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-rw-r--r--drivers/net/ethernet/xscale/Kconfig4
-rw-r--r--drivers/net/ethernet/xscale/Makefile6
-rw-r--r--drivers/net/ethernet/xscale/ixp46x_ts.h13
-rw-r--r--drivers/net/ethernet/xscale/ixp4xx_eth.c37
-rw-r--r--drivers/net/ethernet/xscale/ptp_ixp46x.c122
5 files changed, 104 insertions, 78 deletions
diff --git a/drivers/net/ethernet/xscale/Kconfig b/drivers/net/ethernet/xscale/Kconfig
index 468ffe3d1707..0e878fa6e322 100644
--- a/drivers/net/ethernet/xscale/Kconfig
+++ b/drivers/net/ethernet/xscale/Kconfig
@@ -29,9 +29,9 @@ config IXP4XX_ETH
on IXP4xx processor.
config PTP_1588_CLOCK_IXP46X
- tristate "Intel IXP46x as PTP clock"
+ bool "Intel IXP46x as PTP clock"
depends on IXP4XX_ETH
- depends on PTP_1588_CLOCK
+ depends on PTP_1588_CLOCK=y || PTP_1588_CLOCK=IXP4XX_ETH
default y
help
This driver adds support for using the IXP46X as a PTP
diff --git a/drivers/net/ethernet/xscale/Makefile b/drivers/net/ethernet/xscale/Makefile
index 607f91b1e878..e935f2a2979f 100644
--- a/drivers/net/ethernet/xscale/Makefile
+++ b/drivers/net/ethernet/xscale/Makefile
@@ -3,5 +3,9 @@
# Makefile for the Intel XScale IXP device drivers.
#
+# Keep this link order to avoid deferred probing
+ifdef CONFIG_PTP_1588_CLOCK_IXP46X
+obj-$(CONFIG_IXP4XX_ETH) += ptp_ixp46x.o
+endif
+
obj-$(CONFIG_IXP4XX_ETH) += ixp4xx_eth.o
-obj-$(CONFIG_PTP_1588_CLOCK_IXP46X) += ptp_ixp46x.o
diff --git a/drivers/net/ethernet/xscale/ixp46x_ts.h b/drivers/net/ethernet/xscale/ixp46x_ts.h
index d792130e27b0..ee9b93ded20a 100644
--- a/drivers/net/ethernet/xscale/ixp46x_ts.h
+++ b/drivers/net/ethernet/xscale/ixp46x_ts.h
@@ -62,7 +62,16 @@ struct ixp46x_ts_regs {
#define TX_SNAPSHOT_LOCKED (1<<0)
#define RX_SNAPSHOT_LOCKED (1<<1)
-/* The ptp_ixp46x module will set this variable */
-extern int ixp46x_phc_index;
+#if IS_ENABLED(CONFIG_PTP_1588_CLOCK_IXP46X)
+int ixp46x_ptp_find(struct ixp46x_ts_regs *__iomem *regs, int *phc_index);
+#else
+static inline int ixp46x_ptp_find(struct ixp46x_ts_regs *__iomem *regs, int *phc_index)
+{
+ *regs = NULL;
+ *phc_index = -1;
+
+ return -ENODEV;
+}
+#endif
#endif
diff --git a/drivers/net/ethernet/xscale/ixp4xx_eth.c b/drivers/net/ethernet/xscale/ixp4xx_eth.c
index 7ae754eadf22..931494cc1c39 100644
--- a/drivers/net/ethernet/xscale/ixp4xx_eth.c
+++ b/drivers/net/ethernet/xscale/ixp4xx_eth.c
@@ -37,7 +37,6 @@
#include <linux/module.h>
#include <linux/soc/ixp4xx/npe.h>
#include <linux/soc/ixp4xx/qmgr.h>
-#include <mach/hardware.h>
#include <linux/soc/ixp4xx/cpu.h>
#include "ixp46x_ts.h"
@@ -169,13 +168,15 @@ struct eth_regs {
struct port {
struct eth_regs __iomem *regs;
+ struct ixp46x_ts_regs __iomem *timesync_regs;
+ int phc_index;
struct npe *npe;
struct net_device *netdev;
struct napi_struct napi;
struct eth_plat_info *plat;
buffer_t *rx_buff_tab[RX_DESCS], *tx_buff_tab[TX_DESCS];
struct desc *desc_tab; /* coherent */
- u32 desc_tab_phys;
+ dma_addr_t desc_tab_phys;
int id; /* logical port ID */
int speed, duplex;
u8 firmware[4];
@@ -295,7 +296,7 @@ static void ixp_rx_timestamp(struct port *port, struct sk_buff *skb)
ch = PORT2CHANNEL(port);
- regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
+ regs = port->timesync_regs;
val = __raw_readl(&regs->channel[ch].ch_event);
@@ -340,7 +341,7 @@ static void ixp_tx_timestamp(struct port *port, struct sk_buff *skb)
ch = PORT2CHANNEL(port);
- regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
+ regs = port->timesync_regs;
/*
* This really stinks, but we have to poll for the Tx time stamp.
