source: bootcd/isolinux/syslinux-6.03/gpxe/src/drivers/net/eepro100.h

Last change on this file was e16e8f2, checked in by Edwin Eefting <edwin@datux.nl>, 3 years ago

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[e16e8f2]1
2#ifndef __EEPRO100_H_
3#define __EEPRO100_H_
4
5FILE_LICENCE ( GPL2_OR_LATER );
6
7#define CONGENB         0       /* Enable congestion control in the DP83840. */
8#define TX_FIFO         8       /* Tx FIFO threshold in 4 byte units, 0-15 */
9#define RX_FIFO         8       /* Rx FIFO threshold, default 32 bytes. */
10#define TX_DMA_COUNT    0       /* Tx DMA burst length, 0-127, default 0. */
11#define RX_DMA_COUNT    0       /* Rx DMA length, 0 means no preemption. */
12#define CU_CMD_TIMEOUT  1000    /* CU command accept timeout in microseconds */
13#define LINK_CHECK_PERIOD 1000  /* # of poll() calls between link checks */
14
15#define RFD_PACKET_LEN  1518
16#define RFD_IOB_LEN     1536
17#define RFD_HEADER_LEN  16
18#define CB_ALIGN        2       /* Alignment of command blocks */
19
20#define RFD_COUNT       4
21#define TCB_COUNT       4
22#define RX_RING_BYTES   ( RFD_COUNT * sizeof ( struct ifec_rfd ) )
23#define TX_RING_BYTES   ( TCB_COUNT * sizeof ( struct ifec_tcb ) )
24
25/* some EEPROM addresses */
26#define EEPROM_ADDR_MAC_0               0
27#define EEPROM_ADDR_MDIO_REGISTER       6
28
29/* Control / Status Register byte offsets - SDM Table 11 */
30enum CSROffsets {
31        SCBStatus=0,             SCBCmd=2,              SCBPointer = 4,
32        CSRPort=8,               CSRFlash=12,           CSREeprom = 14,
33        CSRCtrlMDI=16,           CSREarlyRx=20
34};
35
36/* System Control Block Command Word - SDM Table 12 */
37enum SCBCmdBits {
38        /* SCB Interrupt Masks - SDM Table 14 */
39        SCBMaskCmdDone=0x8000,   SCBMaskRxDone=0x4000,  SCBMaskCmdIdle=0x2000,
40        SCBMaskRxSuspend=0x1000, SCBMaskEarlyRx=0x0800, SCBMaskFlowCtl=0x0400,
41        SCBTriggerIntr=0x0200,   SCBMaskAll=0x0100,
42        /* SCB Control Commands - SDM Table 14-16 */
43        CUStart=0x0010,          CUResume=0x0020,       CUStatsAddr=0x0040,
44        CUShowStats=0x0050,      CUCmdBase=0x0060,      CUDumpStats=0x0070,
45        RUStart=0x0001,          RUResume=0x0002,       RUAbort=0x0004,
46        RUAddrLoad=0x0006,       RUResumeNoResources=0x0007
47};
48
49enum SCBPortCmds {
50        PortReset=0, PortSelfTest=1, PortPartialReset=2, PortDump=3
51};
52
53/* Action Commands - SDM Table 14,37 */
54enum ActionCommands {
55        CmdNOp = 0,              CmdIASetup = 1,        CmdConfigure = 2,
56        CmdMulticastList = 3,    CmdTx = 4,             CmdTDR = 5,
57        CmdDump = 6,             CmdDiagnose = 7,
58        /* And some extra flags: */
59        CmdEndOfList = 0x8000,
60        CmdSuspend = 0x4000,     CmdIntr = 0x2000,      CmdTxFlex = 0x0008
61};
62
63enum TCBBits {
64        TCB_C=0x8000,            TCB_OK=0x2000,         TCB_U=0x1000
65};
66
67enum RFDBits {
68        /* Status Word Bits */
69        RFDRxCol=0x0001,         RFDIAMatch=0x0002,     RFDNoMatch=0x0004,
70        RFDReserved3=0x0008,     RFDRxErr=0x0010,       RFDEthType=0x0020,
71        RFDReserved6=0x0040,     RFDShort=0x0080,       RFDDMAOverrun=0x0100,
72        RFDNoBufs=0x0200,        RFDCRCAlign=0x0400,    RFDCRCError=0x0800,
73        RFDReserved12=0x1000,    RFD_OK=0x2000,         RFDComplete=0x8000,
74        /* Command Word Bits */
75        //RFD_SF=0x0008,           RFDSuspend=0x4000,     RFDEndOfList=0x8000,
76        /* Other */
77        RFDMaskCount=0x3FFF
78};
79
80enum phy_chips {
81        NonSuchPhy=0,            I82553AB,              I82553C,
82        I82503,                  DP83840,               S80C240,
83        S80C24,                  PhyUndefined,          DP83840A=10
84};
85
86/* Serial EEPROM section.
