[PATCH 2/3] net: via-rhine: reduce usage of the PCI-specific struct

From: Alexey Charkov
Date: Mon Jan 27 2014 - 06:53:59 EST

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Use more generic data structures instead of struct pci_dev wherever
possible in preparation for OF bus binding

Signed-off-by: Alexey Charkov <alchark@xxxxxxxxx>
Signed-off-by: Roger Luethi <rl@xxxxxxxxxxx>
---
drivers/net/ethernet/via/via-rhine.c | 116 +++++++++++++++++++----------------
1 file changed, 62 insertions(+), 54 deletions(-)

diff --git a/drivers/net/ethernet/via/via-rhine.c b/drivers/net/ethernet/via/via-rhine.c
index fee8732..95c2e93 100644
--- a/drivers/net/ethernet/via/via-rhine.c
+++ b/drivers/net/ethernet/via/via-rhine.c
@@ -446,7 +446,8 @@ struct rhine_private {
unsigned char *tx_bufs;
dma_addr_t tx_bufs_dma;

- struct pci_dev *pdev;
+ int revision;
+ int irq;
long pioaddr;
struct net_device *dev;
struct napi_struct napi;
@@ -701,7 +702,7 @@ static void rhine_reload_eeprom(long pioaddr, struct net_device *dev)
static void rhine_poll(struct net_device *dev)
{
struct rhine_private *rp = netdev_priv(dev);
- const int irq = rp->pdev->irq;
+ const int irq = rp->irq;

disable_irq(irq);
rhine_interrupt(irq, dev);
@@ -871,6 +872,8 @@ static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct net_device *dev;
struct rhine_private *rp;
+ struct device *hwdev = &pdev->dev;
+ int revision = pdev->revision;
int i, rc;
u32 quirks;
long pioaddr;
@@ -893,21 +896,19 @@ static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
phy_id = 0;
quirks = 0;
name = "Rhine";
- if (pdev->revision < VTunknown0) {
+ if (revision < VTunknown0) {
quirks = rqRhineI;
io_size = 128;
- }
- else if (pdev->revision >= VT6102) {
+ } else if (revision >= VT6102) {
quirks = rqWOL | rqForceReset;
- if (pdev->revision < VT6105) {
+ if (revision < VT6105) {
name = "Rhine II";
quirks |= rqStatusWBRace; /* Rhine-II exclusive */
- }
- else {
+ } else {
phy_id = 1; /* Integrated PHY, phy_id fixed to 1 */
- if (pdev->revision >= VT6105_B0)
+ if (revision >= VT6105_B0)
quirks |= rq6patterns;
- if (pdev->revision < VT6105M)
+ if (revision < VT6105M)
name = "Rhine III";
else
name = "Rhine III (Management Adapter)";
@@ -919,10 +920,9 @@ static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_out;

/* this should always be supported */
- rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+ rc = dma_set_mask(hwdev, DMA_BIT_MASK(32));
if (rc) {
- dev_err(&pdev->dev,
- "32-bit DMA addresses not supported by the card!?\n");
+ dev_err(hwdev, "32-bit DMA addresses not supported by the card!?\n");
goto err_out;
}

@@ -930,7 +930,7 @@ static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if ((pci_resource_len(pdev, 0) < io_size) ||
(pci_resource_len(pdev, 1) < io_size)) {
rc = -EIO;
- dev_err(&pdev->dev, "Insufficient PCI resources, aborting\n");
+ dev_err(hwdev, "Insufficient PCI resources, aborting\n");
goto err_out;
}

@@ -944,13 +944,13 @@ static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
rc = -ENOMEM;
goto err_out;
}
- SET_NETDEV_DEV(dev, &pdev->dev);
+ SET_NETDEV_DEV(dev, hwdev);

rp = netdev_priv(dev);
rp->dev = dev;
+ rp->revision = revision;
rp->quirks = quirks;
rp->pioaddr = pioaddr;
- rp->pdev = pdev;
rp->msg_enable = netif_msg_init(debug, RHINE_MSG_DEFAULT);

rc = pci_request_regions(pdev, DRV_NAME);
@@ -960,9 +960,9 @@ static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
ioaddr = pci_iomap(pdev, bar, io_size);
if (!ioaddr) {
rc = -EIO;
- dev_err(&pdev->dev,
+ dev_err(hwdev,
"ioremap failed for device %s, region 0x%X @ 0x%lX\n",
- pci_name(pdev), io_size, memaddr);
+ dev_name(hwdev), io_size, memaddr);
goto err_out_free_res;
}

