lkml.org 
[lkml]   [2010]   [Nov]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH net-next-2.6 2/17] can: EG20T PCH: Change Message Object Index
Change Message Object index macro name.
For easy to readable, add Message Object index like below.
PCH_RX_OBJ_START
PCH_RX_OBJ_END
PCH_TX_OBJ_START
PCH_TX_OBJ_END

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
---
drivers/net/can/pch_can.c | 288 ++++++++++++++++++++-------------------------
1 files changed, 128 insertions(+), 160 deletions(-)

diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c
index 143f100..b028ae4 100644
--- a/drivers/net/can/pch_can.c
+++ b/drivers/net/can/pch_can.c
@@ -32,12 +32,6 @@
#include <linux/can/dev.h>
#include <linux/can/error.h>

-#define PCH_MAX_MSG_OBJ 32
-#define PCH_MSG_OBJ_RX 0 /* The receive message object flag. */
-#define PCH_MSG_OBJ_TX 1 /* The transmit message object flag. */
-
-#define PCH_ENABLE 1 /* The enable flag */
-#define PCH_DISABLE 0 /* The disable flag */
#define PCH_CTRL_INIT BIT(0) /* The INIT bit of CANCONT register. */
#define PCH_CTRL_IE BIT(1) /* The IE bit of CAN control register */
#define PCH_CTRL_IE_SIE_EIE (BIT(3) | BIT(2) | BIT(1))
@@ -110,9 +104,12 @@
/* Define the number of message object.
* PCH CAN communications are done via Message RAM.
* The Message RAM consists of 32 message objects. */
-#define PCH_RX_OBJ_NUM 26 /* 1~ PCH_RX_OBJ_NUM is Rx*/
-#define PCH_TX_OBJ_NUM 6 /* PCH_RX_OBJ_NUM is RX ~ Tx*/
-#define PCH_OBJ_NUM (PCH_TX_OBJ_NUM + PCH_RX_OBJ_NUM)
+#define PCH_RX_OBJ_NUM 26
+#define PCH_TX_OBJ_NUM 6
+#define PCH_RX_OBJ_START 1
+#define PCH_RX_OBJ_END PCH_RX_OBJ_NUM
+#define PCH_TX_OBJ_START (PCH_RX_OBJ_END + 1)
+#define PCH_TX_OBJ_END (PCH_RX_OBJ_NUM + PCH_TX_OBJ_NUM)

#define PCH_FIFO_THRESH 16

@@ -170,14 +167,14 @@ struct pch_can_priv {
struct can_priv can;
unsigned int can_num;
struct pci_dev *dev;
- unsigned int tx_enable[PCH_MAX_MSG_OBJ];
- unsigned int rx_enable[PCH_MAX_MSG_OBJ];
- unsigned int rx_link[PCH_MAX_MSG_OBJ];
+ int tx_enable[PCH_TX_OBJ_END];
+ int rx_enable[PCH_TX_OBJ_END];
+ int rx_link[PCH_TX_OBJ_END];
unsigned int int_enables;
unsigned int int_stat;
struct net_device *ndev;
spinlock_t msgif_reg_lock; /* Message Interface Registers Access Lock*/
- unsigned int msg_obj[PCH_MAX_MSG_OBJ];
+ unsigned int msg_obj[PCH_TX_OBJ_END];
struct pch_can_regs __iomem *regs;
struct napi_struct napi;
unsigned int tx_obj; /* Point next Tx Obj index */
@@ -305,7 +302,7 @@ static void pch_can_check_if_busy(u32 __iomem *creq_addr, u32 num)
}

static void pch_can_set_rxtx(struct pch_can_priv *priv, u32 buff_num,
- u32 set, u32 dir)
+ int set, u32 dir)
{
unsigned long flags;
u32 ie;
@@ -324,12 +321,12 @@ static void pch_can_set_rxtx(struct pch_can_priv *priv, u32 buff_num,
iowrite32(PCH_CMASK_RDWR | PCH_CMASK_ARB | PCH_CMASK_CTRL,
&priv->regs->ifregs[dir].cmask);

- if (set == PCH_ENABLE) {
+ if (set) {
/* Setting the MsgVal and RxIE bits */
pch_can_bit_set(&priv->regs->ifregs[dir].mcont, ie);
pch_can_bit_set(&priv->regs->ifregs[dir].id2, PCH_ID_MSGVAL);

