WAN: Simplify HD64572 drivers.

Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>

1 files changed, 70 insertions, 69 deletions

diff --git a/drivers/net/wan/hd64572.c b/drivers/net/wan/hd64572.c
index 46a99a668e41..c7eff0a66a8e 100644
--- a/drivers/net/wan/hd64572.c
+++ b/drivers/net/wan/hd64572.c
@@ -11,13 +11,13 @@
  *
  * We use the following SCA memory map:
  *
- * Packet buffer descriptor rings - starting from winbase or win0base:
+ * Packet buffer descriptor rings - starting from card->rambase:
  * rx_ring_buffers * sizeof(pkt_desc) = logical channel #0 RX ring
  * tx_ring_buffers * sizeof(pkt_desc) = logical channel #0 TX ring
  * rx_ring_buffers * sizeof(pkt_desc) = logical channel #1 RX ring (if used)
  * tx_ring_buffers * sizeof(pkt_desc) = logical channel #1 TX ring (if used)
  *
- * Packet data buffers - starting from winbase + buff_offset:
+ * Packet data buffers - starting from card->rambase + buff_offset:
  * rx_ring_buffers * HDLC_MAX_MRU     = logical channel #0 RX buffers
  * tx_ring_buffers * HDLC_MAX_MRU     = logical channel #0 TX buffers
  * rx_ring_buffers * HDLC_MAX_MRU     = logical channel #0 RX buffers (if used)
@@ -47,16 +47,18 @@
 
 #define NAPI_WEIGHT             16
 
-#define get_msci(port)    (phy_node(port) ?   MSCI1_OFFSET :   MSCI0_OFFSET)
-#define get_dmac_rx(port) (phy_node(port) ? DMAC1RX_OFFSET : DMAC0RX_OFFSET)
-#define get_dmac_tx(port) (phy_node(port) ? 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)
 
-static int sca_poll(struct napi_struct *napi, int budget);
+#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 inline struct net_device *port_to_dev(port_t *port)
-{
-        return port->dev;
-}
+static int sca_poll(struct napi_struct *napi, int budget);
 
 static inline port_t* dev_to_port(struct net_device *dev)
 {
@@ -67,30 +69,29 @@ static inline void enable_intr(port_t *port)
 {
         /* enable DMIB and MSCI RXINTA interrupts */
         sca_outl(sca_inl(IER0, port->card) |
-                 (phy_node(port) ? 0x08002200 : 0x00080022), IER0, port->card);
+                 (port->chan ? 0x08002200 : 0x00080022), IER0, port->card);
 }
 
 static inline void disable_intr(port_t *port)
 {
         sca_outl(sca_inl(IER0, port->card) &
-                 (phy_node(port) ? 0x00FF00FF : 0xFF00FF00), IER0, port->card);
+                 (port->chan ? 0x00FF00FF : 0xFF00FF00), IER0, port->card);
 }
 
 static inline u16 next_desc(port_t *port, u16 desc, int transmit)
 {
-        return (desc + 1) % (transmit ? port_to_card(port)->tx_ring_buffers
-                             : port_to_card(port)->rx_ring_buffers);
+        return (desc + 1) % (transmit ? port->card->tx_ring_buffers
+                             : port->card->rx_ring_buffers);
 }
 
 
 static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)
 {
-        u16 rx_buffs = port_to_card(port)->rx_ring_buffers;
-        u16 tx_buffs = port_to_card(port)->tx_ring_buffers;
+        u16 rx_buffs = port->card->rx_ring_buffers;
+        u16 tx_buffs = port->card->tx_ring_buffers;
 
         desc %= (transmit ? tx_buffs : rx_buffs); // called with "X + 1" etc.
-        return log_node(port) * (rx_buffs + tx_buffs) +
-                transmit * rx_buffs + desc;
+        return port->chan * (rx_buffs + tx_buffs) + transmit * rx_buffs + desc;
 }
 
