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Annotation of qemu/roms/ipxe/src/drivers/net/igbvf/igbvf.h, revision 1.1

1.1     ! root        1: /*******************************************************************************
        !             2: 
        !             3:   Intel(R) 82576 Virtual Function Linux driver
        !             4:   Copyright(c) 1999 - 2008 Intel Corporation.
        !             5: 
        !             6:   This program is free software; you can redistribute it and/or modify it
        !             7:   under the terms and conditions of the GNU General Public License,
        !             8:   version 2, as published by the Free Software Foundation.
        !             9: 
        !            10:   This program is distributed in the hope it will be useful, but WITHOUT
        !            11:   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
        !            12:   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
        !            13:   more details.
        !            14: 
        !            15:   You should have received a copy of the GNU General Public License along with
        !            16:   this program; if not, write to the Free Software Foundation, Inc.,
        !            17:   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
        !            18: 
        !            19:   The full GNU General Public License is included in this distribution in
        !            20:   the file called "COPYING".
        !            21: 
        !            22:   Contact Information:
        !            23:   Linux NICS <[email protected]>
        !            24:   e1000-devel Mailing List <[email protected]>
        !            25:   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
        !            26: 
        !            27: *******************************************************************************/
        !            28: 
        !            29: FILE_LICENCE ( GPL2_ONLY );
        !            30: 
        !            31: /* Linux PRO/1000 Ethernet Driver main header file */
        !            32: 
        !            33: #ifndef _IGBVF_H_
        !            34: #define _IGBVF_H_
        !            35: 
        !            36: #include "igbvf_vf.h"
        !            37: 
        !            38: /* Forward declarations */
        !            39: struct igbvf_info;
        !            40: struct igbvf_adapter;
        !            41: 
        !            42: /* Interrupt defines */
        !            43: #define IGBVF_START_ITR                    648 /* ~6000 ints/sec */
        !            44: 
        !            45: /* Tx/Rx descriptor defines */
        !            46: #define IGBVF_DEFAULT_TXD              256
        !            47: #define IGBVF_MAX_TXD                  4096
        !            48: #define IGBVF_MIN_TXD                  80
        !            49: 
        !            50: #define IGBVF_DEFAULT_RXD              256
        !            51: #define IGBVF_MAX_RXD                  4096
        !            52: #define IGBVF_MIN_RXD                  80
        !            53: 
        !            54: #define IGBVF_MIN_ITR_USECS            10 /* 100000 irq/sec */
        !            55: #define IGBVF_MAX_ITR_USECS            10000 /* 100    irq/sec */
        !            56: 
        !            57: /* RX descriptor control thresholds.
        !            58:  * PTHRESH - MAC will consider prefetch if it has fewer than this number of
        !            59:  *           descriptors available in its onboard memory.
        !            60:  *           Setting this to 0 disables RX descriptor prefetch.
        !            61:  * HTHRESH - MAC will only prefetch if there are at least this many descriptors
        !            62:  *           available in host memory.
        !            63:  *           If PTHRESH is 0, this should also be 0.
        !            64:  * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
        !            65:  *           descriptors until either it has this many to write back, or the
        !            66:  *           ITR timer expires.
