Skip to content

L
linux
Commit 95252236 authored by Guo-Fu Tseng's avatar Guo-Fu Tseng Committed by Jeff Garzik
Browse files
Options

jme: JMicron Gigabit Ethernet Driver 

Supporting JMC250, and JMC260.
Signed-off-by: default avatarGuo-Fu Tseng <cooldavid@cooldavid.org>
Acked-and-tested-by: default avatarEthan Hsiao <ethanhsiao@jmicron.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 01f2e4ea
Hide whitespace changes
Inline Side-by-side
Showing with 4237 additions and 0 deletions
MAINTAINERS
View file @ 95252236
......@@ -2326,6 +2326,12 @@ L: video4linux-list@redhat.com
W: http://www.ivtvdriver.org
S: Maintained
JME NETWORK DRIVER
P: Guo-Fu Tseng
M: cooldavid@cooldavid.org
L: netdev@vger.kernel.org
S: Maintained
JOURNALLING FLASH FILE SYSTEM V2 (JFFS2)
P: David Woodhouse
M: dwmw2@infradead.org
......
drivers/net/Kconfig
View file @ 95252236
......@@ -2313,6 +2313,18 @@ config ATL1E
To compile this driver as a module, choose M here. The module
will be called atl1e.
config JME
tristate "JMicron(R) PCI-Express Gigabit Ethernet support"
depends on PCI
select CRC32
select MII
---help---
This driver supports the PCI-Express gigabit ethernet adapters
based on JMicron JMC250 chipset.
To compile this driver as a module, choose M here. The module
will be called jme.
endif # NETDEV_1000
#
......
drivers/net/Makefile
View file @ 95252236
......@@ -20,6 +20,7 @@ obj-$(CONFIG_ATL1E) += atl1e/
obj-$(CONFIG_GIANFAR) += gianfar_driver.o
obj-$(CONFIG_TEHUTI) += tehuti.o
obj-$(CONFIG_ENIC) += enic/
obj-$(CONFIG_JME) += jme.o
gianfar_driver-objs := gianfar.o \
gianfar_ethtool.o \
......
drivers/net/jme.c 0 → 100644
View file @ 95252236
/*
* JMicron JMC2x0 series PCIe Ethernet Linux Device Driver
*
* Copyright 2008 JMicron Technology Corporation
* http://www.jmicron.com/
*
* Author: Guo-Fu Tseng <cooldavid@cooldavid.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <linux/version.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/crc32.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/tcp.h>
#include <linux/udp.h>
#include <linux/if_vlan.h>
#include "jme.h"
static int force_pseudohp = -1;
static int no_pseudohp = -1;
static int no_extplug = -1;
module_param(force_pseudohp, int, 0);
MODULE_PARM_DESC(force_pseudohp,
"Enable pseudo hot-plug feature manually by driver instead of BIOS.");
module_param(no_pseudohp, int, 0);
MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
module_param(no_extplug, int, 0);
MODULE_PARM_DESC(no_extplug,
"Do not use external plug signal for pseudo hot-plug.");
static int
jme_mdio_read(struct net_device *netdev, int phy, int reg)
{
struct jme_adapter *jme = netdev_priv(netdev);
int i, val, again = (reg == MII_BMSR) ? 1 : 0;
read_again:
jwrite32(jme, JME_SMI, SMI_OP_REQ |
smi_phy_addr(phy) |
smi_reg_addr(reg));
wmb();
for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
udelay(20);
val = jread32(jme, JME_SMI);
if ((val & SMI_OP_REQ) == 0)
break;
}
if (i == 0) {
jeprintk(jme->pdev, "phy(%d) read timeout : %d\n", phy, reg);
return 0;
}
if (again--)
goto read_again;
return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
}
static void
jme_mdio_write(struct net_device *netdev,
int phy, int reg, int val)
{
struct jme_adapter *jme = netdev_priv(netdev);
int i;
jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
smi_phy_addr(phy) | smi_reg_addr(reg));
wmb();
for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
udelay(20);
if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
break;
}
if (i == 0)
jeprintk(jme->pdev, "phy(%d) write timeout : %d\n", phy, reg);
return;
}
static inline void
jme_reset_phy_processor(struct jme_adapter *jme)
{
u32 val;
jme_mdio_write(jme->dev,
jme->mii_if.phy_id,
MII_ADVERTISE, ADVERTISE_ALL |
ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
jme_mdio_write(jme->dev,
jme->mii_if.phy_id,
MII_CTRL1000,
ADVERTISE_1000FULL | ADVERTISE_1000HALF);
val = jme_mdio_read(jme->dev,
jme->mii_if.phy_id,
MII_BMCR);
jme_mdio_write(jme->dev,
jme->mii_if.phy_id,
MII_BMCR, val | BMCR_RESET);
return;
}
static void
jme_setup_wakeup_frame(struct jme_adapter *jme,
u32 *mask, u32 crc, int fnr)
{
int i;
/*
* Setup CRC pattern
*/
jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
wmb();
jwrite32(jme, JME_WFODP, crc);
wmb();
/*
* Setup Mask
*/
for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
jwrite32(jme, JME_WFOI,
((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
(fnr & WFOI_FRAME_SEL));
wmb();
jwrite32(jme, JME_WFODP, mask[i]);
wmb();
}
}
static inline void
jme_reset_mac_processor(struct jme_adapter *jme)
{
u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
u32 crc = 0xCDCDCDCD;
u32 gpreg0;
int i;
jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST);
udelay(2);
jwrite32(jme, JME_GHC, jme->reg_ghc);
jwrite32(jme, JME_RXDBA_LO, 0x00000000);
jwrite32(jme, JME_RXDBA_HI, 0x00000000);
jwrite32(jme, JME_RXQDC, 0x00000000);
jwrite32(jme, JME_RXNDA, 0x00000000);
jwrite32(jme, JME_TXDBA_LO, 0x00000000);
jwrite32(jme, JME_TXDBA_HI, 0x00000000);
jwrite32(jme, JME_TXQDC, 0x00000000);
jwrite32(jme, JME_TXNDA, 0x00000000);
jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
jme_setup_wakeup_frame(jme, mask, crc, i);
if (jme->fpgaver)
gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
else
gpreg0 = GPREG0_DEFAULT;
jwrite32(jme, JME_GPREG0, gpreg0);
jwrite32(jme, JME_GPREG1, 0);
}
static inline void
jme_reset_ghc_speed(struct jme_adapter *jme)
{
jme->reg_ghc &= ~(GHC_SPEED_1000M | GHC_DPX);
jwrite32(jme, JME_GHC, jme->reg_ghc);
}
static inline void
jme_clear_pm(struct jme_adapter *jme)
{
jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
pci_set_power_state(jme->pdev, PCI_D0);
pci_enable_wake(jme->pdev, PCI_D0, false);
}
static int
jme_reload_eeprom(struct jme_adapter *jme)
{
u32 val;
int i;
val = jread32(jme, JME_SMBCSR);
if (val & SMBCSR_EEPROMD) {
val |= SMBCSR_CNACK;
jwrite32(jme, JME_SMBCSR, val);
val |= SMBCSR_RELOAD;
jwrite32(jme, JME_SMBCSR, val);
mdelay(12);
for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
mdelay(1);
if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
break;
}
if (i == 0) {
jeprintk(jme->pdev, "eeprom reload timeout\n");
return -EIO;
}
}
return 0;
}
static void
jme_load_macaddr(struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
unsigned char macaddr[6];
u32 val;
spin_lock_bh(&jme->macaddr_lock);
val = jread32(jme, JME_RXUMA_LO);
macaddr[0] = (val >> 0) & 0xFF;
macaddr[1] = (val >> 8) & 0xFF;
macaddr[2] = (val >> 16) & 0xFF;
macaddr[3] = (val >> 24) & 0xFF;
val = jread32(jme, JME_RXUMA_HI);
macaddr[4] = (val >> 0) & 0xFF;
macaddr[5] = (val >> 8) & 0xFF;
memcpy(netdev->dev_addr, macaddr, 6);
spin_unlock_bh(&jme->macaddr_lock);
}
static inline void
jme_set_rx_pcc(struct jme_adapter *jme, int p)
{
switch (p) {
case PCC_OFF:
jwrite32(jme, JME_PCCRX0,
((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
break;
case PCC_P1:
jwrite32(jme, JME_PCCRX0,
((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
break;
case PCC_P2:
jwrite32(jme, JME_PCCRX0,
((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
break;
case PCC_P3:
jwrite32(jme, JME_PCCRX0,
((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
break;
default:
break;
}
wmb();
if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
msg_rx_status(jme, "Switched to PCC_P%d\n", p);
}
static void
jme_start_irq(struct jme_adapter *jme)
{
register struct dynpcc_info *dpi = &(jme->dpi);
jme_set_rx_pcc(jme, PCC_P1);
dpi->cur = PCC_P1;
dpi->attempt = PCC_P1;
dpi->cnt = 0;
jwrite32(jme, JME_PCCTX,
((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
PCCTXQ0_EN
);
/*
* Enable Interrupts
*/
jwrite32(jme, JME_IENS, INTR_ENABLE);
}
static inline void
jme_stop_irq(struct jme_adapter *jme)
{
/*
* Disable Interrupts
*/
jwrite32f(jme, JME_IENC, INTR_ENABLE);
}
static inline void
jme_enable_shadow(struct jme_adapter *jme)
{
jwrite32(jme,
JME_SHBA_LO,
((u32)jme->shadow_dma & ~((u32)0x1F)) | SHBA_POSTEN);
}
static inline void
jme_disable_shadow(struct jme_adapter *jme)
{
jwrite32(jme, JME_SHBA_LO, 0x0);
}
static u32
jme_linkstat_from_phy(struct jme_adapter *jme)
{
u32 phylink, bmsr;
phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
if (bmsr & BMSR_ANCOMP)
phylink |= PHY_LINK_AUTONEG_COMPLETE;
return phylink;
}
static inline void
jme_set_phyfifoa(struct jme_adapter *jme)
{
jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
}
static inline void
jme_set_phyfifob(struct jme_adapter *jme)
{
jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
}
static int
jme_check_link(struct net_device *netdev, int testonly)
{
struct jme_adapter *jme = netdev_priv(netdev);
u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr;
char linkmsg[64];
int rc = 0;
linkmsg[0] = '\0';
if (jme->fpgaver)
phylink = jme_linkstat_from_phy(jme);
else
phylink = jread32(jme, JME_PHY_LINK);
if (phylink & PHY_LINK_UP) {
if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
/*
* If we did not enable AN
* Speed/Duplex Info should be obtained from SMI
*/
phylink = PHY_LINK_UP;
bmcr = jme_mdio_read(jme->dev,
jme->mii_if.phy_id,
MII_BMCR);
phylink |= ((bmcr & BMCR_SPEED1000) &&
(bmcr & BMCR_SPEED100) == 0) ?
PHY_LINK_SPEED_1000M :
(bmcr & BMCR_SPEED100) ?
PHY_LINK_SPEED_100M :
PHY_LINK_SPEED_10M;
phylink |= (bmcr & BMCR_FULLDPLX) ?
