6 * Generate TX index update each time, when TX ring is closed.
7 * Normally, this is not useful, because results in more dma (and irqs
8 * without TX_COAL_INTS_ONLY).
10 #define USE_TX_COAL_NOW 0
15 * The Tigon uses 64-bit host addresses, regardless of their actual
16 * length, and it expects a big-endian format. For 32 bit systems the
17 * upper 32 bits of the address are simply ignored (zero), however for
18 * little endian 64 bit systems (Alpha) this looks strange with the
19 * two parts of the address word being swapped.
21 * The addresses are split in two 32 bit words for all architectures
22 * as some of them are in PCI shared memory and it is necessary to use
23 * readl/writel to access them.
25 * The addressing code is derived from Pete Wyckoff's work, but
26 * modified to deal properly with readl/writel usage.
30 u32 pad0[16]; /* PCI control registers */
32 u32 HostCtrl; /* 0x40 */
37 u32 MiscCfg; /* 0x50 */
43 u32 pad3[2]; /* 0x60 */
48 u32 pad4[12]; /* 0x70 */
50 u32 DmaWriteState; /* 0xa0 */
52 u32 DmaReadState; /* 0xb0 */
58 u32 pad7[8]; /* 0x120 */
60 u32 CpuCtrl; /* 0x140 */
65 u32 SramAddr; /* 0x154 */
70 u32 MacRxState; /* 0x220 */
74 u32 CpuBCtrl; /* 0x240 */
79 u32 SramBAddr; /* 0x254 */
84 u32 pad13[32]; /* 0x400 */
87 u32 Mb0Hi; /* 0x500 */
122 u32 MacAddrHi; /* 0x600 */
126 u32 MultiCastHi; /* 0x610 */
130 u32 DmaWriteCfg; /* 0x620 */
134 u32 TuneRxCoalTicks;/* 0x630 */
138 u32 TuneMaxRxDesc; /* 0x640 */
142 u32 TracePtr; /* 0x650 */
146 u32 IfMtu; /* 0x660 */
150 u32 pad16[4]; /* 0x670 */
151 u32 RxRetCsm; /* 0x680 */
155 u32 CmdRng[64]; /* 0x700 */
166 #define ACE_WINDOW_SIZE 0x800
168 #define ACE_JUMBO_MTU 9000
169 #define ACE_STD_MTU 1500
171 #define ACE_TRACE_SIZE 0x8000
174 * Host control register bits.
179 #define HW_RESET 0x08
180 #define BYTE_SWAP 0x10
181 #define WORD_SWAP 0x20
182 #define MASK_INTS 0x40
185 * Local control register bits.
188 #define EEPROM_DATA_IN 0x800000
189 #define EEPROM_DATA_OUT 0x400000
190 #define EEPROM_WRITE_ENABLE 0x200000
191 #define EEPROM_CLK_OUT 0x100000
193 #define EEPROM_BASE 0xa0000000
195 #define EEPROM_WRITE_SELECT 0xa0
196 #define EEPROM_READ_SELECT 0xa1
198 #define SRAM_BANK_512K 0x200
202 * udelay() values for when clocking the eeprom
204 #define ACE_SHORT_DELAY 2
205 #define ACE_LONG_DELAY 4
212 #define SYNC_SRAM_TIMING 0x100000
219 #define CPU_RESET 0x01
220 #define CPU_TRACE 0x02
221 #define CPU_PROM_FAILED 0x10
222 #define CPU_HALT 0x00010000
223 #define CPU_HALTED 0xffff0000
230 #define DMA_READ_MAX_4 0x04
231 #define DMA_READ_MAX_16 0x08
232 #define DMA_READ_MAX_32 0x0c
233 #define DMA_READ_MAX_64 0x10
234 #define DMA_READ_MAX_128 0x14
235 #define DMA_READ_MAX_256 0x18
236 #define DMA_READ_MAX_1K 0x1c
237 #define DMA_WRITE_MAX_4 0x20
238 #define DMA_WRITE_MAX_16 0x40
239 #define DMA_WRITE_MAX_32 0x60
240 #define DMA_WRITE_MAX_64 0x80
241 #define DMA_WRITE_MAX_128 0xa0
242 #define DMA_WRITE_MAX_256 0xc0
243 #define DMA_WRITE_MAX_1K 0xe0
244 #define DMA_READ_WRITE_MASK 0xfc
245 #define MEM_READ_MULTIPLE 0x00020000
