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path: root/drivers/net/wan/hd64572.c
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Diffstat (limited to 'drivers/net/wan/hd64572.c')
-rw-r--r--drivers/net/wan/hd64572.c95
1 files changed, 47 insertions, 48 deletions
diff --git a/drivers/net/wan/hd64572.c b/drivers/net/wan/hd64572.c
index 9f60e3969bf8..b89b03a6aba7 100644
--- a/drivers/net/wan/hd64572.c
+++ b/drivers/net/wan/hd64572.c
@@ -41,20 +41,20 @@
#define NAPI_WEIGHT 16
-#define get_msci(port) (port->chan ? MSCI1_OFFSET : MSCI0_OFFSET)
-#define get_dmac_rx(port) (port->chan ? DMAC1RX_OFFSET : DMAC0RX_OFFSET)
-#define get_dmac_tx(port) (port->chan ? DMAC1TX_OFFSET : DMAC0TX_OFFSET)
+#define get_msci(port) ((port)->chan ? MSCI1_OFFSET : MSCI0_OFFSET)
+#define get_dmac_rx(port) ((port)->chan ? DMAC1RX_OFFSET : DMAC0RX_OFFSET)
+#define get_dmac_tx(port) ((port)->chan ? DMAC1TX_OFFSET : DMAC0TX_OFFSET)
-#define sca_in(reg, card) readb(card->scabase + (reg))
-#define sca_out(value, reg, card) writeb(value, card->scabase + (reg))
-#define sca_inw(reg, card) readw(card->scabase + (reg))
-#define sca_outw(value, reg, card) writew(value, card->scabase + (reg))
-#define sca_inl(reg, card) readl(card->scabase + (reg))
-#define sca_outl(value, reg, card) writel(value, card->scabase + (reg))
+#define sca_in(reg, card) readb((card)->scabase + (reg))
+#define sca_out(value, reg, card) writeb(value, (card)->scabase + (reg))
+#define sca_inw(reg, card) readw((card)->scabase + (reg))
+#define sca_outw(value, reg, card) writew(value, (card)->scabase + (reg))
+#define sca_inl(reg, card) readl((card)->scabase + (reg))
+#define sca_outl(value, reg, card) writel(value, (card)->scabase + (reg))
static int sca_poll(struct napi_struct *napi, int budget);
-static inline port_t* dev_to_port(struct net_device *dev)
+static inline port_t *dev_to_port(struct net_device *dev)
{
return dev_to_hdlc(dev)->priv;
}
@@ -81,14 +81,12 @@ static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)
return port->chan * (rx_buffs + tx_buffs) + transmit * rx_buffs + desc;
}
-
static inline u16 desc_offset(port_t *port, u16 desc, int transmit)
{
/* Descriptor offset always fits in 16 bits */
return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc);
}
-
static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc,
int transmit)
{
@@ -96,14 +94,12 @@ static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc,
desc_offset(port, desc, transmit));
}
-
static inline u32 buffer_offset(port_t *port, u16 desc, int transmit)
{
return port->card->buff_offset +
desc_abs_number(port, desc, transmit) * (u32)HDLC_MAX_MRU;
}
-
static inline void sca_set_carrier(port_t *port)
{
if (!(sca_in(get_msci(port) + ST3, port->card) & ST3_DCD)) {
@@ -121,7 +117,6 @@ static inline void sca_set_carrier(port_t *port)
}
}
-
static void sca_init_port(port_t *port)
{
card_t *card = port->card;
@@ -181,12 +176,11 @@ static void sca_init_port(port_t *port)
netif_napi_add(port->netdev, &port->napi, sca_poll, NAPI_WEIGHT);
}
-
/* MSCI interrupt service */
static inline void sca_msci_intr(port_t *port)
{
u16 msci = get_msci(port);
- card_t* card = port->card;
+ card_t *card = port->card;
if (sca_in(msci + ST1, card) & ST1_CDCD) {
/* Reset MSCI CDCD status bit */
@@ -195,7 +189,6 @@ static inline void sca_msci_intr(port_t *port)
}
}
-
static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc,
u16 rxin)
{
@@ -225,7 +218,6 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc,
netif_receive_skb(skb);
}
-
/* Receive DMA service */
static inline int sca_rx_done(port_t *port, int budget)
{
@@ -281,12 +273,11 @@ static inline int sca_rx_done(port_t *port, int budget)
return received;
}
-
/* Transmit DMA service */
static inline void sca_tx_done(port_t *port)
{
struct net_device *dev = port->netdev;
- card_t* card = port->card;
+ card_t *card = port->card;
u8 stat;
unsigned count = 0;