- } else if (set == PCH_DISABLE) {
+ } else {
/* Resetting the MsgVal and RxIE bits */
pch_can_bit_clear(&priv->regs->ifregs[dir].mcont, ie);
pch_can_bit_clear(&priv->regs->ifregs[dir].id2, PCH_ID_MSGVAL);
@@ -340,26 +337,22 @@ static void pch_can_set_rxtx(struct pch_can_priv *priv, u32 buff_num,
}


-static void pch_can_set_rx_all(struct pch_can_priv *priv, u32 set)
+static void pch_can_set_rx_all(struct pch_can_priv *priv, int set)
{
int i;

/* Traversing to obtain the object configured as receivers. */
- for (i = 0; i < PCH_OBJ_NUM; i++) {
- if (priv->msg_obj[i] == PCH_MSG_OBJ_RX)
- pch_can_set_rxtx(priv, i + 1, set, PCH_RX_IFREG);
- }
+ for (i = PCH_RX_OBJ_START; i <= PCH_RX_OBJ_END; i++)
+ pch_can_set_rxtx(priv, i, set, PCH_RX_IFREG);
}

-static void pch_can_set_tx_all(struct pch_can_priv *priv, u32 set)
+static void pch_can_set_tx_all(struct pch_can_priv *priv, int set)
{
int i;

/* Traversing to obtain the object configured as transmit object. */
- for (i = 0; i < PCH_OBJ_NUM; i++) {
- if (priv->msg_obj[i] == PCH_MSG_OBJ_TX)
- pch_can_set_rxtx(priv, i + 1, set, PCH_ENABLE);
- }
+ for (i = PCH_TX_OBJ_START; i <= PCH_TX_OBJ_END; i++)
+ pch_can_set_rxtx(priv, i, set, 1);
}

static u32 pch_can_get_rxtx_ir(struct pch_can_priv *priv, u32 buff_num, u32 dir)
@@ -378,9 +371,9 @@ static u32 pch_can_get_rxtx_ir(struct pch_can_priv *priv, u32 buff_num, u32 dir)

if (((ioread32(&priv->regs->ifregs[dir].id2)) & PCH_ID_MSGVAL) &&
((ioread32(&priv->regs->ifregs[dir].mcont)) & ie)) {
- enable = PCH_ENABLE;
+ enable = 1;
} else {
- enable = PCH_DISABLE;
+ enable = 0;
}
spin_unlock_irqrestore(&priv->msgif_reg_lock, flags);
return enable;
@@ -392,7 +385,7 @@ static int pch_can_int_pending(struct pch_can_priv *priv)
}

static void pch_can_set_rx_buffer_link(struct pch_can_priv *priv,
- u32 buffer_num, u32 set)
+ u32 buffer_num, int set)
{
unsigned long flags;

@@ -401,7 +394,7 @@ static void pch_can_set_rx_buffer_link(struct pch_can_priv *priv,
pch_can_check_if_busy(&priv->regs->ifregs[0].creq, buffer_num);
iowrite32(PCH_CMASK_RDWR | PCH_CMASK_CTRL,
&priv->regs->ifregs[0].cmask);
- if (set == PCH_ENABLE)
+ if (set)
pch_can_bit_clear(&priv->regs->ifregs[0].mcont,
PCH_IF_MCONT_EOB);
else
@@ -411,27 +404,28 @@ static void pch_can_set_rx_buffer_link(struct pch_can_priv *priv,
spin_unlock_irqrestore(&priv->msgif_reg_lock, flags);
}

-static void pch_can_get_rx_buffer_link(struct pch_can_priv *priv,
- u32 buffer_num, u32 *link)
+static u32 pch_can_get_rx_buffer_link(struct pch_can_priv *priv, u32 buffer_num)
{
unsigned long flags;
+ u32 link;

spin_lock_irqsave(&priv->msgif_reg_lock, flags);
iowrite32(PCH_CMASK_RX_TX_GET, &priv->regs->ifregs[0].cmask);
pch_can_check_if_busy(&priv->regs->ifregs[0].creq, buffer_num);

if (ioread32(&priv->regs->ifregs[0].mcont) & PCH_IF_MCONT_EOB)
- *link = PCH_DISABLE;
+ link = 0;
else
- *link = PCH_ENABLE;
+ link = 1;
spin_unlock_irqrestore(&priv->msgif_reg_lock, flags);
+ return link;
}

static void pch_can_clear_buffers(struct pch_can_priv *priv)
{
int i;

