1 /************************************************************************
2 * s2io.c: A Linux PCI-X Ethernet driver for S2IO 10GbE Server NIC
3 * Copyright(c) 2002-2005 Neterion Inc.
5 * This software may be used and distributed according to the terms of
6 * the GNU General Public License (GPL), incorporated herein by reference.
7 * Drivers based on or derived from this code fall under the GPL and must
8 * retain the authorship, copyright and license notice. This file is not
9 * a complete program and may only be used when the entire operating
10 * system is licensed under the GPL.
11 * See the file COPYING in this distribution for more information.
14 * Jeff Garzik : For pointing out the improper error condition
15 * check in the s2io_xmit routine and also some
16 * issues in the Tx watch dog function. Also for
17 * patiently answering all those innumerable
18 * questions regaring the 2.6 porting issues.
19 * Stephen Hemminger : Providing proper 2.6 porting mechanism for some
20 * macros available only in 2.6 Kernel.
21 * Francois Romieu : For pointing out all code part that were
22 * deprecated and also styling related comments.
23 * Grant Grundler : For helping me get rid of some Architecture
25 * Christopher Hellwig : Some more 2.6 specific issues in the driver.
27 * The module loadable parameters that are supported by the driver and a brief
28 * explaination of all the variables.
29 * rx_ring_num : This can be used to program the number of receive rings used
31 * rx_ring_len: This defines the number of descriptors each ring can have. This
32 * is also an array of size 8.
33 * tx_fifo_num: This defines the number of Tx FIFOs thats used int the driver.
34 * tx_fifo_len: This too is an array of 8. Each element defines the number of
35 * Tx descriptors that can be associated with each corresponding FIFO.
36 ************************************************************************/
38 #include <linux/config.h>
39 #include <linux/module.h>
40 #include <linux/types.h>
41 #include <linux/errno.h>
42 #include <linux/ioport.h>
43 #include <linux/pci.h>
44 #include <linux/dma-mapping.h>
45 #include <linux/kernel.h>
46 #include <linux/netdevice.h>
47 #include <linux/etherdevice.h>
48 #include <linux/skbuff.h>
49 #include <linux/init.h>
50 #include <linux/delay.h>
51 #include <linux/stddef.h>
52 #include <linux/ioctl.h>
53 #include <linux/timex.h>
54 #include <linux/sched.h>
55 #include <linux/ethtool.h>
56 #include <linux/version.h>
57 #include <linux/workqueue.h>
58 #include <linux/if_vlan.h>
60 #include <asm/system.h>
61 #include <asm/uaccess.h>
66 #include "s2io-regs.h"
68 /* S2io Driver name & version. */
69 static char s2io_driver_name
[] = "Neterion";
70 static char s2io_driver_version
[] = "Version 2.0.3.1";
72 static inline int RXD_IS_UP2DT(RxD_t
*rxdp
)
76 ret
= ((!(rxdp
->Control_1
& RXD_OWN_XENA
)) &&
77 (GET_RXD_MARKER(rxdp
->Control_2
) != THE_RXD_MARK
));
83 * Cards with following subsystem_id have a link state indication
84 * problem, 600B, 600C, 600D, 640B, 640C and 640D.
85 * macro below identifies these cards given the subsystem_id.
87 #define CARDS_WITH_FAULTY_LINK_INDICATORS(dev_type, subid) \
88 (dev_type == XFRAME_I_DEVICE) ? \
89 ((((subid >= 0x600B) && (subid <= 0x600D)) || \
90 ((subid >= 0x640B) && (subid <= 0x640D))) ? 1 : 0) : 0
92 #define LINK_IS_UP(val64) (!(val64 & (ADAPTER_STATUS_RMAC_REMOTE_FAULT | \
93 ADAPTER_STATUS_RMAC_LOCAL_FAULT)))
94 #define TASKLET_IN_USE test_and_set_bit(0, (&sp->tasklet_status))
97 static inline int rx_buffer_level(nic_t
* sp
, int rxb_size
, int ring
)
100 mac_info_t
*mac_control
;
102 mac_control
= &sp
->mac_control
;
103 if ((mac_control
->rings
[ring
].pkt_cnt
- rxb_size
) > 16) {
105 if (rxb_size
<= MAX_RXDS_PER_BLOCK
) {
113 /* Ethtool related variables and Macros. */
114 static char s2io_gstrings
[][ETH_GSTRING_LEN
] = {
115 "Register test\t(offline)",
116 "Eeprom test\t(offline)",
117 "Link test\t(online)",
118 "RLDRAM test\t(offline)",
119 "BIST Test\t(offline)"
122 static char ethtool_stats_keys
[][ETH_GSTRING_LEN
] = {
124 {"tmac_data_octets"},
128 {"tmac_pause_ctrl_frms"},
129 {"tmac_any_err_frms"},
130 {"tmac_vld_ip_octets"},
138 {"rmac_data_octets"},
139 {"rmac_fcs_err_frms"},
141 {"rmac_vld_mcst_frms"},
142 {"rmac_vld_bcst_frms"},
143 {"rmac_in_rng_len_err_frms"},
145 {"rmac_pause_ctrl_frms"},
146 {"rmac_discarded_frms"},
147 {"rmac_usized_frms"},
148 {"rmac_osized_frms"},
150 {"rmac_jabber_frms"},
158 {"rmac_err_drp_udp"},
160 {"rmac_accepted_ip"},
162 {"\n DRIVER STATISTICS"},
163 {"single_bit_ecc_errs"},
164 {"double_bit_ecc_errs"},
167 #define S2IO_STAT_LEN sizeof(ethtool_stats_keys)/ ETH_GSTRING_LEN
168 #define S2IO_STAT_STRINGS_LEN S2IO_STAT_LEN * ETH_GSTRING_LEN
170 #define S2IO_TEST_LEN sizeof(s2io_gstrings) / ETH_GSTRING_LEN
171 #define S2IO_STRINGS_LEN S2IO_TEST_LEN * ETH_GSTRING_LEN
173 #define S2IO_TIMER_CONF(timer, handle, arg, exp) \
174 init_timer(&timer); \
175 timer.function = handle; \
176 timer.data = (unsigned long) arg; \
177 mod_timer(&timer, (jiffies + exp)) \
180 static void s2io_vlan_rx_register(struct net_device
*dev
,
181 struct vlan_group
*grp
)
183 nic_t
*nic
= dev
->priv
;
186 spin_lock_irqsave(&nic
->tx_lock
, flags
);
188 spin_unlock_irqrestore(&nic
->tx_lock
, flags
);
191 /* Unregister the vlan */
192 static void s2io_vlan_rx_kill_vid(struct net_device
*dev
, unsigned long vid
)
194 nic_t
*nic
= dev
->priv
;
197 spin_lock_irqsave(&nic
->tx_lock
, flags
);
199 nic
->vlgrp
->vlan_devices
[vid
] = NULL
;
200 spin_unlock_irqrestore(&nic
->tx_lock
, flags
);
204 * Constants to be programmed into the Xena's registers, to configure
208 #define SWITCH_SIGN 0xA5A5A5A5A5A5A5A5ULL
211 static u64 herc_act_dtx_cfg
[] = {
213 0x8000051536750000ULL
, 0x80000515367500E0ULL
,
215 0x8000051536750004ULL
, 0x80000515367500E4ULL
,
217 0x80010515003F0000ULL
, 0x80010515003F00E0ULL
,
219 0x80010515003F0004ULL
, 0x80010515003F00E4ULL
,
221 0x801205150D440000ULL
, 0x801205150D4400E0ULL
,
223 0x801205150D440004ULL
, 0x801205150D4400E4ULL
,
225 0x80020515F2100000ULL
, 0x80020515F21000E0ULL
,
227 0x80020515F2100004ULL
, 0x80020515F21000E4ULL
,
232 static u64 xena_mdio_cfg
[] = {
234 0xC001010000000000ULL
, 0xC0010100000000E0ULL
,
235 0xC0010100008000E4ULL
,
236 /* Remove Reset from PMA PLL */
237 0xC001010000000000ULL
, 0xC0010100000000E0ULL
,
238 0xC0010100000000E4ULL
,
242 static u64 xena_dtx_cfg
[] = {
243 0x8000051500000000ULL
, 0x80000515000000E0ULL
,
244 0x80000515D93500E4ULL
, 0x8001051500000000ULL
,
245 0x80010515000000E0ULL
, 0x80010515001E00E4ULL
,
246 0x8002051500000000ULL
, 0x80020515000000E0ULL
,
247 0x80020515F21000E4ULL
,
248 /* Set PADLOOPBACKN */
249 0x8002051500000000ULL
, 0x80020515000000E0ULL
,
250 0x80020515B20000E4ULL
, 0x8003051500000000ULL
,
251 0x80030515000000E0ULL
, 0x80030515B20000E4ULL
,
252 0x8004051500000000ULL
, 0x80040515000000E0ULL
,
253 0x80040515B20000E4ULL
, 0x8005051500000000ULL
,
254 0x80050515000000E0ULL
, 0x80050515B20000E4ULL
,
256 /* Remove PADLOOPBACKN */
257 0x8002051500000000ULL
, 0x80020515000000E0ULL
,
258 0x80020515F20000E4ULL
, 0x8003051500000000ULL
,
259 0x80030515000000E0ULL
, 0x80030515F20000E4ULL
,
260 0x8004051500000000ULL
, 0x80040515000000E0ULL
,
261 0x80040515F20000E4ULL
, 0x8005051500000000ULL
,
262 0x80050515000000E0ULL
, 0x80050515F20000E4ULL
,
267 * Constants for Fixing the MacAddress problem seen mostly on
270 static u64 fix_mac
[] = {
271 0x0060000000000000ULL
, 0x0060600000000000ULL
,
272 0x0040600000000000ULL
, 0x0000600000000000ULL
,
273 0x0020600000000000ULL
, 0x0060600000000000ULL
,
274 0x0020600000000000ULL
, 0x0060600000000000ULL
,
275 0x0020600000000000ULL
, 0x0060600000000000ULL
,
276 0x0020600000000000ULL
, 0x0060600000000000ULL
,
277 0x0020600000000000ULL
, 0x0060600000000000ULL
,
278 0x0020600000000000ULL
, 0x0060600000000000ULL
,
279 0x0020600000000000ULL
, 0x0060600000000000ULL
,
280 0x0020600000000000ULL
, 0x0060600000000000ULL
,
281 0x0020600000000000ULL
, 0x0060600000000000ULL
,
282 0x0020600000000000ULL
, 0x0060600000000000ULL
,
283 0x0020600000000000ULL
, 0x0000600000000000ULL
,
284 0x0040600000000000ULL
, 0x0060600000000000ULL
,
288 /* Module Loadable parameters. */
289 static unsigned int tx_fifo_num
= 1;
290 static unsigned int tx_fifo_len
[MAX_TX_FIFOS
] =
291 {[0 ...(MAX_TX_FIFOS
- 1)] = 0 };
292 static unsigned int rx_ring_num
= 1;
293 static unsigned int rx_ring_sz
[MAX_RX_RINGS
] =
294 {[0 ...(MAX_RX_RINGS
- 1)] = 0 };
295 static unsigned int rts_frm_len
[MAX_RX_RINGS
] =
296 {[0 ...(MAX_RX_RINGS
- 1)] = 0 };
297 static unsigned int use_continuous_tx_intrs
= 1;
298 static unsigned int rmac_pause_time
= 65535;
299 static unsigned int mc_pause_threshold_q0q3
= 187;
300 static unsigned int mc_pause_threshold_q4q7
= 187;
301 static unsigned int shared_splits
;
302 static unsigned int tmac_util_period
= 5;
303 static unsigned int rmac_util_period
= 5;
304 static unsigned int bimodal
= 0;
305 #ifndef CONFIG_S2IO_NAPI
306 static unsigned int indicate_max_pkts
;
308 /* Frequency of Rx desc syncs expressed as power of 2 */
309 static unsigned int rxsync_frequency
= 3;
313 * This table lists all the devices that this driver supports.
315 static struct pci_device_id s2io_tbl
[] __devinitdata
= {
316 {PCI_VENDOR_ID_S2IO
, PCI_DEVICE_ID_S2IO_WIN
,
317 PCI_ANY_ID
, PCI_ANY_ID
},
318 {PCI_VENDOR_ID_S2IO
, PCI_DEVICE_ID_S2IO_UNI
,
319 PCI_ANY_ID
, PCI_ANY_ID
},
320 {PCI_VENDOR_ID_S2IO
, PCI_DEVICE_ID_HERC_WIN
,
321 PCI_ANY_ID
, PCI_ANY_ID
},
322 {PCI_VENDOR_ID_S2IO
, PCI_DEVICE_ID_HERC_UNI
,
323 PCI_ANY_ID
, PCI_ANY_ID
},
327 MODULE_DEVICE_TABLE(pci
, s2io_tbl
);
329 static struct pci_driver s2io_driver
= {
331 .id_table
= s2io_tbl
,
332 .probe
= s2io_init_nic
,
333 .remove
= __devexit_p(s2io_rem_nic
),
336 /* A simplifier macro used both by init and free shared_mem Fns(). */
337 #define TXD_MEM_PAGE_CNT(len, per_each) ((len+per_each - 1) / per_each)
340 * init_shared_mem - Allocation and Initialization of Memory
341 * @nic: Device private variable.
342 * Description: The function allocates all the memory areas shared
343 * between the NIC and the driver. This includes Tx descriptors,
344 * Rx descriptors and the statistics block.
347 static int init_shared_mem(struct s2io_nic
*nic
)
350 void *tmp_v_addr
, *tmp_v_addr_next
;
351 dma_addr_t tmp_p_addr
, tmp_p_addr_next
;
352 RxD_block_t
*pre_rxd_blk
= NULL
;
353 int i
, j
, blk_cnt
, rx_sz
, tx_sz
;
354 int lst_size
, lst_per_page
;
355 struct net_device
*dev
= nic
->dev
;
356 #ifdef CONFIG_2BUFF_MODE
361 mac_info_t
*mac_control
;
362 struct config_param
*config
;
364 mac_control
= &nic
->mac_control
;
365 config
= &nic
->config
;
368 /* Allocation and initialization of TXDLs in FIOFs */
370 for (i
= 0; i
< config
->tx_fifo_num
; i
++) {
371 size
+= config
->tx_cfg
[i
].fifo_len
;
373 if (size
> MAX_AVAILABLE_TXDS
) {
374 DBG_PRINT(ERR_DBG
, "%s: Requested TxDs too high, ",
376 DBG_PRINT(ERR_DBG
, "Requested: %d, max supported: 8192\n", size
);
380 lst_size
= (sizeof(TxD_t
) * config
->max_txds
);
381 tx_sz
= lst_size
* size
;
382 lst_per_page
= PAGE_SIZE
/ lst_size
;
384 for (i
= 0; i
< config
->tx_fifo_num
; i
++) {
385 int fifo_len
= config
->tx_cfg
[i
].fifo_len
;
386 int list_holder_size
= fifo_len
* sizeof(list_info_hold_t
);
387 mac_control
->fifos
[i
].list_info
= kmalloc(list_holder_size
,
389 if (!mac_control
->fifos
[i
].list_info
) {
391 "Malloc failed for list_info\n");
394 memset(mac_control
->fifos
[i
].list_info
, 0, list_holder_size
);
396 for (i
= 0; i
< config
->tx_fifo_num
; i
++) {
397 int page_num
= TXD_MEM_PAGE_CNT(config
->tx_cfg
[i
].fifo_len
,
399 mac_control
->fifos
[i
].tx_curr_put_info
.offset
= 0;
400 mac_control
->fifos
[i
].tx_curr_put_info
.fifo_len
=
401 config
->tx_cfg
[i
].fifo_len
- 1;
402 mac_control
->fifos
[i
].tx_curr_get_info
.offset
= 0;
403 mac_control
->fifos
[i
].tx_curr_get_info
.fifo_len
=
404 config
->tx_cfg
[i
].fifo_len
- 1;
405 mac_control
->fifos
[i
].fifo_no
= i
;
406 mac_control
->fifos
[i
].nic
= nic
;
407 mac_control
->fifos
[i
].max_txds
= MAX_SKB_FRAGS
;
409 for (j
= 0; j
< page_num
; j
++) {
413 tmp_v
= pci_alloc_consistent(nic
->pdev
,
417 "pci_alloc_consistent ");
418 DBG_PRINT(ERR_DBG
, "failed for TxDL\n");
421 while (k
< lst_per_page
) {
422 int l
= (j
* lst_per_page
) + k
;
423 if (l
== config
->tx_cfg
[i
].fifo_len
)
425 mac_control
->fifos
[i
].list_info
[l
].list_virt_addr
=
426 tmp_v
+ (k
* lst_size
);
427 mac_control
->fifos
[i
].list_info
[l
].list_phy_addr
=
428 tmp_p
+ (k
* lst_size
);
434 /* Allocation and initialization of RXDs in Rings */
436 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
437 if (config
->rx_cfg
[i
].num_rxd
% (MAX_RXDS_PER_BLOCK
+ 1)) {
438 DBG_PRINT(ERR_DBG
, "%s: RxD count of ", dev
->name
);
439 DBG_PRINT(ERR_DBG
, "Ring%d is not a multiple of ",
441 DBG_PRINT(ERR_DBG
, "RxDs per Block");
444 size
+= config
->rx_cfg
[i
].num_rxd
;
445 mac_control
->rings
[i
].block_count
=
446 config
->rx_cfg
[i
].num_rxd
/ (MAX_RXDS_PER_BLOCK
+ 1);
447 mac_control
->rings
[i
].pkt_cnt
=
448 config
->rx_cfg
[i
].num_rxd
- mac_control
->rings
[i
].block_count
;
450 size
= (size
* (sizeof(RxD_t
)));
453 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
454 mac_control
->rings
[i
].rx_curr_get_info
.block_index
= 0;
455 mac_control
->rings
[i
].rx_curr_get_info
.offset
= 0;
456 mac_control
->rings
[i
].rx_curr_get_info
.ring_len
=
457 config
->rx_cfg
[i
].num_rxd
- 1;
458 mac_control
->rings
[i
].rx_curr_put_info
.block_index
= 0;
459 mac_control
->rings
[i
].rx_curr_put_info
.offset
= 0;
460 mac_control
->rings
[i
].rx_curr_put_info
.ring_len
=
461 config
->rx_cfg
[i
].num_rxd
- 1;
462 mac_control
->rings
[i
].nic
= nic
;
463 mac_control
->rings
[i
].ring_no
= i
;
466 config
->rx_cfg
[i
].num_rxd
/ (MAX_RXDS_PER_BLOCK
+ 1);
467 /* Allocating all the Rx blocks */
468 for (j
= 0; j
< blk_cnt
; j
++) {
469 #ifndef CONFIG_2BUFF_MODE
470 size
= (MAX_RXDS_PER_BLOCK
+ 1) * (sizeof(RxD_t
));
472 size
= SIZE_OF_BLOCK
;
474 tmp_v_addr
= pci_alloc_consistent(nic
->pdev
, size
,
476 if (tmp_v_addr
== NULL
) {
478 * In case of failure, free_shared_mem()
479 * is called, which should free any
480 * memory that was alloced till the
483 mac_control
->rings
[i
].rx_blocks
[j
].block_virt_addr
=
487 memset(tmp_v_addr
, 0, size
);
488 mac_control
->rings
[i
].rx_blocks
[j
].block_virt_addr
=
490 mac_control
->rings
[i
].rx_blocks
[j
].block_dma_addr
=
493 /* Interlinking all Rx Blocks */
494 for (j
= 0; j
< blk_cnt
; j
++) {
496 mac_control
->rings
[i
].rx_blocks
[j
].block_virt_addr
;
498 mac_control
->rings
[i
].rx_blocks
[(j
+ 1) %
499 blk_cnt
].block_virt_addr
;
501 mac_control
->rings
[i
].rx_blocks
[j
].block_dma_addr
;
503 mac_control
->rings
[i
].rx_blocks
[(j
+ 1) %
504 blk_cnt
].block_dma_addr
;
506 pre_rxd_blk
= (RxD_block_t
*) tmp_v_addr
;
507 pre_rxd_blk
->reserved_1
= END_OF_BLOCK
; /* last RxD
510 #ifndef CONFIG_2BUFF_MODE
511 pre_rxd_blk
->reserved_2_pNext_RxD_block
=
512 (unsigned long) tmp_v_addr_next
;
514 pre_rxd_blk
->pNext_RxD_Blk_physical
=
515 (u64
) tmp_p_addr_next
;
519 #ifdef CONFIG_2BUFF_MODE
521 * Allocation of Storages for buffer addresses in 2BUFF mode
522 * and the buffers as well.
524 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
526 config
->rx_cfg
[i
].num_rxd
/ (MAX_RXDS_PER_BLOCK
+ 1);
527 mac_control
->rings
[i
].ba
= kmalloc((sizeof(buffAdd_t
*) * blk_cnt
),
529 if (!mac_control
->rings
[i
].ba
)
531 for (j
= 0; j
< blk_cnt
; j
++) {
533 mac_control
->rings
[i
].ba
[j
] = kmalloc((sizeof(buffAdd_t
) *
534 (MAX_RXDS_PER_BLOCK
+ 1)),
536 if (!mac_control
->rings
[i
].ba
[j
])
538 while (k
!= MAX_RXDS_PER_BLOCK
) {
539 ba
= &mac_control
->rings
[i
].ba
[j
][k
];
541 ba
->ba_0_org
= (void *) kmalloc
542 (BUF0_LEN
+ ALIGN_SIZE
, GFP_KERNEL
);
545 tmp
= (u64
) ba
->ba_0_org
;
547 tmp
&= ~((u64
) ALIGN_SIZE
);
548 ba
->ba_0
= (void *) tmp
;
550 ba
->ba_1_org
= (void *) kmalloc
551 (BUF1_LEN
+ ALIGN_SIZE
, GFP_KERNEL
);
554 tmp
= (u64
) ba
->ba_1_org
;
556 tmp
&= ~((u64
) ALIGN_SIZE
);
557 ba
->ba_1
= (void *) tmp
;
564 /* Allocation and initialization of Statistics block */
565 size
= sizeof(StatInfo_t
);
566 mac_control
->stats_mem
= pci_alloc_consistent
567 (nic
->pdev
, size
, &mac_control
->stats_mem_phy
);
569 if (!mac_control
->stats_mem
) {
571 * In case of failure, free_shared_mem() is called, which
572 * should free any memory that was alloced till the
577 mac_control
->stats_mem_sz
= size
;
579 tmp_v_addr
= mac_control
->stats_mem
;
580 mac_control
->stats_info
= (StatInfo_t
*) tmp_v_addr
;
581 memset(tmp_v_addr
, 0, size
);
582 DBG_PRINT(INIT_DBG
, "%s:Ring Mem PHY: 0x%llx\n", dev
->name
,
583 (unsigned long long) tmp_p_addr
);
589 * free_shared_mem - Free the allocated Memory
590 * @nic: Device private variable.
591 * Description: This function is to free all memory locations allocated by
592 * the init_shared_mem() function and return it to the kernel.
595 static void free_shared_mem(struct s2io_nic
*nic
)
597 int i
, j
, blk_cnt
, size
;
599 dma_addr_t tmp_p_addr
;
600 mac_info_t
*mac_control
;
601 struct config_param
*config
;
602 int lst_size
, lst_per_page
;
608 mac_control
= &nic
->mac_control
;
609 config
= &nic
->config
;
611 lst_size
= (sizeof(TxD_t
) * config
->max_txds
);
612 lst_per_page
= PAGE_SIZE
/ lst_size
;
614 for (i
= 0; i
< config
->tx_fifo_num
; i
++) {
615 int page_num
= TXD_MEM_PAGE_CNT(config
->tx_cfg
[i
].fifo_len
,
617 for (j
= 0; j
< page_num
; j
++) {
618 int mem_blks
= (j
* lst_per_page
);
619 if ((!mac_control
->fifos
[i
].list_info
) ||
620 (!mac_control
->fifos
[i
].list_info
[mem_blks
].
623 pci_free_consistent(nic
->pdev
, PAGE_SIZE
,
624 mac_control
->fifos
[i
].
627 mac_control
->fifos
[i
].
631 kfree(mac_control
->fifos
[i
].list_info
);
634 #ifndef CONFIG_2BUFF_MODE
635 size
= (MAX_RXDS_PER_BLOCK
+ 1) * (sizeof(RxD_t
));
637 size
= SIZE_OF_BLOCK
;
639 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
640 blk_cnt
= mac_control
->rings
[i
].block_count
;
641 for (j
= 0; j
< blk_cnt
; j
++) {
642 tmp_v_addr
= mac_control
->rings
[i
].rx_blocks
[j
].
644 tmp_p_addr
= mac_control
->rings
[i
].rx_blocks
[j
].
