAN_BITFIELD)
448 /*0*/ u8 X(byte_count:6, pad0:2);
449 /*1*/ u8 X(X(rx_fifo_limit:4, tx_fifo_limit:3), pad1:1);
450 /*2*/ u8 adaptive_ifs;
451 /*3*/ u8 X(X(X(X(mwi_enable:1, type_enable:1), read_align_enable:1),
452 term_write_cache_line:1), pad3:4);
453 /*4*/ u8 X(rx_dma_max_count:7, pad4:1);
454 /*5*/ u8 X(tx_dma_max_count:7, dma_max_count_enable:1);
455 /*6*/ u8 X(X(X(X(X(X(X(late_scb_update:1, direct_rx_dma:1),
456 tno_intr:1), cna_intr:1), standard_tcb:1), standard_stat_counter:1),
457 rx_discard_overruns:1), rx_save_bad_frames:1);
458 /*7*/ u8 X(X(X(X(X(rx_discard_short_frames:1, tx_underrun_retry:2),
459 pad7:2), rx_extended_rfd:1), tx_two_frames_in_fifo:1),
461 /*8*/ u8 X(X(mii_mode:1, pad8:6), csma_disabled:1);
462 /*9*/ u8 X(X(X(X(X(rx_tcpudp_checksum:1, pad9:3), vlan_arp_tco:1),
463 link_status_wake:1), arp_wake:1), mcmatch_wake:1);
464 /*10*/ u8 X(X(X(pad10:3, no_source_addr_insertion:1), preamble_length:2),
466 /*11*/ u8 X(linear_priority:3, pad11:5);
467 /*12*/ u8 X(X(linear_priority_mode:1, pad12:3), ifs:4);
468 /*13*/ u8 ip_addr_lo;
469 /*14*/ u8 ip_addr_hi;
470 /*15*/ u8 X(X(X(X(X(X(X(promiscuous_mode:1, broadcast_disabled:1),
471 wait_after_win:1), pad15_1:1), ignore_ul_bit:1), crc_16_bit:1),
472 pad15_2:1), crs_or_cdt:1);
473 /*16*/ u8 fc_delay_lo;
474 /*17*/ u8 fc_delay_hi;
475 /*18*/ u8 X(X(X(X(X(rx_stripping:1, tx_padding:1), rx_crc_transfer:1),
476 rx_long_ok:1), fc_priority_threshold:3), pad18:1);
477 /*19*/ u8 X(X(X(X(X(X(X(addr_wake:1, magic_packet_disable:1),
478 fc_disable:1), fc_restop:1), fc_restart:1), fc_reject:1),
479 full_duplex_force:1), full_duplex_pin:1);
480 /*20*/ u8 X(X(X(pad20_1:5, fc_priority_location:1), multi_ia:1), pad20_2:1);
481 /*21*/ u8 X(X(pad21_1:3, multicast_all:1), pad21_2:4);
482 /*22*/ u8 X(X(rx_d102_mode:1, rx_vlan_drop:1), pad22:6);
486 #define E100_MAX_MULTICAST_ADDRS 64
489 u8 addr[E100_MAX_MULTICAST_ADDRS * ETH_ALEN + 2/*pad*/];
492 /* Important: keep total struct u32-aligned */
493 #define UCODE_SIZE 134
500 __le32 ucode[UCODE_SIZE];
501 struct config config;
514 __le32 dump_buffer_addr;
516 struct cb *next, *prev;
522 lb_none = 0, lb_mac = 1, lb_phy = 3,
526 __le32 tx_good_frames, tx_max_collisions, tx_late_collisions,
527 tx_underruns, tx_lost_crs, tx_deferred, tx_single_collisions,
528 tx_multiple_collisions, tx_total_collisions;
529 __le32 rx_good_frames, rx_crc_errors, rx_alignment_errors,
530 rx_resource_errors, rx_overrun_errors, rx_cdt_errors,
531 rx_short_frame_errors;
532 __le32 fc_xmt_pause, fc_rcv_pause, fc_rcv_unsupported;
533 __le16 xmt_tco_frames, rcv_tco_frames;
553 struct param_range rfds;
554 struct param_range cbs;
558 /* Begin: frequently used values: keep adjacent for cache effect */
559 u32 msg_enable ____cacheline_aligned;
560 struct net_device *netdev;
561 struct pci_dev *pdev;
562 u16 (*mdio_ctrl)(struct nic *nic, u32 addr, u32 dir, u32 reg, u16 data);
564 struct rx *rxs ____cacheline_aligned;
565 struct rx *rx_to_use;
566 struct rx *rx_to_clean;
567 struct rfd blank_rfd;
568 enum ru_state ru_running;
570 spinlock_t cb_lock ____cacheline_aligned;
572 struct csr __iomem *csr;
573 enum scb_cmd_lo cuc_cmd;
574 unsigned int cbs_avail;
575 struct napi_struct napi;
577 struct cb *cb_to_use;
578 struct cb *cb_to_send;
579 struct cb *cb_to_clean;
581 /* End: frequently used values: keep adjacent for cache effect */
585 promiscuous = (1 << 1),
586 multicast_all = (1 << 2),
587 wol_magic = (1 << 3),
588 ich_10h_workaround = (1 << 4),
589 } flags ____cacheline_aligned;
593 struct params params;
594 struct timer_list watchdog;
595 struct timer_list blink_timer;
596 struct mii_if_info mii;
597 struct work_struct tx_timeout_task;
598 enum loopback loopback;
603 struct pci_pool *cbs_pool;
604 dma_addr_t cbs_dma_addr;
610 u32 tx_single_collisions;
611 u32 tx_multiple_collisions;
616 u32 rx_fc_unsupported;
618 u32 rx_over_length_errors;
623 spinlock_t mdio_lock;
624 const struct firmware *fw;
627 static inline void e100_write_flush(struct nic *nic)
629 /* Flush previous PCI writes through intermediate bridges
630 * by doing a benign read */
631 (void)ioread8(&nic->csr->scb.status);
634 static void e100_enable_irq(struct nic *nic)
638 spin_lock_irqsave(&nic->cmd_lock, flags);
639 iowrite8(irq_mask_none, &nic->csr->scb.cmd_hi);
640 e100_write_flush(nic);
641 spin_unlock_irqrestore(&nic->cmd_lock, flags);
644 static void e100_disable_irq(struct nic *nic)
648 spin_lock_irqsave(&nic->cmd_lock, flags);
649 iowrite8(irq_mask_all, &nic->csr->scb.cmd_hi);
650 e100_write_flush(nic);
651 spin_unlock_irqrestore(&nic->cmd_lock, flags);
654 static void e100_hw_reset(struct nic *nic)
656 /* Put CU and RU into idle with a selective reset to get
657 * device off of PCI bus */
658 iowrite32(selective_reset, &nic->csr->port);
659 e100_write_flush(nic); udelay(20);
661 /* Now fully reset device */
662 iowrite32(software_reset, &nic->csr->port);
663 e100_write_flush(nic); udelay(20);
665 /* Mask off our interrupt line - it's unmasked after reset */
666 e100_disable_irq(nic);
669 static int e100_self_test(struct nic *nic)
671 u32 dma_addr = nic->dma_addr + offsetof(struct mem, selftest);
673 /* Passing the self-test is a pretty good indication
674 * that the device can DMA to/from host memory */
676 nic->mem->selftest.signature = 0;
677 nic->mem->selftest.result = 0xFFFFFFFF;
679 iowrite32(selftest | dma_addr, &nic->csr->port);
680 e100_write_flush(nic);
681 /* Wait 10 msec for self-test to complete */
684 /* Interrupts are enabled after self-test */
685 e100_disable_irq(nic);
687 /* Check results of self-test */
688 if (nic->mem->selftest.result != 0) {
689 netif_err(nic, hw, nic->netdev,
690 "Self-test failed: result=0x%08X\n",
691 nic->mem->selftest.result);
694 if (nic->mem->selftest.signature == 0) {
695 netif_err(nic, hw, nic->netdev, "Self-test failed: timed out\n");
702 static void e100_eeprom_write(struct nic *nic, u16 addr_len, u16 addr, __le16 data)
704 u32 cmd_addr_data[3];
708 /* Three cmds: write/erase enable, write data, write/erase disable */
709 cmd_addr_data[0] = op_ewen << (addr_len - 2);
710 cmd_addr_data[1] = (((op_write << addr_len) | addr) << 16) |
712 cmd_addr_data[2] = op_ewds << (addr_len - 2);
714 /* Bit-bang cmds to write word to eeprom */
715 for (j = 0; j < 3; j++) {
718 iowrite8(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
719 e100_write_flush(nic); udelay(4);
721 for (i = 31; i >= 0; i--) {
722 ctrl = (cmd_addr_data[j] & (1 << i)) ?