 
@@ -104,39 +105,39 @@ static inline u16 desc_offset(port_t *port, u16 desc, int transmit)
 static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc,
                                              int transmit)
 {
-        return (pkt_desc __iomem *)(winbase(port_to_card(port))
-                                    + desc_offset(port, desc, transmit));
+        return (pkt_desc __iomem *)(port->card->rambase +
+                                    desc_offset(port, desc, transmit));
 }
 
 
 static inline u32 buffer_offset(port_t *port, u16 desc, int transmit)
 {
-        return port_to_card(port)->buff_offset +
+        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_to_card(port)) & ST3_DCD)) {
+        if (!(sca_in(get_msci(port) + ST3, port->card) & ST3_DCD)) {
 #ifdef DEBUG_LINK
                 printk(KERN_DEBUG "%s: sca_set_carrier on\n",
-                       port_to_dev(port)->name);
+                       port->netdev.name);
 #endif
-                netif_carrier_on(port_to_dev(port));
+                netif_carrier_on(port->netdev);
         } else {
 #ifdef DEBUG_LINK
                 printk(KERN_DEBUG "%s: sca_set_carrier off\n",
-                       port_to_dev(port)->name);
+                       port->netdev.name);
 #endif
-                netif_carrier_off(port_to_dev(port));
+                netif_carrier_off(port->netdev);
         }
 }
 
 
 static void sca_init_port(port_t *port)
 {
-        card_t *card = port_to_card(port);
+        card_t *card = port->card;
         int transmit, i;
 
         port->rxin = 0;
@@ -160,11 +161,11 @@ static void sca_init_port(port_t *port)
                 }
 
                 /* DMA disable - to halt state */
-                sca_out(0, transmit ? DSR_TX(phy_node(port)) :
-                        DSR_RX(phy_node(port)), card);
+                sca_out(0, transmit ? DSR_TX(port->chan) :
+                        DSR_RX(port->chan), card);
                 /* software ABORT - to initial state */
-                sca_out(DCR_ABORT, transmit ? DCR_TX(phy_node(port)) :
-                        DCR_RX(phy_node(port)), card);
+                sca_out(DCR_ABORT, transmit ? DCR_TX(port->chan) :
+                        DCR_RX(port->chan), card);
 
                 /* current desc addr */
                 sca_outl(desc_offset(port, 0, transmit), dmac + CDAL, card);
@@ -176,26 +177,26 @@ static void sca_init_port(port_t *port)
                                  card);
 
                 /* clear frame end interrupt counter */
-                sca_out(DCR_CLEAR_EOF, transmit ? DCR_TX(phy_node(port)) :
-                        DCR_RX(phy_node(port)), card);
+                sca_out(DCR_CLEAR_EOF, transmit ? DCR_TX(port->chan) :
+                        DCR_RX(port->chan), card);
 
                 if (!transmit) { /* Receive */
                         /* set buffer length */
                         sca_outw(HDLC_MAX_MRU, dmac + BFLL, card);
                         /* Chain mode, Multi-frame */
-                        sca_out(0x14, DMR_RX(phy_node(port)), card);
-                        sca_out(DIR_EOME, DIR_RX(phy_node(port)), card);
+                        sca_out(0x14, DMR_RX(port->chan), card);
+                        sca_out(DIR_EOME, DIR_RX(port->chan), card);
                         /* DMA enable */
-                        sca_out(DSR_DE, DSR_RX(phy_node(port)), card);
+                        sca_out(DSR_DE, DSR_RX(port->chan), card);
                 } else {        /* Transmit */
                         /* Chain mode, Multi-frame */
-                        sca_out(0x14, DMR_TX(phy_node(port)), card);
+                        sca_out(0x14, DMR_TX(port->chan), card);
                         /* enable underflow interrupts */
-                        sca_out(DIR_EOME, DIR_TX(phy_node(port)), card);
+                        sca_out(DIR_EOME, DIR_TX(port->chan), card);
                 }
         }
         sca_set_carrier(port);
-        netif_napi_add(port_to_dev(port), &port->napi, sca_poll, NAPI_WEIGHT);
+        netif_napi_add(port->netdev, &port->napi, sca_poll, NAPI_WEIGHT);
 }
 
