diff options
Diffstat (limited to 'drivers/net/dm9000x.c')
| -rw-r--r-- | drivers/net/dm9000x.c | 395 |
1 files changed, 268 insertions, 127 deletions
diff --git a/drivers/net/dm9000x.c b/drivers/net/dm9000x.c index 68901cd..fa95a73 100644 --- a/drivers/net/dm9000x.c +++ b/drivers/net/dm9000x.c @@ -36,7 +36,24 @@ v1.2 03/18/2003 Weilun Huang <weilun_huang@davicom.com.tw>: -------------------------------------- - 12/15/2003 Initial port to u-boot by Sascha Hauer <saschahauer@web.de> + 12/15/2003 Initial port to u-boot by + Sascha Hauer <saschahauer@web.de> + + 06/03/2008 Remy Bohmer <linux@bohmer.net> + - Fixed the driver to work with DM9000A. + (check on ISR receive status bit before reading the + FIFO as described in DM9000 programming guide and + application notes) + - Added autodetect of databus width. + - Made debug code compile again. + - Adapt eth_send such that it matches the DM9000* + application notes. Needed to make it work properly + for DM9000A. + - Adapted reset procedure to match DM9000 application + notes (i.e. double reset) + - some minor code cleanups + These changes are tested with DM9000{A,EP,E} together + with a 200MHz Atmel AT91SAM92161 core TODO: Homerun NIC and longrun NIC are not functional, only internal at the moment. @@ -59,10 +76,22 @@ TODO: Homerun NIC and longrun NIC are not functional, only internal at the /* #define CONFIG_DM9000_DEBUG */ #ifdef CONFIG_DM9000_DEBUG -#define DM9000_DBG(fmt,args...) printf(fmt ,##args) -#else /* */ +#define DM9000_DBG(fmt,args...) printf(fmt, ##args) +#define DM9000_DMP_PACKET(func,packet,length) \ + do { \ + int i; \ + printf(func ": length: %d\n", length); \ + for (i = 0; i < length; i++) { \ + if (i % 8 == 0) \ + printf("\n%s: %02x: ", func, i); \ + printf("%02x ", ((unsigned char *) packet)[i]); \ + } printf("\n"); \ + } while(0) +#else #define DM9000_DBG(fmt,args...) -#endif /* */ +#define DM9000_DMP_PACKET(func,packet,length) +#endif + enum DM9000_PHY_mode { DM9000_10MHD = 0, DM9000_100MHD = 1, DM9000_10MFD = 4, DM9000_100MFD = 5, DM9000_AUTO = 8, DM9000_1M_HPNA = 0x10 @@ -84,8 +113,11 @@ typedef struct board_info { u8 device_wait_reset; /* device state */ u8 nic_type; /* NIC type */ unsigned char srom[128]; + void (*outblk)(volatile void *data_ptr, int count); + void (*inblk)(void *data_ptr, int count); + void (*rx_status)(u16 *RxStatus, u16 *RxLen); } board_info_t; -board_info_t dmfe_info; +static board_info_t dm9000_info; /* For module input parameter */ static int media_mode = DM9000_AUTO; @@ -124,10 +156,85 @@ dump_regs(void) DM9000_DBG("TSRII (0x04): %02x\n", DM9000_ior(4)); DM9000_DBG("RCR (0x05): %02x\n", DM9000_ior(5)); DM9000_DBG("RSR (0x06): %02x\n", DM9000_ior(6)); - DM9000_DBG("ISR (0xFE): %02x\n", DM9000_ior(ISR)); + DM9000_DBG("ISR (0xFE): %02x\n", DM9000_ior(DM9000_ISR)); DM9000_DBG("\n"); } -#endif /* */ +#endif + +static void dm9000_outblk_8bit(volatile void *data_ptr, int count) +{ + int i; + for (i = 0; i < count; i++) + DM9000_outb((((u8 *) data_ptr)[i] & 0xff), DM9000_DATA); +} + +static void dm9000_outblk_16bit(volatile void *data_ptr, int count) +{ + int i; + u32 tmplen = (count + 1) / 2; + + for (i = 0; i < tmplen; i++) + DM9000_outw(((u16 *) data_ptr)[i], DM9000_DATA); +} +static void dm9000_outblk_32bit(volatile void *data_ptr, int count) +{ + int i; + u32 tmplen = (count + 3) / 4; + + for (i = 0; i < tmplen; i++) + DM9000_outl(((u32 *) data_ptr)[i], DM9000_DATA); +} + +static void dm9000_inblk_8bit(void *data_ptr, int count) +{ + int i; + for (i = 0; i < count; i++) + ((u8 *) data_ptr)[i] = DM9000_inb(DM9000_DATA); +} + +static void dm9000_inblk_16bit(void *data_ptr, int count) +{ + int i; + u32 tmplen = (count + 1) / 2; + + for (i = 0; i < tmplen; i++) + ((u16 *) data_ptr)[i] = DM9000_inw(DM9000_DATA); +} +static void dm9000_inblk_32bit(void *data_ptr, int count) +{ + int i; + u32 tmplen = (count + 3) / 4; + + for (i = 0; i < tmplen; i++) + ((u32 *) data_ptr)[i] = DM9000_inl(DM9000_DATA); +} + +static void dm9000_rx_status_32bit(u16 *RxStatus, u16 *RxLen) +{ + u32 tmpdata; + + DM9000_outb(DM9000_MRCMD, DM9000_IO); + + tmpdata = DM9000_inl(DM9000_DATA); + *RxStatus = tmpdata; + *RxLen = tmpdata >> 16; +} + +static void dm9000_rx_status_16bit(u16 *RxStatus, u16 *RxLen) +{ + DM9000_outb(DM9000_MRCMD, DM9000_IO); + + *RxStatus = DM9000_inw(DM9000_DATA); + *RxLen = DM9000_inw(DM9000_DATA); +} + +static void dm9000_rx_status_8bit(u16 *RxStatus, u16 *RxLen) +{ + DM9000_outb(DM9000_MRCMD, DM9000_IO); + + *RxStatus = DM9000_inb(DM9000_DATA) + (DM9000_inb(DM9000_DATA) << 8); + *RxLen = DM9000_inb(DM9000_DATA) + (DM9000_inb(DM9000_DATA) << 8); +} /* Search DM9000 board, allocate space and register it @@ -236,7 +343,7 @@ program_dm9802(void) static void identify_nic(void) { - struct board_info *db = &dmfe_info; /* Point a board information structure */ + struct board_info *db = &dm9000_info; u16 phy_reg3; DM9000_iow(DM9000_NCR, NCR_EXT_PHY); phy_reg3 = phy_read(3); @@ -263,9 +370,35 @@ identify_nic(void) static void dm9000_reset(void) { - DM9000_DBG("resetting\n"); - DM9000_iow(DM9000_NCR, NCR_RST); - udelay(1000); /* delay 1ms */ + DM9000_DBG("resetting DM9000\n"); + + /* Reset DM9000, + see DM9000 Application Notes V1.22 Jun 11, 2004 page 29 */ + + /* DEBUG: Make all GPIO pins outputs */ + DM9000_iow(DM9000_GPCR, 0x0F); + /* Step 1: Power internal PHY by writing 0 to GPIO0 pin */ + DM9000_iow(DM9000_GPR, 0); + /* Step 2: Software reset */ + DM9000_iow(DM9000_NCR, 3); + + do { + DM9000_DBG("resetting the DM9000, 1st reset\n"); + udelay(25); /* Wait at least 20 us */ + } while (DM9000_ior(DM9000_NCR) & 1); + + DM9000_iow(DM9000_NCR, 0); + DM9000_iow(DM9000_NCR, 3); /* Issue a second reset */ + + do { + DM9000_DBG("resetting the DM9000, 2nd reset\n"); + udelay(25); /* Wait at least 20 us */ + } while (DM9000_ior(DM9000_NCR) & 1); + + /* Check whether the ethernet controller is present */ + if ((DM9000_ior(DM9000_PIDL) != 0x0) || + (DM9000_ior(DM9000_PIDH) != 0x90)) + printf("ERROR: resetting DM9000 -> not responding\n"); } /* Initilize dm9000 board @@ -274,12 +407,46 @@ int eth_init(bd_t * bd) { int i, oft, lnk; + u8 io_mode; + struct board_info *db = &dm9000_info; + DM9000_DBG("eth_init()\n"); /* RESET device */ dm9000_reset(); dm9000_probe(); + /* Auto-detect 8/16/32 bit mode, ISR Bit 6+7 indicate bus width */ + io_mode = DM9000_ior(DM9000_ISR) >> 6; + + switch (io_mode) { + case 0x0: /* 16-bit mode */ + printf("DM9000: running in 16 bit mode\n"); + db->outblk = dm9000_outblk_16bit; + db->inblk = dm9000_inblk_16bit; + db->rx_status = dm9000_rx_status_16bit; + break; + case 0x01: /* 32-bit mode */ + printf("DM9000: running in 32 bit mode\n"); + db->outblk = dm9000_outblk_32bit; + db->inblk = dm9000_inblk_32bit; + db->rx_status = dm9000_rx_status_32bit; + break; + case 0x02: /* 8 bit mode */ + printf("DM9000: running in 8 bit mode\n"); + db->outblk = dm9000_outblk_8bit; + db->inblk = dm9000_inblk_8bit; + db->rx_status = dm9000_rx_status_8bit; + break; + default: + /* Assume 8 bit mode, will probably not work anyway */ + printf("DM9000: Undefined IO-mode:0x%x\n", io_mode); + db->outblk = dm9000_outblk_8bit; + db->inblk = dm9000_inblk_8bit; + db->rx_status = dm9000_rx_status_8bit; + break; + } + /* NIC Type: FASTETHER, HOMERUN, LONGRUN */ identify_nic(); @@ -289,15 +456,22 @@ eth_init(bd_t * bd) /* Set PHY */ set_PHY_mode(); - /* Program operating register */ - DM9000_iow(DM9000_NCR, 0x0); /* only intern phy supported by now */ - DM9000_iow(DM9000_TCR, 0); /* TX Polling clear */ - DM9000_iow(DM9000_BPTR, 0x3f); /* Less 3Kb, 200us */ - DM9000_iow(DM9000_FCTR, FCTR_HWOT(3) | FCTR_LWOT(8)); /* Flow Control : High/Low Water */ - DM9000_iow(DM9000_FCR, 0x0); /* SH FIXME: This looks strange! Flow Control */ - DM9000_iow(DM9000_SMCR, 0); /* Special Mode */ - DM9000_iow(DM9000_NSR, NSR_WAKEST | NSR_TX2END | NSR_TX1END); /* clear TX status */ - DM9000_iow(DM9000_ISR, 0x0f); /* Clear interrupt status */ + /* Program operating register, only intern phy supported by now */ + DM9000_iow(DM9000_NCR, 0x0); + /* TX Polling clear */ + DM9000_iow(DM9000_TCR, 0); + /* Less 3Kb, 200us */ + DM9000_iow(DM9000_BPTR, 0x3f); + /* Flow Control : High/Low Water */ + DM9000_iow(DM9000_FCTR, FCTR_HWOT(3) | FCTR_LWOT(8)); + /* SH FIXME: This looks strange! Flow Control */ + DM9000_iow(DM9000_FCR, 0x0); + /* Special Mode */ + DM9000_iow(DM9000_SMCR, 0); + /* clear TX status */ + DM9000_iow(DM9000_NSR, NSR_WAKEST | NSR_TX2END | NSR_TX1END); + /* Clear interrupt status */ + DM9000_iow(DM9000_ISR, 0x0f); /* Set Node address */ #ifndef CONFIG_AT91SAM9261EK @@ -333,8 +507,11 @@ eth_init(bd_t * bd) DM9000_DBG("\n"); /* Activate DM9000 */ - DM9000_iow(DM9000_RCR, RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN); /* RX enable */ - DM9000_iow(DM9000_IMR, IMR_PAR); /* Enable TX/RX interrupt mask */ + /* RX enable */ + DM9000_iow(DM9000_RCR, RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN); + /* Enable TX/RX interrupt mask */ + DM9000_iow(DM9000_IMR, IMR_PAR); + i = 0; while (!(phy_read(1) & 0x20)) { /* autonegation complete bit */ udelay(1000); @@ -376,54 +553,37 @@ eth_init(bd_t * bd) int eth_send(volatile void *packet, int length) { - char *data_ptr; - u32 tmplen, i; int tmo; - DM9000_DBG("eth_send: length: %d\n", length); - for (i = 0; i < length; i++) { - if (i % 8 == 0) - DM9000_DBG("\nSend: 02x: ", i); - DM9000_DBG("%02x ", ((unsigned char *) packet)[i]); - } DM9000_DBG("\n"); + struct board_info *db = &dm9000_info; - /* Move data to DM9000 TX RAM */ - data_ptr = (char *) packet; - DM9000_outb(DM9000_MWCMD, DM9000_IO); + DM9000_DMP_PACKET("eth_send", packet, length); -#ifdef CONFIG_DM9000_USE_8BIT - /* Byte mode */ - for (i = 0; i < length; i++) - DM9000_outb((data_ptr[i] & 0xff), DM9000_DATA); + DM9000_iow(DM9000_ISR, IMR_PTM); /* Clear Tx bit in ISR */ -#endif /* */ -#ifdef CONFIG_DM9000_USE_16BIT - tmplen = (length + 1) / 2; - for (i = 0; i < tmplen; i++) - DM9000_outw(((u16 *) data_ptr)[i], DM9000_DATA); - -#endif /* */ -#ifdef CONFIG_DM9000_USE_32BIT - tmplen = (length + 3) / 4; - for (i = 0; i < tmplen; i++) - DM9000_outl(((u32 *) data_ptr)[i], DM9000_DATA); + /* Move data to DM9000 TX RAM */ + DM9000_outb(DM9000_MWCMD, DM9000_IO); /* Prepare for TX-data */ -#endif /* */ + /* push the data to the TX-fifo */ + (db->outblk)(packet, length); /* Set TX length to DM9000 */ DM9000_iow(DM9000_TXPLL, length & 0xff); DM9000_iow(DM9000_TXPLH, (length >> 8) & 0xff); /* Issue TX polling command */ - DM9000_iow(DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */ + DM9000_iow(DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */ /* wait for end of transmission */ tmo = get_timer(0) + 5 * CFG_HZ; - while (DM9000_ior(DM9000_TCR) & TCR_TXREQ) { + while ( !(DM9000_ior(DM9000_NSR) & (NSR_TX1END | NSR_TX2END)) || + !(DM9000_ior(DM9000_ISR) & IMR_PTM) ) { if (get_timer(0) >= tmo) { printf("transmission timeout\n"); break; } } + DM9000_iow(DM9000_ISR, IMR_PTM); /* Clear Tx bit in ISR */ + DM9000_DBG("transmit done\n\n"); return 0; } @@ -452,86 +612,67 @@ eth_rx(void) { u8 rxbyte, *rdptr = (u8 *) NetRxPackets[0]; u16 RxStatus, RxLen = 0; - u32 tmplen, i; -#ifdef CONFIG_DM9000_USE_32BIT - u32 tmpdata; -#endif + struct board_info *db = &dm9000_info; - /* Check packet ready or not */ - DM9000_ior(DM9000_MRCMDX); /* Dummy read */ - rxbyte = DM9000_inb(DM9000_DATA); /* Got most updated data */ - if (rxbyte == 0) + /* Check packet ready or not, we must check + the ISR status first for DM9000A */ + if (!(DM9000_ior(DM9000_ISR) & 0x01)) /* Rx-ISR bit must be set. */ return 0; - /* Status check: this byte must be 0 or 1 */ - if (rxbyte > 1) { - DM9000_iow(DM9000_RCR, 0x00); /* Stop Device */ - DM9000_iow(DM9000_ISR, 0x80); /* Stop INT request */ - DM9000_DBG("rx status check: %d\n", rxbyte); - } - DM9000_DBG("receiving packet\n"); - - /* A packet ready now & Get status/length */ - DM9000_outb(DM9000_MRCMD, DM9000_IO); - -#ifdef CONFIG_DM9000_USE_8BIT - RxStatus = DM9000_inb(DM9000_DATA) + (DM9000_inb(DM9000_DATA) << 8); - RxLen = DM9000_inb(DM9000_DATA) + (DM9000_inb(DM9000_DATA) << 8); - -#endif /* */ -#ifdef CONFIG_DM9000_USE_16BIT - RxStatus = DM9000_inw(DM9000_DATA); - RxLen = DM9000_inw(DM9000_DATA); - -#endif /* */ -#ifdef CONFIG_DM9000_USE_32BIT - tmpdata = DM9000_inl(DM9000_DATA); - RxStatus = tmpdata; - RxLen = tmpdata >> 16; + DM9000_iow(DM9000_ISR, 0x01); /* clear PR status latched in bit 0 */ -#endif /* */ - DM9000_DBG("rx status: 0x%04x rx len: %d\n", RxStatus, RxLen); + /* There is _at least_ 1 package in the fifo, read them all */ + for (;;) { + DM9000_ior(DM9000_MRCMDX); /* Dummy read */ - /* Move data from DM9000 */ - /* Read received packet from RX SRAM */ -#ifdef CONFIG_DM9000_USE_8BIT - for (i = 0; i < RxLen; i++) - rdptr[i] = DM9000_inb(DM9000_DATA); + /* Get