724 iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
725 e100_write_flush(nic); udelay(4);
727 iowrite8(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
728 e100_write_flush(nic); udelay(4);
730 /* Wait 10 msec for cmd to complete */
734 iowrite8(0, &nic->csr->eeprom_ctrl_lo);
735 e100_write_flush(nic); udelay(4);
739 /* General technique stolen from the eepro100 driver - very clever */
740 static __le16 e100_eeprom_read(struct nic *nic, u16 *addr_len, u16 addr)
747 cmd_addr_data = ((op_read << *addr_len) | addr) << 16;
750 iowrite8(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
751 e100_write_flush(nic); udelay(4);
753 /* Bit-bang to read word from eeprom */
754 for (i = 31; i >= 0; i--) {
755 ctrl = (cmd_addr_data & (1 << i)) ? eecs | eedi : eecs;
756 iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
757 e100_write_flush(nic); udelay(4);
759 iowrite8(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
760 e100_write_flush(nic); udelay(4);
762 /* Eeprom drives a dummy zero to EEDO after receiving
763 * complete address. Use this to adjust addr_len. */
764 ctrl = ioread8(&nic->csr->eeprom_ctrl_lo);
765 if (!(ctrl & eedo) && i > 16) {
766 *addr_len -= (i - 16);
770 data = (data << 1) | (ctrl & eedo ? 1 : 0);
774 iowrite8(0, &nic->csr->eeprom_ctrl_lo);
775 e100_write_flush(nic); udelay(4);
777 return cpu_to_le16(data);
780 /* Load entire EEPROM image into driver cache and validate checksum */
781 static int e100_eeprom_load(struct nic *nic)
783 u16 addr, addr_len = 8, checksum = 0;
785 /* Try reading with an 8-bit addr len to discover actual addr len */
786 e100_eeprom_read(nic, &addr_len, 0);
787 nic->eeprom_wc = 1 << addr_len;
789 for (addr = 0; addr < nic->eeprom_wc; addr++) {
790 nic->eeprom[addr] = e100_eeprom_read(nic, &addr_len, addr);
791 if (addr < nic->eeprom_wc - 1)
792 checksum += le16_to_cpu(nic->eeprom[addr]);
795 /* The checksum, stored in the last word, is calculated such that
796 * the sum of words should be 0xBABA */
797 if (cpu_to_le16(0xBABA - checksum) != nic->eeprom[nic->eeprom_wc - 1]) {
798 netif_err(nic, probe, nic->netdev, "EEPROM corrupted\n");
799 if (!eeprom_bad_csum_allow)
806 /* Save (portion of) driver EEPROM cache to device and update checksum */
807 static int e100_eeprom_save(struct nic *nic, u16 start, u16 count)
809 u16 addr, addr_len = 8, checksum = 0;
811 /* Try reading with an 8-bit addr len to discover actual addr len */
812 e100_eeprom_read(nic, &addr_len, 0);
813 nic->eeprom_wc = 1 << addr_len;
815 if (start + count >= nic->eeprom_wc)
818 for (addr = start; addr < start + count; addr++)
819 e100_eeprom_write(nic, addr_len, addr, nic->eeprom[addr]);
821 /* The checksum, stored in the last word, is calculated such that
822 * the sum of words should be 0xBABA */
823 for (addr = 0; addr < nic->eeprom_wc - 1; addr++)
824 checksum += le16_to_cpu(nic->eeprom[addr]);
825 nic->eeprom[nic->eeprom_wc - 1] = cpu_to_le16(0xBABA - checksum);
826 e100_eeprom_write(nic, addr_len, nic->eeprom_wc - 1,
827 nic->eeprom[nic->eeprom_wc - 1]);
832 #define E100_WAIT_SCB_TIMEOUT 20000 /* we might have to wait 100ms!!! */
833 #define E100_WAIT_SCB_FAST 20 /* delay like the old code */
834 static int e100_exec_cmd(struct nic *nic, u8 cmd, dma_addr_t dma_addr)
840 spin_lock_irqsave(&nic->cmd_lock, flags);
842 /* Previous command is accepted when SCB clears */
843 for (i = 0; i < E100_WAIT_SCB_TIMEOUT; i++) {
844 if (likely(!ioread8(&nic->csr->scb.cmd_lo)))
847 if (unlikely(i > E100_WAIT_SCB_FAST))
850 if (unlikely(i == E100_WAIT_SCB_TIMEOUT)) {
855 if (unlikely(cmd != cuc_resume))
856 iowrite32(dma_addr, &nic->csr->scb.gen_ptr);
857 iowrite8(cmd, &nic->csr->scb.cmd_lo);
860 spin_unlock_irqrestore(&nic->cmd_lock, flags);
865 static int e100_exec_cb(struct nic *nic, struct sk_buff *skb,
866 void (*cb_prepare)(struct nic *, struct cb *, struct sk_buff *))
872 spin_lock_irqsave(&nic->cb_lock, flags);
874 if (unlikely(!nic->cbs_avail)) {
880 nic->cb_to_use = cb->next;
884 if (unlikely(!nic->cbs_avail))
887 cb_prepare(nic, cb, skb);
889 /* Order is important otherwise we'll be in a race with h/w:
890 * set S-bit in current first, then clear S-bit in previous. */
891 cb->command |= cpu_to_le16(cb_s);
893 cb->prev->command &= cpu_to_le16(~cb_s);
895 while (nic->cb_to_send != nic->cb_to_use) {
896 if (unlikely(e100_exec_cmd(nic, nic->cuc_cmd,
897 nic->cb_to_send->dma_addr))) {
898 /* Ok, here's where things get sticky. It's
899 * possible that we can't schedule the command
900 * because the controller is too busy, so
901 * let's just queue the command and try again
902 * when another command is scheduled. */
903 if (err == -ENOSPC) {
905 schedule_work(&nic->tx_timeout_task);
909 nic->cuc_cmd = cuc_resume;
910 nic->cb_to_send = nic->cb_to_send->next;
915 spin_unlock_irqrestore(&nic->cb_lock, flags);
920 static int mdio_read(struct net_device *netdev, int addr, int reg)
922 struct nic *nic = netdev_priv(netdev);
923 return nic->mdio_ctrl(nic, addr, mdi_read, reg, 0);
926 static void mdio_write(struct net_device *netdev, int addr, int reg, int data)
928 struct nic *nic = netdev_priv(netdev);
930 nic->mdio_ctrl(nic, addr, mdi_write, reg, data);
933 /* the standard mdio_ctrl() function for usual MII-compliant hardware */
934 static u16 mdio_ctrl_hw(struct nic *nic, u32 addr, u32 dir, u32 reg, u16 data)
942 * Stratus87247: we shouldn't be writing the MDI control
943 * register until the Ready bit shows True. Also, since
944 * manipulation of the MDI control registers is a multi-step
945 * procedure it should be done under lock.
947 spin_lock_irqsave(&nic->mdio_lock, flags);
948 for (i = 100; i; --i) {
949 if (ioread32(&nic->csr->mdi_ctrl) & mdi_ready)
954 netdev_err(nic->netdev, "e100.mdio_ctrl won't go Ready\n");
955 spin_unlock_irqrestore(&nic->mdio_lock, flags);
956 return 0; /* No way to indicate timeout error */
958 iowrite32((reg << 16) | (addr << 21) | dir | data, &nic->csr->mdi_ctrl);
960 for (i = 0; i < 100; i++) {
962 if ((data_out = ioread32(&nic->csr->mdi_ctrl)) & mdi_ready)
965 spin_unlock_irqrestore(&nic->mdio_lock, flags);
966 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
967 "%s:addr=%d, reg=%d, data_in=0x%04X, data_out=0x%04X\n",
968 dir == mdi_read ? "READ" : "WRITE",
969 addr, reg, data, data_out);
970 return (u16)data_out;
973 /* slightly tweaked mdio_ctrl() function for phy_82552_v specifics */
974 static u16 mdio_ctrl_phy_82552_v(struct nic *nic,
980 if ((reg == MII_BMCR) && (dir == mdi_write)) {
981 if (data & (BMCR_ANRESTART | BMCR_ANENABLE)) {
982 u16 advert = mdio_read(nic->netdev, nic->mii.phy_id,
986 * Workaround Si issue where sometimes the part will not
987 * autoneg to 100Mbps even when advertised.
989 if (advert & ADVERTISE_100FULL)
990 data |= BMCR_SPEED100 | BMCR_FULLDPLX;
991 else if (advert & ADVERTISE_100HALF)
992 data |= BMCR_SPEED100;
995 return mdio_ctrl_hw(nic, addr, dir, reg, data);
998 /* Fully software-emulated mdio_ctrl() function for cards without
999 * MII-compliant PHYs.
1000 * For now, this is mainly geared towards 80c24 support; in case of further
1001 * requirements for other types (i82503, ...?) either extend this mechanism
1002 * or split it, whichever is cleaner.
1004 static u16 mdio_ctrl_phy_mii_emulated(struct nic *nic,
1010 /* might need to allocate a netdev_priv'ed register array eventually
1011 * to be able to record state changes, but for now
1012 * some fully hardcoded register handling ought to be ok I guess. */
1014 if (dir == mdi_read) {
1017 /* Auto-negotiation, right? */
1018 return BMCR_ANENABLE |
1021 return BMSR_LSTATUS /* for mii_link_ok() */ |
1025 /* 80c24 is a "combo card" PHY, right? */
1026 return ADVERTISE_10HALF |
1029 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1030 "%s:addr=%d, reg=%d, data=0x%04X: unimplemented emulation!\n",
1031 dir == mdi_read ? "READ" : "WRITE",
1038 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1039 "%s:addr=%d, reg=%d, data=0x%04X: unimplemented emulation!\n",
1040 dir == mdi_read ? "READ" : "WRITE",
1046 static inline int e100_phy_supports_mii(struct nic *nic)
1048 /* for now, just check it by comparing whether we
1049 are using MII software emulation.
1051 return (nic->mdio_ctrl != mdio_ctrl_phy_mii_emulated);
1054 static void e100_get_defaults(struct nic *nic)
1056 struct param_range rfds = { .min = 16, .max = 256, .count = 256 };
1057 struct param_range cbs = { .min = 64, .max = 256, .count = 128 };
1059 /* MAC type is encoded as rev ID; exception: ICH is treated as 82559 */
1060 nic->mac = (nic->flags & ich) ? mac_82559_D101M : nic->pdev->revision;
1061 if (nic->mac == mac_unknown)
1062 nic->mac = mac_82557_D100_A;
1064 nic->params.rfds = rfds;
1065 nic->params.cbs = cbs;
1067 /* Quadwords to DMA into FIFO before starting frame transmit */
1068 nic->tx_threshold = 0xE0;
1070 /* no interrupt for every tx completion, delay = 256us if not 557 */
1071 nic->tx_command = cpu_to_le16(cb_tx | cb_tx_sf |
1072 ((nic->mac >= mac_82558_D101_A4) ? cb_cid : cb_i));
1074 /* Template for a freshly allocated RFD */
1075 nic->blank_rfd.command = 0;
1076 nic->blank_rfd.rbd = cpu_to_le32(0xFFFFFFFF);
1077 nic->blank_rfd.size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
1080 nic->mii.phy_id_mask = 0x1F;
1081 nic->mii.reg_num_mask = 0x1F;
1082 nic->mii.dev = nic->netdev;
1083 nic->mii.mdio_read = mdio_read;
1084 nic->mii.mdio_write = mdio_write;
1087 static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
1089 struct config *config = &cb->u.config;
1090 u8 *c = (u8 *)config;
1092 cb->command = cpu_to_le16(cb_config);
1094 memset(config, 0, sizeof(struct config));
1096 config->byte_count = 0x16; /* bytes in this struct */
1097 config->rx_fifo_limit = 0x8; /* bytes in FIFO before DMA */
1098 config->direct_rx_dma = 0x1; /* reserved */
1099 config->standard_tcb = 0x1; /* 1=standard, 0=extended */
1100 config->standard_stat_counter = 0x1; /* 1=standard, 0=extended */
1101 config->rx_discard_short_frames = 0x1; /* 1=discard, 0=pass */
1102 config->tx_underrun_retry = 0x3; /* # of underrun retries */
1103 if (e100_phy_supports_mii(nic))
1104 config->mii_mode = 1; /* 1=MII mode, 0=i82503 mode */
1105 config->pad10 = 0x6;
1106 config->no_source_addr_insertion = 0x1; /* 1=no, 0=yes */
1107 config->preamble_length = 0x2; /* 0=1, 1=3, 2=7, 3=15 bytes */
1108 config->ifs = 0x6; /* x16 = inter frame spacing */
1109 config->ip_addr_hi = 0xF2; /* ARP IP filter - not used */
1110 config->pad15_1 = 0x1;
1111 config->pad15_2 = 0x1;
1112 config->crs_or_cdt = 0x0; /* 0=CRS only, 1=CRS or CDT */
1113 config->fc_delay_hi = 0x40; /* time delay for fc frame */
1114 config->tx_padding = 0x1; /* 1=pad short frames */
1115 config->fc_priority_threshold = 0x7; /* 7=priority fc disabled */
1116 config->pad18 = 0x1;
1117 config->full_duplex_pin = 0x1; /* 1=examine FDX# pin */
1118 config->pad20_1 = 0x1F;
1119 config->fc_priority_location = 0x1; /* 1=byte#31, 0=byte#19 */
1120 config->pad21_1 = 0x5;
1122 config->adaptive_ifs = nic->adaptive_ifs;
1123 config->loopback = nic->loopback;
1125 if (nic->mii.force_media && nic->mii.full_duplex)
1126 config->full_duplex_force = 0x1; /* 1=force, 0=auto */
1128 if (nic->flags & promiscuous || nic->loopback) {
1129 config->rx_save_bad_frames = 0x1; /* 1=save, 0=discard */
1130 config->rx_discard_short_frames = 0x0; /* 1=discard, 0=save */
1131 config->promiscuous_mode = 0x1; /* 1=on, 0=off */
1134 if (nic->flags & multicast_all)
1135 config->multicast_all = 0x1; /* 1=accept, 0=no */
1137 /* disable WoL when up */
1138 if (netif_running(nic->netdev) || !(nic->flags & wol_magic))
1139 config->magic_packet_disable = 0x1; /* 1=off, 0=on */
1141 if (nic->mac >= mac_82558_D101_A4) {
1142 config->fc_disable = 0x1; /* 1=Tx fc off, 0=Tx fc on */
1143 config->mwi_enable = 0x1; /* 1=enable, 0=disable */
1144 config->standard_tcb = 0x0; /* 1=standard, 0=extended */
1145 config->rx_long_ok = 0x1; /* 1=VLANs ok, 0=standard */
1146 if (nic->mac >= mac_82559_D101M) {
1147 config->tno_intr = 0x1; /* TCO stats enable */
1148 /* Enable TCO in extended config */
1149 if (nic->mac >= mac_82551_10) {
1150 config->byte_count = 0x20; /* extended bytes */
1151 config->rx_d102_mode = 0x1; /* GMRC for TCO */
1154 config->standard_stat_counter = 0x0;
1158 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1159 "[00-07]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1160 c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]);
1161 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1162 "[08-15]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1163 c[8], c[9], c[10], c[11], c[12], c[13], c[14], c[15]);
1164 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1165 "[16-23]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1166 c[16], c[17], c[18], c[19], c[20], c[21], c[22], c[23]);
1169 /*************************************************************************
1170 * CPUSaver parameters
1172 * All CPUSaver parameters are 16-bit literals that are part of a
1173 * "move immediate value" instruction. By changing the value of
1174 * the literal in the instruction before the code is loaded, the
1175 * driver can change the algorithm.
