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Message-Id: <200701171006.l0HA665q014636@toshiba.co.jp>
Date: Wed, 17 Jan 2007 19:06:05 +0900 (JST)
From: Ishizaki Kou <kou.ishizaki@...hiba.co.jp>
To: netdev@...r.kernel.org
Cc: linuxppc-dev@...abs.org
Subject: [PATCH 1/4] spidernet: add auto negotiation on Celleb
This patch enables spider_net driver to use auto negotiation on
Celleb. This driver also tries traditional link methods(setup_force()
and enable_fibre()). This driver is designed so as to work a PHY that
is not able to negotiate automatically, but we didn't test on it.
Signed-off-by: Kou Ishizaki <kou.ishizaki@...hiba.co.jp>
---
--- org-linux-powerpc-git/drivers/net/spider_net.h 2007-01-15 10:37:48.000000000 +0900
+++ linux-powerpc-git/drivers/net/spider_net.h 2007-01-15 10:41:25.000000000 +0900
@@ -50,6 +50,7 @@
#define SPIDER_NET_TX_DESCRIPTORS_MAX 512
#define SPIDER_NET_TX_TIMER (HZ/5)
+#define SPIDER_NET_ANEG_TIMER (HZ)
#define SPIDER_NET_RX_CSUM_DEFAULT 1
@@ -104,6 +105,7 @@
#define SPIDER_NET_GMACOPEMD 0x00000100
#define SPIDER_NET_GMACLENLMT 0x00000108
+#define SPIDER_NET_GMACST 0x00000110
#define SPIDER_NET_GMACINTEN 0x00000118
#define SPIDER_NET_GMACPHYCTRL 0x00000120
@@ -333,9 +335,12 @@
/* We rely on flagged descriptor interrupts */
#define SPIDER_NET_RXINT ( (1 << SPIDER_NET_GDAFDCINT) )
+#define SPIDER_NET_LINKINT ( 1 << SPIDER_NET_GMAC2INT )
+
#define SPIDER_NET_ERRINT ( 0xffffffff & \
(~SPIDER_NET_TXINT) & \
- (~SPIDER_NET_RXINT) )
+ (~SPIDER_NET_RXINT) & \
+ (~SPIDER_NET_LINKINT) )
#define SPIDER_NET_GPREXEC 0x80000000
#define SPIDER_NET_GPRDAT_MASK 0x0000ffff
@@ -442,6 +447,10 @@
struct spider_net_descr_chain rx_chain;
struct spider_net_descr *low_watermark;
+ int aneg_count;
+ int forced;
+ int is1000;
+ struct timer_list aneg_timer;
struct timer_list tx_timer;
struct work_struct tx_timeout_task;
atomic_t tx_timeout_task_counter;
--- org-linux-powerpc-git/drivers/net/spider_net.c 2007-01-15 10:37:48.000000000 +0900
+++ linux-powerpc-git/drivers/net/spider_net.c 2007-01-15 10:48:17.000000000 +0900
@@ -165,6 +165,74 @@
return readvalue;
}
+/** spider_net_setup_forced - initial force setup
+ * @card: device structure
+ * @speed: speed
+ * @fd: duplex mode
+ **/
+static void
+spider_net_setup_forced(struct spider_net_card *card, int speed, int fd)
+{
+ struct mii_phy *phy = &card->phy;
+
+ card->forced = 1;
+ if (phy->def->ops->setup_forced)
+ phy->def->ops->setup_forced(phy, speed, fd);
+
+ phy->def->ops->enable_fiber(phy);
+}
+
+/** spider_net_setup_aneg - initial auto-negotiation setup
+ * @card: device structure
+ **/
+static void
+spider_net_setup_aneg(struct spider_net_card *card)
+{
+ struct mii_phy *phy = &card->phy;
+ u32 advertise = 0;
+ u16 bmcr, bmsr, ctrl1000, stat1000, estat;
+
+ card->forced = 0;
+ bmcr = spider_net_read_phy(card->netdev, phy->mii_id, MII_BMCR);
+ bmsr = spider_net_read_phy(card->netdev, phy->mii_id, MII_BMSR);
+ ctrl1000 = spider_net_read_phy(card->netdev, phy->mii_id, MII_CTRL1000);
+ stat1000 = spider_net_read_phy(card->netdev, phy->mii_id, MII_STAT1000);
+ estat = spider_net_read_phy(card->netdev, phy->mii_id, MII_ESTATUS);