- for (i = 0; i < PCH_RX_OBJ_NUM; i++) {
+ for (i = PCH_RX_OBJ_START; i <= PCH_RX_OBJ_END; i++) {
iowrite32(PCH_CMASK_RX_TX_SET, &priv->regs->ifregs[0].cmask);
iowrite32(0xffff, &priv->regs->ifregs[0].mask1);
iowrite32(0xffff, &priv->regs->ifregs[0].mask2);
@@ -445,10 +439,10 @@ static void pch_can_clear_buffers(struct pch_can_priv *priv)
iowrite32(PCH_CMASK_RDWR | PCH_CMASK_MASK |
PCH_CMASK_ARB | PCH_CMASK_CTRL,
&priv->regs->ifregs[0].cmask);
- pch_can_check_if_busy(&priv->regs->ifregs[0].creq, i+1);
+ pch_can_check_if_busy(&priv->regs->ifregs[0].creq, i);
}

- for (i = i; i < PCH_OBJ_NUM; i++) {
+ for (i = PCH_TX_OBJ_START; i <= PCH_TX_OBJ_END; i++) {
iowrite32(PCH_CMASK_RX_TX_SET, &priv->regs->ifregs[1].cmask);
iowrite32(0xffff, &priv->regs->ifregs[1].mask1);
iowrite32(0xffff, &priv->regs->ifregs[1].mask2);
@@ -462,7 +456,7 @@ static void pch_can_clear_buffers(struct pch_can_priv *priv)
iowrite32(PCH_CMASK_RDWR | PCH_CMASK_MASK |
PCH_CMASK_ARB | PCH_CMASK_CTRL,
&priv->regs->ifregs[1].cmask);
- pch_can_check_if_busy(&priv->regs->ifregs[1].creq, i+1);
+ pch_can_check_if_busy(&priv->regs->ifregs[1].creq, i);
}
}

@@ -473,64 +467,62 @@ static void pch_can_config_rx_tx_buffers(struct pch_can_priv *priv)

spin_lock_irqsave(&priv->msgif_reg_lock, flags);

- for (i = 0; i < PCH_OBJ_NUM; i++) {
- if (priv->msg_obj[i] == PCH_MSG_OBJ_RX) {
- iowrite32(PCH_CMASK_RX_TX_GET,
- &priv->regs->ifregs[0].cmask);
- pch_can_check_if_busy(&priv->regs->ifregs[0].creq, i+1);
+ for (i = PCH_RX_OBJ_START; i <= PCH_RX_OBJ_END; i++) {
+ iowrite32(PCH_CMASK_RX_TX_GET,
+ &priv->regs->ifregs[0].cmask);
+ pch_can_check_if_busy(&priv->regs->ifregs[0].creq, i);

- iowrite32(0x0, &priv->regs->ifregs[0].id1);
- iowrite32(0x0, &priv->regs->ifregs[0].id2);
+ iowrite32(0x0, &priv->regs->ifregs[0].id1);
+ iowrite32(0x0, &priv->regs->ifregs[0].id2);

- pch_can_bit_set(&priv->regs->ifregs[0].mcont,
- PCH_IF_MCONT_UMASK);
+ pch_can_bit_set(&priv->regs->ifregs[0].mcont,
+ PCH_IF_MCONT_UMASK);

- /* Set FIFO mode set to 0 except last Rx Obj*/
- pch_can_bit_clear(&priv->regs->ifregs[0].mcont,
+ /* Set FIFO mode set to 0 except last Rx Obj*/
+ pch_can_bit_clear(&priv->regs->ifregs[0].mcont,
+ PCH_IF_MCONT_EOB);
+ /* In case FIFO mode, Last EoB of Rx Obj must be 1 */
+ if (i == PCH_RX_OBJ_END)
+ pch_can_bit_set(&priv->regs->ifregs[0].mcont,
PCH_IF_MCONT_EOB);
- /* In case FIFO mode, Last EoB of Rx Obj must be 1 */
- if (i == (PCH_RX_OBJ_NUM - 1))
- pch_can_bit_set(&priv->regs->ifregs[0].mcont,
- PCH_IF_MCONT_EOB);
-
- iowrite32(0, &priv->regs->ifregs[0].mask1);
- pch_can_bit_clear(&priv->regs->ifregs[0].mask2,
- 0x1fff | PCH_MASK2_MDIR_MXTD);
-
- /* Setting CMASK for writing */
- iowrite32(PCH_CMASK_RDWR | PCH_CMASK_MASK |
- PCH_CMASK_ARB | PCH_CMASK_CTRL,
- &priv->regs->ifregs[0].cmask);