@@ -977,7 +977,7 @@ static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
unsigned char b = readb(ioaddr+reg);
if (a != b) {
rc = -EIO;
- dev_err(&pdev->dev,
+ dev_err(hwdev,
"MMIO do not match PIO [%02x] (%02x != %02x)\n",
reg, a, b);
goto err_out_unmap;
@@ -986,6 +986,7 @@ static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
#endif /* USE_MMIO */

rp->base = ioaddr;
+ rp->irq = pdev->irq;

u64_stats_init(&rp->tx_stats.syncp);
u64_stats_init(&rp->rx_stats.syncp);
@@ -1030,7 +1031,7 @@ static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (rp->quirks & rqRhineI)
dev->features |= NETIF_F_SG|NETIF_F_HW_CSUM;

- if (pdev->revision >= VT6105M)
+ if (rp->revision >= VT6105M)
dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_HW_VLAN_CTAG_FILTER;
@@ -1047,9 +1048,9 @@ static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
#else
(long)ioaddr,
#endif
- dev->dev_addr, pdev->irq);
+ dev->dev_addr, rp->irq);

- pci_set_drvdata(pdev, dev);
+ dev_set_drvdata(hwdev, dev);

{
u16 mii_cmd;
@@ -1091,10 +1092,11 @@ err_out:
static int alloc_ring(struct net_device* dev)
{
struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
void *ring;
dma_addr_t ring_dma;

- ring = dma_alloc_coherent(&rp->pdev->dev,
+ ring = dma_alloc_coherent(hwdev,
RX_RING_SIZE * sizeof(struct rx_desc) +
TX_RING_SIZE * sizeof(struct tx_desc),
&ring_dma,
@@ -1104,12 +1106,12 @@ static int alloc_ring(struct net_device* dev)
return -ENOMEM;
}
if (rp->quirks & rqRhineI) {
- rp->tx_bufs = dma_alloc_coherent(&rp->pdev->dev,
+ rp->tx_bufs = dma_alloc_coherent(hwdev,
PKT_BUF_SZ * TX_RING_SIZE,
&rp->tx_bufs_dma,
GFP_ATOMIC);
if (rp->tx_bufs == NULL) {
- dma_free_coherent(&rp->pdev->dev,
+ dma_free_coherent(hwdev,
RX_RING_SIZE * sizeof(struct rx_desc) +
TX_RING_SIZE * sizeof(struct tx_desc),
ring, ring_dma);
@@ -1128,15 +1130,16 @@ static int alloc_ring(struct net_device* dev)
static void free_ring(struct net_device* dev)
{
struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;

- dma_free_coherent(&rp->pdev->dev,
+ dma_free_coherent(hwdev,
RX_RING_SIZE * sizeof(struct rx_desc) +
TX_RING_SIZE * sizeof(struct tx_desc),
rp->rx_ring, rp->rx_ring_dma);
rp->tx_ring = NULL;

if (rp->tx_bufs)
- dma_free_coherent(&rp->pdev->dev, PKT_BUF_SZ * TX_RING_SIZE,
+ dma_free_coherent(hwdev, PKT_BUF_SZ * TX_RING_SIZE,
rp->tx_bufs, rp->tx_bufs_dma);

rp->tx_bufs = NULL;
@@ -1146,6 +1149,7 @@ static void free_ring(struct net_device* dev)
static void alloc_rbufs(struct net_device *dev)
{
struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
dma_addr_t next;
int i;

@@ -1174,9 +1178,9 @@ static void alloc_rbufs(struct net_device *dev)
break;

rp->rx_skbuff_dma[i] =
- dma_map_single(&rp->pdev->dev, skb->data, rp->rx_buf_sz,
+ dma_map_single(hwdev, skb->data, rp->rx_buf_sz,
DMA_FROM_DEVICE);
- if (dma_mapping_error(&rp->pdev->dev, rp->rx_skbuff_dma[i])) {
+ if (dma_mapping_error(hwdev, rp->rx_skbuff_dma[i])) {
rp->rx_skbuff_dma[i] = 0;
dev_kfree_skb(skb);
break;
@@ -1190,6 +1194,7 @@ static void alloc_rbufs(struct net_device *dev)
static void free_rbufs(struct net_device* dev)
{
struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
int i;

