#undef DEBUG
- /* Ethernet chip registers.
- */
+/* Ethernet chip registers. */
#define SCBStatus 0 /* Rx/Command Unit Status *Word* */
#define SCBIntAckByte 1 /* Rx/Command Unit STAT/ACK byte */
#define SCBCmd 2 /* Rx/Command Unit Command *Word* */
#define SCBGenControl 28 /* 82559 General Control Register */
#define SCBGenStatus 29 /* 82559 General Status register */
- /* 82559 SCB status word defnitions
- */
+/* 82559 SCB status word defnitions */
#define SCB_STATUS_CX 0x8000 /* CU finished command (transmit) */
#define SCB_STATUS_FR 0x4000 /* frame received */
#define SCB_STATUS_CNA 0x2000 /* CU left active state */
#define SCB_INTACK_TX (SCB_STATUS_CX | SCB_STATUS_CNA)
#define SCB_INTACK_RX (SCB_STATUS_FR | SCB_STATUS_RNR)
- /* System control block commands
- */
+/* System control block commands */
/* CU Commands */
#define CU_NOP 0x0000
#define CU_START 0x0010
#define RU_STATUS_NO_RBDS_NORES ((2<<2)|(8<<2))
#define RU_STATUS_NO_RBDS_READY ((4<<2)|(8<<2))
- /* 82559 Port interface commands.
- */
+/* 82559 Port interface commands. */
#define I82559_RESET 0x00000000 /* Software reset */
#define I82559_SELFTEST 0x00000001 /* 82559 Selftest command */
#define I82559_SELECTIVE_RESET 0x00000002
#define I82559_DUMP 0x00000003
#define I82559_DUMP_WAKEUP 0x00000007
- /* 82559 Eeprom interface.
- */
+/* 82559 Eeprom interface. */
#define EE_SHIFT_CLK 0x01 /* EEPROM shift clock. */
#define EE_CS 0x02 /* EEPROM chip select. */
#define EE_DATA_WRITE 0x04 /* EEPROM chip data in. */
#define EE_CMD_BITS 3
#define EE_DATA_BITS 16
- /* The EEPROM commands include the alway-set leading bit.
- */
+/* The EEPROM commands include the alway-set leading bit. */
#define EE_EWENB_CMD (4 << addr_len)
#define EE_WRITE_CMD (5 << addr_len)
#define EE_READ_CMD (6 << addr_len)
#define EE_ERASE_CMD (7 << addr_len)
- /* Receive frame descriptors.
- */
+/* Receive frame descriptors. */
struct RxFD {
volatile u16 status;
volatile u16 control;
#define RFD_RX_IA_MATCH 0x0002 /* individual address does not match */
#define RFD_RX_TCO 0x0001 /* TCO indication */
- /* Transmit frame descriptors
- */
+/* Transmit frame descriptors */
struct TxFD { /* Transmit frame descriptor set. */
volatile u16 status;
volatile u16 command;
volatile u32 tx_desc_addr; /* Always points to the tx_buf_addr element. */
volatile s32 count;
- volatile u32 tx_buf_addr0; /* void *, frame to be transmitted. */
+ volatile u32 tx_buf_addr0; /* void *, frame to be transmitted. */
volatile s32 tx_buf_size0; /* Length of Tx frame. */
- volatile u32 tx_buf_addr1; /* void *, frame to be transmitted. */
+ volatile u32 tx_buf_addr1; /* void *, frame to be transmitted. */
volatile s32 tx_buf_size1; /* Length of Tx frame. */
};
#define TxCB_COUNT_MASK 0x3fff
#define TxCB_COUNT_EOF 0x8000
- /* The Speedo3 Rx and Tx frame/buffer descriptors.
- */
+/* The Speedo3 Rx and Tx frame/buffer descriptors. */
struct descriptor { /* A generic descriptor. */
volatile u16 status;
volatile u16 command;
- volatile u32 link; /* struct descriptor * */
+ volatile u32 link; /* struct descriptor * */
unsigned char params[0];
};
#define CONFIG_SYS_STATUS_C 0x8000
#define CONFIG_SYS_STATUS_OK 0x2000
- /* Misc.
- */
+/* Misc. */
#define NUM_RX_DESC PKTBUFSRX
-#define NUM_TX_DESC 1 /* Number of TX descriptors */
+#define NUM_TX_DESC 1 /* Number of TX descriptors */
#define TOUT_LOOP 1000000
-static struct RxFD rx_ring[NUM_RX_DESC]; /* RX descriptor ring */
-static struct TxFD tx_ring[NUM_TX_DESC]; /* TX descriptor ring */
+static struct RxFD rx_ring[NUM_RX_DESC]; /* RX descriptor ring */
+static struct TxFD tx_ring[NUM_TX_DESC]; /* TX descriptor ring */
static int rx_next; /* RX descriptor ring pointer */
static int tx_next; /* TX descriptor ring pointer */
static int tx_threshold;
return 0;
}
-/* Check if given phyaddr is valid, i.e. there is a PHY connected.
