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 #include <linux/module.h>
151 #include <linux/moduleparam.h>
152 #include <linux/kernel.h>
153 #include <linux/types.h>
154 #include <linux/slab.h>
155 #include <linux/delay.h>
156 #include <linux/init.h>
157 #include <linux/pci.h>
158 #include <linux/dma-mapping.h>
159 #include <linux/netdevice.h>
160 #include <linux/etherdevice.h>
161 #include <linux/mii.h>
162 #include <linux/if_vlan.h>
163 #include <linux/skbuff.h>
164 #include <linux/ethtool.h>
165 #include <linux/string.h>
166 #include <linux/firmware.h>
167 #include <asm/unaligned.h>
170 #define DRV_NAME "e100"
171 #define DRV_EXT "-NAPI"
172 #define DRV_VERSION "3.5.24-k2"DRV_EXT
173 #define DRV_DESCRIPTION "Intel(R) PRO/100 Network Driver"
174 #define DRV_COPYRIGHT "Copyright(c) 1999-2006 Intel Corporation"
175 #define PFX DRV_NAME ": "
177 #define E100_WATCHDOG_PERIOD (2 * HZ)
178 #define E100_NAPI_WEIGHT 16
180 #define FIRMWARE_D101M "e100/d101m_ucode.bin"
181 #define FIRMWARE_D101S "e100/d101s_ucode.bin"
182 #define FIRMWARE_D102E "e100/d102e_ucode.bin"
184 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
185 MODULE_AUTHOR(DRV_COPYRIGHT
);
186 MODULE_LICENSE("GPL");
187 MODULE_VERSION(DRV_VERSION
);
188 MODULE_FIRMWARE(FIRMWARE_D101M
);
189 MODULE_FIRMWARE(FIRMWARE_D101S
);
190 MODULE_FIRMWARE(FIRMWARE_D102E
);
192 static int debug
= 3;
193 static int eeprom_bad_csum_allow
= 0;
194 static int use_io
= 0;
195 module_param(debug
, int, 0);
196 module_param(eeprom_bad_csum_allow
, int, 0);
197 module_param(use_io
, int, 0);
198 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
199 MODULE_PARM_DESC(eeprom_bad_csum_allow
, "Allow bad eeprom checksums");
200 MODULE_PARM_DESC(use_io
, "Force use of i/o access mode");
201 #define DPRINTK(nlevel, klevel, fmt, args...) \
202 (void)((NETIF_MSG_##nlevel & nic->msg_enable) && \
203 printk(KERN_##klevel PFX "%s: %s: " fmt, nic->netdev->name, \
206 #define INTEL_8255X_ETHERNET_DEVICE(device_id, ich) {\
207 PCI_VENDOR_ID_INTEL, device_id, PCI_ANY_ID, PCI_ANY_ID, \
208 PCI_CLASS_NETWORK_ETHERNET << 8, 0xFFFF00, ich }
209 static struct pci_device_id e100_id_table
[] = {
210 INTEL_8255X_ETHERNET_DEVICE(0x1029, 0),
211 INTEL_8255X_ETHERNET_DEVICE(0x1030, 0),
212 INTEL_8255X_ETHERNET_DEVICE(0x1031, 3),
213 INTEL_8255X_ETHERNET_DEVICE(0x1032, 3),
214 INTEL_8255X_ETHERNET_DEVICE(0x1033, 3),
215 INTEL_8255X_ETHERNET_DEVICE(0x1034, 3),
216 INTEL_8255X_ETHERNET_DEVICE(0x1038, 3),
217 INTEL_8255X_ETHERNET_DEVICE(0x1039, 4),
218 INTEL_8255X_ETHERNET_DEVICE(0x103A, 4),
219 INTEL_8255X_ETHERNET_DEVICE(0x103B, 4),
220 INTEL_8255X_ETHERNET_DEVICE(0x103C, 4),
221 INTEL_8255X_ETHERNET_DEVICE(0x103D, 4),
222 INTEL_8255X_ETHERNET_DEVICE(0x103E, 4),
223 INTEL_8255X_ETHERNET_DEVICE(0x1050, 5),
224 INTEL_8255X_ETHERNET_DEVICE(0x1051, 5),
225 INTEL_8255X_ETHERNET_DEVICE(0x1052, 5),
226 INTEL_8255X_ETHERNET_DEVICE(0x1053, 5),
227 INTEL_8255X_ETHERNET_DEVICE(0x1054, 5),
228 INTEL_8255X_ETHERNET_DEVICE(0x1055, 5),
229 INTEL_8255X_ETHERNET_DEVICE(0x1056, 5),
230 INTEL_8255X_ETHERNET_DEVICE(0x1057, 5),
231 INTEL_8255X_ETHERNET_DEVICE(0x1059, 0),
232 INTEL_8255X_ETHERNET_DEVICE(0x1064, 6),
233 INTEL_8255X_ETHERNET_DEVICE(0x1065, 6),
234 INTEL_8255X_ETHERNET_DEVICE(0x1066, 6),
235 INTEL_8255X_ETHERNET_DEVICE(0x1067, 6),
236 INTEL_8255X_ETHERNET_DEVICE(0x1068, 6),
237 INTEL_8255X_ETHERNET_DEVICE(0x1069, 6),
238 INTEL_8255X_ETHERNET_DEVICE(0x106A, 6),
239 INTEL_8255X_ETHERNET_DEVICE(0x106B, 6),
240 INTEL_8255X_ETHERNET_DEVICE(0x1091, 7),
241 INTEL_8255X_ETHERNET_DEVICE(0x1092, 7),
242 INTEL_8255X_ETHERNET_DEVICE(0x1093, 7),
243 INTEL_8255X_ETHERNET_DEVICE(0x1094, 7),
244 INTEL_8255X_ETHERNET_DEVICE(0x1095, 7),
245 INTEL_8255X_ETHERNET_DEVICE(0x10fe, 7),
246 INTEL_8255X_ETHERNET_DEVICE(0x1209, 0),
247 INTEL_8255X_ETHERNET_DEVICE(0x1229, 0),
248 INTEL_8255X_ETHERNET_DEVICE(0x2449, 2),
249 INTEL_8255X_ETHERNET_DEVICE(0x2459, 2),
250 INTEL_8255X_ETHERNET_DEVICE(0x245D, 2),
251 INTEL_8255X_ETHERNET_DEVICE(0x27DC, 7),
254 MODULE_DEVICE_TABLE(pci
, e100_id_table
);
257 mac_82557_D100_A
= 0,
258 mac_82557_D100_B
= 1,
259 mac_82557_D100_C
= 2,
260 mac_82558_D101_A4
= 4,
261 mac_82558_D101_B0
= 5,
265 mac_82550_D102_C
= 13,
273 phy_100a
= 0x000003E0,
274 phy_100c
= 0x035002A8,
275 phy_82555_tx
= 0x015002A8,
276 phy_nsc_tx
= 0x5C002000,
277 phy_82562_et
= 0x033002A8,
278 phy_82562_em
= 0x032002A8,
279 phy_82562_ek
= 0x031002A8,
280 phy_82562_eh
= 0x017002A8,
281 phy_82552_v
= 0xd061004d,
282 phy_unknown
= 0xFFFFFFFF,
285 /* CSR (Control/Status Registers) */
311 RU_UNINITIALIZED
= -1,
315 stat_ack_not_ours
= 0x00,
316 stat_ack_sw_gen
= 0x04,
318 stat_ack_cu_idle
= 0x20,
319 stat_ack_frame_rx
= 0x40,
320 stat_ack_cu_cmd_done
= 0x80,
321 stat_ack_not_present
= 0xFF,
322 stat_ack_rx
= (stat_ack_sw_gen
| stat_ack_rnr
| stat_ack_frame_rx
),
323 stat_ack_tx
= (stat_ack_cu_idle
| stat_ack_cu_cmd_done
),
327 irq_mask_none
= 0x00,
335 ruc_load_base
= 0x06,
338 cuc_dump_addr
= 0x40,
339 cuc_dump_stats
= 0x50,
340 cuc_load_base
= 0x60,
341 cuc_dump_reset
= 0x70,
345 cuc_dump_complete
= 0x0000A005,
346 cuc_dump_reset_complete
= 0x0000A007,
350 software_reset
= 0x0000,
352 selective_reset
= 0x0002,
355 enum eeprom_ctrl_lo
{
363 mdi_write
= 0x04000000,
364 mdi_read
= 0x08000000,
365 mdi_ready
= 0x10000000,
375 enum eeprom_offsets
{
376 eeprom_cnfg_mdix
= 0x03,
377 eeprom_phy_iface
= 0x06,
379 eeprom_config_asf
= 0x0D,
380 eeprom_smbus_addr
= 0x90,
383 enum eeprom_cnfg_mdix
{
384 eeprom_mdix_enabled
= 0x0080,
387 enum eeprom_phy_iface
{
400 eeprom_id_wol
= 0x0020,
403 enum eeprom_config_asf
{
409 cb_complete
= 0x8000,
438 struct rx
*next
, *prev
;
443 #if defined(__BIG_ENDIAN_BITFIELD)
449 /*0*/ u8
X(byte_count
:6, pad0
:2);
450 /*1*/ u8
X(X(rx_fifo_limit
:4, tx_fifo_limit
:3), pad1
:1);
451 /*2*/ u8 adaptive_ifs
;
452 /*3*/ u8
X(X(X(X(mwi_enable
:1, type_enable
:1), read_align_enable
:1),
453 term_write_cache_line
:1), pad3
:4);
454 /*4*/ u8
X(rx_dma_max_count
:7, pad4
:1);
455 /*5*/ u8
X(tx_dma_max_count
:7, dma_max_count_enable
:1);
456 /*6*/ u8
X(X(X(X(X(X(X(late_scb_update
:1, direct_rx_dma
:1),
457 tno_intr
:1), cna_intr
:1), standard_tcb
:1), standard_stat_counter
:1),
458 rx_discard_overruns
:1), rx_save_bad_frames
:1);
459 /*7*/ u8
X(X(X(X(X(rx_discard_short_frames
:1, tx_underrun_retry
:2),
460 pad7
:2), rx_extended_rfd
:1), tx_two_frames_in_fifo
:1),
462 /*8*/ u8
X(X(mii_mode
:1, pad8
:6), csma_disabled
:1);
463 /*9*/ u8
X(X(X(X(X(rx_tcpudp_checksum
:1, pad9
:3), vlan_arp_tco
:1),
464 link_status_wake
:1), arp_wake
:1), mcmatch_wake
:1);
465 /*10*/ u8
X(X(X(pad10
:3, no_source_addr_insertion
:1), preamble_length
:2),
467 /*11*/ u8
X(linear_priority
:3, pad11
:5);
468 /*12*/ u8
X(X(linear_priority_mode
:1, pad12
:3), ifs
:4);
469 /*13*/ u8 ip_addr_lo
;
470 /*14*/ u8 ip_addr_hi
;
471 /*15*/ u8
X(X(X(X(X(X(X(promiscuous_mode
:1, broadcast_disabled
:1),
472 wait_after_win
:1), pad15_1
:1), ignore_ul_bit
:1), crc_16_bit
:1),
473 pad15_2
:1), crs_or_cdt
:1);
474 /*16*/ u8 fc_delay_lo
;
475 /*17*/ u8 fc_delay_hi
;
476 /*18*/ u8
X(X(X(X(X(rx_stripping
:1, tx_padding
:1), rx_crc_transfer
:1),
477 rx_long_ok
:1), fc_priority_threshold
:3), pad18
:1);
478 /*19*/ u8
X(X(X(X(X(X(X(addr_wake
:1, magic_packet_disable
:1),
479 fc_disable
:1), fc_restop
:1), fc_restart
:1), fc_reject
:1),
480 full_duplex_force
:1), full_duplex_pin
:1);
481 /*20*/ u8
X(X(X(pad20_1
:5, fc_priority_location
:1), multi_ia
:1), pad20_2
:1);
482 /*21*/ u8
X(X(pad21_1
:3, multicast_all
:1), pad21_2
:4);
483 /*22*/ u8
X(X(rx_d102_mode
:1, rx_vlan_drop
:1), pad22
:6);
487 #define E100_MAX_MULTICAST_ADDRS 64
490 u8 addr
[E100_MAX_MULTICAST_ADDRS
* ETH_ALEN
+ 2/*pad*/];
493 /* Important: keep total struct u32-aligned */
494 #define UCODE_SIZE 134
501 __le32 ucode
[UCODE_SIZE
];
502 struct config config
;
515 __le32 dump_buffer_addr
;
517 struct cb
*next
, *prev
;
523 lb_none
= 0, lb_mac
= 1, lb_phy
= 3,
527 __le32 tx_good_frames
, tx_max_collisions
, tx_late_collisions
,
528 tx_underruns
, tx_lost_crs
, tx_deferred
, tx_single_collisions
,
529 tx_multiple_collisions
, tx_total_collisions
;
530 __le32 rx_good_frames
, rx_crc_errors
, rx_alignment_errors
,
531 rx_resource_errors
, rx_overrun_errors
, rx_cdt_errors
,
532 rx_short_frame_errors
;
533 __le32 fc_xmt_pause
, fc_rcv_pause
, fc_rcv_unsupported
;
534 __le16 xmt_tco_frames
, rcv_tco_frames
;
554 struct param_range rfds
;
555 struct param_range cbs
;
559 /* Begin: frequently used values: keep adjacent for cache effect */
560 u32 msg_enable ____cacheline_aligned
;
561 struct net_device
*netdev
;
562 struct pci_dev
*pdev
;
563 u16 (*mdio_ctrl
)(struct nic
*nic
, u32 addr
, u32 dir
, u32 reg
, u16 data
);
565 struct rx
*rxs ____cacheline_aligned
;
566 struct rx
*rx_to_use
;
567 struct rx
*rx_to_clean
;
568 struct rfd blank_rfd
;
569 enum ru_state ru_running
;
571 spinlock_t cb_lock ____cacheline_aligned
;
573 struct csr __iomem
*csr
;
574 enum scb_cmd_lo cuc_cmd
;
575 unsigned int cbs_avail
;
576 struct napi_struct napi
;
578 struct cb
*cb_to_use
;
579 struct cb
*cb_to_send
;
580 struct cb
*cb_to_clean
;
582 /* End: frequently used values: keep adjacent for cache effect */
586 promiscuous
= (1 << 1),
587 multicast_all
= (1 << 2),
588 wol_magic
= (1 << 3),
589 ich_10h_workaround
= (1 << 4),
590 } flags ____cacheline_aligned
;
594 struct params params
;
595 struct timer_list watchdog
;
596 struct timer_list blink_timer
;
597 struct mii_if_info mii
;
598 struct work_struct tx_timeout_task
;
599 enum loopback loopback
;
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 DPRINTK(HW
, ERR
, "Self-test failed: result=0x%08X\n",
690 nic
->mem
->selftest
.result
);
693 if (nic
->mem
->selftest
.signature
== 0) {
694 DPRINTK(HW
, ERR
, "Self-test failed: timed out\n");
701 static void e100_eeprom_write(struct nic
*nic
, u16 addr_len
, u16 addr
, __le16 data
)
703 u32 cmd_addr_data
[3];
707 /* Three cmds: write/erase enable, write data, write/erase disable */
708 cmd_addr_data
[0] = op_ewen
<< (addr_len
- 2);
709 cmd_addr_data
[1] = (((op_write
<< addr_len
) | addr
) << 16) |
711 cmd_addr_data
[2] = op_ewds
<< (addr_len
- 2);
713 /* Bit-bang cmds to write word to eeprom */
714 for (j
= 0; j
< 3; j
++) {
717 iowrite8(eecs
| eesk
, &nic
->csr
->eeprom_ctrl_lo
);
718 e100_write_flush(nic
); udelay(4);
720 for (i
= 31; i
>= 0; i
--) {
721 ctrl
= (cmd_addr_data
[j
] & (1 << i
)) ?