+
+ if (bmsr & BMSR_10HALF)
+ advertise |= ADVERTISE_10HALF;
+ if (bmsr & BMSR_10FULL)
+ advertise |= ADVERTISE_10FULL;
+ if (bmsr & BMSR_100HALF)
+ advertise |= ADVERTISE_100HALF;
+ if (bmsr & BMSR_100FULL)
+ advertise |= ADVERTISE_100FULL;
+ if (bmsr & BMSR_100BASE4)
+ advertise |= ADVERTISE_100BASE4;
+
+ if (card->is1000) {
+ if ((bmsr & BMSR_ESTATEN) && (estat & ESTATUS_1000_TFULL)) {
+ advertise |= ADVERTISE_1000XFULL;
+ ctrl1000 |= ADVERTISE_1000FULL;
+ }
+ if ((bmsr & BMSR_ESTATEN) && (estat & ESTATUS_1000_THALF)) {
+ advertise |= ADVERTISE_1000XHALF;
+ ctrl1000 |= ADVERTISE_1000HALF;
+ }
+
+ spider_net_write_phy(card->netdev, phy->mii_id,
+ MII_CTRL1000, ctrl1000);
+ spider_net_write_reg(card, SPIDER_NET_GMACMODE, 0x00000001);
+
+ phy->def->ops->setup_aneg(phy, advertise);
+ } else {
+ spider_net_write_reg(card, SPIDER_NET_GMACMODE, 0);
+ bmcr |= (BMCR_ANRESTART | BMCR_ANENABLE);
+ spider_net_write_phy(card->netdev, phy->mii_id,
+ MII_BMCR, bmcr);
+ }
+}
+
/**
* spider_net_rx_irq_off - switch off rx irq on this spider card
* @card: device structure
@@ -1244,6 +1312,29 @@
}
/**
+ * spider_net_link_reset
+ * @netdev: net device structure
+ *
+ */
+static void
+spider_net_link_reset(struct net_device *netdev)
+{
+
+ struct spider_net_card *card = netdev_priv(netdev);
+
+ del_timer_sync(&card->aneg_timer);
+
+ spider_net_write_reg(card, SPIDER_NET_GMACST,
+ spider_net_read_reg(card, SPIDER_NET_GMACST));
+ spider_net_write_reg(card, SPIDER_NET_GMACINTEN, 0);
+
+ mii_phy_probe(&card->phy, card->phy.mii_id);
+ spider_net_setup_forced(card, SPEED_1000, DUPLEX_FULL);
+ mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
+
+}
+
+/**
* spider_net_handle_error_irq - handles errors raised by an interrupt
* @card: card structure
* @status_reg: interrupt status register 0 (GHIINT0STS)
@@ -1496,6 +1587,9 @@
if (status_reg & SPIDER_NET_TXINT)
netif_rx_schedule(netdev);
+ if (status_reg & SPIDER_NET_LINKINT)
+ spider_net_link_reset(netdev);
+
if (status_reg & SPIDER_NET_ERRINT )
spider_net_handle_error_irq(card, status_reg);
@@ -1620,8 +1714,6 @@
spider_net_write_reg(card, SPIDER_NET_GMACLENLMT,
SPIDER_NET_LENLMT_VALUE);
- spider_net_write_reg(card, SPIDER_NET_GMACMODE,
- SPIDER_NET_MACMODE_VALUE);
spider_net_write_reg(card, SPIDER_NET_GMACOPEMD,
SPIDER_NET_OPMODE_VALUE);
@@ -1653,6 +1745,9 @@
struct spider_net_descr *descr;
int result;
+ spider_net_setup_forced(card, SPEED_1000, DUPLEX_FULL);
+ mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
+
result = spider_net_init_chain(card, &card->tx_chain);
if (result)
goto alloc_tx_failed;
@@ -1697,17 +1792,79 @@
alloc_rx_failed:
spider_net_free_chain(card, &card->tx_chain);
alloc_tx_failed:
+ del_timer_sync(&card->aneg_timer);
return result;
}
/**
+ * spider_net_link_phy
+ * @data: used for pointer to card structure
+ *
+ */
+static void spider_net_link_phy(unsigned long data)
+{
+ struct spider_net_card *card = (struct spider_net_card *)data;
+ struct mii_phy *phy = &card->phy;
+
+ if (card->aneg_count > 5) {
+ /* timeout */
+ card->aneg_count = 0;
+ if (card->forced)
+ card->is1000 = 1;
