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FS_ENET: Add polling support

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Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Vitaly Bordug 2007-09-18 20:05:35 +04:00 committed by David S. Miller
parent aa90f50321
commit 9b8ee8e7d6
5 changed files with 80 additions and 63 deletions
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71
drivers/net/fs_enet/fs_enet-main.c
View File

@ -1,17 +1,17 @@
/*
* Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
*
* Copyright (c) 2003 Intracom S.A.
* Copyright (c) 2003 Intracom S.A.
* by Pantelis Antoniou <panto@intracom.gr>
*
* 2005 (c) MontaVista Software, Inc.
*
* 2005 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com>
* and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
@ -59,6 +59,9 @@ module_param(fs_enet_debug, int, 0);
MODULE_PARM_DESC(fs_enet_debug,
"Freescale bitmapped debugging message enable value");
#ifdef CONFIG_NET_POLL_CONTROLLER
static void fs_enet_netpoll(struct net_device *dev);
#endif
static void fs_set_multicast_list(struct net_device *dev)
{
@ -104,7 +107,7 @@ static int fs_enet_rx_napi(struct napi_struct *napi, int budget)
dev->name);
/*
* Check for errors.
* Check for errors.
*/
if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
@ -181,7 +184,7 @@ static int fs_enet_rx_napi(struct napi_struct *napi, int budget)
CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
/*
* Update BD pointer to next entry.
* Update BD pointer to next entry.
*/
if ((sc & BD_ENET_RX_WRAP) == 0)
bdp++;
@ -234,7 +237,7 @@ static int fs_enet_rx_non_napi(struct net_device *dev)
dev->name);
/*
* Check for errors.
* Check for errors.
*/
if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
@ -312,7 +315,7 @@ static int fs_enet_rx_non_napi(struct net_device *dev)
CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
/*
* Update BD pointer to next entry.
* Update BD pointer to next entry.
*/
if ((sc & BD_ENET_RX_WRAP) == 0)
bdp++;
@ -349,7 +352,7 @@ static void fs_enet_tx(struct net_device *dev)
skb = fep->tx_skbuff[dirtyidx];
/*
* Check for errors.
* Check for errors.
*/
if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC |
BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) {
@ -389,13 +392,13 @@ static void fs_enet_tx(struct net_device *dev)
skb->len, DMA_TO_DEVICE);
/*
* Free the sk buffer associated with this last transmit.
* Free the sk buffer associated with this last transmit.
*/
dev_kfree_skb_irq(skb);
fep->tx_skbuff[dirtyidx] = NULL;
/*
* Update pointer to next buffer descriptor to be transmitted.
* Update pointer to next buffer descriptor to be transmitted.
*/
if ((sc & BD_ENET_TX_WRAP) == 0)
bdp++;
@ -491,7 +494,7 @@ void fs_init_bds(struct net_device *dev)
fep->cur_rx = fep->rx_bd_base;
/*
* Initialize the receive buffer descriptors.
* Initialize the receive buffer descriptors.
*/
for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
skb = dev_alloc_skb(ENET_RX_FRSIZE);
@ -511,7 +514,7 @@ void fs_init_bds(struct net_device *dev)
((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
}
/*
* if we failed, fillup remainder
* if we failed, fillup remainder
*/
for (; i < fep->rx_ring; i++, bdp++) {
fep->rx_skbuff[i] = NULL;
@ -519,7 +522,7 @@ void fs_init_bds(struct net_device *dev)
}
/*
* ...and the same for transmit.
* ...and the same for transmit.
*/
for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
fep->tx_skbuff[i] = NULL;
@ -537,7 +540,7 @@ void fs_cleanup_bds(struct net_device *dev)
int i;
/*
* Reset SKB transmit buffers.
* Reset SKB transmit buffers.
*/
for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
if ((skb = fep->tx_skbuff[i]) == NULL)
@ -552,7 +555,7 @@ void fs_cleanup_bds(struct net_device *dev)
}
/*
* Reset SKB receive buffers
* Reset SKB receive buffers
*/
for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
if ((skb = fep->rx_skbuff[i]) == NULL)
@ -582,7 +585,7 @@ static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
spin_lock_irqsave(&fep->tx_lock, flags);
/*
* Fill in a Tx ring entry
* Fill in a Tx ring entry
*/
bdp = fep->cur_tx;
@ -601,19 +604,19 @@ static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
curidx = bdp - fep->tx_bd_base;
/*
* Clear all of the status flags.
* Clear all of the status flags.
*/
CBDC_SC(bdp, BD_ENET_TX_STATS);
/*
* Save skb pointer.
* Save skb pointer.
*/
fep->tx_skbuff[curidx] = skb;
fep->stats.tx_bytes += skb->len;
/*
* Push the data cache so the CPM does not get stale memory data.
* Push the data cache so the CPM does not get stale memory data.
*/
CBDW_BUFADDR(bdp, dma_map_single(fep->dev,
skb->data, skb->len, DMA_TO_DEVICE));
@ -622,7 +625,7 @@ static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
dev->trans_start = jiffies;
/*
* If this was the last BD in the ring, start at the beginning again.
* If this was the last BD in the ring, start at the beginning again.
*/
if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0)
fep->cur_tx++;
@ -1003,13 +1006,13 @@ static struct net_device *fs_init_instance(struct device *dev,
spin_lock_init(&fep->tx_lock);
/*
* Set the Ethernet address.
* Set the Ethernet address.
*/
for (i = 0; i < 6; i++)
ndev->dev_addr[i] = fpi->macaddr[i];
r = (*fep->ops->allocate_bd)(ndev);
if (fep->ring_base == NULL) {
printk(KERN_ERR DRV_MODULE_NAME
": %s buffer descriptor alloc failed (%d).\n", ndev->name, r);
@ -1028,7 +1031,7 @@ static struct net_device *fs_init_instance(struct device *dev,
fep->rx_ring = fpi->rx_ring;
/*
* The FEC Ethernet specific entries in the device structure.
* The FEC Ethernet specific entries in the device structure.
*/
ndev->open = fs_enet_open;
ndev->hard_start_xmit = fs_enet_start_xmit;
@ -1037,6 +1040,11 @@ static struct net_device *fs_init_instance(struct device *dev,
ndev->stop = fs_enet_close;
ndev->get_stats = fs_enet_get_stats;
ndev->set_multicast_list = fs_set_multicast_list;
#ifdef CONFIG_NET_POLL_CONTROLLER
ndev->poll_controller = fs_enet_netpoll;
#endif
netif_napi_add(ndev, &fep->napi,
fs_enet_rx_napi, fpi->napi_weight);
@ -1251,7 +1259,7 @@ static int __init fs_init(void)
err:
cleanup_immap();
return r;
}
static void __exit fs_cleanup(void)
@ -1262,6 +1270,15 @@ static void __exit fs_cleanup(void)
cleanup_immap();
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static void fs_enet_netpoll(struct net_device *dev)
{
disable_irq(dev->irq);
fs_enet_interrupt(dev->irq, dev, NULL);
enable_irq(dev->irq);
}
#endif
/**************************************************************************************/
module_init(fs_init);