646 if (tmp_v_addr
== NULL
)
648 pci_free_consistent(nic
->pdev
, size
,
649 tmp_v_addr
, tmp_p_addr
);
653 #ifdef CONFIG_2BUFF_MODE
654 /* Freeing buffer storage addresses in 2BUFF mode. */
655 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
657 config
->rx_cfg
[i
].num_rxd
/ (MAX_RXDS_PER_BLOCK
+ 1);
658 for (j
= 0; j
< blk_cnt
; j
++) {
660 if (!mac_control
->rings
[i
].ba
[j
])
662 while (k
!= MAX_RXDS_PER_BLOCK
) {
663 buffAdd_t
*ba
= &mac_control
->rings
[i
].ba
[j
][k
];
668 kfree(mac_control
->rings
[i
].ba
[j
]);
670 if (mac_control
->rings
[i
].ba
)
671 kfree(mac_control
->rings
[i
].ba
);
675 if (mac_control
->stats_mem
) {
676 pci_free_consistent(nic
->pdev
,
677 mac_control
->stats_mem_sz
,
678 mac_control
->stats_mem
,
679 mac_control
->stats_mem_phy
);
684 * s2io_verify_pci_mode -
687 static int s2io_verify_pci_mode(nic_t
*nic
)
689 XENA_dev_config_t
*bar0
= (XENA_dev_config_t
*) nic
->bar0
;
690 register u64 val64
= 0;
693 val64
= readq(&bar0
->pci_mode
);
694 mode
= (u8
)GET_PCI_MODE(val64
);
696 if ( val64
& PCI_MODE_UNKNOWN_MODE
)
697 return -1; /* Unknown PCI mode */
703 * s2io_print_pci_mode -
705 static int s2io_print_pci_mode(nic_t
*nic
)
707 XENA_dev_config_t
*bar0
= (XENA_dev_config_t
*) nic
->bar0
;
708 register u64 val64
= 0;
710 struct config_param
*config
= &nic
->config
;
712 val64
= readq(&bar0
->pci_mode
);
713 mode
= (u8
)GET_PCI_MODE(val64
);
715 if ( val64
& PCI_MODE_UNKNOWN_MODE
)
716 return -1; /* Unknown PCI mode */
718 if (val64
& PCI_MODE_32_BITS
) {
719 DBG_PRINT(ERR_DBG
, "%s: Device is on 32 bit ", nic
->dev
->name
);
721 DBG_PRINT(ERR_DBG
, "%s: Device is on 64 bit ", nic
->dev
->name
);
725 case PCI_MODE_PCI_33
:
726 DBG_PRINT(ERR_DBG
, "33MHz PCI bus\n");
727 config
->bus_speed
= 33;
729 case PCI_MODE_PCI_66
:
730 DBG_PRINT(ERR_DBG
, "66MHz PCI bus\n");
731 config
->bus_speed
= 133;
733 case PCI_MODE_PCIX_M1_66
:
734 DBG_PRINT(ERR_DBG
, "66MHz PCIX(M1) bus\n");
735 config
->bus_speed
= 133; /* Herc doubles the clock rate */
737 case PCI_MODE_PCIX_M1_100
:
738 DBG_PRINT(ERR_DBG
, "100MHz PCIX(M1) bus\n");
739 config
->bus_speed
= 200;
741 case PCI_MODE_PCIX_M1_133
:
742 DBG_PRINT(ERR_DBG
, "133MHz PCIX(M1) bus\n");
743 config
->bus_speed
= 266;
745 case PCI_MODE_PCIX_M2_66
:
746 DBG_PRINT(ERR_DBG
, "133MHz PCIX(M2) bus\n");
747 config
->bus_speed
= 133;
749 case PCI_MODE_PCIX_M2_100
:
750 DBG_PRINT(ERR_DBG
, "200MHz PCIX(M2) bus\n");
751 config
->bus_speed
= 200;
753 case PCI_MODE_PCIX_M2_133
:
754 DBG_PRINT(ERR_DBG
, "266MHz PCIX(M2) bus\n");
755 config
->bus_speed
= 266;
758 return -1; /* Unsupported bus speed */
765 * init_nic - Initialization of hardware
766 * @nic: device peivate variable
767 * Description: The function sequentially configures every block
768 * of the H/W from their reset values.
769 * Return Value: SUCCESS on success and
770 * '-1' on failure (endian settings incorrect).
773 static int init_nic(struct s2io_nic
*nic
)
775 XENA_dev_config_t __iomem
*bar0
= nic
->bar0
;
776 struct net_device
*dev
= nic
->dev
;
777 register u64 val64
= 0;
781 mac_info_t
*mac_control
;
782 struct config_param
*config
;
783 int mdio_cnt
= 0, dtx_cnt
= 0;
784 unsigned long long mem_share
;
787 mac_control
= &nic
->mac_control
;
788 config
= &nic
->config
;
790 /* to set the swapper controle on the card */
791 if(s2io_set_swapper(nic
)) {
792 DBG_PRINT(ERR_DBG
,"ERROR: Setting Swapper failed\n");
797 * Herc requires EOI to be removed from reset before XGXS, so..
799 if (nic
->device_type
& XFRAME_II_DEVICE
) {
800 val64
= 0xA500000000ULL
;
801 writeq(val64
, &bar0
->sw_reset
);
803 val64
= readq(&bar0
->sw_reset
);
806 /* Remove XGXS from reset state */
808 writeq(val64
, &bar0
->sw_reset
);
810 val64
= readq(&bar0
->sw_reset
);
812 /* Enable Receiving broadcasts */
813 add
= &bar0
->mac_cfg
;
814 val64
= readq(&bar0
->mac_cfg
);
815 val64
|= MAC_RMAC_BCAST_ENABLE
;
816 writeq(RMAC_CFG_KEY(0x4C0D), &bar0
->rmac_cfg_key
);
817 writel((u32
) val64
, add
);
818 writeq(RMAC_CFG_KEY(0x4C0D), &bar0
->rmac_cfg_key
);
819 writel((u32
) (val64
>> 32), (add
+ 4));
821 /* Read registers in all blocks */
822 val64
= readq(&bar0
->mac_int_mask
);
823 val64
= readq(&bar0
->mc_int_mask
);
824 val64
= readq(&bar0
->xgxs_int_mask
);
828 writeq(vBIT(val64
, 2, 14), &bar0
->rmac_max_pyld_len
);
831 * Configuring the XAUI Interface of Xena.
832 * ***************************************
833 * To Configure the Xena's XAUI, one has to write a series
834 * of 64 bit values into two registers in a particular
835 * sequence. Hence a macro 'SWITCH_SIGN' has been defined
836 * which will be defined in the array of configuration values
837 * (xena_dtx_cfg & xena_mdio_cfg) at appropriate places
838 * to switch writing from one regsiter to another. We continue
839 * writing these values until we encounter the 'END_SIGN' macro.
840 * For example, After making a series of 21 writes into
841 * dtx_control register the 'SWITCH_SIGN' appears and hence we
842 * start writing into mdio_control until we encounter END_SIGN.
844 if (nic
->device_type
& XFRAME_II_DEVICE
) {
845 while (herc_act_dtx_cfg
[dtx_cnt
] != END_SIGN
) {
846 SPECIAL_REG_WRITE(herc_act_dtx_cfg
[dtx_cnt
],
847 &bar0
->dtx_control
, UF
);
849 msleep(1); /* Necessary!! */
855 while (xena_dtx_cfg
[dtx_cnt
] != END_SIGN
) {
856 if (xena_dtx_cfg
[dtx_cnt
] == SWITCH_SIGN
) {
860 SPECIAL_REG_WRITE(xena_dtx_cfg
[dtx_cnt
],
861 &bar0
->dtx_control
, UF
);
862 val64
= readq(&bar0
->dtx_control
);
866 while (xena_mdio_cfg
[mdio_cnt
] != END_SIGN
) {
867 if (xena_mdio_cfg
[mdio_cnt
] == SWITCH_SIGN
) {
871 SPECIAL_REG_WRITE(xena_mdio_cfg
[mdio_cnt
],
872 &bar0
->mdio_control
, UF
);
873 val64
= readq(&bar0
->mdio_control
);
876 if ((xena_dtx_cfg
[dtx_cnt
] == END_SIGN
) &&
877 (xena_mdio_cfg
[mdio_cnt
] == END_SIGN
)) {
885 /* Tx DMA Initialization */
887 writeq(val64
, &bar0
->tx_fifo_partition_0
);
888 writeq(val64
, &bar0
->tx_fifo_partition_1
);
889 writeq(val64
, &bar0
->tx_fifo_partition_2
);
890 writeq(val64
, &bar0
->tx_fifo_partition_3
);
893 for (i
= 0, j
= 0; i
< config
->tx_fifo_num
; i
++) {
895 vBIT(config
->tx_cfg
[i
].fifo_len
- 1, ((i
* 32) + 19),
896 13) | vBIT(config
->tx_cfg
[i
].fifo_priority
,
899 if (i
== (config
->tx_fifo_num
- 1)) {
906 writeq(val64
, &bar0
->tx_fifo_partition_0
);
910 writeq(val64
, &bar0
->tx_fifo_partition_1
);
914 writeq(val64
, &bar0
->tx_fifo_partition_2
);
918 writeq(val64
, &bar0
->tx_fifo_partition_3
);
923 /* Enable Tx FIFO partition 0. */
924 val64
= readq(&bar0
->tx_fifo_partition_0
);
925 val64
|= BIT(0); /* To enable the FIFO partition. */
926 writeq(val64
, &bar0
->tx_fifo_partition_0
);
929 * Disable 4 PCCs for Xena1, 2 and 3 as per H/W bug
930 * SXE-008 TRANSMIT DMA ARBITRATION ISSUE.
932 if ((nic
->device_type
== XFRAME_I_DEVICE
) &&
933 (get_xena_rev_id(nic
->pdev
) < 4))
934 writeq(PCC_ENABLE_FOUR
, &bar0
->pcc_enable
);
936 val64
= readq(&bar0
->tx_fifo_partition_0
);
937 DBG_PRINT(INIT_DBG
, "Fifo partition at: 0x%p is: 0x%llx\n",
938 &bar0
->tx_fifo_partition_0
, (unsigned long long) val64
);
941 * Initialization of Tx_PA_CONFIG register to ignore packet
942 * integrity checking.
944 val64
= readq(&bar0
->tx_pa_cfg
);
945 val64
|= TX_PA_CFG_IGNORE_FRM_ERR
| TX_PA_CFG_IGNORE_SNAP_OUI
|
946 TX_PA_CFG_IGNORE_LLC_CTRL
| TX_PA_CFG_IGNORE_L2_ERR
;
947 writeq(val64
, &bar0
->tx_pa_cfg
);
949 /* Rx DMA intialization. */
951 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
953 vBIT(config
->rx_cfg
[i
].ring_priority
, (5 + (i
* 8)),
956 writeq(val64
, &bar0
->rx_queue_priority
);
959 * Allocating equal share of memory to all the
963 if (nic
->device_type
& XFRAME_II_DEVICE
)
968 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
971 mem_share
= (mem_size
/ config
->rx_ring_num
+
972 mem_size
% config
->rx_ring_num
);
973 val64
|= RX_QUEUE_CFG_Q0_SZ(mem_share
);
976 mem_share
= (mem_size
/ config
->rx_ring_num
);
977 val64
|= RX_QUEUE_CFG_Q1_SZ(mem_share
);
980 mem_share
= (mem_size
/ config
->rx_ring_num
);
981 val64
|= RX_QUEUE_CFG_Q2_SZ(mem_share
);
984 mem_share
= (mem_size
/ config
->rx_ring_num
);
985 val64
|= RX_QUEUE_CFG_Q3_SZ(mem_share
);
988 mem_share
= (mem_size
/ config
->rx_ring_num
);
989 val64
|= RX_QUEUE_CFG_Q4_SZ(mem_share
);
992 mem_share
= (mem_size
/ config
->rx_ring_num
);
993 val64
|= RX_QUEUE_CFG_Q5_SZ(mem_share
);
996 mem_share
= (mem_size
/ config
->rx_ring_num
);
997 val64
|= RX_QUEUE_CFG_Q6_SZ(mem_share
);
1000 mem_share
= (mem_size
/ config
->rx_ring_num
);
1001 val64
|= RX_QUEUE_CFG_Q7_SZ(mem_share
);
1005 writeq(val64
, &bar0
->rx_queue_cfg
);
1008 * Filling Tx round robin registers
1009 * as per the number of FIFOs
1011 switch (config
->tx_fifo_num
) {
1013 val64
= 0x0000000000000000ULL
;
1014 writeq(val64
, &bar0
->tx_w_round_robin_0
);
1015 writeq(val64
, &bar0
->tx_w_round_robin_1
);
1016 writeq(val64
, &bar0
->tx_w_round_robin_2
);
1017 writeq(val64
, &bar0
->tx_w_round_robin_3
);
1018 writeq(val64
, &bar0
->tx_w_round_robin_4
);
1021 val64
= 0x0000010000010000ULL
;
1022 writeq(val64
, &bar0
->tx_w_round_robin_0
);
1023 val64
= 0x0100000100000100ULL
;
1024 writeq(val64
, &bar0
->tx_w_round_robin_1
);
1025 val64
= 0x0001000001000001ULL
;
1026 writeq(val64
, &bar0
->tx_w_round_robin_2
);
1027 val64
= 0x0000010000010000ULL
;
1028 writeq(val64
, &bar0
->tx_w_round_robin_3
);
1029 val64
= 0x0100000000000000ULL
;
1030 writeq(val64
, &bar0
->tx_w_round_robin_4
);
1033 val64
= 0x0001000102000001ULL
;
1034 writeq(val64
, &bar0
->tx_w_round_robin_0
);
1035 val64
= 0x0001020000010001ULL
;
1036 writeq(val64
, &bar0
->tx_w_round_robin_1
);
1037 val64
= 0x0200000100010200ULL
;
1038 writeq(val64
, &bar0
->tx_w_round_robin_2
);
1039 val64
= 0x0001000102000001ULL
;
1040 writeq(val64
, &bar0
->tx_w_round_robin_3
);
1041 val64
= 0x0001020000000000ULL
;
1042 writeq(val64
, &bar0
->tx_w_round_robin_4
);
1045 val64
= 0x0001020300010200ULL
;
1046 writeq(val64
, &bar0
->tx_w_round_robin_0
);
1047 val64
= 0x0100000102030001ULL
;
1048 writeq(val64
, &bar0
->tx_w_round_robin_1
);
1049 val64
= 0x0200010000010203ULL
;
1050 writeq(val64
, &bar0
->tx_w_round_robin_2
);
1051 val64
= 0x0001020001000001ULL
;
1052 writeq(val64
, &bar0
->tx_w_round_robin_3
);
1053 val64
= 0x0203000100000000ULL
;
1054 writeq(val64
, &bar0
->tx_w_round_robin_4
);
1057 val64
= 0x0001000203000102ULL
;
1058 writeq(val64
, &bar0
->tx_w_round_robin_0
);
1059 val64
= 0x0001020001030004ULL
;
1060 writeq(val64
, &bar0
->tx_w_round_robin_1
);
1061 val64
= 0x0001000203000102ULL
;
1062 writeq(val64
, &bar0
->tx_w_round_robin_2
);
1063 val64
= 0x0001020001030004ULL
;
1064 writeq(val64
, &bar0
->tx_w_round_robin_3
);
1065 val64
= 0x0001000000000000ULL
;
1066 writeq(val64
, &bar0
->tx_w_round_robin_4
);
1069 val64
= 0x0001020304000102ULL
;
1070 writeq(val64
, &bar0
->tx_w_round_robin_0
);
1071 val64
= 0x0304050001020001ULL
;
1072 writeq(val64
, &bar0
->tx_w_round_robin_1
);
1073 val64
= 0x0203000100000102ULL
;
1074 writeq(val64
, &bar0
->tx_w_round_robin_2
);
1075 val64
= 0x0304000102030405ULL
;
1076 writeq(val64
, &bar0
->tx_w_round_robin_3
);
1077 val64
= 0x0001000200000000ULL
;
1078 writeq(val64
, &bar0
->tx_w_round_robin_4
);
1081 val64
= 0x0001020001020300ULL
;
1082 writeq(val64
, &bar0
->tx_w_round_robin_0
);
1083 val64
= 0x0102030400010203ULL
;
1084 writeq(val64
, &bar0
->tx_w_round_robin_1
);
1085 val64
= 0x0405060001020001ULL
;
1086 writeq(val64
, &bar0
->tx_w_round_robin_2
);
1087 val64
= 0x0304050000010200ULL
;
1088 writeq(val64
, &bar0
->tx_w_round_robin_3
);
1089 val64
= 0x0102030000000000ULL
;
1090 writeq(val64
, &bar0
->tx_w_round_robin_4
);
1093 val64
= 0x0001020300040105ULL
;
1094 writeq(val64
, &bar0
->tx_w_round_robin_0
);
1095 val64
= 0x0200030106000204ULL
;
1096 writeq(val64
, &bar0
->tx_w_round_robin_1
);
1097 val64
= 0x0103000502010007ULL
;
1098 writeq(val64
, &bar0
->tx_w_round_robin_2
);
1099 val64
= 0x0304010002060500ULL
;
1100 writeq(val64
, &bar0
->tx_w_round_robin_3
);
1101 val64
= 0x0103020400000000ULL
;
1102 writeq(val64
, &bar0
->tx_w_round_robin_4
);
1106 /* Filling the Rx round robin registers as per the
1107 * number of Rings and steering based on QoS.
1109 switch (config
->rx_ring_num
) {
1111 val64
= 0x8080808080808080ULL
;
1112 writeq(val64
, &bar0
->rts_qos_steering
);
1115 val64
= 0x0000010000010000ULL
;
1116 writeq(val64
, &bar0
->rx_w_round_robin_0
);
1117 val64
= 0x0100000100000100ULL
;
1118 writeq(val64
, &bar0
->rx_w_round_robin_1
);
1119 val64
= 0x0001000001000001ULL
;
1120 writeq(val64
, &bar0
->rx_w_round_robin_2
);
1121 val64
= 0x0000010000010000ULL
;
1122 writeq(val64
, &bar0
->rx_w_round_robin_3
);
1123 val64
= 0x0100000000000000ULL
;
1124 writeq(val64
, &bar0
->rx_w_round_robin_4
);
1126 val64
= 0x8080808040404040ULL
;
1127 writeq(val64
, &bar0
->rts_qos_steering
);
1130 val64
= 0x0001000102000001ULL
;
1131 writeq(val64
, &bar0
->rx_w_round_robin_0
);
1132 val64
= 0x0001020000010001ULL
;
1133 writeq(val64
, &bar0
->rx_w_round_robin_1
);
1134 val64
= 0x0200000100010200ULL
;
1135 writeq(val64
, &bar0
->rx_w_round_robin_2
);
1136 val64
= 0x0001000102000001ULL
;
1137 writeq(val64
, &bar0
->rx_w_round_robin_3
);
1138 val64
= 0x0001020000000000ULL
;
1139 writeq(val64
, &bar0
->rx_w_round_robin_4
);
1141 val64
= 0x8080804040402020ULL
;
1142 writeq(val64
, &bar0
->rts_qos_steering
);
1145 val64
= 0x0001020300010200ULL
;
1146 writeq(val64
, &bar0
->rx_w_round_robin_0
);
1147 val64
= 0x0100000102030001ULL
;
1148 writeq(val64
, &bar0
->rx_w_round_robin_1
);
1149 val64
= 0x0200010000010203ULL
;
1150 writeq(val64
, &bar0
->rx_w_round_robin_2
);
1151 val64
= 0x0001020001000001ULL
;
1152 writeq(val64
, &bar0
->rx_w_round_robin_3
);
1153 val64
= 0x0203000100000000ULL
;
1154 writeq(val64
, &bar0
->rx_w_round_robin_4
);
1156 val64
= 0x8080404020201010ULL
;
1157 writeq(val64
, &bar0
->rts_qos_steering
);
1160 val64
= 0x0001000203000102ULL
;
1161 writeq(val64
, &bar0
->rx_w_round_robin_0
);
1162 val64
= 0x0001020001030004ULL
;
1163 writeq(val64
, &bar0
->rx_w_round_robin_1
);
1164 val64
= 0x0001000203000102ULL
;
1165 writeq(val64
, &bar0
->rx_w_round_robin_2
);
1166 val64
= 0x0001020001030004ULL
;
1167 writeq(val64
, &bar0
->rx_w_round_robin_3
);
1168 val64
= 0x0001000000000000ULL
;
1169 writeq(val64
, &bar0
->rx_w_round_robin_4
);
1171 val64
= 0x8080404020201008ULL
;
1172 writeq(val64
, &bar0
->rts_qos_steering
);
1175 val64
= 0x0001020304000102ULL
;
1176 writeq(val64
, &bar0
->rx_w_round_robin_0
);
1177 val64
= 0x0304050001020001ULL
;
1178 writeq(val64
, &bar0
->rx_w_round_robin_1
);
1179 val64
= 0x0203000100000102ULL
;
1180 writeq(val64
, &bar0
->rx_w_round_robin_2
);
1181 val64
= 0x0304000102030405ULL
;
1182 writeq(val64
, &bar0
->rx_w_round_robin_3
);
1183 val64
= 0x0001000200000000ULL
;
1184 writeq(val64
, &bar0
->rx_w_round_robin_4
);
1186 val64
= 0x8080404020100804ULL
;
1187 writeq(val64
, &bar0
->rts_qos_steering
);
1190 val64
= 0x0001020001020300ULL
;
1191 writeq(val64
, &bar0
->rx_w_round_robin_0
);
1192 val64
= 0x0102030400010203ULL
;
1193 writeq(val64
, &bar0
->rx_w_round_robin_1
);
1194 val64
= 0x0405060001020001ULL
;
1195 writeq(val64
, &bar0
->rx_w_round_robin_2
);
1196 val64
= 0x0304050000010200ULL
;
1197 writeq(val64
, &bar0
->rx_w_round_robin_3
);
1198 val64
= 0x0102030000000000ULL
;
1199 writeq(val64
, &bar0
->rx_w_round_robin_4
);
1201 val64
= 0x8080402010080402ULL
;
1202 writeq(val64
, &bar0
->rts_qos_steering
);
1205 val64
= 0x0001020300040105ULL
;
1206 writeq(val64
, &bar0
->rx_w_round_robin_0
);
1207 val64
= 0x0200030106000204ULL
;
1208 writeq(val64
, &bar0
->rx_w_round_robin_1
);
1209 val64
= 0x0103000502010007ULL
;
1210 writeq(val64
, &bar0
->rx_w_round_robin_2
);
1211 val64
= 0x0304010002060500ULL
;
1212 writeq(val64
, &bar0
->rx_w_round_robin_3
);
1213 val64
= 0x0103020400000000ULL
;
1214 writeq(val64
, &bar0
->rx_w_round_robin_4
);
1216 val64
= 0x8040201008040201ULL
;
1217 writeq(val64
, &bar0
->rts_qos_steering
);
1223 for (i
= 0; i
< 8; i
++)
1224 writeq(val64
, &bar0
->rts_frm_len_n
[i
]);
1226 /* Set the default rts frame length for the rings configured */
1227 val64
= MAC_RTS_FRM_LEN_SET(dev
->mtu
+22);
1228 for (i
= 0 ; i
< config
->rx_ring_num
; i
++)
1229 writeq(val64
, &bar0
->rts_frm_len_n
[i
]);
1231 /* Set the frame length for the configured rings
1232 * desired by the user
1234 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
1235 /* If rts_frm_len[i] == 0 then it is assumed that user not
1236 * specified frame length steering.
1237 * If the user provides the frame length then program
1238 * the rts_frm_len register for those values or else
1239 * leave it as it is.
1241 if (rts_frm_len
[i
] != 0) {
1242 writeq(MAC_RTS_FRM_LEN_SET(rts_frm_len
[i
]),
1243 &bar0
->rts_frm_len_n
[i
]);
1247 /* Program statistics memory */
1248 writeq(mac_control
->stats_mem_phy
, &bar0
->stat_addr
);
1250 if (nic
->device_type
== XFRAME_II_DEVICE
) {
1251 val64
= STAT_BC(0x320);
1252 writeq(val64
, &bar0
->stat_byte_cnt
);
1256 * Initializing the sampling rate for the device to calculate the
1257 * bandwidth utilization.
1259 val64
= MAC_TX_LINK_UTIL_VAL(tmac_util_period
) |
1260 MAC_RX_LINK_UTIL_VAL(rmac_util_period
);
1261 writeq(val64
, &bar0
->mac_link_util
);
1265 * Initializing the Transmit and Receive Traffic Interrupt
1269 * TTI Initialization. Default Tx timer gets us about
1270 * 250 interrupts per sec. Continuous interrupts are enabled
1273 if (nic
->device_type
== XFRAME_II_DEVICE
) {
1274 int count
= (nic
->config
.bus_speed
* 125)/2;
1275 val64
= TTI_DATA1_MEM_TX_TIMER_VAL(count
);
1278 val64
= TTI_DATA1_MEM_TX_TIMER_VAL(0x2078);
1280 val64
|= TTI_DATA1_MEM_TX_URNG_A(0xA) |
1281 TTI_DATA1_MEM_TX_URNG_B(0x10) |
1282 TTI_DATA1_MEM_TX_URNG_C(0x30) | TTI_DATA1_MEM_TX_TIMER_AC_EN
;
1283 if (use_continuous_tx_intrs
)
1284 val64
|= TTI_DATA1_MEM_TX_TIMER_CI_EN
;
1285 writeq(val64
, &bar0
->tti_data1_mem
);
1287 val64
= TTI_DATA2_MEM_TX_UFC_A(0x10) |
1288 TTI_DATA2_MEM_TX_UFC_B(0x20) |
1289 TTI_DATA2_MEM_TX_UFC_C(0x70) | TTI_DATA2_MEM_TX_UFC_D(0x80);
1290 writeq(val64
, &bar0
->tti_data2_mem
);
1292 val64
= TTI_CMD_MEM_WE
| TTI_CMD_MEM_STROBE_NEW_CMD
;
1293 writeq(val64
, &bar0
->tti_command_mem
);
1296 * Once the operation completes, the Strobe bit of the command
1297 * register will be reset. We poll for this particular condition
1298 * We wait for a maximum of 500ms for the operation to complete,
1299 * if it's not complete by then we return error.
1303 val64
= readq(&bar0
->tti_command_mem
);
1304 if (!(val64
& TTI_CMD_MEM_STROBE_NEW_CMD
)) {
1308 DBG_PRINT(ERR_DBG
, "%s: TTI init Failed\n",
1316 if (nic
->config
.bimodal
) {
1318 for (k
= 0; k
< config
->rx_ring_num
; k
++) {
1319 val64
= TTI_CMD_MEM_WE
| TTI_CMD_MEM_STROBE_NEW_CMD
;
1320 val64
|= TTI_CMD_MEM_OFFSET(0x38+k
);
1321 writeq(val64
, &bar0
->tti_command_mem
);
1324 * Once the operation completes, the Strobe bit of the command
1325 * register will be reset. We poll for this particular condition
1326 * We wait for a maximum of 500ms for the operation to complete,
1327 * if it's not complete by then we return error.