723 iowrite8(ctrl
, &nic
->csr
->eeprom_ctrl_lo
);
724 e100_write_flush(nic
); udelay(4);
726 iowrite8(ctrl
| eesk
, &nic
->csr
->eeprom_ctrl_lo
);
727 e100_write_flush(nic
); udelay(4);
729 /* Wait 10 msec for cmd to complete */
733 iowrite8(0, &nic
->csr
->eeprom_ctrl_lo
);
734 e100_write_flush(nic
); udelay(4);
738 /* General technique stolen from the eepro100 driver - very clever */
739 static __le16
e100_eeprom_read(struct nic
*nic
, u16
*addr_len
, u16 addr
)
746 cmd_addr_data
= ((op_read
<< *addr_len
) | addr
) << 16;
749 iowrite8(eecs
| eesk
, &nic
->csr
->eeprom_ctrl_lo
);
750 e100_write_flush(nic
); udelay(4);
752 /* Bit-bang to read word from eeprom */
753 for (i
= 31; i
>= 0; i
--) {
754 ctrl
= (cmd_addr_data
& (1 << i
)) ? eecs
| eedi
: eecs
;
755 iowrite8(ctrl
, &nic
->csr
->eeprom_ctrl_lo
);
756 e100_write_flush(nic
); udelay(4);
758 iowrite8(ctrl
| eesk
, &nic
->csr
->eeprom_ctrl_lo
);
759 e100_write_flush(nic
); udelay(4);
761 /* Eeprom drives a dummy zero to EEDO after receiving
762 * complete address. Use this to adjust addr_len. */
763 ctrl
= ioread8(&nic
->csr
->eeprom_ctrl_lo
);
764 if (!(ctrl
& eedo
) && i
> 16) {
765 *addr_len
-= (i
- 16);
769 data
= (data
<< 1) | (ctrl
& eedo
? 1 : 0);
773 iowrite8(0, &nic
->csr
->eeprom_ctrl_lo
);
774 e100_write_flush(nic
); udelay(4);
776 return cpu_to_le16(data
);
779 /* Load entire EEPROM image into driver cache and validate checksum */
780 static int e100_eeprom_load(struct nic
*nic
)
782 u16 addr
, addr_len
= 8, checksum
= 0;
784 /* Try reading with an 8-bit addr len to discover actual addr len */
785 e100_eeprom_read(nic
, &addr_len
, 0);
786 nic
->eeprom_wc
= 1 << addr_len
;
788 for (addr
= 0; addr
< nic
->eeprom_wc
; addr
++) {
789 nic
->eeprom
[addr
] = e100_eeprom_read(nic
, &addr_len
, addr
);
790 if (addr
< nic
->eeprom_wc
- 1)
791 checksum
+= le16_to_cpu(nic
->eeprom
[addr
]);
794 /* The checksum, stored in the last word, is calculated such that
795 * the sum of words should be 0xBABA */
796 if (cpu_to_le16(0xBABA - checksum
) != nic
->eeprom
[nic
->eeprom_wc
- 1]) {
797 DPRINTK(PROBE
, ERR
, "EEPROM corrupted\n");
798 if (!eeprom_bad_csum_allow
)
805 /* Save (portion of) driver EEPROM cache to device and update checksum */
806 static int e100_eeprom_save(struct nic
*nic
, u16 start
, u16 count
)
808 u16 addr
, addr_len
= 8, checksum
= 0;
810 /* Try reading with an 8-bit addr len to discover actual addr len */
811 e100_eeprom_read(nic
, &addr_len
, 0);
812 nic
->eeprom_wc
= 1 << addr_len
;
814 if (start
+ count
>= nic
->eeprom_wc
)
817 for (addr
= start
; addr
< start
+ count
; addr
++)
818 e100_eeprom_write(nic
, addr_len
, addr
, nic
->eeprom
[addr
]);
820 /* The checksum, stored in the last word, is calculated such that
821 * the sum of words should be 0xBABA */
822 for (addr
= 0; addr
< nic
->eeprom_wc
- 1; addr
++)
823 checksum
+= le16_to_cpu(nic
->eeprom
[addr
]);
824 nic
->eeprom
[nic
->eeprom_wc
- 1] = cpu_to_le16(0xBABA - checksum
);
825 e100_eeprom_write(nic
, addr_len
, nic
->eeprom_wc
- 1,
826 nic
->eeprom
[nic
->eeprom_wc
- 1]);
831 #define E100_WAIT_SCB_TIMEOUT 20000 /* we might have to wait 100ms!!! */
832 #define E100_WAIT_SCB_FAST 20 /* delay like the old code */
833 static int e100_exec_cmd(struct nic
*nic
, u8 cmd
, dma_addr_t dma_addr
)
839 spin_lock_irqsave(&nic
->cmd_lock
, flags
);
841 /* Previous command is accepted when SCB clears */
842 for (i
= 0; i
< E100_WAIT_SCB_TIMEOUT
; i
++) {
843 if (likely(!ioread8(&nic
->csr
->scb
.cmd_lo
)))
846 if (unlikely(i
> E100_WAIT_SCB_FAST
))
849 if (unlikely(i
== E100_WAIT_SCB_TIMEOUT
)) {
854 if (unlikely(cmd
!= cuc_resume
))
855 iowrite32(dma_addr
, &nic
->csr
->scb
.gen_ptr
);
856 iowrite8(cmd
, &nic
->csr
->scb
.cmd_lo
);
859 spin_unlock_irqrestore(&nic
->cmd_lock
, flags
);
864 static int e100_exec_cb(struct nic
*nic
, struct sk_buff
*skb
,
865 void (*cb_prepare
)(struct nic
*, struct cb
*, struct sk_buff
*))
871 spin_lock_irqsave(&nic
->cb_lock
, flags
);
873 if (unlikely(!nic
->cbs_avail
)) {
879 nic
->cb_to_use
= cb
->next
;
883 if (unlikely(!nic
->cbs_avail
))
886 cb_prepare(nic
, cb
, skb
);
888 /* Order is important otherwise we'll be in a race with h/w:
889 * set S-bit in current first, then clear S-bit in previous. */
890 cb
->command
|= cpu_to_le16(cb_s
);
892 cb
->prev
->command
&= cpu_to_le16(~cb_s
);
894 while (nic
->cb_to_send
!= nic
->cb_to_use
) {
895 if (unlikely(e100_exec_cmd(nic
, nic
->cuc_cmd
,
896 nic
->cb_to_send
->dma_addr
))) {
897 /* Ok, here's where things get sticky. It's
898 * possible that we can't schedule the command
899 * because the controller is too busy, so
900 * let's just queue the command and try again
901 * when another command is scheduled. */
902 if (err
== -ENOSPC
) {
904 schedule_work(&nic
->tx_timeout_task
);
908 nic
->cuc_cmd
= cuc_resume
;
909 nic
->cb_to_send
= nic
->cb_to_send
->next
;
914 spin_unlock_irqrestore(&nic
->cb_lock
, flags
);
919 static int mdio_read(struct net_device
*netdev
, int addr
, int reg
)
921 struct nic
*nic
= netdev_priv(netdev
);
922 return nic
->mdio_ctrl(nic
, addr
, mdi_read
, reg
, 0);
925 static void mdio_write(struct net_device
*netdev
, int addr
, int reg
, int data
)
927 struct nic
*nic
= netdev_priv(netdev
);
929 nic
->mdio_ctrl(nic
, addr
, mdi_write
, reg
, data
);
932 /* the standard mdio_ctrl() function for usual MII-compliant hardware */
933 static u16
mdio_ctrl_hw(struct nic
*nic
, u32 addr
, u32 dir
, u32 reg
, u16 data
)
941 * Stratus87247: we shouldn't be writing the MDI control
942 * register until the Ready bit shows True. Also, since
943 * manipulation of the MDI control registers is a multi-step
944 * procedure it should be done under lock.
946 spin_lock_irqsave(&nic
->mdio_lock
, flags
);
947 for (i
= 100; i
; --i
) {
948 if (ioread32(&nic
->csr
->mdi_ctrl
) & mdi_ready
)
953 printk("e100.mdio_ctrl(%s) 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
);
967 "%s:addr=%d, reg=%d, data_in=0x%04X, data_out=0x%04X\n",
968 dir
== mdi_read
? "READ" : "WRITE", addr
, reg
, data
, data_out
);
969 return (u16
)data_out
;
972 /* slightly tweaked mdio_ctrl() function for phy_82552_v specifics */
973 static u16
mdio_ctrl_phy_82552_v(struct nic
*nic
,
979 if ((reg
== MII_BMCR
) && (dir
== mdi_write
)) {
980 if (data
& (BMCR_ANRESTART
| BMCR_ANENABLE
)) {
981 u16 advert
= mdio_read(nic
->netdev
, nic
->mii
.phy_id
,
985 * Workaround Si issue where sometimes the part will not
986 * autoneg to 100Mbps even when advertised.
988 if (advert
& ADVERTISE_100FULL
)
989 data
|= BMCR_SPEED100
| BMCR_FULLDPLX
;
990 else if (advert
& ADVERTISE_100HALF
)
991 data
|= BMCR_SPEED100
;
994 return mdio_ctrl_hw(nic
, addr
, dir
, reg
, data
);
997 /* Fully software-emulated mdio_ctrl() function for cards without
998 * MII-compliant PHYs.
999 * For now, this is mainly geared towards 80c24 support; in case of further
1000 * requirements for other types (i82503, ...?) either extend this mechanism
1001 * or split it, whichever is cleaner.
1003 static u16
mdio_ctrl_phy_mii_emulated(struct nic
*nic
,
1009 /* might need to allocate a netdev_priv'ed register array eventually
1010 * to be able to record state changes, but for now
1011 * some fully hardcoded register handling ought to be ok I guess. */
1013 if (dir
== mdi_read
) {
1016 /* Auto-negotiation, right? */
1017 return BMCR_ANENABLE
|
1020 return BMSR_LSTATUS
/* for mii_link_ok() */ |
1024 /* 80c24 is a "combo card" PHY, right? */
1025 return ADVERTISE_10HALF
|
1029 "%s:addr=%d, reg=%d, data=0x%04X: unimplemented emulation!\n",
1030 dir
== mdi_read
? "READ" : "WRITE", addr
, reg
, data
);
1037 "%s:addr=%d, reg=%d, data=0x%04X: unimplemented emulation!\n",
1038 dir
== mdi_read
? "READ" : "WRITE", addr
, reg
, data
);
1043 static inline int e100_phy_supports_mii(struct nic
*nic
)
1045 /* for now, just check it by comparing whether we
1046 are using MII software emulation.