246 #define PCI_66MHZ 0x00080000
247 #define PCI_32BIT 0x00100000
248 #define DMA_WRITE_ALL_ALIGN 0x00800000
249 #define READ_CMD_MEM 0x06000000
250 #define WRITE_CMD_MEM 0x70000000
257 #define ACE_BYTE_SWAP_BD 0x02
258 #define ACE_WORD_SWAP_BD 0x04 /* not actually used */
259 #define ACE_WARN 0x08
260 #define ACE_BYTE_SWAP_DMA 0x10
261 #define ACE_NO_JUMBO_FRAG 0x200
262 #define ACE_FATAL 0x40000000
269 #define DMA_THRESH_1W 0x10
270 #define DMA_THRESH_2W 0x20
271 #define DMA_THRESH_4W 0x40
272 #define DMA_THRESH_8W 0x80
273 #define DMA_THRESH_16W 0x100
274 #define DMA_THRESH_32W 0x0 /* not described in doc, but exists. */
281 #define TICKS_PER_SEC 1000000
288 #define LNK_PREF 0x00008000
289 #define LNK_10MB 0x00010000
290 #define LNK_100MB 0x00020000
291 #define LNK_1000MB 0x00040000
292 #define LNK_FULL_DUPLEX 0x00080000
293 #define LNK_HALF_DUPLEX 0x00100000
294 #define LNK_TX_FLOW_CTL_Y 0x00200000
295 #define LNK_NEG_ADVANCED 0x00400000
296 #define LNK_RX_FLOW_CTL_Y 0x00800000
297 #define LNK_NIC 0x01000000
298 #define LNK_JAM 0x02000000
299 #define LNK_JUMBO 0x04000000
300 #define LNK_ALTEON 0x08000000
301 #define LNK_NEG_FCTL 0x10000000
302 #define LNK_NEGOTIATE 0x20000000
303 #define LNK_ENABLE 0x40000000
304 #define LNK_UP 0x80000000
311 #define EVT_RING_ENTRIES 256
312 #define EVT_RING_SIZE (EVT_RING_ENTRIES * sizeof(struct event))
315 #ifdef __LITTLE_ENDIAN_BITFIELD
332 #define E_FW_RUNNING 0x01
333 #define E_STATS_UPDATED 0x04
335 #define E_STATS_UPDATE 0x04
337 #define E_LNK_STATE 0x06
338 #define E_C_LINK_UP 0x01
339 #define E_C_LINK_DOWN 0x02
340 #define E_C_LINK_10_100 0x03
343 #define E_C_ERR_INVAL_CMD 0x01
344 #define E_C_ERR_UNIMP_CMD 0x02
345 #define E_C_ERR_BAD_CFG 0x03
347 #define E_MCAST_LIST 0x08
348 #define E_C_MCAST_ADDR_ADD 0x01
349 #define E_C_MCAST_ADDR_DEL 0x02
351 #define E_RESET_JUMBO_RNG 0x09
358 #define CMD_RING_ENTRIES 64
361 #ifdef __LITTLE_ENDIAN_BITFIELD
373 #define C_HOST_STATE 0x01
374 #define C_C_STACK_UP 0x01
375 #define C_C_STACK_DOWN 0x02
377 #define C_FDR_FILTERING 0x02
378 #define C_C_FDR_FILT_ENABLE 0x01
379 #define C_C_FDR_FILT_DISABLE 0x02
381 #define C_SET_RX_PRD_IDX 0x03
382 #define C_UPDATE_STATS 0x04
383 #define C_RESET_JUMBO_RNG 0x05
384 #define C_ADD_MULTICAST_ADDR 0x08
385 #define C_DEL_MULTICAST_ADDR 0x09
387 #define C_SET_PROMISC_MODE 0x0a
388 #define C_C_PROMISC_ENABLE 0x01
389 #define C_C_PROMISC_DISABLE 0x02
391 #define C_LNK_NEGOTIATION 0x0b
392 #define C_C_NEGOTIATE_BOTH 0x00
393 #define C_C_NEGOTIATE_GIG 0x01
394 #define C_C_NEGOTIATE_10_100 0x02
396 #define C_SET_MAC_ADDR 0x0c
397 #define C_CLEAR_PROFILE 0x0d
399 #define C_SET_MULTICAST_MODE 0x0e
400 #define C_C_MCAST_ENABLE 0x01
401 #define C_C_MCAST_DISABLE 0x02
403 #define C_CLEAR_STATS 0x0f
404 #define C_SET_RX_JUMBO_PRD_IDX 0x10
405 #define C_REFRESH_STATS 0x11
411 #define BD_FLG_TCP_UDP_SUM 0x01
412 #define BD_FLG_IP_SUM 0x02
413 #define BD_FLG_END 0x04
414 #define BD_FLG_MORE 0x08
415 #define BD_FLG_JUMBO 0x10
416 #define BD_FLG_UCAST 0x20