PHY_LINK_DUPLEX : 0;
strcat(linkmsg, "Forced: ");
} else {
/*
* Keep polling for speed/duplex resolve complete
*/
while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
--cnt) {
udelay(1);
if (jme->fpgaver)
phylink = jme_linkstat_from_phy(jme);
else
phylink = jread32(jme, JME_PHY_LINK);
}
if (!cnt)
jeprintk(jme->pdev,
"Waiting speed resolve timeout.\n");
strcat(linkmsg, "ANed: ");
}
if (jme->phylink == phylink) {
rc = 1;
goto out;
}
if (testonly)
goto out;
jme->phylink = phylink;
ghc = jme->reg_ghc & ~(GHC_SPEED_10M |
GHC_SPEED_100M |
GHC_SPEED_1000M |
GHC_DPX);
switch (phylink & PHY_LINK_SPEED_MASK) {
case PHY_LINK_SPEED_10M:
ghc |= GHC_SPEED_10M;
strcat(linkmsg, "10 Mbps, ");
if (is_buggy250(jme->pdev->device, jme->chiprev))
jme_set_phyfifoa(jme);
break;
case PHY_LINK_SPEED_100M:
ghc |= GHC_SPEED_100M;
strcat(linkmsg, "100 Mbps, ");
if (is_buggy250(jme->pdev->device, jme->chiprev))
jme_set_phyfifob(jme);
break;
case PHY_LINK_SPEED_1000M:
ghc |= GHC_SPEED_1000M;
strcat(linkmsg, "1000 Mbps, ");
if (is_buggy250(jme->pdev->device, jme->chiprev))
jme_set_phyfifoa(jme);
break;
default:
break;
}
ghc |= (phylink & PHY_LINK_DUPLEX) ? GHC_DPX : 0;
strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
"Full-Duplex, " :
"Half-Duplex, ");
if (phylink & PHY_LINK_MDI_STAT)
strcat(linkmsg, "MDI-X");
else
strcat(linkmsg, "MDI");
if (phylink & PHY_LINK_DUPLEX) {
jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
} else {
jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
TXMCS_BACKOFF |
TXMCS_CARRIERSENSE |
TXMCS_COLLISION);
jwrite32(jme, JME_TXTRHD, TXTRHD_TXPEN |
((0x2000 << TXTRHD_TXP_SHIFT) & TXTRHD_TXP) |
TXTRHD_TXREN |
((8 << TXTRHD_TXRL_SHIFT) & TXTRHD_TXRL));
}
jme->reg_ghc = ghc;
jwrite32(jme, JME_GHC, ghc);
msg_link(jme, "Link is up at %s.\n", linkmsg);
netif_carrier_on(netdev);
} else {
if (testonly)
goto out;
msg_link(jme, "Link is down.\n");
jme->phylink = 0;
netif_carrier_off(netdev);
}
out:
return rc;
}
static int
jme_setup_tx_resources(struct jme_adapter *jme)
{
struct jme_ring *txring = &(jme->txring[0]);
txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
TX_RING_ALLOC_SIZE(jme->tx_ring_size),
&(txring->dmaalloc),
GFP_ATOMIC);
if (!txring->alloc) {
txring->desc = NULL;
txring->dmaalloc = 0;
txring->dma = 0;
return -ENOMEM;
}
/*
* 16 Bytes align
*/
txring->desc = (void *)ALIGN((unsigned long)(txring->alloc),
RING_DESC_ALIGN);
txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
txring->next_to_use = 0;
atomic_set(&txring->next_to_clean, 0);
atomic_set(&txring->nr_free, jme->tx_ring_size);
/*
* Initialize Transmit Descriptors
*/
memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
memset(txring->bufinf, 0,
sizeof(struct jme_buffer_info) * jme->tx_ring_size);
return 0;
}
static void
jme_free_tx_resources(struct jme_adapter *jme)
{
int i;
struct jme_ring *txring = &(jme->txring[0]);
struct jme_buffer_info *txbi = txring->bufinf;
if (txring->alloc) {
for (i = 0 ; i < jme->tx_ring_size ; ++i) {
txbi = txring->bufinf + i;
if (txbi->skb) {
dev_kfree_skb(txbi->skb);
txbi->skb = NULL;
}
txbi->mapping = 0;
txbi->len = 0;
txbi->nr_desc = 0;
txbi->start_xmit = 0;
}
dma_free_coherent(&(jme->pdev->dev),
TX_RING_ALLOC_SIZE(jme->tx_ring_size),
txring->alloc,
txring->dmaalloc);
txring->alloc = NULL;
txring->desc = NULL;
txring->dmaalloc = 0;
txring->dma = 0;
}
txring->next_to_use = 0;
atomic_set(&txring->next_to_clean, 0);
atomic_set(&txring->nr_free, 0);
}
static inline void
jme_enable_tx_engine(struct jme_adapter *jme)
{
/*
* Select Queue 0
*/
jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
wmb();
/*
* Setup TX Queue 0 DMA Bass Address
*/
jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
/*
* Setup TX Descptor Count
*/
jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
/*
* Enable TX Engine
*/
wmb();
jwrite32(jme, JME_TXCS, jme->reg_txcs |
TXCS_SELECT_QUEUE0 |
TXCS_ENABLE);
}
static inline void
jme_restart_tx_engine(struct jme_adapter *jme)
{
/*
* Restart TX Engine
*/
jwrite32(jme, JME_TXCS, jme->reg_txcs |
TXCS_SELECT_QUEUE0 |
TXCS_ENABLE);
}
static inline void
jme_disable_tx_engine(struct jme_adapter *jme)
{
int i;
u32 val;
/*
* Disable TX Engine
*/
jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
wmb();
val = jread32(jme, JME_TXCS);
for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
mdelay(1);
val = jread32(jme, JME_TXCS);
rmb();
}
if (!i)
jeprintk(jme->pdev, "Disable TX engine timeout.\n");
}
static void
jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
{
struct jme_ring *rxring = jme->rxring;
register struct rxdesc *rxdesc = rxring->desc;
struct jme_buffer_info *rxbi = rxring->bufinf;
rxdesc += i;
rxbi += i;
rxdesc->dw[0] = 0;
rxdesc->dw[1] = 0;
rxdesc->desc1.bufaddrh = cpu_to_le32((__u64)rxbi->mapping >> 32);
rxdesc->desc1.bufaddrl = cpu_to_le32(
(__u64)rxbi->mapping & 0xFFFFFFFFUL);
rxdesc->desc1.datalen = cpu_to_le16(rxbi->len);
if (jme->dev->features & NETIF_F_HIGHDMA)
rxdesc->desc1.flags = RXFLAG_64BIT;
wmb();
rxdesc->desc1.flags |= RXFLAG_OWN | RXFLAG_INT;
}
static int
jme_make_new_rx_buf(struct jme_adapter *jme, int i)
{
struct jme_ring *rxring = &(jme->rxring[0]);
struct jme_buffer_info *rxbi = rxring->bufinf + i;
struct sk_buff *skb;
skb = netdev_alloc_skb(jme->dev,
jme->dev->mtu + RX_EXTRA_LEN);
if (unlikely(!skb))
return -ENOMEM;
rxbi->skb = skb;
rxbi->len = skb_tailroom(skb);
rxbi->mapping = pci_map_page(jme->pdev,
virt_to_page(skb->data),
offset_in_page(skb->data),
rxbi->len,
PCI_DMA_FROMDEVICE);
return 0;
}
static void
jme_free_rx_buf(struct jme_adapter *jme, int i)
{
struct jme_ring *rxring = &(jme->rxring[0]);
struct jme_buffer_info *rxbi = rxring->bufinf;
rxbi += i;
if (rxbi->skb) {
pci_unmap_page(jme->pdev,
rxbi->mapping,
rxbi->len,
PCI_DMA_FROMDEVICE);
dev_kfree_skb(rxbi->skb);
rxbi->skb = NULL;
rxbi->mapping = 0;
rxbi->len = 0;
}
}
static void
jme_free_rx_resources(struct jme_adapter *jme)
{
int i;
struct jme_ring *rxring = &(jme->rxring[0]);
if (rxring->alloc) {
for (i = 0 ; i < jme->rx_ring_size ; ++i)
jme_free_rx_buf(jme, i);
dma_free_coherent(&(jme->pdev->dev),
RX_RING_ALLOC_SIZE(jme->rx_ring_size),
rxring->alloc,
rxring->dmaalloc);
rxring->alloc = NULL;
rxring->desc = NULL;
rxring->dmaalloc = 0;
rxring->dma = 0;
}
rxring->next_to_use = 0;
atomic_set(&rxring->next_to_clean, 0);
}
static int
jme_setup_rx_resources(struct jme_adapter *jme)
{
int i;
struct jme_ring *rxring = &(jme->rxring[0]);
rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
RX_RING_ALLOC_SIZE(jme->rx_ring_size),
&(rxring->dmaalloc),
GFP_ATOMIC);
if (!rxring->alloc) {
rxring->desc = NULL;
rxring->dmaalloc = 0;
rxring->dma = 0;
return -ENOMEM;
}
/*
* 16 Bytes align
*/
rxring->desc = (void *)ALIGN((unsigned long)(rxring->alloc),
RING_DESC_ALIGN);
rxring->dma = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
rxring->next_to_use = 0;
atomic_set(&rxring->next_to_clean, 0);
/*
* Initiallize Receive Descriptors
*/
for (i = 0 ; i < jme->rx_ring_size ; ++i) {
if (unlikely(jme_make_new_rx_buf(jme, i))) {
jme_free_rx_resources(jme);
return -ENOMEM;
}
jme_set_clean_rxdesc(jme, i);
}
return 0;
}
static inline void
jme_enable_rx_engine(struct jme_adapter *jme)
{
/*
* Select Queue 0
*/
jwrite32(jme, JME_RXCS, jme->reg_rxcs |
RXCS_QUEUESEL_Q0);
wmb();
/*
* Setup RX DMA Bass Address
*/
jwrite32(jme, JME_RXDBA_LO, (__u64)jme->rxring[0].dma & 0xFFFFFFFFUL);
jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
jwrite32(jme, JME_RXNDA, (__u64)jme->rxring[0].dma & 0xFFFFFFFFUL);
/*
* Setup RX Descriptor Count
*/
jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
/*
* Setup Unicast Filter
*/
jme_set_multi(jme->dev);
/*
* Enable RX Engine
*/
wmb();
jwrite32(jme, JME_RXCS, jme->reg_rxcs |
RXCS_QUEUESEL_Q0 |
RXCS_ENABLE |
RXCS_QST);
}
static inline void
jme_restart_rx_engine(struct jme_adapter *jme)
{
/*
* Start RX Engine
*/
jwrite32(jme, JME_RXCS, jme->reg_rxcs |
RXCS_QUEUESEL_Q0 |
RXCS_ENABLE |
RXCS_QST);
}
static inline void
jme_disable_rx_engine(struct jme_adapter *jme)
{
int i;
u32 val;
/*
* Disable RX Engine
*/
jwrite32(jme, JME_RXCS, jme->reg_rxcs);
wmb();
val = jread32(jme, JME_RXCS);
for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
mdelay(1);
val = jread32(jme, JME_RXCS);
rmb();
}
if (!i)
jeprintk(jme->pdev, "Disable RX engine timeout.\n");
}
static int
jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
{
if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
return false;
if (unlikely(!(flags & RXWBFLAG_MF) &&
(flags & RXWBFLAG_TCPON) && !(flags & RXWBFLAG_TCPCS))) {
msg_rx_err(jme, "TCP Checksum error.\n");
goto out_sumerr;
}
if (unlikely(!(flags & RXWBFLAG_MF) &&
(flags & RXWBFLAG_UDPON) && !(flags & RXWBFLAG_UDPCS))) {
msg_rx_err(jme, "UDP Checksum error.\n");
goto out_sumerr;
}
if (unlikely((flags & RXWBFLAG_IPV4) && !(flags & RXWBFLAG_IPCS))) {
msg_rx_err(jme, "IPv4 Checksum error.\n");
goto out_sumerr;
}
return true;
out_sumerr:
return false;
}
static void
jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
{
struct jme_ring *rxring = &(jme->rxring[0]);
struct rxdesc *rxdesc = rxring->desc;
struct jme_buffer_info *rxbi = rxring->bufinf;
struct sk_buff *skb;
int framesize;
rxdesc += idx;
rxbi += idx;
skb = rxbi->skb;
pci_dma_sync_single_for_cpu(jme->pdev,
rxbi->mapping,
rxbi->len,
PCI_DMA_FROMDEVICE);
if (unlikely(jme_make_new_rx_buf(jme, idx))) {
pci_dma_sync_single_for_device(jme->pdev,
rxbi->mapping,
rxbi->len,
PCI_DMA_FROMDEVICE);
++(NET_STAT(jme).rx_dropped);
} else {
framesize = le16_to_cpu(rxdesc->descwb.framesize)
- RX_PREPAD_SIZE;
skb_reserve(skb, RX_PREPAD_SIZE);
skb_put(skb, framesize);
skb->protocol = eth_type_trans(skb, jme->dev);
if (jme_rxsum_ok(jme, rxdesc->descwb.flags))
skb->ip_summed = CHECKSUM_UNNECESSARY;
else
skb->ip_summed = CHECKSUM_NONE;
if (rxdesc->descwb.flags & RXWBFLAG_TAGON) {
if (jme->vlgrp) {
jme->jme_vlan_rx(skb, jme->vlgrp,
le32_to_cpu(rxdesc->descwb.vlan));
NET_STAT(jme).rx_bytes += 4;
}
} else {
jme->jme_rx(skb);
}
if ((le16_to_cpu(rxdesc->descwb.flags) & RXWBFLAG_DEST) ==
RXWBFLAG_DEST_MUL)
++(NET_STAT(jme).multicast);
jme->dev->last_rx = jiffies;
NET_STAT(jme).rx_bytes += framesize;
++(NET_STAT(jme).rx_packets);
}
jme_set_clean_rxdesc(jme, idx);
}
static int
jme_process_receive(struct jme_adapter *jme, int limit)
{
struct jme_ring *rxring = &(jme->rxring[0]);
struct rxdesc *rxdesc = rxring->desc;
int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
goto out_inc;
if (unlikely(atomic_read(&jme->link_changing) != 1))
goto out_inc;
if (unlikely(!netif_carrier_ok(jme->dev)))
goto out_inc;
i = atomic_read(&rxring->next_to_clean);
while (limit-- > 0) {
rxdesc = rxring->desc;
rxdesc += i;
if ((rxdesc->descwb.flags & RXWBFLAG_OWN) ||
!(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
goto out;
desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
if (unlikely(desccnt > 1 ||
rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
++(NET_STAT(jme).rx_crc_errors);
else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
++(NET_STAT(jme).rx_fifo_errors);
else
++(NET_STAT(jme).rx_errors);
if (desccnt > 1)
limit -= desccnt - 1;
for (j = i, ccnt = desccnt ; ccnt-- ; ) {
jme_set_clean_rxdesc(jme, j);
j = (j + 1) & (mask);
}
} else {
jme_alloc_and_feed_skb(jme, i);
}
i = (i + desccnt) & (mask);
}
out:
atomic_set(&rxring->next_to_clean, i);
out_inc:
atomic_inc(&jme->rx_cleaning);
return limit > 0 ? limit : 0;
}
static void
jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
{
if (likely(atmp == dpi->cur)) {
dpi->cnt = 0;
return;
}
if (dpi->attempt == atmp) {
++(dpi->cnt);
} else {
dpi->attempt = atmp;
dpi->cnt = 0;
}
}
static void
jme_dynamic_pcc(struct jme_adapter *jme)
{
register struct dynpcc_info *dpi = &(jme->dpi);
if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
jme_attempt_pcc(dpi, PCC_P3);
else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD
|| dpi->intr_cnt > PCC_INTR_THRESHOLD)
jme_attempt_pcc(dpi, PCC_P2);
else
jme_attempt_pcc(dpi, PCC_P1);
if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
if (dpi->attempt < dpi->cur)
tasklet_schedule(&jme->rxclean_task);
jme_set_rx_pcc(jme, dpi->attempt);
dpi->cur = dpi->attempt;
dpi->cnt = 0;
}
}
static void
jme_start_pcc_timer(struct jme_adapter *jme)
{
struct dynpcc_info *dpi = &(jme->dpi);
dpi->last_bytes = NET_STAT(jme).rx_bytes;
dpi->last_pkts = NET_STAT(jme).rx_packets;
dpi->intr_cnt = 0;
jwrite32(jme, JME_TMCSR,
TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
}
static inline void
jme_stop_pcc_timer(struct jme_adapter *jme)
{
jwrite32(jme, JME_TMCSR, 0);
}
static void
jme_shutdown_nic(struct jme_adapter *jme)
{
u32 phylink;
phylink = jme_linkstat_from_phy(jme);
if (!(phylink & PHY_LINK_UP)) {
/*
* Disable all interrupt before issue timer
*/
jme_stop_irq(jme);
jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
}
}
static void
jme_pcc_tasklet(unsigned long arg)
{
struct jme_adapter *jme = (struct jme_adapter *)arg;
struct net_device *netdev = jme->dev;
if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
jme_shutdown_nic(jme);
return;
}
if (unlikely(!netif_carrier_ok(netdev) ||
(atomic_read(&jme->link_changing) != 1)
)) {
jme_stop_pcc_timer(jme);
return;
}
if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
jme_dynamic_pcc(jme);
jme_start_pcc_timer(jme);
}
static inline void
jme_polling_mode(struct jme_adapter *jme)
{
jme_set_rx_pcc(jme, PCC_OFF);
}
static inline void
jme_interrupt_mode(struct jme_adapter *jme)
{
jme_set_rx_pcc(jme, PCC_P1);
}
static inline int
jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
{
u32 apmc;
apmc = jread32(jme, JME_APMC);
return apmc & JME_APMC_PSEUDO_HP_EN;
}
static void
jme_start_shutdown_timer(struct jme_adapter *jme)
{
u32 apmc;
apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
apmc &= ~JME_APMC_EPIEN_CTRL;
if (!no_extplug) {
jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
wmb();
}
jwrite32f(jme, JME_APMC, apmc);
jwrite32f(jme, JME_TIMER2, 0);
set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
jwrite32(jme, JME_TMCSR,
TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
}
static void