        !            67:  */
        !            68: #define IGBVF_RX_PTHRESH                    16
        !            69: #define IGBVF_RX_HTHRESH                     8
        !            70: #define IGBVF_RX_WTHRESH                     1
        !            71: 
        !            72: #define IGBVF_TX_PTHRESH                     8
        !            73: #define IGBVF_TX_HTHRESH                     1
        !            74: #define IGBVF_TX_WTHRESH                     1
        !            75: 
        !            76: /* this is the size past which hardware will drop packets when setting LPE=0 */
        !            77: #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
        !            78: 
        !            79: #define IGBVF_FC_PAUSE_TIME            0x0680 /* 858 usec */
        !            80: 
        !            81: /* How many Tx Descriptors do we need to call netif_wake_queue ? */
        !            82: #define IGBVF_TX_QUEUE_WAKE    32
        !            83: /* How many Rx Buffers do we bundle into one write to the hardware ? */
        !            84: #define IGBVF_RX_BUFFER_WRITE          16 /* Must be power of 2 */
        !            85: 
        !            86: #define AUTO_ALL_MODES                 0
        !            87: #define IGBVF_EEPROM_APME              0x0400
        !            88: 
        !            89: #define IGBVF_MNG_VLAN_NONE            (-1)
        !            90: 
        !            91: enum igbvf_boards {
        !            92:        board_vf,
        !            93: };
        !            94: 
        !            95: struct igbvf_queue_stats {
        !            96:        u64 packets;
        !            97:        u64 bytes;
        !            98: };
        !            99: 
        !           100: /*
        !           101:  * wrappers around a pointer to a socket buffer,
        !           102:  * so a DMA handle can be stored along with the buffer
        !           103:  */
        !           104: struct igbvf_buffer {
        !           105: #if 0
        !           106:        dma_addr_t dma;
        !           107:        dma_addr_t page_dma;
        !           108:        struct sk_buff *skb;
        !           109:        union {
        !           110:                /* Tx */
        !           111:                struct {
        !           112:                        unsigned long time_stamp;
        !           113:                        u16 length;
        !           114:                        u16 next_to_watch;
        !           115:                };
        !           116:                /* Rx */
        !           117:                struct {
        !           118:                        struct page *page;
        !           119:                        unsigned int page_offset;
        !           120:                };
        !           121:        };
        !           122:        struct page *page;
        !           123: #endif
        !           124: };
        !           125: 
        !           126: struct igbvf_ring {
        !           127: #if 0
        !           128:        struct igbvf_adapter *adapter;  /* backlink */
        !           129:        void *desc;                     /* pointer to ring memory  */
        !           130:        dma_addr_t dma;                 /* phys address of ring    */
        !           131:        unsigned int size;              /* length of ring in bytes */
        !           132:        unsigned int count;             /* number of desc. in ring */
        !           133: 
        !           134:        u16 next_to_use;
        !           135:        u16 next_to_clean;
        !           136: 
        !           137:        u16 head;
        !           138:        u16 tail;
        !           139: 
        !           140:        /* array of buffer information structs */
        !           141:        struct igbvf_buffer *buffer_info;
        !           142:        struct napi_struct napi;
        !           143: 
        !           144:        char name[IFNAMSIZ + 5];
        !           145:        u32 eims_value;
        !           146:        u32 itr_val;
        !           147:        u16 itr_register;
        !           148:        int set_itr;
        !           149: 
        !           150:        struct sk_buff *rx_skb_top;
        !           151: 
        !           152:        struct igbvf_queue_stats stats;
        !           153: #endif
        !           154: };
        !           155: 
        !           156: /* board specific private data structure */
        !           157: struct igbvf_adapter {
        !           158: #if 0
        !           159:        struct timer_list watchdog_timer;
        !           160:        struct timer_list blink_timer;
        !           161: 
        !           162:        struct work_struct reset_task;
        !           163:        struct work_struct watchdog_task;
        !           164: 
        !           165:        const struct igbvf_info *ei;
        !           166: 
        !           167:        struct vlan_group *vlgrp;
        !           168:        u32 bd_number;
        !           169:        u32 rx_buffer_len;
        !           170:        u32 polling_interval;
        !           171:        u16 mng_vlan_id;