417 #define BD_FLG_MCAST 0x40
418 #define BD_FLG_BCAST 0x60
419 #define BD_FLG_TYP_MASK 0x60
420 #define BD_FLG_IP_FRAG 0x80
421 #define BD_FLG_IP_FRAG_END 0x100
422 #define BD_FLG_VLAN_TAG 0x200
423 #define BD_FLG_FRAME_ERROR 0x400
424 #define BD_FLG_COAL_NOW 0x800
425 #define BD_FLG_MINI 0x1000
429 * Ring Control block flags
431 #define RCB_FLG_TCP_UDP_SUM 0x01
432 #define RCB_FLG_IP_SUM 0x02
433 #define RCB_FLG_NO_PSEUDO_HDR 0x08
434 #define RCB_FLG_VLAN_ASSIST 0x10
435 #define RCB_FLG_COAL_INT_ONLY 0x20
436 #define RCB_FLG_TX_HOST_RING 0x40
437 #define RCB_FLG_IEEE_SNAP_SUM 0x80
438 #define RCB_FLG_EXT_RX_BD 0x100
439 #define RCB_FLG_RNG_DISABLE 0x200
443 * TX ring - maximum TX ring entries for Tigon I's is 128
445 #define MAX_TX_RING_ENTRIES 256
446 #define TIGON_I_TX_RING_ENTRIES 128
447 #define TX_RING_SIZE (MAX_TX_RING_ENTRIES * sizeof(struct tx_desc))
448 #define TX_RING_BASE 0x3800
455 * This is in PCI shared mem and must be accessed with readl/writel
474 #define RX_STD_RING_ENTRIES 512
475 #define RX_STD_RING_SIZE (RX_STD_RING_ENTRIES * sizeof(struct rx_desc))
477 #define RX_JUMBO_RING_ENTRIES 256
478 #define RX_JUMBO_RING_SIZE (RX_JUMBO_RING_ENTRIES *sizeof(struct rx_desc))
480 #define RX_MINI_RING_ENTRIES 1024
481 #define RX_MINI_RING_SIZE (RX_MINI_RING_ENTRIES *sizeof(struct rx_desc))
483 #define RX_RETURN_RING_ENTRIES 2048
484 #define RX_RETURN_RING_SIZE (RX_MAX_RETURN_RING_ENTRIES * \
485 sizeof(struct rx_desc))
489 #ifdef __LITTLE_ENDIAN
496 #ifdef __LITTLE_ENDIAN
503 #ifdef __LITTLE_ENDIAN
510 #ifdef __LITTLE_ENDIAN
523 * This struct is shared with the NIC firmware.
527 #ifdef __LITTLE_ENDIAN
538 struct ace_mac_stats {
576 struct ring_ctrl evt_ctrl;
577 struct ring_ctrl cmd_ctrl;
578 struct ring_ctrl tx_ctrl;
579 struct ring_ctrl rx_std_ctrl;
580 struct ring_ctrl rx_jumbo_ctrl;
581 struct ring_ctrl rx_mini_ctrl;
582 struct ring_ctrl rx_return_ctrl;
584 aceaddr rx_ret_prd_ptr;
592 DECLARE_PCI_UNMAP_ADDR(mapping)
597 * Funny... As soon as we add maplen on alpha, it starts to work
598 * much slower. Hmm... is it because struct does not fit to one cacheline?
599 * So, split tx_ring_info.
601 struct tx_ring_info {
603 DECLARE_PCI_UNMAP_ADDR(mapping)
604 DECLARE_PCI_UNMAP_LEN(maplen)
609 * struct ace_skb holding the rings of skb's. This is an awful lot of
610 * pointers, but I don't see any other smart mode to do this in an
611 * efficient manner ;-(
615 struct tx_ring_info tx_skbuff[MAX_TX_RING_ENTRIES];
616 struct ring_info rx_std_skbuff[RX_STD_RING_ENTRIES];
617 struct ring_info rx_mini_skbuff[RX_MINI_RING_ENTRIES];
618 struct ring_info rx_jumbo_skbuff[RX_JUMBO_RING_ENTRIES];
623 * Struct private for the AceNIC.
625 * Elements are grouped so variables used by the tx handling goes
626 * together, and will go into the same cache lines etc. in order to
627 * avoid cache line contention between the rx and tx handling on SMP.
629 * Frequently accessed variables are put at the beginning of the
630 * struct to help the compiler generate better/shorter code.
