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Diffstat (limited to 'drivers/net/dm9000x.c')
-rw-r--r--drivers/net/dm9000x.c187
1 files changed, 129 insertions, 58 deletions
diff --git a/drivers/net/dm9000x.c b/drivers/net/dm9000x.c
index 01e2f14..0a2ce68 100644
--- a/drivers/net/dm9000x.c
+++ b/drivers/net/dm9000x.c
@@ -36,7 +36,13 @@ 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>
+ - Added autodetect of databus width.
+ 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.
@@ -84,8 +90,11 @@ typedef struct board_info {
u8 device_wait_reset; /* device state */
u8 nic_type; /* NIC type */
unsigned char srom[128];
-} board_info_t;
-board_info_t dmfe_info;
+ void (*outblk)(void *data_ptr, int count);
+ void (*inblk)(void *data_ptr, int count);
+ void (*rx_status)(u16 *RxStatus, u16 *RxLen);
+ } board_info_t;
+static board_info_t dm9000_info;
/* For module input parameter */
static int media_mode = DM9000_AUTO;
@@ -127,7 +136,81 @@ dump_regs(void)
DM9000_DBG("ISR (0xFE): %02x\n", DM9000_ior(ISR));
DM9000_DBG("\n");
}
-#endif /* */
+#endif
+
+static void dm9000_outblk_8bit(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(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(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_inl(DM9000_DATA);
+
+ DM9000_outb(DM9000_MRCMD, DM9000_IO);
+
+ *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 +319,7 @@ 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);
@@ -274,12 +357,46 @@ 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();
@@ -377,6 +494,8 @@ eth_send(volatile void *packet, int length)
char *data_ptr;
u32 tmplen, i;
int tmo;
+ struct board_info *db = &dm9000_info;
+
DM9000_DBG("eth_send: length: %d\n", length);
for (i = 0; i < length; i++) {
if (i % 8 == 0)
@@ -388,24 +507,8 @@ eth_send(volatile void *packet, int length)
data_ptr = (char *) packet;
DM9000_outb(DM9000_MWCMD, DM9000_IO);
-#ifdef CONFIG_DM9000_USE_8BIT
- /* Byte mode */
- for (i = 0; i < length; i++)
- DM9000_outb((data_ptr[i] & 0xff), DM9000_DATA);
-
-#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);
-
-#endif /* */
+ /* push the data to the TX-fifo */
+ (db->outblk)(data_ptr, length);
/* Set TX length to DM9000 */
DM9000_iow(DM9000_TXPLL, length & 0xff);
@@ -450,10 +553,7 @@ 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 */
@@ -472,43 +572,14 @@ eth_rx(void)
/* 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);
+ (db->rx_status)(&RxStatus, &RxLen);
-#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;
-
-#endif /* */
DM9000_DBG("rx status: 0x%04x rx len: %d\n", RxStatus, RxLen);
/* 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);
-
-#endif /* */
-#ifdef CONFIG_DM9000_USE_16BIT
- tmplen = (RxLen + 1) / 2;
- for (i = 0; i < tmplen; i++)
- ((u16 *) rdptr)[i] = DM9000_inw(DM9000_DATA);
+ (db->inblk)(rdptr, RxLen);
-#endif /* */
-#ifdef CONFIG_DM9000_USE_32BIT
- tmplen = (RxLen + 3) / 4;
- for (i = 0; i < tmplen; i++)
- ((u32 *) rdptr)[i] = DM9000_inl(DM9000_DATA);
-
-#endif /* */
if ((RxStatus & 0xbf00) || (RxLen < 0x40)
|| (RxLen > DM9000_PKT_MAX)) {
if (RxStatus & 0x100) {
generated by cgit v1.1 at 2024-11-24 02:56:37 +0000