 
@@ -203,7 +204,7 @@ static void sca_init_port(port_t *port)
 static inline void sca_msci_intr(port_t *port)
 {
         u16 msci = get_msci(port);
-        card_t* card = port_to_card(port);
+        card_t* card = port->card;
 
         if (sca_in(msci + ST1, card) & ST1_CDCD) {
                 /* Reset MSCI CDCD status bit */
@@ -216,7 +217,7 @@ 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)
 {
-        struct net_device *dev = port_to_dev(port);
+        struct net_device *dev = port->netdev;
         struct sk_buff *skb;
         u16 len;
         u32 buff;
@@ -229,7 +230,7 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc,
         }
 
         buff = buffer_offset(port, rxin, 0);
-        memcpy_fromio(skb->data, winbase(card) + buff, len);
+        memcpy_fromio(skb->data, card->rambase + buff, len);
 
         skb_put(skb, len);
 #ifdef DEBUG_PKT
@@ -246,15 +247,15 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc,
 /* Receive DMA service */
 static inline int sca_rx_done(port_t *port, int budget)
 {
-        struct net_device *dev = port_to_dev(port);
+        struct net_device *dev = port->netdev;
         u16 dmac = get_dmac_rx(port);
-        card_t *card = port_to_card(port);
-        u8 stat = sca_in(DSR_RX(phy_node(port)), card); /* read DMA Status */
+        card_t *card = port->card;
+        u8 stat = sca_in(DSR_RX(port->chan), card); /* read DMA Status */
         int received = 0;
 
         /* Reset DSR status bits */
         sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
-                DSR_RX(phy_node(port)), card);
+                DSR_RX(port->chan), card);
 
         if (stat & DSR_BOF)
                 /* Dropped one or more frames */
@@ -294,7 +295,7 @@ static inline int sca_rx_done(port_t *port, int budget)
         }
 
         /* make sure RX DMA is enabled */
-        sca_out(DSR_DE, DSR_RX(phy_node(port)), card);
+        sca_out(DSR_DE, DSR_RX(port->chan), card);
         return received;
 }
 
@@ -302,17 +303,17 @@ static inline int sca_rx_done(port_t *port, int budget)
 /* Transmit DMA service */
 static inline void sca_tx_done(port_t *port)
 {
-        struct net_device *dev = port_to_dev(port);
-        card_t* card = port_to_card(port);
+        struct net_device *dev = port->netdev;
+        card_t* card = port->card;
         u8 stat;
 
         spin_lock(&port->lock);
 
-        stat = sca_in(DSR_TX(phy_node(port)), card); /* read DMA Status */
+        stat = sca_in(DSR_TX(port->chan), card); /* read DMA Status */
 
         /* Reset DSR status bits */
         sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
-                DSR_TX(phy_node(port)), card);
+                DSR_TX(port->chan), card);
 
         while (1) {
                 pkt_desc __iomem *desc = desc_address(port, port->txlast, 1);
@@ -342,17 +343,17 @@ static int sca_poll(struct napi_struct *napi, int budget)
         u32 isr0 = sca_inl(ISR0, port->card);
         int received = 0;
 
-        if (isr0 & (port->phy_node ? 0x08000000 : 0x00080000))
+        if (isr0 & (port->chan ? 0x08000000 : 0x00080000))
                 sca_msci_intr(port);
 
-        if (isr0 & (port->phy_node ? 0x00002000 : 0x00000020))
+        if (isr0 & (port->chan ? 0x00002000 : 0x00000020))
                 sca_tx_done(port);
 
-        if (isr0 & (port->phy_node ? 0x00000200 : 0x00000002))
+        if (isr0 & (port->chan ? 0x00000200 : 0x00000002))
                 received = sca_rx_done(port, budget);
 
         if (received < budget) {
-                netif_rx_complete(port->dev, napi);
+                netif_rx_complete(port->netdev, napi);
                 enable_intr(port);
         }
 
@@ -370,7 +371,7 @@ static irqreturn_t sca_intr(int irq, void *dev_id)
                 if (port && (isr0 & (i ? 0x08002200 : 0x00080022))) {
                         handled = 1;
                         disable_intr(port);
-                        netif_rx_schedule(port->dev, &port->napi);
+                        netif_rx_schedule(port->netdev, &port->napi);
                 }
         }
 