1331 val64
= readq(&bar0
->tti_command_mem
);
1332 if (!(val64
& TTI_CMD_MEM_STROBE_NEW_CMD
)) {
1337 "%s: TTI init Failed\n",
1347 /* RTI Initialization */
1348 if (nic
->device_type
== XFRAME_II_DEVICE
) {
1350 * Programmed to generate Apprx 500 Intrs per
1353 int count
= (nic
->config
.bus_speed
* 125)/4;
1354 val64
= RTI_DATA1_MEM_RX_TIMER_VAL(count
);
1356 val64
= RTI_DATA1_MEM_RX_TIMER_VAL(0xFFF);
1358 val64
|= RTI_DATA1_MEM_RX_URNG_A(0xA) |
1359 RTI_DATA1_MEM_RX_URNG_B(0x10) |
1360 RTI_DATA1_MEM_RX_URNG_C(0x30) | RTI_DATA1_MEM_RX_TIMER_AC_EN
;
1362 writeq(val64
, &bar0
->rti_data1_mem
);
1364 val64
= RTI_DATA2_MEM_RX_UFC_A(0x1) |
1365 RTI_DATA2_MEM_RX_UFC_B(0x2) |
1366 RTI_DATA2_MEM_RX_UFC_C(0x40) | RTI_DATA2_MEM_RX_UFC_D(0x80);
1367 writeq(val64
, &bar0
->rti_data2_mem
);
1369 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
1370 val64
= RTI_CMD_MEM_WE
| RTI_CMD_MEM_STROBE_NEW_CMD
1371 | RTI_CMD_MEM_OFFSET(i
);
1372 writeq(val64
, &bar0
->rti_command_mem
);
1375 * Once the operation completes, the Strobe bit of the
1376 * command register will be reset. We poll for this
1377 * particular condition. We wait for a maximum of 500ms
1378 * for the operation to complete, if it's not complete
1379 * by then we return error.
1383 val64
= readq(&bar0
->rti_command_mem
);
1384 if (!(val64
& RTI_CMD_MEM_STROBE_NEW_CMD
)) {
1388 DBG_PRINT(ERR_DBG
, "%s: RTI init Failed\n",
1399 * Initializing proper values as Pause threshold into all
1400 * the 8 Queues on Rx side.
1402 writeq(0xffbbffbbffbbffbbULL
, &bar0
->mc_pause_thresh_q0q3
);
1403 writeq(0xffbbffbbffbbffbbULL
, &bar0
->mc_pause_thresh_q4q7
);
1405 /* Disable RMAC PAD STRIPPING */
1406 add
= (void *) &bar0
->mac_cfg
;
1407 val64
= readq(&bar0
->mac_cfg
);
1408 val64
&= ~(MAC_CFG_RMAC_STRIP_PAD
);
1409 writeq(RMAC_CFG_KEY(0x4C0D), &bar0
->rmac_cfg_key
);
1410 writel((u32
) (val64
), add
);
1411 writeq(RMAC_CFG_KEY(0x4C0D), &bar0
->rmac_cfg_key
);
1412 writel((u32
) (val64
>> 32), (add
+ 4));
1413 val64
= readq(&bar0
->mac_cfg
);
1416 * Set the time value to be inserted in the pause frame
1417 * generated by xena.
1419 val64
= readq(&bar0
->rmac_pause_cfg
);
1420 val64
&= ~(RMAC_PAUSE_HG_PTIME(0xffff));
1421 val64
|= RMAC_PAUSE_HG_PTIME(nic
->mac_control
.rmac_pause_time
);
1422 writeq(val64
, &bar0
->rmac_pause_cfg
);
1425 * Set the Threshold Limit for Generating the pause frame
1426 * If the amount of data in any Queue exceeds ratio of
1427 * (mac_control.mc_pause_threshold_q0q3 or q4q7)/256
1428 * pause frame is generated
1431 for (i
= 0; i
< 4; i
++) {
1433 (((u64
) 0xFF00 | nic
->mac_control
.
1434 mc_pause_threshold_q0q3
)
1437 writeq(val64
, &bar0
->mc_pause_thresh_q0q3
);
1440 for (i
= 0; i
< 4; i
++) {
1442 (((u64
) 0xFF00 | nic
->mac_control
.
1443 mc_pause_threshold_q4q7
)
1446 writeq(val64
, &bar0
->mc_pause_thresh_q4q7
);
1449 * TxDMA will stop Read request if the number of read split has
1450 * exceeded the limit pointed by shared_splits
1452 val64
= readq(&bar0
->pic_control
);
1453 val64
|= PIC_CNTL_SHARED_SPLITS(shared_splits
);
1454 writeq(val64
, &bar0
->pic_control
);
1457 * Programming the Herc to split every write transaction
1458 * that does not start on an ADB to reduce disconnects.
1460 if (nic
->device_type
== XFRAME_II_DEVICE
) {
1461 val64
= WREQ_SPLIT_MASK_SET_MASK(255);
1462 writeq(val64
, &bar0
->wreq_split_mask
);
1465 /* Setting Link stability period to 64 ms */
1466 if (nic
->device_type
== XFRAME_II_DEVICE
) {
1467 val64
= MISC_LINK_STABILITY_PRD(3);
1468 writeq(val64
, &bar0
->misc_control
);
1473 #define LINK_UP_DOWN_INTERRUPT 1
1474 #define MAC_RMAC_ERR_TIMER 2
1476 #if defined(CONFIG_MSI_MODE) || defined(CONFIG_MSIX_MODE)
1477 #define s2io_link_fault_indication(x) MAC_RMAC_ERR_TIMER
1479 int s2io_link_fault_indication(nic_t
*nic
)
1481 if (nic
->device_type
== XFRAME_II_DEVICE
)
1482 return LINK_UP_DOWN_INTERRUPT
;
1484 return MAC_RMAC_ERR_TIMER
;
1489 * en_dis_able_nic_intrs - Enable or Disable the interrupts
1490 * @nic: device private variable,
1491 * @mask: A mask indicating which Intr block must be modified and,
1492 * @flag: A flag indicating whether to enable or disable the Intrs.
1493 * Description: This function will either disable or enable the interrupts
1494 * depending on the flag argument. The mask argument can be used to
1495 * enable/disable any Intr block.
1496 * Return Value: NONE.
1499 static void en_dis_able_nic_intrs(struct s2io_nic
*nic
, u16 mask
, int flag
)
1501 XENA_dev_config_t __iomem
*bar0
= nic
->bar0
;
1502 register u64 val64
= 0, temp64
= 0;
1504 /* Top level interrupt classification */
1505 /* PIC Interrupts */
1506 if ((mask
& (TX_PIC_INTR
| RX_PIC_INTR
))) {
1507 /* Enable PIC Intrs in the general intr mask register */
1508 val64
= TXPIC_INT_M
| PIC_RX_INT_M
;
1509 if (flag
== ENABLE_INTRS
) {
1510 temp64
= readq(&bar0
->general_int_mask
);
1511 temp64
&= ~((u64
) val64
);
1512 writeq(temp64
, &bar0
->general_int_mask
);
1514 * If Hercules adapter enable GPIO otherwise
1515 * disabled all PCIX, Flash, MDIO, IIC and GPIO
1516 * interrupts for now.
1519 if (s2io_link_fault_indication(nic
) ==
1520 LINK_UP_DOWN_INTERRUPT
) {
1521 temp64
= readq(&bar0
->pic_int_mask
);
1522 temp64
&= ~((u64
) PIC_INT_GPIO
);
1523 writeq(temp64
, &bar0
->pic_int_mask
);
1524 temp64
= readq(&bar0
->gpio_int_mask
);
1525 temp64
&= ~((u64
) GPIO_INT_MASK_LINK_UP
);
1526 writeq(temp64
, &bar0
->gpio_int_mask
);
1528 writeq(DISABLE_ALL_INTRS
, &bar0
->pic_int_mask
);
1531 * No MSI Support is available presently, so TTI and
1532 * RTI interrupts are also disabled.
1534 } else if (flag
== DISABLE_INTRS
) {
1536 * Disable PIC Intrs in the general
1537 * intr mask register
1539 writeq(DISABLE_ALL_INTRS
, &bar0
->pic_int_mask
);
1540 temp64
= readq(&bar0
->general_int_mask
);
1542 writeq(val64
, &bar0
->general_int_mask
);
1546 /* DMA Interrupts */
1547 /* Enabling/Disabling Tx DMA interrupts */
1548 if (mask
& TX_DMA_INTR
) {
1549 /* Enable TxDMA Intrs in the general intr mask register */
1550 val64
= TXDMA_INT_M
;
1551 if (flag
== ENABLE_INTRS
) {
1552 temp64
= readq(&bar0
->general_int_mask
);
1553 temp64
&= ~((u64
) val64
);
1554 writeq(temp64
, &bar0
->general_int_mask
);
1556 * Keep all interrupts other than PFC interrupt
1557 * and PCC interrupt disabled in DMA level.
1559 val64
= DISABLE_ALL_INTRS
& ~(TXDMA_PFC_INT_M
|
1561 writeq(val64
, &bar0
->txdma_int_mask
);
1563 * Enable only the MISC error 1 interrupt in PFC block
1565 val64
= DISABLE_ALL_INTRS
& (~PFC_MISC_ERR_1
);
1566 writeq(val64
, &bar0
->pfc_err_mask
);
1568 * Enable only the FB_ECC error interrupt in PCC block
1570 val64
= DISABLE_ALL_INTRS
& (~PCC_FB_ECC_ERR
);
1571 writeq(val64
, &bar0
->pcc_err_mask
);
1572 } else if (flag
== DISABLE_INTRS
) {
1574 * Disable TxDMA Intrs in the general intr mask
1577 writeq(DISABLE_ALL_INTRS
, &bar0
->txdma_int_mask
);
1578 writeq(DISABLE_ALL_INTRS
, &bar0
->pfc_err_mask
);
1579 temp64
= readq(&bar0
->general_int_mask
);
1581 writeq(val64
, &bar0
->general_int_mask
);
1585 /* Enabling/Disabling Rx DMA interrupts */
1586 if (mask
& RX_DMA_INTR
) {
1587 /* Enable RxDMA Intrs in the general intr mask register */
1588 val64
= RXDMA_INT_M
;
1589 if (flag
== ENABLE_INTRS
) {
1590 temp64
= readq(&bar0
->general_int_mask
);
1591 temp64
&= ~((u64
) val64
);
1592 writeq(temp64
, &bar0
->general_int_mask
);
1594 * All RxDMA block interrupts are disabled for now
1597 writeq(DISABLE_ALL_INTRS
, &bar0
->rxdma_int_mask
);
1598 } else if (flag
== DISABLE_INTRS
) {
1600 * Disable RxDMA Intrs in the general intr mask
1603 writeq(DISABLE_ALL_INTRS
, &bar0
->rxdma_int_mask
);
1604 temp64
= readq(&bar0
->general_int_mask
);
1606 writeq(val64
, &bar0
->general_int_mask
);
1610 /* MAC Interrupts */
1611 /* Enabling/Disabling MAC interrupts */
1612 if (mask
& (TX_MAC_INTR
| RX_MAC_INTR
)) {
1613 val64
= TXMAC_INT_M
| RXMAC_INT_M
;
1614 if (flag
== ENABLE_INTRS
) {
1615 temp64
= readq(&bar0
->general_int_mask
);
1616 temp64
&= ~((u64
) val64
);
1617 writeq(temp64
, &bar0
->general_int_mask
);
1619 * All MAC block error interrupts are disabled for now
1622 } else if (flag
== DISABLE_INTRS
) {
1624 * Disable MAC Intrs in the general intr mask register
1626 writeq(DISABLE_ALL_INTRS
, &bar0
->mac_int_mask
);
1627 writeq(DISABLE_ALL_INTRS
,
1628 &bar0
->mac_rmac_err_mask
);
1630 temp64
= readq(&bar0
->general_int_mask
);
1632 writeq(val64
, &bar0
->general_int_mask
);
1636 /* XGXS Interrupts */
1637 if (mask
& (TX_XGXS_INTR
| RX_XGXS_INTR
)) {
1638 val64
= TXXGXS_INT_M
| RXXGXS_INT_M
;
1639 if (flag
== ENABLE_INTRS
) {
1640 temp64
= readq(&bar0
->general_int_mask
);
1641 temp64
&= ~((u64
) val64
);
1642 writeq(temp64
, &bar0
->general_int_mask
);
1644 * All XGXS block error interrupts are disabled for now
1647 writeq(DISABLE_ALL_INTRS
, &bar0
->xgxs_int_mask
);
1648 } else if (flag
== DISABLE_INTRS
) {
1650 * Disable MC Intrs in the general intr mask register
1652 writeq(DISABLE_ALL_INTRS
, &bar0
->xgxs_int_mask
);
1653 temp64
= readq(&bar0
->general_int_mask
);
1655 writeq(val64
, &bar0
->general_int_mask
);
1659 /* Memory Controller(MC) interrupts */
1660 if (mask
& MC_INTR
) {
1662 if (flag
== ENABLE_INTRS
) {
1663 temp64
= readq(&bar0
->general_int_mask
);
1664 temp64
&= ~((u64
) val64
);
1665 writeq(temp64
, &bar0
->general_int_mask
);
1667 * Enable all MC Intrs.
1669 writeq(0x0, &bar0
->mc_int_mask
);
1670 writeq(0x0, &bar0
->mc_err_mask
);
1671 } else if (flag
== DISABLE_INTRS
) {
1673 * Disable MC Intrs in the general intr mask register
1675 writeq(DISABLE_ALL_INTRS
, &bar0
->mc_int_mask
);
1676 temp64
= readq(&bar0
->general_int_mask
);
1678 writeq(val64
, &bar0
->general_int_mask
);
1683 /* Tx traffic interrupts */
1684 if (mask
& TX_TRAFFIC_INTR
) {
1685 val64
= TXTRAFFIC_INT_M
;
1686 if (flag
== ENABLE_INTRS
) {
1687 temp64
= readq(&bar0
->general_int_mask
);
1688 temp64
&= ~((u64
) val64
);
1689 writeq(temp64
, &bar0
->general_int_mask
);
1691 * Enable all the Tx side interrupts
1692 * writing 0 Enables all 64 TX interrupt levels
1694 writeq(0x0, &bar0
->tx_traffic_mask
);
1695 } else if (flag
== DISABLE_INTRS
) {
1697 * Disable Tx Traffic Intrs in the general intr mask
1700 writeq(DISABLE_ALL_INTRS
, &bar0
->tx_traffic_mask
);
1701 temp64
= readq(&bar0
->general_int_mask
);
1703 writeq(val64
, &bar0
->general_int_mask
);
1707 /* Rx traffic interrupts */
1708 if (mask
& RX_TRAFFIC_INTR
) {
1709 val64
= RXTRAFFIC_INT_M
;
1710 if (flag
== ENABLE_INTRS
) {
1711 temp64
= readq(&bar0
->general_int_mask
);
1712 temp64
&= ~((u64
) val64
);
1713 writeq(temp64
, &bar0
->general_int_mask
);
1714 /* writing 0 Enables all 8 RX interrupt levels */
1715 writeq(0x0, &bar0
->rx_traffic_mask
);
1716 } else if (flag
== DISABLE_INTRS
) {
1718 * Disable Rx Traffic Intrs in the general intr mask
1721 writeq(DISABLE_ALL_INTRS
, &bar0
->rx_traffic_mask
);
1722 temp64
= readq(&bar0
->general_int_mask
);
1724 writeq(val64
, &bar0
->general_int_mask
);
1729 static int check_prc_pcc_state(u64 val64
, int flag
, int rev_id
, int herc
)
1733 if (flag
== FALSE
) {
1734 if ((!herc
&& (rev_id
>= 4)) || herc
) {
1735 if (!(val64
& ADAPTER_STATUS_RMAC_PCC_IDLE
) &&
1736 ((val64
& ADAPTER_STATUS_RC_PRC_QUIESCENT
) ==
1737 ADAPTER_STATUS_RC_PRC_QUIESCENT
)) {
1741 if (!(val64
& ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE
) &&
1742 ((val64
& ADAPTER_STATUS_RC_PRC_QUIESCENT
) ==
1743 ADAPTER_STATUS_RC_PRC_QUIESCENT
)) {
1748 if ((!herc
&& (rev_id
>= 4)) || herc
) {
1749 if (((val64
& ADAPTER_STATUS_RMAC_PCC_IDLE
) ==
1750 ADAPTER_STATUS_RMAC_PCC_IDLE
) &&
1751 (!(val64
& ADAPTER_STATUS_RC_PRC_QUIESCENT
) ||
1752 ((val64
& ADAPTER_STATUS_RC_PRC_QUIESCENT
) ==
1753 ADAPTER_STATUS_RC_PRC_QUIESCENT
))) {
1757 if (((val64
& ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE
) ==
1758 ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE
) &&
1759 (!(val64
& ADAPTER_STATUS_RC_PRC_QUIESCENT
) ||
1760 ((val64
& ADAPTER_STATUS_RC_PRC_QUIESCENT
) ==
1761 ADAPTER_STATUS_RC_PRC_QUIESCENT
))) {
1770 * verify_xena_quiescence - Checks whether the H/W is ready
1771 * @val64 : Value read from adapter status register.
1772 * @flag : indicates if the adapter enable bit was ever written once
1774 * Description: Returns whether the H/W is ready to go or not. Depending
1775 * on whether adapter enable bit was written or not the comparison
1776 * differs and the calling function passes the input argument flag to
1778 * Return: 1 If xena is quiescence
1779 * 0 If Xena is not quiescence
1782 static int verify_xena_quiescence(nic_t
*sp
, u64 val64
, int flag
)
1785 u64 tmp64
= ~((u64
) val64
);
1786 int rev_id
= get_xena_rev_id(sp
->pdev
);
1788 herc
= (sp
->device_type
== XFRAME_II_DEVICE
);
1791 (ADAPTER_STATUS_TDMA_READY
| ADAPTER_STATUS_RDMA_READY
|
1792 ADAPTER_STATUS_PFC_READY
| ADAPTER_STATUS_TMAC_BUF_EMPTY
|
1793 ADAPTER_STATUS_PIC_QUIESCENT
| ADAPTER_STATUS_MC_DRAM_READY
|
1794 ADAPTER_STATUS_MC_QUEUES_READY
| ADAPTER_STATUS_M_PLL_LOCK
|
1795 ADAPTER_STATUS_P_PLL_LOCK
))) {
1796 ret
= check_prc_pcc_state(val64
, flag
, rev_id
, herc
);
1803 * fix_mac_address - Fix for Mac addr problem on Alpha platforms
1804 * @sp: Pointer to device specifc structure
1806 * New procedure to clear mac address reading problems on Alpha platforms
1810 void fix_mac_address(nic_t
* sp
)
1812 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
1816 while (fix_mac
[i
] != END_SIGN
) {
1817 writeq(fix_mac
[i
++], &bar0
->gpio_control
);
1819 val64
= readq(&bar0
->gpio_control
);
1824 * start_nic - Turns the device on
1825 * @nic : device private variable.
1827 * This function actually turns the device on. Before this function is
1828 * called,all Registers are configured from their reset states
1829 * and shared memory is allocated but the NIC is still quiescent. On
1830 * calling this function, the device interrupts are cleared and the NIC is
1831 * literally switched on by writing into the adapter control register.
1833 * SUCCESS on success and -1 on failure.
1836 static int start_nic(struct s2io_nic
*nic
)
1838 XENA_dev_config_t __iomem
*bar0
= nic
->bar0
;
1839 struct net_device
*dev
= nic
->dev
;
1840 register u64 val64
= 0;
1843 mac_info_t
*mac_control
;
1844 struct config_param
*config
;
1846 mac_control
= &nic
->mac_control
;
1847 config
= &nic
->config
;
1849 /* PRC Initialization and configuration */
1850 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
1851 writeq((u64
) mac_control
->rings
[i
].rx_blocks
[0].block_dma_addr
,
1852 &bar0
->prc_rxd0_n
[i
]);
1854 val64
= readq(&bar0
->prc_ctrl_n
[i
]);
1855 if (nic
->config
.bimodal
)
1856 val64
|= PRC_CTRL_BIMODAL_INTERRUPT
;
1857 #ifndef CONFIG_2BUFF_MODE
1858 val64
|= PRC_CTRL_RC_ENABLED
;
1860 val64
|= PRC_CTRL_RC_ENABLED
| PRC_CTRL_RING_MODE_3
;
1862 writeq(val64
, &bar0
->prc_ctrl_n
[i
]);
1865 #ifdef CONFIG_2BUFF_MODE
1866 /* Enabling 2 buffer mode by writing into Rx_pa_cfg reg. */
1867 val64
= readq(&bar0
->rx_pa_cfg
);
1868 val64
|= RX_PA_CFG_IGNORE_L2_ERR
;
1869 writeq(val64
, &bar0
->rx_pa_cfg
);
1873 * Enabling MC-RLDRAM. After enabling the device, we timeout
1874 * for around 100ms, which is approximately the time required
1875 * for the device to be ready for operation.
1877 val64
= readq(&bar0
->mc_rldram_mrs
);
1878 val64
|= MC_RLDRAM_QUEUE_SIZE_ENABLE
| MC_RLDRAM_MRS_ENABLE
;
1879 SPECIAL_REG_WRITE(val64
, &bar0
->mc_rldram_mrs
, UF
);
1880 val64
= readq(&bar0
->mc_rldram_mrs
);
1882 msleep(100); /* Delay by around 100 ms. */
1884 /* Enabling ECC Protection. */
1885 val64
= readq(&bar0
->adapter_control
);
1886 val64
&= ~ADAPTER_ECC_EN
;
1887 writeq(val64
, &bar0
->adapter_control
);
1890 * Clearing any possible Link state change interrupts that
1891 * could have popped up just before Enabling the card.
1893 val64
= readq(&bar0
->mac_rmac_err_reg
);
1895 writeq(val64
, &bar0
->mac_rmac_err_reg
);
1898 * Verify if the device is ready to be enabled, if so enable
1901 val64
= readq(&bar0
->adapter_status
);
1902 if (!verify_xena_quiescence(nic
, val64
, nic
->device_enabled_once
)) {
1903 DBG_PRINT(ERR_DBG
, "%s: device is not ready, ", dev
->name
);
1904 DBG_PRINT(ERR_DBG
, "Adapter status reads: 0x%llx\n",
1905 (unsigned long long) val64
);
1909 /* Enable select interrupts */
1910 interruptible
= TX_TRAFFIC_INTR
| RX_TRAFFIC_INTR
;
1911 interruptible
|= TX_PIC_INTR
| RX_PIC_INTR
;
1912 interruptible
|= TX_MAC_INTR
| RX_MAC_INTR
;
1914 en_dis_able_nic_intrs(nic
, interruptible
, ENABLE_INTRS
);
1917 * With some switches, link might be already up at this point.
1918 * Because of this weird behavior, when we enable laser,
1919 * we may not get link. We need to handle this. We cannot
1920 * figure out which switch is misbehaving. So we are forced to
1921 * make a global change.
1924 /* Enabling Laser. */
1925 val64
= readq(&bar0
->adapter_control
);
1926 val64
|= ADAPTER_EOI_TX_ON
;
1927 writeq(val64
, &bar0
->adapter_control
);
1929 /* SXE-002: Initialize link and activity LED */
1930 subid
= nic
->pdev
->subsystem_device
;
1931 if (((subid
& 0xFF) >= 0x07) &&
1932 (nic
->device_type
== XFRAME_I_DEVICE
)) {
1933 val64
= readq(&bar0
->gpio_control
);
1934 val64
|= 0x0000800000000000ULL
;
1935 writeq(val64
, &bar0
->gpio_control
);
1936 val64
= 0x0411040400000000ULL
;
1937 writeq(val64
, (void __iomem
*) ((u8
*) bar0
+ 0x2700));
1941 * Don't see link state interrupts on certain switches, so
1942 * directly scheduling a link state task from here.
1944 schedule_work(&nic
->set_link_task
);
1950 * free_tx_buffers - Free all queued Tx buffers
1951 * @nic : device private variable.
1953 * Free all queued Tx buffers.
1954 * Return Value: void
1957 static void free_tx_buffers(struct s2io_nic
*nic
)
1959 struct net_device
*dev
= nic
->dev
;
1960 struct sk_buff
*skb
;
1963 mac_info_t
*mac_control
;
1964 struct config_param
*config
;
1965 int cnt
= 0, frg_cnt
;
1967 mac_control
= &nic
->mac_control
;
1968 config
= &nic
->config
;
1970 for (i
= 0; i
< config
->tx_fifo_num
; i
++) {
1971 for (j
= 0; j
< config
->tx_cfg
[i
].fifo_len
- 1; j
++) {
1972 txdp
= (TxD_t
*) mac_control
->fifos
[i
].list_info
[j
].
1975 (struct sk_buff
*) ((unsigned long) txdp
->
1978 memset(txdp
, 0, sizeof(TxD_t
) *
1982 frg_cnt
= skb_shinfo(skb
)->nr_frags
;
1983 pci_unmap_single(nic
->pdev
, (dma_addr_t
)
1984 txdp
->Buffer_Pointer
,
1985 skb
->len
- skb
->data_len
,
1991 for (j
= 0; j
< frg_cnt
; j
++, txdp
++) {
1993 &skb_shinfo(skb
)->frags
[j
];
1994 pci_unmap_page(nic
->pdev
,
2004 memset(txdp
, 0, sizeof(TxD_t
) * config
->max_txds
);
2008 "%s:forcibly freeing %d skbs on FIFO%d\n",
2010 mac_control
->fifos
[i
].tx_curr_get_info
.offset
= 0;
2011 mac_control
->fifos
[i
].tx_curr_put_info
.offset
= 0;
2016 * stop_nic - To stop the nic
2017 * @nic ; device private variable.
2019 * This function does exactly the opposite of what the start_nic()
2020 * function does. This function is called to stop the device.
2025 static void stop_nic(struct s2io_nic
*nic
)
2027 XENA_dev_config_t __iomem
*bar0
= nic
->bar0
;
2028 register u64 val64
= 0;
2029 u16 interruptible
, i
;
2030 mac_info_t
*mac_control
;
2031 struct config_param
*config
;
2033 mac_control
= &nic
->mac_control
;
2034 config
= &nic
->config
;
2036 /* Disable all interrupts */
2037 interruptible
= TX_TRAFFIC_INTR
| RX_TRAFFIC_INTR
;
2038 interruptible
|= TX_PIC_INTR
| RX_PIC_INTR
;
2039 interruptible
|= TX_MAC_INTR
| RX_MAC_INTR
;
2040 en_dis_able_nic_intrs(nic
, interruptible
, DISABLE_INTRS
);
2043 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
2044 val64
= readq(&bar0
->prc_ctrl_n
[i
]);
2045 val64
&= ~((u64
) PRC_CTRL_RC_ENABLED
);
2046 writeq(val64
, &bar0
->prc_ctrl_n
[i
]);
2051 * fill_rx_buffers - Allocates the Rx side skbs
2052 * @nic: device private variable
2053 * @ring_no: ring number
2055 * The function allocates Rx side skbs and puts the physical
2056 * address of these buffers into the RxD buffer pointers, so that the NIC
2057 * can DMA the received frame into these locations.