1048 return (nic
->mdio_ctrl
!= mdio_ctrl_phy_mii_emulated
);
1051 static void e100_get_defaults(struct nic
*nic
)
1053 struct param_range rfds
= { .min
= 16, .max
= 256, .count
= 256 };
1054 struct param_range cbs
= { .min
= 64, .max
= 256, .count
= 128 };
1056 /* MAC type is encoded as rev ID; exception: ICH is treated as 82559 */
1057 nic
->mac
= (nic
->flags
& ich
) ? mac_82559_D101M
: nic
->pdev
->revision
;
1058 if (nic
->mac
== mac_unknown
)
1059 nic
->mac
= mac_82557_D100_A
;
1061 nic
->params
.rfds
= rfds
;
1062 nic
->params
.cbs
= cbs
;
1064 /* Quadwords to DMA into FIFO before starting frame transmit */
1065 nic
->tx_threshold
= 0xE0;
1067 /* no interrupt for every tx completion, delay = 256us if not 557 */
1068 nic
->tx_command
= cpu_to_le16(cb_tx
| cb_tx_sf
|
1069 ((nic
->mac
>= mac_82558_D101_A4
) ? cb_cid
: cb_i
));
1071 /* Template for a freshly allocated RFD */
1072 nic
->blank_rfd
.command
= 0;
1073 nic
->blank_rfd
.rbd
= cpu_to_le32(0xFFFFFFFF);
1074 nic
->blank_rfd
.size
= cpu_to_le16(VLAN_ETH_FRAME_LEN
);
1077 nic
->mii
.phy_id_mask
= 0x1F;
1078 nic
->mii
.reg_num_mask
= 0x1F;
1079 nic
->mii
.dev
= nic
->netdev
;
1080 nic
->mii
.mdio_read
= mdio_read
;
1081 nic
->mii
.mdio_write
= mdio_write
;
1084 static void e100_configure(struct nic
*nic
, struct cb
*cb
, struct sk_buff
*skb
)
1086 struct config
*config
= &cb
->u
.config
;
1087 u8
*c
= (u8
*)config
;
1089 cb
->command
= cpu_to_le16(cb_config
);
1091 memset(config
, 0, sizeof(struct config
));
1093 config
->byte_count
= 0x16; /* bytes in this struct */
1094 config
->rx_fifo_limit
= 0x8; /* bytes in FIFO before DMA */
1095 config
->direct_rx_dma
= 0x1; /* reserved */
1096 config
->standard_tcb
= 0x1; /* 1=standard, 0=extended */
1097 config
->standard_stat_counter
= 0x1; /* 1=standard, 0=extended */
1098 config
->rx_discard_short_frames
= 0x1; /* 1=discard, 0=pass */
1099 config
->tx_underrun_retry
= 0x3; /* # of underrun retries */
1100 if (e100_phy_supports_mii(nic
))
1101 config
->mii_mode
= 1; /* 1=MII mode, 0=i82503 mode */
1102 config
->pad10
= 0x6;
1103 config
->no_source_addr_insertion
= 0x1; /* 1=no, 0=yes */
1104 config
->preamble_length
= 0x2; /* 0=1, 1=3, 2=7, 3=15 bytes */
1105 config
->ifs
= 0x6; /* x16 = inter frame spacing */
1106 config
->ip_addr_hi
= 0xF2; /* ARP IP filter - not used */
1107 config
->pad15_1
= 0x1;
1108 config
->pad15_2
= 0x1;
1109 config
->crs_or_cdt
= 0x0; /* 0=CRS only, 1=CRS or CDT */
1110 config
->fc_delay_hi
= 0x40; /* time delay for fc frame */
1111 config
->tx_padding
= 0x1; /* 1=pad short frames */
1112 config
->fc_priority_threshold
= 0x7; /* 7=priority fc disabled */
1113 config
->pad18
= 0x1;
1114 config
->full_duplex_pin
= 0x1; /* 1=examine FDX# pin */
1115 config
->pad20_1
= 0x1F;
1116 config
->fc_priority_location
= 0x1; /* 1=byte#31, 0=byte#19 */
1117 config
->pad21_1
= 0x5;
1119 config
->adaptive_ifs
= nic
->adaptive_ifs
;
1120 config
->loopback
= nic
->loopback
;
1122 if (nic
->mii
.force_media
&& nic
->mii
.full_duplex
)
1123 config
->full_duplex_force
= 0x1; /* 1=force, 0=auto */
1125 if (nic
->flags
& promiscuous
|| nic
->loopback
) {
1126 config
->rx_save_bad_frames
= 0x1; /* 1=save, 0=discard */
1127 config
->rx_discard_short_frames
= 0x0; /* 1=discard, 0=save */
1128 config
->promiscuous_mode
= 0x1; /* 1=on, 0=off */
1131 if (nic
->flags
& multicast_all
)
1132 config
->multicast_all
= 0x1; /* 1=accept, 0=no */
1134 /* disable WoL when up */
1135 if (netif_running(nic
->netdev
) || !(nic
->flags
& wol_magic
))
1136 config
->magic_packet_disable
= 0x1; /* 1=off, 0=on */
1138 if (nic
->mac
>= mac_82558_D101_A4
) {
1139 config
->fc_disable
= 0x1; /* 1=Tx fc off, 0=Tx fc on */
1140 config
->mwi_enable
= 0x1; /* 1=enable, 0=disable */
1141 config
->standard_tcb
= 0x0; /* 1=standard, 0=extended */
1142 config
->rx_long_ok
= 0x1; /* 1=VLANs ok, 0=standard */
1143 if (nic
->mac
>= mac_82559_D101M
) {
1144 config
->tno_intr
= 0x1; /* TCO stats enable */
1145 /* Enable TCO in extended config */
1146 if (nic
->mac
>= mac_82551_10
) {
1147 config
->byte_count
= 0x20; /* extended bytes */
1148 config
->rx_d102_mode
= 0x1; /* GMRC for TCO */
1151 config
->standard_stat_counter
= 0x0;
1155 DPRINTK(HW
, DEBUG
, "[00-07]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1156 c
[0], c
[1], c
[2], c
[3], c
[4], c
[5], c
[6], c
[7]);
1157 DPRINTK(HW
, DEBUG
, "[08-15]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1158 c
[8], c
[9], c
[10], c
[11], c
[12], c
[13], c
[14], c
[15]);
1159 DPRINTK(HW
, DEBUG
, "[16-23]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1160 c
[16], c
[17], c
[18], c
[19], c
[20], c
[21], c
[22], c
[23]);
1163 /*************************************************************************
1164 * CPUSaver parameters
1166 * All CPUSaver parameters are 16-bit literals that are part of a
1167 * "move immediate value" instruction. By changing the value of
1168 * the literal in the instruction before the code is loaded, the
1169 * driver can change the algorithm.
1171 * INTDELAY - This loads the dead-man timer with its initial value.
1172 * When this timer expires the interrupt is asserted, and the
1173 * timer is reset each time a new packet is received. (see
1174 * BUNDLEMAX below to set the limit on number of chained packets)
1175 * The current default is 0x600 or 1536. Experiments show that
1176 * the value should probably stay within the 0x200 - 0x1000.
1179 * This sets the maximum number of frames that will be bundled. In
1180 * some situations, such as the TCP windowing algorithm, it may be
1181 * better to limit the growth of the bundle size than let it go as
1182 * high as it can, because that could cause too much added latency.
1183 * The default is six, because this is the number of packets in the
1184 * default TCP window size. A value of 1 would make CPUSaver indicate
1185 * an interrupt for every frame received. If you do not want to put
1186 * a limit on the bundle size, set this value to xFFFF.
1189 * This contains a bit-mask describing the minimum size frame that
1190 * will be bundled. The default masks the lower 7 bits, which means
1191 * that any frame less than 128 bytes in length will not be bundled,
1192 * but will instead immediately generate an interrupt. This does
1193 * not affect the current bundle in any way. Any frame that is 128
1194 * bytes or large will be bundled normally. This feature is meant
1195 * to provide immediate indication of ACK frames in a TCP environment.
1196 * Customers were seeing poor performance when a machine with CPUSaver
1197 * enabled was sending but not receiving. The delay introduced when
1198 * the ACKs were received was enough to reduce total throughput, because
1199 * the sender would sit idle until the ACK was finally seen.
1201 * The current default is 0xFF80, which masks out the lower 7 bits.
1202 * This means that any frame which is x7F (127) bytes or smaller
1203 * will cause an immediate interrupt. Because this value must be a
1204 * bit mask, there are only a few valid values that can be used. To
1205 * turn this feature off, the driver can write the value xFFFF to the
1206 * lower word of this instruction (in the same way that the other
1207 * parameters are used). Likewise, a value of 0xF800 (2047) would
1208 * cause an interrupt to be generated for every frame, because all
1209 * standard Ethernet frames are <= 2047 bytes in length.
1210 *************************************************************************/
1212 /* if you wish to disable the ucode functionality, while maintaining the
1213 * workarounds it provides, set the following defines to:
1218 #define BUNDLESMALL 1
1219 #define BUNDLEMAX (u16)6
1220 #define INTDELAY (u16)1536 /* 0x600 */
1222 /* Initialize firmware */
1223 static const struct firmware
*e100_request_firmware(struct nic
*nic
)
1225 const char *fw_name
;
1226 const struct firmware
*fw
= nic
->fw
;
1227 u8 timer
, bundle
, min_size
;
1230 /* do not load u-code for ICH devices */
1231 if (nic
->flags
& ich
)
1234 /* Search for ucode match against h/w revision */
1235 if (nic
->mac
== mac_82559_D101M
)
1236 fw_name
= FIRMWARE_D101M
;
1237 else if (nic
->mac
== mac_82559_D101S
)
1238 fw_name
= FIRMWARE_D101S
;
1239 else if (nic
->mac
== mac_82551_F
|| nic
->mac
== mac_82551_10
)
1240 fw_name
= FIRMWARE_D102E
;
1241 else /* No ucode on other devices */
1244 /* If the firmware has not previously been loaded, request a pointer
1245 * to it. If it was previously loaded, we are reinitializing the
1246 * adapter, possibly in a resume from hibernate, in which case
1247 * request_firmware() cannot be used.
1250 err
= request_firmware(&fw
, fw_name
, &nic
->pdev
->dev
);
1253 DPRINTK(PROBE
, ERR
, "Failed to load firmware \"%s\": %d\n",
1255 return ERR_PTR(err
);
1258 /* Firmware should be precisely UCODE_SIZE (words) plus three bytes
1259 indicating the offsets for BUNDLESMALL, BUNDLEMAX, INTDELAY */
1260 if (fw
->size
!= UCODE_SIZE
* 4 + 3) {
1261 DPRINTK(PROBE
, ERR
, "Firmware \"%s\" has wrong size %zu\n",
1263 release_firmware(fw
);
1264 return ERR_PTR(-EINVAL
);
1267 /* Read timer, bundle and min_size from end of firmware blob */
1268 timer
= fw
->data
[UCODE_SIZE
* 4];
1269 bundle
= fw
->data
[UCODE_SIZE
* 4 + 1];
1270 min_size
= fw
->data
[UCODE_SIZE
* 4 + 2];
1272 if (timer
>= UCODE_SIZE
|| bundle
>= UCODE_SIZE
||
1273 min_size
>= UCODE_SIZE
) {
1275 "\"%s\" has bogus offset values (0x%x,0x%x,0x%x)\n",
1276 fw_name
, timer
, bundle
, min_size
);
1277 release_firmware(fw
);
1278 return ERR_PTR(-EINVAL
);
1281 /* OK, firmware is validated and ready to use. Save a pointer
1282 * to it in the nic */
1287 static void e100_setup_ucode(struct nic
*nic
, struct cb
*cb
,
1288 struct sk_buff
*skb
)
1290 const struct firmware
*fw
= (void *)skb
;
1291 u8 timer
, bundle
, min_size
;
1293 /* It's not a real skb; we just abused the fact that e100_exec_cb
1294 will pass it through to here... */
1297 /* firmware is stored as little endian already */
1298 memcpy(cb
->u
.ucode
, fw
->data
, UCODE_SIZE
* 4);
1300 /* Read timer, bundle and min_size from end of firmware blob */
1301 timer
= fw
->data
[UCODE_SIZE
* 4];
1302 bundle
= fw
->data
[UCODE_SIZE
* 4 + 1];
1303 min_size
= fw
->data
[UCODE_SIZE
* 4 + 2];
1305 /* Insert user-tunable settings in cb->u.ucode */
1306 cb
->u
.ucode
[timer
] &= cpu_to_le32(0xFFFF0000);
1307 cb
->u
.ucode
[timer
] |= cpu_to_le32(INTDELAY
);
1308 cb
->u
.ucode
[bundle
] &= cpu_to_le32(0xFFFF0000);
1309 cb
->u
.ucode
[bundle
] |= cpu_to_le32(BUNDLEMAX
);
1310 cb
->u
.ucode
[min_size
] &= cpu_to_le32(0xFFFF0000);
1311 cb
->u
.ucode
[min_size
] |= cpu_to_le32((BUNDLESMALL
) ? 0xFFFF : 0xFF80);
1313 cb
->command
= cpu_to_le16(cb_ucode
| cb_el
);
1316 static inline int e100_load_ucode_wait(struct nic
*nic
)
1318 const struct firmware
*fw
;
1319 int err
= 0, counter
= 50;
1320 struct cb
*cb
= nic
->cb_to_clean
;
1322 fw
= e100_request_firmware(nic
);
1323 /* If it's NULL, then no ucode is required */
1324 if (!fw
|| IS_ERR(fw
))
1327 if ((err
= e100_exec_cb(nic
, (void *)fw
, e100_setup_ucode
)))
1328 DPRINTK(PROBE
,ERR
, "ucode cmd failed with error %d\n", err
);
1330 /* must restart cuc */
1331 nic
->cuc_cmd
= cuc_start
;
1333 /* wait for completion */
1334 e100_write_flush(nic
);
1337 /* wait for possibly (ouch) 500ms */
1338 while (!(cb
->status
& cpu_to_le16(cb_complete
))) {
1340 if (!--counter
) break;
1343 /* ack any interrupts, something could have been set */
1344 iowrite8(~0, &nic
->csr
->scb
.stat_ack
);
1346 /* if the command failed, or is not OK, notify and return */
1347 if (!counter
|| !(cb
->status
& cpu_to_le16(cb_ok
))) {
1348 DPRINTK(PROBE
,ERR
, "ucode load failed\n");
1355 static void e100_setup_iaaddr(struct nic
*nic
, struct cb
*cb
,
1356 struct sk_buff
*skb
)
1358 cb
->command
= cpu_to_le16(cb_iaaddr
);
1359 memcpy(cb
->u
.iaaddr
, nic
->netdev
->dev_addr
, ETH_ALEN
);
1362 static void e100_dump(struct nic
*nic
, struct cb
*cb
, struct sk_buff
*skb
)
1364 cb
->command
= cpu_to_le16(cb_dump
);
1365 cb
->u
.dump_buffer_addr
= cpu_to_le32(nic
->dma_addr
+
1366 offsetof(struct mem
, dump_buf
));
1369 static int e100_phy_check_without_mii(struct nic
*nic
)
1374 phy_type
= (nic
->eeprom
[eeprom_phy_iface
] >> 8) & 0x0f;
1377 case NoSuchPhy
: /* Non-MII PHY; UNTESTED! */
1378 case I82503
: /* Non-MII PHY; UNTESTED! */
1379 case S80C24
: /* Non-MII PHY; tested and working */
1380 /* paragraph from the FreeBSD driver, "FXP_PHY_80C24":
1381 * The Seeq 80c24 AutoDUPLEX(tm) Ethernet Interface Adapter
1382 * doesn't have a programming interface of any sort. The
1383 * media is sensed automatically based on how the link partner
1384 * is configured. This is, in essence, manual configuration.