@@ -375,6 +376,7 @@ static int hwtstamp_set(struct net_device *netdev, struct ifreq *ifr)
struct hwtstamp_config cfg;
struct ixp46x_ts_regs *regs;
struct port *port = netdev_priv(netdev);
+ int ret;
int ch;
if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
@@ -383,8 +385,12 @@ static int hwtstamp_set(struct net_device *netdev, struct ifreq *ifr)
if (cfg.flags) /* reserved for future extensions */
return -EINVAL;
+ ret = ixp46x_ptp_find(&port->timesync_regs, &port->phc_index);
+ if (ret)
+ return ret;
+
ch = PORT2CHANNEL(port);
- regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
+ regs = port->timesync_regs;
if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
return -ERANGE;
@@ -850,14 +856,14 @@ static int eth_xmit(struct sk_buff *skb, struct net_device *dev)
bytes = len;
mem = skb->data;
#else
- offset = (int)skb->data & 3; /* keep 32-bit alignment */
+ offset = (uintptr_t)skb->data & 3; /* keep 32-bit alignment */
bytes = ALIGN(offset + len, 4);
if (!(mem = kmalloc(bytes, GFP_ATOMIC))) {
dev_kfree_skb(skb);
dev->stats.tx_dropped++;
return NETDEV_TX_OK;
}
- memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4);
+ memcpy_swab32(mem, (u32 *)((uintptr_t)skb->data & ~3), bytes / 4);
#endif
phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE);
@@ -988,25 +994,27 @@ static void ixp4xx_get_drvinfo(struct net_device *dev,
strlcpy(info->bus_info, "internal", sizeof(info->bus_info));
}
-int ixp46x_phc_index = -1;
-EXPORT_SYMBOL_GPL(ixp46x_phc_index);
-
static int ixp4xx_get_ts_info(struct net_device *dev,
struct ethtool_ts_info *info)
{
- if (!cpu_is_ixp46x()) {
+ struct port *port = netdev_priv(dev);
+
+ if (port->phc_index < 0)
+ ixp46x_ptp_find(&port->timesync_regs, &port->phc_index);
+
+ info->phc_index = port->phc_index;
+
+ if (info->phc_index < 0) {
info->so_timestamping =
SOF_TIMESTAMPING_TX_SOFTWARE |
SOF_TIMESTAMPING_RX_SOFTWARE |
SOF_TIMESTAMPING_SOFTWARE;
- info->phc_index = -1;
return 0;
}
info->so_timestamping =
SOF_TIMESTAMPING_TX_HARDWARE |
SOF_TIMESTAMPING_RX_HARDWARE |
SOF_TIMESTAMPING_RAW_HARDWARE;
- info->phc_index = ixp46x_phc_index;
info->tx_types =
(1 << HWTSTAMP_TX_OFF) |
(1 << HWTSTAMP_TX_ON);
@@ -1357,7 +1365,7 @@ static const struct net_device_ops ixp4xx_netdev_ops = {
.ndo_stop = eth_close,
.ndo_start_xmit = eth_xmit,
.ndo_set_rx_mode = eth_set_mcast_list,
- .ndo_do_ioctl = eth_ioctl,
+ .ndo_eth_ioctl = eth_ioctl,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
};
@@ -1481,6 +1489,7 @@ static int ixp4xx_eth_probe(struct platform_device *pdev)
port = netdev_priv(ndev);
port->netdev = ndev;
port->id = plat->npe;
+ port->phc_index = -1;
/* Get the port resource and remap */
port->regs = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
diff --git a/drivers/net/ethernet/xscale/ptp_ixp46x.c b/drivers/net/ethernet/xscale/ptp_ixp46x.c
index a6fb88fd42f7..ecece21315c3 100644
--- a/drivers/net/ethernet/xscale/ptp_ixp46x.c
+++ b/drivers/net/ethernet/xscale/ptp_ixp46x.c
@@ -5,14 +5,16 @@
* Copyright (C) 2010 OMICRON electronics GmbH
*/
#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
#include <linux/err.h>
-#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/ptp_clock_kernel.h>
+#include <linux/platform_device.h>
#include <linux/soc/ixp4xx/cpu.h>
#include <linux/module.h>
#include <mach/ixp4xx-regs.h>
@@ -21,10 +23,6 @@
#define DRIVER "ptp_ixp46x"
#define N_EXT_TS 2
-#define MASTER_GPIO 8
-#define MASTER_IRQ 25
-#define SLAVE_GPIO 7
-#define SLAVE_IRQ 24
struct ixp_clock {
struct ixp46x_ts_regs *regs;
@@ -32,9 +30,11 @@ struct ixp_clock {
struct ptp_clock_info caps;
int exts0_enabled;
int exts1_enabled;
+ int slave_irq;
+ int master_irq;
};
-DEFINE_SPINLOCK(register_lock);
+static DEFINE_SPINLOCK(register_lock);
/*
* Register access functions