- pch_can_check_if_busy(&priv->regs->ifregs[0].creq, i+1);
- } else if (priv->msg_obj[i] == PCH_MSG_OBJ_TX) {
- iowrite32(PCH_CMASK_RX_TX_GET,
- &priv->regs->ifregs[1].cmask);
- pch_can_check_if_busy(&priv->regs->ifregs[1].creq, i+1);
+ iowrite32(0, &priv->regs->ifregs[0].mask1);
+ pch_can_bit_clear(&priv->regs->ifregs[0].mask2,
+ 0x1fff | PCH_MASK2_MDIR_MXTD);
+
+ /* Setting CMASK for writing */
+ iowrite32(PCH_CMASK_RDWR | PCH_CMASK_MASK |
+ PCH_CMASK_ARB | PCH_CMASK_CTRL,
+ &priv->regs->ifregs[0].cmask);

- /* Resetting DIR bit for reception */
- iowrite32(0x0, &priv->regs->ifregs[1].id1);
- iowrite32(0x0, &priv->regs->ifregs[1].id2);
- pch_can_bit_set(&priv->regs->ifregs[1].id2,
- PCH_ID2_DIR);
+ pch_can_check_if_busy(&priv->regs->ifregs[0].creq, i);
+ }

- /* Setting EOB bit for transmitter */
- iowrite32(PCH_IF_MCONT_EOB,
- &priv->regs->ifregs[1].mcont);
+ for (i = PCH_TX_OBJ_START; i <= PCH_TX_OBJ_END; i++) {
+ iowrite32(PCH_CMASK_RX_TX_GET,
+ &priv->regs->ifregs[1].cmask);
+ pch_can_check_if_busy(&priv->regs->ifregs[1].creq, i);

- pch_can_bit_set(&priv->regs->ifregs[1].mcont,
- PCH_IF_MCONT_UMASK);
+ /* Resetting DIR bit for reception */
+ iowrite32(0x0, &priv->regs->ifregs[1].id1);
+ iowrite32(0x0, &priv->regs->ifregs[1].id2);
+ pch_can_bit_set(&priv->regs->ifregs[1].id2, PCH_ID2_DIR);

- iowrite32(0, &priv->regs->ifregs[1].mask1);
- pch_can_bit_clear(&priv->regs->ifregs[1].mask2, 0x1fff);
+ /* Setting EOB bit for transmitter */
+ iowrite32(PCH_IF_MCONT_EOB, &priv->regs->ifregs[1].mcont);

- /* Setting CMASK for writing */
- iowrite32(PCH_CMASK_RDWR | PCH_CMASK_MASK |
- PCH_CMASK_ARB | PCH_CMASK_CTRL,
- &priv->regs->ifregs[1].cmask);
+ pch_can_bit_set(&priv->regs->ifregs[1].mcont,
+ PCH_IF_MCONT_UMASK);

- pch_can_check_if_busy(&priv->regs->ifregs[1].creq, i+1);
- }
+ iowrite32(0, &priv->regs->ifregs[1].mask1);
+ pch_can_bit_clear(&priv->regs->ifregs[1].mask2, 0x1fff);
+
+ /* Setting CMASK for writing */
+ iowrite32(PCH_CMASK_RDWR | PCH_CMASK_MASK |
+ PCH_CMASK_ARB | PCH_CMASK_CTRL,
+ &priv->regs->ifregs[1].cmask);
+
+ pch_can_check_if_busy(&priv->regs->ifregs[1].creq, i);
}
spin_unlock_irqrestore(&priv->msgif_reg_lock, flags);
}
@@ -574,7 +566,20 @@ static void pch_can_int_clr(struct pch_can_priv *priv, u32 mask)
}