1177 * INTDELAY - This loads the dead-man timer with its initial value.
1178 * When this timer expires the interrupt is asserted, and the
1179 * timer is reset each time a new packet is received. (see
1180 * BUNDLEMAX below to set the limit on number of chained packets)
1181 * The current default is 0x600 or 1536. Experiments show that
1182 * the value should probably stay within the 0x200 - 0x1000.
1185 * This sets the maximum number of frames that will be bundled. In
1186 * some situations, such as the TCP windowing algorithm, it may be
1187 * better to limit the growth of the bundle size than let it go as
1188 * high as it can, because that could cause too much added latency.
1189 * The default is six, because this is the number of packets in the
1190 * default TCP window size. A value of 1 would make CPUSaver indicate
1191 * an interrupt for every frame received. If you do not want to put
1192 * a limit on the bundle size, set this value to xFFFF.
1195 * This contains a bit-mask describing the minimum size frame that
1196 * will be bundled. The default masks the lower 7 bits, which means
1197 * that any frame less than 128 bytes in length will not be bundled,
1198 * but will instead immediately generate an interrupt. This does
1199 * not affect the current bundle in any way. Any frame that is 128
1200 * bytes or large will be bundled normally. This feature is meant
1201 * to provide immediate indication of ACK frames in a TCP environment.
1202 * Customers were seeing poor performance when a machine with CPUSaver
1203 * enabled was sending but not receiving. The delay introduced when
1204 * the ACKs were received was enough to reduce total throughput, because
1205 * the sender would sit idle until the ACK was finally seen.
1207 * The current default is 0xFF80, which masks out the lower 7 bits.
1208 * This means that any frame which is x7F (127) bytes or smaller
1209 * will cause an immediate interrupt. Because this value must be a
1210 * bit mask, there are only a few valid values that can be used. To
1211 * turn this feature off, the driver can write the value xFFFF to the
1212 * lower word of this instruction (in the same way that the other
1213 * parameters are used). Likewise, a value of 0xF800 (2047) would
1214 * cause an interrupt to be generated for every frame, because all
1215 * standard Ethernet frames are <= 2047 bytes in length.
1216 *************************************************************************/
1218 /* if you wish to disable the ucode functionality, while maintaining the
1219 * workarounds it provides, set the following defines to:
1224 #define BUNDLESMALL 1
1225 #define BUNDLEMAX (u16)6
1226 #define INTDELAY (u16)1536 /* 0x600 */
1228 /* Initialize firmware */
1229 static const struct firmware *e100_request_firmware(struct nic *nic)
1231 const char *fw_name;
1232 const struct firmware *fw = nic->fw;
1233 u8 timer, bundle, min_size;
1236 /* do not load u-code for ICH devices */
1237 if (nic->flags & ich)
1240 /* Search for ucode match against h/w revision */
1241 if (nic->mac == mac_82559_D101M)
1242 fw_name = FIRMWARE_D101M;
1243 else if (nic->mac == mac_82559_D101S)
1244 fw_name = FIRMWARE_D101S;
1245 else if (nic->mac == mac_82551_F || nic->mac == mac_82551_10)
1246 fw_name = FIRMWARE_D102E;
1247 else /* No ucode on other devices */
1250 /* If the firmware has not previously been loaded, request a pointer
1251 * to it. If it was previously loaded, we are reinitializing the
1252 * adapter, possibly in a resume from hibernate, in which case
1253 * request_firmware() cannot be used.
1256 err = request_firmware(&fw, fw_name, &nic->pdev->dev);
1259 netif_err(nic, probe, nic->netdev,
1260 "Failed to load firmware \"%s\": %d\n",
1262 return ERR_PTR(err);
1265 /* Firmware should be precisely UCODE_SIZE (words) plus three bytes
1266 indicating the offsets for BUNDLESMALL, BUNDLEMAX, INTDELAY */
1267 if (fw->size != UCODE_SIZE * 4 + 3) {
1268 netif_err(nic, probe, nic->netdev,
1269 "Firmware \"%s\" has wrong size %zu\n",
1271 release_firmware(fw);
1272 return ERR_PTR(-EINVAL);
1275 /* Read timer, bundle and min_size from end of firmware blob */
1276 timer = fw->data[UCODE_SIZE * 4];
1277 bundle = fw->data[UCODE_SIZE * 4 + 1];
1278 min_size = fw->data[UCODE_SIZE * 4 + 2];
1280 if (timer >= UCODE_SIZE || bundle >= UCODE_SIZE ||
1281 min_size >= UCODE_SIZE) {
1282 netif_err(nic, probe, nic->netdev,
1283 "\"%s\" has bogus offset values (0x%x,0x%x,0x%x)\n",
1284 fw_name, timer, bundle, min_size);
1285 release_firmware(fw);
1286 return ERR_PTR(-EINVAL);
1289 /* OK, firmware is validated and ready to use. Save a pointer
1290 * to it in the nic */
1295 static void e100_setup_ucode(struct nic *nic, struct cb *cb,
1296 struct sk_buff *skb)
1298 const struct firmware *fw = (void *)skb;
1299 u8 timer, bundle, min_size;
1301 /* It's not a real skb; we just abused the fact that e100_exec_cb
1302 will pass it through to here... */
1305 /* firmware is stored as little endian already */
1306 memcpy(cb->u.ucode, fw->data, UCODE_SIZE * 4);
1308 /* Read timer, bundle and min_size from end of firmware blob */
1309 timer = fw->data[UCODE_SIZE * 4];
1310 bundle = fw->data[UCODE_SIZE * 4 + 1];
1311 min_size = fw->data[UCODE_SIZE * 4 + 2];
1313 /* Insert user-tunable settings in cb->u.ucode */
1314 cb->u.ucode[timer] &= cpu_to_le32(0xFFFF0000);
1315 cb->u.ucode[timer] |= cpu_to_le32(INTDELAY);
1316 cb->u.ucode[bundle] &= cpu_to_le32(0xFFFF0000);
1317 cb->u.ucode[bundle] |= cpu_to_le32(BUNDLEMAX);
1318 cb->u.ucode[min_size] &= cpu_to_le32(0xFFFF0000);
1319 cb->u.ucode[min_size] |= cpu_to_le32((BUNDLESMALL) ? 0xFFFF : 0xFF80);
1321 cb->command = cpu_to_le16(cb_ucode | cb_el);
1324 static inline int e100_load_ucode_wait(struct nic *nic)
1326 const struct firmware *fw;
1327 int err = 0, counter = 50;
1328 struct cb *cb = nic->cb_to_clean;
1330 fw = e100_request_firmware(nic);
1331 /* If it's NULL, then no ucode is required */
1332 if (!fw || IS_ERR(fw))
1335 if ((err = e100_exec_cb(nic, (void *)fw, e100_setup_ucode)))
1336 netif_err(nic, probe, nic->netdev,
1337 "ucode cmd failed with error %d\n", err);
1339 /* must restart cuc */
1340 nic->cuc_cmd = cuc_start;
1342 /* wait for completion */
1343 e100_write_flush(nic);
1346 /* wait for possibly (ouch) 500ms */
1347 while (!(cb->status & cpu_to_le16(cb_complete))) {
1349 if (!--counter) break;
1352 /* ack any interrupts, something could have been set */
1353 iowrite8(~0, &nic->csr->scb.stat_ack);
1355 /* if the command failed, or is not OK, notify and return */
1356 if (!counter || !(cb->status & cpu_to_le16(cb_ok))) {
1357 netif_err(nic, probe, nic->netdev, "ucode load failed\n");
1364 static void e100_setup_iaaddr(struct nic *nic, struct cb *cb,
1365 struct sk_buff *skb)
1367 cb->command = cpu_to_le16(cb_iaaddr);
1368 memcpy(cb->u.iaaddr, nic->netdev->dev_addr, ETH_ALEN);
1371 static void e100_dump(struct nic *nic, struct cb *cb, struct sk_buff *skb)
1373 cb->command = cpu_to_le16(cb_dump);
1374 cb->u.dump_buffer_addr = cpu_to_le32(nic->dma_addr +
1375 offsetof(struct mem, dump_buf));
1378 static int e100_phy_check_without_mii(struct nic *nic)
1383 phy_type = (nic->eeprom[eeprom_phy_iface] >> 8) & 0x0f;
1386 case NoSuchPhy: /* Non-MII PHY; UNTESTED! */
1387 case I82503: /* Non-MII PHY; UNTESTED! */
1388 case S80C24: /* Non-MII PHY; tested and working */
1389 /* paragraph from the FreeBSD driver, "FXP_PHY_80C24":
1390 * The Seeq 80c24 AutoDUPLEX(tm) Ethernet Interface Adapter
1391 * doesn't have a programming interface of any sort. The
1392 * media is sensed automatically based on how the link partner
1393 * is configured. This is, in essence, manual configuration.
1395 netif_info(nic, probe, nic->netdev,
1396 "found MII-less i82503 or 80c24 or other PHY\n");
1398 nic->mdio_ctrl = mdio_ctrl_phy_mii_emulated;
1399 nic->mii.phy_id = 0; /* is this ok for an MII-less PHY? */
1401 /* these might be needed for certain MII-less cards...
1402 * nic->flags |= ich;
1403 * nic->flags |= ich_10h_workaround; */
1414 #define NCONFIG_AUTO_SWITCH 0x0080
1415 #define MII_NSC_CONG MII_RESV1
1416 #define NSC_CONG_ENABLE 0x0100
1417 #define NSC_CONG_TXREADY 0x0400
1418 #define ADVERTISE_FC_SUPPORTED 0x0400
1419 static int e100_phy_init(struct nic *nic)
1421 struct net_device *netdev = nic->netdev;
1423 u16 bmcr, stat, id_lo, id_hi, cong;
1425 /* Discover phy addr by searching addrs in order {1,0,2,..., 31} */
1426 for (addr = 0; addr < 32; addr++) {
1427 nic->mii.phy_id = (addr == 0) ? 1 : (addr == 1) ? 0 : addr;
1428 bmcr = mdio_read(netdev, nic->mii.phy_id, MII_BMCR);
1429 stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR);
1430 stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR);
1431 if (!((bmcr == 0xFFFF) || ((stat == 0) && (bmcr == 0))))
1435 /* uhoh, no PHY detected: check whether we seem to be some
1436 * weird, rare variant which is *known* to not have any MII.