2058 * The NIC supports 3 receive modes, viz
2060 * 2. three buffer and
2061 * 3. Five buffer modes.
2062 * Each mode defines how many fragments the received frame will be split
2063 * up into by the NIC. The frame is split into L3 header, L4 Header,
2064 * L4 payload in three buffer mode and in 5 buffer mode, L4 payload itself
2065 * is split into 3 fragments. As of now only single buffer mode is
2068 * SUCCESS on success or an appropriate -ve value on failure.
2071 int fill_rx_buffers(struct s2io_nic
*nic
, int ring_no
)
2073 struct net_device
*dev
= nic
->dev
;
2074 struct sk_buff
*skb
;
2076 int off
, off1
, size
, block_no
, block_no1
;
2077 int offset
, offset1
;
2080 mac_info_t
*mac_control
;
2081 struct config_param
*config
;
2082 #ifdef CONFIG_2BUFF_MODE
2087 dma_addr_t rxdpphys
;
2089 #ifndef CONFIG_S2IO_NAPI
2090 unsigned long flags
;
2092 RxD_t
*first_rxdp
= NULL
;
2094 mac_control
= &nic
->mac_control
;
2095 config
= &nic
->config
;
2096 alloc_cnt
= mac_control
->rings
[ring_no
].pkt_cnt
-
2097 atomic_read(&nic
->rx_bufs_left
[ring_no
]);
2098 size
= dev
->mtu
+ HEADER_ETHERNET_II_802_3_SIZE
+
2099 HEADER_802_2_SIZE
+ HEADER_SNAP_SIZE
;
2101 while (alloc_tab
< alloc_cnt
) {
2102 block_no
= mac_control
->rings
[ring_no
].rx_curr_put_info
.
2104 block_no1
= mac_control
->rings
[ring_no
].rx_curr_get_info
.
2106 off
= mac_control
->rings
[ring_no
].rx_curr_put_info
.offset
;
2107 off1
= mac_control
->rings
[ring_no
].rx_curr_get_info
.offset
;
2108 #ifndef CONFIG_2BUFF_MODE
2109 offset
= block_no
* (MAX_RXDS_PER_BLOCK
+ 1) + off
;
2110 offset1
= block_no1
* (MAX_RXDS_PER_BLOCK
+ 1) + off1
;
2112 offset
= block_no
* (MAX_RXDS_PER_BLOCK
) + off
;
2113 offset1
= block_no1
* (MAX_RXDS_PER_BLOCK
) + off1
;
2116 rxdp
= mac_control
->rings
[ring_no
].rx_blocks
[block_no
].
2117 block_virt_addr
+ off
;
2118 if ((offset
== offset1
) && (rxdp
->Host_Control
)) {
2119 DBG_PRINT(INTR_DBG
, "%s: Get and Put", dev
->name
);
2120 DBG_PRINT(INTR_DBG
, " info equated\n");
2123 #ifndef CONFIG_2BUFF_MODE
2124 if (rxdp
->Control_1
== END_OF_BLOCK
) {
2125 mac_control
->rings
[ring_no
].rx_curr_put_info
.
2127 mac_control
->rings
[ring_no
].rx_curr_put_info
.
2128 block_index
%= mac_control
->rings
[ring_no
].block_count
;
2129 block_no
= mac_control
->rings
[ring_no
].rx_curr_put_info
.
2132 off
%= (MAX_RXDS_PER_BLOCK
+ 1);
2133 mac_control
->rings
[ring_no
].rx_curr_put_info
.offset
=
2135 rxdp
= (RxD_t
*) ((unsigned long) rxdp
->Control_2
);
2136 DBG_PRINT(INTR_DBG
, "%s: Next block at: %p\n",
2139 #ifndef CONFIG_S2IO_NAPI
2140 spin_lock_irqsave(&nic
->put_lock
, flags
);
2141 mac_control
->rings
[ring_no
].put_pos
=
2142 (block_no
* (MAX_RXDS_PER_BLOCK
+ 1)) + off
;
2143 spin_unlock_irqrestore(&nic
->put_lock
, flags
);
2146 if (rxdp
->Host_Control
== END_OF_BLOCK
) {
2147 mac_control
->rings
[ring_no
].rx_curr_put_info
.
2149 mac_control
->rings
[ring_no
].rx_curr_put_info
.block_index
2150 %= mac_control
->rings
[ring_no
].block_count
;
2151 block_no
= mac_control
->rings
[ring_no
].rx_curr_put_info
2154 DBG_PRINT(INTR_DBG
, "%s: block%d at: 0x%llx\n",
2155 dev
->name
, block_no
,
2156 (unsigned long long) rxdp
->Control_1
);
2157 mac_control
->rings
[ring_no
].rx_curr_put_info
.offset
=
2159 rxdp
= mac_control
->rings
[ring_no
].rx_blocks
[block_no
].
2162 #ifndef CONFIG_S2IO_NAPI
2163 spin_lock_irqsave(&nic
->put_lock
, flags
);
2164 mac_control
->rings
[ring_no
].put_pos
= (block_no
*
2165 (MAX_RXDS_PER_BLOCK
+ 1)) + off
;
2166 spin_unlock_irqrestore(&nic
->put_lock
, flags
);
2170 #ifndef CONFIG_2BUFF_MODE
2171 if (rxdp
->Control_1
& RXD_OWN_XENA
)
2173 if (rxdp
->Control_2
& BIT(0))
2176 mac_control
->rings
[ring_no
].rx_curr_put_info
.
2180 #ifdef CONFIG_2BUFF_MODE
2182 * RxDs Spanning cache lines will be replenished only
2183 * if the succeeding RxD is also owned by Host. It
2184 * will always be the ((8*i)+3) and ((8*i)+6)
2185 * descriptors for the 48 byte descriptor. The offending
2186 * decsriptor is of-course the 3rd descriptor.
2188 rxdpphys
= mac_control
->rings
[ring_no
].rx_blocks
[block_no
].
2189 block_dma_addr
+ (off
* sizeof(RxD_t
));
2190 if (((u64
) (rxdpphys
)) % 128 > 80) {
2191 rxdpnext
= mac_control
->rings
[ring_no
].rx_blocks
[block_no
].
2192 block_virt_addr
+ (off
+ 1);
2193 if (rxdpnext
->Host_Control
== END_OF_BLOCK
) {
2194 nextblk
= (block_no
+ 1) %
2195 (mac_control
->rings
[ring_no
].block_count
);
2196 rxdpnext
= mac_control
->rings
[ring_no
].rx_blocks
2197 [nextblk
].block_virt_addr
;
2199 if (rxdpnext
->Control_2
& BIT(0))
2204 #ifndef CONFIG_2BUFF_MODE
2205 skb
= dev_alloc_skb(size
+ NET_IP_ALIGN
);
2207 skb
= dev_alloc_skb(dev
->mtu
+ ALIGN_SIZE
+ BUF0_LEN
+ 4);
2210 DBG_PRINT(ERR_DBG
, "%s: Out of ", dev
->name
);
2211 DBG_PRINT(ERR_DBG
, "memory to allocate SKBs\n");
2214 first_rxdp
->Control_1
|= RXD_OWN_XENA
;
2218 #ifndef CONFIG_2BUFF_MODE
2219 skb_reserve(skb
, NET_IP_ALIGN
);
2220 memset(rxdp
, 0, sizeof(RxD_t
));
2221 rxdp
->Buffer0_ptr
= pci_map_single
2222 (nic
->pdev
, skb
->data
, size
, PCI_DMA_FROMDEVICE
);
2223 rxdp
->Control_2
&= (~MASK_BUFFER0_SIZE
);
2224 rxdp
->Control_2
|= SET_BUFFER0_SIZE(size
);
2225 rxdp
->Host_Control
= (unsigned long) (skb
);
2226 if (alloc_tab
& ((1 << rxsync_frequency
) - 1))
2227 rxdp
->Control_1
|= RXD_OWN_XENA
;
2229 off
%= (MAX_RXDS_PER_BLOCK
+ 1);
2230 mac_control
->rings
[ring_no
].rx_curr_put_info
.offset
= off
;
2232 ba
= &mac_control
->rings
[ring_no
].ba
[block_no
][off
];
2233 skb_reserve(skb
, BUF0_LEN
);
2234 tmp
= ((unsigned long) skb
->data
& ALIGN_SIZE
);
2236 skb_reserve(skb
, (ALIGN_SIZE
+ 1) - tmp
);
2238 memset(rxdp
, 0, sizeof(RxD_t
));
2239 rxdp
->Buffer2_ptr
= pci_map_single
2240 (nic
->pdev
, skb
->data
, dev
->mtu
+ BUF0_LEN
+ 4,
2241 PCI_DMA_FROMDEVICE
);
2243 pci_map_single(nic
->pdev
, ba
->ba_0
, BUF0_LEN
,
2244 PCI_DMA_FROMDEVICE
);
2246 pci_map_single(nic
->pdev
, ba
->ba_1
, BUF1_LEN
,
2247 PCI_DMA_FROMDEVICE
);
2249 rxdp
->Control_2
= SET_BUFFER2_SIZE(dev
->mtu
+ 4);
2250 rxdp
->Control_2
|= SET_BUFFER0_SIZE(BUF0_LEN
);
2251 rxdp
->Control_2
|= SET_BUFFER1_SIZE(1); /* dummy. */
2252 rxdp
->Control_2
|= BIT(0); /* Set Buffer_Empty bit. */
2253 rxdp
->Host_Control
= (u64
) ((unsigned long) (skb
));
2254 if (alloc_tab
& ((1 << rxsync_frequency
) - 1))
2255 rxdp
->Control_1
|= RXD_OWN_XENA
;
2257 mac_control
->rings
[ring_no
].rx_curr_put_info
.offset
= off
;
2259 rxdp
->Control_2
|= SET_RXD_MARKER
;
2261 if (!(alloc_tab
& ((1 << rxsync_frequency
) - 1))) {
2264 first_rxdp
->Control_1
|= RXD_OWN_XENA
;
2268 atomic_inc(&nic
->rx_bufs_left
[ring_no
]);
2273 /* Transfer ownership of first descriptor to adapter just before
2274 * exiting. Before that, use memory barrier so that ownership
2275 * and other fields are seen by adapter correctly.
2279 first_rxdp
->Control_1
|= RXD_OWN_XENA
;
2286 * free_rx_buffers - Frees all Rx buffers
2287 * @sp: device private variable.
2289 * This function will free all Rx buffers allocated by host.
2294 static void free_rx_buffers(struct s2io_nic
*sp
)
2296 struct net_device
*dev
= sp
->dev
;
2297 int i
, j
, blk
= 0, off
, buf_cnt
= 0;
2299 struct sk_buff
*skb
;
2300 mac_info_t
*mac_control
;
2301 struct config_param
*config
;
2302 #ifdef CONFIG_2BUFF_MODE
2306 mac_control
= &sp
->mac_control
;
2307 config
= &sp
->config
;
2309 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
2310 for (j
= 0, blk
= 0; j
< config
->rx_cfg
[i
].num_rxd
; j
++) {
2311 off
= j
% (MAX_RXDS_PER_BLOCK
+ 1);
2312 rxdp
= mac_control
->rings
[i
].rx_blocks
[blk
].
2313 block_virt_addr
+ off
;
2315 #ifndef CONFIG_2BUFF_MODE
2316 if (rxdp
->Control_1
== END_OF_BLOCK
) {
2318 (RxD_t
*) ((unsigned long) rxdp
->
2324 if (rxdp
->Host_Control
== END_OF_BLOCK
) {
2330 if (!(rxdp
->Control_1
& RXD_OWN_XENA
)) {
2331 memset(rxdp
, 0, sizeof(RxD_t
));
2336 (struct sk_buff
*) ((unsigned long) rxdp
->
2339 #ifndef CONFIG_2BUFF_MODE
2340 pci_unmap_single(sp
->pdev
, (dma_addr_t
)
2343 HEADER_ETHERNET_II_802_3_SIZE
2344 + HEADER_802_2_SIZE
+
2346 PCI_DMA_FROMDEVICE
);
2348 ba
= &mac_control
->rings
[i
].ba
[blk
][off
];
2349 pci_unmap_single(sp
->pdev
, (dma_addr_t
)
2352 PCI_DMA_FROMDEVICE
);
2353 pci_unmap_single(sp
->pdev
, (dma_addr_t
)
2356 PCI_DMA_FROMDEVICE
);
2357 pci_unmap_single(sp
->pdev
, (dma_addr_t
)
2359 dev
->mtu
+ BUF0_LEN
+ 4,
2360 PCI_DMA_FROMDEVICE
);
2363 atomic_dec(&sp
->rx_bufs_left
[i
]);
2366 memset(rxdp
, 0, sizeof(RxD_t
));
2368 mac_control
->rings
[i
].rx_curr_put_info
.block_index
= 0;
2369 mac_control
->rings
[i
].rx_curr_get_info
.block_index
= 0;
2370 mac_control
->rings
[i
].rx_curr_put_info
.offset
= 0;
2371 mac_control
->rings
[i
].rx_curr_get_info
.offset
= 0;
2372 atomic_set(&sp
->rx_bufs_left
[i
], 0);
2373 DBG_PRINT(INIT_DBG
, "%s:Freed 0x%x Rx Buffers on ring%d\n",
2374 dev
->name
, buf_cnt
, i
);
2379 * s2io_poll - Rx interrupt handler for NAPI support
2380 * @dev : pointer to the device structure.
2381 * @budget : The number of packets that were budgeted to be processed
2382 * during one pass through the 'Poll" function.
2384 * Comes into picture only if NAPI support has been incorporated. It does
2385 * the same thing that rx_intr_handler does, but not in a interrupt context
2386 * also It will process only a given number of packets.
2388 * 0 on success and 1 if there are No Rx packets to be processed.
2391 #if defined(CONFIG_S2IO_NAPI)
2392 static int s2io_poll(struct net_device
*dev
, int *budget
)
2394 nic_t
*nic
= dev
->priv
;
2395 int pkt_cnt
= 0, org_pkts_to_process
;
2396 mac_info_t
*mac_control
;
2397 struct config_param
*config
;
2398 XENA_dev_config_t
*bar0
= (XENA_dev_config_t
*) nic
->bar0
;
2402 atomic_inc(&nic
->isr_cnt
);
2403 mac_control
= &nic
->mac_control
;
2404 config
= &nic
->config
;
2406 nic
->pkts_to_process
= *budget
;
2407 if (nic
->pkts_to_process
> dev
->quota
)
2408 nic
->pkts_to_process
= dev
->quota
;
2409 org_pkts_to_process
= nic
->pkts_to_process
;
2411 val64
= readq(&bar0
->rx_traffic_int
);
2412 writeq(val64
, &bar0
->rx_traffic_int
);
2414 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
2415 rx_intr_handler(&mac_control
->rings
[i
]);
2416 pkt_cnt
= org_pkts_to_process
- nic
->pkts_to_process
;
2417 if (!nic
->pkts_to_process
) {
2418 /* Quota for the current iteration has been met */
2425 dev
->quota
-= pkt_cnt
;
2427 netif_rx_complete(dev
);
2429 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
2430 if (fill_rx_buffers(nic
, i
) == -ENOMEM
) {
2431 DBG_PRINT(ERR_DBG
, "%s:Out of memory", dev
->name
);
2432 DBG_PRINT(ERR_DBG
, " in Rx Poll!!\n");
2436 /* Re enable the Rx interrupts. */
2437 en_dis_able_nic_intrs(nic
, RX_TRAFFIC_INTR
, ENABLE_INTRS
);
2438 atomic_dec(&nic
->isr_cnt
);
2442 dev
->quota
-= pkt_cnt
;
2445 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
2446 if (fill_rx_buffers(nic
, i
) == -ENOMEM
) {
2447 DBG_PRINT(ERR_DBG
, "%s:Out of memory", dev
->name
);
2448 DBG_PRINT(ERR_DBG
, " in Rx Poll!!\n");
2452 atomic_dec(&nic
->isr_cnt
);
2458 * rx_intr_handler - Rx interrupt handler
2459 * @nic: device private variable.
2461 * If the interrupt is because of a received frame or if the
2462 * receive ring contains fresh as yet un-processed frames,this function is
2463 * called. It picks out the RxD at which place the last Rx processing had
2464 * stopped and sends the skb to the OSM's Rx handler and then increments
2469 static void rx_intr_handler(ring_info_t
*ring_data
)
2471 nic_t
*nic
= ring_data
->nic
;
2472 struct net_device
*dev
= (struct net_device
*) nic
->dev
;
2473 int get_block
, get_offset
, put_block
, put_offset
, ring_bufs
;
2474 rx_curr_get_info_t get_info
, put_info
;
2476 struct sk_buff
*skb
;
2477 #ifndef CONFIG_S2IO_NAPI
2480 spin_lock(&nic
->rx_lock
);
2481 if (atomic_read(&nic
->card_state
) == CARD_DOWN
) {
2482 DBG_PRINT(ERR_DBG
, "%s: %s going down for reset\n",
2483 __FUNCTION__
, dev
->name
);
2484 spin_unlock(&nic
->rx_lock
);
2487 get_info
= ring_data
->rx_curr_get_info
;
2488 get_block
= get_info
.block_index
;
2489 put_info
= ring_data
->rx_curr_put_info
;
2490 put_block
= put_info
.block_index
;
2491 ring_bufs
= get_info
.ring_len
+1;
2492 rxdp
= ring_data
->rx_blocks
[get_block
].block_virt_addr
+
2494 get_offset
= (get_block
* (MAX_RXDS_PER_BLOCK
+ 1)) +
2496 #ifndef CONFIG_S2IO_NAPI
2497 spin_lock(&nic
->put_lock
);
2498 put_offset
= ring_data
->put_pos
;
2499 spin_unlock(&nic
->put_lock
);
2501 put_offset
= (put_block
* (MAX_RXDS_PER_BLOCK
+ 1)) +
2504 while (RXD_IS_UP2DT(rxdp
) &&
2505 (((get_offset
+ 1) % ring_bufs
) != put_offset
)) {
2506 skb
= (struct sk_buff
*) ((unsigned long)rxdp
->Host_Control
);
2508 DBG_PRINT(ERR_DBG
, "%s: The skb is ",
2510 DBG_PRINT(ERR_DBG
, "Null in Rx Intr\n");
2511 spin_unlock(&nic
->rx_lock
);
2514 #ifndef CONFIG_2BUFF_MODE
2515 pci_unmap_single(nic
->pdev
, (dma_addr_t
)
2518 HEADER_ETHERNET_II_802_3_SIZE
+
2521 PCI_DMA_FROMDEVICE
);
2523 pci_unmap_single(nic
->pdev
, (dma_addr_t
)
2525 BUF0_LEN
, PCI_DMA_FROMDEVICE
);
2526 pci_unmap_single(nic
->pdev
, (dma_addr_t
)
2528 BUF1_LEN
, PCI_DMA_FROMDEVICE
);
2529 pci_unmap_single(nic
->pdev
, (dma_addr_t
)
2531 dev
->mtu
+ BUF0_LEN
+ 4,
2532 PCI_DMA_FROMDEVICE
);
2534 rx_osm_handler(ring_data
, rxdp
);
2536 ring_data
->rx_curr_get_info
.offset
=
2538 rxdp
= ring_data
->rx_blocks
[get_block
].block_virt_addr
+
2540 if (get_info
.offset
&&
2541 (!(get_info
.offset
% MAX_RXDS_PER_BLOCK
))) {
2542 get_info
.offset
= 0;
2543 ring_data
->rx_curr_get_info
.offset
2546 get_block
%= ring_data
->block_count
;
2547 ring_data
->rx_curr_get_info
.block_index
2549 rxdp
= ring_data
->rx_blocks
[get_block
].block_virt_addr
;
2552 get_offset
= (get_block
* (MAX_RXDS_PER_BLOCK
+ 1)) +
2554 #ifdef CONFIG_S2IO_NAPI
2555 nic
->pkts_to_process
-= 1;
2556 if (!nic
->pkts_to_process
)
2560 if ((indicate_max_pkts
) && (pkt_cnt
> indicate_max_pkts
))
2564 spin_unlock(&nic
->rx_lock
);
2568 * tx_intr_handler - Transmit interrupt handler
2569 * @nic : device private variable
2571 * If an interrupt was raised to indicate DMA complete of the
2572 * Tx packet, this function is called. It identifies the last TxD
2573 * whose buffer was freed and frees all skbs whose data have already
2574 * DMA'ed into the NICs internal memory.
2579 static void tx_intr_handler(fifo_info_t
*fifo_data
)
2581 nic_t
*nic
= fifo_data
->nic
;
2582 struct net_device
*dev
= (struct net_device
*) nic
->dev
;
2583 tx_curr_get_info_t get_info
, put_info
;
2584 struct sk_buff
*skb
;
2588 get_info
= fifo_data
->tx_curr_get_info
;
2589 put_info
= fifo_data
->tx_curr_put_info
;
2590 txdlp
= (TxD_t
*) fifo_data
->list_info
[get_info
.offset
].
2592 while ((!(txdlp
->Control_1
& TXD_LIST_OWN_XENA
)) &&
2593 (get_info
.offset
!= put_info
.offset
) &&
2594 (txdlp
->Host_Control
)) {
2595 /* Check for TxD errors */
2596 if (txdlp
->Control_1
& TXD_T_CODE
) {
2597 unsigned long long err
;
2598 err
= txdlp
->Control_1
& TXD_T_CODE
;
2599 DBG_PRINT(ERR_DBG
, "***TxD error %llx\n",
2603 skb
= (struct sk_buff
*) ((unsigned long)
2604 txdlp
->Host_Control
);
2606 DBG_PRINT(ERR_DBG
, "%s: Null skb ",
2608 DBG_PRINT(ERR_DBG
, "in Tx Free Intr\n");
2612 frg_cnt
= skb_shinfo(skb
)->nr_frags
;
2613 nic
->tx_pkt_count
++;
2615 pci_unmap_single(nic
->pdev
, (dma_addr_t
)
2616 txdlp
->Buffer_Pointer
,
2617 skb
->len
- skb
->data_len
,
2623 for (j
= 0; j
< frg_cnt
; j
++, txdlp
++) {
2625 &skb_shinfo(skb
)->frags
[j
];
2626 if (!txdlp
->Buffer_Pointer
)
2628 pci_unmap_page(nic
->pdev
,
2638 (sizeof(TxD_t
) * fifo_data
->max_txds
));
2640 /* Updating the statistics block */
2641 nic
->stats
.tx_bytes
+= skb
->len
;
2642 dev_kfree_skb_irq(skb
);
2645 get_info
.offset
%= get_info
.fifo_len
+ 1;
2646 txdlp
= (TxD_t
*) fifo_data
->list_info
2647 [get_info
.offset
].list_virt_addr
;
2648 fifo_data
->tx_curr_get_info
.offset
=
2652 spin_lock(&nic
->tx_lock
);
2653 if (netif_queue_stopped(dev
))
2654 netif_wake_queue(dev
);
2655 spin_unlock(&nic
->tx_lock
);
2659 * alarm_intr_handler - Alarm Interrrupt handler
2660 * @nic: device private variable
2661 * Description: If the interrupt was neither because of Rx packet or Tx
2662 * complete, this function is called. If the interrupt was to indicate
2663 * a loss of link, the OSM link status handler is invoked for any other
2664 * alarm interrupt the block that raised the interrupt is displayed
2665 * and a H/W reset is issued.
2670 static void alarm_intr_handler(struct s2io_nic
*nic
)
2672 struct net_device
*dev
= (struct net_device
*) nic
->dev
;
2673 XENA_dev_config_t __iomem
*bar0
= nic
->bar0
;
2674 register u64 val64
= 0, err_reg
= 0;
2676 /* Handling link status change error Intr */
2677 if (s2io_link_fault_indication(nic
) == MAC_RMAC_ERR_TIMER
) {
2678 err_reg
= readq(&bar0
->mac_rmac_err_reg
);
2679 writeq(err_reg
, &bar0
->mac_rmac_err_reg
);
2680 if (err_reg
& RMAC_LINK_STATE_CHANGE_INT
) {
2681 schedule_work(&nic
->set_link_task
);
2685 /* Handling Ecc errors */
2686 val64
= readq(&bar0
->mc_err_reg
);
2687 writeq(val64
, &bar0
->mc_err_reg
);
2688 if (val64
& (MC_ERR_REG_ECC_ALL_SNG
| MC_ERR_REG_ECC_ALL_DBL
)) {
2689 if (val64
& MC_ERR_REG_ECC_ALL_DBL
) {
2690 nic
->mac_control
.stats_info
->sw_stat
.
2692 DBG_PRINT(ERR_DBG
, "%s: Device indicates ",
2694 DBG_PRINT(ERR_DBG
, "double ECC error!!\n");
2695 if (nic
->device_type
!= XFRAME_II_DEVICE
) {
2696 netif_stop_queue(dev
);
2697 schedule_work(&nic
->rst_timer_task
);
2700 nic
->mac_control
.stats_info
->sw_stat
.
2705 /* In case of a serious error, the device will be Reset. */
2706 val64
= readq(&bar0
->serr_source
);
2707 if (val64
& SERR_SOURCE_ANY
) {
2708 DBG_PRINT(ERR_DBG
, "%s: Device indicates ", dev
->name
);
2709 DBG_PRINT(ERR_DBG
, "serious error!!\n");
2710 netif_stop_queue(dev
);
2711 schedule_work(&nic
->rst_timer_task
);
2715 * Also as mentioned in the latest Errata sheets if the PCC_FB_ECC
2716 * Error occurs, the adapter will be recycled by disabling the
2717 * adapter enable bit and enabling it again after the device
2718 * becomes Quiescent.
2720 val64
= readq(&bar0
->pcc_err_reg
);
2721 writeq(val64
, &bar0
->pcc_err_reg
);
2722 if (val64
& PCC_FB_ECC_DB_ERR
) {
2723 u64 ac
= readq(&bar0
->adapter_control
);
2724 ac
&= ~(ADAPTER_CNTL_EN
);
2725 writeq(ac
, &bar0
->adapter_control
);
2726 ac
= readq(&bar0
->adapter_control
);
2727 schedule_work(&nic
->set_link_task
);
2730 /* Other type of interrupts are not being handled now, TODO */
2734 * wait_for_cmd_complete - waits for a command to complete.
2735 * @sp : private member of the device structure, which is a pointer to the
2736 * s2io_nic structure.