87   A "bit" grungy, but we work our way through bit-by-bit :->. */
88/*  EEPROM_Ctrl bits. */
89#define EE_SHIFT_CLK    0x01    /* EEPROM shift clock. */
90#define EE_CS           0x02    /* EEPROM chip select. */
91#define EE_DATA_WRITE   0x04    /* EEPROM chip data in. */
92#define EE_DATA_READ    0x08    /* EEPROM chip data out. */
93#define EE_ENB          ( 0x4800 | EE_CS )
94
95/* Elements of the dump_statistics block. This block must be lword aligned. */
96struct ifec_stats {
97        u32
98        tx_good_frames,          tx_coll16_errs,        tx_late_colls,
99        tx_underruns,            tx_lost_carrier,       tx_deferred,
100        tx_one_colls,            tx_multi_colls,        tx_total_colls,
101        rx_good_frames,          rx_crc_errs,           rx_align_errs,
102        rx_resource_errs,        rx_overrun_errs,       rx_colls_errs,
103        rx_runt_errs,            done_marker;
104};
105
106struct ifec_tcb {                  /* A Transmit Command Block & TBD. Must be */
107        volatile s16 status;       /*             word (even address) aligned */
108        u16          command;
109        u32          link;         /* PHYSICAL next ifec_tcb, doesn't change */
110        u32          tbda_addr;    /* TBD Array, points to TBD below */
111        s32          count;        /* # of TBD, Tx start thresh., etc. */
112        /* The following constitutes a Transmit Buffer Descriptor (TBD).
113         * TBDs must be aligned on an even address (word-aligned). */
114        u32          tbd_addr0;    /* PHYSICAL ptr to Tx data */
115        s32          tbd_size0;    /* Length of Tx data */
116        /* Driver-specific data; not part of TCB format. */
117        struct io_buffer *iob;     /* Exists from tx() to completion poll() */
118        struct ifec_tcb  *next;    /* VIRTUAL next ifec_tcb, doesn't change */
119};
120
121struct ifec_rfd {              /* A Receive Frame Descriptor. Must be aligned */
122        volatile s16 status;   /*           on a physical word (even address) */
123        s16          command;
124        u32          link;          /* PHYSICAL next ifec_rfd, doesn't change */
125        u32          rx_buf_addr;   /* Unused. Flex rx mode is not documented */
126        u16          count;         /*                  and may be impossible */
127        u16          size;
128        char         packet[RFD_PACKET_LEN];
129};
130
131struct ifec_ias {              /* Individual Address Setup command block. */
132        volatile s16 status;   /* Must be word (even address) aligned. */
133        u16          command;
134        u32          link;     /* PHYSICAL next command block to process */
135        u8           ia[6];
136};
137
138struct ifec_cfg {                   /* The configure command format. */
139        volatile s16 status;
140        u16          command;
141        u32          link;          /* PHYSICAL next command block to process */
142        u8           byte[22];      /* 22 configuration bytes */
143};
144
145struct ifec_private {
146        unsigned long         ioaddr;
147        struct ifec_stats     stats;
148        unsigned short        mdio_register;
149
150        struct ifec_tcb      *tcbs;
151        struct ifec_rfd      *rfds[RFD_COUNT];
152        struct ifec_tcb      *tcb_head, *tcb_tail;
153        struct io_buffer     *tx_iobs[TCB_COUNT];
154        struct io_buffer     *rx_iobs[RFD_COUNT];
155        int                   cur_rx;
156        int                   tx_curr;
157        int                   tx_tail;
158        int                   tx_cnt;
159        /*
160         * The configured flag indicates if a Config command was last issued.
161         * The following attempt to issue a command (in ifec_tx_wake) will
162         * use a START rather than RESUME SCB command. It seems the card won't
163         * RESUME after a configure command.
164         */
165        int                   configured;
166        struct spi_bit_basher spi;
167        struct spi_device     eeprom;
168       
169};
170
171/**************************** Function prototypes ****************************/
172
173/* PCI device API prototypes */
174static int  ifec_pci_probe  ( struct pci_device*, const struct pci_device_id*);
175static void ifec_pci_remove ( struct pci_device *pci );
176
177/* Network device API prototypes */
178static void ifec_net_close    ( struct net_device* );
179static void ifec_net_irq      ( struct net_device*, int enable );
180static int  ifec_net_open     ( struct net_device* );
181static void ifec_net_poll     ( struct net_device* );
182static int  ifec_net_transmit ( struct net_device*, struct io_buffer *iobuf );
183
184/* Local function prototypes */
185static void ifec_init_eeprom     ( struct net_device * );
186static int  ifec_link_check      ( struct net_device * );
187static void ifec_link_update     ( struct net_device * );
188static int  ifec_mdio_read       ( struct net_device *, int phy, int location );
189static void ifec_mdio_setup      ( struct net_device *, int options );
190static int  ifec_mdio_write      ( struct net_device *, int phy, int loc, int val);
191static void ifec_reset           ( struct net_device * );
192static void ifec_free            ( struct net_device * );
193static void ifec_rfd_init        ( struct ifec_rfd *rfd, s16 command, u32 link );
194static void  ifec_rx_process     ( struct net_device * );
195static void ifec_reprime_ru      ( struct net_device * );
196static void ifec_check_ru_status ( struct net_device *, unsigned short );
197static int  ifec_get_rx_desc     ( struct net_device *, int ,int ,int );
198static void ifec_refill_rx_ring  ( struct net_device * );
199static int  ifec_rx_setup        ( struct net_device * );
200static int  ifec_scb_cmd         ( struct net_device *, u32 ptr, u8 cmd );
201static int  ifec_scb_cmd_wait    ( struct net_device * );
202static void ifec_tx_process      ( struct net_device * );
203static int  ifec_tx_setup        ( struct net_device * );
204static void ifec_tx_wake         ( struct net_device * );
205
206#endif
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