jme_stop_shutdown_timer(struct jme_adapter *jme)
{
u32 apmc;
jwrite32f(jme, JME_TMCSR, 0);
jwrite32f(jme, JME_TIMER2, 0);
clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
apmc = jread32(jme, JME_APMC);
apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
wmb();
jwrite32f(jme, JME_APMC, apmc);
}
static void
jme_link_change_tasklet(unsigned long arg)
{
struct jme_adapter *jme = (struct jme_adapter *)arg;
struct net_device *netdev = jme->dev;
int rc;
while (!atomic_dec_and_test(&jme->link_changing)) {
atomic_inc(&jme->link_changing);
msg_intr(jme, "Get link change lock failed.\n");
while (atomic_read(&jme->link_changing) != 1)
msg_intr(jme, "Waiting link change lock.\n");
}
if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
goto out;
jme->old_mtu = netdev->mtu;
netif_stop_queue(netdev);
if (jme_pseudo_hotplug_enabled(jme))
jme_stop_shutdown_timer(jme);
jme_stop_pcc_timer(jme);
tasklet_disable(&jme->txclean_task);
tasklet_disable(&jme->rxclean_task);
tasklet_disable(&jme->rxempty_task);
if (netif_carrier_ok(netdev)) {
jme_reset_ghc_speed(jme);
jme_disable_rx_engine(jme);
jme_disable_tx_engine(jme);
jme_reset_mac_processor(jme);
jme_free_rx_resources(jme);
jme_free_tx_resources(jme);
if (test_bit(JME_FLAG_POLL, &jme->flags))
jme_polling_mode(jme);
netif_carrier_off(netdev);
}
jme_check_link(netdev, 0);
if (netif_carrier_ok(netdev)) {
rc = jme_setup_rx_resources(jme);
if (rc) {
jeprintk(jme->pdev, "Allocating resources for RX error"
", Device STOPPED!\n");
goto out_enable_tasklet;
}
rc = jme_setup_tx_resources(jme);
if (rc) {
jeprintk(jme->pdev, "Allocating resources for TX error"
", Device STOPPED!\n");
goto err_out_free_rx_resources;
}
jme_enable_rx_engine(jme);
jme_enable_tx_engine(jme);
netif_start_queue(netdev);
if (test_bit(JME_FLAG_POLL, &jme->flags))
jme_interrupt_mode(jme);
jme_start_pcc_timer(jme);
} else if (jme_pseudo_hotplug_enabled(jme)) {
jme_start_shutdown_timer(jme);
}
goto out_enable_tasklet;
err_out_free_rx_resources:
jme_free_rx_resources(jme);
out_enable_tasklet:
tasklet_enable(&jme->txclean_task);
tasklet_hi_enable(&jme->rxclean_task);
tasklet_hi_enable(&jme->rxempty_task);
out:
atomic_inc(&jme->link_changing);
}
static void
jme_rx_clean_tasklet(unsigned long arg)
{
struct jme_adapter *jme = (struct jme_adapter *)arg;
struct dynpcc_info *dpi = &(jme->dpi);
jme_process_receive(jme, jme->rx_ring_size);
++(dpi->intr_cnt);
}
static int
jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
{
struct jme_adapter *jme = jme_napi_priv(holder);
struct net_device *netdev = jme->dev;
int rest;
rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
while (atomic_read(&jme->rx_empty) > 0) {
atomic_dec(&jme->rx_empty);
++(NET_STAT(jme).rx_dropped);
jme_restart_rx_engine(jme);
}
atomic_inc(&jme->rx_empty);
if (rest) {
JME_RX_COMPLETE(netdev, holder);
jme_interrupt_mode(jme);
}
JME_NAPI_WEIGHT_SET(budget, rest);
return JME_NAPI_WEIGHT_VAL(budget) - rest;
}
static void
jme_rx_empty_tasklet(unsigned long arg)
{
struct jme_adapter *jme = (struct jme_adapter *)arg;
if (unlikely(atomic_read(&jme->link_changing) != 1))
return;
if (unlikely(!netif_carrier_ok(jme->dev)))
return;
msg_rx_status(jme, "RX Queue Full!\n");
jme_rx_clean_tasklet(arg);
while (atomic_read(&jme->rx_empty) > 0) {
atomic_dec(&jme->rx_empty);
++(NET_STAT(jme).rx_dropped);
jme_restart_rx_engine(jme);
}
atomic_inc(&jme->rx_empty);
}
static void
jme_wake_queue_if_stopped(struct jme_adapter *jme)
{
struct jme_ring *txring = jme->txring;
smp_wmb();
if (unlikely(netif_queue_stopped(jme->dev) &&
atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
msg_tx_done(jme, "TX Queue Waked.\n");
netif_wake_queue(jme->dev);
}
}
static void
jme_tx_clean_tasklet(unsigned long arg)
{
struct jme_adapter *jme = (struct jme_adapter *)arg;
struct jme_ring *txring = &(jme->txring[0]);
struct txdesc *txdesc = txring->desc;
struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
int i, j, cnt = 0, max, err, mask;
tx_dbg(jme, "Into txclean.\n");
if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
goto out;
if (unlikely(atomic_read(&jme->link_changing) != 1))
goto out;
if (unlikely(!netif_carrier_ok(jme->dev)))
goto out;
max = jme->tx_ring_size - atomic_read(&txring->nr_free);
mask = jme->tx_ring_mask;
for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
ctxbi = txbi + i;
if (likely(ctxbi->skb &&
!(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
tx_dbg(jme, "txclean: %d+%d@%lu\n",
i, ctxbi->nr_desc, jiffies);
err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
ttxbi = txbi + ((i + j) & (mask));
txdesc[(i + j) & (mask)].dw[0] = 0;
pci_unmap_page(jme->pdev,
ttxbi->mapping,
ttxbi->len,
PCI_DMA_TODEVICE);
ttxbi->mapping = 0;
ttxbi->len = 0;
}
dev_kfree_skb(ctxbi->skb);
cnt += ctxbi->nr_desc;
if (unlikely(err)) {
++(NET_STAT(jme).tx_carrier_errors);
} else {
++(NET_STAT(jme).tx_packets);
NET_STAT(jme).tx_bytes += ctxbi->len;
}
ctxbi->skb = NULL;
ctxbi->len = 0;
ctxbi->start_xmit = 0;
} else {
break;
}
i = (i + ctxbi->nr_desc) & mask;
ctxbi->nr_desc = 0;
}
tx_dbg(jme, "txclean: done %d@%lu.\n", i, jiffies);
atomic_set(&txring->next_to_clean, i);
atomic_add(cnt, &txring->nr_free);
jme_wake_queue_if_stopped(jme);
out:
atomic_inc(&jme->tx_cleaning);
}
static void
jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
{
/*
* Disable interrupt
*/
jwrite32f(jme, JME_IENC, INTR_ENABLE);
if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
/*
* Link change event is critical
* all other events are ignored
*/
jwrite32(jme, JME_IEVE, intrstat);
tasklet_schedule(&jme->linkch_task);
goto out_reenable;
}
if (intrstat & INTR_TMINTR) {
jwrite32(jme, JME_IEVE, INTR_TMINTR);
tasklet_schedule(&jme->pcc_task);
}
if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
tasklet_schedule(&jme->txclean_task);
}
if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
INTR_PCCRX0 |
INTR_RX0EMP)) |
INTR_RX0);
}
if (test_bit(JME_FLAG_POLL, &jme->flags)) {
if (intrstat & INTR_RX0EMP)
atomic_inc(&jme->rx_empty);
if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
if (likely(JME_RX_SCHEDULE_PREP(jme))) {
jme_polling_mode(jme);
JME_RX_SCHEDULE(jme);
}
}
} else {
if (intrstat & INTR_RX0EMP) {
atomic_inc(&jme->rx_empty);
tasklet_hi_schedule(&jme->rxempty_task);
} else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
tasklet_hi_schedule(&jme->rxclean_task);
}
}
out_reenable:
/*
* Re-enable interrupt
*/
jwrite32f(jme, JME_IENS, INTR_ENABLE);
}
static irqreturn_t
jme_intr(int irq, void *dev_id)
{
struct net_device *netdev = dev_id;
struct jme_adapter *jme = netdev_priv(netdev);
u32 intrstat;
intrstat = jread32(jme, JME_IEVE);
/*
* Check if it's really an interrupt for us
*/
if (unlikely(intrstat == 0))
return IRQ_NONE;
/*
* Check if the device still exist
*/
if (unlikely(intrstat == ~((typeof(intrstat))0)))
return IRQ_NONE;
jme_intr_msi(jme, intrstat);
return IRQ_HANDLED;
}
static irqreturn_t
jme_msi(int irq, void *dev_id)
{
struct net_device *netdev = dev_id;
struct jme_adapter *jme = netdev_priv(netdev);
u32 intrstat;
pci_dma_sync_single_for_cpu(jme->pdev,
jme->shadow_dma,
sizeof(u32) * SHADOW_REG_NR,
PCI_DMA_FROMDEVICE);
intrstat = jme->shadow_regs[SHADOW_IEVE];
jme->shadow_regs[SHADOW_IEVE] = 0;
jme_intr_msi(jme, intrstat);
return IRQ_HANDLED;
}
static void
jme_reset_link(struct jme_adapter *jme)
{
jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
}
static void
jme_restart_an(struct jme_adapter *jme)
{
u32 bmcr;
spin_lock_bh(&jme->phy_lock);
bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
spin_unlock_bh(&jme->phy_lock);
}
static int
jme_request_irq(struct jme_adapter *jme)
{
int rc;
struct net_device *netdev = jme->dev;
irq_handler_t handler = jme_intr;
int irq_flags = IRQF_SHARED;
if (!pci_enable_msi(jme->pdev)) {
set_bit(JME_FLAG_MSI, &jme->flags);
handler = jme_msi;
irq_flags = 0;
}
rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
netdev);
if (rc) {
jeprintk(jme->pdev,
"Unable to request %s interrupt (return: %d)\n",
test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
rc);
if (test_bit(JME_FLAG_MSI, &jme->flags)) {
pci_disable_msi(jme->pdev);
clear_bit(JME_FLAG_MSI, &jme->flags);
}
} else {
netdev->irq = jme->pdev->irq;
}
return rc;
}
static void
jme_free_irq(struct jme_adapter *jme)
{
free_irq(jme->pdev->irq, jme->dev);
if (test_bit(JME_FLAG_MSI, &jme->flags)) {
pci_disable_msi(jme->pdev);
clear_bit(JME_FLAG_MSI, &jme->flags);
jme->dev->irq = jme->pdev->irq;
}
}
static int
jme_open(struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
int rc;
jme_clear_pm(jme);
JME_NAPI_ENABLE(jme);
tasklet_enable(&jme->txclean_task);
tasklet_hi_enable(&jme->rxclean_task);
tasklet_hi_enable(&jme->rxempty_task);
rc = jme_request_irq(jme);
if (rc)
goto err_out;
jme_enable_shadow(jme);
jme_start_irq(jme);
if (test_bit(JME_FLAG_SSET, &jme->flags))
jme_set_settings(netdev, &jme->old_ecmd);
else
jme_reset_phy_processor(jme);
jme_reset_link(jme);
return 0;
err_out:
netif_stop_queue(netdev);
netif_carrier_off(netdev);
return rc;
}
static void
jme_set_100m_half(struct jme_adapter *jme)
{
u32 bmcr, tmp;
bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
BMCR_SPEED1000 | BMCR_FULLDPLX);
tmp |= BMCR_SPEED100;
if (bmcr != tmp)
jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
if (jme->fpgaver)
jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
else
jwrite32(jme, JME_GHC, GHC_SPEED_100M);
}
#define JME_WAIT_LINK_TIME 2000 /* 2000ms */
static void
jme_wait_link(struct jme_adapter *jme)
{
u32 phylink, to = JME_WAIT_LINK_TIME;
mdelay(1000);
phylink = jme_linkstat_from_phy(jme);
while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
mdelay(10);
phylink = jme_linkstat_from_phy(jme);
}
}
static inline void
jme_phy_off(struct jme_adapter *jme)
{
jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, BMCR_PDOWN);
}
static int
jme_close(struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
netif_stop_queue(netdev);
netif_carrier_off(netdev);
jme_stop_irq(jme);
jme_disable_shadow(jme);
jme_free_irq(jme);
JME_NAPI_DISABLE(jme);
tasklet_kill(&jme->linkch_task);
tasklet_kill(&jme->txclean_task);
tasklet_kill(&jme->rxclean_task);
tasklet_kill(&jme->rxempty_task);
jme_reset_ghc_speed(jme);
jme_disable_rx_engine(jme);
jme_disable_tx_engine(jme);
jme_reset_mac_processor(jme);
jme_free_rx_resources(jme);
jme_free_tx_resources(jme);
jme->phylink = 0;
jme_phy_off(jme);
return 0;
}
static int
jme_alloc_txdesc(struct jme_adapter *jme,
struct sk_buff *skb)
{
struct jme_ring *txring = jme->txring;
int idx, nr_alloc, mask = jme->tx_ring_mask;
idx = txring->next_to_use;
nr_alloc = skb_shinfo(skb)->nr_frags + 2;
if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
return -1;
atomic_sub(nr_alloc, &txring->nr_free);
txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
return idx;
}
static void
jme_fill_tx_map(struct pci_dev *pdev,
struct txdesc *txdesc,
struct jme_buffer_info *txbi,
struct page *page,
u32 page_offset,
u32 len,
u8 hidma)
{
dma_addr_t dmaaddr;
dmaaddr = pci_map_page(pdev,
page,
page_offset,
len,
PCI_DMA_TODEVICE);
pci_dma_sync_single_for_device(pdev,
dmaaddr,
len,
PCI_DMA_TODEVICE);
txdesc->dw[0] = 0;
txdesc->dw[1] = 0;
txdesc->desc2.flags = TXFLAG_OWN;
txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0;
txdesc->desc2.datalen = cpu_to_le16(len);
txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32);
txdesc->desc2.bufaddrl = cpu_to_le32(
(__u64)dmaaddr & 0xFFFFFFFFUL);
txbi->mapping = dmaaddr;
txbi->len = len;
}
static void
jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
{
struct jme_ring *txring = jme->txring;
struct txdesc *txdesc = txring->desc, *ctxdesc;
struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
int i, nr_frags = skb_shinfo(skb)->nr_frags;
int mask = jme->tx_ring_mask;
struct skb_frag_struct *frag;
u32 len;
for (i = 0 ; i < nr_frags ; ++i) {
frag = &skb_shinfo(skb)->frags[i];
ctxdesc = txdesc + ((idx + i + 2) & (mask));
ctxbi = txbi + ((idx + i + 2) & (mask));
jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
frag->page_offset, frag->size, hidma);
}
len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
ctxdesc = txdesc + ((idx + 1) & (mask));
ctxbi = txbi + ((idx + 1) & (mask));
jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
offset_in_page(skb->data), len, hidma);
}
static int
jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
{
if (unlikely(skb_shinfo(skb)->gso_size &&
skb_header_cloned(skb) &&
pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
dev_kfree_skb(skb);
return -1;
}
return 0;
}
static int
jme_tx_tso(struct sk_buff *skb,
u16 *mss, u8 *flags)
{
*mss = skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT;
if (*mss) {
*flags |= TXFLAG_LSEN;
if (skb->protocol == htons(ETH_P_IP)) {
struct iphdr *iph = ip_hdr(skb);
iph->check = 0;
tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
iph->daddr, 0,
IPPROTO_TCP,
0);
} else {
struct ipv6hdr *ip6h = ipv6_hdr(skb);
tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
&ip6h->daddr, 0,
IPPROTO_TCP,
0);
}
return 0;
}
return 1;
}
static void
jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
{
if (skb->ip_summed == CHECKSUM_PARTIAL) {
u8 ip_proto;
switch (skb->protocol) {
case htons(ETH_P_IP):
ip_proto = ip_hdr(skb)->protocol;
break;
case htons(ETH_P_IPV6):
ip_proto = ipv6_hdr(skb)->nexthdr;
break;
default:
ip_proto = 0;
break;
}
switch (ip_proto) {
case IPPROTO_TCP:
*flags |= TXFLAG_TCPCS;
break;
case IPPROTO_UDP:
*flags |= TXFLAG_UDPCS;
break;
default:
msg_tx_err(jme, "Error upper layer protocol.\n");
break;
}
}
}
static inline void
jme_tx_vlan(struct sk_buff *skb, u16 *vlan, u8 *flags)
{
if (vlan_tx_tag_present(skb)) {
*flags |= TXFLAG_TAGON;
*vlan = vlan_tx_tag_get(skb);
}
}
static int
jme_fill_first_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
{
struct jme_ring *txring = jme->txring;
struct txdesc *txdesc;
struct jme_buffer_info *txbi;
u8 flags;
txdesc = (struct txdesc *)txring->desc + idx;
txbi = txring->bufinf + idx;
txdesc->dw[0] = 0;
txdesc->dw[1] = 0;
txdesc->dw[2] = 0;
txdesc->dw[3] = 0;
txdesc->desc1.pktsize = cpu_to_le16(skb->len);
/*
* Set OWN bit at final.