12
drivers/net/fs_enet/mac-fcc.c
View File

@ -1,14 +1,14 @@
/*
* FCC driver for Motorola MPC82xx (PQ2).
*
* Copyright (c) 2003 Intracom S.A.
* Copyright (c) 2003 Intracom S.A.
* by Pantelis Antoniou <panto@intracom.gr>
*
* 2005 (c) MontaVista Software, Inc.
* 2005 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
@ -92,7 +92,7 @@ static inline int fcc_cr_cmd(struct fs_enet_private *fep, u32 mcn, u32 op)
u32 v;
int i;
/* Currently I don't know what feature call will look like. But
/* Currently I don't know what feature call will look like. But
I guess there'd be something like do_cpm_cmd() which will require page & sblock */
v = mk_cr_cmd(fpi->cp_page, fpi->cp_block, mcn, op);
W32(cpmp, cp_cpcr, v | CPM_CR_FLG);
@ -548,7 +548,7 @@ int get_regs_len(struct net_device *dev)
* down. We now issue a restart transmit. Since the
* errors close the BD and update the pointers, the restart
* _should_ pick up without having to reset any of our
* pointers either. Also, To workaround 8260 device erratum
* pointers either. Also, To workaround 8260 device erratum
* CPM37, we must disable and then re-enable the transmitter
* following a Late Collision, Underrun, or Retry Limit error.
*/