/* Clear interrupt for transmit object */
- if (priv->msg_obj[mask - 1] == PCH_MSG_OBJ_TX) {
+ if ((mask >= PCH_RX_OBJ_START) && (mask <= PCH_RX_OBJ_END)) {
+ /* Setting CMASK for clearing the reception interrupts. */
+ iowrite32(PCH_CMASK_RDWR | PCH_CMASK_CTRL | PCH_CMASK_ARB,
+ &priv->regs->ifregs[0].cmask);
+
+ /* Clearing the Dir bit. */
+ pch_can_bit_clear(&priv->regs->ifregs[0].id2, PCH_ID2_DIR);
+
+ /* Clearing NewDat & IntPnd */
+ pch_can_bit_clear(&priv->regs->ifregs[0].mcont,
+ PCH_IF_MCONT_NEWDAT | PCH_IF_MCONT_INTPND);
+
+ pch_can_check_if_busy(&priv->regs->ifregs[0].creq, mask);
+ } else if ((mask >= PCH_TX_OBJ_START) && (mask <= PCH_TX_OBJ_END)) {
/* Setting CMASK for clearing interrupts for
frame transmission. */
iowrite32(PCH_CMASK_RDWR | PCH_CMASK_CTRL | PCH_CMASK_ARB,
@@ -590,19 +595,6 @@ static void pch_can_int_clr(struct pch_can_priv *priv, u32 mask)
PCH_IF_MCONT_NEWDAT | PCH_IF_MCONT_INTPND |
PCH_IF_MCONT_TXRQXT);
pch_can_check_if_busy(&priv->regs->ifregs[1].creq, mask);
- } else if (priv->msg_obj[mask - 1] == PCH_MSG_OBJ_RX) {
- /* Setting CMASK for clearing the reception interrupts. */
- iowrite32(PCH_CMASK_RDWR | PCH_CMASK_CTRL | PCH_CMASK_ARB,
- &priv->regs->ifregs[0].cmask);
-
- /* Clearing the Dir bit. */
- pch_can_bit_clear(&priv->regs->ifregs[0].id2, PCH_ID2_DIR);
-
- /* Clearing NewDat & IntPnd */
- pch_can_bit_clear(&priv->regs->ifregs[0].mcont,
- PCH_IF_MCONT_NEWDAT | PCH_IF_MCONT_INTPND);
-
- pch_can_check_if_busy(&priv->regs->ifregs[0].creq, mask);
}
}

@@ -790,8 +782,8 @@ static int pch_can_rx_normal(struct net_device *ndev, u32 int_stat)
cf->can_dlc = 0;
cf->can_id |= CAN_RTR_FLAG;
} else {
- cf->can_dlc = ((ioread32(&priv->regs->ifregs[0].mcont))
- & 0x0f);
+ cf->can_dlc =
+ ((ioread32(&priv->regs->ifregs[0].mcont)) & 0x0f);
}

for (i = 0, j = 0; i < cf->can_dlc; j++) {
@@ -829,7 +821,7 @@ static int pch_can_rx_normal(struct net_device *ndev, u32 int_stat)
RX_NEXT:
/* Reading the messsage object from the Message RAM */
iowrite32(PCH_CMASK_RX_TX_GET, &priv->regs->ifregs[0].cmask);
- pch_can_check_if_busy(&priv->regs->ifregs[0].creq, k + 1);
+ pch_can_check_if_busy(&priv->regs->ifregs[0].creq, k);
reg = ioread32(&priv->regs->ifregs[0].mcont);
}