1386 DPRINTK(PROBE
, INFO
,
1387 "found MII-less i82503 or 80c24 or other PHY\n");
1389 nic
->mdio_ctrl
= mdio_ctrl_phy_mii_emulated
;
1390 nic
->mii
.phy_id
= 0; /* is this ok for an MII-less PHY? */
1392 /* these might be needed for certain MII-less cards...
1393 * nic->flags |= ich;
1394 * nic->flags |= ich_10h_workaround; */
1405 #define NCONFIG_AUTO_SWITCH 0x0080
1406 #define MII_NSC_CONG MII_RESV1
1407 #define NSC_CONG_ENABLE 0x0100
1408 #define NSC_CONG_TXREADY 0x0400
1409 #define ADVERTISE_FC_SUPPORTED 0x0400
1410 static int e100_phy_init(struct nic
*nic
)
1412 struct net_device
*netdev
= nic
->netdev
;
1414 u16 bmcr
, stat
, id_lo
, id_hi
, cong
;
1416 /* Discover phy addr by searching addrs in order {1,0,2,..., 31} */
1417 for (addr
= 0; addr
< 32; addr
++) {
1418 nic
->mii
.phy_id
= (addr
== 0) ? 1 : (addr
== 1) ? 0 : addr
;
1419 bmcr
= mdio_read(netdev
, nic
->mii
.phy_id
, MII_BMCR
);
1420 stat
= mdio_read(netdev
, nic
->mii
.phy_id
, MII_BMSR
);
1421 stat
= mdio_read(netdev
, nic
->mii
.phy_id
, MII_BMSR
);
1422 if (!((bmcr
== 0xFFFF) || ((stat
== 0) && (bmcr
== 0))))
1426 /* uhoh, no PHY detected: check whether we seem to be some
1427 * weird, rare variant which is *known* to not have any MII.
1428 * But do this AFTER MII checking only, since this does
1429 * lookup of EEPROM values which may easily be unreliable. */
1430 if (e100_phy_check_without_mii(nic
))
1431 return 0; /* simply return and hope for the best */
1433 /* for unknown cases log a fatal error */
1435 "Failed to locate any known PHY, aborting.\n");
1439 DPRINTK(HW
, DEBUG
, "phy_addr = %d\n", nic
->mii
.phy_id
);
1442 id_lo
= mdio_read(netdev
, nic
->mii
.phy_id
, MII_PHYSID1
);
1443 id_hi
= mdio_read(netdev
, nic
->mii
.phy_id
, MII_PHYSID2
);
1444 nic
->phy
= (u32
)id_hi
<< 16 | (u32
)id_lo
;
1445 DPRINTK(HW
, DEBUG
, "phy ID = 0x%08X\n", nic
->phy
);
1447 /* Select the phy and isolate the rest */
1448 for (addr
= 0; addr
< 32; addr
++) {
1449 if (addr
!= nic
->mii
.phy_id
) {
1450 mdio_write(netdev
, addr
, MII_BMCR
, BMCR_ISOLATE
);
1451 } else if (nic
->phy
!= phy_82552_v
) {
1452 bmcr
= mdio_read(netdev
, addr
, MII_BMCR
);
1453 mdio_write(netdev
, addr
, MII_BMCR
,
1454 bmcr
& ~BMCR_ISOLATE
);
1458 * Workaround for 82552:
1459 * Clear the ISOLATE bit on selected phy_id last (mirrored on all
1460 * other phy_id's) using bmcr value from addr discovery loop above.
1462 if (nic
->phy
== phy_82552_v
)
1463 mdio_write(netdev
, nic
->mii
.phy_id
, MII_BMCR
,
1464 bmcr
& ~BMCR_ISOLATE
);
1466 /* Handle National tx phys */
1467 #define NCS_PHY_MODEL_MASK 0xFFF0FFFF
1468 if ((nic
->phy
& NCS_PHY_MODEL_MASK
) == phy_nsc_tx
) {
1469 /* Disable congestion control */
1470 cong
= mdio_read(netdev
, nic
->mii
.phy_id
, MII_NSC_CONG
);
1471 cong
|= NSC_CONG_TXREADY
;
1472 cong
&= ~NSC_CONG_ENABLE
;
1473 mdio_write(netdev
, nic
->mii
.phy_id
, MII_NSC_CONG
, cong
);
1476 if (nic
->phy
== phy_82552_v
) {
1477 u16 advert
= mdio_read(netdev
, nic
->mii
.phy_id
, MII_ADVERTISE
);
1479 /* assign special tweaked mdio_ctrl() function */
1480 nic
->mdio_ctrl
= mdio_ctrl_phy_82552_v
;
1482 /* Workaround Si not advertising flow-control during autoneg */
1483 advert
|= ADVERTISE_PAUSE_CAP
| ADVERTISE_PAUSE_ASYM
;
1484 mdio_write(netdev
, nic
->mii
.phy_id
, MII_ADVERTISE
, advert
);
1486 /* Reset for the above changes to take effect */
1487 bmcr
= mdio_read(netdev
, nic
->mii
.phy_id
, MII_BMCR
);
1489 mdio_write(netdev
, nic
->mii
.phy_id
, MII_BMCR
, bmcr
);
1490 } else if ((nic
->mac
>= mac_82550_D102
) || ((nic
->flags
& ich
) &&
1491 (mdio_read(netdev
, nic
->mii
.phy_id
, MII_TPISTATUS
) & 0x8000) &&
1492 !(nic
->eeprom
[eeprom_cnfg_mdix
] & eeprom_mdix_enabled
))) {
1493 /* enable/disable MDI/MDI-X auto-switching. */
1494 mdio_write(netdev
, nic
->mii
.phy_id
, MII_NCONFIG
,
1495 nic
->mii
.force_media
? 0 : NCONFIG_AUTO_SWITCH
);
1501 static int e100_hw_init(struct nic
*nic
)
1507 DPRINTK(HW
, ERR
, "e100_hw_init\n");
1508 if (!in_interrupt() && (err
= e100_self_test(nic
)))
1511 if ((err
= e100_phy_init(nic
)))
1513 if ((err
= e100_exec_cmd(nic
, cuc_load_base
, 0)))
1515 if ((err
= e100_exec_cmd(nic
, ruc_load_base
, 0)))
1517 if ((err
= e100_load_ucode_wait(nic
)))
1519 if ((err
= e100_exec_cb(nic
, NULL
, e100_configure
)))
1521 if ((err
= e100_exec_cb(nic
, NULL
, e100_setup_iaaddr
)))
1523 if ((err
= e100_exec_cmd(nic
, cuc_dump_addr
,
1524 nic
->dma_addr
+ offsetof(struct mem
, stats
))))
1526 if ((err
= e100_exec_cmd(nic
, cuc_dump_reset
, 0)))
1529 e100_disable_irq(nic
);
1534 static void e100_multi(struct nic
*nic
, struct cb
*cb
, struct sk_buff
*skb
)
1536 struct net_device
*netdev
= nic
->netdev
;
1537 struct dev_mc_list
*list
= netdev
->mc_list
;
1538 u16 i
, count
= min(netdev
->mc_count
, E100_MAX_MULTICAST_ADDRS
);
1540 cb
->command
= cpu_to_le16(cb_multi
);
1541 cb
->u
.multi
.count
= cpu_to_le16(count
* ETH_ALEN
);
1542 for (i
= 0; list
&& i
< count
; i
++, list
= list
->next
)
1543 memcpy(&cb
->u
.multi
.addr
[i
*ETH_ALEN
], &list
->dmi_addr
,
1547 static void e100_set_multicast_list(struct net_device
*netdev
)
1549 struct nic
*nic
= netdev_priv(netdev
);
1551 DPRINTK(HW
, DEBUG
, "mc_count=%d, flags=0x%04X\n",
1552 netdev
->mc_count
, netdev
->flags
);
1554 if (netdev
->flags
& IFF_PROMISC
)
1555 nic
->flags
|= promiscuous
;
1557 nic
->flags
&= ~promiscuous
;
1559 if (netdev
->flags
& IFF_ALLMULTI
||
1560 netdev
->mc_count
> E100_MAX_MULTICAST_ADDRS
)
1561 nic
->flags
|= multicast_all
;
1563 nic
->flags
&= ~multicast_all
;
1565 e100_exec_cb(nic
, NULL
, e100_configure
);
1566 e100_exec_cb(nic
, NULL
, e100_multi
);
1569 static void e100_update_stats(struct nic
*nic
)
1571 struct net_device
*dev
= nic
->netdev
;
1572 struct net_device_stats
*ns
= &dev
->stats
;
1573 struct stats
*s
= &nic
->mem
->stats
;
1574 __le32
*complete
= (nic
->mac
< mac_82558_D101_A4
) ? &s
->fc_xmt_pause
:
1575 (nic
->mac
< mac_82559_D101M
) ? (__le32
*)&s
->xmt_tco_frames
:
1578 /* Device's stats reporting may take several microseconds to
1579 * complete, so we're always waiting for results of the
1580 * previous command. */
1582 if (*complete
== cpu_to_le32(cuc_dump_reset_complete
)) {
1584 nic
->tx_frames
= le32_to_cpu(s
->tx_good_frames
);
1585 nic
->tx_collisions
= le32_to_cpu(s
->tx_total_collisions
);
1586 ns
->tx_aborted_errors
+= le32_to_cpu(s
->tx_max_collisions
);
1587 ns
->tx_window_errors
+= le32_to_cpu(s
->tx_late_collisions
);
1588 ns
->tx_carrier_errors
+= le32_to_cpu(s
->tx_lost_crs
);
1589 ns
->tx_fifo_errors
+= le32_to_cpu(s
->tx_underruns
);
1590 ns
->collisions
+= nic
->tx_collisions
;
1591 ns
->tx_errors
+= le32_to_cpu(s
->tx_max_collisions
) +
1592 le32_to_cpu(s
->tx_lost_crs
);
1593 ns
->rx_length_errors
+= le32_to_cpu(s
->rx_short_frame_errors
) +
1594 nic
->rx_over_length_errors
;
1595 ns
->rx_crc_errors
+= le32_to_cpu(s
->rx_crc_errors
);
1596 ns
->rx_frame_errors
+= le32_to_cpu(s
->rx_alignment_errors
);
1597 ns
->rx_over_errors
+= le32_to_cpu(s
->rx_overrun_errors
);
1598 ns
->rx_fifo_errors
+= le32_to_cpu(s
->rx_overrun_errors
);
1599 ns
->rx_missed_errors
+= le32_to_cpu(s
->rx_resource_errors
);
1600 ns
->rx_errors
+= le32_to_cpu(s
->rx_crc_errors
) +
1601 le32_to_cpu(s
->rx_alignment_errors
) +
1602 le32_to_cpu(s
->rx_short_frame_errors
) +
1603 le32_to_cpu(s
->rx_cdt_errors
);
1604 nic
->tx_deferred
+= le32_to_cpu(s
->tx_deferred
);
1605 nic
->tx_single_collisions
+=
1606 le32_to_cpu(s
->tx_single_collisions
);
1607 nic
->tx_multiple_collisions
+=
1608 le32_to_cpu(s
->tx_multiple_collisions
);
1609 if (nic
->mac
>= mac_82558_D101_A4
) {
1610 nic
->tx_fc_pause
+= le32_to_cpu(s
->fc_xmt_pause
);
1611 nic
->rx_fc_pause
+= le32_to_cpu(s
->fc_rcv_pause
);
1612 nic
->rx_fc_unsupported
+=
1613 le32_to_cpu(s
->fc_rcv_unsupported
);
1614 if (nic
->mac
>= mac_82559_D101M
) {
1615 nic
->tx_tco_frames
+=
1616 le16_to_cpu(s
->xmt_tco_frames
);
1617 nic
->rx_tco_frames
+=
1618 le16_to_cpu(s
->rcv_tco_frames
);
1624 if (e100_exec_cmd(nic
, cuc_dump_reset
, 0))
1625 DPRINTK(TX_ERR
, DEBUG
, "exec cuc_dump_reset failed\n");
1628 static void e100_adjust_adaptive_ifs(struct nic
*nic
, int speed
, int duplex
)
1630 /* Adjust inter-frame-spacing (IFS) between two transmits if
1631 * we're getting collisions on a half-duplex connection. */
1633 if (duplex
== DUPLEX_HALF
) {
1634 u32 prev
= nic
->adaptive_ifs
;
1635 u32 min_frames
= (speed
== SPEED_100
) ? 1000 : 100;
1637 if ((nic
->tx_frames
/ 32 < nic
->tx_collisions
) &&
1638 (nic
->tx_frames
> min_frames
)) {
1639 if (nic
->adaptive_ifs
< 60)
1640 nic
->adaptive_ifs
+= 5;
1641 } else if (nic
->tx_frames
< min_frames
) {
1642 if (nic
->adaptive_ifs
>= 5)
1643 nic
->adaptive_ifs
-= 5;
1645 if (nic
->adaptive_ifs
!= prev
)
1646 e100_exec_cb(nic
, NULL
, e100_configure
);
1650 static void e100_watchdog(unsigned long data
)
1652 struct nic
*nic
= (struct nic
*)data
;
1653 struct ethtool_cmd cmd
;
1655 DPRINTK(TIMER
, DEBUG
, "right now = %ld\n", jiffies
);
1657 /* mii library handles link maintenance tasks */
1659 mii_ethtool_gset(&nic
->mii
, &cmd
);
1661 if (mii_link_ok(&nic
->mii
) && !netif_carrier_ok(nic
->netdev
)) {
1662 printk(KERN_INFO
"e100: %s NIC Link is Up %s Mbps %s Duplex\n",
1664 cmd
.speed
== SPEED_100
? "100" : "10",
1665 cmd
.duplex
== DUPLEX_FULL
? "Full" : "Half");
1666 } else if (!mii_link_ok(&nic
->mii
) && netif_carrier_ok(nic
->netdev
)) {
1667 printk(KERN_INFO
"e100: %s NIC Link is Down\n",
1671 mii_check_link(&nic
->mii
);
1673 /* Software generated interrupt to recover from (rare) Rx
1674 * allocation failure.