* When kernel transmit faster than NIC.
* And NIC trying to send this descriptor before we tell
* it to start sending this TX queue.
* Other fields are already filled correctly.
*/
wmb();
flags = TXFLAG_OWN | TXFLAG_INT;
/*
* Set checksum flags while not tso
*/
if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
jme_tx_csum(jme, skb, &flags);
jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
txdesc->desc1.flags = flags;
/*
* Set tx buffer info after telling NIC to send
* For better tx_clean timing
*/
wmb();
txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
txbi->skb = skb;
txbi->len = skb->len;
txbi->start_xmit = jiffies;
if (!txbi->start_xmit)
txbi->start_xmit = (0UL-1);
return 0;
}
static void
jme_stop_queue_if_full(struct jme_adapter *jme)
{
struct jme_ring *txring = jme->txring;
struct jme_buffer_info *txbi = txring->bufinf;
int idx = atomic_read(&txring->next_to_clean);
txbi += idx;
smp_wmb();
if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
netif_stop_queue(jme->dev);
msg_tx_queued(jme, "TX Queue Paused.\n");
smp_wmb();
if (atomic_read(&txring->nr_free)
>= (jme->tx_wake_threshold)) {
netif_wake_queue(jme->dev);
msg_tx_queued(jme, "TX Queue Fast Waked.\n");
}
}
if (unlikely(txbi->start_xmit &&
(jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
txbi->skb)) {
netif_stop_queue(jme->dev);
msg_tx_queued(jme, "TX Queue Stopped %d@%lu.\n", idx, jiffies);
}
}
/*
* This function is already protected by netif_tx_lock()
*/
static int
jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
int idx;
if (unlikely(jme_expand_header(jme, skb))) {
++(NET_STAT(jme).tx_dropped);
return NETDEV_TX_OK;
}
idx = jme_alloc_txdesc(jme, skb);
if (unlikely(idx < 0)) {
netif_stop_queue(netdev);
msg_tx_err(jme, "BUG! Tx ring full when queue awake!\n");
return NETDEV_TX_BUSY;
}
jme_map_tx_skb(jme, skb, idx);
jme_fill_first_tx_desc(jme, skb, idx);
jwrite32(jme, JME_TXCS, jme->reg_txcs |
TXCS_SELECT_QUEUE0 |
TXCS_QUEUE0S |
TXCS_ENABLE);
netdev->trans_start = jiffies;
tx_dbg(jme, "xmit: %d+%d@%lu\n", idx,
skb_shinfo(skb)->nr_frags + 2,
jiffies);
jme_stop_queue_if_full(jme);
return NETDEV_TX_OK;
}
static int
jme_set_macaddr(struct net_device *netdev, void *p)
{
struct jme_adapter *jme = netdev_priv(netdev);
struct sockaddr *addr = p;
u32 val;
if (netif_running(netdev))
return -EBUSY;
spin_lock_bh(&jme->macaddr_lock);
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
val = (addr->sa_data[3] & 0xff) << 24 |
(addr->sa_data[2] & 0xff) << 16 |
(addr->sa_data[1] & 0xff) << 8 |
(addr->sa_data[0] & 0xff);
jwrite32(jme, JME_RXUMA_LO, val);
val = (addr->sa_data[5] & 0xff) << 8 |
(addr->sa_data[4] & 0xff);
jwrite32(jme, JME_RXUMA_HI, val);
spin_unlock_bh(&jme->macaddr_lock);
return 0;
}
static void
jme_set_multi(struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
u32 mc_hash[2] = {};
int i;
spin_lock_bh(&jme->rxmcs_lock);
jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
if (netdev->flags & IFF_PROMISC) {
jme->reg_rxmcs |= RXMCS_ALLFRAME;
} else if (netdev->flags & IFF_ALLMULTI) {
jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
} else if (netdev->flags & IFF_MULTICAST) {
struct dev_mc_list *mclist;
int bit_nr;
jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
for (i = 0, mclist = netdev->mc_list;
mclist && i < netdev->mc_count;
++i, mclist = mclist->next) {
bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3F;
mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
}
jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
}
wmb();
jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
spin_unlock_bh(&jme->rxmcs_lock);
}
static int
jme_change_mtu(struct net_device *netdev, int new_mtu)
{
struct jme_adapter *jme = netdev_priv(netdev);
if (new_mtu == jme->old_mtu)
return 0;
if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
((new_mtu) < IPV6_MIN_MTU))
return -EINVAL;
if (new_mtu > 4000) {
jme->reg_rxcs &= ~RXCS_FIFOTHNP;
jme->reg_rxcs |= RXCS_FIFOTHNP_64QW;
jme_restart_rx_engine(jme);
} else {
jme->reg_rxcs &= ~RXCS_FIFOTHNP;
jme->reg_rxcs |= RXCS_FIFOTHNP_128QW;
jme_restart_rx_engine(jme);
}
if (new_mtu > 1900) {
netdev->features &= ~(NETIF_F_HW_CSUM |
NETIF_F_TSO |
NETIF_F_TSO6);
} else {
if (test_bit(JME_FLAG_TXCSUM, &jme->flags))
netdev->features |= NETIF_F_HW_CSUM;
if (test_bit(JME_FLAG_TSO, &jme->flags))
netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
}
netdev->mtu = new_mtu;
jme_reset_link(jme);
return 0;
}
static void
jme_tx_timeout(struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
jme->phylink = 0;
jme_reset_phy_processor(jme);
if (test_bit(JME_FLAG_SSET, &jme->flags))
jme_set_settings(netdev, &jme->old_ecmd);
/*
* Force to Reset the link again
*/
jme_reset_link(jme);
}
static void
jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
{
struct jme_adapter *jme = netdev_priv(netdev);
jme->vlgrp = grp;
}
static void
jme_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *info)
{
struct jme_adapter *jme = netdev_priv(netdev);
strcpy(info->driver, DRV_NAME);
strcpy(info->version, DRV_VERSION);
strcpy(info->bus_info, pci_name(jme->pdev));
}
static int
jme_get_regs_len(struct net_device *netdev)
{
return JME_REG_LEN;
}
static void
mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
{
int i;
for (i = 0 ; i < len ; i += 4)
p[i >> 2] = jread32(jme, reg + i);
}
static void
mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
{
int i;
u16 *p16 = (u16 *)p;
for (i = 0 ; i < reg_nr ; ++i)
p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
}
static void
jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
{
struct jme_adapter *jme = netdev_priv(netdev);
u32 *p32 = (u32 *)p;
memset(p, 0xFF, JME_REG_LEN);
regs->version = 1;
mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
p32 += 0x100 >> 2;
mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
p32 += 0x100 >> 2;
mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
p32 += 0x100 >> 2;
mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
p32 += 0x100 >> 2;
mdio_memcpy(jme, p32, JME_PHY_REG_NR);
}
static int
jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
{
struct jme_adapter *jme = netdev_priv(netdev);
ecmd->tx_coalesce_usecs = PCC_TX_TO;
ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
if (test_bit(JME_FLAG_POLL, &jme->flags)) {
ecmd->use_adaptive_rx_coalesce = false;
ecmd->rx_coalesce_usecs = 0;
ecmd->rx_max_coalesced_frames = 0;
return 0;
}
ecmd->use_adaptive_rx_coalesce = true;
switch (jme->dpi.cur) {
case PCC_P1:
ecmd->rx_coalesce_usecs = PCC_P1_TO;
ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
break;
case PCC_P2:
ecmd->rx_coalesce_usecs = PCC_P2_TO;
ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
break;
case PCC_P3:
ecmd->rx_coalesce_usecs = PCC_P3_TO;
ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
break;
default:
break;
}
return 0;
}
static int
jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
{
struct jme_adapter *jme = netdev_priv(netdev);
struct dynpcc_info *dpi = &(jme->dpi);
if (netif_running(netdev))
return -EBUSY;
if (ecmd->use_adaptive_rx_coalesce
&& test_bit(JME_FLAG_POLL, &jme->flags)) {
clear_bit(JME_FLAG_POLL, &jme->flags);
jme->jme_rx = netif_rx;
jme->jme_vlan_rx = vlan_hwaccel_rx;
dpi->cur = PCC_P1;
dpi->attempt = PCC_P1;
dpi->cnt = 0;
jme_set_rx_pcc(jme, PCC_P1);
jme_interrupt_mode(jme);
} else if (!(ecmd->use_adaptive_rx_coalesce)
&& !(test_bit(JME_FLAG_POLL, &jme->flags))) {
set_bit(JME_FLAG_POLL, &jme->flags);
jme->jme_rx = netif_receive_skb;
jme->jme_vlan_rx = vlan_hwaccel_receive_skb;
jme_interrupt_mode(jme);
}
return 0;
}
static void
jme_get_pauseparam(struct net_device *netdev,
struct ethtool_pauseparam *ecmd)
{
struct jme_adapter *jme = netdev_priv(netdev);
u32 val;
ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
spin_lock_bh(&jme->phy_lock);
val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
spin_unlock_bh(&jme->phy_lock);
ecmd->autoneg =
(val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
}
static int
jme_set_pauseparam(struct net_device *netdev,
struct ethtool_pauseparam *ecmd)
{
struct jme_adapter *jme = netdev_priv(netdev);
u32 val;
if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
(ecmd->tx_pause != 0)) {
if (ecmd->tx_pause)
jme->reg_txpfc |= TXPFC_PF_EN;
else
jme->reg_txpfc &= ~TXPFC_PF_EN;
jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
}
spin_lock_bh(&jme->rxmcs_lock);
if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
(ecmd->rx_pause != 0)) {
if (ecmd->rx_pause)
jme->reg_rxmcs |= RXMCS_FLOWCTRL;
else
jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
}
spin_unlock_bh(&jme->rxmcs_lock);
spin_lock_bh(&jme->phy_lock);
val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
(ecmd->autoneg != 0)) {
if (ecmd->autoneg)
val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
else
val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
jme_mdio_write(jme->dev, jme->mii_if.phy_id,
MII_ADVERTISE, val);
}
spin_unlock_bh(&jme->phy_lock);
return 0;
}
static void
jme_get_wol(struct net_device *netdev,
struct ethtool_wolinfo *wol)
{
struct jme_adapter *jme = netdev_priv(netdev);
wol->supported = WAKE_MAGIC | WAKE_PHY;
wol->wolopts = 0;
if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
wol->wolopts |= WAKE_PHY;
if (jme->reg_pmcs & PMCS_MFEN)
wol->wolopts |= WAKE_MAGIC;
}
static int
jme_set_wol(struct net_device *netdev,
struct ethtool_wolinfo *wol)
{
struct jme_adapter *jme = netdev_priv(netdev);
if (wol->wolopts & (WAKE_MAGICSECURE |
WAKE_UCAST |
WAKE_MCAST |
WAKE_BCAST |
WAKE_ARP))
return -EOPNOTSUPP;
jme->reg_pmcs = 0;
if (wol->wolopts & WAKE_PHY)
jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
if (wol->wolopts & WAKE_MAGIC)
jme->reg_pmcs |= PMCS_MFEN;
jwrite32(jme, JME_PMCS, jme->reg_pmcs);
return 0;
}
static int
jme_get_settings(struct net_device *netdev,
struct ethtool_cmd *ecmd)
{
struct jme_adapter *jme = netdev_priv(netdev);
int rc;
spin_lock_bh(&jme->phy_lock);
rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
spin_unlock_bh(&jme->phy_lock);
return rc;
}
static int
jme_set_settings(struct net_device *netdev,
struct ethtool_cmd *ecmd)
{
struct jme_adapter *jme = netdev_priv(netdev);
int rc, fdc = 0;
if (ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE)
return -EINVAL;
if (jme->mii_if.force_media &&
ecmd->autoneg != AUTONEG_ENABLE &&
(jme->mii_if.full_duplex != ecmd->duplex))
fdc = 1;
spin_lock_bh(&jme->phy_lock);
rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
spin_unlock_bh(&jme->phy_lock);
if (!rc && fdc)
jme_reset_link(jme);
if (!rc) {
set_bit(JME_FLAG_SSET, &jme->flags);
jme->old_ecmd = *ecmd;
}
return rc;
}
static u32
jme_get_link(struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
}
static u32
jme_get_msglevel(struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
return jme->msg_enable;
}
static void
jme_set_msglevel(struct net_device *netdev, u32 value)
{
struct jme_adapter *jme = netdev_priv(netdev);
jme->msg_enable = value;
}
static u32
jme_get_rx_csum(struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
return jme->reg_rxmcs & RXMCS_CHECKSUM;
}
static int
jme_set_rx_csum(struct net_device *netdev, u32 on)
{
struct jme_adapter *jme = netdev_priv(netdev);
spin_lock_bh(&jme->rxmcs_lock);
if (on)
jme->reg_rxmcs |= RXMCS_CHECKSUM;
else
jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
spin_unlock_bh(&jme->rxmcs_lock);
return 0;
}
static int
jme_set_tx_csum(struct net_device *netdev, u32 on)
{
struct jme_adapter *jme = netdev_priv(netdev);
if (on) {
set_bit(JME_FLAG_TXCSUM, &jme->flags);
if (netdev->mtu <= 1900)
netdev->features |= NETIF_F_HW_CSUM;
} else {
clear_bit(JME_FLAG_TXCSUM, &jme->flags);
netdev->features &= ~NETIF_F_HW_CSUM;
}
return 0;
}
static int
jme_set_tso(struct net_device *netdev, u32 on)
{
struct jme_adapter *jme = netdev_priv(netdev);
if (on) {
set_bit(JME_FLAG_TSO, &jme->flags);
if (netdev->mtu <= 1900)
netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
} else {
clear_bit(JME_FLAG_TSO, &jme->flags);
netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
}
return 0;
}
static int
jme_nway_reset(struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
jme_restart_an(jme);
return 0;
}
static u8
jme_smb_read(struct jme_adapter *jme, unsigned int addr)
{
u32 val;
int to;
val = jread32(jme, JME_SMBCSR);
to = JME_SMB_BUSY_TIMEOUT;
while ((val & SMBCSR_BUSY) && --to) {
msleep(1);
val = jread32(jme, JME_SMBCSR);
}
if (!to) {
msg_hw(jme, "SMB Bus Busy.\n");
return 0xFF;
}
jwrite32(jme, JME_SMBINTF,
((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
SMBINTF_HWRWN_READ |
SMBINTF_HWCMD);
val = jread32(jme, JME_SMBINTF);
to = JME_SMB_BUSY_TIMEOUT;
while ((val & SMBINTF_HWCMD) && --to) {
msleep(1);
val = jread32(jme, JME_SMBINTF);
}
if (!to) {
msg_hw(jme, "SMB Bus Busy.\n");
return 0xFF;
}
return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