@@ -243,53 +243,38 @@ static const struct ptp_clock_info ptp_ixp_caps = {
static struct ixp_clock ixp_clock;
-static int setup_interrupt(int gpio)
+int ixp46x_ptp_find(struct ixp46x_ts_regs *__iomem *regs, int *phc_index)
{
- int irq;
- int err;
-
- err = gpio_request(gpio, "ixp4-ptp");
- if (err)
- return err;
-
- err = gpio_direction_input(gpio);
- if (err)
- return err;
-
- irq = gpio_to_irq(gpio);
- if (irq < 0)
- return irq;
+ *regs = ixp_clock.regs;
+ *phc_index = ptp_clock_index(ixp_clock.ptp_clock);
- err = irq_set_irq_type(irq, IRQF_TRIGGER_FALLING);
- if (err) {
- pr_err("cannot set trigger type for irq %d\n", irq);
- return err;
- }
-
- err = request_irq(irq, isr, 0, DRIVER, &ixp_clock);
- if (err) {
- pr_err("request_irq failed for irq %d\n", irq);
- return err;
- }
+ if (!ixp_clock.ptp_clock)
+ return -EPROBE_DEFER;
- return irq;
+ return 0;
}
+EXPORT_SYMBOL_GPL(ixp46x_ptp_find);
-static void __exit ptp_ixp_exit(void)
+/* Called from the registered devm action */
+static void ptp_ixp_unregister_action(void *d)
{
- free_irq(MASTER_IRQ, &ixp_clock);
- free_irq(SLAVE_IRQ, &ixp_clock);
- ixp46x_phc_index = -1;
- ptp_clock_unregister(ixp_clock.ptp_clock);
+ struct ptp_clock *ptp_clock = d;
+
+ ptp_clock_unregister(ptp_clock);
+ ixp_clock.ptp_clock = NULL;
}
-static int __init ptp_ixp_init(void)
+static int ptp_ixp_probe(struct platform_device *pdev)
{
- if (!cpu_is_ixp46x())
- return -ENODEV;
+ struct device *dev = &pdev->dev;
+ int ret;
- ixp_clock.regs =
- (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
+ ixp_clock.regs = devm_platform_ioremap_resource(pdev, 0);
+ ixp_clock.master_irq = platform_get_irq(pdev, 0);
+ ixp_clock.slave_irq = platform_get_irq(pdev, 1);
+ if (IS_ERR(ixp_clock.regs) ||
+ !ixp_clock.master_irq || !ixp_clock.slave_irq)
+ return -ENXIO;
ixp_clock.caps = ptp_ixp_caps;
@@ -298,32 +283,51 @@ static int __init ptp_ixp_init(void)
if (IS_ERR(ixp_clock.ptp_clock))
return PTR_ERR(ixp_clock.ptp_clock);
- ixp46x_phc_index = ptp_clock_index(ixp_clock.ptp_clock);
+ ret = devm_add_action_or_reset(dev, ptp_ixp_unregister_action,
+ ixp_clock.ptp_clock);
+ if (ret) {
+ dev_err(dev, "failed to install clock removal handler\n");
+ return ret;
+ }
__raw_writel(DEFAULT_ADDEND, &ixp_clock.regs->addend);
__raw_writel(1, &ixp_clock.regs->trgt_lo);
__raw_writel(0, &ixp_clock.regs->trgt_hi);
__raw_writel(TTIPEND, &ixp_clock.regs->event);
- if (MASTER_IRQ != setup_interrupt(MASTER_GPIO)) {
- pr_err("failed to setup gpio %d as irq\n", MASTER_GPIO);
- goto no_master;
- }
- if (SLAVE_IRQ != setup_interrupt(SLAVE_GPIO)) {
- pr_err("failed to setup gpio %d as irq\n", SLAVE_GPIO);
- goto no_slave;
- }
+ ret = devm_request_irq(dev, ixp_clock.master_irq, isr,
+ 0, DRIVER, &ixp_clock);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "request_irq failed for irq %d\n",
+ ixp_clock.master_irq);
+
+ ret = devm_request_irq(dev, ixp_clock.slave_irq, isr,
+ 0, DRIVER, &ixp_clock);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "request_irq failed for irq %d\n",
+ ixp_clock.slave_irq);
return 0;
-no_slave:
- free_irq(MASTER_IRQ, &ixp_clock);
-no_master:
- ptp_clock_unregister(ixp_clock.ptp_clock);
- return -ENODEV;
}
-module_init(ptp_ixp_init);
-module_exit(ptp_ixp_exit);
+static const struct of_device_id ptp_ixp_match[] = {
+ {
+ .compatible = "intel,ixp46x-ptp-timer",
+ },
+ { },
+};
+
+static struct platform_driver ptp_ixp_driver = {
+ .driver = {
+ .name = "ptp-ixp46x",
+ .of_match_table = ptp_ixp_match,
+ .suppress_bind_attrs = true,
+ },
+ .probe = ptp_ixp_probe,
+};
+module_platform_driver(ptp_ixp_driver);
MODULE_AUTHOR("Richard Cochran <richardcochran@gmail.com>");
MODULE_DESCRIPTION("PTP clock using the IXP46X timer");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-14 08:30:37 +0000