most updated data, + only look at bits 0:1, See application notes DM9000 */ + rxbyte = DM9000_inb(DM9000_DATA) & 0x03; -#endif /* */ -#ifdef CONFIG_DM9000_USE_16BIT - tmplen = (RxLen + 1) / 2; - for (i = 0; i < tmplen; i++) - ((u16 *) rdptr)[i] = DM9000_inw(DM9000_DATA); + /* Status check: this byte must be 0 or 1 */ + if (rxbyte > DM9000_PKT_RDY) { + DM9000_iow(DM9000_RCR, 0x00); /* Stop Device */ + DM9000_iow(DM9000_ISR, 0x80); /* Stop INT request */ + printf("DM9000 error: status check fail: 0x%x\n", + rxbyte); + return 0; + } -#endif /* */ -#ifdef CONFIG_DM9000_USE_32BIT - tmplen = (RxLen + 3) / 4; - for (i = 0; i < tmplen; i++) - ((u32 *) rdptr)[i] = DM9000_inl(DM9000_DATA); + if (rxbyte != DM9000_PKT_RDY) + return 0; /* No packet received, ignore */ + + DM9000_DBG("receiving packet\n"); + + /* A packet ready now & Get status/length */ + (db->rx_status)(&RxStatus, &RxLen); + + DM9000_DBG("rx status: 0x%04x rx len: %d\n", RxStatus, RxLen); + + /* Move data from DM9000 */ + /* Read received packet from RX SRAM */ + (db->inblk)(rdptr, RxLen); + + if ((RxStatus & 0xbf00) || (RxLen < 0x40) + || (RxLen > DM9000_PKT_MAX)) { + if (RxStatus & 0x100) { + printf("rx fifo error\n"); + } + if (RxStatus & 0x200) { + printf("rx crc error\n"); + } + if (RxStatus & 0x8000) { + printf("rx length error\n"); + } + if (RxLen > DM9000_PKT_MAX) { + printf("rx length too big\n"); + dm9000_reset(); + } + } else { + DM9000_DMP_PACKET("eth_rx", rdptr, RxLen); -#endif /* */ - if ((RxStatus & 0xbf00) || (RxLen < 0x40) - || (RxLen > DM9000_PKT_MAX)) { - if (RxStatus & 0x100) { - printf("rx fifo error\n"); + DM9000_DBG("passing packet to upper layer\n"); + NetReceive(NetRxPackets[0], RxLen); } - if (RxStatus & 0x200) { - printf("rx crc error\n"); - } - if (RxStatus & 0x8000) { - printf("rx length error\n"); - } - if (RxLen > DM9000_PKT_MAX) { - printf("rx length too big\n"); - dm9000_reset(); - } - } else { - - /* Pass to upper layer */ - DM9000_DBG("passing packet to upper layer\n"); - NetReceive(NetRxPackets[0], RxLen); - return RxLen; } return 0; } @@ -592,12 +733,12 @@ phy_read(int reg) /* Fill the phyxcer register into REG_0C */ DM9000_iow(DM9000_EPAR, DM9000_PHY | reg); DM9000_iow(DM9000_EPCR, 0xc); /* Issue phyxcer read command */ - udelay(100); /* Wait read complete */ + udelay(100); /* Wait read complete */ DM9000_iow(DM9000_EPCR, 0x0); /* Clear phyxcer read command */ val = (DM9000_ior(DM9000_EPDRH) << 8) | DM9000_ior(DM9000_EPDRL); /* The read data keeps on REG_0D & REG_0E */ - DM9000_DBG("phy_read(%d): %d\n", reg, val); + DM9000_DBG("phy_read(0x%x): 0x%x\n", reg, val); return val; } @@ -615,8 +756,8 @@ phy_write(int reg, u16 value) DM9000_iow(DM9000_EPDRL, (value & 0xff)); DM9000_iow(DM9000_EPDRH, ((value >> 8) & 0xff)); DM9000_iow(DM9000_EPCR, 0xa); /* Issue phyxcer write command */ - udelay(500); /* Wait write complete */ + udelay(500); /* Wait write complete */ DM9000_iow(DM9000_EPCR, 0x0); /* Clear phyxcer write command */ - DM9000_DBG("phy_write(reg:%d, value:%d)\n", reg, value); + DM9000_DBG("phy_write(reg:0x%x, value:0x%x)\n", reg, value); } -#endif /* CONFIG_DRIVER_DM9000 */ +#endif /* CONFIG_DRIVER_DM9000 */ |