1675 * Unfortunately have to use a spinlock to not re-enable interrupts
1676 * accidentally, due to hardware that shares a register between the
1677 * interrupt mask bit and the SW Interrupt generation bit */
1678 spin_lock_irq(&nic
->cmd_lock
);
1679 iowrite8(ioread8(&nic
->csr
->scb
.cmd_hi
) | irq_sw_gen
,&nic
->csr
->scb
.cmd_hi
);
1680 e100_write_flush(nic
);
1681 spin_unlock_irq(&nic
->cmd_lock
);
1683 e100_update_stats(nic
);
1684 e100_adjust_adaptive_ifs(nic
, cmd
.speed
, cmd
.duplex
);
1686 if (nic
->mac
<= mac_82557_D100_C
)
1687 /* Issue a multicast command to workaround a 557 lock up */
1688 e100_set_multicast_list(nic
->netdev
);
1690 if (nic
->flags
& ich
&& cmd
.speed
==SPEED_10
&& cmd
.duplex
==DUPLEX_HALF
)
1691 /* Need SW workaround for ICH[x] 10Mbps/half duplex Tx hang. */
1692 nic
->flags
|= ich_10h_workaround
;
1694 nic
->flags
&= ~ich_10h_workaround
;
1696 mod_timer(&nic
->watchdog
,
1697 round_jiffies(jiffies
+ E100_WATCHDOG_PERIOD
));
1700 static void e100_xmit_prepare(struct nic
*nic
, struct cb
*cb
,
1701 struct sk_buff
*skb
)
1703 cb
->command
= nic
->tx_command
;
1704 /* interrupt every 16 packets regardless of delay */
1705 if ((nic
->cbs_avail
& ~15) == nic
->cbs_avail
)
1706 cb
->command
|= cpu_to_le16(cb_i
);
1707 cb
->u
.tcb
.tbd_array
= cb
->dma_addr
+ offsetof(struct cb
, u
.tcb
.tbd
);
1708 cb
->u
.tcb
.tcb_byte_count
= 0;
1709 cb
->u
.tcb
.threshold
= nic
->tx_threshold
;
1710 cb
->u
.tcb
.tbd_count
= 1;
1711 cb
->u
.tcb
.tbd
.buf_addr
= cpu_to_le32(pci_map_single(nic
->pdev
,
1712 skb
->data
, skb
->len
, PCI_DMA_TODEVICE
));
1713 /* check for mapping failure? */
1714 cb
->u
.tcb
.tbd
.size
= cpu_to_le16(skb
->len
);
1717 static netdev_tx_t
e100_xmit_frame(struct sk_buff
*skb
,
1718 struct net_device
*netdev
)
1720 struct nic
*nic
= netdev_priv(netdev
);
1723 if (nic
->flags
& ich_10h_workaround
) {
1724 /* SW workaround for ICH[x] 10Mbps/half duplex Tx hang.
1725 Issue a NOP command followed by a 1us delay before
1726 issuing the Tx command. */
1727 if (e100_exec_cmd(nic
, cuc_nop
, 0))
1728 DPRINTK(TX_ERR
, DEBUG
, "exec cuc_nop failed\n");
1732 err
= e100_exec_cb(nic
, skb
, e100_xmit_prepare
);
1736 /* We queued the skb, but now we're out of space. */
1737 DPRINTK(TX_ERR
, DEBUG
, "No space for CB\n");
1738 netif_stop_queue(netdev
);
1741 /* This is a hard error - log it. */
1742 DPRINTK(TX_ERR
, DEBUG
, "Out of Tx resources, returning skb\n");
1743 netif_stop_queue(netdev
);
1744 return NETDEV_TX_BUSY
;
1747 netdev
->trans_start
= jiffies
;
1748 return NETDEV_TX_OK
;
1751 static int e100_tx_clean(struct nic
*nic
)
1753 struct net_device
*dev
= nic
->netdev
;
1757 spin_lock(&nic
->cb_lock
);
1759 /* Clean CBs marked complete */
1760 for (cb
= nic
->cb_to_clean
;
1761 cb
->status
& cpu_to_le16(cb_complete
);
1762 cb
= nic
->cb_to_clean
= cb
->next
) {
1763 DPRINTK(TX_DONE
, DEBUG
, "cb[%d]->status = 0x%04X\n",
1764 (int)(((void*)cb
- (void*)nic
->cbs
)/sizeof(struct cb
)),
1767 if (likely(cb
->skb
!= NULL
)) {
1768 dev
->stats
.tx_packets
++;
1769 dev
->stats
.tx_bytes
+= cb
->skb
->len
;
1771 pci_unmap_single(nic
->pdev
,
1772 le32_to_cpu(cb
->u
.tcb
.tbd
.buf_addr
),
1773 le16_to_cpu(cb
->u
.tcb
.tbd
.size
),
1775 dev_kfree_skb_any(cb
->skb
);
1783 spin_unlock(&nic
->cb_lock
);
1785 /* Recover from running out of Tx resources in xmit_frame */
1786 if (unlikely(tx_cleaned
&& netif_queue_stopped(nic
->netdev
)))
1787 netif_wake_queue(nic
->netdev
);
1792 static void e100_clean_cbs(struct nic
*nic
)
1795 while (nic
->cbs_avail
!= nic
->params
.cbs
.count
) {
1796 struct cb
*cb
= nic
->cb_to_clean
;
1798 pci_unmap_single(nic
->pdev
,
1799 le32_to_cpu(cb
->u
.tcb
.tbd
.buf_addr
),
1800 le16_to_cpu(cb
->u
.tcb
.tbd
.size
),
1802 dev_kfree_skb(cb
->skb
);
1804 nic
->cb_to_clean
= nic
->cb_to_clean
->next
;
1807 pci_free_consistent(nic
->pdev
,
1808 sizeof(struct cb
) * nic
->params
.cbs
.count
,
1809 nic
->cbs
, nic
->cbs_dma_addr
);
1813 nic
->cuc_cmd
= cuc_start
;
1814 nic
->cb_to_use
= nic
->cb_to_send
= nic
->cb_to_clean
=
1818 static int e100_alloc_cbs(struct nic
*nic
)
1821 unsigned int i
, count
= nic
->params
.cbs
.count
;
1823 nic
->cuc_cmd
= cuc_start
;
1824 nic
->cb_to_use
= nic
->cb_to_send
= nic
->cb_to_clean
= NULL
;
1827 nic
->cbs
= pci_alloc_consistent(nic
->pdev
,
1828 sizeof(struct cb
) * count
, &nic
->cbs_dma_addr
);
1832 for (cb
= nic
->cbs
, i
= 0; i
< count
; cb
++, i
++) {
1833 cb
->next
= (i
+ 1 < count
) ? cb
+ 1 : nic
->cbs
;
1834 cb
->prev
= (i
== 0) ? nic
->cbs
+ count
- 1 : cb
- 1;
1836 cb
->dma_addr
= nic
->cbs_dma_addr
+ i
* sizeof(struct cb
);
1837 cb
->link
= cpu_to_le32(nic
->cbs_dma_addr
+
1838 ((i
+1) % count
) * sizeof(struct cb
));
1842 nic
->cb_to_use
= nic
->cb_to_send
= nic
->cb_to_clean
= nic
->cbs
;
1843 nic
->cbs_avail
= count
;
1848 static inline void e100_start_receiver(struct nic
*nic
, struct rx
*rx
)
1850 if (!nic
->rxs
) return;
1851 if (RU_SUSPENDED
!= nic
->ru_running
) return;
1853 /* handle init time starts */
1854 if (!rx
) rx
= nic
->rxs
;
1856 /* (Re)start RU if suspended or idle and RFA is non-NULL */
1858 e100_exec_cmd(nic
, ruc_start
, rx
->dma_addr
);
1859 nic
->ru_running
= RU_RUNNING
;
1863 #define RFD_BUF_LEN (sizeof(struct rfd) + VLAN_ETH_FRAME_LEN)
1864 static int e100_rx_alloc_skb(struct nic
*nic
, struct rx
*rx
)
1866 if (!(rx
->skb
= netdev_alloc_skb_ip_align(nic
->netdev
, RFD_BUF_LEN
)))
1869 /* Init, and map the RFD. */
1870 skb_copy_to_linear_data(rx
->skb
, &nic
->blank_rfd
, sizeof(struct rfd
));
1871 rx
->dma_addr
= pci_map_single(nic
->pdev
, rx
->skb
->data
,
1872 RFD_BUF_LEN
, PCI_DMA_BIDIRECTIONAL
);
1874 if (pci_dma_mapping_error(nic
->pdev
, rx
->dma_addr
)) {
1875 dev_kfree_skb_any(rx
->skb
);
1881 /* Link the RFD to end of RFA by linking previous RFD to
1882 * this one. We are safe to touch the previous RFD because
1883 * it is protected by the before last buffer's el bit being set */
1884 if (rx
->prev
->skb
) {
1885 struct rfd
*prev_rfd
= (struct rfd
*)rx
->prev
->skb
->data
;
1886 put_unaligned_le32(rx
->dma_addr
, &prev_rfd
->link
);
1887 pci_dma_sync_single_for_device(nic
->pdev
, rx
->prev
->dma_addr
,
1888 sizeof(struct rfd
), PCI_DMA_BIDIRECTIONAL
);
1894 static int e100_rx_indicate(struct nic
*nic
, struct rx
*rx
,
1895 unsigned int *work_done
, unsigned int work_to_do
)
1897 struct net_device
*dev
= nic
->netdev
;
1898 struct sk_buff
*skb
= rx
->skb
;
1899 struct rfd
*rfd
= (struct rfd
*)skb
->data
;
1900 u16 rfd_status
, actual_size
;
1902 if (unlikely(work_done
&& *work_done
>= work_to_do
))
1905 /* Need to sync before taking a peek at cb_complete bit */
1906 pci_dma_sync_single_for_cpu(nic
->pdev
, rx
->dma_addr
,
1907 sizeof(struct rfd
), PCI_DMA_BIDIRECTIONAL
);
1908 rfd_status
= le16_to_cpu(rfd
->status
);
1910 DPRINTK(RX_STATUS
, DEBUG
, "status=0x%04X\n", rfd_status
);
1912 /* If data isn't ready, nothing to indicate */
1913 if (unlikely(!(rfd_status
& cb_complete
))) {
1914 /* If the next buffer has the el bit, but we think the receiver
1915 * is still running, check to see if it really stopped while
1916 * we had interrupts off.
1917 * This allows for a fast restart without re-enabling
1919 if ((le16_to_cpu(rfd
->command
) & cb_el
) &&
1920 (RU_RUNNING
== nic
->ru_running
))
1922 if (ioread8(&nic
->csr
->scb
.status
) & rus_no_res
)
1923 nic
->ru_running
= RU_SUSPENDED
;
1924 pci_dma_sync_single_for_device(nic
->pdev
, rx
->dma_addr
,
1926 PCI_DMA_FROMDEVICE
);
1930 /* Get actual data size */
1931 actual_size
= le16_to_cpu(rfd
->actual_size
) & 0x3FFF;
1932 if (unlikely(actual_size
> RFD_BUF_LEN
- sizeof(struct rfd
)))
1933 actual_size
= RFD_BUF_LEN
- sizeof(struct rfd
);
1936 pci_unmap_single(nic
->pdev
, rx
->dma_addr
,
1937 RFD_BUF_LEN
, PCI_DMA_BIDIRECTIONAL
);
1939 /* If this buffer has the el bit, but we think the receiver
1940 * is still running, check to see if it really stopped while
1941 * we had interrupts off.
1942 * This allows for a fast restart without re-enabling interrupts.
1943 * This can happen when the RU sees the size change but also sees
1944 * the el bit set. */
1945 if ((le16_to_cpu(rfd
->command
) & cb_el
) &&
1946 (RU_RUNNING
== nic
->ru_running
)) {
1948 if (ioread8(&nic
->csr
->scb
.status
) & rus_no_res
)
1949 nic
->ru_running
= RU_SUSPENDED
;
1952 /* Pull off the RFD and put the actual data (minus eth hdr) */
1953 skb_reserve(skb
, sizeof(struct rfd
));
1954 skb_put(skb
, actual_size
);
1955 skb
->protocol
= eth_type_trans(skb
, nic
->netdev
);
1957 if (unlikely(!(rfd_status
& cb_ok
))) {
1958 /* Don't indicate if hardware indicates errors */
1959 dev_kfree_skb_any(skb
);
1960 } else if (actual_size
> ETH_DATA_LEN
+ VLAN_ETH_HLEN
) {
1961 /* Don't indicate oversized frames */
1962 nic
->rx_over_length_errors
++;
1963 dev_kfree_skb_any(skb
);
1965 dev
->stats
.rx_packets
++;
1966 dev
->stats
.rx_bytes
+= actual_size
;
1967 netif_receive_skb(skb
);
1977 static void e100_rx_clean(struct nic
*nic
, unsigned int *work_done
,
1978 unsigned int work_to_do
)
1981 int restart_required
= 0, err
= 0;
1982 struct rx
*old_before_last_rx
, *new_before_last_rx
;
1983 struct rfd
*old_before_last_rfd
, *new_before_last_rfd
;
1985 /* Indicate newly arrived packets */
1986 for (rx
= nic
->rx_to_clean
; rx
->skb
; rx
= nic
->rx_to_clean
= rx
->next
) {
1987 err
= e100_rx_indicate(nic
, rx
, work_done
, work_to_do
);
1988 /* Hit quota or no more to clean */
1989 if (-EAGAIN
== err
|| -ENODATA
== err
)
1994 /* On EAGAIN, hit quota so have more work to do, restart once
1995 * cleanup is complete.