1437 * But do this AFTER MII checking only, since this does
1438 * lookup of EEPROM values which may easily be unreliable. */
1439 if (e100_phy_check_without_mii(nic))
1440 return 0; /* simply return and hope for the best */
1442 /* for unknown cases log a fatal error */
1443 netif_err(nic, hw, nic->netdev,
1444 "Failed to locate any known PHY, aborting\n");
1448 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1449 "phy_addr = %d\n", nic->mii.phy_id);
1452 id_lo = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID1);
1453 id_hi = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID2);
1454 nic->phy = (u32)id_hi << 16 | (u32)id_lo;
1455 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1456 "phy ID = 0x%08X\n", nic->phy);
1458 /* Select the phy and isolate the rest */
1459 for (addr = 0; addr < 32; addr++) {
1460 if (addr != nic->mii.phy_id) {
1461 mdio_write(netdev, addr, MII_BMCR, BMCR_ISOLATE);
1462 } else if (nic->phy != phy_82552_v) {
1463 bmcr = mdio_read(netdev, addr, MII_BMCR);
1464 mdio_write(netdev, addr, MII_BMCR,
1465 bmcr & ~BMCR_ISOLATE);
1469 * Workaround for 82552:
1470 * Clear the ISOLATE bit on selected phy_id last (mirrored on all
1471 * other phy_id's) using bmcr value from addr discovery loop above.
1473 if (nic->phy == phy_82552_v)
1474 mdio_write(netdev, nic->mii.phy_id, MII_BMCR,
1475 bmcr & ~BMCR_ISOLATE);
1477 /* Handle National tx phys */
1478 #define NCS_PHY_MODEL_MASK 0xFFF0FFFF
1479 if ((nic->phy & NCS_PHY_MODEL_MASK) == phy_nsc_tx) {
1480 /* Disable congestion control */
1481 cong = mdio_read(netdev, nic->mii.phy_id, MII_NSC_CONG);
1482 cong |= NSC_CONG_TXREADY;
1483 cong &= ~NSC_CONG_ENABLE;
1484 mdio_write(netdev, nic->mii.phy_id, MII_NSC_CONG, cong);
1487 if (nic->phy == phy_82552_v) {
1488 u16 advert = mdio_read(netdev, nic->mii.phy_id, MII_ADVERTISE);
1490 /* assign special tweaked mdio_ctrl() function */
1491 nic->mdio_ctrl = mdio_ctrl_phy_82552_v;
1493 /* Workaround Si not advertising flow-control during autoneg */
1494 advert |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
1495 mdio_write(netdev, nic->mii.phy_id, MII_ADVERTISE, advert);
1497 /* Reset for the above changes to take effect */
1498 bmcr = mdio_read(netdev, nic->mii.phy_id, MII_BMCR);
1500 mdio_write(netdev, nic->mii.phy_id, MII_BMCR, bmcr);
1501 } else if ((nic->mac >= mac_82550_D102) || ((nic->flags & ich) &&
1502 (mdio_read(netdev, nic->mii.phy_id, MII_TPISTATUS) & 0x8000) &&
1503 !(nic->eeprom[eeprom_cnfg_mdix] & eeprom_mdix_enabled))) {
1504 /* enable/disable MDI/MDI-X auto-switching. */
1505 mdio_write(netdev, nic->mii.phy_id, MII_NCONFIG,
1506 nic->mii.force_media ? 0 : NCONFIG_AUTO_SWITCH);
1512 static int e100_hw_init(struct nic *nic)
1518 netif_err(nic, hw, nic->netdev, "e100_hw_init\n");
1519 if (!in_interrupt() && (err = e100_self_test(nic)))
1522 if ((err = e100_phy_init(nic)))
1524 if ((err = e100_exec_cmd(nic, cuc_load_base, 0)))
1526 if ((err = e100_exec_cmd(nic, ruc_load_base, 0)))
1528 if ((err = e100_load_ucode_wait(nic)))
1530 if ((err = e100_exec_cb(nic, NULL, e100_configure)))
1532 if ((err = e100_exec_cb(nic, NULL, e100_setup_iaaddr)))
1534 if ((err = e100_exec_cmd(nic, cuc_dump_addr,
1535 nic->dma_addr + offsetof(struct mem, stats))))
1537 if ((err = e100_exec_cmd(nic, cuc_dump_reset, 0)))
1540 e100_disable_irq(nic);
1545 static void e100_multi(struct nic *nic, struct cb *cb, struct sk_buff *skb)
1547 struct net_device *netdev = nic->netdev;
1548 struct netdev_hw_addr *ha;
1549 u16 i, count = min(netdev_mc_count(netdev), E100_MAX_MULTICAST_ADDRS);
1551 cb->command = cpu_to_le16(cb_multi);
1552 cb->u.multi.count = cpu_to_le16(count * ETH_ALEN);
1554 netdev_for_each_mc_addr(ha, netdev) {
1557 memcpy(&cb->u.multi.addr[i++ * ETH_ALEN], &ha->addr,
1562 static void e100_set_multicast_list(struct net_device *netdev)
1564 struct nic *nic = netdev_priv(netdev);
1566 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1567 "mc_count=%d, flags=0x%04X\n",
1568 netdev_mc_count(netdev), netdev->flags);
1570 if (netdev->flags & IFF_PROMISC)
1571 nic->flags |= promiscuous;
1573 nic->flags &= ~promiscuous;
1575 if (netdev->flags & IFF_ALLMULTI ||
1576 netdev_mc_count(netdev) > E100_MAX_MULTICAST_ADDRS)
1577 nic->flags |= multicast_all;
1579 nic->flags &= ~multicast_all;
1581 e100_exec_cb(nic, NULL, e100_configure);
1582 e100_exec_cb(nic, NULL, e100_multi);
1585 static void e100_update_stats(struct nic *nic)
1587 struct net_device *dev = nic->netdev;
1588 struct net_device_stats *ns = &dev->stats;
1589 struct stats *s = &nic->mem->stats;
1590 __le32 *complete = (nic->mac < mac_82558_D101_A4) ? &s->fc_xmt_pause :
1591 (nic->mac < mac_82559_D101M) ? (__le32 *)&s->xmt_tco_frames :
1594 /* Device's stats reporting may take several microseconds to
1595 * complete, so we're always waiting for results of the
1596 * previous command. */
1598 if (*complete == cpu_to_le32(cuc_dump_reset_complete)) {
1600 nic->tx_frames = le32_to_cpu(s->tx_good_frames);
1601 nic->tx_collisions = le32_to_cpu(s->tx_total_collisions);
1602 ns->tx_aborted_errors += le32_to_cpu(s->tx_max_collisions);
1603 ns->tx_window_errors += le32_to_cpu(s->tx_late_collisions);
1604 ns->tx_carrier_errors += le32_to_cpu(s->tx_lost_crs);
1605 ns->tx_fifo_errors += le32_to_cpu(s->tx_underruns);
1606 ns->collisions += nic->tx_collisions;
1607 ns->tx_errors += le32_to_cpu(s->tx_max_collisions) +
1608 le32_to_cpu(s->tx_lost_crs);
1609 ns->rx_length_errors += le32_to_cpu(s->rx_short_frame_errors) +
1610 nic->rx_over_length_errors;
1611 ns->rx_crc_errors += le32_to_cpu(s->rx_crc_errors);
1612 ns->rx_frame_errors += le32_to_cpu(s->rx_alignment_errors);
1613 ns->rx_over_errors += le32_to_cpu(s->rx_overrun_errors);
1614 ns->rx_fifo_errors += le32_to_cpu(s->rx_overrun_errors);
1615 ns->rx_missed_errors += le32_to_cpu(s->rx_resource_errors);
1616 ns->rx_errors += le32_to_cpu(s->rx_crc_errors) +
1617 le32_to_cpu(s->rx_alignment_errors) +
1618 le32_to_cpu(s->rx_short_frame_errors) +
1619 le32_to_cpu(s->rx_cdt_errors);
1620 nic->tx_deferred += le32_to_cpu(s->tx_deferred);
1621 nic->tx_single_collisions +=
1622 le32_to_cpu(s->tx_single_collisions);
1623 nic->tx_multiple_collisions +=
1624 le32_to_cpu(s->tx_multiple_collisions);
1625 if (nic->mac >= mac_82558_D101_A4) {
1626 nic->tx_fc_pause += le32_to_cpu(s->fc_xmt_pause);
1627 nic->rx_fc_pause += le32_to_cpu(s->fc_rcv_pause);
1628 nic->rx_fc_unsupported +=
1629 le32_to_cpu(s->fc_rcv_unsupported);
1630 if (nic->mac >= mac_82559_D101M) {
1631 nic->tx_tco_frames +=
1632 le16_to_cpu(s->xmt_tco_frames);
1633 nic->rx_tco_frames +=
1634 le16_to_cpu(s->rcv_tco_frames);
1640 if (e100_exec_cmd(nic, cuc_dump_reset, 0))
1641 netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev,
1642 "exec cuc_dump_reset failed\n");
1645 static void e100_adjust_adaptive_ifs(struct nic *nic, int speed, int duplex)
1647 /* Adjust inter-frame-spacing (IFS) between two transmits if
1648 * we're getting collisions on a half-duplex connection. */
1650 if (duplex == DUPLEX_HALF) {
1651 u32 prev = nic->adaptive_ifs;
1652 u32 min_frames = (speed == SPEED_100) ? 1000 : 100;
1654 if ((nic->tx_frames / 32 < nic->tx_collisions) &&
1655 (nic->tx_frames > min_frames)) {
1656 if (nic->adaptive_ifs < 60)
1657 nic->adaptive_ifs += 5;
1658 } else if (nic->tx_frames < min_frames) {
1659 if (nic->adaptive_ifs >= 5)
1660 nic->adaptive_ifs -= 5;
1662 if (nic->adaptive_ifs != prev)
1663 e100_exec_cb(nic, NULL, e100_configure);
1667 static void e100_watchdog(unsigned long data)
1669 struct nic *nic = (struct nic *)data;
1670 struct ethtool_cmd cmd;
1672 netif_printk(nic, timer, KERN_DEBUG, nic->netdev,
1673 "right now = %ld\n", jiffies);
1675 /* mii library handles link maintenance tasks */
1677 mii_ethtool_gset(&nic->mii, &cmd);
1679 if (mii_link_ok(&nic->mii) && !netif_carrier_ok(nic->netdev)) {
1680 netdev_info(nic->netdev, "NIC Link is Up %u Mbps %s Duplex\n",
1681 cmd.speed == SPEED_100 ? 100 : 10,
1682 cmd.duplex == DUPLEX_FULL ? "Full" : "Half");
1683 } else if (!mii_link_ok(&nic->mii) && netif_carrier_ok(nic->netdev)) {
1684 netdev_info(nic->netdev, "NIC Link is Down\n");
1687 mii_check_link(&nic->mii);
1689 /* Software generated interrupt to recover from (rare) Rx
1690 * allocation failure.
1691 * Unfortunately have to use a spinlock to not re-enable interrupts
1692 * accidentally, due to hardware that shares a register between the
1693 * interrupt mask bit and the SW Interrupt generation bit */
1694 spin_lock_irq(&nic->cmd_lock);
1695 iowrite8(ioread8(&nic->csr->scb.cmd_hi) | irq_sw_gen,&nic->csr->scb.cmd_hi);
1696 e100_write_flush(nic);
1697 spin_unlock_irq(&nic->cmd_lock);
1699 e100_update_stats(nic);
1700 e100_adjust_adaptive_ifs(nic, cmd.speed, cmd.duplex);
1702 if (nic->mac <= mac_82557_D100_C)
1703 /* Issue a multicast command to workaround a 557 lock up */
1704 e100_set_multicast_list(nic->netdev);
1706 if (nic->flags & ich && cmd.speed==SPEED_10 && cmd.duplex==DUPLEX_HALF)
1707 /* Need SW workaround for ICH[x] 10Mbps/half duplex Tx hang. */
1708 nic->flags |= ich_10h_workaround;
1710 nic->flags &= ~ich_10h_workaround;
1712 mod_timer(&nic->watchdog,
1713 round_jiffies(jiffies + E100_WATCHDOG_PERIOD));
1716 static void e100_xmit_prepare(struct nic *nic, struct cb *cb,
1717 struct sk_buff *skb)
1719 cb->command = nic->tx_command;
1720 /* interrupt every 16 packets regardless of delay */
1721 if ((nic->cbs_avail & ~15) == nic->cbs_avail)
1722 cb->command |= cpu_to_le16(cb_i);
1723 cb->u.tcb.tbd_array = cb->dma_addr + offsetof(struct cb, u.tcb.tbd);
1724 cb->u.tcb.tcb_byte_count = 0;
1725 cb->u.tcb.threshold = nic->tx_threshold;
1726 cb->u.tcb.tbd_count = 1;
1727 cb->u.tcb.tbd.buf_addr = cpu_to_le32(pci_map_single(nic->pdev,
1728 skb->data, skb->len, PCI_DMA_TODEVICE));
1729 /* check for mapping failure? */
1730 cb->u.tcb.tbd.size = cpu_to_le16(skb->len);
1733 static netdev_tx_t e100_xmit_frame(struct sk_buff *skb,
1734 struct net_device *netdev)
1736 struct nic *nic = netdev_priv(netdev);
1739 if (nic->flags & ich_10h_workaround) {
1740 /* SW workaround for ICH[x] 10Mbps/half duplex Tx hang.