@@ -380,7 +381,7 @@ static irqreturn_t sca_intr(int irq, void *dev_id)
 
 static void sca_set_port(port_t *port)
 {
-        card_t* card = port_to_card(port);
+        card_t* card = port->card;
         u16 msci = get_msci(port);
         u8 md2 = sca_in(msci + MD2, card);
         unsigned int tmc, br = 10, brv = 1024;
@@ -435,7 +436,7 @@ static void sca_set_port(port_t *port)
 static void sca_open(struct net_device *dev)
 {
         port_t *port = dev_to_port(dev);
-        card_t* card = port_to_card(port);
+        card_t* card = port->card;
         u16 msci = get_msci(port);
         u8 md0, md2;
 
@@ -496,7 +497,7 @@ static void sca_close(struct net_device *dev)
         port_t *port = dev_to_port(dev);
 
         /* reset channel */
-        sca_out(CMD_RESET, get_msci(port) + CMD, port_to_card(port));
+        sca_out(CMD_RESET, get_msci(port) + CMD, port->card);
         disable_intr(port);
         napi_disable(&port->napi);
         netif_stop_queue(dev);
@@ -530,25 +531,25 @@ static int sca_attach(struct net_device *dev, unsigned short encoding,
 static void sca_dump_rings(struct net_device *dev)
 {
         port_t *port = dev_to_port(dev);
-        card_t *card = port_to_card(port);
+        card_t *card = port->card;
         u16 cnt;
 
         printk(KERN_DEBUG "RX ring: CDA=%u EDA=%u DSR=%02X in=%u %sactive",
                sca_inl(get_dmac_rx(port) + CDAL, card),
                sca_inl(get_dmac_rx(port) + EDAL, card),
-               sca_in(DSR_RX(phy_node(port)), card), port->rxin,
-               sca_in(DSR_RX(phy_node(port)), card) & DSR_DE ? "" : "in");
-        for (cnt = 0; cnt < port_to_card(port)->rx_ring_buffers; cnt++)
+               sca_in(DSR_RX(port->chan), card), port->rxin,
+               sca_in(DSR_RX(port->chan), card) & DSR_DE ? "" : "in");
+        for (cnt = 0; cnt < port->card->rx_ring_buffers; cnt++)
                 printk(" %02X", readb(&(desc_address(port, cnt, 0)->stat)));
 
         printk("\n" KERN_DEBUG "TX ring: CDA=%u EDA=%u DSR=%02X in=%u "
                "last=%u %sactive",
                sca_inl(get_dmac_tx(port) + CDAL, card),
                sca_inl(get_dmac_tx(port) + EDAL, card),
-               sca_in(DSR_TX(phy_node(port)), card), port->txin, port->txlast,
-               sca_in(DSR_TX(phy_node(port)), card) & DSR_DE ? "" : "in");
+               sca_in(DSR_TX(port->chan), card), port->txin, port->txlast,
+               sca_in(DSR_TX(port->chan), card) & DSR_DE ? "" : "in");
 
-        for (cnt = 0; cnt < port_to_card(port)->tx_ring_buffers; cnt++)
+        for (cnt = 0; cnt < port->card->tx_ring_buffers; cnt++)
                 printk(" %02X", readb(&(desc_address(port, cnt, 1)->stat)));
         printk("\n");
 
@@ -575,7 +576,7 @@ static void sca_dump_rings(struct net_device *dev)
 static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
 {
         port_t *port = dev_to_port(dev);
-        card_t *card = port_to_card(port);
+        card_t *card = port->card;
         pkt_desc __iomem *desc;
         u32 buff, len;
 
@@ -592,7 +593,7 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
         desc = desc_address(port, port->txin, 1);
         buff = buffer_offset(port, port->txin, 1);
         len = skb->len;
-        memcpy_toio(winbase(card) + buff, skb->data, len);
+        memcpy_toio(card->rambase + buff, skb->data, len);
 
         writew(len, &desc->len);
         writeb(ST_TX_EOM, &desc->stat);
@@ -602,7 +603,7 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
         sca_outl(desc_offset(port, port->txin, 1),
                  get_dmac_tx(port) + EDAL, card);
 
-        sca_out(DSR_DE, DSR_TX(phy_node(port)), card); /* Enable TX DMA */
+        sca_out(DSR_DE, DSR_TX(port->chan), card); /* Enable TX DMA */
 
         desc = desc_address(port, port->txin + 1, 1);
         if (readb(&desc->stat)) /* allow 1 packet gap */