1996 * Else, are we already rnr? then pay attention!!! this ensures that
1997 * the state machine progression never allows a start with a
1998 * partially cleaned list, avoiding a race between hardware
1999 * and rx_to_clean when in NAPI mode */
2000 if (-EAGAIN
!= err
&& RU_SUSPENDED
== nic
->ru_running
)
2001 restart_required
= 1;
2003 old_before_last_rx
= nic
->rx_to_use
->prev
->prev
;
2004 old_before_last_rfd
= (struct rfd
*)old_before_last_rx
->skb
->data
;
2006 /* Alloc new skbs to refill list */
2007 for (rx
= nic
->rx_to_use
; !rx
->skb
; rx
= nic
->rx_to_use
= rx
->next
) {
2008 if (unlikely(e100_rx_alloc_skb(nic
, rx
)))
2009 break; /* Better luck next time (see watchdog) */
2012 new_before_last_rx
= nic
->rx_to_use
->prev
->prev
;
2013 if (new_before_last_rx
!= old_before_last_rx
) {
2014 /* Set the el-bit on the buffer that is before the last buffer.
2015 * This lets us update the next pointer on the last buffer
2016 * without worrying about hardware touching it.
2017 * We set the size to 0 to prevent hardware from touching this
2019 * When the hardware hits the before last buffer with el-bit
2020 * and size of 0, it will RNR interrupt, the RUS will go into
2021 * the No Resources state. It will not complete nor write to
2023 new_before_last_rfd
=
2024 (struct rfd
*)new_before_last_rx
->skb
->data
;
2025 new_before_last_rfd
->size
= 0;
2026 new_before_last_rfd
->command
|= cpu_to_le16(cb_el
);
2027 pci_dma_sync_single_for_device(nic
->pdev
,
2028 new_before_last_rx
->dma_addr
, sizeof(struct rfd
),
2029 PCI_DMA_BIDIRECTIONAL
);
2031 /* Now that we have a new stopping point, we can clear the old
2032 * stopping point. We must sync twice to get the proper
2033 * ordering on the hardware side of things. */
2034 old_before_last_rfd
->command
&= ~cpu_to_le16(cb_el
);
2035 pci_dma_sync_single_for_device(nic
->pdev
,
2036 old_before_last_rx
->dma_addr
, sizeof(struct rfd
),
2037 PCI_DMA_BIDIRECTIONAL
);
2038 old_before_last_rfd
->size
= cpu_to_le16(VLAN_ETH_FRAME_LEN
);
2039 pci_dma_sync_single_for_device(nic
->pdev
,
2040 old_before_last_rx
->dma_addr
, sizeof(struct rfd
),
2041 PCI_DMA_BIDIRECTIONAL
);
2044 if (restart_required
) {
2046 iowrite8(stat_ack_rnr
, &nic
->csr
->scb
.stat_ack
);
2047 e100_start_receiver(nic
, nic
->rx_to_clean
);
2053 static void e100_rx_clean_list(struct nic
*nic
)
2056 unsigned int i
, count
= nic
->params
.rfds
.count
;
2058 nic
->ru_running
= RU_UNINITIALIZED
;
2061 for (rx
= nic
->rxs
, i
= 0; i
< count
; rx
++, i
++) {
2063 pci_unmap_single(nic
->pdev
, rx
->dma_addr
,
2064 RFD_BUF_LEN
, PCI_DMA_BIDIRECTIONAL
);
2065 dev_kfree_skb(rx
->skb
);
2072 nic
->rx_to_use
= nic
->rx_to_clean
= NULL
;
2075 static int e100_rx_alloc_list(struct nic
*nic
)
2078 unsigned int i
, count
= nic
->params
.rfds
.count
;
2079 struct rfd
*before_last
;
2081 nic
->rx_to_use
= nic
->rx_to_clean
= NULL
;
2082 nic
->ru_running
= RU_UNINITIALIZED
;
2084 if (!(nic
->rxs
= kcalloc(count
, sizeof(struct rx
), GFP_ATOMIC
)))
2087 for (rx
= nic
->rxs
, i
= 0; i
< count
; rx
++, i
++) {
2088 rx
->next
= (i
+ 1 < count
) ? rx
+ 1 : nic
->rxs
;
2089 rx
->prev
= (i
== 0) ? nic
->rxs
+ count
- 1 : rx
- 1;
2090 if (e100_rx_alloc_skb(nic
, rx
)) {
2091 e100_rx_clean_list(nic
);
2095 /* Set the el-bit on the buffer that is before the last buffer.
2096 * This lets us update the next pointer on the last buffer without
2097 * worrying about hardware touching it.
2098 * We set the size to 0 to prevent hardware from touching this buffer.
2099 * When the hardware hits the before last buffer with el-bit and size
2100 * of 0, it will RNR interrupt, the RU will go into the No Resources
2101 * state. It will not complete nor write to this buffer. */
2102 rx
= nic
->rxs
->prev
->prev
;
2103 before_last
= (struct rfd
*)rx
->skb
->data
;
2104 before_last
->command
|= cpu_to_le16(cb_el
);
2105 before_last
->size
= 0;
2106 pci_dma_sync_single_for_device(nic
->pdev
, rx
->dma_addr
,
2107 sizeof(struct rfd
), PCI_DMA_BIDIRECTIONAL
);
2109 nic
->rx_to_use
= nic
->rx_to_clean
= nic
->rxs
;
2110 nic
->ru_running
= RU_SUSPENDED
;
2115 static irqreturn_t
e100_intr(int irq
, void *dev_id
)
2117 struct net_device
*netdev
= dev_id
;
2118 struct nic
*nic
= netdev_priv(netdev
);
2119 u8 stat_ack
= ioread8(&nic
->csr
->scb
.stat_ack
);
2121 DPRINTK(INTR
, DEBUG
, "stat_ack = 0x%02X\n", stat_ack
);
2123 if (stat_ack
== stat_ack_not_ours
|| /* Not our interrupt */
2124 stat_ack
== stat_ack_not_present
) /* Hardware is ejected */
2127 /* Ack interrupt(s) */
2128 iowrite8(stat_ack
, &nic
->csr
->scb
.stat_ack
);
2130 /* We hit Receive No Resource (RNR); restart RU after cleaning */
2131 if (stat_ack
& stat_ack_rnr
)
2132 nic
->ru_running
= RU_SUSPENDED
;
2134 if (likely(napi_schedule_prep(&nic
->napi
))) {
2135 e100_disable_irq(nic
);
2136 __napi_schedule(&nic
->napi
);
2142 static int e100_poll(struct napi_struct
*napi
, int budget
)
2144 struct nic
*nic
= container_of(napi
, struct nic
, napi
);
2145 unsigned int work_done
= 0;
2147 e100_rx_clean(nic
, &work_done
, budget
);
2150 /* If budget not fully consumed, exit the polling mode */
2151 if (work_done
< budget
) {
2152 napi_complete(napi
);
2153 e100_enable_irq(nic
);
2159 #ifdef CONFIG_NET_POLL_CONTROLLER
2160 static void e100_netpoll(struct net_device
*netdev
)
2162 struct nic
*nic
= netdev_priv(netdev
);
2164 e100_disable_irq(nic
);
2165 e100_intr(nic
->pdev
->irq
, netdev
);
2167 e100_enable_irq(nic
);
2171 static int e100_set_mac_address(struct net_device
*netdev
, void *p
)
2173 struct nic
*nic
= netdev_priv(netdev
);
2174 struct sockaddr
*addr
= p
;
2176 if (!is_valid_ether_addr(addr
->sa_data
))
2177 return -EADDRNOTAVAIL
;
2179 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2180 e100_exec_cb(nic
, NULL
, e100_setup_iaaddr
);
2185 static int e100_change_mtu(struct net_device
*netdev
, int new_mtu
)
2187 if (new_mtu
< ETH_ZLEN
|| new_mtu
> ETH_DATA_LEN
)
2189 netdev
->mtu
= new_mtu
;
2193 static int e100_asf(struct nic
*nic
)
2195 /* ASF can be enabled from eeprom */
2196 return((nic
->pdev
->device
>= 0x1050) && (nic
->pdev
->device
<= 0x1057) &&
2197 (nic
->eeprom
[eeprom_config_asf
] & eeprom_asf
) &&
2198 !(nic
->eeprom
[eeprom_config_asf
] & eeprom_gcl
) &&
2199 ((nic
->eeprom
[eeprom_smbus_addr
] & 0xFF) != 0xFE));
2202 static int e100_up(struct nic
*nic
)
2206 if ((err
= e100_rx_alloc_list(nic
)))
2208 if ((err
= e100_alloc_cbs(nic
)))
2209 goto err_rx_clean_list
;
2210 if ((err
= e100_hw_init(nic
)))
2212 e100_set_multicast_list(nic
->netdev
);
2213 e100_start_receiver(nic
, NULL
);
2214 mod_timer(&nic
->watchdog
, jiffies
);
2215 if ((err
= request_irq(nic
->pdev
->irq
, e100_intr
, IRQF_SHARED
,
2216 nic
->netdev
->name
, nic
->netdev
)))
2218 netif_wake_queue(nic
->netdev
);
2219 napi_enable(&nic
->napi
);
2220 /* enable ints _after_ enabling poll, preventing a race between
2221 * disable ints+schedule */
2222 e100_enable_irq(nic
);
2226 del_timer_sync(&nic
->watchdog
);
2228 e100_clean_cbs(nic
);
2230 e100_rx_clean_list(nic
);
2234 static void e100_down(struct nic
*nic
)
2236 /* wait here for poll to complete */
2237 napi_disable(&nic
->napi
);
2238 netif_stop_queue(nic
->netdev
);
2240 free_irq(nic
->pdev
->irq
, nic
->netdev
);
2241 del_timer_sync(&nic
->watchdog
);
2242 netif_carrier_off(nic
->netdev
);
2243 e100_clean_cbs(nic
);
2244 e100_rx_clean_list(nic
);
2247 static void e100_tx_timeout(struct net_device
*netdev
)
2249 struct nic
*nic
= netdev_priv(netdev
);
2251 /* Reset outside of interrupt context, to avoid request_irq
2252 * in interrupt context */
2253 schedule_work(&nic
->tx_timeout_task
);
2256 static void e100_tx_timeout_task(struct work_struct
*work
)
2258 struct nic
*nic
= container_of(work
, struct nic
, tx_timeout_task
);
2259 struct net_device
*netdev
= nic
->netdev
;
2261 DPRINTK(TX_ERR
, DEBUG
, "scb.status=0x%02X\n",
2262 ioread8(&nic
->csr
->scb
.status
));
2263 e100_down(netdev_priv(netdev
));
2264 e100_up(netdev_priv(netdev
));
2267 static int e100_loopback_test(struct nic
*nic
, enum loopback loopback_mode
)
2270 struct sk_buff
*skb
;
2272 /* Use driver resources to perform internal MAC or PHY
2273 * loopback test. A single packet is prepared and transmitted
2274 * in loopback mode, and the test passes if the received
2275 * packet compares byte-for-byte to the transmitted packet. */
2277 if ((err
= e100_rx_alloc_list(nic
)))
2279 if ((err
= e100_alloc_cbs(nic
)))
2282 /* ICH PHY loopback is broken so do MAC loopback instead */
2283 if (nic
->flags
& ich
&& loopback_mode
== lb_phy
)
2284 loopback_mode
= lb_mac
;
2286 nic
->loopback
= loopback_mode
;
2287 if ((err
= e100_hw_init(nic
)))
2288 goto err_loopback_none
;
2290 if (loopback_mode
== lb_phy
)
2291 mdio_write(nic
->netdev
, nic
->mii
.phy_id
, MII_BMCR
,
2294 e100_start_receiver(nic
, NULL
);
2296 if (!(skb
= netdev_alloc_skb(nic
->netdev
, ETH_DATA_LEN
))) {
2298 goto err_loopback_none
;
2300 skb_put(skb
, ETH_DATA_LEN
);
2301 memset(skb
->data
, 0xFF, ETH_DATA_LEN
);
2302 e100_xmit_frame(skb
, nic
->netdev
);
2306 pci_dma_sync_single_for_cpu(nic
->pdev
, nic
->rx_to_clean
->dma_addr
,
2307 RFD_BUF_LEN
, PCI_DMA_BIDIRECTIONAL
);
2309 if (memcmp(nic
->rx_to_clean
->skb
->data
+ sizeof(struct rfd
),
2310 skb
->data
, ETH_DATA_LEN
))
2314 mdio_write(nic
->netdev
, nic
->mii
.phy_id
, MII_BMCR
, 0);
2315 nic
->loopback
= lb_none
;
2316 e100_clean_cbs(nic
);
2319 e100_rx_clean_list(nic
);
2323 #define MII_LED_CONTROL 0x1B
2324 #define E100_82552_LED_OVERRIDE 0x19
2325 #define E100_82552_LED_ON 0x000F /* LEDTX and LED_RX both on */
2326 #define E100_82552_LED_OFF 0x000A /* LEDTX and LED_RX both off */
2327 static void e100_blink_led(unsigned long data
)
2329 struct nic
*nic
= (struct nic
*)data
;
2336 u16 led_reg
= MII_LED_CONTROL
;
2338 if (nic
->phy
== phy_82552_v
) {
2339 led_reg
= E100_82552_LED_OVERRIDE
;
2341 nic
->leds
= (nic
->leds
== E100_82552_LED_ON
) ?