@@ -321,7 +312,6 @@ static inline void sca_tx_done(port_t *port)
spin_unlock(&port->lock);
}
-
static int sca_poll(struct napi_struct *napi, int budget)
{
port_t *port = container_of(napi, port_t, napi);
@@ -363,15 +353,13 @@ static irqreturn_t sca_intr(int irq, void *dev_id)
return IRQ_RETVAL(handled);
}
-
static void sca_set_port(port_t *port)
{
- card_t* card = port->card;
+ card_t *card = port->card;
u16 msci = get_msci(port);
u8 md2 = sca_in(msci + MD2, card);
unsigned int tmc, br = 10, brv = 1024;
-
if (port->settings.clock_rate > 0) {
/* Try lower br for better accuracy*/
do {
@@ -380,14 +368,15 @@ static void sca_set_port(port_t *port)
/* Baud Rate = CLOCK_BASE / TMC / 2^BR */
tmc = CLOCK_BASE / brv / port->settings.clock_rate;
- }while (br > 1 && tmc <= 128);
+ } while (br > 1 && tmc <= 128);
if (tmc < 1) {
tmc = 1;
br = 0; /* For baud=CLOCK_BASE we use tmc=1 br=0 */
brv = 1;
- } else if (tmc > 255)
+ } else if (tmc > 255) {
tmc = 256; /* tmc=0 means 256 - low baud rates */
+ }
port->settings.clock_rate = CLOCK_BASE / brv / tmc;
} else {
@@ -414,34 +403,50 @@ static void sca_set_port(port_t *port)
md2 &= ~MD2_LOOPBACK;
sca_out(md2, msci + MD2, card);
-
}
-
static void sca_open(struct net_device *dev)
{
port_t *port = dev_to_port(dev);
- card_t* card = port->card;
+ card_t *card = port->card;
u16 msci = get_msci(port);
u8 md0, md2;
- switch(port->encoding) {
- case ENCODING_NRZ: md2 = MD2_NRZ; break;
- case ENCODING_NRZI: md2 = MD2_NRZI; break;
- case ENCODING_FM_MARK: md2 = MD2_FM_MARK; break;
- case ENCODING_FM_SPACE: md2 = MD2_FM_SPACE; break;
- default: md2 = MD2_MANCHESTER;
+ switch (port->encoding) {
+ case ENCODING_NRZ:
+ md2 = MD2_NRZ;
+ break;
+ case ENCODING_NRZI:
+ md2 = MD2_NRZI;
+ break;
+ case ENCODING_FM_MARK:
+ md2 = MD2_FM_MARK;
+ break;
+ case ENCODING_FM_SPACE:
+ md2 = MD2_FM_SPACE;
+ break;
+ default:
+ md2 = MD2_MANCHESTER;
}
if (port->settings.loopback)
md2 |= MD2_LOOPBACK;
- switch(port->parity) {
- case PARITY_CRC16_PR0: md0 = MD0_HDLC | MD0_CRC_16_0; break;
- case PARITY_CRC16_PR1: md0 = MD0_HDLC | MD0_CRC_16; break;
- case PARITY_CRC32_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU32; break;
- case PARITY_CRC16_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU; break;
- default: md0 = MD0_HDLC | MD0_CRC_NONE;
+ switch (port->parity) {
+ case PARITY_CRC16_PR0:
+ md0 = MD0_HDLC | MD0_CRC_16_0;
+ break;
+ case PARITY_CRC16_PR1:
+ md0 = MD0_HDLC | MD0_CRC_16;
+ break;
+ case PARITY_CRC32_PR1_CCITT:
+ md0 = MD0_HDLC | MD0_CRC_ITU32;
+ break;
+ case PARITY_CRC16_PR1_CCITT:
+ md0 = MD0_HDLC | MD0_CRC_ITU;
+ break;
+ default:
+ md0 = MD0_HDLC | MD0_CRC_NONE;
}
sca_out(CMD_RESET, msci + CMD, card);
@@ -476,7 +481,6 @@ static void sca_open(struct net_device *dev)
netif_start_queue(dev);
}
-
static void sca_close(struct net_device *dev)
{
port_t *port = dev_to_port(dev);
@@ -488,7 +492,6 @@ static void sca_close(struct net_device *dev)
netif_stop_queue(dev);
}
-
static int sca_attach(struct net_device *dev, unsigned short encoding,
unsigned short parity)
{
@@ -511,7 +514,6 @@ static int sca_attach(struct net_device *dev, unsigned short encoding,
return 0;
}
-
#ifdef DEBUG_RINGS
static void sca_dump_rings(struct net_device *dev)
{
@@ -558,7 +560,6 @@ static void sca_dump_rings(struct net_device *dev)
}
#endif /* DEBUG_RINGS */
-
static netdev_tx_t sca_xmit(struct sk_buff *skb, struct net_device *dev)
{
port_t *port = dev_to_port(dev);
@@ -600,7 +601,6 @@ static netdev_tx_t sca_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
-
static u32 sca_detect_ram(card_t *card, u8 __iomem *rambase, u32 ramsize)
{
/* Round RAM size to 32 bits, fill from end to start */
@@ -619,7 +619,6 @@ static u32 sca_detect_ram(card_t *card, u8 __iomem *rambase, u32 ramsize)
return i;
}
-
static void sca_init(card_t *card, int wait_states)
{
sca_out(wait_states, WCRL, card); /* Wait Control */
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-13 07:59:32 +0000