30
drivers/net/fs_enet/mac-fec.c
View File

@ -1,14 +1,14 @@
/*
* Freescale Ethernet controllers
*
* Copyright (c) 2005 Intracom S.A.
* Copyright (c) 2005 Intracom S.A.
* by Pantelis Antoniou <panto@intracom.gr>
*
* 2005 (c) MontaVista Software, Inc.
* 2005 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
@ -95,9 +95,9 @@ static int whack_reset(fec_t * fecp)
static int do_pd_setup(struct fs_enet_private *fep)
{
struct platform_device *pdev = to_platform_device(fep->dev);
struct platform_device *pdev = to_platform_device(fep->dev);
struct resource *r;
/* Fill out IRQ field */
fep->interrupt = platform_get_irq_byname(pdev,"interrupt");
if (fep->interrupt < 0)
@ -110,7 +110,7 @@ static int do_pd_setup(struct fs_enet_private *fep)
return -EINVAL;
return 0;
}
#define FEC_NAPI_RX_EVENT_MSK (FEC_ENET_RXF | FEC_ENET_RXB)
@ -141,7 +141,7 @@ static int allocate_bd(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
const struct fs_platform_info *fpi = fep->fpi;
fep->ring_base = dma_alloc_coherent(fep->dev,
(fpi->tx_ring + fpi->rx_ring) *
sizeof(cbd_t), &fep->ring_mem_addr,
@ -280,13 +280,13 @@ static void restart(struct net_device *dev)
FW(fecp, addr_high, addrlo);
/*
* Reset all multicast.
* Reset all multicast.
*/
FW(fecp, hash_table_high, fep->fec.hthi);
FW(fecp, hash_table_low, fep->fec.htlo);
/*
* Set maximum receive buffer size.
* Set maximum receive buffer size.
*/
FW(fecp, r_buff_size, PKT_MAXBLR_SIZE);
FW(fecp, r_hash, PKT_MAXBUF_SIZE);
@ -296,7 +296,7 @@ static void restart(struct net_device *dev)
tx_bd_base_phys = rx_bd_base_phys + sizeof(cbd_t) * fpi->rx_ring;
/*
* Set receive and transmit descriptor base.
* Set receive and transmit descriptor base.
*/
FW(fecp, r_des_start, rx_bd_base_phys);
FW(fecp, x_des_start, tx_bd_base_phys);
@ -304,7 +304,7 @@ static void restart(struct net_device *dev)
fs_init_bds(dev);
/*
* Enable big endian and don't care about SDMA FC.
* Enable big endian and don't care about SDMA FC.
*/
FW(fecp, fun_code, 0x78000000);
@ -366,13 +366,13 @@ static void restart(struct net_device *dev)
}
/*
* Enable interrupts we wish to service.
* Enable interrupts we wish to service.
*/
FW(fecp, imask, FEC_ENET_TXF | FEC_ENET_TXB |
FEC_ENET_RXF | FEC_ENET_RXB);
/*
* And last, enable the transmit and receive processing.
* And last, enable the transmit and receive processing.
*/
FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN);
FW(fecp, r_des_active, 0x01000000);
@ -401,7 +401,7 @@ static void stop(struct net_device *dev)
": %s FEC timeout on graceful transmit stop\n",
dev->name);
/*
* Disable FEC. Let only MII interrupts.
* Disable FEC. Let only MII interrupts.
*/
FW(fecp, imask, 0);
FC(fecp, ecntrl, FEC_ECNTRL_ETHER_EN);

20
drivers/net/fs_enet/mac-scc.c
View File

@ -1,14 +1,14 @@
/*
* Ethernet on Serial Communications Controller (SCC) driver for Motorola MPC8xx and MPC82xx.
*
* Copyright (c) 2003 Intracom S.A.
* Copyright (c) 2003 Intracom S.A.
* by Pantelis Antoniou <panto@intracom.gr>
*
* 2005 (c) MontaVista Software, Inc.
*
* 2005 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
@ -82,7 +82,7 @@
#define SCC_MAX_MULTICAST_ADDRS 64
/*
* Delay to wait for SCC reset command to complete (in us)
* Delay to wait for SCC reset command to complete (in us)
*/
#define SCC_RESET_DELAY 50
#define MAX_CR_CMD_LOOPS 10000
@ -189,7 +189,7 @@ static void cleanup_data(struct net_device *dev)
}
static void set_promiscuous_mode(struct net_device *dev)
{
{
struct fs_enet_private *fep = netdev_priv(dev);
scc_t *sccp = fep->scc.sccp;
@ -323,7 +323,7 @@ static void restart(struct net_device *dev)
W16(ep, sen_iaddr3, 0);
W16(ep, sen_iaddr4, 0);
/* set address
/* set address
*/
mac = dev->dev_addr;
paddrh = ((u16) mac[5] << 8) | mac[4];
@ -345,7 +345,7 @@ static void restart(struct net_device *dev)
W16(sccp, scc_scce, 0xffff);
/* Enable interrupts we wish to service.
/* Enable interrupts we wish to service.
*/
W16(sccp, scc_sccm, SCCE_ENET_TXE | SCCE_ENET_RXF | SCCE_ENET_TXB);
@ -373,7 +373,7 @@ static void restart(struct net_device *dev)
S32(sccp, scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT);
}
static void stop(struct net_device *dev)
static void stop(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
scc_t *sccp = fep->scc.sccp;

10
drivers/net/fs_enet/mii-bitbang.c
View File

@ -1,14 +1,14 @@
/*
* Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
*
* Copyright (c) 2003 Intracom S.A.
* Copyright (c) 2003 Intracom S.A.
* by Pantelis Antoniou <panto@intracom.gr>
*
* 2005 (c) MontaVista Software, Inc.
*
* 2005 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/