        !           172:        u16 link_speed;
        !           173:        u16 link_duplex;
        !           174: 
        !           175:        spinlock_t tx_queue_lock; /* prevent concurrent tail updates */
        !           176: 
        !           177:        /* track device up/down/testing state */
        !           178:        unsigned long state;
        !           179: 
        !           180:        /* Interrupt Throttle Rate */
        !           181:        u32 itr;
        !           182:        u32 itr_setting;
        !           183:        u16 tx_itr;
        !           184:        u16 rx_itr;
        !           185: 
        !           186:        /*
        !           187:         * Tx
        !           188:         */
        !           189:        struct igbvf_ring *tx_ring /* One per active queue */
        !           190:                                                ____cacheline_aligned_in_smp;
        !           191: 
        !           192:        unsigned long tx_queue_len;
        !           193:        unsigned int restart_queue;
        !           194:        u32 txd_cmd;
        !           195: 
        !           196:        bool detect_tx_hung;
        !           197:        u8 tx_timeout_factor;
        !           198: 
        !           199:        unsigned int total_tx_bytes;
        !           200:        unsigned int total_tx_packets;
        !           201:        unsigned int total_rx_bytes;
        !           202:        unsigned int total_rx_packets;
        !           203: 
        !           204:        /* Tx stats */
        !           205:        u32 tx_timeout_count;
        !           206:        u32 tx_fifo_head;
        !           207:        u32 tx_head_addr;
        !           208:        u32 tx_fifo_size;
        !           209:        u32 tx_dma_failed;
        !           210: 
        !           211:        /*
        !           212:         * Rx
        !           213:         */
        !           214:        struct igbvf_ring *rx_ring;
        !           215: 
        !           216:        /* Rx stats */
        !           217:        u64 hw_csum_err;
        !           218:        u64 hw_csum_good;
        !           219:        u64 rx_hdr_split;
        !           220:        u32 alloc_rx_buff_failed;
        !           221:        u32 rx_dma_failed;
        !           222: 
        !           223:        unsigned int rx_ps_hdr_size;
        !           224:        u32 max_frame_size;
        !           225:        u32 min_frame_size;
        !           226: 
        !           227:        /* OS defined structs */
        !           228:        struct net_device *netdev;
        !           229:        struct pci_dev *pdev;
        !           230:        struct net_device_stats net_stats;
        !           231:        spinlock_t stats_lock;      /* prevent concurrent stats updates */
        !           232: 
        !           233:        /* structs defined in e1000_hw.h */
        !           234:        struct e1000_hw hw;
        !           235: 
        !           236:        /* The VF counters don't clear on read so we have to get a base
        !           237:         * count on driver start up and always subtract that base on
        !           238:         * on the first update, thus the flag..
        !           239:         */
        !           240:        struct e1000_vf_stats stats;
        !           241:        u64 zero_base;
        !           242: 
        !           243:        struct igbvf_ring test_tx_ring;
        !           244:        struct igbvf_ring test_rx_ring;
        !           245:        u32 test_icr;
        !           246: 
        !           247:        u32 msg_enable;
        !           248:        struct msix_entry *msix_entries;
        !           249:        int int_mode;
        !           250:        u32 eims_enable_mask;
        !           251:        u32 eims_other;
        !           252:        u32 int_counter0;
        !           253:        u32 int_counter1;
        !           254: 
        !           255:        u32 eeprom_wol;
        !           256:        u32 wol;
        !           257:        u32 pba;
        !           258: 
        !           259:        bool fc_autoneg;
        !           260: 
        !           261:        unsigned long led_status;
        !           262: 
        !           263:        unsigned int flags;
        !           264:        unsigned long last_reset;
        !           265:        u32 *config_space;
        !           266: #endif
        !           267:         /* OS defined structs */
        !           268:         struct net_device *netdev;
        !           269:         struct pci_device *pdev;
        !           270:         struct net_device_stats net_stats;
        !           271: 
        !           272:         /* structs defined in e1000_hw.h */
        !           273:         struct e1000_hw hw;
        !           274: 
        !           275:         u32 min_frame_size;
        !           276:         u32 max_frame_size;
        !           277: 
        !           278:         u32 max_hw_frame_size;
        !           279: 
        !           280: #define NUM_TX_DESC     8
        !           281: #define NUM_RX_DESC     8
        !           282: 