+ else if (card->is1000)
+ card->is1000 = 0;
+ else {
+ spider_net_setup_forced(card, SPEED_1000, DUPLEX_FULL);
+ mod_timer(&card->aneg_timer,
+ jiffies + SPIDER_NET_ANEG_TIMER);
+ return;
+ }
+ goto re_setup;
+ }
+
+ if (!(phy->def->ops->poll_link(phy))) {
+ card->aneg_count++;
+ mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
+ return;
+ }
+
+ phy->def->ops->read_link(phy);
+
+ if (!card->forced) {
+ if (phy->speed == 1000 && !(card->is1000)) {
+ card->is1000 = 1;
+ goto re_setup;
+ } else if (phy->speed != 1000 && card->is1000) {
+ card->is1000 = 0;
+ goto re_setup;
+ }
+ }
+
+ spider_net_write_reg(card, SPIDER_NET_GMACST,
+ spider_net_read_reg(card, SPIDER_NET_GMACST));
+ spider_net_write_reg(card, SPIDER_NET_GMACINTEN, 0x4);
+
+ card->aneg_count = 0;
+
+ pr_info("Found %s with %i Mbps, %s-duplex.\n",
+ phy->def->name, phy->speed, phy->duplex==1 ? "Full" : "Half");
+
+ return;
+
+re_setup:
+ mii_phy_probe(phy, phy->mii_id);
+ spider_net_setup_aneg(card);
+ card->aneg_count = 0;
+ mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
+}
+
+/**
* spider_net_setup_phy - setup PHY
* @card: card structure
*
* returns 0 on success, <0 on failure
*
- * spider_net_setup_phy is used as part of spider_net_probe. Sets
- * the PHY to 1000 Mbps
+ * spider_net_setup_phy is used as part of spider_net_probe.
**/
static int
spider_net_setup_phy(struct spider_net_card *card)
@@ -1718,21 +1875,19 @@
SPIDER_NET_DMASEL_VALUE);
spider_net_write_reg(card, SPIDER_NET_GPCCTRL,
SPIDER_NET_PHY_CTRL_VALUE);
- phy->mii_id = 1;
+
phy->dev = card->netdev;
phy->mdio_read = spider_net_read_phy;
phy->mdio_write = spider_net_write_phy;
- mii_phy_probe(phy, phy->mii_id);
-
- if (phy->def->ops->setup_forced)
- phy->def->ops->setup_forced(phy, SPEED_1000, DUPLEX_FULL);
-
- phy->def->ops->enable_fiber(phy);
-
- phy->def->ops->read_link(phy);
- pr_info("Found %s with %i Mbps, %s-duplex.\n", phy->def->name,
- phy->speed, phy->duplex==1 ? "Full" : "Half");
+ for (phy->mii_id = 1; phy->mii_id <= 31; phy->mii_id++) {
+ unsigned short id;
+ id = spider_net_read_phy(card->netdev, phy->mii_id, MII_BMSR);
+ if (id != 0x0000 && id != 0xffff) {
+ mii_phy_probe(phy, phy->mii_id);
+ break;
+ }
+ }
return 0;
}
@@ -1904,11 +2059,13 @@
netif_carrier_off(netdev);
netif_stop_queue(netdev);
del_timer_sync(&card->tx_timer);
+ del_timer_sync(&card->aneg_timer);
/* disable/mask all interrupts */
spider_net_write_reg(card, SPIDER_NET_GHIINT0MSK, 0);
spider_net_write_reg(card, SPIDER_NET_GHIINT1MSK, 0);
spider_net_write_reg(card, SPIDER_NET_GHIINT2MSK, 0);
+ spider_net_write_reg(card, SPIDER_NET_GMACINTEN, 0);
/* free_irq(netdev->irq, netdev);*/
free_irq(to_pci_dev(netdev->class_dev.dev)->irq, netdev);
@@ -2048,6 +2205,12 @@
card->tx_timer.data = (unsigned long) card;
netdev->irq = card->pdev->irq;
+ card->is1000 = 1;
+ card->aneg_count = 0;
+ init_timer(&card->aneg_timer);
+ card->aneg_timer.function = spider_net_link_phy;
+ card->aneg_timer.data = (unsigned long) card;
+
card->options.rx_csum = SPIDER_NET_RX_CSUM_DEFAULT;
card->tx_chain.num_desc = tx_descriptors;
-
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