2737 * Description: Function that waits for a command to Write into RMAC
2738 * ADDR DATA registers to be completed and returns either success or
2739 * error depending on whether the command was complete or not.
2741 * SUCCESS on success and FAILURE on failure.
2744 int wait_for_cmd_complete(nic_t
* sp
)
2746 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
2747 int ret
= FAILURE
, cnt
= 0;
2751 val64
= readq(&bar0
->rmac_addr_cmd_mem
);
2752 if (!(val64
& RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING
)) {
2765 * s2io_reset - Resets the card.
2766 * @sp : private member of the device structure.
2767 * Description: Function to Reset the card. This function then also
2768 * restores the previously saved PCI configuration space registers as
2769 * the card reset also resets the configuration space.
2774 void s2io_reset(nic_t
* sp
)
2776 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
2780 /* Back up the PCI-X CMD reg, dont want to lose MMRBC, OST settings */
2781 pci_read_config_word(sp
->pdev
, PCIX_COMMAND_REGISTER
, &(pci_cmd
));
2783 val64
= SW_RESET_ALL
;
2784 writeq(val64
, &bar0
->sw_reset
);
2787 * At this stage, if the PCI write is indeed completed, the
2788 * card is reset and so is the PCI Config space of the device.
2789 * So a read cannot be issued at this stage on any of the
2790 * registers to ensure the write into "sw_reset" register
2792 * Question: Is there any system call that will explicitly force
2793 * all the write commands still pending on the bus to be pushed
2795 * As of now I'am just giving a 250ms delay and hoping that the
2796 * PCI write to sw_reset register is done by this time.
2800 /* Restore the PCI state saved during initialization. */
2801 pci_restore_state(sp
->pdev
);
2802 pci_write_config_word(sp
->pdev
, PCIX_COMMAND_REGISTER
,
2808 /* Set swapper to enable I/O register access */
2809 s2io_set_swapper(sp
);
2811 /* Clear certain PCI/PCI-X fields after reset */
2812 if (sp
->device_type
== XFRAME_II_DEVICE
) {
2813 /* Clear parity err detect bit */
2814 pci_write_config_word(sp
->pdev
, PCI_STATUS
, 0x8000);
2816 /* Clearing PCIX Ecc status register */
2817 pci_write_config_dword(sp
->pdev
, 0x68, 0x7C);
2819 /* Clearing PCI_STATUS error reflected here */
2820 writeq(BIT(62), &bar0
->txpic_int_reg
);
2823 /* Reset device statistics maintained by OS */
2824 memset(&sp
->stats
, 0, sizeof (struct net_device_stats
));
2826 /* SXE-002: Configure link and activity LED to turn it off */
2827 subid
= sp
->pdev
->subsystem_device
;
2828 if (((subid
& 0xFF) >= 0x07) &&
2829 (sp
->device_type
== XFRAME_I_DEVICE
)) {
2830 val64
= readq(&bar0
->gpio_control
);
2831 val64
|= 0x0000800000000000ULL
;
2832 writeq(val64
, &bar0
->gpio_control
);
2833 val64
= 0x0411040400000000ULL
;
2834 writeq(val64
, (void __iomem
*) ((u8
*) bar0
+ 0x2700));
2838 * Clear spurious ECC interrupts that would have occured on
2839 * XFRAME II cards after reset.
2841 if (sp
->device_type
== XFRAME_II_DEVICE
) {
2842 val64
= readq(&bar0
->pcc_err_reg
);
2843 writeq(val64
, &bar0
->pcc_err_reg
);
2846 sp
->device_enabled_once
= FALSE
;
2850 * s2io_set_swapper - to set the swapper controle on the card
2851 * @sp : private member of the device structure,
2852 * pointer to the s2io_nic structure.
2853 * Description: Function to set the swapper control on the card
2854 * correctly depending on the 'endianness' of the system.
2856 * SUCCESS on success and FAILURE on failure.
2859 int s2io_set_swapper(nic_t
* sp
)
2861 struct net_device
*dev
= sp
->dev
;
2862 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
2863 u64 val64
, valt
, valr
;
2866 * Set proper endian settings and verify the same by reading
2867 * the PIF Feed-back register.
2870 val64
= readq(&bar0
->pif_rd_swapper_fb
);
2871 if (val64
!= 0x0123456789ABCDEFULL
) {
2873 u64 value
[] = { 0xC30000C3C30000C3ULL
, /* FE=1, SE=1 */
2874 0x8100008181000081ULL
, /* FE=1, SE=0 */
2875 0x4200004242000042ULL
, /* FE=0, SE=1 */
2876 0}; /* FE=0, SE=0 */
2879 writeq(value
[i
], &bar0
->swapper_ctrl
);
2880 val64
= readq(&bar0
->pif_rd_swapper_fb
);
2881 if (val64
== 0x0123456789ABCDEFULL
)
2886 DBG_PRINT(ERR_DBG
, "%s: Endian settings are wrong, ",
2888 DBG_PRINT(ERR_DBG
, "feedback read %llx\n",
2889 (unsigned long long) val64
);
2894 valr
= readq(&bar0
->swapper_ctrl
);
2897 valt
= 0x0123456789ABCDEFULL
;
2898 writeq(valt
, &bar0
->xmsi_address
);
2899 val64
= readq(&bar0
->xmsi_address
);
2903 u64 value
[] = { 0x00C3C30000C3C300ULL
, /* FE=1, SE=1 */
2904 0x0081810000818100ULL
, /* FE=1, SE=0 */
2905 0x0042420000424200ULL
, /* FE=0, SE=1 */
2906 0}; /* FE=0, SE=0 */
2909 writeq((value
[i
] | valr
), &bar0
->swapper_ctrl
);
2910 writeq(valt
, &bar0
->xmsi_address
);
2911 val64
= readq(&bar0
->xmsi_address
);
2917 unsigned long long x
= val64
;
2918 DBG_PRINT(ERR_DBG
, "Write failed, Xmsi_addr ");
2919 DBG_PRINT(ERR_DBG
, "reads:0x%llx\n", x
);
2923 val64
= readq(&bar0
->swapper_ctrl
);
2924 val64
&= 0xFFFF000000000000ULL
;
2928 * The device by default set to a big endian format, so a
2929 * big endian driver need not set anything.
2931 val64
|= (SWAPPER_CTRL_TXP_FE
|
2932 SWAPPER_CTRL_TXP_SE
|
2933 SWAPPER_CTRL_TXD_R_FE
|
2934 SWAPPER_CTRL_TXD_W_FE
|
2935 SWAPPER_CTRL_TXF_R_FE
|
2936 SWAPPER_CTRL_RXD_R_FE
|
2937 SWAPPER_CTRL_RXD_W_FE
|
2938 SWAPPER_CTRL_RXF_W_FE
|
2939 SWAPPER_CTRL_XMSI_FE
|
2940 SWAPPER_CTRL_XMSI_SE
|
2941 SWAPPER_CTRL_STATS_FE
| SWAPPER_CTRL_STATS_SE
);
2942 writeq(val64
, &bar0
->swapper_ctrl
);
2945 * Initially we enable all bits to make it accessible by the
2946 * driver, then we selectively enable only those bits that
2949 val64
|= (SWAPPER_CTRL_TXP_FE
|
2950 SWAPPER_CTRL_TXP_SE
|
2951 SWAPPER_CTRL_TXD_R_FE
|
2952 SWAPPER_CTRL_TXD_R_SE
|
2953 SWAPPER_CTRL_TXD_W_FE
|
2954 SWAPPER_CTRL_TXD_W_SE
|
2955 SWAPPER_CTRL_TXF_R_FE
|
2956 SWAPPER_CTRL_RXD_R_FE
|
2957 SWAPPER_CTRL_RXD_R_SE
|
2958 SWAPPER_CTRL_RXD_W_FE
|
2959 SWAPPER_CTRL_RXD_W_SE
|
2960 SWAPPER_CTRL_RXF_W_FE
|
2961 SWAPPER_CTRL_XMSI_FE
|
2962 SWAPPER_CTRL_XMSI_SE
|
2963 SWAPPER_CTRL_STATS_FE
| SWAPPER_CTRL_STATS_SE
);
2964 writeq(val64
, &bar0
->swapper_ctrl
);
2966 val64
= readq(&bar0
->swapper_ctrl
);
2969 * Verifying if endian settings are accurate by reading a
2970 * feedback register.
2972 val64
= readq(&bar0
->pif_rd_swapper_fb
);
2973 if (val64
!= 0x0123456789ABCDEFULL
) {
2974 /* Endian settings are incorrect, calls for another dekko. */
2975 DBG_PRINT(ERR_DBG
, "%s: Endian settings are wrong, ",
2977 DBG_PRINT(ERR_DBG
, "feedback read %llx\n",
2978 (unsigned long long) val64
);
2985 /* ********************************************************* *
2986 * Functions defined below concern the OS part of the driver *
2987 * ********************************************************* */
2990 * s2io_open - open entry point of the driver
2991 * @dev : pointer to the device structure.
2993 * This function is the open entry point of the driver. It mainly calls a
2994 * function to allocate Rx buffers and inserts them into the buffer
2995 * descriptors and then enables the Rx part of the NIC.
2997 * 0 on success and an appropriate (-)ve integer as defined in errno.h
3001 int s2io_open(struct net_device
*dev
)
3003 nic_t
*sp
= dev
->priv
;
3007 * Make sure you have link off by default every time
3008 * Nic is initialized
3010 netif_carrier_off(dev
);
3011 sp
->last_link_state
= 0;
3013 /* Initialize H/W and enable interrupts */
3014 if (s2io_card_up(sp
)) {
3015 DBG_PRINT(ERR_DBG
, "%s: H/W initialization failed\n",
3018 goto hw_init_failed
;
3021 /* After proper initialization of H/W, register ISR */
3022 err
= request_irq((int) sp
->pdev
->irq
, s2io_isr
, SA_SHIRQ
,
3025 DBG_PRINT(ERR_DBG
, "%s: ISR registration failed\n",
3027 goto isr_registration_failed
;
3030 if (s2io_set_mac_addr(dev
, dev
->dev_addr
) == FAILURE
) {
3031 DBG_PRINT(ERR_DBG
, "Set Mac Address Failed\n");
3033 goto setting_mac_address_failed
;
3036 netif_start_queue(dev
);
3039 setting_mac_address_failed
:
3040 free_irq(sp
->pdev
->irq
, dev
);
3041 isr_registration_failed
:
3042 del_timer_sync(&sp
->alarm_timer
);
3049 * s2io_close -close entry point of the driver
3050 * @dev : device pointer.
3052 * This is the stop entry point of the driver. It needs to undo exactly
3053 * whatever was done by the open entry point,thus it's usually referred to
3054 * as the close function.Among other things this function mainly stops the
3055 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3057 * 0 on success and an appropriate (-)ve integer as defined in errno.h
3061 int s2io_close(struct net_device
*dev
)
3063 nic_t
*sp
= dev
->priv
;
3064 flush_scheduled_work();
3065 netif_stop_queue(dev
);
3066 /* Reset card, kill tasklet and free Tx and Rx buffers. */
3069 free_irq(sp
->pdev
->irq
, dev
);
3070 sp
->device_close_flag
= TRUE
; /* Device is shut down. */
3075 * s2io_xmit - Tx entry point of te driver
3076 * @skb : the socket buffer containing the Tx data.
3077 * @dev : device pointer.
3079 * This function is the Tx entry point of the driver. S2IO NIC supports
3080 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
3081 * NOTE: when device cant queue the pkt,just the trans_start variable will
3084 * 0 on success & 1 on failure.
3087 int s2io_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
3089 nic_t
*sp
= dev
->priv
;
3090 u16 frg_cnt
, frg_len
, i
, queue
, queue_len
, put_off
, get_off
;
3093 TxFIFO_element_t __iomem
*tx_fifo
;
3094 unsigned long flags
;
3099 int vlan_priority
= 0;
3100 mac_info_t
*mac_control
;
3101 struct config_param
*config
;
3103 mac_control
= &sp
->mac_control
;
3104 config
= &sp
->config
;
3106 DBG_PRINT(TX_DBG
, "%s: In Neterion Tx routine\n", dev
->name
);
3107 spin_lock_irqsave(&sp
->tx_lock
, flags
);
3108 if (atomic_read(&sp
->card_state
) == CARD_DOWN
) {
3109 DBG_PRINT(TX_DBG
, "%s: Card going down for reset\n",
3111 spin_unlock_irqrestore(&sp
->tx_lock
, flags
);
3118 /* Get Fifo number to Transmit based on vlan priority */
3119 if (sp
->vlgrp
&& vlan_tx_tag_present(skb
)) {
3120 vlan_tag
= vlan_tx_tag_get(skb
);
3121 vlan_priority
= vlan_tag
>> 13;
3122 queue
= config
->fifo_mapping
[vlan_priority
];
3125 put_off
= (u16
) mac_control
->fifos
[queue
].tx_curr_put_info
.offset
;
3126 get_off
= (u16
) mac_control
->fifos
[queue
].tx_curr_get_info
.offset
;
3127 txdp
= (TxD_t
*) mac_control
->fifos
[queue
].list_info
[put_off
].
3130 queue_len
= mac_control
->fifos
[queue
].tx_curr_put_info
.fifo_len
+ 1;
3131 /* Avoid "put" pointer going beyond "get" pointer */
3132 if (txdp
->Host_Control
|| (((put_off
+ 1) % queue_len
) == get_off
)) {
3133 DBG_PRINT(ERR_DBG
, "Error in xmit, No free TXDs.\n");
3134 netif_stop_queue(dev
);
3136 spin_unlock_irqrestore(&sp
->tx_lock
, flags
);
3140 /* A buffer with no data will be dropped */
3142 DBG_PRINT(TX_DBG
, "%s:Buffer has no data..\n", dev
->name
);
3144 spin_unlock_irqrestore(&sp
->tx_lock
, flags
);
3149 mss
= skb_shinfo(skb
)->tso_size
;
3151 txdp
->Control_1
|= TXD_TCP_LSO_EN
;
3152 txdp
->Control_1
|= TXD_TCP_LSO_MSS(mss
);
3156 frg_cnt
= skb_shinfo(skb
)->nr_frags
;
3157 frg_len
= skb
->len
- skb
->data_len
;
3159 txdp
->Buffer_Pointer
= pci_map_single
3160 (sp
->pdev
, skb
->data
, frg_len
, PCI_DMA_TODEVICE
);
3161 txdp
->Host_Control
= (unsigned long) skb
;
3162 if (skb
->ip_summed
== CHECKSUM_HW
) {
3164 (TXD_TX_CKO_IPV4_EN
| TXD_TX_CKO_TCP_EN
|
3168 txdp
->Control_2
|= config
->tx_intr_type
;
3170 if (sp
->vlgrp
&& vlan_tx_tag_present(skb
)) {
3171 txdp
->Control_2
|= TXD_VLAN_ENABLE
;
3172 txdp
->Control_2
|= TXD_VLAN_TAG(vlan_tag
);
3175 txdp
->Control_1
|= (TXD_BUFFER0_SIZE(frg_len
) |
3176 TXD_GATHER_CODE_FIRST
);
3177 txdp
->Control_1
|= TXD_LIST_OWN_XENA
;
3179 /* For fragmented SKB. */
3180 for (i
= 0; i
< frg_cnt
; i
++) {
3181 skb_frag_t
*frag
= &skb_shinfo(skb
)->frags
[i
];
3182 /* A '0' length fragment will be ignored */
3186 txdp
->Buffer_Pointer
= (u64
) pci_map_page
3187 (sp
->pdev
, frag
->page
, frag
->page_offset
,
3188 frag
->size
, PCI_DMA_TODEVICE
);
3189 txdp
->Control_1
|= TXD_BUFFER0_SIZE(frag
->size
);
3191 txdp
->Control_1
|= TXD_GATHER_CODE_LAST
;
3193 tx_fifo
= mac_control
->tx_FIFO_start
[queue
];
3194 val64
= mac_control
->fifos
[queue
].list_info
[put_off
].list_phy_addr
;
3195 writeq(val64
, &tx_fifo
->TxDL_Pointer
);
3197 val64
= (TX_FIFO_LAST_TXD_NUM(frg_cnt
) | TX_FIFO_FIRST_LIST
|
3202 val64
|= TX_FIFO_SPECIAL_FUNC
;
3204 writeq(val64
, &tx_fifo
->List_Control
);
3209 put_off
%= mac_control
->fifos
[queue
].tx_curr_put_info
.fifo_len
+ 1;
3210 mac_control
->fifos
[queue
].tx_curr_put_info
.offset
= put_off
;
3212 /* Avoid "put" pointer going beyond "get" pointer */
3213 if (((put_off
+ 1) % queue_len
) == get_off
) {
3215 "No free TxDs for xmit, Put: 0x%x Get:0x%x\n",
3217 netif_stop_queue(dev
);
3220 dev
->trans_start
= jiffies
;
3221 spin_unlock_irqrestore(&sp
->tx_lock
, flags
);
3227 s2io_alarm_handle(unsigned long data
)
3229 nic_t
*sp
= (nic_t
*)data
;
3231 alarm_intr_handler(sp
);
3232 mod_timer(&sp
->alarm_timer
, jiffies
+ HZ
/ 2);
3235 static void s2io_txpic_intr_handle(nic_t
*sp
)
3237 XENA_dev_config_t
*bar0
= (XENA_dev_config_t
*) sp
->bar0
;
3240 val64
= readq(&bar0
->pic_int_status
);
3241 if (val64
& PIC_INT_GPIO
) {
3242 val64
= readq(&bar0
->gpio_int_reg
);
3243 if ((val64
& GPIO_INT_REG_LINK_DOWN
) &&
3244 (val64
& GPIO_INT_REG_LINK_UP
)) {
3245 val64
|= GPIO_INT_REG_LINK_DOWN
;
3246 val64
|= GPIO_INT_REG_LINK_UP
;
3247 writeq(val64
, &bar0
->gpio_int_reg
);
3251 if (((sp
->last_link_state
== LINK_UP
) &&
3252 (val64
& GPIO_INT_REG_LINK_DOWN
)) ||
3253 ((sp
->last_link_state
== LINK_DOWN
) &&
3254 (val64
& GPIO_INT_REG_LINK_UP
))) {
3255 val64
= readq(&bar0
->gpio_int_mask
);
3256 val64
|= GPIO_INT_MASK_LINK_DOWN
;
3257 val64
|= GPIO_INT_MASK_LINK_UP
;
3258 writeq(val64
, &bar0
->gpio_int_mask
);
3259 s2io_set_link((unsigned long)sp
);
3262 if (sp
->last_link_state
== LINK_UP
) {
3263 /*enable down interrupt */
3264 val64
= readq(&bar0
->gpio_int_mask
);
3265 /* unmasks link down intr */
3266 val64
&= ~GPIO_INT_MASK_LINK_DOWN
;
3267 /* masks link up intr */
3268 val64
|= GPIO_INT_MASK_LINK_UP
;
3269 writeq(val64
, &bar0
->gpio_int_mask
);
3271 /*enable UP Interrupt */
3272 val64
= readq(&bar0
->gpio_int_mask
);
3273 /* unmasks link up interrupt */
3274 val64
&= ~GPIO_INT_MASK_LINK_UP
;
3275 /* masks link down interrupt */
3276 val64
|= GPIO_INT_MASK_LINK_DOWN
;
3277 writeq(val64
, &bar0
->gpio_int_mask
);
3283 * s2io_isr - ISR handler of the device .
3284 * @irq: the irq of the device.
3285 * @dev_id: a void pointer to the dev structure of the NIC.
3286 * @pt_regs: pointer to the registers pushed on the stack.
3287 * Description: This function is the ISR handler of the device. It
3288 * identifies the reason for the interrupt and calls the relevant
3289 * service routines. As a contongency measure, this ISR allocates the
3290 * recv buffers, if their numbers are below the panic value which is
3291 * presently set to 25% of the original number of rcv buffers allocated.
3293 * IRQ_HANDLED: will be returned if IRQ was handled by this routine
3294 * IRQ_NONE: will be returned if interrupt is not from our device
3296 static irqreturn_t
s2io_isr(int irq
, void *dev_id
, struct pt_regs
*regs
)
3298 struct net_device
*dev
= (struct net_device
*) dev_id
;
3299 nic_t
*sp
= dev
->priv
;
3300 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
3302 u64 reason
= 0, val64
;
3303 mac_info_t
*mac_control
;
3304 struct config_param
*config
;
3306 atomic_inc(&sp
->isr_cnt
);
3307 mac_control
= &sp
->mac_control
;
3308 config
= &sp
->config
;
3311 * Identify the cause for interrupt and call the appropriate
3312 * interrupt handler. Causes for the interrupt could be;
3316 * 4. Error in any functional blocks of the NIC.
3318 reason
= readq(&bar0
->general_int_status
);
3321 /* The interrupt was not raised by Xena. */
3322 atomic_dec(&sp
->isr_cnt
);
3326 #ifdef CONFIG_S2IO_NAPI
3327 if (reason
& GEN_INTR_RXTRAFFIC
) {
3328 if (netif_rx_schedule_prep(dev
)) {
3329 en_dis_able_nic_intrs(sp
, RX_TRAFFIC_INTR
,
3331 __netif_rx_schedule(dev
);
3335 /* If Intr is because of Rx Traffic */
3336 if (reason
& GEN_INTR_RXTRAFFIC
) {
3338 * rx_traffic_int reg is an R1 register, writing all 1's
3339 * will ensure that the actual interrupt causing bit get's
3340 * cleared and hence a read can be avoided.
3342 val64
= 0xFFFFFFFFFFFFFFFFULL
;
3343 writeq(val64
, &bar0
->rx_traffic_int
);
3344 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
3345 rx_intr_handler(&mac_control
->rings
[i
]);
3350 /* If Intr is because of Tx Traffic */
3351 if (reason
& GEN_INTR_TXTRAFFIC
) {
3353 * tx_traffic_int reg is an R1 register, writing all 1's
3354 * will ensure that the actual interrupt causing bit get's
3355 * cleared and hence a read can be avoided.
3357 val64
= 0xFFFFFFFFFFFFFFFFULL
;
3358 writeq(val64
, &bar0
->tx_traffic_int
);
3360 for (i
= 0; i
< config
->tx_fifo_num
; i
++)
3361 tx_intr_handler(&mac_control
->fifos
[i
]);
3364 if (reason
& GEN_INTR_TXPIC
)
3365 s2io_txpic_intr_handle(sp
);
3367 * If the Rx buffer count is below the panic threshold then
3368 * reallocate the buffers from the interrupt handler itself,
3369 * else schedule a tasklet to reallocate the buffers.
3371 #ifndef CONFIG_S2IO_NAPI
3372 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
3374 int rxb_size
= atomic_read(&sp
->rx_bufs_left
[i
]);
3375 int level
= rx_buffer_level(sp
, rxb_size
, i
);
3377 if ((level
== PANIC
) && (!TASKLET_IN_USE
)) {
3378 DBG_PRINT(INTR_DBG
, "%s: Rx BD hit ", dev
->name
);
3379 DBG_PRINT(INTR_DBG
, "PANIC levels\n");
3380 if ((ret
= fill_rx_buffers(sp
, i
)) == -ENOMEM
) {
3381 DBG_PRINT(ERR_DBG
, "%s:Out of memory",
3383 DBG_PRINT(ERR_DBG
, " in ISR!!\n");
3384 clear_bit(0, (&sp
->tasklet_status
));
3385 atomic_dec(&sp
->isr_cnt
);
3388 clear_bit(0, (&sp
->tasklet_status
));
3389 } else if (level
== LOW
) {
3390 tasklet_schedule(&sp
->task
);
3395 atomic_dec(&sp
->isr_cnt
);
3402 static void s2io_updt_stats(nic_t
*sp
)
3404 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
3408 if (atomic_read(&sp
->card_state
) == CARD_UP
) {
3409 /* Apprx 30us on a 133 MHz bus */
3410 val64
= SET_UPDT_CLICKS(10) |
3411 STAT_CFG_ONE_SHOT_EN
| STAT_CFG_STAT_EN
;
3412 writeq(val64
, &bar0
->stat_cfg
);
3415 val64
= readq(&bar0
->stat_cfg
);
3416 if (!(val64
& BIT(0)))
3420 break; /* Updt failed */
3426 * s2io_get_stats - Updates the device statistics structure.
3427 * @dev : pointer to the device structure.
3429 * This function updates the device statistics structure in the s2io_nic
3430 * structure and returns a pointer to the same.
3432 * pointer to the updated net_device_stats structure.
3435 struct net_device_stats
*s2io_get_stats(struct net_device
*dev
)
3437 nic_t
*sp
= dev
->priv
;
3438 mac_info_t
*mac_control
;
3439 struct config_param
*config
;
3442 mac_control
= &sp
->mac_control
;
3443 config
= &sp
->config
;
3445 /* Configure Stats for immediate updt */
3446 s2io_updt_stats(sp
);
3448 sp
->stats
.tx_packets
=
3449 le32_to_cpu(mac_control
->stats_info
->tmac_frms
);
3450 sp
->stats
.tx_errors
=
3451 le32_to_cpu(mac_control
->stats_info
->tmac_any_err_frms
);
3452 sp
->stats
.rx_errors
=
3453 le32_to_cpu(mac_control
->stats_info
->rmac_drop_frms
);
3454 sp
->stats
.multicast
=
3455 le32_to_cpu(mac_control
->stats_info
->rmac_vld_mcst_frms
);
3456 sp
->stats
.rx_length_errors
=
3457 le32_to_cpu(mac_control
->stats_info
->rmac_long_frms
);
3459 return (&sp
->stats
);
3463 * s2io_set_multicast - entry point for multicast address enable/disable.
3464 * @dev : pointer to the device structure
3466 * This function is a driver entry point which gets called by the kernel
3467 * whenever multicast addresses must be enabled/disabled. This also gets
3468 * called to set/reset promiscuous mode. Depending on the deivce flag, we
3469 * determine, if multicast address must be enabled or if promiscuous mode
3470 * is to be disabled etc.