2342 E100_82552_LED_OFF
: E100_82552_LED_ON
;
2344 nic
->leds
= (nic
->leds
& led_on
) ? led_off
:
2345 (nic
->mac
< mac_82559_D101M
) ? led_on_557
:
2348 mdio_write(nic
->netdev
, nic
->mii
.phy_id
, led_reg
, nic
->leds
);
2349 mod_timer(&nic
->blink_timer
, jiffies
+ HZ
/ 4);
2352 static int e100_get_settings(struct net_device
*netdev
, struct ethtool_cmd
*cmd
)
2354 struct nic
*nic
= netdev_priv(netdev
);
2355 return mii_ethtool_gset(&nic
->mii
, cmd
);
2358 static int e100_set_settings(struct net_device
*netdev
, struct ethtool_cmd
*cmd
)
2360 struct nic
*nic
= netdev_priv(netdev
);
2363 mdio_write(netdev
, nic
->mii
.phy_id
, MII_BMCR
, BMCR_RESET
);
2364 err
= mii_ethtool_sset(&nic
->mii
, cmd
);
2365 e100_exec_cb(nic
, NULL
, e100_configure
);
2370 static void e100_get_drvinfo(struct net_device
*netdev
,
2371 struct ethtool_drvinfo
*info
)
2373 struct nic
*nic
= netdev_priv(netdev
);
2374 strcpy(info
->driver
, DRV_NAME
);
2375 strcpy(info
->version
, DRV_VERSION
);
2376 strcpy(info
->fw_version
, "N/A");
2377 strcpy(info
->bus_info
, pci_name(nic
->pdev
));
2380 #define E100_PHY_REGS 0x1C
2381 static int e100_get_regs_len(struct net_device
*netdev
)
2383 struct nic
*nic
= netdev_priv(netdev
);
2384 return 1 + E100_PHY_REGS
+ sizeof(nic
->mem
->dump_buf
);
2387 static void e100_get_regs(struct net_device
*netdev
,
2388 struct ethtool_regs
*regs
, void *p
)
2390 struct nic
*nic
= netdev_priv(netdev
);
2394 regs
->version
= (1 << 24) | nic
->pdev
->revision
;
2395 buff
[0] = ioread8(&nic
->csr
->scb
.cmd_hi
) << 24 |
2396 ioread8(&nic
->csr
->scb
.cmd_lo
) << 16 |
2397 ioread16(&nic
->csr
->scb
.status
);
2398 for (i
= E100_PHY_REGS
; i
>= 0; i
--)
2399 buff
[1 + E100_PHY_REGS
- i
] =
2400 mdio_read(netdev
, nic
->mii
.phy_id
, i
);
2401 memset(nic
->mem
->dump_buf
, 0, sizeof(nic
->mem
->dump_buf
));
2402 e100_exec_cb(nic
, NULL
, e100_dump
);
2404 memcpy(&buff
[2 + E100_PHY_REGS
], nic
->mem
->dump_buf
,
2405 sizeof(nic
->mem
->dump_buf
));
2408 static void e100_get_wol(struct net_device
*netdev
, struct ethtool_wolinfo
*wol
)
2410 struct nic
*nic
= netdev_priv(netdev
);
2411 wol
->supported
= (nic
->mac
>= mac_82558_D101_A4
) ? WAKE_MAGIC
: 0;
2412 wol
->wolopts
= (nic
->flags
& wol_magic
) ? WAKE_MAGIC
: 0;
2415 static int e100_set_wol(struct net_device
*netdev
, struct ethtool_wolinfo
*wol
)
2417 struct nic
*nic
= netdev_priv(netdev
);
2419 if ((wol
->wolopts
&& wol
->wolopts
!= WAKE_MAGIC
) ||
2420 !device_can_wakeup(&nic
->pdev
->dev
))
2424 nic
->flags
|= wol_magic
;
2426 nic
->flags
&= ~wol_magic
;
2428 device_set_wakeup_enable(&nic
->pdev
->dev
, wol
->wolopts
);
2430 e100_exec_cb(nic
, NULL
, e100_configure
);
2435 static u32
e100_get_msglevel(struct net_device
*netdev
)
2437 struct nic
*nic
= netdev_priv(netdev
);
2438 return nic
->msg_enable
;
2441 static void e100_set_msglevel(struct net_device
*netdev
, u32 value
)
2443 struct nic
*nic
= netdev_priv(netdev
);
2444 nic
->msg_enable
= value
;
2447 static int e100_nway_reset(struct net_device
*netdev
)
2449 struct nic
*nic
= netdev_priv(netdev
);
2450 return mii_nway_restart(&nic
->mii
);
2453 static u32
e100_get_link(struct net_device
*netdev
)
2455 struct nic
*nic
= netdev_priv(netdev
);
2456 return mii_link_ok(&nic
->mii
);
2459 static int e100_get_eeprom_len(struct net_device
*netdev
)
2461 struct nic
*nic
= netdev_priv(netdev
);
2462 return nic
->eeprom_wc
<< 1;
2465 #define E100_EEPROM_MAGIC 0x1234
2466 static int e100_get_eeprom(struct net_device
*netdev
,
2467 struct ethtool_eeprom
*eeprom
, u8
*bytes
)
2469 struct nic
*nic
= netdev_priv(netdev
);
2471 eeprom
->magic
= E100_EEPROM_MAGIC
;
2472 memcpy(bytes
, &((u8
*)nic
->eeprom
)[eeprom
->offset
], eeprom
->len
);
2477 static int e100_set_eeprom(struct net_device
*netdev
,
2478 struct ethtool_eeprom
*eeprom
, u8
*bytes
)
2480 struct nic
*nic
= netdev_priv(netdev
);
2482 if (eeprom
->magic
!= E100_EEPROM_MAGIC
)
2485 memcpy(&((u8
*)nic
->eeprom
)[eeprom
->offset
], bytes
, eeprom
->len
);
2487 return e100_eeprom_save(nic
, eeprom
->offset
>> 1,
2488 (eeprom
->len
>> 1) + 1);
2491 static void e100_get_ringparam(struct net_device
*netdev
,
2492 struct ethtool_ringparam
*ring
)
2494 struct nic
*nic
= netdev_priv(netdev
);
2495 struct param_range
*rfds
= &nic
->params
.rfds
;
2496 struct param_range
*cbs
= &nic
->params
.cbs
;
2498 ring
->rx_max_pending
= rfds
->max
;
2499 ring
->tx_max_pending
= cbs
->max
;
2500 ring
->rx_mini_max_pending
= 0;
2501 ring
->rx_jumbo_max_pending
= 0;
2502 ring
->rx_pending
= rfds
->count
;
2503 ring
->tx_pending
= cbs
->count
;
2504 ring
->rx_mini_pending
= 0;
2505 ring
->rx_jumbo_pending
= 0;
2508 static int e100_set_ringparam(struct net_device
*netdev
,
2509 struct ethtool_ringparam
*ring
)
2511 struct nic
*nic
= netdev_priv(netdev
);
2512 struct param_range
*rfds
= &nic
->params
.rfds
;
2513 struct param_range
*cbs
= &nic
->params
.cbs
;
2515 if ((ring
->rx_mini_pending
) || (ring
->rx_jumbo_pending
))
2518 if (netif_running(netdev
))
2520 rfds
->count
= max(ring
->rx_pending
, rfds
->min
);
2521 rfds
->count
= min(rfds
->count
, rfds
->max
);
2522 cbs
->count
= max(ring
->tx_pending
, cbs
->min
);
2523 cbs
->count
= min(cbs
->count
, cbs
->max
);
2524 DPRINTK(DRV
, INFO
, "Ring Param settings: rx: %d, tx %d\n",
2525 rfds
->count
, cbs
->count
);
2526 if (netif_running(netdev
))
2532 static const char e100_gstrings_test
[][ETH_GSTRING_LEN
] = {
2533 "Link test (on/offline)",
2534 "Eeprom test (on/offline)",
2535 "Self test (offline)",
2536 "Mac loopback (offline)",
2537 "Phy loopback (offline)",
2539 #define E100_TEST_LEN ARRAY_SIZE(e100_gstrings_test)
2541 static void e100_diag_test(struct net_device
*netdev
,
2542 struct ethtool_test
*test
, u64
*data
)
2544 struct ethtool_cmd cmd
;
2545 struct nic
*nic
= netdev_priv(netdev
);
2548 memset(data
, 0, E100_TEST_LEN
* sizeof(u64
));
2549 data
[0] = !mii_link_ok(&nic
->mii
);
2550 data
[1] = e100_eeprom_load(nic
);
2551 if (test
->flags
& ETH_TEST_FL_OFFLINE
) {
2553 /* save speed, duplex & autoneg settings */
2554 err
= mii_ethtool_gset(&nic
->mii
, &cmd
);
2556 if (netif_running(netdev
))
2558 data
[2] = e100_self_test(nic
);
2559 data
[3] = e100_loopback_test(nic
, lb_mac
);
2560 data
[4] = e100_loopback_test(nic
, lb_phy
);
2562 /* restore speed, duplex & autoneg settings */
2563 err
= mii_ethtool_sset(&nic
->mii
, &cmd
);
2565 if (netif_running(netdev
))
2568 for (i
= 0; i
< E100_TEST_LEN
; i
++)
2569 test
->flags
|= data
[i
] ? ETH_TEST_FL_FAILED
: 0;
2571 msleep_interruptible(4 * 1000);
2574 static int e100_phys_id(struct net_device
*netdev
, u32 data
)
2576 struct nic
*nic
= netdev_priv(netdev
);
2577 u16 led_reg
= (nic
->phy
== phy_82552_v
) ? E100_82552_LED_OVERRIDE
:
2580 if (!data
|| data
> (u32
)(MAX_SCHEDULE_TIMEOUT
/ HZ
))
2581 data
= (u32
)(MAX_SCHEDULE_TIMEOUT
/ HZ
);
2582 mod_timer(&nic
->blink_timer
, jiffies
);
2583 msleep_interruptible(data
* 1000);
2584 del_timer_sync(&nic
->blink_timer
);
2585 mdio_write(netdev
, nic
->mii
.phy_id
, led_reg
, 0);
2590 static const char e100_gstrings_stats
[][ETH_GSTRING_LEN
] = {
2591 "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
2592 "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
2593 "rx_length_errors", "rx_over_errors", "rx_crc_errors",
2594 "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
2595 "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
2596 "tx_heartbeat_errors", "tx_window_errors",
2597 /* device-specific stats */
2598 "tx_deferred", "tx_single_collisions", "tx_multi_collisions",
2599 "tx_flow_control_pause", "rx_flow_control_pause",
2600 "rx_flow_control_unsupported", "tx_tco_packets", "rx_tco_packets",
2602 #define E100_NET_STATS_LEN 21
2603 #define E100_STATS_LEN ARRAY_SIZE(e100_gstrings_stats)
2605 static int e100_get_sset_count(struct net_device
*netdev
, int sset
)
2609 return E100_TEST_LEN
;
2611 return E100_STATS_LEN
;
2617 static void e100_get_ethtool_stats(struct net_device
*netdev
,
2618 struct ethtool_stats
*stats
, u64
*data
)
2620 struct nic
*nic
= netdev_priv(netdev
);
2623 for (i
= 0; i
< E100_NET_STATS_LEN
; i
++)
2624 data
[i
] = ((unsigned long *)&netdev
->stats
)[i
];
2626 data
[i
++] = nic
->tx_deferred
;
2627 data
[i
++] = nic
->tx_single_collisions
;
2628 data
[i
++] = nic
->tx_multiple_collisions
;
2629 data
[i
++] = nic
->tx_fc_pause
;
2630 data
[i
++] = nic
->rx_fc_pause
;
2631 data
[i
++] = nic
->rx_fc_unsupported
;
2632 data
[i
++] = nic
->tx_tco_frames
;
2633 data
[i
++] = nic
->rx_tco_frames
;
2636 static void e100_get_strings(struct net_device
*netdev
, u32 stringset
, u8
*data
)
2638 switch (stringset
) {
2640 memcpy(data
, *e100_gstrings_test
, sizeof(e100_gstrings_test
));
2643 memcpy(data
, *e100_gstrings_stats
, sizeof(e100_gstrings_stats
));
2648 static const struct ethtool_ops e100_ethtool_ops
= {
2649 .get_settings
= e100_get_settings
,
2650 .set_settings
= e100_set_settings
,
2651 .get_drvinfo
= e100_get_drvinfo
,
2652 .get_regs_len
= e100_get_regs_len
,
2653 .get_regs
= e100_get_regs
,
2654 .get_wol
= e100_get_wol
,
2655 .set_wol
= e100_set_wol
,
2656 .get_msglevel
= e100_get_msglevel
,
2657 .set_msglevel
= e100_set_msglevel
,
2658 .nway_reset
= e100_nway_reset
,
2659 .get_link
= e100_get_link
,
2660 .get_eeprom_len
= e100_get_eeprom_len
,
2661 .get_eeprom
= e100_get_eeprom
,
2662 .set_eeprom
= e100_set_eeprom
,
2663 .get_ringparam
= e100_get_ringparam
,
2664 .set_ringparam
= e100_set_ringparam
,
2665 .self_test
= e100_diag_test
,
2666 .get_strings
= e100_get_strings
,
2667 .phys_id
= e100_phys_id
,
2668 .get_ethtool_stats
= e100_get_ethtool_stats
,
2669 .get_sset_count
= e100_get_sset_count
,
2672 static int e100_do_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
2674 struct nic
*nic
= netdev_priv(netdev
);
2676 return generic_mii_ioctl(&nic
->mii
, if_mii(ifr
), cmd
, NULL
);
2679 static int e100_alloc(struct nic
*nic
)
2681 nic
->mem
= pci_alloc_consistent(nic
->pdev
, sizeof(struct mem
),
2683 return nic
->mem
? 0 : -ENOMEM
;
2686 static void e100_free(struct nic
*nic
)
2689 pci_free_consistent(nic
->pdev
, sizeof(struct mem
),
2690 nic
->mem
, nic
->dma_addr
);