}
static void
jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
{
u32 val;
int to;
val = jread32(jme, JME_SMBCSR);
to = JME_SMB_BUSY_TIMEOUT;
while ((val & SMBCSR_BUSY) && --to) {
msleep(1);
val = jread32(jme, JME_SMBCSR);
}
if (!to) {
msg_hw(jme, "SMB Bus Busy.\n");
return;
}
jwrite32(jme, JME_SMBINTF,
((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
SMBINTF_HWRWN_WRITE |
SMBINTF_HWCMD);
val = jread32(jme, JME_SMBINTF);
to = JME_SMB_BUSY_TIMEOUT;
while ((val & SMBINTF_HWCMD) && --to) {
msleep(1);
val = jread32(jme, JME_SMBINTF);
}
if (!to) {
msg_hw(jme, "SMB Bus Busy.\n");
return;
}
mdelay(2);
}
static int
jme_get_eeprom_len(struct net_device *netdev)
{
struct jme_adapter *jme = netdev_priv(netdev);
u32 val;
val = jread32(jme, JME_SMBCSR);
return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
}
static int
jme_get_eeprom(struct net_device *netdev,
struct ethtool_eeprom *eeprom, u8 *data)
{
struct jme_adapter *jme = netdev_priv(netdev);
int i, offset = eeprom->offset, len = eeprom->len;
/*
* ethtool will check the boundary for us
*/
eeprom->magic = JME_EEPROM_MAGIC;
for (i = 0 ; i < len ; ++i)
data[i] = jme_smb_read(jme, i + offset);
return 0;
}
static int
jme_set_eeprom(struct net_device *netdev,
struct ethtool_eeprom *eeprom, u8 *data)
{
struct jme_adapter *jme = netdev_priv(netdev);
int i, offset = eeprom->offset, len = eeprom->len;
if (eeprom->magic != JME_EEPROM_MAGIC)
return -EINVAL;
/*
* ethtool will check the boundary for us
*/
for (i = 0 ; i < len ; ++i)
jme_smb_write(jme, i + offset, data[i]);
return 0;
}
static const struct ethtool_ops jme_ethtool_ops = {
.get_drvinfo = jme_get_drvinfo,
.get_regs_len = jme_get_regs_len,
.get_regs = jme_get_regs,
.get_coalesce = jme_get_coalesce,
.set_coalesce = jme_set_coalesce,
.get_pauseparam = jme_get_pauseparam,
.set_pauseparam = jme_set_pauseparam,
.get_wol = jme_get_wol,
.set_wol = jme_set_wol,
.get_settings = jme_get_settings,
.set_settings = jme_set_settings,
.get_link = jme_get_link,
.get_msglevel = jme_get_msglevel,
.set_msglevel = jme_set_msglevel,
.get_rx_csum = jme_get_rx_csum,
.set_rx_csum = jme_set_rx_csum,
.set_tx_csum = jme_set_tx_csum,
.set_tso = jme_set_tso,
.set_sg = ethtool_op_set_sg,
.nway_reset = jme_nway_reset,
.get_eeprom_len = jme_get_eeprom_len,
.get_eeprom = jme_get_eeprom,
.set_eeprom = jme_set_eeprom,
};
static int
jme_pci_dma64(struct pci_dev *pdev)
{
if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
if (!pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
return 1;
if (!pci_set_dma_mask(pdev, DMA_40BIT_MASK))
if (!pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK))
return 1;
if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
if (!pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
return 0;
return -1;
}
static inline void
jme_phy_init(struct jme_adapter *jme)
{
u16 reg26;
reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
}
static inline void
jme_check_hw_ver(struct jme_adapter *jme)
{
u32 chipmode;
chipmode = jread32(jme, JME_CHIPMODE);
jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
}
static int __devinit
jme_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int rc = 0, using_dac, i;
struct net_device *netdev;
struct jme_adapter *jme;
u16 bmcr, bmsr;
u32 apmc;
/*
* set up PCI device basics
*/
rc = pci_enable_device(pdev);
if (rc) {
jeprintk(pdev, "Cannot enable PCI device.\n");
goto err_out;
}
using_dac = jme_pci_dma64(pdev);
if (using_dac < 0) {
jeprintk(pdev, "Cannot set PCI DMA Mask.\n");
rc = -EIO;
goto err_out_disable_pdev;
}
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
jeprintk(pdev, "No PCI resource region found.\n");
rc = -ENOMEM;
goto err_out_disable_pdev;
}
rc = pci_request_regions(pdev, DRV_NAME);
if (rc) {
jeprintk(pdev, "Cannot obtain PCI resource region.\n");
goto err_out_disable_pdev;
}
pci_set_master(pdev);
/*
* alloc and init net device
*/
netdev = alloc_etherdev(sizeof(*jme));
if (!netdev) {
jeprintk(pdev, "Cannot allocate netdev structure.\n");
rc = -ENOMEM;
goto err_out_release_regions;
}
netdev->open = jme_open;
netdev->stop = jme_close;
netdev->hard_start_xmit = jme_start_xmit;
netdev->set_mac_address = jme_set_macaddr;
netdev->set_multicast_list = jme_set_multi;
netdev->change_mtu = jme_change_mtu;
netdev->ethtool_ops = &jme_ethtool_ops;
netdev->tx_timeout = jme_tx_timeout;
netdev->watchdog_timeo = TX_TIMEOUT;
netdev->vlan_rx_register = jme_vlan_rx_register;
NETDEV_GET_STATS(netdev, &jme_get_stats);
netdev->features = NETIF_F_HW_CSUM |
NETIF_F_SG |
NETIF_F_TSO |
NETIF_F_TSO6 |
NETIF_F_HW_VLAN_TX |
NETIF_F_HW_VLAN_RX;
if (using_dac)
netdev->features |= NETIF_F_HIGHDMA;
SET_NETDEV_DEV(netdev, &pdev->dev);
pci_set_drvdata(pdev, netdev);
/*
* init adapter info
*/
jme = netdev_priv(netdev);
jme->pdev = pdev;
jme->dev = netdev;
jme->jme_rx = netif_rx;
jme->jme_vlan_rx = vlan_hwaccel_rx;
jme->old_mtu = netdev->mtu = 1500;
jme->phylink = 0;
jme->tx_ring_size = 1 << 10;
jme->tx_ring_mask = jme->tx_ring_size - 1;
jme->tx_wake_threshold = 1 << 9;
jme->rx_ring_size = 1 << 9;
jme->rx_ring_mask = jme->rx_ring_size - 1;
jme->msg_enable = JME_DEF_MSG_ENABLE;
jme->regs = ioremap(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
if (!(jme->regs)) {
jeprintk(pdev, "Mapping PCI resource region error.\n");
rc = -ENOMEM;
goto err_out_free_netdev;
}
jme->shadow_regs = pci_alloc_consistent(pdev,
sizeof(u32) * SHADOW_REG_NR,
&(jme->shadow_dma));
if (!(jme->shadow_regs)) {
jeprintk(pdev, "Allocating shadow register mapping error.\n");
rc = -ENOMEM;
goto err_out_unmap;
}
if (no_pseudohp) {
apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
jwrite32(jme, JME_APMC, apmc);
} else if (force_pseudohp) {
apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
jwrite32(jme, JME_APMC, apmc);
}
NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
spin_lock_init(&jme->phy_lock);
spin_lock_init(&jme->macaddr_lock);
spin_lock_init(&jme->rxmcs_lock);
atomic_set(&jme->link_changing, 1);
atomic_set(&jme->rx_cleaning, 1);
atomic_set(&jme->tx_cleaning, 1);
atomic_set(&jme->rx_empty, 1);
tasklet_init(&jme->pcc_task,
&jme_pcc_tasklet,
(unsigned long) jme);
tasklet_init(&jme->linkch_task,
&jme_link_change_tasklet,
(unsigned long) jme);
tasklet_init(&jme->txclean_task,
&jme_tx_clean_tasklet,
(unsigned long) jme);
tasklet_init(&jme->rxclean_task,
&jme_rx_clean_tasklet,
(unsigned long) jme);
tasklet_init(&jme->rxempty_task,
&jme_rx_empty_tasklet,
(unsigned long) jme);
tasklet_disable_nosync(&jme->txclean_task);
tasklet_disable_nosync(&jme->rxclean_task);
tasklet_disable_nosync(&jme->rxempty_task);
jme->dpi.cur = PCC_P1;
jme->reg_ghc = 0;
jme->reg_rxcs = RXCS_DEFAULT;
jme->reg_rxmcs = RXMCS_DEFAULT;
jme->reg_txpfc = 0;
jme->reg_pmcs = PMCS_MFEN;
set_bit(JME_FLAG_TXCSUM, &jme->flags);
set_bit(JME_FLAG_TSO, &jme->flags);
/*
* Get Max Read Req Size from PCI Config Space
*/
pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
jme->mrrs &= PCI_DCSR_MRRS_MASK;
switch (jme->mrrs) {
case MRRS_128B:
jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
break;
case MRRS_256B:
jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
break;
default:
jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
break;
};
/*
* Must check before reset_mac_processor
*/
jme_check_hw_ver(jme);
jme->mii_if.dev = netdev;
if (jme->fpgaver) {
jme->mii_if.phy_id = 0;
for (i = 1 ; i < 32 ; ++i) {
bmcr = jme_mdio_read(netdev, i, MII_BMCR);
bmsr = jme_mdio_read(netdev, i, MII_BMSR);
if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
jme->mii_if.phy_id = i;
break;
}
}
if (!jme->mii_if.phy_id) {
rc = -EIO;
jeprintk(pdev, "Can not find phy_id.\n");
goto err_out_free_shadow;
}
jme->reg_ghc |= GHC_LINK_POLL;
} else {
jme->mii_if.phy_id = 1;
}
if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
jme->mii_if.supports_gmii = true;
else
jme->mii_if.supports_gmii = false;
jme->mii_if.mdio_read = jme_mdio_read;
jme->mii_if.mdio_write = jme_mdio_write;
jme_clear_pm(jme);
jme_set_phyfifoa(jme);
pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->rev);
if (!jme->fpgaver)
jme_phy_init(jme);
jme_phy_off(jme);
/*
* Reset MAC processor and reload EEPROM for MAC Address
*/
jme_reset_mac_processor(jme);
rc = jme_reload_eeprom(jme);
if (rc) {
jeprintk(pdev,
"Reload eeprom for reading MAC Address error.\n");
goto err_out_free_shadow;
}
jme_load_macaddr(netdev);
/*
* Tell stack that we are not ready to work until open()
*/
netif_carrier_off(netdev);
netif_stop_queue(netdev);
/*
* Register netdev
*/
rc = register_netdev(netdev);
if (rc) {
jeprintk(pdev, "Cannot register net device.\n");
goto err_out_free_shadow;
}
msg_probe(jme,
"JMC250 gigabit%s ver:%x rev:%x "
"macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n",
(jme->fpgaver != 0) ? " (FPGA)" : "",
(jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
jme->rev,
netdev->dev_addr[0],
netdev->dev_addr[1],
netdev->dev_addr[2],
netdev->dev_addr[3],
netdev->dev_addr[4],
netdev->dev_addr[5]);
return 0;
err_out_free_shadow:
pci_free_consistent(pdev,
sizeof(u32) * SHADOW_REG_NR,
jme->shadow_regs,
jme->shadow_dma);
err_out_unmap:
iounmap(jme->regs);
err_out_free_netdev:
pci_set_drvdata(pdev, NULL);
free_netdev(netdev);
err_out_release_regions:
pci_release_regions(pdev);
err_out_disable_pdev:
pci_disable_device(pdev);
err_out:
return rc;
}
static void __devexit
jme_remove_one(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct jme_adapter *jme = netdev_priv(netdev);
unregister_netdev(netdev);
pci_free_consistent(pdev,
sizeof(u32) * SHADOW_REG_NR,
jme->shadow_regs,
jme->shadow_dma);
iounmap(jme->regs);
pci_set_drvdata(pdev, NULL);
free_netdev(netdev);
pci_release_regions(pdev);
pci_disable_device(pdev);
}
static int
jme_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct jme_adapter *jme = netdev_priv(netdev);
atomic_dec(&jme->link_changing);
netif_device_detach(netdev);
netif_stop_queue(netdev);
jme_stop_irq(jme);
tasklet_disable(&jme->txclean_task);
tasklet_disable(&jme->rxclean_task);
tasklet_disable(&jme->rxempty_task);
jme_disable_shadow(jme);
if (netif_carrier_ok(netdev)) {
if (test_bit(JME_FLAG_POLL, &jme->flags))
jme_polling_mode(jme);
jme_stop_pcc_timer(jme);
jme_reset_ghc_speed(jme);
jme_disable_rx_engine(jme);
jme_disable_tx_engine(jme);
jme_reset_mac_processor(jme);
jme_free_rx_resources(jme);
jme_free_tx_resources(jme);
netif_carrier_off(netdev);
jme->phylink = 0;
}
tasklet_enable(&jme->txclean_task);
tasklet_hi_enable(&jme->rxclean_task);
tasklet_hi_enable(&jme->rxempty_task);
pci_save_state(pdev);
if (jme->reg_pmcs) {
jme_set_100m_half(jme);
if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
jme_wait_link(jme);
jwrite32(jme, JME_PMCS, jme->reg_pmcs);
pci_enable_wake(pdev, PCI_D3cold, true);
} else {
jme_phy_off(jme);
}
pci_set_power_state(pdev, PCI_D3cold);
return 0;
}
static int
jme_resume(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct jme_adapter *jme = netdev_priv(netdev);
jme_clear_pm(jme);
pci_restore_state(pdev);
if (test_bit(JME_FLAG_SSET, &jme->flags))
jme_set_settings(netdev, &jme->old_ecmd);
else
jme_reset_phy_processor(jme);
jme_enable_shadow(jme);
jme_start_irq(jme);
netif_device_attach(netdev);
atomic_inc(&jme->link_changing);
jme_reset_link(jme);
return 0;
}
static struct pci_device_id jme_pci_tbl[] = {
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
{ }
};
static struct pci_driver jme_driver = {
.name = DRV_NAME,
.id_table = jme_pci_tbl,
.probe = jme_init_one,
.remove = __devexit_p(jme_remove_one),
#ifdef CONFIG_PM
.suspend = jme_suspend,
.resume = jme_resume,
#endif /* CONFIG_PM */
};
static int __init
jme_init_module(void)
{
printk(KERN_INFO PFX "JMicron JMC250 gigabit ethernet "
"driver version %s\n", DRV_VERSION);
return pci_register_driver(&jme_driver);
}
static void __exit
jme_cleanup_module(void)
{
pci_unregister_driver(&jme_driver);
}
module_init(jme_init_module);
module_exit(jme_cleanup_module);
MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
drivers/net/jme.h 0 → 100644
View file @ 95252236
/*
* JMicron JMC2x0 series PCIe Ethernet Linux Device Driver
*
* Copyright 2008 JMicron Technology Corporation
* http://www.jmicron.com/
*
* Author: Guo-Fu Tseng <cooldavid@cooldavid.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef __JME_H_INCLUDED__
#define __JME_H_INCLUDEE__
#define DRV_NAME "jme"
#define DRV_VERSION "1.0.2"
#define PFX DRV_NAME ": "
#define PCI_DEVICE_ID_JMICRON_JMC250 0x0250
#define PCI_DEVICE_ID_JMICRON_JMC260 0x0260
/*
* Message related definitions
*/
#define JME_DEF_MSG_ENABLE \
(NETIF_MSG_PROBE | \
NETIF_MSG_LINK | \
NETIF_MSG_RX_ERR | \
NETIF_MSG_TX_ERR | \
NETIF_MSG_HW)
#define jeprintk(pdev, fmt, args...) \
printk(KERN_ERR PFX fmt, ## args)
#ifdef TX_DEBUG
#define tx_dbg(priv, fmt, args...) \
printk(KERN_DEBUG "%s: " fmt, (priv)->dev->name, ## args)
#else
#define tx_dbg(priv, fmt, args...)