@@ -877,29 +869,27 @@ INT_STAT:
}

MSG_OBJ:
- if ((int_stat >= 1) && (int_stat <= PCH_RX_OBJ_NUM)) {
+ if ((int_stat >= PCH_RX_OBJ_START) && (int_stat <= PCH_RX_OBJ_END)) {
spin_lock_irqsave(&priv->msgif_reg_lock, flags);
rcv_pkts = pch_can_rx_normal(ndev, int_stat);
spin_unlock_irqrestore(&priv->msgif_reg_lock, flags);
if (rcv_pkts < 0)
return 0;
- } else if ((int_stat > PCH_RX_OBJ_NUM) && (int_stat <= PCH_OBJ_NUM)) {
- if (priv->msg_obj[int_stat - 1] == PCH_MSG_OBJ_TX) {
- /* Handle transmission interrupt */
- can_get_echo_skb(ndev, int_stat - PCH_RX_OBJ_NUM - 1);
- spin_lock_irqsave(&priv->msgif_reg_lock, flags);
- iowrite32(PCH_CMASK_RX_TX_GET | PCH_CMASK_CLRINTPND,
- &priv->regs->ifregs[1].cmask);
- dlc = ioread32(&priv->regs->ifregs[1].mcont) &
- PCH_IF_MCONT_DLC;
- pch_can_check_if_busy(&priv->regs->ifregs[1].creq,
- int_stat);
- spin_unlock_irqrestore(&priv->msgif_reg_lock, flags);
- if (dlc > 8)
- dlc = 8;
- stats->tx_bytes += dlc;
- stats->tx_packets++;
- }
+ } else if ((int_stat >= PCH_TX_OBJ_START) &&
+ (int_stat <= PCH_TX_OBJ_END)) {
+ /* Handle transmission interrupt */
+ can_get_echo_skb(ndev, int_stat - PCH_RX_OBJ_END - 1);
+ spin_lock_irqsave(&priv->msgif_reg_lock, flags);
+ iowrite32(PCH_CMASK_RX_TX_GET | PCH_CMASK_CLRINTPND,
+ &priv->regs->ifregs[1].cmask);
+ dlc = ioread32(&priv->regs->ifregs[1].mcont) &
+ PCH_IF_MCONT_DLC;
+ pch_can_check_if_busy(&priv->regs->ifregs[1].creq, int_stat);
+ spin_unlock_irqrestore(&priv->msgif_reg_lock, flags);
+ if (dlc > 8)
+ dlc = 8;
+ stats->tx_bytes += dlc;
+ stats->tx_packets++;
}

int_stat = pch_can_int_pending(priv);
@@ -1061,12 +1051,12 @@ static netdev_tx_t pch_xmit(struct sk_buff *skb, struct net_device *ndev)
if (can_dropped_invalid_skb(ndev, skb))
return NETDEV_TX_OK;

- if (priv->tx_obj == (PCH_OBJ_NUM + 1)) { /* Point tail Obj */
+ if (priv->tx_obj == PCH_TX_OBJ_END) { /* Point tail Obj */
while (pch_get_msg_obj_sts(ndev, (((1 << PCH_TX_OBJ_NUM)-1) <<
PCH_RX_OBJ_NUM)))
udelay(500);

- priv->tx_obj = PCH_RX_OBJ_NUM + 1; /* Point head of Tx Obj ID */
+ priv->tx_obj = PCH_TX_OBJ_START; /* Point head of Tx Obj ID */
tx_buffer_avail = priv->tx_obj; /* Point Tail of Tx Obj */
} else {
tx_buffer_avail = priv->tx_obj;
@@ -1110,7 +1100,7 @@ static netdev_tx_t pch_xmit(struct sk_buff *skb, struct net_device *ndev)
(&priv->regs->ifregs[1].dataa1) + j*4);
}

- can_put_echo_skb(skb, ndev, tx_buffer_avail - PCH_RX_OBJ_NUM - 1);
+ can_put_echo_skb(skb, ndev, tx_buffer_avail - PCH_RX_OBJ_END - 1);

/* Updating the size of the data. */
pch_can_bit_clear(&priv->regs->ifregs[1].mcont, 0x0f);
@@ -1185,23 +1175,16 @@ static int pch_can_suspend(struct pci_dev *pdev, pm_message_t state)
pch_can_set_int_enables(priv, PCH_CAN_DISABLE);

/* Save Tx buffer enable state */
- for (i = 0; i < PCH_OBJ_NUM; i++) {
- if (priv->msg_obj[i] == PCH_MSG_OBJ_TX)
- priv->tx_enable[i] = pch_can_get_rxtx_ir(priv, i + 1,
- PCH_TX_IFREG);
- }
+ for (i = PCH_TX_OBJ_START; i <= PCH_TX_OBJ_END; i++)
+ priv->tx_enable[i] = pch_can_get_rxtx_ir(priv, i, PCH_TX_IFREG);

/* Disable all Transmit buffers */
pch_can_set_tx_all(priv, 0);

/* Save Rx buffer enable state */
- for (i = 0; i < PCH_OBJ_NUM; i++) {
- if (priv->msg_obj[i] == PCH_MSG_OBJ_RX) {
- priv->rx_enable[i] = pch_can_get_rxtx_ir(priv, i + 1,
- PCH_RX_IFREG);
- pch_can_get_rx_buffer_link(priv, i + 1,
- &(priv->rx_link[i]));
- }
+ for (i = PCH_RX_OBJ_START; i <= PCH_RX_OBJ_END; i++) {
+ priv->rx_enable[i] = pch_can_get_rxtx_ir(priv, i, PCH_RX_IFREG);
+ priv->rx_link[i] = pch_can_get_rx_buffer_link(priv, i);
}