2695 static int e100_open(struct net_device
*netdev
)
2697 struct nic
*nic
= netdev_priv(netdev
);
2700 netif_carrier_off(netdev
);
2701 if ((err
= e100_up(nic
)))
2702 DPRINTK(IFUP
, ERR
, "Cannot open interface, aborting.\n");
2706 static int e100_close(struct net_device
*netdev
)
2708 e100_down(netdev_priv(netdev
));
2712 static const struct net_device_ops e100_netdev_ops
= {
2713 .ndo_open
= e100_open
,
2714 .ndo_stop
= e100_close
,
2715 .ndo_start_xmit
= e100_xmit_frame
,
2716 .ndo_validate_addr
= eth_validate_addr
,
2717 .ndo_set_multicast_list
= e100_set_multicast_list
,
2718 .ndo_set_mac_address
= e100_set_mac_address
,
2719 .ndo_change_mtu
= e100_change_mtu
,
2720 .ndo_do_ioctl
= e100_do_ioctl
,
2721 .ndo_tx_timeout
= e100_tx_timeout
,
2722 #ifdef CONFIG_NET_POLL_CONTROLLER
2723 .ndo_poll_controller
= e100_netpoll
,
2727 static int __devinit
e100_probe(struct pci_dev
*pdev
,
2728 const struct pci_device_id
*ent
)
2730 struct net_device
*netdev
;
2734 if (!(netdev
= alloc_etherdev(sizeof(struct nic
)))) {
2735 if (((1 << debug
) - 1) & NETIF_MSG_PROBE
)
2736 printk(KERN_ERR PFX
"Etherdev alloc failed, abort.\n");
2740 netdev
->netdev_ops
= &e100_netdev_ops
;
2741 SET_ETHTOOL_OPS(netdev
, &e100_ethtool_ops
);
2742 netdev
->watchdog_timeo
= E100_WATCHDOG_PERIOD
;
2743 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
2745 nic
= netdev_priv(netdev
);
2746 netif_napi_add(netdev
, &nic
->napi
, e100_poll
, E100_NAPI_WEIGHT
);
2747 nic
->netdev
= netdev
;
2749 nic
->msg_enable
= (1 << debug
) - 1;
2750 nic
->mdio_ctrl
= mdio_ctrl_hw
;
2751 pci_set_drvdata(pdev
, netdev
);
2753 if ((err
= pci_enable_device(pdev
))) {
2754 DPRINTK(PROBE
, ERR
, "Cannot enable PCI device, aborting.\n");
2755 goto err_out_free_dev
;
2758 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
)) {
2759 DPRINTK(PROBE
, ERR
, "Cannot find proper PCI device "
2760 "base address, aborting.\n");
2762 goto err_out_disable_pdev
;
2765 if ((err
= pci_request_regions(pdev
, DRV_NAME
))) {
2766 DPRINTK(PROBE
, ERR
, "Cannot obtain PCI resources, aborting.\n");
2767 goto err_out_disable_pdev
;
2770 if ((err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)))) {
2771 DPRINTK(PROBE
, ERR
, "No usable DMA configuration, aborting.\n");
2772 goto err_out_free_res
;
2775 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2778 DPRINTK(PROBE
, INFO
, "using i/o access mode\n");
2780 nic
->csr
= pci_iomap(pdev
, (use_io
? 1 : 0), sizeof(struct csr
));
2782 DPRINTK(PROBE
, ERR
, "Cannot map device registers, aborting.\n");
2784 goto err_out_free_res
;
2787 if (ent
->driver_data
)
2792 e100_get_defaults(nic
);
2794 /* locks must be initialized before calling hw_reset */
2795 spin_lock_init(&nic
->cb_lock
);
2796 spin_lock_init(&nic
->cmd_lock
);
2797 spin_lock_init(&nic
->mdio_lock
);
2799 /* Reset the device before pci_set_master() in case device is in some
2800 * funky state and has an interrupt pending - hint: we don't have the
2801 * interrupt handler registered yet. */
2804 pci_set_master(pdev
);
2806 init_timer(&nic
->watchdog
);
2807 nic
->watchdog
.function
= e100_watchdog
;
2808 nic
->watchdog
.data
= (unsigned long)nic
;
2809 init_timer(&nic
->blink_timer
);
2810 nic
->blink_timer
.function
= e100_blink_led
;
2811 nic
->blink_timer
.data
= (unsigned long)nic
;
2813 INIT_WORK(&nic
->tx_timeout_task
, e100_tx_timeout_task
);
2815 if ((err
= e100_alloc(nic
))) {
2816 DPRINTK(PROBE
, ERR
, "Cannot alloc driver memory, aborting.\n");
2817 goto err_out_iounmap
;
2820 if ((err
= e100_eeprom_load(nic
)))
2825 memcpy(netdev
->dev_addr
, nic
->eeprom
, ETH_ALEN
);
2826 memcpy(netdev
->perm_addr
, nic
->eeprom
, ETH_ALEN
);
2827 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
2828 if (!eeprom_bad_csum_allow
) {
2829 DPRINTK(PROBE
, ERR
, "Invalid MAC address from "
2830 "EEPROM, aborting.\n");
2834 DPRINTK(PROBE
, ERR
, "Invalid MAC address from EEPROM, "
2835 "you MUST configure one.\n");
2839 /* Wol magic packet can be enabled from eeprom */
2840 if ((nic
->mac
>= mac_82558_D101_A4
) &&
2841 (nic
->eeprom
[eeprom_id
] & eeprom_id_wol
)) {
2842 nic
->flags
|= wol_magic
;
2843 device_set_wakeup_enable(&pdev
->dev
, true);
2846 /* ack any pending wake events, disable PME */
2847 pci_pme_active(pdev
, false);
2849 strcpy(netdev
->name
, "eth%d");
2850 if ((err
= register_netdev(netdev
))) {
2851 DPRINTK(PROBE
, ERR
, "Cannot register net device, aborting.\n");
2855 DPRINTK(PROBE
, INFO
, "addr 0x%llx, irq %d, MAC addr %pM\n",
2856 (unsigned long long)pci_resource_start(pdev
, use_io
? 1 : 0),
2857 pdev
->irq
, netdev
->dev_addr
);
2864 pci_iounmap(pdev
, nic
->csr
);
2866 pci_release_regions(pdev
);
2867 err_out_disable_pdev
:
2868 pci_disable_device(pdev
);
2870 pci_set_drvdata(pdev
, NULL
);
2871 free_netdev(netdev
);
2875 static void __devexit
e100_remove(struct pci_dev
*pdev
)
2877 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2880 struct nic
*nic
= netdev_priv(netdev
);
2881 unregister_netdev(netdev
);
2883 pci_iounmap(pdev
, nic
->csr
);
2884 free_netdev(netdev
);
2885 pci_release_regions(pdev
);
2886 pci_disable_device(pdev
);
2887 pci_set_drvdata(pdev
, NULL
);
2891 #define E100_82552_SMARTSPEED 0x14 /* SmartSpeed Ctrl register */
2892 #define E100_82552_REV_ANEG 0x0200 /* Reverse auto-negotiation */
2893 #define E100_82552_ANEG_NOW 0x0400 /* Auto-negotiate now */
2894 static void __e100_shutdown(struct pci_dev
*pdev
, bool *enable_wake
)
2896 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2897 struct nic
*nic
= netdev_priv(netdev
);
2899 if (netif_running(netdev
))
2901 netif_device_detach(netdev
);
2903 pci_save_state(pdev
);
2905 if ((nic
->flags
& wol_magic
) | e100_asf(nic
)) {
2906 /* enable reverse auto-negotiation */
2907 if (nic
->phy
== phy_82552_v
) {
2908 u16 smartspeed
= mdio_read(netdev
, nic
->mii
.phy_id
,
2909 E100_82552_SMARTSPEED
);
2911 mdio_write(netdev
, nic
->mii
.phy_id
,
2912 E100_82552_SMARTSPEED
, smartspeed
|
2913 E100_82552_REV_ANEG
| E100_82552_ANEG_NOW
);
2915 *enable_wake
= true;
2917 *enable_wake
= false;
2920 pci_disable_device(pdev
);
2923 static int __e100_power_off(struct pci_dev
*pdev
, bool wake
)
2926 return pci_prepare_to_sleep(pdev
);
2928 pci_wake_from_d3(pdev
, false);
2929 pci_set_power_state(pdev
, PCI_D3hot
);
2935 static int e100_suspend(struct pci_dev
*pdev
, pm_message_t state
)
2938 __e100_shutdown(pdev
, &wake
);
2939 return __e100_power_off(pdev
, wake
);
2942 static int e100_resume(struct pci_dev
*pdev
)
2944 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2945 struct nic
*nic
= netdev_priv(netdev
);
2947 pci_set_power_state(pdev
, PCI_D0
);
2948 pci_restore_state(pdev
);
2949 /* ack any pending wake events, disable PME */
2950 pci_enable_wake(pdev
, 0, 0);
2952 /* disable reverse auto-negotiation */
2953 if (nic
->phy
== phy_82552_v
) {
2954 u16 smartspeed
= mdio_read(netdev
, nic
->mii
.phy_id
,
2955 E100_82552_SMARTSPEED
);
2957 mdio_write(netdev
, nic
->mii
.phy_id
,
2958 E100_82552_SMARTSPEED
,
2959 smartspeed
& ~(E100_82552_REV_ANEG
));
2962 netif_device_attach(netdev
);
2963 if (netif_running(netdev
))
2968 #endif /* CONFIG_PM */
2970 static void e100_shutdown(struct pci_dev
*pdev
)
2973 __e100_shutdown(pdev
, &wake
);
2974 if (system_state
== SYSTEM_POWER_OFF
)
2975 __e100_power_off(pdev
, wake
);
2978 /* ------------------ PCI Error Recovery infrastructure -------------- */
2980 * e100_io_error_detected - called when PCI error is detected.
2981 * @pdev: Pointer to PCI device
2982 * @state: The current pci connection state
2984 static pci_ers_result_t
e100_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
2986 struct net_device
*netdev
= pci_get_drvdata(pdev
);
2987 struct nic
*nic
= netdev_priv(netdev
);
2989 netif_device_detach(netdev
);
2991 if (state
== pci_channel_io_perm_failure
)
2992 return PCI_ERS_RESULT_DISCONNECT
;
2994 if (netif_running(netdev
))
2996 pci_disable_device(pdev
);
2998 /* Request a slot reset. */
2999 return PCI_ERS_RESULT_NEED_RESET
;
3003 * e100_io_slot_reset - called after the pci bus has been reset.
3004 * @pdev: Pointer to PCI device
3006 * Restart the card from scratch.
3008 static pci_ers_result_t
e100_io_slot_reset(struct pci_dev
*pdev
)
3010 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3011 struct nic
*nic
= netdev_priv(netdev
);
3013 if (pci_enable_device(pdev
)) {
3014 printk(KERN_ERR
"e100: Cannot re-enable PCI device after reset.\n");
3015 return PCI_ERS_RESULT_DISCONNECT
;
3017 pci_set_master(pdev
);
3019 /* Only one device per card can do a reset */
3020 if (0 != PCI_FUNC(pdev
->devfn
))
3021 return PCI_ERS_RESULT_RECOVERED
;
3025 return PCI_ERS_RESULT_RECOVERED
;
3029 * e100_io_resume - resume normal operations
3030 * @pdev: Pointer to PCI device
3032 * Resume normal operations after an error recovery
3033 * sequence has been completed.
3035 static void e100_io_resume(struct pci_dev
*pdev
)
3037 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3038 struct nic
*nic
= netdev_priv(netdev
);
3040 /* ack any pending wake events, disable PME */
3041 pci_enable_wake(pdev
, 0, 0);
3043 netif_device_attach(netdev
);
3044 if (netif_running(netdev
)) {
3046 mod_timer(&nic
->watchdog
, jiffies
);
3050 static struct pci_error_handlers e100_err_handler
= {
3051 .error_detected
= e100_io_error_detected
,
3052 .slot_reset
= e100_io_slot_reset
,
3053 .resume
= e100_io_resume
,
3056 static struct pci_driver e100_driver
= {
3058 .id_table
= e100_id_table
,
3059 .probe
= e100_probe
,
3060 .remove
= __devexit_p(e100_remove
),
3062 /* Power Management hooks */
3063 .suspend
= e100_suspend
,
3064 .resume
= e100_resume
,
3066 .shutdown
= e100_shutdown
,
3067 .err_handler
= &e100_err_handler
,
3070 static int __init
e100_init_module(void)
3072 if (((1 << debug
) - 1) & NETIF_MSG_DRV
) {
3073 printk(KERN_INFO PFX
"%s, %s\n", DRV_DESCRIPTION
, DRV_VERSION
);
3074 printk(KERN_INFO PFX
"%s\n", DRV_COPYRIGHT
);
3076 return pci_register_driver(&e100_driver
);
3079 static void __exit
e100_cleanup_module(void)
3081 pci_unregister_driver(&e100_driver
);
3084 module_init(e100_init_module
);
3085 module_exit(e100_cleanup_module
);