/* Free all the skbuffs in the Rx queue. */
@@ -1197,7 +1202,7 @@ static void free_rbufs(struct net_device* dev)
rp->rx_ring[i].rx_status = 0;
rp->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */
if (rp->rx_skbuff[i]) {
- dma_unmap_single(&rp->pdev->dev,
+ dma_unmap_single(hwdev,
rp->rx_skbuff_dma[i],
rp->rx_buf_sz, DMA_FROM_DEVICE);
dev_kfree_skb(rp->rx_skbuff[i]);
@@ -1230,6 +1235,7 @@ static void alloc_tbufs(struct net_device* dev)
static void free_tbufs(struct net_device* dev)
{
struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
int i;

for (i = 0; i < TX_RING_SIZE; i++) {
@@ -1238,7 +1244,7 @@ static void free_tbufs(struct net_device* dev)
rp->tx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */
if (rp->tx_skbuff[i]) {
if (rp->tx_skbuff_dma[i]) {
- dma_unmap_single(&rp->pdev->dev,
+ dma_unmap_single(hwdev,
rp->tx_skbuff_dma[i],
rp->tx_skbuff[i]->len,
DMA_TO_DEVICE);
@@ -1469,7 +1475,7 @@ static void init_registers(struct net_device *dev)

rhine_set_rx_mode(dev);

- if (rp->pdev->revision >= VT6105M)
+ if (rp->revision >= VT6105M)
rhine_init_cam_filter(dev);

napi_enable(&rp->napi);
@@ -1581,16 +1587,15 @@ static int rhine_open(struct net_device *dev)
void __iomem *ioaddr = rp->base;
int rc;

- rc = request_irq(rp->pdev->irq, rhine_interrupt, IRQF_SHARED, dev->name,
- dev);
+ rc = request_irq(rp->irq, rhine_interrupt, IRQF_SHARED, dev->name, dev);
if (rc)
return rc;

- netif_dbg(rp, ifup, dev, "%s() irq %d\n", __func__, rp->pdev->irq);
+ netif_dbg(rp, ifup, dev, "%s() irq %d\n", __func__, rp->irq);

rc = alloc_ring(dev);
if (rc) {
- free_irq(rp->pdev->irq, dev);
+ free_irq(rp->irq, dev);
return rc;
}
alloc_rbufs(dev);
@@ -1659,6 +1664,7 @@ static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
struct net_device *dev)
{
struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
void __iomem *ioaddr = rp->base;
unsigned entry;

@@ -1695,9 +1701,9 @@ static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
rp->tx_bufs));
} else {
rp->tx_skbuff_dma[entry] =
- dma_map_single(&rp->pdev->dev, skb->data, skb->len,
+ dma_map_single(hwdev, skb->data, skb->len,
DMA_TO_DEVICE);
- if (dma_mapping_error(&rp->pdev->dev, rp->tx_skbuff_dma[entry])) {
+ if (dma_mapping_error(hwdev, rp->tx_skbuff_dma[entry])) {
dev_kfree_skb(skb);
rp->tx_skbuff_dma[entry] = 0;
dev->stats.tx_dropped++;
@@ -1788,6 +1794,7 @@ static irqreturn_t rhine_interrupt(int irq, void *dev_instance)
static void rhine_tx(struct net_device *dev)
{
struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
int txstatus = 0, entry = rp->dirty_tx % TX_RING_SIZE;

/* find and cleanup dirty tx descriptors */
@@ -1831,7 +1838,7 @@ static void rhine_tx(struct net_device *dev)
}
/* Free the original skb. */
if (rp->tx_skbuff_dma[entry]) {
- dma_unmap_single(&rp->pdev->dev,
+ dma_unmap_single(hwdev,
rp->tx_skbuff_dma[entry],
rp->tx_skbuff[entry]->len,
DMA_TO_DEVICE);
@@ -1863,6 +1870,7 @@ static inline u16 rhine_get_vlan_tci(struct sk_buff *skb, int data_size)
static int rhine_rx(struct net_device *dev, int limit)
{
struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
int count;
int entry = rp->cur_rx % RX_RING_SIZE;