3475 static void s2io_set_multicast(struct net_device
*dev
)
3478 struct dev_mc_list
*mclist
;
3479 nic_t
*sp
= dev
->priv
;
3480 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
3481 u64 val64
= 0, multi_mac
= 0x010203040506ULL
, mask
=
3483 u64 dis_addr
= 0xffffffffffffULL
, mac_addr
= 0;
3486 if ((dev
->flags
& IFF_ALLMULTI
) && (!sp
->m_cast_flg
)) {
3487 /* Enable all Multicast addresses */
3488 writeq(RMAC_ADDR_DATA0_MEM_ADDR(multi_mac
),
3489 &bar0
->rmac_addr_data0_mem
);
3490 writeq(RMAC_ADDR_DATA1_MEM_MASK(mask
),
3491 &bar0
->rmac_addr_data1_mem
);
3492 val64
= RMAC_ADDR_CMD_MEM_WE
|
3493 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD
|
3494 RMAC_ADDR_CMD_MEM_OFFSET(MAC_MC_ALL_MC_ADDR_OFFSET
);
3495 writeq(val64
, &bar0
->rmac_addr_cmd_mem
);
3496 /* Wait till command completes */
3497 wait_for_cmd_complete(sp
);
3500 sp
->all_multi_pos
= MAC_MC_ALL_MC_ADDR_OFFSET
;
3501 } else if ((dev
->flags
& IFF_ALLMULTI
) && (sp
->m_cast_flg
)) {
3502 /* Disable all Multicast addresses */
3503 writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr
),
3504 &bar0
->rmac_addr_data0_mem
);
3505 writeq(RMAC_ADDR_DATA1_MEM_MASK(0x0),
3506 &bar0
->rmac_addr_data1_mem
);
3507 val64
= RMAC_ADDR_CMD_MEM_WE
|
3508 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD
|
3509 RMAC_ADDR_CMD_MEM_OFFSET(sp
->all_multi_pos
);
3510 writeq(val64
, &bar0
->rmac_addr_cmd_mem
);
3511 /* Wait till command completes */
3512 wait_for_cmd_complete(sp
);
3515 sp
->all_multi_pos
= 0;
3518 if ((dev
->flags
& IFF_PROMISC
) && (!sp
->promisc_flg
)) {
3519 /* Put the NIC into promiscuous mode */
3520 add
= &bar0
->mac_cfg
;
3521 val64
= readq(&bar0
->mac_cfg
);
3522 val64
|= MAC_CFG_RMAC_PROM_ENABLE
;
3524 writeq(RMAC_CFG_KEY(0x4C0D), &bar0
->rmac_cfg_key
);
3525 writel((u32
) val64
, add
);
3526 writeq(RMAC_CFG_KEY(0x4C0D), &bar0
->rmac_cfg_key
);
3527 writel((u32
) (val64
>> 32), (add
+ 4));
3529 val64
= readq(&bar0
->mac_cfg
);
3530 sp
->promisc_flg
= 1;
3531 DBG_PRINT(ERR_DBG
, "%s: entered promiscuous mode\n",
3533 } else if (!(dev
->flags
& IFF_PROMISC
) && (sp
->promisc_flg
)) {
3534 /* Remove the NIC from promiscuous mode */
3535 add
= &bar0
->mac_cfg
;
3536 val64
= readq(&bar0
->mac_cfg
);
3537 val64
&= ~MAC_CFG_RMAC_PROM_ENABLE
;
3539 writeq(RMAC_CFG_KEY(0x4C0D), &bar0
->rmac_cfg_key
);
3540 writel((u32
) val64
, add
);
3541 writeq(RMAC_CFG_KEY(0x4C0D), &bar0
->rmac_cfg_key
);
3542 writel((u32
) (val64
>> 32), (add
+ 4));
3544 val64
= readq(&bar0
->mac_cfg
);
3545 sp
->promisc_flg
= 0;
3546 DBG_PRINT(ERR_DBG
, "%s: left promiscuous mode\n",
3550 /* Update individual M_CAST address list */
3551 if ((!sp
->m_cast_flg
) && dev
->mc_count
) {
3553 (MAX_ADDRS_SUPPORTED
- MAC_MC_ADDR_START_OFFSET
- 1)) {
3554 DBG_PRINT(ERR_DBG
, "%s: No more Rx filters ",
3556 DBG_PRINT(ERR_DBG
, "can be added, please enable ");
3557 DBG_PRINT(ERR_DBG
, "ALL_MULTI instead\n");
3561 prev_cnt
= sp
->mc_addr_count
;
3562 sp
->mc_addr_count
= dev
->mc_count
;
3564 /* Clear out the previous list of Mc in the H/W. */
3565 for (i
= 0; i
< prev_cnt
; i
++) {
3566 writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr
),
3567 &bar0
->rmac_addr_data0_mem
);
3568 writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL),
3569 &bar0
->rmac_addr_data1_mem
);
3570 val64
= RMAC_ADDR_CMD_MEM_WE
|
3571 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD
|
3572 RMAC_ADDR_CMD_MEM_OFFSET
3573 (MAC_MC_ADDR_START_OFFSET
+ i
);
3574 writeq(val64
, &bar0
->rmac_addr_cmd_mem
);
3576 /* Wait for command completes */
3577 if (wait_for_cmd_complete(sp
)) {
3578 DBG_PRINT(ERR_DBG
, "%s: Adding ",
3580 DBG_PRINT(ERR_DBG
, "Multicasts failed\n");
3585 /* Create the new Rx filter list and update the same in H/W. */
3586 for (i
= 0, mclist
= dev
->mc_list
; i
< dev
->mc_count
;
3587 i
++, mclist
= mclist
->next
) {
3588 memcpy(sp
->usr_addrs
[i
].addr
, mclist
->dmi_addr
,
3590 for (j
= 0; j
< ETH_ALEN
; j
++) {
3591 mac_addr
|= mclist
->dmi_addr
[j
];
3595 writeq(RMAC_ADDR_DATA0_MEM_ADDR(mac_addr
),
3596 &bar0
->rmac_addr_data0_mem
);
3597 writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL),
3598 &bar0
->rmac_addr_data1_mem
);
3599 val64
= RMAC_ADDR_CMD_MEM_WE
|
3600 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD
|
3601 RMAC_ADDR_CMD_MEM_OFFSET
3602 (i
+ MAC_MC_ADDR_START_OFFSET
);
3603 writeq(val64
, &bar0
->rmac_addr_cmd_mem
);
3605 /* Wait for command completes */
3606 if (wait_for_cmd_complete(sp
)) {
3607 DBG_PRINT(ERR_DBG
, "%s: Adding ",
3609 DBG_PRINT(ERR_DBG
, "Multicasts failed\n");
3617 * s2io_set_mac_addr - Programs the Xframe mac address
3618 * @dev : pointer to the device structure.
3619 * @addr: a uchar pointer to the new mac address which is to be set.
3620 * Description : This procedure will program the Xframe to receive
3621 * frames with new Mac Address
3622 * Return value: SUCCESS on success and an appropriate (-)ve integer
3623 * as defined in errno.h file on failure.
3626 int s2io_set_mac_addr(struct net_device
*dev
, u8
* addr
)
3628 nic_t
*sp
= dev
->priv
;
3629 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
3630 register u64 val64
, mac_addr
= 0;
3634 * Set the new MAC address as the new unicast filter and reflect this
3635 * change on the device address registered with the OS. It will be
3638 for (i
= 0; i
< ETH_ALEN
; i
++) {
3640 mac_addr
|= addr
[i
];
3643 writeq(RMAC_ADDR_DATA0_MEM_ADDR(mac_addr
),
3644 &bar0
->rmac_addr_data0_mem
);
3647 RMAC_ADDR_CMD_MEM_WE
| RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD
|
3648 RMAC_ADDR_CMD_MEM_OFFSET(0);
3649 writeq(val64
, &bar0
->rmac_addr_cmd_mem
);
3650 /* Wait till command completes */
3651 if (wait_for_cmd_complete(sp
)) {
3652 DBG_PRINT(ERR_DBG
, "%s: set_mac_addr failed\n", dev
->name
);
3660 * s2io_ethtool_sset - Sets different link parameters.
3661 * @sp : private member of the device structure, which is a pointer to the * s2io_nic structure.
3662 * @info: pointer to the structure with parameters given by ethtool to set
3665 * The function sets different link parameters provided by the user onto
3671 static int s2io_ethtool_sset(struct net_device
*dev
,
3672 struct ethtool_cmd
*info
)
3674 nic_t
*sp
= dev
->priv
;
3675 if ((info
->autoneg
== AUTONEG_ENABLE
) ||
3676 (info
->speed
!= SPEED_10000
) || (info
->duplex
!= DUPLEX_FULL
))
3679 s2io_close(sp
->dev
);
3687 * s2io_ethtol_gset - Return link specific information.
3688 * @sp : private member of the device structure, pointer to the
3689 * s2io_nic structure.
3690 * @info : pointer to the structure with parameters given by ethtool
3691 * to return link information.
3693 * Returns link specific information like speed, duplex etc.. to ethtool.
3695 * return 0 on success.
3698 static int s2io_ethtool_gset(struct net_device
*dev
, struct ethtool_cmd
*info
)
3700 nic_t
*sp
= dev
->priv
;
3701 info
->supported
= (SUPPORTED_10000baseT_Full
| SUPPORTED_FIBRE
);
3702 info
->advertising
= (SUPPORTED_10000baseT_Full
| SUPPORTED_FIBRE
);
3703 info
->port
= PORT_FIBRE
;
3704 /* info->transceiver?? TODO */
3706 if (netif_carrier_ok(sp
->dev
)) {
3707 info
->speed
= 10000;
3708 info
->duplex
= DUPLEX_FULL
;
3714 info
->autoneg
= AUTONEG_DISABLE
;
3719 * s2io_ethtool_gdrvinfo - Returns driver specific information.
3720 * @sp : private member of the device structure, which is a pointer to the
3721 * s2io_nic structure.
3722 * @info : pointer to the structure with parameters given by ethtool to
3723 * return driver information.
3725 * Returns driver specefic information like name, version etc.. to ethtool.
3730 static void s2io_ethtool_gdrvinfo(struct net_device
*dev
,
3731 struct ethtool_drvinfo
*info
)
3733 nic_t
*sp
= dev
->priv
;
3735 strncpy(info
->driver
, s2io_driver_name
, sizeof(s2io_driver_name
));
3736 strncpy(info
->version
, s2io_driver_version
,
3737 sizeof(s2io_driver_version
));
3738 strncpy(info
->fw_version
, "", 32);
3739 strncpy(info
->bus_info
, pci_name(sp
->pdev
), 32);
3740 info
->regdump_len
= XENA_REG_SPACE
;
3741 info
->eedump_len
= XENA_EEPROM_SPACE
;
3742 info
->testinfo_len
= S2IO_TEST_LEN
;
3743 info
->n_stats
= S2IO_STAT_LEN
;
3747 * s2io_ethtool_gregs - dumps the entire space of Xfame into the buffer.
3748 * @sp: private member of the device structure, which is a pointer to the
3749 * s2io_nic structure.
3750 * @regs : pointer to the structure with parameters given by ethtool for
3751 * dumping the registers.
3752 * @reg_space: The input argumnet into which all the registers are dumped.
3754 * Dumps the entire register space of xFrame NIC into the user given
3760 static void s2io_ethtool_gregs(struct net_device
*dev
,
3761 struct ethtool_regs
*regs
, void *space
)
3765 u8
*reg_space
= (u8
*) space
;
3766 nic_t
*sp
= dev
->priv
;
3768 regs
->len
= XENA_REG_SPACE
;
3769 regs
->version
= sp
->pdev
->subsystem_device
;
3771 for (i
= 0; i
< regs
->len
; i
+= 8) {
3772 reg
= readq(sp
->bar0
+ i
);
3773 memcpy((reg_space
+ i
), ®
, 8);
3778 * s2io_phy_id - timer function that alternates adapter LED.
3779 * @data : address of the private member of the device structure, which
3780 * is a pointer to the s2io_nic structure, provided as an u32.
3781 * Description: This is actually the timer function that alternates the
3782 * adapter LED bit of the adapter control bit to set/reset every time on
3783 * invocation. The timer is set for 1/2 a second, hence tha NIC blinks
3784 * once every second.
3786 static void s2io_phy_id(unsigned long data
)
3788 nic_t
*sp
= (nic_t
*) data
;
3789 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
3793 subid
= sp
->pdev
->subsystem_device
;
3794 if ((sp
->device_type
== XFRAME_II_DEVICE
) ||
3795 ((subid
& 0xFF) >= 0x07)) {
3796 val64
= readq(&bar0
->gpio_control
);
3797 val64
^= GPIO_CTRL_GPIO_0
;
3798 writeq(val64
, &bar0
->gpio_control
);
3800 val64
= readq(&bar0
->adapter_control
);
3801 val64
^= ADAPTER_LED_ON
;
3802 writeq(val64
, &bar0
->adapter_control
);
3805 mod_timer(&sp
->id_timer
, jiffies
+ HZ
/ 2);
3809 * s2io_ethtool_idnic - To physically identify the nic on the system.
3810 * @sp : private member of the device structure, which is a pointer to the
3811 * s2io_nic structure.
3812 * @id : pointer to the structure with identification parameters given by
3814 * Description: Used to physically identify the NIC on the system.
3815 * The Link LED will blink for a time specified by the user for
3817 * NOTE: The Link has to be Up to be able to blink the LED. Hence
3818 * identification is possible only if it's link is up.
3820 * int , returns 0 on success
3823 static int s2io_ethtool_idnic(struct net_device
*dev
, u32 data
)
3825 u64 val64
= 0, last_gpio_ctrl_val
;
3826 nic_t
*sp
= dev
->priv
;
3827 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
3830 subid
= sp
->pdev
->subsystem_device
;
3831 last_gpio_ctrl_val
= readq(&bar0
->gpio_control
);
3832 if ((sp
->device_type
== XFRAME_I_DEVICE
) &&
3833 ((subid
& 0xFF) < 0x07)) {
3834 val64
= readq(&bar0
->adapter_control
);
3835 if (!(val64
& ADAPTER_CNTL_EN
)) {
3837 "Adapter Link down, cannot blink LED\n");
3841 if (sp
->id_timer
.function
== NULL
) {
3842 init_timer(&sp
->id_timer
);
3843 sp
->id_timer
.function
= s2io_phy_id
;
3844 sp
->id_timer
.data
= (unsigned long) sp
;
3846 mod_timer(&sp
->id_timer
, jiffies
);
3848 msleep_interruptible(data
* HZ
);
3850 msleep_interruptible(MAX_FLICKER_TIME
);
3851 del_timer_sync(&sp
->id_timer
);
3853 if (CARDS_WITH_FAULTY_LINK_INDICATORS(sp
->device_type
, subid
)) {
3854 writeq(last_gpio_ctrl_val
, &bar0
->gpio_control
);
3855 last_gpio_ctrl_val
= readq(&bar0
->gpio_control
);
3862 * s2io_ethtool_getpause_data -Pause frame frame generation and reception.
3863 * @sp : private member of the device structure, which is a pointer to the
3864 * s2io_nic structure.
3865 * @ep : pointer to the structure with pause parameters given by ethtool.
3867 * Returns the Pause frame generation and reception capability of the NIC.
3871 static void s2io_ethtool_getpause_data(struct net_device
*dev
,
3872 struct ethtool_pauseparam
*ep
)
3875 nic_t
*sp
= dev
->priv
;
3876 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
3878 val64
= readq(&bar0
->rmac_pause_cfg
);
3879 if (val64
& RMAC_PAUSE_GEN_ENABLE
)
3880 ep
->tx_pause
= TRUE
;
3881 if (val64
& RMAC_PAUSE_RX_ENABLE
)
3882 ep
->rx_pause
= TRUE
;
3883 ep
->autoneg
= FALSE
;
3887 * s2io_ethtool_setpause_data - set/reset pause frame generation.
3888 * @sp : private member of the device structure, which is a pointer to the
3889 * s2io_nic structure.
3890 * @ep : pointer to the structure with pause parameters given by ethtool.
3892 * It can be used to set or reset Pause frame generation or reception
3893 * support of the NIC.
3895 * int, returns 0 on Success
3898 static int s2io_ethtool_setpause_data(struct net_device
*dev
,
3899 struct ethtool_pauseparam
*ep
)
3902 nic_t
*sp
= dev
->priv
;
3903 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
3905 val64
= readq(&bar0
->rmac_pause_cfg
);
3907 val64
|= RMAC_PAUSE_GEN_ENABLE
;
3909 val64
&= ~RMAC_PAUSE_GEN_ENABLE
;
3911 val64
|= RMAC_PAUSE_RX_ENABLE
;
3913 val64
&= ~RMAC_PAUSE_RX_ENABLE
;
3914 writeq(val64
, &bar0
->rmac_pause_cfg
);
3919 * read_eeprom - reads 4 bytes of data from user given offset.
3920 * @sp : private member of the device structure, which is a pointer to the
3921 * s2io_nic structure.
3922 * @off : offset at which the data must be written
3923 * @data : Its an output parameter where the data read at the given
3926 * Will read 4 bytes of data from the user given offset and return the
3928 * NOTE: Will allow to read only part of the EEPROM visible through the
3931 * -1 on failure and 0 on success.
3934 #define S2IO_DEV_ID 5
3935 static int read_eeprom(nic_t
* sp
, int off
, u32
* data
)
3940 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
3942 val64
= I2C_CONTROL_DEV_ID(S2IO_DEV_ID
) | I2C_CONTROL_ADDR(off
) |
3943 I2C_CONTROL_BYTE_CNT(0x3) | I2C_CONTROL_READ
|
3944 I2C_CONTROL_CNTL_START
;
3945 SPECIAL_REG_WRITE(val64
, &bar0
->i2c_control
, LF
);
3947 while (exit_cnt
< 5) {
3948 val64
= readq(&bar0
->i2c_control
);
3949 if (I2C_CONTROL_CNTL_END(val64
)) {
3950 *data
= I2C_CONTROL_GET_DATA(val64
);
3962 * write_eeprom - actually writes the relevant part of the data value.
3963 * @sp : private member of the device structure, which is a pointer to the
3964 * s2io_nic structure.
3965 * @off : offset at which the data must be written
3966 * @data : The data that is to be written
3967 * @cnt : Number of bytes of the data that are actually to be written into
3968 * the Eeprom. (max of 3)
3970 * Actually writes the relevant part of the data value into the Eeprom
3971 * through the I2C bus.
3973 * 0 on success, -1 on failure.
3976 static int write_eeprom(nic_t
* sp
, int off
, u32 data
, int cnt
)
3978 int exit_cnt
= 0, ret
= -1;
3980 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
3982 val64
= I2C_CONTROL_DEV_ID(S2IO_DEV_ID
) | I2C_CONTROL_ADDR(off
) |
3983 I2C_CONTROL_BYTE_CNT(cnt
) | I2C_CONTROL_SET_DATA(data
) |
3984 I2C_CONTROL_CNTL_START
;
3985 SPECIAL_REG_WRITE(val64
, &bar0
->i2c_control
, LF
);
3987 while (exit_cnt
< 5) {
3988 val64
= readq(&bar0
->i2c_control
);
3989 if (I2C_CONTROL_CNTL_END(val64
)) {
3990 if (!(val64
& I2C_CONTROL_NACK
))
4002 * s2io_ethtool_geeprom - reads the value stored in the Eeprom.
4003 * @sp : private member of the device structure, which is a pointer to the * s2io_nic structure.
4004 * @eeprom : pointer to the user level structure provided by ethtool,
4005 * containing all relevant information.
4006 * @data_buf : user defined value to be written into Eeprom.
4007 * Description: Reads the values stored in the Eeprom at given offset
4008 * for a given length. Stores these values int the input argument data
4009 * buffer 'data_buf' and returns these to the caller (ethtool.)
4014 static int s2io_ethtool_geeprom(struct net_device
*dev
,
4015 struct ethtool_eeprom
*eeprom
, u8
* data_buf
)
4018 nic_t
*sp
= dev
->priv
;
4020 eeprom
->magic
= sp
->pdev
->vendor
| (sp
->pdev
->device
<< 16);
4022 if ((eeprom
->offset
+ eeprom
->len
) > (XENA_EEPROM_SPACE
))
4023 eeprom
->len
= XENA_EEPROM_SPACE
- eeprom
->offset
;
4025 for (i
= 0; i
< eeprom
->len
; i
+= 4) {
4026 if (read_eeprom(sp
, (eeprom
->offset
+ i
), &data
)) {
4027 DBG_PRINT(ERR_DBG
, "Read of EEPROM failed\n");
4031 memcpy((data_buf
+ i
), &valid
, 4);
4037 * s2io_ethtool_seeprom - tries to write the user provided value in Eeprom
4038 * @sp : private member of the device structure, which is a pointer to the
4039 * s2io_nic structure.
4040 * @eeprom : pointer to the user level structure provided by ethtool,
4041 * containing all relevant information.
4042 * @data_buf ; user defined value to be written into Eeprom.
4044 * Tries to write the user provided value in the Eeprom, at the offset
4045 * given by the user.
4047 * 0 on success, -EFAULT on failure.
4050 static int s2io_ethtool_seeprom(struct net_device
*dev
,
4051 struct ethtool_eeprom
*eeprom
,
4054 int len
= eeprom
->len
, cnt
= 0;
4055 u32 valid
= 0, data
;
4056 nic_t
*sp
= dev
->priv
;
4058 if (eeprom
->magic
!= (sp
->pdev
->vendor
| (sp
->pdev
->device
<< 16))) {
4060 "ETHTOOL_WRITE_EEPROM Err: Magic value ");
4061 DBG_PRINT(ERR_DBG
, "is wrong, Its not 0x%x\n",
4067 data
= (u32
) data_buf
[cnt
] & 0x000000FF;
4069 valid
= (u32
) (data
<< 24);
4073 if (write_eeprom(sp
, (eeprom
->offset
+ cnt
), valid
, 0)) {
4075 "ETHTOOL_WRITE_EEPROM Err: Cannot ");
4077 "write into the specified offset\n");
4088 * s2io_register_test - reads and writes into all clock domains.
4089 * @sp : private member of the device structure, which is a pointer to the
4090 * s2io_nic structure.
4091 * @data : variable that returns the result of each of the test conducted b
4094 * Read and write into all clock domains. The NIC has 3 clock domains,
4095 * see that registers in all the three regions are accessible.
4100 static int s2io_register_test(nic_t
* sp
, uint64_t * data
)
4102 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
4106 val64
= readq(&bar0
->pif_rd_swapper_fb
);
4107 if (val64
!= 0x123456789abcdefULL
) {
4109 DBG_PRINT(INFO_DBG
, "Read Test level 1 fails\n");
4112 val64
= readq(&bar0
->rmac_pause_cfg
);
4113 if (val64
!= 0xc000ffff00000000ULL
) {
4115 DBG_PRINT(INFO_DBG
, "Read Test level 2 fails\n");
4118 val64
= readq(&bar0
->rx_queue_cfg
);
4119 if (val64
!= 0x0808080808080808ULL
) {
4121 DBG_PRINT(INFO_DBG
, "Read Test level 3 fails\n");
4124 val64
= readq(&bar0
->xgxs_efifo_cfg
);
4125 if (val64
!= 0x000000001923141EULL
) {
4127 DBG_PRINT(INFO_DBG
, "Read Test level 4 fails\n");
4130 val64
= 0x5A5A5A5A5A5A5A5AULL
;
4131 writeq(val64
, &bar0
->xmsi_data
);
4132 val64
= readq(&bar0
->xmsi_data
);
4133 if (val64
!= 0x5A5A5A5A5A5A5A5AULL
) {
4135 DBG_PRINT(ERR_DBG
, "Write Test level 1 fails\n");
4138 val64
= 0xA5A5A5A5A5A5A5A5ULL
;
4139 writeq(val64
, &bar0
->xmsi_data
);
4140 val64
= readq(&bar0
->xmsi_data
);
4141 if (val64
!= 0xA5A5A5A5A5A5A5A5ULL
) {
4143 DBG_PRINT(ERR_DBG
, "Write Test level 2 fails\n");
4151 * s2io_eeprom_test - to verify that EEprom in the xena can be programmed.
4152 * @sp : private member of the device structure, which is a pointer to the
4153 * s2io_nic structure.
4154 * @data:variable that returns the result of each of the test conducted by
4157 * Verify that EEPROM in the xena can be programmed using I2C_CONTROL
4163 static int s2io_eeprom_test(nic_t
* sp
, uint64_t * data
)
4168 /* Test Write Error at offset 0 */
4169 if (!write_eeprom(sp
, 0, 0, 3))
4172 /* Test Write at offset 4f0 */
4173 if (write_eeprom(sp
, 0x4F0, 0x01234567, 3))
4175 if (read_eeprom(sp
, 0x4F0, &ret_data
))
4178 if (ret_data
!= 0x01234567)
4181 /* Reset the EEPROM data go FFFF */
4182 write_eeprom(sp
, 0x4F0, 0xFFFFFFFF, 3);
4184 /* Test Write Request Error at offset 0x7c */
4185 if (!write_eeprom(sp
, 0x07C, 0, 3))
4188 /* Test Write Request at offset 0x7fc */
4189 if (write_eeprom(sp
, 0x7FC, 0x01234567, 3))
4191 if (read_eeprom(sp
, 0x7FC, &ret_data
))
4194 if (ret_data
!= 0x01234567)
4197 /* Reset the EEPROM data go FFFF */
4198 write_eeprom(sp
, 0x7FC, 0xFFFFFFFF, 3);
4200 /* Test Write Error at offset 0x80 */
4201 if (!write_eeprom(sp
, 0x080, 0, 3))
4204 /* Test Write Error at offset 0xfc */
4205 if (!write_eeprom(sp
, 0x0FC, 0, 3))
4208 /* Test Write Error at offset 0x100 */
4209 if (!write_eeprom(sp
, 0x100, 0, 3))
4212 /* Test Write Error at offset 4ec */
4213 if (!write_eeprom(sp
, 0x4EC, 0, 3))
4221 * s2io_bist_test - invokes the MemBist test of the card .
4222 * @sp : private member of the device structure, which is a pointer to the
4223 * s2io_nic structure.
4224 * @data:variable that returns the result of each of the test conducted by
4227 * This invokes the MemBist test of the card. We give around
4228 * 2 secs time for the Test to complete. If it's still not complete
4229 * within this peiod, we consider that the test failed.
4231 * 0 on success and -1 on failure.