#endif
#define jme_msg(msglvl, type, priv, fmt, args...) \
if (netif_msg_##type(priv)) \
printk(msglvl "%s: " fmt, (priv)->dev->name, ## args)
#define msg_probe(priv, fmt, args...) \
jme_msg(KERN_INFO, probe, priv, fmt, ## args)
#define msg_link(priv, fmt, args...) \
jme_msg(KERN_INFO, link, priv, fmt, ## args)
#define msg_intr(priv, fmt, args...) \
jme_msg(KERN_INFO, intr, priv, fmt, ## args)
#define msg_rx_err(priv, fmt, args...) \
jme_msg(KERN_ERR, rx_err, priv, fmt, ## args)
#define msg_rx_status(priv, fmt, args...) \
jme_msg(KERN_INFO, rx_status, priv, fmt, ## args)
#define msg_tx_err(priv, fmt, args...) \
jme_msg(KERN_ERR, tx_err, priv, fmt, ## args)
#define msg_tx_done(priv, fmt, args...) \
jme_msg(KERN_INFO, tx_done, priv, fmt, ## args)
#define msg_tx_queued(priv, fmt, args...) \
jme_msg(KERN_INFO, tx_queued, priv, fmt, ## args)
#define msg_hw(priv, fmt, args...) \
jme_msg(KERN_ERR, hw, priv, fmt, ## args)
/*
* Extra PCI Configuration space interface
*/
#define PCI_DCSR_MRRS 0x59
#define PCI_DCSR_MRRS_MASK 0x70
enum pci_dcsr_mrrs_vals {
MRRS_128B = 0x00,
MRRS_256B = 0x10,
MRRS_512B = 0x20,
MRRS_1024B = 0x30,
MRRS_2048B = 0x40,
MRRS_4096B = 0x50,
};
#define PCI_SPI 0xB0
enum pci_spi_bits {
SPI_EN = 0x10,
SPI_MISO = 0x08,
SPI_MOSI = 0x04,
SPI_SCLK = 0x02,
SPI_CS = 0x01,
};
struct jme_spi_op {
void __user *uwbuf;
void __user *urbuf;
__u8 wn; /* Number of write actions */
__u8 rn; /* Number of read actions */
__u8 bitn; /* Number of bits per action */
__u8 spd; /* The maxim acceptable speed of controller, in MHz.*/
__u8 mode; /* CPOL, CPHA, and Duplex mode of SPI */
/* Internal use only */
u8 *kwbuf;
u8 *krbuf;
u8 sr;
u16 halfclk; /* Half of clock cycle calculated from spd, in ns */
};
enum jme_spi_op_bits {
SPI_MODE_CPHA = 0x01,
SPI_MODE_CPOL = 0x02,
SPI_MODE_DUP = 0x80,
};
#define HALF_US 500 /* 500 ns */
#define JMESPIIOCTL SIOCDEVPRIVATE
/*
* Dynamic(adaptive)/Static PCC values
*/
enum dynamic_pcc_values {
PCC_OFF = 0,
PCC_P1 = 1,
PCC_P2 = 2,
PCC_P3 = 3,
PCC_OFF_TO = 0,
PCC_P1_TO = 1,
PCC_P2_TO = 64,
PCC_P3_TO = 128,
PCC_OFF_CNT = 0,
PCC_P1_CNT = 1,
PCC_P2_CNT = 16,
PCC_P3_CNT = 32,
};
struct dynpcc_info {
unsigned long last_bytes;
unsigned long last_pkts;
unsigned long intr_cnt;
unsigned char cur;
unsigned char attempt;
unsigned char cnt;
};
#define PCC_INTERVAL_US 100000
#define PCC_INTERVAL (HZ / (1000000 / PCC_INTERVAL_US))
#define PCC_P3_THRESHOLD (2 * 1024 * 1024)
#define PCC_P2_THRESHOLD 800
#define PCC_INTR_THRESHOLD 800
#define PCC_TX_TO 1000
#define PCC_TX_CNT 8
/*
* TX/RX Descriptors
*
* TX/RX Ring DESC Count Must be multiple of 16 and <= 1024
*/
#define RING_DESC_ALIGN 16 /* Descriptor alignment */
#define TX_DESC_SIZE 16
#define TX_RING_NR 8
#define TX_RING_ALLOC_SIZE(s) ((s * TX_DESC_SIZE) + RING_DESC_ALIGN)
struct txdesc {
union {
__u8 all[16];
__le32 dw[4];
struct {
/* DW0 */
__le16 vlan;
__u8 rsv1;
__u8 flags;
/* DW1 */
__le16 datalen;
__le16 mss;
/* DW2 */
__le16 pktsize;
__le16 rsv2;
/* DW3 */
__le32 bufaddr;
} desc1;
struct {
/* DW0 */
__le16 rsv1;
__u8 rsv2;
__u8 flags;
/* DW1 */
__le16 datalen;
__le16 rsv3;
/* DW2 */
__le32 bufaddrh;
/* DW3 */
__le32 bufaddrl;
} desc2;
struct {
/* DW0 */
__u8 ehdrsz;
__u8 rsv1;
__u8 rsv2;
__u8 flags;
/* DW1 */
__le16 trycnt;
__le16 segcnt;
/* DW2 */
__le16 pktsz;
__le16 rsv3;
/* DW3 */
__le32 bufaddrl;
} descwb;
};
};
enum jme_txdesc_flags_bits {
TXFLAG_OWN = 0x80,
TXFLAG_INT = 0x40,
TXFLAG_64BIT = 0x20,
TXFLAG_TCPCS = 0x10,
TXFLAG_UDPCS = 0x08,
TXFLAG_IPCS = 0x04,
TXFLAG_LSEN = 0x02,
TXFLAG_TAGON = 0x01,
};
#define TXDESC_MSS_SHIFT 2
enum jme_rxdescwb_flags_bits {
TXWBFLAG_OWN = 0x80,
TXWBFLAG_INT = 0x40,
TXWBFLAG_TMOUT = 0x20,
TXWBFLAG_TRYOUT = 0x10,
TXWBFLAG_COL = 0x08,
TXWBFLAG_ALLERR = TXWBFLAG_TMOUT |
TXWBFLAG_TRYOUT |
TXWBFLAG_COL,
};
#define RX_DESC_SIZE 16
#define RX_RING_NR 4
#define RX_RING_ALLOC_SIZE(s) ((s * RX_DESC_SIZE) + RING_DESC_ALIGN)
#define RX_BUF_DMA_ALIGN 8
#define RX_PREPAD_SIZE 10
#define ETH_CRC_LEN 2
#define RX_VLANHDR_LEN 2
#define RX_EXTRA_LEN (RX_PREPAD_SIZE + \
ETH_HLEN + \
ETH_CRC_LEN + \
RX_VLANHDR_LEN + \
RX_BUF_DMA_ALIGN)
struct rxdesc {
union {
__u8 all[16];
__le32 dw[4];
struct {
/* DW0 */
__le16 rsv2;
__u8 rsv1;
__u8 flags;
/* DW1 */
__le16 datalen;
__le16 wbcpl;
/* DW2 */
__le32 bufaddrh;
/* DW3 */
__le32 bufaddrl;
} desc1;
struct {
/* DW0 */
__le16 vlan;
__le16 flags;
/* DW1 */
__le16 framesize;
__u8 errstat;
__u8 desccnt;
/* DW2 */
__le32 rsshash;
/* DW3 */
__u8 hashfun;
__u8 hashtype;
__le16 resrv;
} descwb;
};
};
enum jme_rxdesc_flags_bits {
RXFLAG_OWN = 0x80,
RXFLAG_INT = 0x40,
RXFLAG_64BIT = 0x20,
};
enum jme_rxwbdesc_flags_bits {
RXWBFLAG_OWN = 0x8000,
RXWBFLAG_INT = 0x4000,
RXWBFLAG_MF = 0x2000,
RXWBFLAG_64BIT = 0x2000,
RXWBFLAG_TCPON = 0x1000,
RXWBFLAG_UDPON = 0x0800,
RXWBFLAG_IPCS = 0x0400,
RXWBFLAG_TCPCS = 0x0200,
RXWBFLAG_UDPCS = 0x0100,
RXWBFLAG_TAGON = 0x0080,
RXWBFLAG_IPV4 = 0x0040,
RXWBFLAG_IPV6 = 0x0020,
RXWBFLAG_PAUSE = 0x0010,
RXWBFLAG_MAGIC = 0x0008,
RXWBFLAG_WAKEUP = 0x0004,
RXWBFLAG_DEST = 0x0003,
RXWBFLAG_DEST_UNI = 0x0001,
RXWBFLAG_DEST_MUL = 0x0002,
RXWBFLAG_DEST_BRO = 0x0003,
};
enum jme_rxwbdesc_desccnt_mask {
RXWBDCNT_WBCPL = 0x80,
RXWBDCNT_DCNT = 0x7F,
};
enum jme_rxwbdesc_errstat_bits {
RXWBERR_LIMIT = 0x80,
RXWBERR_MIIER = 0x40,
RXWBERR_NIBON = 0x20,
RXWBERR_COLON = 0x10,
RXWBERR_ABORT = 0x08,
RXWBERR_SHORT = 0x04,
RXWBERR_OVERUN = 0x02,
RXWBERR_CRCERR = 0x01,
RXWBERR_ALLERR = 0xFF,
};
/*
* Buffer information corresponding to ring descriptors.
*/
struct jme_buffer_info {
struct sk_buff *skb;
dma_addr_t mapping;
int len;
int nr_desc;
unsigned long start_xmit;
};
/*
* The structure holding buffer information and ring descriptors all together.