1741 Issue a NOP command followed by a 1us delay before
1742 issuing the Tx command. */
1743 if (e100_exec_cmd(nic, cuc_nop, 0))
1744 netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev,
1745 "exec cuc_nop failed\n");
1749 err = e100_exec_cb(nic, skb, e100_xmit_prepare);
1753 /* We queued the skb, but now we're out of space. */
1754 netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev,
1755 "No space for CB\n");
1756 netif_stop_queue(netdev);
1759 /* This is a hard error - log it. */
1760 netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev,
1761 "Out of Tx resources, returning skb\n");
1762 netif_stop_queue(netdev);
1763 return NETDEV_TX_BUSY;
1766 netdev->trans_start = jiffies;
1767 return NETDEV_TX_OK;
1770 static int e100_tx_clean(struct nic *nic)
1772 struct net_device *dev = nic->netdev;
1776 spin_lock(&nic->cb_lock);
1778 /* Clean CBs marked complete */
1779 for (cb = nic->cb_to_clean;
1780 cb->status & cpu_to_le16(cb_complete);
1781 cb = nic->cb_to_clean = cb->next) {
1782 netif_printk(nic, tx_done, KERN_DEBUG, nic->netdev,
1783 "cb[%d]->status = 0x%04X\n",
1784 (int)(((void*)cb - (void*)nic->cbs)/sizeof(struct cb)),
1787 if (likely(cb->skb != NULL)) {
1788 dev->stats.tx_packets++;
1789 dev->stats.tx_bytes += cb->skb->len;
1791 pci_unmap_single(nic->pdev,
1792 le32_to_cpu(cb->u.tcb.tbd.buf_addr),
1793 le16_to_cpu(cb->u.tcb.tbd.size),
1795 dev_kfree_skb_any(cb->skb);
1803 spin_unlock(&nic->cb_lock);
1805 /* Recover from running out of Tx resources in xmit_frame */
1806 if (unlikely(tx_cleaned && netif_queue_stopped(nic->netdev)))
1807 netif_wake_queue(nic->netdev);
1812 static void e100_clean_cbs(struct nic *nic)
1815 while (nic->cbs_avail != nic->params.cbs.count) {
1816 struct cb *cb = nic->cb_to_clean;
1818 pci_unmap_single(nic->pdev,
1819 le32_to_cpu(cb->u.tcb.tbd.buf_addr),
1820 le16_to_cpu(cb->u.tcb.tbd.size),
1822 dev_kfree_skb(cb->skb);
1824 nic->cb_to_clean = nic->cb_to_clean->next;
1827 pci_pool_free(nic->cbs_pool, nic->cbs, nic->cbs_dma_addr);
1831 nic->cuc_cmd = cuc_start;
1832 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean =
1836 static int e100_alloc_cbs(struct nic *nic)
1839 unsigned int i, count = nic->params.cbs.count;
1841 nic->cuc_cmd = cuc_start;
1842 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean = NULL;
1845 nic->cbs = pci_pool_alloc(nic->cbs_pool, GFP_KERNEL,
1846 &nic->cbs_dma_addr);
1849 memset(nic->cbs, 0, count * sizeof(struct cb));
1851 for (cb = nic->cbs, i = 0; i < count; cb++, i++) {
1852 cb->next = (i + 1 < count) ? cb + 1 : nic->cbs;
1853 cb->prev = (i == 0) ? nic->cbs + count - 1 : cb - 1;
1855 cb->dma_addr = nic->cbs_dma_addr + i * sizeof(struct cb);
1856 cb->link = cpu_to_le32(nic->cbs_dma_addr +
1857 ((i+1) % count) * sizeof(struct cb));
1860 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean = nic->cbs;
1861 nic->cbs_avail = count;
1866 static inline void e100_start_receiver(struct nic *nic, struct rx *rx)
1868 if (!nic->rxs) return;
1869 if (RU_SUSPENDED != nic->ru_running) return;
1871 /* handle init time starts */
1872 if (!rx) rx = nic->rxs;
1874 /* (Re)start RU if suspended or idle and RFA is non-NULL */
1876 e100_exec_cmd(nic, ruc_start, rx->dma_addr);
1877 nic->ru_running = RU_RUNNING;
1881 #define RFD_BUF_LEN (sizeof(struct rfd) + VLAN_ETH_FRAME_LEN)
1882 static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
1884 if (!(rx->skb = netdev_alloc_skb_ip_align(nic->netdev, RFD_BUF_LEN)))
1887 /* Init, and map the RFD. */
1888 skb_copy_to_linear_data(rx->skb, &nic->blank_rfd, sizeof(struct rfd));
1889 rx->dma_addr = pci_map_single(nic->pdev, rx->skb->data,
1890 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
1892 if (pci_dma_mapping_error(nic->pdev, rx->dma_addr)) {
1893 dev_kfree_skb_any(rx->skb);
1899 /* Link the RFD to end of RFA by linking previous RFD to
1900 * this one. We are safe to touch the previous RFD because
1901 * it is protected by the before last buffer's el bit being set */
1902 if (rx->prev->skb) {
1903 struct rfd *prev_rfd = (struct rfd *)rx->prev->skb->data;
1904 put_unaligned_le32(rx->dma_addr, &prev_rfd->link);
1905 pci_dma_sync_single_for_device(nic->pdev, rx->prev->dma_addr,
1906 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
1912 static int e100_rx_indicate(struct nic *nic, struct rx *rx,
1913 unsigned int *work_done, unsigned int work_to_do)
1915 struct net_device *dev = nic->netdev;
1916 struct sk_buff *skb = rx->skb;
1917 struct rfd *rfd = (struct rfd *)skb->data;
1918 u16 rfd_status, actual_size;
1920 if (unlikely(work_done && *work_done >= work_to_do))
1923 /* Need to sync before taking a peek at cb_complete bit */
1924 pci_dma_sync_single_for_cpu(nic->pdev, rx->dma_addr,
1925 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
1926 rfd_status = le16_to_cpu(rfd->status);
1928 netif_printk(nic, rx_status, KERN_DEBUG, nic->netdev,
1929 "status=0x%04X\n", rfd_status);
1931 /* If data isn't ready, nothing to indicate */
1932 if (unlikely(!(rfd_status & cb_complete))) {
1933 /* If the next buffer has the el bit, but we think the receiver
1934 * is still running, check to see if it really stopped while
1935 * we had interrupts off.
1936 * This allows for a fast restart without re-enabling
1938 if ((le16_to_cpu(rfd->command) & cb_el) &&
1939 (RU_RUNNING == nic->ru_running))
1941 if (ioread8(&nic->csr->scb.status) & rus_no_res)
1942 nic->ru_running = RU_SUSPENDED;
1943 pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr,
1945 PCI_DMA_FROMDEVICE);
1949 /* Get actual data size */
1950 actual_size = le16_to_cpu(rfd->actual_size) & 0x3FFF;
1951 if (unlikely(actual_size > RFD_BUF_LEN - sizeof(struct rfd)))
1952 actual_size = RFD_BUF_LEN - sizeof(struct rfd);
1955 pci_unmap_single(nic->pdev, rx->dma_addr,
1956 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
1958 /* If this buffer has the el bit, but we think the receiver
1959 * is still running, check to see if it really stopped while
1960 * we had interrupts off.
1961 * This allows for a fast restart without re-enabling interrupts.
1962 * This can happen when the RU sees the size change but also sees
1963 * the el bit set. */
1964 if ((le16_to_cpu(rfd->command) & cb_el) &&
1965 (RU_RUNNING == nic->ru_running)) {
1967 if (ioread8(&nic->csr->scb.status) & rus_no_res)
1968 nic->ru_running = RU_SUSPENDED;
1971 /* Pull off the RFD and put the actual data (minus eth hdr) */
1972 skb_reserve(skb, sizeof(struct rfd));
1973 skb_put(skb, actual_size);
1974 skb->protocol = eth_type_trans(skb, nic->netdev);
1976 if (unlikely(!(rfd_status & cb_ok))) {
1977 /* Don't indicate if hardware indicates errors */
1978 dev_kfree_skb_any(skb);
1979 } else if (actual_size > ETH_DATA_LEN + VLAN_ETH_HLEN) {
1980 /* Don't indicate oversized frames */
1981 nic->rx_over_length_errors++;
1982 dev_kfree_skb_any(skb);
1984 dev->stats.rx_packets++;
1985 dev->stats.rx_bytes += actual_size;
1986 netif_receive_skb(skb);
1996 static void e100_rx_clean(struct nic *nic, unsigned int *work_done,
1997 unsigned int work_to_do)
2000 int restart_required = 0, err = 0;
2001 struct rx *old_before_last_rx, *new_before_last_rx;
2002 struct rfd *old_before_last_rfd, *new_before_last_rfd;
2004 /* Indicate newly arrived packets */
2005 for (rx = nic->rx_to_clean; rx->skb; rx = nic->rx_to_clean = rx->next) {
2006 err = e100_rx_indicate(nic, rx, work_done, work_to_do);
2007 /* Hit quota or no more to clean */
2008 if (-EAGAIN == err || -ENODATA == err)
2013 /* On EAGAIN, hit quota so have more work to do, restart once
2014 * cleanup is complete.
2015 * Else, are we already rnr? then pay attention!!! this ensures that
2016 * the state machine progression never allows a start with a
2017 * partially cleaned list, avoiding a race between hardware
2018 * and rx_to_clean when in NAPI mode */
2019 if (-EAGAIN != err && RU_SUSPENDED == nic->ru_running)
2020 restart_required = 1;
2022 old_before_last_rx = nic->rx_to_use->prev->prev;
2023 old_before_last_rfd = (struct rfd *)old_before_last_rx->skb->data;
2025 /* Alloc new skbs to refill list */
2026 for (rx = nic->rx_to_use; !rx->skb; rx = nic->rx_to_use = rx->next) {
2027 if (unlikely(e100_rx_alloc_skb(nic, rx)))
2028 break; /* Better luck next time (see watchdog) */
2031 new_before_last_rx = nic->rx_to_use->prev->prev;
2032 if (new_before_last_rx != old_before_last_rx) {
2033 /* Set the el-bit on the buffer that is before the last buffer.
2034 * This lets us update the next pointer on the last buffer
2035 * without worrying about hardware touching it.