4234 static int s2io_bist_test(nic_t
* sp
, uint64_t * data
)
4237 int cnt
= 0, ret
= -1;
4239 pci_read_config_byte(sp
->pdev
, PCI_BIST
, &bist
);
4240 bist
|= PCI_BIST_START
;
4241 pci_write_config_word(sp
->pdev
, PCI_BIST
, bist
);
4244 pci_read_config_byte(sp
->pdev
, PCI_BIST
, &bist
);
4245 if (!(bist
& PCI_BIST_START
)) {
4246 *data
= (bist
& PCI_BIST_CODE_MASK
);
4258 * s2io-link_test - verifies the link state of the nic
4259 * @sp ; private member of the device structure, which is a pointer to the
4260 * s2io_nic structure.
4261 * @data: variable that returns the result of each of the test conducted by
4264 * The function verifies the link state of the NIC and updates the input
4265 * argument 'data' appropriately.
4270 static int s2io_link_test(nic_t
* sp
, uint64_t * data
)
4272 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
4275 val64
= readq(&bar0
->adapter_status
);
4276 if (val64
& ADAPTER_STATUS_RMAC_LOCAL_FAULT
)
4283 * s2io_rldram_test - offline test for access to the RldRam chip on the NIC
4284 * @sp - private member of the device structure, which is a pointer to the
4285 * s2io_nic structure.
4286 * @data - variable that returns the result of each of the test
4287 * conducted by the driver.
4289 * This is one of the offline test that tests the read and write
4290 * access to the RldRam chip on the NIC.
4295 static int s2io_rldram_test(nic_t
* sp
, uint64_t * data
)
4297 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
4299 int cnt
, iteration
= 0, test_pass
= 0;
4301 val64
= readq(&bar0
->adapter_control
);
4302 val64
&= ~ADAPTER_ECC_EN
;
4303 writeq(val64
, &bar0
->adapter_control
);
4305 val64
= readq(&bar0
->mc_rldram_test_ctrl
);
4306 val64
|= MC_RLDRAM_TEST_MODE
;
4307 writeq(val64
, &bar0
->mc_rldram_test_ctrl
);
4309 val64
= readq(&bar0
->mc_rldram_mrs
);
4310 val64
|= MC_RLDRAM_QUEUE_SIZE_ENABLE
;
4311 SPECIAL_REG_WRITE(val64
, &bar0
->mc_rldram_mrs
, UF
);
4313 val64
|= MC_RLDRAM_MRS_ENABLE
;
4314 SPECIAL_REG_WRITE(val64
, &bar0
->mc_rldram_mrs
, UF
);
4316 while (iteration
< 2) {
4317 val64
= 0x55555555aaaa0000ULL
;
4318 if (iteration
== 1) {
4319 val64
^= 0xFFFFFFFFFFFF0000ULL
;
4321 writeq(val64
, &bar0
->mc_rldram_test_d0
);
4323 val64
= 0xaaaa5a5555550000ULL
;
4324 if (iteration
== 1) {
4325 val64
^= 0xFFFFFFFFFFFF0000ULL
;
4327 writeq(val64
, &bar0
->mc_rldram_test_d1
);
4329 val64
= 0x55aaaaaaaa5a0000ULL
;
4330 if (iteration
== 1) {
4331 val64
^= 0xFFFFFFFFFFFF0000ULL
;
4333 writeq(val64
, &bar0
->mc_rldram_test_d2
);
4335 val64
= (u64
) (0x0000003fffff0000ULL
);
4336 writeq(val64
, &bar0
->mc_rldram_test_add
);
4339 val64
= MC_RLDRAM_TEST_MODE
;
4340 writeq(val64
, &bar0
->mc_rldram_test_ctrl
);
4343 MC_RLDRAM_TEST_MODE
| MC_RLDRAM_TEST_WRITE
|
4345 writeq(val64
, &bar0
->mc_rldram_test_ctrl
);
4347 for (cnt
= 0; cnt
< 5; cnt
++) {
4348 val64
= readq(&bar0
->mc_rldram_test_ctrl
);
4349 if (val64
& MC_RLDRAM_TEST_DONE
)
4357 val64
= MC_RLDRAM_TEST_MODE
;
4358 writeq(val64
, &bar0
->mc_rldram_test_ctrl
);
4360 val64
|= MC_RLDRAM_TEST_MODE
| MC_RLDRAM_TEST_GO
;
4361 writeq(val64
, &bar0
->mc_rldram_test_ctrl
);
4363 for (cnt
= 0; cnt
< 5; cnt
++) {
4364 val64
= readq(&bar0
->mc_rldram_test_ctrl
);
4365 if (val64
& MC_RLDRAM_TEST_DONE
)
4373 val64
= readq(&bar0
->mc_rldram_test_ctrl
);
4374 if (val64
& MC_RLDRAM_TEST_PASS
)
4389 * s2io_ethtool_test - conducts 6 tsets to determine the health of card.
4390 * @sp : private member of the device structure, which is a pointer to the
4391 * s2io_nic structure.
4392 * @ethtest : pointer to a ethtool command specific structure that will be
4393 * returned to the user.
4394 * @data : variable that returns the result of each of the test
4395 * conducted by the driver.
4397 * This function conducts 6 tests ( 4 offline and 2 online) to determine
4398 * the health of the card.
4403 static void s2io_ethtool_test(struct net_device
*dev
,
4404 struct ethtool_test
*ethtest
,
4407 nic_t
*sp
= dev
->priv
;
4408 int orig_state
= netif_running(sp
->dev
);
4410 if (ethtest
->flags
== ETH_TEST_FL_OFFLINE
) {
4411 /* Offline Tests. */
4413 s2io_close(sp
->dev
);
4415 if (s2io_register_test(sp
, &data
[0]))
4416 ethtest
->flags
|= ETH_TEST_FL_FAILED
;
4420 if (s2io_rldram_test(sp
, &data
[3]))
4421 ethtest
->flags
|= ETH_TEST_FL_FAILED
;
4425 if (s2io_eeprom_test(sp
, &data
[1]))
4426 ethtest
->flags
|= ETH_TEST_FL_FAILED
;
4428 if (s2io_bist_test(sp
, &data
[4]))
4429 ethtest
->flags
|= ETH_TEST_FL_FAILED
;
4439 "%s: is not up, cannot run test\n",
4448 if (s2io_link_test(sp
, &data
[2]))
4449 ethtest
->flags
|= ETH_TEST_FL_FAILED
;
4458 static void s2io_get_ethtool_stats(struct net_device
*dev
,
4459 struct ethtool_stats
*estats
,
4463 nic_t
*sp
= dev
->priv
;
4464 StatInfo_t
*stat_info
= sp
->mac_control
.stats_info
;
4466 s2io_updt_stats(sp
);
4468 (u64
)le32_to_cpu(stat_info
->tmac_frms_oflow
) << 32 |
4469 le32_to_cpu(stat_info
->tmac_frms
);
4471 (u64
)le32_to_cpu(stat_info
->tmac_data_octets_oflow
) << 32 |
4472 le32_to_cpu(stat_info
->tmac_data_octets
);
4473 tmp_stats
[i
++] = le64_to_cpu(stat_info
->tmac_drop_frms
);
4475 (u64
)le32_to_cpu(stat_info
->tmac_mcst_frms_oflow
) << 32 |
4476 le32_to_cpu(stat_info
->tmac_mcst_frms
);
4478 (u64
)le32_to_cpu(stat_info
->tmac_bcst_frms_oflow
) << 32 |
4479 le32_to_cpu(stat_info
->tmac_bcst_frms
);
4480 tmp_stats
[i
++] = le64_to_cpu(stat_info
->tmac_pause_ctrl_frms
);
4482 (u64
)le32_to_cpu(stat_info
->tmac_any_err_frms_oflow
) << 32 |
4483 le32_to_cpu(stat_info
->tmac_any_err_frms
);
4484 tmp_stats
[i
++] = le64_to_cpu(stat_info
->tmac_vld_ip_octets
);
4486 (u64
)le32_to_cpu(stat_info
->tmac_vld_ip_oflow
) << 32 |
4487 le32_to_cpu(stat_info
->tmac_vld_ip
);
4489 (u64
)le32_to_cpu(stat_info
->tmac_drop_ip_oflow
) << 32 |
4490 le32_to_cpu(stat_info
->tmac_drop_ip
);
4492 (u64
)le32_to_cpu(stat_info
->tmac_icmp_oflow
) << 32 |
4493 le32_to_cpu(stat_info
->tmac_icmp
);
4495 (u64
)le32_to_cpu(stat_info
->tmac_rst_tcp_oflow
) << 32 |
4496 le32_to_cpu(stat_info
->tmac_rst_tcp
);
4497 tmp_stats
[i
++] = le64_to_cpu(stat_info
->tmac_tcp
);
4498 tmp_stats
[i
++] = (u64
)le32_to_cpu(stat_info
->tmac_udp_oflow
) << 32 |
4499 le32_to_cpu(stat_info
->tmac_udp
);
4501 (u64
)le32_to_cpu(stat_info
->rmac_vld_frms_oflow
) << 32 |
4502 le32_to_cpu(stat_info
->rmac_vld_frms
);
4504 (u64
)le32_to_cpu(stat_info
->rmac_data_octets_oflow
) << 32 |
4505 le32_to_cpu(stat_info
->rmac_data_octets
);
4506 tmp_stats
[i
++] = le64_to_cpu(stat_info
->rmac_fcs_err_frms
);
4507 tmp_stats
[i
++] = le64_to_cpu(stat_info
->rmac_drop_frms
);
4509 (u64
)le32_to_cpu(stat_info
->rmac_vld_mcst_frms_oflow
) << 32 |
4510 le32_to_cpu(stat_info
->rmac_vld_mcst_frms
);
4512 (u64
)le32_to_cpu(stat_info
->rmac_vld_bcst_frms_oflow
) << 32 |
4513 le32_to_cpu(stat_info
->rmac_vld_bcst_frms
);
4514 tmp_stats
[i
++] = le32_to_cpu(stat_info
->rmac_in_rng_len_err_frms
);
4515 tmp_stats
[i
++] = le64_to_cpu(stat_info
->rmac_long_frms
);
4516 tmp_stats
[i
++] = le64_to_cpu(stat_info
->rmac_pause_ctrl_frms
);
4518 (u64
)le32_to_cpu(stat_info
->rmac_discarded_frms_oflow
) << 32 |
4519 le32_to_cpu(stat_info
->rmac_discarded_frms
);
4521 (u64
)le32_to_cpu(stat_info
->rmac_usized_frms_oflow
) << 32 |
4522 le32_to_cpu(stat_info
->rmac_usized_frms
);
4524 (u64
)le32_to_cpu(stat_info
->rmac_osized_frms_oflow
) << 32 |
4525 le32_to_cpu(stat_info
->rmac_osized_frms
);
4527 (u64
)le32_to_cpu(stat_info
->rmac_frag_frms_oflow
) << 32 |
4528 le32_to_cpu(stat_info
->rmac_frag_frms
);
4530 (u64
)le32_to_cpu(stat_info
->rmac_jabber_frms_oflow
) << 32 |
4531 le32_to_cpu(stat_info
->rmac_jabber_frms
);
4532 tmp_stats
[i
++] = (u64
)le32_to_cpu(stat_info
->rmac_ip_oflow
) << 32 |
4533 le32_to_cpu(stat_info
->rmac_ip
);
4534 tmp_stats
[i
++] = le64_to_cpu(stat_info
->rmac_ip_octets
);
4535 tmp_stats
[i
++] = le32_to_cpu(stat_info
->rmac_hdr_err_ip
);
4536 tmp_stats
[i
++] = (u64
)le32_to_cpu(stat_info
->rmac_drop_ip_oflow
) << 32 |
4537 le32_to_cpu(stat_info
->rmac_drop_ip
);
4538 tmp_stats
[i
++] = (u64
)le32_to_cpu(stat_info
->rmac_icmp_oflow
) << 32 |
4539 le32_to_cpu(stat_info
->rmac_icmp
);
4540 tmp_stats
[i
++] = le64_to_cpu(stat_info
->rmac_tcp
);
4541 tmp_stats
[i
++] = (u64
)le32_to_cpu(stat_info
->rmac_udp_oflow
) << 32 |
4542 le32_to_cpu(stat_info
->rmac_udp
);
4544 (u64
)le32_to_cpu(stat_info
->rmac_err_drp_udp_oflow
) << 32 |
4545 le32_to_cpu(stat_info
->rmac_err_drp_udp
);
4547 (u64
)le32_to_cpu(stat_info
->rmac_pause_cnt_oflow
) << 32 |
4548 le32_to_cpu(stat_info
->rmac_pause_cnt
);
4550 (u64
)le32_to_cpu(stat_info
->rmac_accepted_ip_oflow
) << 32 |
4551 le32_to_cpu(stat_info
->rmac_accepted_ip
);
4552 tmp_stats
[i
++] = le32_to_cpu(stat_info
->rmac_err_tcp
);
4554 tmp_stats
[i
++] = stat_info
->sw_stat
.single_ecc_errs
;
4555 tmp_stats
[i
++] = stat_info
->sw_stat
.double_ecc_errs
;
4558 int s2io_ethtool_get_regs_len(struct net_device
*dev
)
4560 return (XENA_REG_SPACE
);
4564 u32
s2io_ethtool_get_rx_csum(struct net_device
* dev
)
4566 nic_t
*sp
= dev
->priv
;
4568 return (sp
->rx_csum
);
4570 int s2io_ethtool_set_rx_csum(struct net_device
*dev
, u32 data
)
4572 nic_t
*sp
= dev
->priv
;
4581 int s2io_get_eeprom_len(struct net_device
*dev
)
4583 return (XENA_EEPROM_SPACE
);
4586 int s2io_ethtool_self_test_count(struct net_device
*dev
)
4588 return (S2IO_TEST_LEN
);
4590 void s2io_ethtool_get_strings(struct net_device
*dev
,
4591 u32 stringset
, u8
* data
)
4593 switch (stringset
) {
4595 memcpy(data
, s2io_gstrings
, S2IO_STRINGS_LEN
);
4598 memcpy(data
, ðtool_stats_keys
,
4599 sizeof(ethtool_stats_keys
));
4602 static int s2io_ethtool_get_stats_count(struct net_device
*dev
)
4604 return (S2IO_STAT_LEN
);
4607 int s2io_ethtool_op_set_tx_csum(struct net_device
*dev
, u32 data
)
4610 dev
->features
|= NETIF_F_IP_CSUM
;
4612 dev
->features
&= ~NETIF_F_IP_CSUM
;
4618 static struct ethtool_ops netdev_ethtool_ops
= {
4619 .get_settings
= s2io_ethtool_gset
,
4620 .set_settings
= s2io_ethtool_sset
,
4621 .get_drvinfo
= s2io_ethtool_gdrvinfo
,
4622 .get_regs_len
= s2io_ethtool_get_regs_len
,
4623 .get_regs
= s2io_ethtool_gregs
,
4624 .get_link
= ethtool_op_get_link
,
4625 .get_eeprom_len
= s2io_get_eeprom_len
,
4626 .get_eeprom
= s2io_ethtool_geeprom
,
4627 .set_eeprom
= s2io_ethtool_seeprom
,
4628 .get_pauseparam
= s2io_ethtool_getpause_data
,
4629 .set_pauseparam
= s2io_ethtool_setpause_data
,
4630 .get_rx_csum
= s2io_ethtool_get_rx_csum
,
4631 .set_rx_csum
= s2io_ethtool_set_rx_csum
,
4632 .get_tx_csum
= ethtool_op_get_tx_csum
,
4633 .set_tx_csum
= s2io_ethtool_op_set_tx_csum
,
4634 .get_sg
= ethtool_op_get_sg
,
4635 .set_sg
= ethtool_op_set_sg
,
4637 .get_tso
= ethtool_op_get_tso
,
4638 .set_tso
= ethtool_op_set_tso
,
4640 .self_test_count
= s2io_ethtool_self_test_count
,
4641 .self_test
= s2io_ethtool_test
,
4642 .get_strings
= s2io_ethtool_get_strings
,
4643 .phys_id
= s2io_ethtool_idnic
,
4644 .get_stats_count
= s2io_ethtool_get_stats_count
,
4645 .get_ethtool_stats
= s2io_get_ethtool_stats
4649 * s2io_ioctl - Entry point for the Ioctl
4650 * @dev : Device pointer.
4651 * @ifr : An IOCTL specefic structure, that can contain a pointer to
4652 * a proprietary structure used to pass information to the driver.
4653 * @cmd : This is used to distinguish between the different commands that
4654 * can be passed to the IOCTL functions.
4656 * Currently there are no special functionality supported in IOCTL, hence
4657 * function always return EOPNOTSUPPORTED
4660 int s2io_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
)
4666 * s2io_change_mtu - entry point to change MTU size for the device.
4667 * @dev : device pointer.
4668 * @new_mtu : the new MTU size for the device.
4669 * Description: A driver entry point to change MTU size for the device.
4670 * Before changing the MTU the device must be stopped.
4672 * 0 on success and an appropriate (-)ve integer as defined in errno.h
4676 int s2io_change_mtu(struct net_device
*dev
, int new_mtu
)
4678 nic_t
*sp
= dev
->priv
;
4680 if ((new_mtu
< MIN_MTU
) || (new_mtu
> S2IO_JUMBO_SIZE
)) {
4681 DBG_PRINT(ERR_DBG
, "%s: MTU size is invalid.\n",
4687 if (netif_running(dev
)) {
4689 netif_stop_queue(dev
);
4690 if (s2io_card_up(sp
)) {
4691 DBG_PRINT(ERR_DBG
, "%s: Device bring up failed\n",
4694 if (netif_queue_stopped(dev
))
4695 netif_wake_queue(dev
);
4696 } else { /* Device is down */
4697 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
4698 u64 val64
= new_mtu
;
4700 writeq(vBIT(val64
, 2, 14), &bar0
->rmac_max_pyld_len
);
4707 * s2io_tasklet - Bottom half of the ISR.
4708 * @dev_adr : address of the device structure in dma_addr_t format.
4710 * This is the tasklet or the bottom half of the ISR. This is
4711 * an extension of the ISR which is scheduled by the scheduler to be run
4712 * when the load on the CPU is low. All low priority tasks of the ISR can
4713 * be pushed into the tasklet. For now the tasklet is used only to
4714 * replenish the Rx buffers in the Rx buffer descriptors.
4719 static void s2io_tasklet(unsigned long dev_addr
)
4721 struct net_device
*dev
= (struct net_device
*) dev_addr
;
4722 nic_t
*sp
= dev
->priv
;
4724 mac_info_t
*mac_control
;
4725 struct config_param
*config
;
4727 mac_control
= &sp
->mac_control
;
4728 config
= &sp
->config
;
4730 if (!TASKLET_IN_USE
) {
4731 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
4732 ret
= fill_rx_buffers(sp
, i
);
4733 if (ret
== -ENOMEM
) {
4734 DBG_PRINT(ERR_DBG
, "%s: Out of ",
4736 DBG_PRINT(ERR_DBG
, "memory in tasklet\n");
4738 } else if (ret
== -EFILL
) {
4740 "%s: Rx Ring %d is full\n",
4745 clear_bit(0, (&sp
->tasklet_status
));
4750 * s2io_set_link - Set the LInk status
4751 * @data: long pointer to device private structue
4752 * Description: Sets the link status for the adapter
4755 static void s2io_set_link(unsigned long data
)
4757 nic_t
*nic
= (nic_t
*) data
;
4758 struct net_device
*dev
= nic
->dev
;
4759 XENA_dev_config_t __iomem
*bar0
= nic
->bar0
;
4763 if (test_and_set_bit(0, &(nic
->link_state
))) {
4764 /* The card is being reset, no point doing anything */
4768 subid
= nic
->pdev
->subsystem_device
;
4769 if (s2io_link_fault_indication(nic
) == MAC_RMAC_ERR_TIMER
) {
4771 * Allow a small delay for the NICs self initiated
4772 * cleanup to complete.
4777 val64
= readq(&bar0
->adapter_status
);
4778 if (verify_xena_quiescence(nic
, val64
, nic
->device_enabled_once
)) {
4779 if (LINK_IS_UP(val64
)) {
4780 val64
= readq(&bar0
->adapter_control
);
4781 val64
|= ADAPTER_CNTL_EN
;
4782 writeq(val64
, &bar0
->adapter_control
);
4783 if (CARDS_WITH_FAULTY_LINK_INDICATORS(nic
->device_type
,
4785 val64
= readq(&bar0
->gpio_control
);
4786 val64
|= GPIO_CTRL_GPIO_0
;
4787 writeq(val64
, &bar0
->gpio_control
);
4788 val64
= readq(&bar0
->gpio_control
);
4790 val64
|= ADAPTER_LED_ON
;
4791 writeq(val64
, &bar0
->adapter_control
);
4793 if (s2io_link_fault_indication(nic
) ==
4794 MAC_RMAC_ERR_TIMER
) {
4795 val64
= readq(&bar0
->adapter_status
);
4796 if (!LINK_IS_UP(val64
)) {
4797 DBG_PRINT(ERR_DBG
, "%s:", dev
->name
);
4798 DBG_PRINT(ERR_DBG
, " Link down");
4799 DBG_PRINT(ERR_DBG
, "after ");
4800 DBG_PRINT(ERR_DBG
, "enabling ");
4801 DBG_PRINT(ERR_DBG
, "device \n");
4804 if (nic
->device_enabled_once
== FALSE
) {
4805 nic
->device_enabled_once
= TRUE
;
4807 s2io_link(nic
, LINK_UP
);
4809 if (CARDS_WITH_FAULTY_LINK_INDICATORS(nic
->device_type
,
4811 val64
= readq(&bar0
->gpio_control
);
4812 val64
&= ~GPIO_CTRL_GPIO_0
;
4813 writeq(val64
, &bar0
->gpio_control
);
4814 val64
= readq(&bar0
->gpio_control
);
4816 s2io_link(nic
, LINK_DOWN
);
4818 } else { /* NIC is not Quiescent. */
4819 DBG_PRINT(ERR_DBG
, "%s: Error: ", dev
->name
);
4820 DBG_PRINT(ERR_DBG
, "device is not Quiescent\n");
4821 netif_stop_queue(dev
);
4823 clear_bit(0, &(nic
->link_state
));
4826 static void s2io_card_down(nic_t
* sp
)
4829 XENA_dev_config_t __iomem
*bar0
= sp
->bar0
;
4830 unsigned long flags
;
4831 register u64 val64
= 0;
4833 del_timer_sync(&sp
->alarm_timer
);
4834 /* If s2io_set_link task is executing, wait till it completes. */
4835 while (test_and_set_bit(0, &(sp
->link_state
))) {
4838 atomic_set(&sp
->card_state
, CARD_DOWN
);
4840 /* disable Tx and Rx traffic on the NIC */
4844 tasklet_kill(&sp
->task
);
4846 /* Check if the device is Quiescent and then Reset the NIC */
4848 val64
= readq(&bar0
->adapter_status
);
4849 if (verify_xena_quiescence(sp
, val64
, sp
->device_enabled_once
)) {
4857 "s2io_close:Device not Quiescent ");
4858 DBG_PRINT(ERR_DBG
, "adaper status reads 0x%llx\n",
4859 (unsigned long long) val64
);
4865 /* Waiting till all Interrupt handlers are complete */
4869 if (!atomic_read(&sp
->isr_cnt
))
4874 spin_lock_irqsave(&sp
->tx_lock
, flags
);
4875 /* Free all Tx buffers */
4876 free_tx_buffers(sp
);
4877 spin_unlock_irqrestore(&sp
->tx_lock
, flags
);
4879 /* Free all Rx buffers */
4880 spin_lock_irqsave(&sp
->rx_lock
, flags
);
4881 free_rx_buffers(sp
);
4882 spin_unlock_irqrestore(&sp
->rx_lock
, flags
);
4884 clear_bit(0, &(sp
->link_state
));
4887 static int s2io_card_up(nic_t
* sp
)
4890 mac_info_t
*mac_control
;
4891 struct config_param
*config
;
4892 struct net_device
*dev
= (struct net_device
*) sp
->dev
;
4894 /* Initialize the H/W I/O registers */
4895 if (init_nic(sp
) != 0) {
4896 DBG_PRINT(ERR_DBG
, "%s: H/W initialization failed\n",
4902 * Initializing the Rx buffers. For now we are considering only 1
4903 * Rx ring and initializing buffers into 30 Rx blocks
4905 mac_control
= &sp
->mac_control
;
4906 config
= &sp
->config
;
4908 for (i
= 0; i
< config
->rx_ring_num
; i
++) {
4909 if ((ret
= fill_rx_buffers(sp
, i
))) {
4910 DBG_PRINT(ERR_DBG
, "%s: Out of memory in Open\n",
4913 free_rx_buffers(sp
);
4916 DBG_PRINT(INFO_DBG
, "Buf in ring:%d is %d:\n", i
,
4917 atomic_read(&sp
->rx_bufs_left
[i
]));
4920 /* Setting its receive mode */
4921 s2io_set_multicast(dev
);
4923 /* Enable tasklet for the device */
4924 tasklet_init(&sp
->task
, s2io_tasklet
, (unsigned long) dev
);
4926 /* Enable Rx Traffic and interrupts on the NIC */
4927 if (start_nic(sp
)) {
4928 DBG_PRINT(ERR_DBG
, "%s: Starting NIC failed\n", dev
->name
);
4929 tasklet_kill(&sp
->task
);
4931 free_irq(dev
->irq
, dev
);
4932 free_rx_buffers(sp
);
4936 S2IO_TIMER_CONF(sp
->alarm_timer
, s2io_alarm_handle
, sp
, (HZ
/2));
4938 atomic_set(&sp
->card_state
, CARD_UP
);
4943 * s2io_restart_nic - Resets the NIC.
4944 * @data : long pointer to the device private structure
4946 * This function is scheduled to be run by the s2io_tx_watchdog
4947 * function after 0.5 secs to reset the NIC. The idea is to reduce
4948 * the run time of the watch dog routine which is run holding a
4952 static void s2io_restart_nic(unsigned long data
)
4954 struct net_device
*dev
= (struct net_device
*) data
;
4955 nic_t
*sp
= dev
->priv
;
4958 if (s2io_card_up(sp
)) {
4959 DBG_PRINT(ERR_DBG
, "%s: Device bring up failed\n",
4962 netif_wake_queue(dev
);
4963 DBG_PRINT(ERR_DBG
, "%s: was reset by Tx watchdog timer\n",
4969 * s2io_tx_watchdog - Watchdog for transmit side.