*/
#define MAX_RING_DESC_NR 1024
struct jme_ring {
void *alloc; /* pointer to allocated memory */
void *desc; /* pointer to ring memory */
dma_addr_t dmaalloc; /* phys address of ring alloc */
dma_addr_t dma; /* phys address for ring dma */
/* Buffer information corresponding to each descriptor */
struct jme_buffer_info bufinf[MAX_RING_DESC_NR];
int next_to_use;
atomic_t next_to_clean;
atomic_t nr_free;
};
#define NET_STAT(priv) (priv->dev->stats)
#define NETDEV_GET_STATS(netdev, fun_ptr)
#define DECLARE_NET_DEVICE_STATS
#define DECLARE_NAPI_STRUCT struct napi_struct napi;
#define NETIF_NAPI_SET(dev, napis, pollfn, q) \
netif_napi_add(dev, napis, pollfn, q);
#define JME_NAPI_HOLDER(holder) struct napi_struct *holder
#define JME_NAPI_WEIGHT(w) int w
#define JME_NAPI_WEIGHT_VAL(w) w
#define JME_NAPI_WEIGHT_SET(w, r)
#define JME_RX_COMPLETE(dev, napis) netif_rx_complete(dev, napis)
#define JME_NAPI_ENABLE(priv) napi_enable(&priv->napi);
#define JME_NAPI_DISABLE(priv) \
if (!napi_disable_pending(&priv->napi)) \
napi_disable(&priv->napi);
#define JME_RX_SCHEDULE_PREP(priv) \
netif_rx_schedule_prep(priv->dev, &priv->napi)
#define JME_RX_SCHEDULE(priv) \
__netif_rx_schedule(priv->dev, &priv->napi);
/*
* Jmac Adapter Private data
*/
#define SHADOW_REG_NR 8
struct jme_adapter {
struct pci_dev *pdev;
struct net_device *dev;
void __iomem *regs;
dma_addr_t shadow_dma;
u32 *shadow_regs;
struct mii_if_info mii_if;
struct jme_ring rxring[RX_RING_NR];
struct jme_ring txring[TX_RING_NR];
spinlock_t phy_lock;
spinlock_t macaddr_lock;
spinlock_t rxmcs_lock;
struct tasklet_struct rxempty_task;
struct tasklet_struct rxclean_task;
struct tasklet_struct txclean_task;
struct tasklet_struct linkch_task;
struct tasklet_struct pcc_task;
unsigned long flags;
u32 reg_txcs;
u32 reg_txpfc;
u32 reg_rxcs;
u32 reg_rxmcs;
u32 reg_ghc;
u32 reg_pmcs;
u32 phylink;
u32 tx_ring_size;
u32 tx_ring_mask;
u32 tx_wake_threshold;
u32 rx_ring_size;
u32 rx_ring_mask;
u8 mrrs;
unsigned int fpgaver;
unsigned int chiprev;
u8 rev;
u32 msg_enable;
struct ethtool_cmd old_ecmd;
unsigned int old_mtu;
struct vlan_group *vlgrp;
struct dynpcc_info dpi;
atomic_t intr_sem;
atomic_t link_changing;
atomic_t tx_cleaning;
atomic_t rx_cleaning;
atomic_t rx_empty;
int (*jme_rx)(struct sk_buff *skb);
int (*jme_vlan_rx)(struct sk_buff *skb,
struct vlan_group *grp,
unsigned short vlan_tag);
DECLARE_NAPI_STRUCT
DECLARE_NET_DEVICE_STATS
};
enum shadow_reg_val {
SHADOW_IEVE = 0,
};
enum jme_flags_bits {
JME_FLAG_MSI = 1,
JME_FLAG_SSET = 2,
JME_FLAG_TXCSUM = 3,
JME_FLAG_TSO = 4,
JME_FLAG_POLL = 5,
JME_FLAG_SHUTDOWN = 6,
};
#define TX_TIMEOUT (5 * HZ)
#define JME_REG_LEN 0x500
#define MAX_ETHERNET_JUMBO_PACKET_SIZE 9216
static inline struct jme_adapter*
jme_napi_priv(struct napi_struct *napi)
{
struct jme_adapter *jme;
jme = container_of(napi, struct jme_adapter, napi);
return jme;
}
/*
* MMaped I/O Resters
*/
enum jme_iomap_offsets {
JME_MAC = 0x0000,
JME_PHY = 0x0400,
JME_MISC = 0x0800,
JME_RSS = 0x0C00,
};
enum jme_iomap_lens {
JME_MAC_LEN = 0x80,
JME_PHY_LEN = 0x58,
JME_MISC_LEN = 0x98,
JME_RSS_LEN = 0xFF,
};
enum jme_iomap_regs {
JME_TXCS = JME_MAC | 0x00, /* Transmit Control and Status */
JME_TXDBA_LO = JME_MAC | 0x04, /* Transmit Queue Desc Base Addr */
JME_TXDBA_HI = JME_MAC | 0x08, /* Transmit Queue Desc Base Addr */
JME_TXQDC = JME_MAC | 0x0C, /* Transmit Queue Desc Count */
JME_TXNDA = JME_MAC | 0x10, /* Transmit Queue Next Desc Addr */
JME_TXMCS = JME_MAC | 0x14, /* Transmit MAC Control Status */
JME_TXPFC = JME_MAC | 0x18, /* Transmit Pause Frame Control */
JME_TXTRHD = JME_MAC | 0x1C, /* Transmit Timer/Retry@Half-Dup */
JME_RXCS = JME_MAC | 0x20, /* Receive Control and Status */
JME_RXDBA_LO = JME_MAC | 0x24, /* Receive Queue Desc Base Addr */
JME_RXDBA_HI = JME_MAC | 0x28, /* Receive Queue Desc Base Addr */
JME_RXQDC = JME_MAC | 0x2C, /* Receive Queue Desc Count */
JME_RXNDA = JME_MAC | 0x30, /* Receive Queue Next Desc Addr */
JME_RXMCS = JME_MAC | 0x34, /* Receive MAC Control Status */
JME_RXUMA_LO = JME_MAC | 0x38, /* Receive Unicast MAC Address */
JME_RXUMA_HI = JME_MAC | 0x3C, /* Receive Unicast MAC Address */
JME_RXMCHT_LO = JME_MAC | 0x40, /* Recv Multicast Addr HashTable */
JME_RXMCHT_HI = JME_MAC | 0x44, /* Recv Multicast Addr HashTable */
JME_WFODP = JME_MAC | 0x48, /* Wakeup Frame Output Data Port */
JME_WFOI = JME_MAC | 0x4C, /* Wakeup Frame Output Interface */
JME_SMI = JME_MAC | 0x50, /* Station Management Interface */
JME_GHC = JME_MAC | 0x54, /* Global Host Control */
JME_PMCS = JME_MAC | 0x60, /* Power Management Control/Stat */
JME_PHY_CS = JME_PHY | 0x28, /* PHY Ctrl and Status Register */
JME_PHY_LINK = JME_PHY | 0x30, /* PHY Link Status Register */
JME_SMBCSR = JME_PHY | 0x40, /* SMB Control and Status */
JME_SMBINTF = JME_PHY | 0x44, /* SMB Interface */
JME_TMCSR = JME_MISC | 0x00, /* Timer Control/Status Register */
JME_GPREG0 = JME_MISC | 0x08, /* General purpose REG-0 */
JME_GPREG1 = JME_MISC | 0x0C, /* General purpose REG-1 */
JME_IEVE = JME_MISC | 0x20, /* Interrupt Event Status */
JME_IREQ = JME_MISC | 0x24, /* Intr Req Status(For Debug) */
JME_IENS = JME_MISC | 0x28, /* Intr Enable - Setting Port */
JME_IENC = JME_MISC | 0x2C, /* Interrupt Enable - Clear Port */
JME_PCCRX0 = JME_MISC | 0x30, /* PCC Control for RX Queue 0 */
JME_PCCTX = JME_MISC | 0x40, /* PCC Control for TX Queues */
JME_CHIPMODE = JME_MISC | 0x44, /* Identify FPGA Version */
JME_SHBA_HI = JME_MISC | 0x48, /* Shadow Register Base HI */
JME_SHBA_LO = JME_MISC | 0x4C, /* Shadow Register Base LO */
JME_TIMER1 = JME_MISC | 0x70, /* Timer1 */
JME_TIMER2 = JME_MISC | 0x74, /* Timer2 */
JME_APMC = JME_MISC | 0x7C, /* Aggressive Power Mode Control */
JME_PCCSRX0 = JME_MISC | 0x80, /* PCC Status of RX0 */
};
/*
* TX Control/Status Bits
*/
enum jme_txcs_bits {
TXCS_QUEUE7S = 0x00008000,
TXCS_QUEUE6S = 0x00004000,
TXCS_QUEUE5S = 0x00002000,
TXCS_QUEUE4S = 0x00001000,
TXCS_QUEUE3S = 0x00000800,
TXCS_QUEUE2S = 0x00000400,
TXCS_QUEUE1S = 0x00000200,
TXCS_QUEUE0S = 0x00000100,
TXCS_FIFOTH = 0x000000C0,
TXCS_DMASIZE = 0x00000030,
TXCS_BURST = 0x00000004,
TXCS_ENABLE = 0x00000001,
};
enum jme_txcs_value {
TXCS_FIFOTH_16QW = 0x000000C0,
TXCS_FIFOTH_12QW = 0x00000080,
TXCS_FIFOTH_8QW = 0x00000040,
TXCS_FIFOTH_4QW = 0x00000000,
TXCS_DMASIZE_64B = 0x00000000,
TXCS_DMASIZE_128B = 0x00000010,
TXCS_DMASIZE_256B = 0x00000020,
TXCS_DMASIZE_512B = 0x00000030,
TXCS_SELECT_QUEUE0 = 0x00000000,
TXCS_SELECT_QUEUE1 = 0x00010000,
TXCS_SELECT_QUEUE2 = 0x00020000,
TXCS_SELECT_QUEUE3 = 0x00030000,
TXCS_SELECT_QUEUE4 = 0x00040000,
TXCS_SELECT_QUEUE5 = 0x00050000,
TXCS_SELECT_QUEUE6 = 0x00060000,
TXCS_SELECT_QUEUE7 = 0x00070000,
TXCS_DEFAULT = TXCS_FIFOTH_4QW |
TXCS_BURST,
};
#define JME_TX_DISABLE_TIMEOUT 10 /* 10 msec */
/*
* TX MAC Control/Status Bits
*/
enum jme_txmcs_bit_masks {
TXMCS_IFG2 = 0xC0000000,
TXMCS_IFG1 = 0x30000000,
TXMCS_TTHOLD = 0x00000300,
TXMCS_FBURST = 0x00000080,
TXMCS_CARRIEREXT = 0x00000040,
TXMCS_DEFER = 0x00000020,
TXMCS_BACKOFF = 0x00000010,
TXMCS_CARRIERSENSE = 0x00000008,
TXMCS_COLLISION = 0x00000004,
TXMCS_CRC = 0x00000002,
TXMCS_PADDING = 0x00000001,
};
enum jme_txmcs_values {
TXMCS_IFG2_6_4 = 0x00000000,
TXMCS_IFG2_8_5 = 0x40000000,
TXMCS_IFG2_10_6 = 0x80000000,
TXMCS_IFG2_12_7 = 0xC0000000,
TXMCS_IFG1_8_4 = 0x00000000,
TXMCS_IFG1_12_6 = 0x10000000,
TXMCS_IFG1_16_8 = 0x20000000,
TXMCS_IFG1_20_10 = 0x30000000,
TXMCS_TTHOLD_1_8 = 0x00000000,
TXMCS_TTHOLD_1_4 = 0x00000100,
TXMCS_TTHOLD_1_2 = 0x00000200,
TXMCS_TTHOLD_FULL = 0x00000300,
TXMCS_DEFAULT = TXMCS_IFG2_8_5 |
TXMCS_IFG1_16_8 |
TXMCS_TTHOLD_FULL |
TXMCS_DEFER |
TXMCS_CRC |
TXMCS_PADDING,
};
enum jme_txpfc_bits_masks {
TXPFC_VLAN_TAG = 0xFFFF0000,
TXPFC_VLAN_EN = 0x00008000,
TXPFC_PF_EN = 0x00000001,
};
enum jme_txtrhd_bits_masks {
TXTRHD_TXPEN = 0x80000000,
TXTRHD_TXP = 0x7FFFFF00,
TXTRHD_TXREN = 0x00000080,
TXTRHD_TXRL = 0x0000007F,
};
enum jme_txtrhd_shifts {
TXTRHD_TXP_SHIFT = 8,
TXTRHD_TXRL_SHIFT = 0,
};
/*
* RX Control/Status Bits
*/
enum jme_rxcs_bit_masks {
/* FIFO full threshold for transmitting Tx Pause Packet */
RXCS_FIFOTHTP = 0x30000000,
/* FIFO threshold for processing next packet */
RXCS_FIFOTHNP = 0x0C000000,
RXCS_DMAREQSZ = 0x03000000, /* DMA Request Size */
RXCS_QUEUESEL = 0x00030000, /* Queue selection */
RXCS_RETRYGAP = 0x0000F000, /* RX Desc full retry gap */
RXCS_RETRYCNT = 0x00000F00, /* RX Desc full retry counter */
RXCS_WAKEUP = 0x00000040, /* Enable receive wakeup packet */
RXCS_MAGIC = 0x00000020, /* Enable receive magic packet */
RXCS_SHORT = 0x00000010, /* Enable receive short packet */
RXCS_ABORT = 0x00000008, /* Enable receive errorr packet */
RXCS_QST = 0x00000004, /* Receive queue start */
RXCS_SUSPEND = 0x00000002,
RXCS_ENABLE = 0x00000001,
};
enum jme_rxcs_values {
RXCS_FIFOTHTP_16T = 0x00000000,
RXCS_FIFOTHTP_32T = 0x10000000,
RXCS_FIFOTHTP_64T = 0x20000000,
RXCS_FIFOTHTP_128T = 0x30000000,
RXCS_FIFOTHNP_16QW = 0x00000000,
RXCS_FIFOTHNP_32QW = 0x04000000,
RXCS_FIFOTHNP_64QW = 0x08000000,
RXCS_FIFOTHNP_128QW = 0x0C000000,
RXCS_DMAREQSZ_16B = 0x00000000,
RXCS_DMAREQSZ_32B = 0x01000000,
RXCS_DMAREQSZ_64B = 0x02000000,
RXCS_DMAREQSZ_128B = 0x03000000,
RXCS_QUEUESEL_Q0 = 0x00000000,
RXCS_QUEUESEL_Q1 = 0x00010000,
RXCS_QUEUESEL_Q2 = 0x00020000,
RXCS_QUEUESEL_Q3 = 0x00030000,
RXCS_RETRYGAP_256ns = 0x00000000,
RXCS_RETRYGAP_512ns = 0x00001000,
RXCS_RETRYGAP_1024ns = 0x00002000,
RXCS_RETRYGAP_2048ns = 0x00003000,
RXCS_RETRYGAP_4096ns = 0x00004000,
RXCS_RETRYGAP_8192ns = 0x00005000,
RXCS_RETRYGAP_16384ns = 0x00006000,
RXCS_RETRYGAP_32768ns = 0x00007000,
RXCS_RETRYCNT_0 = 0x00000000,
RXCS_RETRYCNT_4 = 0x00000100,
RXCS_RETRYCNT_8 = 0x00000200,
RXCS_RETRYCNT_12 = 0x00000300,
RXCS_RETRYCNT_16 = 0x00000400,
RXCS_RETRYCNT_20 = 0x00000500,
RXCS_RETRYCNT_24 = 0x00000600,
RXCS_RETRYCNT_28 = 0x00000700,
RXCS_RETRYCNT_32 = 0x00000800,
RXCS_RETRYCNT_36 = 0x00000900,
RXCS_RETRYCNT_40 = 0x00000A00,
RXCS_RETRYCNT_44 = 0x00000B00,
RXCS_RETRYCNT_48 = 0x00000C00,
RXCS_RETRYCNT_52 = 0x00000D00,
RXCS_RETRYCNT_56 = 0x00000E00,
RXCS_RETRYCNT_60 = 0x00000F00,
RXCS_DEFAULT = RXCS_FIFOTHTP_128T |
RXCS_FIFOTHNP_128QW |
RXCS_DMAREQSZ_128B |
RXCS_RETRYGAP_256ns |