        !           283:         struct io_buffer *tx_iobuf[NUM_TX_DESC];
        !           284:         struct io_buffer *rx_iobuf[NUM_RX_DESC];
        !           285: 
        !           286:         union e1000_adv_tx_desc *tx_base;
        !           287:         union e1000_adv_rx_desc *rx_base;
        !           288: 
        !           289:         uint32_t tx_ring_size;
        !           290:         uint32_t rx_ring_size;
        !           291: 
        !           292:         uint32_t tx_head;
        !           293:         uint32_t tx_tail;
        !           294:         uint32_t tx_fill_ctr;
        !           295: 
        !           296:         uint32_t rx_curr;
        !           297: 
        !           298:         uint32_t ioaddr;
        !           299:         uint32_t irqno;
        !           300: 
        !           301:         uint32_t tx_int_delay;
        !           302:         uint32_t tx_abs_int_delay;
        !           303:         uint32_t txd_cmd;
        !           304: };
        !           305: 
        !           306: struct igbvf_info {
        !           307:        enum e1000_mac_type     mac;
        !           308:        unsigned int            flags;
        !           309:        u32                     pba;
        !           310:        void                    (*init_ops)(struct e1000_hw *);
        !           311:        s32                     (*get_variants)(struct igbvf_adapter *);
        !           312: };
        !           313: 
        !           314: /* hardware capability, feature, and workaround flags */
        !           315: #define IGBVF_FLAG_RX_CSUM_DISABLED       (1 << 0)
        !           316: 
        !           317: #define IGBVF_DESC_UNUSED(R) \
        !           318:        ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
        !           319:        (R)->next_to_clean - (R)->next_to_use - 1)
        !           320: 
        !           321: #define IGBVF_RX_DESC_ADV(R, i)            \
        !           322:        (&(((union e1000_adv_rx_desc *)((R).desc))[i]))
        !           323: #define IGBVF_TX_DESC_ADV(R, i)            \
        !           324:        (&(((union e1000_adv_tx_desc *)((R).desc))[i]))
        !           325: #define IGBVF_TX_CTXTDESC_ADV(R, i)        \
        !           326:        (&(((struct e1000_adv_tx_context_desc *)((R).desc))[i]))
        !           327: 
        !           328: enum igbvf_state_t {
        !           329:        __IGBVF_TESTING,
        !           330:        __IGBVF_RESETTING,
        !           331:        __IGBVF_DOWN
        !           332: };
        !           333: 
        !           334: enum latency_range {
        !           335:        lowest_latency = 0,
        !           336:        low_latency = 1,
        !           337:        bulk_latency = 2,
        !           338:        latency_invalid = 255
        !           339: };
        !           340: 
        !           341: extern char igbvf_driver_name[];
        !           342: extern const char igbvf_driver_version[];
        !           343: 
        !           344: extern void igbvf_check_options(struct igbvf_adapter *adapter);
        !           345: extern void igbvf_set_ethtool_ops(struct net_device *netdev);
        !           346: #ifdef ETHTOOL_OPS_COMPAT
        !           347: extern int ethtool_ioctl(struct ifreq *ifr);
        !           348: #endif
        !           349: 
        !           350: extern int igbvf_up(struct igbvf_adapter *adapter);
        !           351: extern void igbvf_down(struct igbvf_adapter *adapter);
        !           352: extern void igbvf_reinit_locked(struct igbvf_adapter *adapter);
        !           353: extern void igbvf_reset(struct igbvf_adapter *adapter);
        !           354: extern int igbvf_setup_rx_resources(struct igbvf_adapter *adapter);
        !           355: extern int igbvf_setup_tx_resources(struct igbvf_adapter *adapter);
        !           356: extern void igbvf_free_rx_resources(struct igbvf_adapter *adapter);
        !           357: extern void igbvf_free_tx_resources(struct igbvf_adapter *adapter);
        !           358: extern void igbvf_update_stats(struct igbvf_adapter *adapter);
        !           359: extern void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter);
        !           360: extern void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter);
        !           361: 
        !           362: extern unsigned int copybreak;
        !           363: 
        !           364: static inline u32 __er32(struct e1000_hw *hw, unsigned long reg)
        !           365: {
        !           366:        return readl(hw->hw_addr + reg);
        !           367: }
        !           368: 
        !           369: static inline void __ew32(struct e1000_hw *hw, unsigned long reg, u32 val)
        !           370: {
        !           371:        writel(val, hw->hw_addr + reg);
        !           372: }
        !           373: #define er32(reg)      E1000_READ_REG(hw, E1000_##reg)
        !           374: #define ew32(reg,val)  E1000_WRITE_REG(hw, E1000_##reg, (val))
        !           375: #define e1e_flush()    er32(STATUS)
        !           376: 
        !           377: #endif /* _IGBVF_H_ */

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