+/*
+ * Check if given phyaddr is valid, i.e. there is a PHY connected.
* Do this by checking model value field from ID2 register.
*/
static struct eth_device* verify_phyaddr (const char *devname,
#endif
-/* Wait for the chip get the command.
-*/
+/* Wait for the chip get the command. */
static int wait_for_eepro100 (struct eth_device *dev)
{
int i;
int idx = 0;
while (1) {
- /* Find PCI device
- */
+ /* Find PCI device */
if ((devno = pci_find_devices (supported, idx++)) < 0) {
break;
}
PCI_COMMAND,
PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
- /* Check if I/O accesses and Bus Mastering are enabled.
- */
+ /* Check if I/O accesses and Bus Mastering are enabled. */
pci_read_config_dword (devno, PCI_COMMAND, &status);
if (!(status & PCI_COMMAND_MEMORY)) {
printf ("Error: Can not enable MEM access.\n");
card_number++;
- /* Set the latency timer for value.
- */
+ /* Set the latency timer for value. */
pci_write_config_byte (devno, PCI_LATENCY_TIMER, 0x20);
udelay(10 * 1000);
int tx_cur;
struct descriptor *ias_cmd, *cfg_cmd;
- /* Reset the ethernet controller
- */
+ /* Reset the ethernet controller */
OUTL (dev, I82559_SELECTIVE_RESET, SCBPort);
udelay(20);
OUTL (dev, 0, SCBPointer);
OUTW (dev, SCB_M | CU_ADDR_LOAD, SCBCmd);
- /* Initialize Rx and Tx rings.
- */
+ /* Initialize Rx and Tx rings. */
init_rx_ring (dev);
purge_tx_ring (dev);
- /* Tell the adapter where the RX ring is located.
- */
+ /* Tell the adapter where the RX ring is located. */
if (!wait_for_eepro100 (dev)) {
printf ("Error: Can not reset ethernet controller.\n");
goto Done;
goto Done;
}
- /* Send the Individual Address Setup frame
- */
+ /* Send the Individual Address Setup frame */
tx_cur = tx_next;
tx_next = ((tx_next + 1) % NUM_TX_DESC);
memcpy (ias_cmd->params, dev->enetaddr, 6);
- /* Tell the adapter where the TX ring is located.
- */
+ /* Tell the adapter where the TX ring is located. */
if (!wait_for_eepro100 (dev)) {
printf ("Error: Can not reset ethernet controller.\n");
goto Done;
goto Done;
}
- /* Send the packet.
- */
+ /* Send the packet. */
OUTL (dev, phys_to_bus ((u32) & tx_ring[tx_cur]), SCBPointer);
OUTW (dev, SCB_M | CU_START, SCBCmd);
break;
}
- /* Valid frame status.
- */
+ /* Valid frame status. */
if ((status & RFD_STATUS_OK)) {
- /* A valid frame received.
- */
+ /* A valid frame received. */
length = le32_to_cpu (rx_ring[rx_next].count) & 0x3fff;
- /* Pass the packet up to the protocol
- * layers.
- */
+ /* Pass the packet up to the protocol layers. */
net_process_received_packet((u8 *)rx_ring[rx_next].data,
length);
} else {
- /* There was an error.
- */
+ /* There was an error. */
printf ("RX error status = 0x%08X\n", status);
}
rx_prev = (rx_next + NUM_RX_DESC - 1) % NUM_RX_DESC;
rx_ring[rx_prev].control = 0;
- /* Update entry information.
- */
+ /* Update entry information. */
rx_next = (rx_next + 1) % NUM_RX_DESC;
}
printf ("%s: Receiver is not ready, restart it !\n", dev->name);
- /* Reinitialize Rx ring.
- */
+ /* Reinitialize Rx ring. */
init_rx_ring (dev);
if (!wait_for_eepro100 (dev)) {
static void eepro100_halt (struct eth_device *dev)
{
- /* Reset the ethernet controller
- */
+ /* Reset the ethernet controller */
OUTL (dev, I82559_SELECTIVE_RESET, SCBPort);
udelay(20);
return;
}
- /* SROM Read.
- */
+/* SROM Read. */
static int read_eeprom (struct eth_device *dev, int location, int addr_len)
{
unsigned short retval = 0;
projects / platform / kernel / u-boot.git / commitdiff