RXCS_RETRYCNT_32,
};
#define JME_RX_DISABLE_TIMEOUT 10 /* 10 msec */
/*
* RX MAC Control/Status Bits
*/
enum jme_rxmcs_bits {
RXMCS_ALLFRAME = 0x00000800,
RXMCS_BRDFRAME = 0x00000400,
RXMCS_MULFRAME = 0x00000200,
RXMCS_UNIFRAME = 0x00000100,
RXMCS_ALLMULFRAME = 0x00000080,
RXMCS_MULFILTERED = 0x00000040,
RXMCS_RXCOLLDEC = 0x00000020,
RXMCS_FLOWCTRL = 0x00000008,
RXMCS_VTAGRM = 0x00000004,
RXMCS_PREPAD = 0x00000002,
RXMCS_CHECKSUM = 0x00000001,
RXMCS_DEFAULT = RXMCS_VTAGRM |
RXMCS_PREPAD |
RXMCS_FLOWCTRL |
RXMCS_CHECKSUM,
};
/*
* Wakeup Frame setup interface registers
*/
#define WAKEUP_FRAME_NR 8
#define WAKEUP_FRAME_MASK_DWNR 4
enum jme_wfoi_bit_masks {
WFOI_MASK_SEL = 0x00000070,
WFOI_CRC_SEL = 0x00000008,
WFOI_FRAME_SEL = 0x00000007,
};
enum jme_wfoi_shifts {
WFOI_MASK_SHIFT = 4,
};
/*
* SMI Related definitions
*/
enum jme_smi_bit_mask {
SMI_DATA_MASK = 0xFFFF0000,
SMI_REG_ADDR_MASK = 0x0000F800,
SMI_PHY_ADDR_MASK = 0x000007C0,
SMI_OP_WRITE = 0x00000020,
/* Set to 1, after req done it'll be cleared to 0 */
SMI_OP_REQ = 0x00000010,
SMI_OP_MDIO = 0x00000008, /* Software assess In/Out */
SMI_OP_MDOE = 0x00000004, /* Software Output Enable */
SMI_OP_MDC = 0x00000002, /* Software CLK Control */
SMI_OP_MDEN = 0x00000001, /* Software access Enable */
};
enum jme_smi_bit_shift {
SMI_DATA_SHIFT = 16,
SMI_REG_ADDR_SHIFT = 11,
SMI_PHY_ADDR_SHIFT = 6,
};
static inline u32 smi_reg_addr(int x)
{
return (x << SMI_REG_ADDR_SHIFT) & SMI_REG_ADDR_MASK;
}
static inline u32 smi_phy_addr(int x)
{
return (x << SMI_PHY_ADDR_SHIFT) & SMI_PHY_ADDR_MASK;
}
#define JME_PHY_TIMEOUT 100 /* 100 msec */
#define JME_PHY_REG_NR 32
/*
* Global Host Control
*/
enum jme_ghc_bit_mask {
GHC_SWRST = 0x40000000,
GHC_DPX = 0x00000040,
GHC_SPEED = 0x00000030,
GHC_LINK_POLL = 0x00000001,
};
enum jme_ghc_speed_val {
GHC_SPEED_10M = 0x00000010,
GHC_SPEED_100M = 0x00000020,
GHC_SPEED_1000M = 0x00000030,
};
/*
* Power management control and status register
*/
enum jme_pmcs_bit_masks {
PMCS_WF7DET = 0x80000000,
PMCS_WF6DET = 0x40000000,
PMCS_WF5DET = 0x20000000,
PMCS_WF4DET = 0x10000000,
PMCS_WF3DET = 0x08000000,
PMCS_WF2DET = 0x04000000,
PMCS_WF1DET = 0x02000000,
PMCS_WF0DET = 0x01000000,
PMCS_LFDET = 0x00040000,
PMCS_LRDET = 0x00020000,
PMCS_MFDET = 0x00010000,
PMCS_WF7EN = 0x00008000,
PMCS_WF6EN = 0x00004000,
PMCS_WF5EN = 0x00002000,
PMCS_WF4EN = 0x00001000,
PMCS_WF3EN = 0x00000800,
PMCS_WF2EN = 0x00000400,
PMCS_WF1EN = 0x00000200,
PMCS_WF0EN = 0x00000100,
PMCS_LFEN = 0x00000004,
PMCS_LREN = 0x00000002,
PMCS_MFEN = 0x00000001,
};
/*
* Giga PHY Status Registers
*/
enum jme_phy_link_bit_mask {
PHY_LINK_SPEED_MASK = 0x0000C000,
PHY_LINK_DUPLEX = 0x00002000,
PHY_LINK_SPEEDDPU_RESOLVED = 0x00000800,
PHY_LINK_UP = 0x00000400,
PHY_LINK_AUTONEG_COMPLETE = 0x00000200,
PHY_LINK_MDI_STAT = 0x00000040,
};
enum jme_phy_link_speed_val {
PHY_LINK_SPEED_10M = 0x00000000,
PHY_LINK_SPEED_100M = 0x00004000,
PHY_LINK_SPEED_1000M = 0x00008000,
};
#define JME_SPDRSV_TIMEOUT 500 /* 500 us */
/*
* SMB Control and Status
*/
enum jme_smbcsr_bit_mask {
SMBCSR_CNACK = 0x00020000,
SMBCSR_RELOAD = 0x00010000,
SMBCSR_EEPROMD = 0x00000020,
SMBCSR_INITDONE = 0x00000010,
SMBCSR_BUSY = 0x0000000F,
};
enum jme_smbintf_bit_mask {
SMBINTF_HWDATR = 0xFF000000,
SMBINTF_HWDATW = 0x00FF0000,
SMBINTF_HWADDR = 0x0000FF00,
SMBINTF_HWRWN = 0x00000020,
SMBINTF_HWCMD = 0x00000010,
SMBINTF_FASTM = 0x00000008,
SMBINTF_GPIOSCL = 0x00000004,
SMBINTF_GPIOSDA = 0x00000002,
SMBINTF_GPIOEN = 0x00000001,
};
enum jme_smbintf_vals {
SMBINTF_HWRWN_READ = 0x00000020,
SMBINTF_HWRWN_WRITE = 0x00000000,
};
enum jme_smbintf_shifts {
SMBINTF_HWDATR_SHIFT = 24,
SMBINTF_HWDATW_SHIFT = 16,
SMBINTF_HWADDR_SHIFT = 8,
};
#define JME_EEPROM_RELOAD_TIMEOUT 2000 /* 2000 msec */
#define JME_SMB_BUSY_TIMEOUT 20 /* 20 msec */
#define JME_SMB_LEN 256
#define JME_EEPROM_MAGIC 0x250
/*
* Timer Control/Status Register
*/
enum jme_tmcsr_bit_masks {
TMCSR_SWIT = 0x80000000,
TMCSR_EN = 0x01000000,
TMCSR_CNT = 0x00FFFFFF,
};
/*
* General Purpose REG-0
*/
enum jme_gpreg0_masks {
GPREG0_DISSH = 0xFF000000,
GPREG0_PCIRLMT = 0x00300000,
GPREG0_PCCNOMUTCLR = 0x00040000,
GPREG0_LNKINTPOLL = 0x00001000,
GPREG0_PCCTMR = 0x00000300,
GPREG0_PHYADDR = 0x0000001F,
};
enum jme_gpreg0_vals {
GPREG0_DISSH_DW7 = 0x80000000,
GPREG0_DISSH_DW6 = 0x40000000,
GPREG0_DISSH_DW5 = 0x20000000,
GPREG0_DISSH_DW4 = 0x10000000,
GPREG0_DISSH_DW3 = 0x08000000,
GPREG0_DISSH_DW2 = 0x04000000,
GPREG0_DISSH_DW1 = 0x02000000,
GPREG0_DISSH_DW0 = 0x01000000,
GPREG0_DISSH_ALL = 0xFF000000,
GPREG0_PCIRLMT_8 = 0x00000000,
GPREG0_PCIRLMT_6 = 0x00100000,
GPREG0_PCIRLMT_5 = 0x00200000,
GPREG0_PCIRLMT_4 = 0x00300000,
GPREG0_PCCTMR_16ns = 0x00000000,
GPREG0_PCCTMR_256ns = 0x00000100,
GPREG0_PCCTMR_1us = 0x00000200,
GPREG0_PCCTMR_1ms = 0x00000300,
GPREG0_PHYADDR_1 = 0x00000001,
GPREG0_DEFAULT = GPREG0_PCIRLMT_4 |
GPREG0_PCCTMR_1us |
GPREG0_PHYADDR_1,
};
/*
* Interrupt Status Bits
*/
enum jme_interrupt_bits {
INTR_SWINTR = 0x80000000,
INTR_TMINTR = 0x40000000,
INTR_LINKCH = 0x20000000,
INTR_PAUSERCV = 0x10000000,
INTR_MAGICRCV = 0x08000000,
INTR_WAKERCV = 0x04000000,
INTR_PCCRX0TO = 0x02000000,
INTR_PCCRX1TO = 0x01000000,
INTR_PCCRX2TO = 0x00800000,
INTR_PCCRX3TO = 0x00400000,
INTR_PCCTXTO = 0x00200000,
INTR_PCCRX0 = 0x00100000,
INTR_PCCRX1 = 0x00080000,
INTR_PCCRX2 = 0x00040000,
INTR_PCCRX3 = 0x00020000,
INTR_PCCTX = 0x00010000,
INTR_RX3EMP = 0x00008000,
INTR_RX2EMP = 0x00004000,
INTR_RX1EMP = 0x00002000,
INTR_RX0EMP = 0x00001000,
INTR_RX3 = 0x00000800,
INTR_RX2 = 0x00000400,
INTR_RX1 = 0x00000200,
INTR_RX0 = 0x00000100,
INTR_TX7 = 0x00000080,
INTR_TX6 = 0x00000040,
INTR_TX5 = 0x00000020,
INTR_TX4 = 0x00000010,
INTR_TX3 = 0x00000008,
INTR_TX2 = 0x00000004,
INTR_TX1 = 0x00000002,
INTR_TX0 = 0x00000001,
};
static const u32 INTR_ENABLE = INTR_SWINTR |
INTR_TMINTR |
INTR_LINKCH |
INTR_PCCRX0TO |
INTR_PCCRX0 |
INTR_PCCTXTO |
INTR_PCCTX |
INTR_RX0EMP;
/*
* PCC Control Registers
*/
enum jme_pccrx_masks {
PCCRXTO_MASK = 0xFFFF0000,
PCCRX_MASK = 0x0000FF00,
};
enum jme_pcctx_masks {
PCCTXTO_MASK = 0xFFFF0000,
PCCTX_MASK = 0x0000FF00,
PCCTX_QS_MASK = 0x000000FF,
};
enum jme_pccrx_shifts {
PCCRXTO_SHIFT = 16,
PCCRX_SHIFT = 8,
};
enum jme_pcctx_shifts {
PCCTXTO_SHIFT = 16,
PCCTX_SHIFT = 8,
};
enum jme_pcctx_bits {
PCCTXQ0_EN = 0x00000001,
PCCTXQ1_EN = 0x00000002,
PCCTXQ2_EN = 0x00000004,
PCCTXQ3_EN = 0x00000008,
PCCTXQ4_EN = 0x00000010,
PCCTXQ5_EN = 0x00000020,
PCCTXQ6_EN = 0x00000040,
PCCTXQ7_EN = 0x00000080,
};
/*
* Chip Mode Register
*/
enum jme_chipmode_bit_masks {
CM_FPGAVER_MASK = 0xFFFF0000,
CM_CHIPREV_MASK = 0x0000FF00,
CM_CHIPMODE_MASK = 0x0000000F,
};
enum jme_chipmode_shifts {
CM_FPGAVER_SHIFT = 16,
CM_CHIPREV_SHIFT = 8,
};
/*
* Shadow base address register bits
*/
enum jme_shadow_base_address_bits {
SHBA_POSTEN = 0x1,
};
/*
* Aggressive Power Mode Control
*/
enum jme_apmc_bits {
JME_APMC_PCIE_SD_EN = 0x40000000,
JME_APMC_PSEUDO_HP_EN = 0x20000000,
JME_APMC_EPIEN = 0x04000000,
JME_APMC_EPIEN_CTRL = 0x03000000,
};
enum jme_apmc_values {
JME_APMC_EPIEN_CTRL_EN = 0x02000000,
JME_APMC_EPIEN_CTRL_DIS = 0x01000000,
};
#define APMC_PHP_SHUTDOWN_DELAY (10 * 1000 * 1000)
#ifdef REG_DEBUG
static char *MAC_REG_NAME[] = {
"JME_TXCS", "JME_TXDBA_LO", "JME_TXDBA_HI", "JME_TXQDC",
"JME_TXNDA", "JME_TXMCS", "JME_TXPFC", "JME_TXTRHD",
"JME_RXCS", "JME_RXDBA_LO", "JME_RXDBA_HI", "JME_RXQDC",
"JME_RXNDA", "JME_RXMCS", "JME_RXUMA_LO", "JME_RXUMA_HI",
"JME_RXMCHT_LO", "JME_RXMCHT_HI", "JME_WFODP", "JME_WFOI",
"JME_SMI", "JME_GHC", "UNKNOWN", "UNKNOWN",
"JME_PMCS"};
static char *PE_REG_NAME[] = {
"UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN",
"UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN",
"UNKNOWN", "UNKNOWN", "JME_PHY_CS", "UNKNOWN",
"JME_PHY_LINK", "UNKNOWN", "UNKNOWN", "UNKNOWN",
"JME_SMBCSR", "JME_SMBINTF"};
static char *MISC_REG_NAME[] = {
"JME_TMCSR", "JME_GPIO", "JME_GPREG0", "JME_GPREG1",
"JME_IEVE", "JME_IREQ", "JME_IENS", "JME_IENC",
"JME_PCCRX0", "JME_PCCRX1", "JME_PCCRX2", "JME_PCCRX3",
"JME_PCCTX0", "JME_CHIPMODE", "JME_SHBA_HI", "JME_SHBA_LO",
"UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN",
"UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN",
"UNKNOWN", "UNKNOWN", "UNKNOWN", "UNKNOWN",
"JME_TIMER1", "JME_TIMER2", "UNKNOWN", "JME_APMC",
"JME_PCCSRX0"};
static inline void reg_dbg(const struct jme_adapter *jme,
const char *msg, u32 val, u32 reg)
{
const char *regname;
switch (reg & 0xF00) {
case 0x000:
regname = MAC_REG_NAME[(reg & 0xFF) >> 2];
break;
case 0x400:
regname = PE_REG_NAME[(reg & 0xFF) >> 2];
break;
case 0x800:
regname = MISC_REG_NAME[(reg & 0xFF) >> 2];
break;
default:
regname = PE_REG_NAME[0];
}
printk(KERN_DEBUG "%s: %-20s %08x@%s\n", jme->dev->name,
msg, val, regname);
}
#else
static inline void reg_dbg(const struct jme_adapter *jme,
const char *msg, u32 val, u32 reg) {}
#endif
/*
* Read/Write MMaped I/O Registers
*/
static inline u32 jread32(struct jme_adapter *jme, u32 reg)
{
return readl(jme->regs + reg);
}
static inline void jwrite32(struct jme_adapter *jme, u32 reg, u32 val)
{
reg_dbg(jme, "REG WRITE", val, reg);
writel(val, jme->regs + reg);
reg_dbg(jme, "VAL AFTER WRITE", readl(jme->regs + reg), reg);
}
static inline void jwrite32f(struct jme_adapter *jme, u32 reg, u32 val)
{
/*
* Read after write should cause flush
*/
reg_dbg(jme, "REG WRITE FLUSH", val, reg);
writel(val, jme->regs + reg);
readl(jme->regs + reg);
reg_dbg(jme, "VAL AFTER WRITE", readl(jme->regs + reg), reg);
}
/*
* PHY Regs
*/
enum jme_phy_reg17_bit_masks {
PREG17_SPEED = 0xC000,
PREG17_DUPLEX = 0x2000,
PREG17_SPDRSV = 0x0800,
PREG17_LNKUP = 0x0400,
PREG17_MDI = 0x0040,
};
enum jme_phy_reg17_vals {
PREG17_SPEED_10M = 0x0000,
PREG17_SPEED_100M = 0x4000,
PREG17_SPEED_1000M = 0x8000,
};
#define BMSR_ANCOMP 0x0020
/*
* Workaround
*/
static inline int is_buggy250(unsigned short device, unsigned int chiprev)
{
return device == PCI_DEVICE_ID_JMICRON_JMC250 && chiprev == 0x11;
}
/*
* Function prototypes
*/
static int jme_set_settings(struct net_device *netdev,
struct ethtool_cmd *ecmd);
static void jme_set_multi(struct net_device *netdev);
#endif
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7