/* Disable all Receive buffers */
@@ -1253,24 +1236,16 @@ static int pch_can_resume(struct pci_dev *pdev)
pch_can_set_optmode(priv);

/* Enabling the transmit buffer. */
- for (i = 0; i < PCH_OBJ_NUM; i++) {
- if (priv->msg_obj[i] == PCH_MSG_OBJ_TX)
- pch_can_set_rxtx(priv, i, priv->tx_enable[i],
- PCH_TX_IFREG);
- }
+ for (i = PCH_TX_OBJ_START; i <= PCH_TX_OBJ_END; i++)
+ pch_can_set_rxtx(priv, i, priv->tx_enable[i], PCH_TX_IFREG);

/* Configuring the receive buffer and enabling them. */
- for (i = 0; i < PCH_OBJ_NUM; i++) {
- if (priv->msg_obj[i] == PCH_MSG_OBJ_RX) {
- /* Restore buffer link */
- pch_can_set_rx_buffer_link(priv, i + 1,
- priv->rx_link[i]);
+ for (i = PCH_RX_OBJ_START; i <= PCH_RX_OBJ_END; i++) {
+ /* Restore buffer link */
+ pch_can_set_rx_buffer_link(priv, i, priv->rx_link[i]);

- /* Restore buffer enables */
- pch_can_set_rxtx(priv, i, priv->rx_enable[i],
- PCH_RX_IFREG);
-
- }
+ /* Restore buffer enables */
+ pch_can_set_rxtx(priv, i, priv->rx_enable[i], PCH_RX_IFREG);
}

/* Enable CAN Interrupts */
@@ -1303,7 +1278,6 @@ static int __devinit pch_can_probe(struct pci_dev *pdev,
struct net_device *ndev;
struct pch_can_priv *priv;
int rc;
- int index;
void __iomem *addr;

rc = pci_enable_device(pdev);
@@ -1325,7 +1299,7 @@ static int __devinit pch_can_probe(struct pci_dev *pdev,
goto probe_exit_ipmap;
}

- ndev = alloc_candev(sizeof(struct pch_can_priv), PCH_TX_OBJ_NUM);
+ ndev = alloc_candev(sizeof(struct pch_can_priv), PCH_TX_OBJ_END);
if (!ndev) {
rc = -ENOMEM;
dev_err(&pdev->dev, "Failed alloc_candev\n");
@@ -1341,7 +1315,7 @@ static int __devinit pch_can_probe(struct pci_dev *pdev,
priv->can.do_get_berr_counter = pch_can_get_berr_counter;
priv->can.ctrlmode_supported = CAN_CTRLMODE_LISTENONLY |
CAN_CTRLMODE_LOOPBACK;
- priv->tx_obj = PCH_RX_OBJ_NUM + 1; /* Point head of Tx Obj */
+ priv->tx_obj = PCH_TX_OBJ_START; /* Point head of Tx Obj */

ndev->irq = pdev->irq;
ndev->flags |= IFF_ECHO;
@@ -1349,15 +1323,9 @@ static int __devinit pch_can_probe(struct pci_dev *pdev,
pci_set_drvdata(pdev, ndev);
SET_NETDEV_DEV(ndev, &pdev->dev);
ndev->netdev_ops = &pch_can_netdev_ops;
-
priv->can.clock.freq = PCH_CAN_CLK; /* Hz */
- for (index = 0; index < PCH_RX_OBJ_NUM;)
- priv->msg_obj[index++] = PCH_MSG_OBJ_RX;
-
- for (index = index; index < PCH_OBJ_NUM;)
- priv->msg_obj[index++] = PCH_MSG_OBJ_TX;

- netif_napi_add(ndev, &priv->napi, pch_can_rx_poll, PCH_RX_OBJ_NUM);
+ netif_napi_add(ndev, &priv->napi, pch_can_rx_poll, PCH_RX_OBJ_END);

rc = register_candev(ndev);
if (rc) {
--
1.6.0.6


\
 
 \ /
  Last update: 2010-11-19 06:47    [W:0.043 / U:0.788 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site