@@ -1924,7 +1932,7 @@ static int rhine_rx(struct net_device *dev, int limit)
if (pkt_len < rx_copybreak)
skb = netdev_alloc_skb_ip_align(dev, pkt_len);
if (skb) {
- dma_sync_single_for_cpu(&rp->pdev->dev,
+ dma_sync_single_for_cpu(hwdev,
rp->rx_skbuff_dma[entry],
rp->rx_buf_sz,
DMA_FROM_DEVICE);
@@ -1933,7 +1941,7 @@ static int rhine_rx(struct net_device *dev, int limit)
rp->rx_skbuff[entry]->data,
pkt_len);
skb_put(skb, pkt_len);
- dma_sync_single_for_device(&rp->pdev->dev,
+ dma_sync_single_for_device(hwdev,
rp->rx_skbuff_dma[entry],
rp->rx_buf_sz,
DMA_FROM_DEVICE);
@@ -1945,7 +1953,7 @@ static int rhine_rx(struct net_device *dev, int limit)
}
rp->rx_skbuff[entry] = NULL;
skb_put(skb, pkt_len);
- dma_unmap_single(&rp->pdev->dev,
+ dma_unmap_single(hwdev,
rp->rx_skbuff_dma[entry],
rp->rx_buf_sz,
DMA_FROM_DEVICE);
@@ -1979,10 +1987,11 @@ static int rhine_rx(struct net_device *dev, int limit)
if (skb == NULL)
break; /* Better luck next round. */
rp->rx_skbuff_dma[entry] =
- dma_map_single(&rp->pdev->dev, skb->data,
+ dma_map_single(hwdev, skb->data,
rp->rx_buf_sz,
DMA_FROM_DEVICE);
- if (dma_mapping_error(&rp->pdev->dev, rp->rx_skbuff_dma[entry])) {
+ if (dma_mapping_error(hwdev,
+ rp->rx_skbuff_dma[entry])) {
dev_kfree_skb(skb);
rp->rx_skbuff_dma[entry] = 0;
break;
@@ -2103,7 +2112,7 @@ static void rhine_set_rx_mode(struct net_device *dev)
/* Too many to match, or accept all multicasts. */
iowrite32(0xffffffff, ioaddr + MulticastFilter0);
iowrite32(0xffffffff, ioaddr + MulticastFilter1);
- } else if (rp->pdev->revision >= VT6105M) {
+ } else if (rp->revision >= VT6105M) {
int i = 0;
u32 mCAMmask = 0; /* 32 mCAMs (6105M and better) */
netdev_for_each_mc_addr(ha, dev) {
@@ -2125,7 +2134,7 @@ static void rhine_set_rx_mode(struct net_device *dev)
iowrite32(mc_filter[1], ioaddr + MulticastFilter1);
}
/* enable/disable VLAN receive filtering */
- if (rp->pdev->revision >= VT6105M) {
+ if (rp->revision >= VT6105M) {
if (dev->flags & IFF_PROMISC)
BYTE_REG_BITS_OFF(BCR1_VIDFR, ioaddr + PCIBusConfig1);
else
@@ -2136,11 +2145,11 @@ static void rhine_set_rx_mode(struct net_device *dev)

static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
- struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;

strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
strlcpy(info->version, DRV_VERSION, sizeof(info->version));
- strlcpy(info->bus_info, pci_name(rp->pdev), sizeof(info->bus_info));
+ strlcpy(info->bus_info, dev_name(hwdev), sizeof(info->bus_info));
}

static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
@@ -2277,7 +2286,7 @@ static int rhine_close(struct net_device *dev)
/* Stop the chip's Tx and Rx processes. */
iowrite16(CmdStop, ioaddr + ChipCmd);

- free_irq(rp->pdev->irq, dev);
+ free_irq(rp->irq, dev);
free_rbufs(dev);
free_tbufs(dev);
free_ring(dev);
@@ -2354,8 +2363,7 @@ static void rhine_shutdown (struct pci_dev *pdev)
#ifdef CONFIG_PM_SLEEP
static int rhine_suspend(struct device *device)
{
- struct pci_dev *pdev = to_pci_dev(device);
- struct net_device *dev = pci_get_drvdata(pdev);
+ struct net_device *dev = dev_get_drvdata(device);
struct rhine_private *rp = netdev_priv(dev);

if (!netif_running(dev))
@@ -2367,15 +2375,15 @@ static int rhine_suspend(struct device *device)

netif_device_detach(dev);

- rhine_shutdown(pdev);
+ if (!strncmp(device->bus->name, "pci", 3))
+ rhine_shutdown(to_pci_dev(device));

return 0;
}

static int rhine_resume(struct device *device)
{
- struct pci_dev *pdev = to_pci_dev(device);
- struct net_device *dev = pci_get_drvdata(pdev);
+ struct net_device *dev = dev_get_drvdata(device);
struct rhine_private *rp = netdev_priv(dev);

if (!netif_running(dev))
--
1.8.5.1

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Next message: Alexey Charkov: "[PATCH 3/3] net: via-rhine: add OF bus binding"
Previous message: Alexey Charkov: "[PATCH 1/3] net: via-rhine: switch to generic DMA functions"
In reply to: Ben Hutchings: "Re: [PATCH 1/3] net: via-rhine: switch to generic DMA functions"
Next in thread: Alexey Charkov: "[PATCH 3/3] net: via-rhine: add OF bus binding"
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