2036 * We set the size to 0 to prevent hardware from touching this
2038 * When the hardware hits the before last buffer with el-bit
2039 * and size of 0, it will RNR interrupt, the RUS will go into
2040 * the No Resources state. It will not complete nor write to
2042 new_before_last_rfd =
2043 (struct rfd *)new_before_last_rx->skb->data;
2044 new_before_last_rfd->size = 0;
2045 new_before_last_rfd->command |= cpu_to_le16(cb_el);
2046 pci_dma_sync_single_for_device(nic->pdev,
2047 new_before_last_rx->dma_addr, sizeof(struct rfd),
2048 PCI_DMA_BIDIRECTIONAL);
2050 /* Now that we have a new stopping point, we can clear the old
2051 * stopping point. We must sync twice to get the proper
2052 * ordering on the hardware side of things. */
2053 old_before_last_rfd->command &= ~cpu_to_le16(cb_el);
2054 pci_dma_sync_single_for_device(nic->pdev,
2055 old_before_last_rx->dma_addr, sizeof(struct rfd),
2056 PCI_DMA_BIDIRECTIONAL);
2057 old_before_last_rfd->size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
2058 pci_dma_sync_single_for_device(nic->pdev,
2059 old_before_last_rx->dma_addr, sizeof(struct rfd),
2060 PCI_DMA_BIDIRECTIONAL);
2063 if (restart_required) {
2065 iowrite8(stat_ack_rnr, &nic->csr->scb.stat_ack);
2066 e100_start_receiver(nic, nic->rx_to_clean);
2072 static void e100_rx_clean_list(struct nic *nic)
2075 unsigned int i, count = nic->params.rfds.count;
2077 nic->ru_running = RU_UNINITIALIZED;
2080 for (rx = nic->rxs, i = 0; i < count; rx++, i++) {
2082 pci_unmap_single(nic->pdev, rx->dma_addr,
2083 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
2084 dev_kfree_skb(rx->skb);
2091 nic->rx_to_use = nic->rx_to_clean = NULL;
2094 static int e100_rx_alloc_list(struct nic *nic)
2097 unsigned int i, count = nic->params.rfds.count;
2098 struct rfd *before_last;
2100 nic->rx_to_use = nic->rx_to_clean = NULL;
2101 nic->ru_running = RU_UNINITIALIZED;
2103 if (!(nic->rxs = kcalloc(count, sizeof(struct rx), GFP_ATOMIC)))
2106 for (rx = nic->rxs, i = 0; i < count; rx++, i++) {
2107 rx->next = (i + 1 < count) ? rx + 1 : nic->rxs;
2108 rx->prev = (i == 0) ? nic->rxs + count - 1 : rx - 1;
2109 if (e100_rx_alloc_skb(nic, rx)) {
2110 e100_rx_clean_list(nic);
2114 /* Set the el-bit on the buffer that is before the last buffer.
2115 * This lets us update the next pointer on the last buffer without
2116 * worrying about hardware touching it.
2117 * We set the size to 0 to prevent hardware from touching this buffer.
2118 * When the hardware hits the before last buffer with el-bit and size
2119 * of 0, it will RNR interrupt, the RU will go into the No Resources
2120 * state. It will not complete nor write to this buffer. */
2121 rx = nic->rxs->prev->prev;
2122 before_last = (struct rfd *)rx->skb->data;
2123 before_last->command |= cpu_to_le16(cb_el);
2124 before_last->size = 0;
2125 pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr,
2126 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
2128 nic->rx_to_use = nic->rx_to_clean = nic->rxs;
2129 nic->ru_running = RU_SUSPENDED;
2134 static irqreturn_t e100_intr(int irq, void *dev_id)
2136 struct net_device *netdev = dev_id;
2137 struct nic *nic = netdev_priv(netdev);
2138 u8 stat_ack = ioread8(&nic->csr->scb.stat_ack);
2140 netif_printk(nic, intr, KERN_DEBUG, nic->netdev,
2141 "stat_ack = 0x%02X\n", stat_ack);
2143 if (stat_ack == stat_ack_not_ours || /* Not our interrupt */
2144 stat_ack == stat_ack_not_present) /* Hardware is ejected */
2147 /* Ack interrupt(s) */
2148 iowrite8(stat_ack, &nic->csr->scb.stat_ack);
2150 /* We hit Receive No Resource (RNR); restart RU after cleaning */
2151 if (stat_ack & stat_ack_rnr)
2152 nic->ru_running = RU_SUSPENDED;
2154 if (likely(napi_schedule_prep(&nic->napi))) {
2155 e100_disable_irq(nic);
2156 __napi_schedule(&nic->napi);
2162 static int e100_poll(struct napi_struct *napi, int budget)
2164 struct nic *nic = container_of(napi, struct nic, napi);
2165 unsigned int work_done = 0;
2167 e100_rx_clean(nic, &work_done, budget);
2170 /* If budget not fully consumed, exit the polling mode */
2171 if (work_done < budget) {
2172 napi_complete(napi);
2173 e100_enable_irq(nic);
2179 #ifdef CONFIG_NET_POLL_CONTROLLER
2180 static void e100_netpoll(struct net_device *netdev)
2182 struct nic *nic = netdev_priv(netdev);
2184 e100_disable_irq(nic);
2185 e100_intr(nic->pdev->irq, netdev);
2187 e100_enable_irq(nic);
2191 static int e100_set_mac_address(struct net_device *netdev, void *p)
2193 struct nic *nic = netdev_priv(netdev);
2194 struct sockaddr *addr = p;
2196 if (!is_valid_ether_addr(addr->sa_data))
2197 return -EADDRNOTAVAIL;
2199 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2200 e100_exec_cb(nic, NULL, e100_setup_iaaddr);
2205 static int e100_change_mtu(struct net_device *netdev, int new_mtu)
2207 if (new_mtu < ETH_ZLEN || new_mtu > ETH_DATA_LEN)
2209 netdev->mtu = new_mtu;
2213 static int e100_asf(struct nic *nic)
2215 /* ASF can be enabled from eeprom */
2216 return((nic->pdev->device >= 0x1050) && (nic->pdev->device <= 0x1057) &&
2217 (nic->eeprom[eeprom_config_asf] & eeprom_asf) &&
2218 !(nic->eeprom[eeprom_config_asf] & eeprom_gcl) &&
2219 ((nic->eeprom[eeprom_smbus_addr] & 0xFF) != 0xFE));
2222 static int e100_up(struct nic *nic)
2226 if ((err = e100_rx_alloc_list(nic)))
2228 if ((err = e100_alloc_cbs(nic)))
2229 goto err_rx_clean_list;
2230 if ((err = e100_hw_init(nic)))
2232 e100_set_multicast_list(nic->netdev);
2233 e100_start_receiver(nic, NULL);
2234 mod_timer(&nic->watchdog, jiffies);
2235 if ((err = request_irq(nic->pdev->irq, e100_intr, IRQF_SHARED,
2236 nic->netdev->name, nic->netdev)))
2238 netif_wake_queue(nic->netdev);
2239 napi_enable(&nic->napi);
2240 /* enable ints _after_ enabling poll, preventing a race between
2241 * disable ints+schedule */
2242 e100_enable_irq(nic);
2246 del_timer_sync(&nic->watchdog);
2248 e100_clean_cbs(nic);
2250 e100_rx_clean_list(nic);
2254 static void e100_down(struct nic *nic)
2256 /* wait here for poll to complete */
2257 napi_disable(&nic->napi);
2258 netif_stop_queue(nic->netdev);
2260 free_irq(nic->pdev->irq, nic->netdev);
2261 del_timer_sync(&nic->watchdog);
2262 netif_carrier_off(nic->netdev);
2263 e100_clean_cbs(nic);
2264 e100_rx_clean_list(nic);
2267 static void e100_tx_timeout(struct net_device *netdev)
2269 struct nic *nic = netdev_priv(netdev);
2271 /* Reset outside of interrupt context, to avoid request_irq
2272 * in interrupt context */
2273 schedule_work(&nic->tx_timeout_task);
2276 static void e100_tx_timeout_task(struct work_struct *work)
2278 struct nic *nic = container_of(work, struct nic, tx_timeout_task);
2279 struct net_device *netdev = nic->netdev;
2281 netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev,
2282 "scb.status=0x%02X\n", ioread8(&nic->csr->scb.status));
2283 e100_down(netdev_priv(netdev));
2284 e100_up(netdev_priv(netdev));
2287 static int e100_loopback_test(struct nic *nic, enum loopback loopback_mode)
2290 struct sk_buff *skb;
2292 /* Use driver resources to perform internal MAC or PHY
2293 * loopback test. A single packet is prepared and transmitted
2294 * in loopback mode, and the test passes if the received
2295 * packet compares byte-for-byte to the transmitted packet. */
2297 if ((err = e100_rx_alloc_list(nic)))
2299 if ((err = e100_alloc_cbs(nic)))
2302 /* ICH PHY loopback is broken so do MAC loopback instead */
2303 if (nic->flags & ich && loopback_mode == lb_phy)
2304 loopback_mode = lb_mac;
2306 nic->loopback = loopback_mode;
2307 if ((err = e100_hw_init(nic)))
2308 goto err_loopback_none;
2310 if (loopback_mode == lb_phy)
2311 mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR,
2314 e100_start_receiver(nic, NULL);
2316 if (!(skb = netdev_alloc_skb(nic->netdev, ETH_DATA_LEN))) {
2318 goto err_loopback_none;
2320 skb_put(skb, ETH_DATA_LEN);
2321 memset(skb->data, 0xFF, ETH_DATA_LEN);
2322 e100_xmit_frame(skb, nic->netdev);
2326 pci_dma_sync_single_for_cpu(nic->pdev, nic->rx_to_clean->dma_addr,
2327 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
2329 if (memcmp(nic->rx_to_clean->skb->data + sizeof(struct rfd),
2330 skb->data, ETH_DATA_LEN))
2334 mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR, 0);
2335 nic->loopback = lb_none;
2336 e100_clean_cbs(nic);
2339 e100_rx_clean_list(nic);
2343 #define MII_LED_CONTROL 0x1B
2344 #define E100_82552_LED_OVERRIDE 0x19
2345 #define E100_82552_LED_ON 0x000F /* LEDTX and LED_RX both on */
2346 #define E100_82552_LED_OFF 0x000A /* LEDTX and LED_RX both off */
2347 static void e100_blink_led(unsigned long data)
2349 struct nic *nic = (struct nic *)data;
2356 u16 led_reg = MII_LED_CONTROL;
2358 if (nic->phy == phy_82552_v) {
2359 led_reg = E100_82552_LED_OVERRIDE;
2361 nic->leds = (nic->leds == E100_82552_LED_ON) ?