4970 * @dev : Pointer to net device structure
4972 * This function is triggered if the Tx Queue is stopped
4973 * for a pre-defined amount of time when the Interface is still up.
4974 * If the Interface is jammed in such a situation, the hardware is
4975 * reset (by s2io_close) and restarted again (by s2io_open) to
4976 * overcome any problem that might have been caused in the hardware.
4981 static void s2io_tx_watchdog(struct net_device
*dev
)
4983 nic_t
*sp
= dev
->priv
;
4985 if (netif_carrier_ok(dev
)) {
4986 schedule_work(&sp
->rst_timer_task
);
4991 * rx_osm_handler - To perform some OS related operations on SKB.
4992 * @sp: private member of the device structure,pointer to s2io_nic structure.
4993 * @skb : the socket buffer pointer.
4994 * @len : length of the packet
4995 * @cksum : FCS checksum of the frame.
4996 * @ring_no : the ring from which this RxD was extracted.
4998 * This function is called by the Tx interrupt serivce routine to perform
4999 * some OS related operations on the SKB before passing it to the upper
5000 * layers. It mainly checks if the checksum is OK, if so adds it to the
5001 * SKBs cksum variable, increments the Rx packet count and passes the SKB
5002 * to the upper layer. If the checksum is wrong, it increments the Rx
5003 * packet error count, frees the SKB and returns error.
5005 * SUCCESS on success and -1 on failure.
5007 static int rx_osm_handler(ring_info_t
*ring_data
, RxD_t
* rxdp
)
5009 nic_t
*sp
= ring_data
->nic
;
5010 struct net_device
*dev
= (struct net_device
*) sp
->dev
;
5011 struct sk_buff
*skb
= (struct sk_buff
*)
5012 ((unsigned long) rxdp
->Host_Control
);
5013 int ring_no
= ring_data
->ring_no
;
5014 u16 l3_csum
, l4_csum
;
5015 #ifdef CONFIG_2BUFF_MODE
5016 int buf0_len
= RXD_GET_BUFFER0_SIZE(rxdp
->Control_2
);
5017 int buf2_len
= RXD_GET_BUFFER2_SIZE(rxdp
->Control_2
);
5018 int get_block
= ring_data
->rx_curr_get_info
.block_index
;
5019 int get_off
= ring_data
->rx_curr_get_info
.offset
;
5020 buffAdd_t
*ba
= &ring_data
->ba
[get_block
][get_off
];
5021 unsigned char *buff
;
5023 u16 len
= (u16
) ((RXD_GET_BUFFER0_SIZE(rxdp
->Control_2
)) >> 48);;
5026 if (rxdp
->Control_1
& RXD_T_CODE
) {
5027 unsigned long long err
= rxdp
->Control_1
& RXD_T_CODE
;
5028 DBG_PRINT(ERR_DBG
, "%s: Rx error Value: 0x%llx\n",
5031 sp
->stats
.rx_crc_errors
++;
5032 atomic_dec(&sp
->rx_bufs_left
[ring_no
]);
5033 rxdp
->Host_Control
= 0;
5037 /* Updating statistics */
5038 rxdp
->Host_Control
= 0;
5040 sp
->stats
.rx_packets
++;
5041 #ifndef CONFIG_2BUFF_MODE
5042 sp
->stats
.rx_bytes
+= len
;
5044 sp
->stats
.rx_bytes
+= buf0_len
+ buf2_len
;
5047 #ifndef CONFIG_2BUFF_MODE
5050 buff
= skb_push(skb
, buf0_len
);
5051 memcpy(buff
, ba
->ba_0
, buf0_len
);
5052 skb_put(skb
, buf2_len
);
5055 if ((rxdp
->Control_1
& TCP_OR_UDP_FRAME
) &&
5057 l3_csum
= RXD_GET_L3_CKSUM(rxdp
->Control_1
);
5058 l4_csum
= RXD_GET_L4_CKSUM(rxdp
->Control_1
);
5059 if ((l3_csum
== L3_CKSUM_OK
) && (l4_csum
== L4_CKSUM_OK
)) {
5061 * NIC verifies if the Checksum of the received
5062 * frame is Ok or not and accordingly returns
5063 * a flag in the RxD.
5065 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
5068 * Packet with erroneous checksum, let the
5069 * upper layers deal with it.
5071 skb
->ip_summed
= CHECKSUM_NONE
;
5074 skb
->ip_summed
= CHECKSUM_NONE
;
5077 skb
->protocol
= eth_type_trans(skb
, dev
);
5078 #ifdef CONFIG_S2IO_NAPI
5079 if (sp
->vlgrp
&& RXD_GET_VLAN_TAG(rxdp
->Control_2
)) {
5080 /* Queueing the vlan frame to the upper layer */
5081 vlan_hwaccel_receive_skb(skb
, sp
->vlgrp
,
5082 RXD_GET_VLAN_TAG(rxdp
->Control_2
));
5084 netif_receive_skb(skb
);
5087 if (sp
->vlgrp
&& RXD_GET_VLAN_TAG(rxdp
->Control_2
)) {
5088 /* Queueing the vlan frame to the upper layer */
5089 vlan_hwaccel_rx(skb
, sp
->vlgrp
,
5090 RXD_GET_VLAN_TAG(rxdp
->Control_2
));
5095 dev
->last_rx
= jiffies
;
5096 atomic_dec(&sp
->rx_bufs_left
[ring_no
]);
5101 * s2io_link - stops/starts the Tx queue.
5102 * @sp : private member of the device structure, which is a pointer to the
5103 * s2io_nic structure.
5104 * @link : inidicates whether link is UP/DOWN.
5106 * This function stops/starts the Tx queue depending on whether the link
5107 * status of the NIC is is down or up. This is called by the Alarm
5108 * interrupt handler whenever a link change interrupt comes up.
5113 void s2io_link(nic_t
* sp
, int link
)
5115 struct net_device
*dev
= (struct net_device
*) sp
->dev
;
5117 if (link
!= sp
->last_link_state
) {
5118 if (link
== LINK_DOWN
) {
5119 DBG_PRINT(ERR_DBG
, "%s: Link down\n", dev
->name
);
5120 netif_carrier_off(dev
);
5122 DBG_PRINT(ERR_DBG
, "%s: Link Up\n", dev
->name
);
5123 netif_carrier_on(dev
);
5126 sp
->last_link_state
= link
;
5130 * get_xena_rev_id - to identify revision ID of xena.
5131 * @pdev : PCI Dev structure
5133 * Function to identify the Revision ID of xena.
5135 * returns the revision ID of the device.
5138 int get_xena_rev_id(struct pci_dev
*pdev
)
5142 ret
= pci_read_config_byte(pdev
, PCI_REVISION_ID
, (u8
*) & id
);
5147 * s2io_init_pci -Initialization of PCI and PCI-X configuration registers .
5148 * @sp : private member of the device structure, which is a pointer to the
5149 * s2io_nic structure.
5151 * This function initializes a few of the PCI and PCI-X configuration registers
5152 * with recommended values.
5157 static void s2io_init_pci(nic_t
* sp
)
5159 u16 pci_cmd
= 0, pcix_cmd
= 0;
5161 /* Enable Data Parity Error Recovery in PCI-X command register. */
5162 pci_read_config_word(sp
->pdev
, PCIX_COMMAND_REGISTER
,
5164 pci_write_config_word(sp
->pdev
, PCIX_COMMAND_REGISTER
,
5166 pci_read_config_word(sp
->pdev
, PCIX_COMMAND_REGISTER
,
5169 /* Set the PErr Response bit in PCI command register. */
5170 pci_read_config_word(sp
->pdev
, PCI_COMMAND
, &pci_cmd
);
5171 pci_write_config_word(sp
->pdev
, PCI_COMMAND
,
5172 (pci_cmd
| PCI_COMMAND_PARITY
));
5173 pci_read_config_word(sp
->pdev
, PCI_COMMAND
, &pci_cmd
);
5175 /* Forcibly disabling relaxed ordering capability of the card. */
5177 pci_write_config_word(sp
->pdev
, PCIX_COMMAND_REGISTER
,
5179 pci_read_config_word(sp
->pdev
, PCIX_COMMAND_REGISTER
,
5183 MODULE_AUTHOR("Raghavendra Koushik <raghavendra.koushik@neterion.com>");
5184 MODULE_LICENSE("GPL");
5185 module_param(tx_fifo_num
, int, 0);
5186 module_param(rx_ring_num
, int, 0);
5187 module_param_array(tx_fifo_len
, uint
, NULL
, 0);
5188 module_param_array(rx_ring_sz
, uint
, NULL
, 0);
5189 module_param_array(rts_frm_len
, uint
, NULL
, 0);
5190 module_param(use_continuous_tx_intrs
, int, 1);
5191 module_param(rmac_pause_time
, int, 0);
5192 module_param(mc_pause_threshold_q0q3
, int, 0);
5193 module_param(mc_pause_threshold_q4q7
, int, 0);
5194 module_param(shared_splits
, int, 0);
5195 module_param(tmac_util_period
, int, 0);
5196 module_param(rmac_util_period
, int, 0);
5197 module_param(bimodal
, bool, 0);
5198 #ifndef CONFIG_S2IO_NAPI
5199 module_param(indicate_max_pkts
, int, 0);
5201 module_param(rxsync_frequency
, int, 0);
5204 * s2io_init_nic - Initialization of the adapter .
5205 * @pdev : structure containing the PCI related information of the device.
5206 * @pre: List of PCI devices supported by the driver listed in s2io_tbl.
5208 * The function initializes an adapter identified by the pci_dec structure.
5209 * All OS related initialization including memory and device structure and
5210 * initlaization of the device private variable is done. Also the swapper
5211 * control register is initialized to enable read and write into the I/O
5212 * registers of the device.
5214 * returns 0 on success and negative on failure.
5217 static int __devinit
5218 s2io_init_nic(struct pci_dev
*pdev
, const struct pci_device_id
*pre
)
5221 struct net_device
*dev
;
5223 int dma_flag
= FALSE
;
5224 u32 mac_up
, mac_down
;
5225 u64 val64
= 0, tmp64
= 0;
5226 XENA_dev_config_t __iomem
*bar0
= NULL
;
5228 mac_info_t
*mac_control
;
5229 struct config_param
*config
;
5232 #ifdef CONFIG_S2IO_NAPI
5233 DBG_PRINT(ERR_DBG
, "NAPI support has been enabled\n");
5236 if ((ret
= pci_enable_device(pdev
))) {
5238 "s2io_init_nic: pci_enable_device failed\n");
5242 if (!pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) {
5243 DBG_PRINT(INIT_DBG
, "s2io_init_nic: Using 64bit DMA\n");
5245 if (pci_set_consistent_dma_mask
5246 (pdev
, DMA_64BIT_MASK
)) {
5248 "Unable to obtain 64bit DMA for \
5249 consistent allocations\n");
5250 pci_disable_device(pdev
);
5253 } else if (!pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) {
5254 DBG_PRINT(INIT_DBG
, "s2io_init_nic: Using 32bit DMA\n");
5256 pci_disable_device(pdev
);
5260 if (pci_request_regions(pdev
, s2io_driver_name
)) {
5261 DBG_PRINT(ERR_DBG
, "Request Regions failed\n"),
5262 pci_disable_device(pdev
);
5266 dev
= alloc_etherdev(sizeof(nic_t
));
5268 DBG_PRINT(ERR_DBG
, "Device allocation failed\n");
5269 pci_disable_device(pdev
);
5270 pci_release_regions(pdev
);
5274 pci_set_master(pdev
);
5275 pci_set_drvdata(pdev
, dev
);
5276 SET_MODULE_OWNER(dev
);
5277 SET_NETDEV_DEV(dev
, &pdev
->dev
);
5279 /* Private member variable initialized to s2io NIC structure */
5281 memset(sp
, 0, sizeof(nic_t
));
5284 sp
->high_dma_flag
= dma_flag
;
5285 sp
->device_enabled_once
= FALSE
;
5287 if ((pdev
->device
== PCI_DEVICE_ID_HERC_WIN
) ||
5288 (pdev
->device
== PCI_DEVICE_ID_HERC_UNI
))
5289 sp
->device_type
= XFRAME_II_DEVICE
;
5291 sp
->device_type
= XFRAME_I_DEVICE
;
5293 /* Initialize some PCI/PCI-X fields of the NIC. */
5297 * Setting the device configuration parameters.
5298 * Most of these parameters can be specified by the user during
5299 * module insertion as they are module loadable parameters. If
5300 * these parameters are not not specified during load time, they
5301 * are initialized with default values.
5303 mac_control
= &sp
->mac_control
;
5304 config
= &sp
->config
;
5306 /* Tx side parameters. */
5307 if (tx_fifo_len
[0] == 0)
5308 tx_fifo_len
[0] = DEFAULT_FIFO_LEN
; /* Default value. */
5309 config
->tx_fifo_num
= tx_fifo_num
;
5310 for (i
= 0; i
< MAX_TX_FIFOS
; i
++) {
5311 config
->tx_cfg
[i
].fifo_len
= tx_fifo_len
[i
];
5312 config
->tx_cfg
[i
].fifo_priority
= i
;
5315 /* mapping the QoS priority to the configured fifos */
5316 for (i
= 0; i
< MAX_TX_FIFOS
; i
++)
5317 config
->fifo_mapping
[i
] = fifo_map
[config
->tx_fifo_num
][i
];
5319 config
->tx_intr_type
= TXD_INT_TYPE_UTILZ
;
5320 for (i
= 0; i
< config
->tx_fifo_num
; i
++) {
5321 config
->tx_cfg
[i
].f_no_snoop
=
5322 (NO_SNOOP_TXD
| NO_SNOOP_TXD_BUFFER
);
5323 if (config
->tx_cfg
[i
].fifo_len
< 65) {
5324 config
->tx_intr_type
= TXD_INT_TYPE_PER_LIST
;
5328 config
->max_txds
= MAX_SKB_FRAGS
;
5330 /* Rx side parameters. */
5331 if (rx_ring_sz
[0] == 0)
5332 rx_ring_sz
[0] = SMALL_BLK_CNT
; /* Default value. */
5333 config
->rx_ring_num
= rx_ring_num
;
5334 for (i
= 0; i
< MAX_RX_RINGS
; i
++) {
5335 config
->rx_cfg
[i
].num_rxd
= rx_ring_sz
[i
] *
5336 (MAX_RXDS_PER_BLOCK
+ 1);
5337 config
->rx_cfg
[i
].ring_priority
= i
;
5340 for (i
= 0; i
< rx_ring_num
; i
++) {
5341 config
->rx_cfg
[i
].ring_org
= RING_ORG_BUFF1
;
5342 config
->rx_cfg
[i
].f_no_snoop
=
5343 (NO_SNOOP_RXD
| NO_SNOOP_RXD_BUFFER
);
5346 /* Setting Mac Control parameters */
5347 mac_control
->rmac_pause_time
= rmac_pause_time
;
5348 mac_control
->mc_pause_threshold_q0q3
= mc_pause_threshold_q0q3
;
5349 mac_control
->mc_pause_threshold_q4q7
= mc_pause_threshold_q4q7
;
5352 /* Initialize Ring buffer parameters. */
5353 for (i
= 0; i
< config
->rx_ring_num
; i
++)
5354 atomic_set(&sp
->rx_bufs_left
[i
], 0);
5356 /* Initialize the number of ISRs currently running */
5357 atomic_set(&sp
->isr_cnt
, 0);
5359 /* initialize the shared memory used by the NIC and the host */
5360 if (init_shared_mem(sp
)) {
5361 DBG_PRINT(ERR_DBG
, "%s: Memory allocation failed\n",
5364 goto mem_alloc_failed
;
5367 sp
->bar0
= ioremap(pci_resource_start(pdev
, 0),
5368 pci_resource_len(pdev
, 0));
5370 DBG_PRINT(ERR_DBG
, "%s: S2IO: cannot remap io mem1\n",
5373 goto bar0_remap_failed
;
5376 sp
->bar1
= ioremap(pci_resource_start(pdev
, 2),
5377 pci_resource_len(pdev
, 2));
5379 DBG_PRINT(ERR_DBG
, "%s: S2IO: cannot remap io mem2\n",
5382 goto bar1_remap_failed
;
5385 dev
->irq
= pdev
->irq
;
5386 dev
->base_addr
= (unsigned long) sp
->bar0
;
5388 /* Initializing the BAR1 address as the start of the FIFO pointer. */
5389 for (j
= 0; j
< MAX_TX_FIFOS
; j
++) {
5390 mac_control
->tx_FIFO_start
[j
] = (TxFIFO_element_t __iomem
*)
5391 (sp
->bar1
+ (j
* 0x00020000));
5394 /* Driver entry points */
5395 dev
->open
= &s2io_open
;
5396 dev
->stop
= &s2io_close
;
5397 dev
->hard_start_xmit
= &s2io_xmit
;
5398 dev
->get_stats
= &s2io_get_stats
;
5399 dev
->set_multicast_list
= &s2io_set_multicast
;
5400 dev
->do_ioctl
= &s2io_ioctl
;
5401 dev
->change_mtu
= &s2io_change_mtu
;
5402 SET_ETHTOOL_OPS(dev
, &netdev_ethtool_ops
);
5403 dev
->features
|= NETIF_F_HW_VLAN_TX
| NETIF_F_HW_VLAN_RX
;
5404 dev
->vlan_rx_register
= s2io_vlan_rx_register
;
5405 dev
->vlan_rx_kill_vid
= (void *)s2io_vlan_rx_kill_vid
;
5408 * will use eth_mac_addr() for dev->set_mac_address
5409 * mac address will be set every time dev->open() is called
5411 #if defined(CONFIG_S2IO_NAPI)
5412 dev
->poll
= s2io_poll
;
5416 dev
->features
|= NETIF_F_SG
| NETIF_F_IP_CSUM
;
5417 if (sp
->high_dma_flag
== TRUE
)
5418 dev
->features
|= NETIF_F_HIGHDMA
;
5420 dev
->features
|= NETIF_F_TSO
;
5423 dev
->tx_timeout
= &s2io_tx_watchdog
;
5424 dev
->watchdog_timeo
= WATCH_DOG_TIMEOUT
;
5425 INIT_WORK(&sp
->rst_timer_task
,
5426 (void (*)(void *)) s2io_restart_nic
, dev
);
5427 INIT_WORK(&sp
->set_link_task
,
5428 (void (*)(void *)) s2io_set_link
, sp
);
5430 pci_save_state(sp
->pdev
);
5432 /* Setting swapper control on the NIC, for proper reset operation */
5433 if (s2io_set_swapper(sp
)) {
5434 DBG_PRINT(ERR_DBG
, "%s:swapper settings are wrong\n",
5437 goto set_swap_failed
;
5440 /* Verify if the Herc works on the slot its placed into */
5441 if (sp
->device_type
& XFRAME_II_DEVICE
) {
5442 mode
= s2io_verify_pci_mode(sp
);
5444 DBG_PRINT(ERR_DBG
, "%s: ", __FUNCTION__
);
5445 DBG_PRINT(ERR_DBG
, " Unsupported PCI bus mode\n");
5447 goto set_swap_failed
;
5451 /* Not needed for Herc */
5452 if (sp
->device_type
& XFRAME_I_DEVICE
) {
5454 * Fix for all "FFs" MAC address problems observed on
5457 fix_mac_address(sp
);
5462 * MAC address initialization.
5463 * For now only one mac address will be read and used.
5466 val64
= RMAC_ADDR_CMD_MEM_RD
| RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD
|
5467 RMAC_ADDR_CMD_MEM_OFFSET(0 + MAC_MAC_ADDR_START_OFFSET
);
5468 writeq(val64
, &bar0
->rmac_addr_cmd_mem
);
5469 wait_for_cmd_complete(sp
);
5471 tmp64
= readq(&bar0
->rmac_addr_data0_mem
);
5472 mac_down
= (u32
) tmp64
;
5473 mac_up
= (u32
) (tmp64
>> 32);
5475 memset(sp
->def_mac_addr
[0].mac_addr
, 0, sizeof(ETH_ALEN
));
5477 sp
->def_mac_addr
[0].mac_addr
[3] = (u8
) (mac_up
);
5478 sp
->def_mac_addr
[0].mac_addr
[2] = (u8
) (mac_up
>> 8);
5479 sp
->def_mac_addr
[0].mac_addr
[1] = (u8
) (mac_up
>> 16);
5480 sp
->def_mac_addr
[0].mac_addr
[0] = (u8
) (mac_up
>> 24);
5481 sp
->def_mac_addr
[0].mac_addr
[5] = (u8
) (mac_down
>> 16);
5482 sp
->def_mac_addr
[0].mac_addr
[4] = (u8
) (mac_down
>> 24);
5484 /* Set the factory defined MAC address initially */
5485 dev
->addr_len
= ETH_ALEN
;
5486 memcpy(dev
->dev_addr
, sp
->def_mac_addr
, ETH_ALEN
);
5489 * Initialize the tasklet status and link state flags
5490 * and the card state parameter
5492 atomic_set(&(sp
->card_state
), 0);
5493 sp
->tasklet_status
= 0;
5496 /* Initialize spinlocks */
5497 spin_lock_init(&sp
->tx_lock
);
5498 #ifndef CONFIG_S2IO_NAPI
5499 spin_lock_init(&sp
->put_lock
);
5501 spin_lock_init(&sp
->rx_lock
);
5504 * SXE-002: Configure link and activity LED to init state
5507 subid
= sp
->pdev
->subsystem_device
;
5508 if ((subid
& 0xFF) >= 0x07) {
5509 val64
= readq(&bar0
->gpio_control
);
5510 val64
|= 0x0000800000000000ULL
;
5511 writeq(val64
, &bar0
->gpio_control
);
5512 val64
= 0x0411040400000000ULL
;
5513 writeq(val64
, (void __iomem
*) bar0
+ 0x2700);
5514 val64
= readq(&bar0
->gpio_control
);
5517 sp
->rx_csum
= 1; /* Rx chksum verify enabled by default */
5519 if (register_netdev(dev
)) {
5520 DBG_PRINT(ERR_DBG
, "Device registration failed\n");
5522 goto register_failed
;
5525 if (sp
->device_type
& XFRAME_II_DEVICE
) {
5526 DBG_PRINT(ERR_DBG
, "%s: Neterion Xframe II 10GbE adapter ",
5528 DBG_PRINT(ERR_DBG
, "(rev %d), Driver %s\n",
5529 get_xena_rev_id(sp
->pdev
),
5530 s2io_driver_version
);
5531 DBG_PRINT(ERR_DBG
, "MAC ADDR: %02x:%02x:%02x:%02x:%02x:%02x\n",
5532 sp
->def_mac_addr
[0].mac_addr
[0],
5533 sp
->def_mac_addr
[0].mac_addr
[1],
5534 sp
->def_mac_addr
[0].mac_addr
[2],
5535 sp
->def_mac_addr
[0].mac_addr
[3],
5536 sp
->def_mac_addr
[0].mac_addr
[4],
5537 sp
->def_mac_addr
[0].mac_addr
[5]);
5538 mode
= s2io_print_pci_mode(sp
);
5540 DBG_PRINT(ERR_DBG
, " Unsupported PCI bus mode ");
5542 goto set_swap_failed
;
5545 DBG_PRINT(ERR_DBG
, "%s: Neterion Xframe I 10GbE adapter ",
5547 DBG_PRINT(ERR_DBG
, "(rev %d), Driver %s\n",
5548 get_xena_rev_id(sp
->pdev
),
5549 s2io_driver_version
);
5550 DBG_PRINT(ERR_DBG
, "MAC ADDR: %02x:%02x:%02x:%02x:%02x:%02x\n",
5551 sp
->def_mac_addr
[0].mac_addr
[0],
5552 sp
->def_mac_addr
[0].mac_addr
[1],
5553 sp
->def_mac_addr
[0].mac_addr
[2],
5554 sp
->def_mac_addr
[0].mac_addr
[3],
5555 sp
->def_mac_addr
[0].mac_addr
[4],
5556 sp
->def_mac_addr
[0].mac_addr
[5]);
5559 /* Initialize device name */
5560 strcpy(sp
->name
, dev
->name
);
5561 if (sp
->device_type
& XFRAME_II_DEVICE
)
5562 strcat(sp
->name
, ": Neterion Xframe II 10GbE adapter");
5564 strcat(sp
->name
, ": Neterion Xframe I 10GbE adapter");
5566 /* Initialize bimodal Interrupts */
5567 sp
->config
.bimodal
= bimodal
;
5568 if (!(sp
->device_type
& XFRAME_II_DEVICE
) && bimodal
) {
5569 sp
->config
.bimodal
= 0;
5570 DBG_PRINT(ERR_DBG
,"%s:Bimodal intr not supported by Xframe I\n",
5575 * Make Link state as off at this point, when the Link change
5576 * interrupt comes the state will be automatically changed to
5579 netif_carrier_off(dev
);
5590 free_shared_mem(sp
);
5591 pci_disable_device(pdev
);
5592 pci_release_regions(pdev
);
5593 pci_set_drvdata(pdev
, NULL
);
5600 * s2io_rem_nic - Free the PCI device
5601 * @pdev: structure containing the PCI related information of the device.
5602 * Description: This function is called by the Pci subsystem to release a
5603 * PCI device and free up all resource held up by the device. This could
5604 * be in response to a Hot plug event or when the driver is to be removed
5608 static void __devexit
s2io_rem_nic(struct pci_dev
*pdev
)
5610 struct net_device
*dev
=
5611 (struct net_device
*) pci_get_drvdata(pdev
);
5615 DBG_PRINT(ERR_DBG
, "Driver Data is NULL!!\n");
5620 unregister_netdev(dev
);
5622 free_shared_mem(sp
);
5625 pci_disable_device(pdev
);
5626 pci_release_regions(pdev
);
5627 pci_set_drvdata(pdev
, NULL
);
5632 * s2io_starter - Entry point for the driver
5633 * Description: This function is the entry point for the driver. It verifies
5634 * the module loadable parameters and initializes PCI configuration space.
5637 int __init
s2io_starter(void)
5639 return pci_module_init(&s2io_driver
);
5643 * s2io_closer - Cleanup routine for the driver
5644 * Description: This function is the cleanup routine for the driver. It unregist * ers the driver.
5647 void s2io_closer(void)
5649 pci_unregister_driver(&s2io_driver
);
5650 DBG_PRINT(INIT_DBG
, "cleanup done\n");
5653 module_init(s2io_starter
);
5654 module_exit(s2io_closer
);