634 struct ace_info *info;
635 struct ace_regs __iomem *regs; /* register base */
637 dma_addr_t info_dma; /* 32/64 bit */
640 int promisc, mcast_all;
645 struct tx_desc *tx_ring;
647 volatile u32 tx_ret_csm;
653 unsigned long std_refill_busy
654 __attribute__ ((aligned (SMP_CACHE_BYTES)));
655 unsigned long mini_refill_busy, jumbo_refill_busy;
656 atomic_t cur_rx_bufs;
657 atomic_t cur_mini_bufs;
658 atomic_t cur_jumbo_bufs;
659 u32 rx_std_skbprd, rx_mini_skbprd, rx_jumbo_skbprd;
662 struct rx_desc *rx_std_ring;
663 struct rx_desc *rx_jumbo_ring;
664 struct rx_desc *rx_mini_ring;
665 struct rx_desc *rx_return_ring;
668 struct vlan_group *vlgrp;
671 int tasklet_pending, jumbo;
672 struct tasklet_struct ace_tasklet;
674 struct event *evt_ring;
676 volatile u32 *evt_prd, *rx_ret_prd, *tx_csm;
678 dma_addr_t tx_ring_dma; /* 32/64 bit */
679 dma_addr_t rx_ring_base_dma;
680 dma_addr_t evt_ring_dma;
681 dma_addr_t evt_prd_dma, rx_ret_prd_dma, tx_csm_dma;
683 unsigned char *trace_buf;
684 struct pci_dev *pdev;
685 struct net_device *next;
686 volatile int fw_running;
692 spinlock_t debug_lock
693 __attribute__ ((aligned (SMP_CACHE_BYTES)));
694 u32 last_tx, last_std_rx, last_mini_rx;
704 #define TX_RESERVED MAX_SKB_FRAGS
706 static inline int tx_space (struct ace_private *ap, u32 csm, u32 prd)
708 return (csm - prd - 1) & (ACE_TX_RING_ENTRIES(ap) - 1);
711 #define tx_free(ap) tx_space((ap)->tx_ret_csm, (ap)->tx_prd, ap)
712 #define tx_ring_full(ap, csm, prd) (tx_space(ap, csm, prd) <= TX_RESERVED)
714 static inline void set_aceaddr(aceaddr *aa, dma_addr_t addr)
716 u64 baddr = (u64) addr;
717 aa->addrlo = baddr & 0xffffffff;
718 aa->addrhi = baddr >> 32;
723 static inline void ace_set_txprd(struct ace_regs __iomem *regs,
724 struct ace_private *ap, u32 value)
728 spin_lock_irqsave(&ap->debug_lock, flags);
729 writel(value, ®s->TxPrd);
730 if (value == ap->last_tx)
731 printk(KERN_ERR "AceNIC RACE ALERT! writing identical value "
732 "to tx producer (%i)\n", value);
734 spin_unlock_irqrestore(&ap->debug_lock, flags);
736 writel(value, ®s->TxPrd);
742 static inline void ace_mask_irq(struct net_device *dev)
744 struct ace_private *ap = netdev_priv(dev);
745 struct ace_regs __iomem *regs = ap->regs;
747 if (ACE_IS_TIGON_I(ap))
748 writel(1, ®s->MaskInt);
750 writel(readl(®s->HostCtrl) | MASK_INTS, ®s->HostCtrl);
752 ace_sync_irq(dev->irq);
756 static inline void ace_unmask_irq(struct net_device *dev)
758 struct ace_private *ap = netdev_priv(dev);
759 struct ace_regs __iomem *regs = ap->regs;
761 if (ACE_IS_TIGON_I(ap))
762 writel(0, ®s->MaskInt);
764 writel(readl(®s->HostCtrl) & ~MASK_INTS, ®s->HostCtrl);
771 static int ace_init(struct net_device *dev);
772 static void ace_load_std_rx_ring(struct ace_private *ap, int nr_bufs);
773 static void ace_load_mini_rx_ring(struct ace_private *ap, int nr_bufs);
774 static void ace_load_jumbo_rx_ring(struct ace_private *ap, int nr_bufs);
775 static irqreturn_t ace_interrupt(int irq, void *dev_id);
776 static int ace_load_firmware(struct net_device *dev);
777 static int ace_open(struct net_device *dev);
778 static netdev_tx_t ace_start_xmit(struct sk_buff *skb,
779 struct net_device *dev);
780 static int ace_close(struct net_device *dev);
781 static void ace_tasklet(unsigned long dev);
782 static void ace_dump_trace(struct ace_private *ap);
783 static void ace_set_multicast_list(struct net_device *dev);
784 static int ace_change_mtu(struct net_device *dev, int new_mtu);
785 static int ace_set_mac_addr(struct net_device *dev, void *p);
786 static void ace_set_rxtx_parms(struct net_device *dev, int jumbo);
787 static int ace_allocate_descriptors(struct net_device *dev);
788 static void ace_free_descriptors(struct net_device *dev);
789 static void ace_init_cleanup(struct net_device *dev);
790 static struct net_device_stats *ace_get_stats(struct net_device *dev);
791 static int read_eeprom_byte(struct net_device *dev, unsigned long offset);
793 static void ace_vlan_rx_register(struct net_device *dev, struct vlan_group *grp);
796 #endif /* _ACENIC_H_ */