2362 E100_82552_LED_OFF : E100_82552_LED_ON;
2364 nic->leds = (nic->leds & led_on) ? led_off :
2365 (nic->mac < mac_82559_D101M) ? led_on_557 :
2368 mdio_write(nic->netdev, nic->mii.phy_id, led_reg, nic->leds);
2369 mod_timer(&nic->blink_timer, jiffies + HZ / 4);
2372 static int e100_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
2374 struct nic *nic = netdev_priv(netdev);
2375 return mii_ethtool_gset(&nic->mii, cmd);
2378 static int e100_set_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
2380 struct nic *nic = netdev_priv(netdev);
2383 mdio_write(netdev, nic->mii.phy_id, MII_BMCR, BMCR_RESET);
2384 err = mii_ethtool_sset(&nic->mii, cmd);
2385 e100_exec_cb(nic, NULL, e100_configure);
2390 static void e100_get_drvinfo(struct net_device *netdev,
2391 struct ethtool_drvinfo *info)
2393 struct nic *nic = netdev_priv(netdev);
2394 strcpy(info->driver, DRV_NAME);
2395 strcpy(info->version, DRV_VERSION);
2396 strcpy(info->fw_version, "N/A");
2397 strcpy(info->bus_info, pci_name(nic->pdev));
2400 #define E100_PHY_REGS 0x1C
2401 static int e100_get_regs_len(struct net_device *netdev)
2403 struct nic *nic = netdev_priv(netdev);
2404 return 1 + E100_PHY_REGS + sizeof(nic->mem->dump_buf);
2407 static void e100_get_regs(struct net_device *netdev,
2408 struct ethtool_regs *regs, void *p)
2410 struct nic *nic = netdev_priv(netdev);
2414 regs->version = (1 << 24) | nic->pdev->revision;
2415 buff[0] = ioread8(&nic->csr->scb.cmd_hi) << 24 |
2416 ioread8(&nic->csr->scb.cmd_lo) << 16 |
2417 ioread16(&nic->csr->scb.status);
2418 for (i = E100_PHY_REGS; i >= 0; i--)
2419 buff[1 + E100_PHY_REGS - i] =
2420 mdio_read(netdev, nic->mii.phy_id, i);
2421 memset(nic->mem->dump_buf, 0, sizeof(nic->mem->dump_buf));
2422 e100_exec_cb(nic, NULL, e100_dump);
2424 memcpy(&buff[2 + E100_PHY_REGS], nic->mem->dump_buf,
2425 sizeof(nic->mem->dump_buf));
2428 static void e100_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2430 struct nic *nic = netdev_priv(netdev);
2431 wol->supported = (nic->mac >= mac_82558_D101_A4) ? WAKE_MAGIC : 0;
2432 wol->wolopts = (nic->flags & wol_magic) ? WAKE_MAGIC : 0;
2435 static int e100_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2437 struct nic *nic = netdev_priv(netdev);
2439 if ((wol->wolopts && wol->wolopts != WAKE_MAGIC) ||
2440 !device_can_wakeup(&nic->pdev->dev))
2444 nic->flags |= wol_magic;
2446 nic->flags &= ~wol_magic;
2448 device_set_wakeup_enable(&nic->pdev->dev, wol->wolopts);
2450 e100_exec_cb(nic, NULL, e100_configure);
2455 static u32 e100_get_msglevel(struct net_device *netdev)
2457 struct nic *nic = netdev_priv(netdev);
2458 return nic->msg_enable;
2461 static void e100_set_msglevel(struct net_device *netdev, u32 value)
2463 struct nic *nic = netdev_priv(netdev);
2464 nic->msg_enable = value;
2467 static int e100_nway_reset(struct net_device *netdev)
2469 struct nic *nic = netdev_priv(netdev);
2470 return mii_nway_restart(&nic->mii);
2473 static u32 e100_get_link(struct net_device *netdev)
2475 struct nic *nic = netdev_priv(netdev);
2476 return mii_link_ok(&nic->mii);
2479 static int e100_get_eeprom_len(struct net_device *netdev)
2481 struct nic *nic = netdev_priv(netdev);
2482 return nic->eeprom_wc << 1;
2485 #define E100_EEPROM_MAGIC 0x1234
2486 static int e100_get_eeprom(struct net_device *netdev,
2487 struct ethtool_eeprom *eeprom, u8 *bytes)
2489 struct nic *nic = netdev_priv(netdev);
2491 eeprom->magic = E100_EEPROM_MAGIC;
2492 memcpy(bytes, &((u8 *)nic->eeprom)[eeprom->offset], eeprom->len);
2497 static int e100_set_eeprom(struct net_device *netdev,
2498 struct ethtool_eeprom *eeprom, u8 *bytes)
2500 struct nic *nic = netdev_priv(netdev);
2502 if (eeprom->magic != E100_EEPROM_MAGIC)
2505 memcpy(&((u8 *)nic->eeprom)[eeprom->offset], bytes, eeprom->len);
2507 return e100_eeprom_save(nic, eeprom->offset >> 1,
2508 (eeprom->len >> 1) + 1);
2511 static void e100_get_ringparam(struct net_device *netdev,
2512 struct ethtool_ringparam *ring)
2514 struct nic *nic = netdev_priv(netdev);
2515 struct param_range *rfds = &nic->params.rfds;
2516 struct param_range *cbs = &nic->params.cbs;
2518 ring->rx_max_pending = rfds->max;
2519 ring->tx_max_pending = cbs->max;
2520 ring->rx_mini_max_pending = 0;
2521 ring->rx_jumbo_max_pending = 0;
2522 ring->rx_pending = rfds->count;
2523 ring->tx_pending = cbs->count;
2524 ring->rx_mini_pending = 0;
2525 ring->rx_jumbo_pending = 0;
2528 static int e100_set_ringparam(struct net_device *netdev,
2529 struct ethtool_ringparam *ring)
2531 struct nic *nic = netdev_priv(netdev);
2532 struct param_range *rfds = &nic->params.rfds;
2533 struct param_range *cbs = &nic->params.cbs;
2535 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
2538 if (netif_running(netdev))
2540 rfds->count = max(ring->rx_pending, rfds->min);
2541 rfds->count = min(rfds->count, rfds->max);
2542 cbs->count = max(ring->tx_pending, cbs->min);
2543 cbs->count = min(cbs->count, cbs->max);
2544 netif_info(nic, drv, nic->netdev, "Ring Param settings: rx: %d, tx %d\n",
2545 rfds->count, cbs->count);
2546 if (netif_running(netdev))
2552 static const char e100_gstrings_test[][ETH_GSTRING_LEN] = {
2553 "Link test (on/offline)",
2554 "Eeprom test (on/offline)",
2555 "Self test (offline)",
2556 "Mac loopback (offline)",
2557 "Phy loopback (offline)",
2559 #define E100_TEST_LEN ARRAY_SIZE(e100_gstrings_test)
2561 static void e100_diag_test(struct net_device *netdev,
2562 struct ethtool_test *test, u64 *data)
2564 struct ethtool_cmd cmd;
2565 struct nic *nic = netdev_priv(netdev);
2568 memset(data, 0, E100_TEST_LEN * sizeof(u64));
2569 data[0] = !mii_link_ok(&nic->mii);
2570 data[1] = e100_eeprom_load(nic);
2571 if (test->flags & ETH_TEST_FL_OFFLINE) {
2573 /* save speed, duplex & autoneg settings */
2574 err = mii_ethtool_gset(&nic->mii, &cmd);
2576 if (netif_running(netdev))
2578 data[2] = e100_self_test(nic);
2579 data[3] = e100_loopback_test(nic, lb_mac);
2580 data[4] = e100_loopback_test(nic, lb_phy);
2582 /* restore speed, duplex & autoneg settings */
2583 err = mii_ethtool_sset(&nic->mii, &cmd);
2585 if (netif_running(netdev))
2588 for (i = 0; i < E100_TEST_LEN; i++)
2589 test->flags |= data[i] ? ETH_TEST_FL_FAILED : 0;
2591 msleep_interruptible(4 * 1000);
2594 static int e100_phys_id(struct net_device *netdev, u32 data)
2596 struct nic *nic = netdev_priv(netdev);
2597 u16 led_reg = (nic->phy == phy_82552_v) ? E100_82552_LED_OVERRIDE :
2600 if (!data || data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ))
2601 data = (u32)(MAX_SCHEDULE_TIMEOUT / HZ);
2602 mod_timer(&nic->blink_timer, jiffies);
2603 msleep_interruptible(data * 1000);
2604 del_timer_sync(&nic->blink_timer);
2605 mdio_write(netdev, nic->mii.phy_id, led_reg, 0);
2610 static const char e100_gstrings_stats[][ETH_GSTRING_LEN] = {
2611 "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
2612 "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
2613 "rx_length_errors", "rx_over_errors", "rx_crc_errors",
2614 "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
2615 "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
2616 "tx_heartbeat_errors", "tx_window_errors",
2617 /* device-specific stats */
2618 "tx_deferred", "tx_single_collisions", "tx_multi_collisions",
2619 "tx_flow_control_pause", "rx_flow_control_pause",
2620 "rx_flow_control_unsupported", "tx_tco_packets", "rx_tco_packets",
2622 #define E100_NET_STATS_LEN 21
2623 #define E100_STATS_LEN ARRAY_SIZE(e100_gstrings_stats)
2625 static int e100_get_sset_count(struct net_device *netdev, int sset)
2629 return E100_TEST_LEN;
2631 return E100_STATS_LEN;
2637 static void e100_get_ethtool_stats(struct net_device *netdev,
2638 struct ethtool_stats *stats, u64 *data)
2640 struct nic *nic = netdev_priv(netdev);
2643 for (i = 0; i < E100_NET_STATS_LEN; i++)
2644 data[i] = ((unsigned long *)&netdev->stats)[i];
2646 data[i++] = nic->tx_deferred;
2647 data[i++] = nic->tx_single_collisions;
2648 data[i++] = nic->tx_multiple_collisions;
2649 data[i++] = nic->tx_fc_pause;
2650 data[i++] = nic->rx_fc_pause;
2651 data[i++] = nic->rx_fc_unsupported;
2652 data[i++] = nic->tx_tco_frames;
2653 data[i++] = nic->rx_tco_frames;
2656 static void e100_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
2658 switch (stringset) {
2660 memcpy(data, *e100_gstrings_test, sizeof(e100_gstrings_test));
2663 memcpy(data, *e100_gstrings_stats, sizeof(e100_gstrings_stats));
2668 static const struct ethtool_ops e100_ethtool_ops = {
2669 .get_settings = e100_get_settings,
2670 .set_settings = e100_set_settings,
2671 .get_drvinfo = e100_get_drvinfo,
2672 .get_regs_len = e100_get_regs_len,
2673 .get_regs = e100_get_regs,
2674 .get_wol = e100_get_wol,
2675 .set_wol = e100_set_wol,
2676 .get_msglevel = e100_get_msglevel,
2677 .set_msglevel = e100_set_msglevel,
2678 .nway_reset = e100_nway_reset,
2679 .get_link = e100_get_link,
2680 .get_eeprom_len = e100_get_eeprom_len,
2681 .get_eeprom = e100_get_eeprom,
2682 .set_eeprom = e100_set_eeprom,
2683 .get_ringparam = e100_get_ringparam,
2684 .set_ringparam = e100_set_ringparam,
2685 .self_test = e100_diag_test,
2686 .get_strings = e100_get_strings,
2687 .phys_id = e100_phys_id,
2688 .get_ethtool_stats = e100_get_ethtool_stats,
2689 .get_sset_count = e100_get_sset_count,
2692 static int e100_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2694 struct nic *nic = netdev_priv(netdev);
2696 return generic_mii_ioctl(&nic->mii, if_mii(ifr), cmd, NULL);
2699 static int e100_alloc(struct nic *nic)
2701 nic->mem = pci_alloc_consistent(nic->pdev, sizeof(struct mem),
2703 return nic->mem ? 0 : -ENOMEM;
2706 static void e100_free(struct nic *nic)
2709 pci_free_consistent(nic->pdev, sizeof(struct mem),
2710 nic->mem, nic->dma_addr);
2715 static int e100_open(struct net_device *netdev)
2717 struct nic *nic = netdev_priv(netdev);
2720 netif_carrier_off(netdev);
2721 if ((err = e100_up(nic)))
2722 netif_err(nic, ifup, nic->netdev, "Cannot open interface, aborting\n");
2726 static int e100_close(struct net_device *netdev)
2728 e100_down(netdev_priv(netdev));
2732 static const struct net_device_ops e100_netdev_ops = {
2733 .ndo_open = e100_open,
2734 .ndo_stop = e100_close,
2735 .ndo_start_xmit = e100_xmit_frame,
2736 .ndo_validate_addr = eth_validate_addr,
2737 .ndo_set_multicast_list = e100_set_multicast_list,
2738 .ndo_set_mac_address = e100_set_mac_address,
2739 .ndo_change_mtu = e100_change_mtu,
2740 .ndo_do_ioctl = e100_do_ioctl,
2741 .ndo_tx_timeout = e100_tx_timeout,
2742 #ifdef CONFIG_NET_POLL_CONTROLLER
2743 .ndo_poll_controller = e100_netpoll,
2747 static int __devinit e100_probe(struct pci_dev *pdev,
2748 const struct pci_device_id *ent)
2750 struct net_device *netdev;
2754 if (!(netdev = alloc_etherdev(sizeof(struct nic)))) {
2755 if (((1 << debug) - 1) & NETIF_MSG_PROBE)
2756 pr_err("Etherdev alloc failed, aborting\n");
2760 netdev->netdev_ops = &e100_netdev_ops;
2761 SET_ETHTOOL_OPS(netdev, &e100_ethtool_ops);
2762 netdev->watchdog_timeo = E100_WATCHDOG_PERIOD;
2763 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
2765 nic = netdev_priv(netdev);
2766 netif_napi_add(netdev, &nic->napi, e100_poll, E100_NAPI_WEIGHT);
2767 nic->netdev = netdev;
2769 nic->msg_enable = (1 << debug) - 1;
2770 nic->mdio_ctrl = mdio_ctrl_hw;
2771 pci_set_drvdata(pdev, netdev);
2773 if ((err = pci_enable_device(pdev))) {
2774 netif_err(nic, probe, nic->netdev, "Cannot enable PCI device, aborting\n");
2775 goto err_out_free_dev;
2778 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2779 netif_err(nic, probe, nic->netdev, "Cannot find proper PCI device base address, aborting\n");
2781 goto err_out_disable_pdev;
2784 if ((err = pci_request_regions(pdev, DRV_NAME))) {
2785 netif_err(nic, probe, nic->netdev, "Cannot obtain PCI resources, aborting\n");
2786 goto err_out_disable_pdev;
2789 if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
2790 netif_err(nic, probe, nic->netdev, "No usable DMA configuration, aborting\n");
2791 goto err_out_free_res;
2794 SET_NETDEV_DEV(netdev, &pdev->dev);
2797 netif_info(nic, probe, nic->netdev, "using i/o access mode\n");
2799 nic->csr = pci_iomap(pdev, (use_io ? 1 : 0), sizeof(struct csr));
2801 netif_err(nic, probe, nic->netdev, "Cannot map device registers, aborting\n");
2803 goto err_out_free_res;
2806 if (ent->driver_data)
2811 e100_get_defaults(nic);
2813 /* locks must be initialized before calling hw_reset */
2814 spin_lock_init(&nic->cb_lock);
2815 spin_lock_init(&nic->cmd_lock);
2816 spin_lock_init(&nic->mdio_lock);
2818 /* Reset the device before pci_set_master() in case device is in some
2819 * funky state and has an interrupt pending - hint: we don't have the
2820 * interrupt handler registered yet. */
2823 pci_set_master(pdev);
2825 init_timer(&nic->watchdog);
2826 nic->watchdog.function = e100_watchdog;
2827 nic->watchdog.data = (unsigned long)nic;
2828 init_timer(&nic->blink_timer);
2829 nic->blink_timer.function = e100_blink_led;
2830 nic->blink_timer.data = (unsigned long)nic;
2832 INIT_WORK(&nic->tx_timeout_task, e100_tx_timeout_task);
2834 if ((err = e100_alloc(nic))) {
2835 netif_err(nic, probe, nic->netdev, "Cannot alloc driver memory, aborting\n");
2836 goto err_out_iounmap;
2839 if ((err = e100_eeprom_load(nic)))
2844 memcpy(netdev->dev_addr, nic->eeprom, ETH_ALEN);
2845 memcpy(netdev->perm_addr, nic->eeprom, ETH_ALEN);
2846 if (!is_valid_ether_addr(netdev->perm_addr)) {
2847 if (!eeprom_bad_csum_allow) {
2848 netif_err(nic, probe, nic->netdev, "Invalid MAC address from EEPROM, aborting\n");
2852 netif_err(nic, probe, nic->netdev, "Invalid MAC address from EEPROM, you MUST configure one.\n");
2856 /* Wol magic packet can be enabled from eeprom */
2857 if ((nic->mac >= mac_82558_D101_A4) &&
2858 (nic->eeprom[eeprom_id] & eeprom_id_wol)) {
2859 nic->flags |= wol_magic;
2860 device_set_wakeup_enable(&pdev->dev, true);
2863 /* ack any pending wake events, disable PME */
2864 pci_pme_active(pdev, false);
2866 strcpy(netdev->name, "eth%d");
2867 if ((err = register_netdev(netdev))) {
2868 netif_err(nic, probe, nic->netdev, "Cannot register net device, aborting\n");
2871 nic->cbs_pool = pci_pool_create(netdev->name,
2873 nic->params.cbs.max * sizeof(struct cb),
2876 netif_info(nic, probe, nic->netdev,
2877 "addr 0x%llx, irq %d, MAC addr %pM\n",
2878 (unsigned long long)pci_resource_start(pdev, use_io ? 1 : 0),
2879 pdev->irq, netdev->dev_addr);
2886 pci_iounmap(pdev, nic->csr);
2888 pci_release_regions(pdev);
2889 err_out_disable_pdev:
2890 pci_disable_device(pdev);
2892 pci_set_drvdata(pdev, NULL);
2893 free_netdev(netdev);
2897 static void __devexit e100_remove(struct pci_dev *pdev)
2899 struct net_device *netdev = pci_get_drvdata(pdev);
2902 struct nic *nic = netdev_priv(netdev);
2903 unregister_netdev(netdev);
2905 pci_iounmap(pdev, nic->csr);
2906 pci_pool_destroy(nic->cbs_pool);
2907 free_netdev(netdev);
2908 pci_release_regions(pdev);
2909 pci_disable_device(pdev);
2910 pci_set_drvdata(pdev, NULL);
2914 #define E100_82552_SMARTSPEED 0x14 /* SmartSpeed Ctrl register */
2915 #define E100_82552_REV_ANEG 0x0200 /* Reverse auto-negotiation */
2916 #define E100_82552_ANEG_NOW 0x0400 /* Auto-negotiate now */
2917 static void __e100_shutdown(struct pci_dev *pdev, bool *enable_wake)
2919 struct net_device *netdev = pci_get_drvdata(pdev);
2920 struct nic *nic = netdev_priv(netdev);
2922 if (netif_running(netdev))
2924 netif_device_detach(netdev);
2926 pci_save_state(pdev);
2928 if ((nic->flags & wol_magic) | e100_asf(nic)) {
2929 /* enable reverse auto-negotiation */
2930 if (nic->phy == phy_82552_v) {
2931 u16 smartspeed = mdio_read(netdev, nic->mii.phy_id,
2932 E100_82552_SMARTSPEED);
2934 mdio_write(netdev, nic->mii.phy_id,
2935 E100_82552_SMARTSPEED, smartspeed |
2936 E100_82552_REV_ANEG | E100_82552_ANEG_NOW);
2938 *enable_wake = true;
2940 *enable_wake = false;
2943 pci_disable_device(pdev);
2946 static int __e100_power_off(struct pci_dev *pdev, bool wake)
2949 return pci_prepare_to_sleep(pdev);
2951 pci_wake_from_d3(pdev, false);
2952 pci_set_power_state(pdev, PCI_D3hot);
2958 static int e100_suspend(struct pci_dev *pdev, pm_message_t state)
2961 __e100_shutdown(pdev, &wake);
2962 return __e100_power_off(pdev, wake);
2965 static int e100_resume(struct pci_dev *pdev)
2967 struct net_device *netdev = pci_get_drvdata(pdev);
2968 struct nic *nic = netdev_priv(netdev);
2970 pci_set_power_state(pdev, PCI_D0);
2971 pci_restore_state(pdev);
2972 /* ack any pending wake events, disable PME */
2973 pci_enable_wake(pdev, 0, 0);
2975 /* disable reverse auto-negotiation */
2976 if (nic->phy == phy_82552_v) {
2977 u16 smartspeed = mdio_read(netdev, nic->mii.phy_id,
2978 E100_82552_SMARTSPEED);
2980 mdio_write(netdev, nic->mii.phy_id,
2981 E100_82552_SMARTSPEED,
2982 smartspeed & ~(E100_82552_REV_ANEG));
2985 netif_device_attach(netdev);
2986 if (netif_running(netdev))
2991 #endif /* CONFIG_PM */
2993 static void e100_shutdown(struct pci_dev *pdev)
2996 __e100_shutdown(pdev, &wake);
2997 if (system_state == SYSTEM_POWER_OFF)
2998 __e100_power_off(pdev, wake);
3001 /* ------------------ PCI Error Recovery infrastructure -------------- */
3003 * e100_io_error_detected - called when PCI error is detected.
3004 * @pdev: Pointer to PCI device
3005 * @state: The current pci connection state
3007 static pci_ers_result_t e100_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
3009 struct net_device *netdev = pci_get_drvdata(pdev);
3010 struct nic *nic = netdev_priv(netdev);
3012 netif_device_detach(netdev);
3014 if (state == pci_channel_io_perm_failure)
3015 return PCI_ERS_RESULT_DISCONNECT;
3017 if (netif_running(netdev))
3019 pci_disable_device(pdev);
3021 /* Request a slot reset. */
3022 return PCI_ERS_RESULT_NEED_RESET;
3026 * e100_io_slot_reset - called after the pci bus has been reset.
3027 * @pdev: Pointer to PCI device
3029 * Restart the card from scratch.
3031 static pci_ers_result_t e100_io_slot_reset(struct pci_dev *pdev)
3033 struct net_device *netdev = pci_get_drvdata(pdev);
3034 struct nic *nic = netdev_priv(netdev);
3036 if (pci_enable_device(pdev)) {
3037 pr_err("Cannot re-enable PCI device after reset\n");
3038 return PCI_ERS_RESULT_DISCONNECT;
3040 pci_set_master(pdev);
3042 /* Only one device per card can do a reset */
3043 if (0 != PCI_FUNC(pdev->devfn))
3044 return PCI_ERS_RESULT_RECOVERED;
3048 return PCI_ERS_RESULT_RECOVERED;
3052 * e100_io_resume - resume normal operations
3053 * @pdev: Pointer to PCI device
3055 * Resume normal operations after an error recovery
3056 * sequence has been completed.
3058 static void e100_io_resume(struct pci_dev *pdev)
3060 struct net_device *netdev = pci_get_drvdata(pdev);
3061 struct nic *nic = netdev_priv(netdev);
3063 /* ack any pending wake events, disable PME */
3064 pci_enable_wake(pdev, 0, 0);
3066 netif_device_attach(netdev);
3067 if (netif_running(netdev)) {
3069 mod_timer(&nic->watchdog, jiffies);
3073 static struct pci_error_handlers e100_err_handler = {
3074 .error_detected = e100_io_error_detected,
3075 .slot_reset = e100_io_slot_reset,
3076 .resume = e100_io_resume,
3079 static struct pci_driver e100_driver = {
3081 .id_table = e100_id_table,
3082 .probe = e100_probe,
3083 .remove = __devexit_p(e100_remove),
3085 /* Power Management hooks */
3086 .suspend = e100_suspend,
3087 .resume = e100_resume,
3089 .shutdown = e100_shutdown,
3090 .err_handler = &e100_err_handler,
3093 static int __init e100_init_module(void)
3095 if (((1 << debug) - 1) & NETIF_MSG_DRV) {
3096 pr_info("%s, %s\n", DRV_DESCRIPTION, DRV_VERSION);
3097 pr_info("%s\n", DRV_COPYRIGHT);
3099 return pci_register_driver(&e100_driver);
3102 static void __exit e100_cleanup_module(void)
3104 pci_unregister_driver(&e100_driver);
3107 module_init(e100_init_module);
3108 module_exit(e100_cleanup_module);