config AMD_XGBE
tristate "AMD 10GbE Ethernet driver"
- depends on OF_NET && HAS_IOMEM
+ depends on (OF_NET || ACPI) && HAS_IOMEM
select PHYLIB
select AMD_XGBE_PHY
select BITREVERSE
DBGPR("-->xgbe_usec_to_riwt\n");
- rate = clk_get_rate(pdata->sysclk);
+ rate = pdata->sysclk_rate;
/*
* Convert the input usec value to the watchdog timer value. Each
DBGPR("-->xgbe_riwt_to_usec\n");
- rate = clk_get_rate(pdata->sysclk);
+ rate = pdata->sysclk_rate;
/*
* Convert the input watchdog timer value to the usec value. Each
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_net.h>
+#include <linux/of_address.h>
#include <linux/clk.h>
+#include <linux/property.h>
+#include <linux/acpi.h>
#include "xgbe.h"
#include "xgbe-common.h"
xgbe_init_function_ptrs_desc(&pdata->desc_if);
}
+#ifdef CONFIG_ACPI
+static int xgbe_acpi_support(struct xgbe_prv_data *pdata)
+{
+ struct acpi_device *adev = pdata->adev;
+ struct device *dev = pdata->dev;
+ u32 property;
+ acpi_handle handle;
+ acpi_status status;
+ unsigned long long data;
+ int cca;
+ int ret;
+
+ /* Obtain the system clock setting */
+ ret = device_property_read_u32(dev, XGBE_ACPI_DMA_FREQ, &property);
+ if (ret) {
+ dev_err(dev, "unable to obtain %s property\n",
+ XGBE_ACPI_DMA_FREQ);
+ return ret;
+ }
+ pdata->sysclk_rate = property;
+
+ /* Obtain the PTP clock setting */
+ ret = device_property_read_u32(dev, XGBE_ACPI_PTP_FREQ, &property);
+ if (ret) {
+ dev_err(dev, "unable to obtain %s property\n",
+ XGBE_ACPI_PTP_FREQ);
+ return ret;
+ }
+ pdata->ptpclk_rate = property;
+
+ /* Retrieve the device cache coherency value */
+ handle = adev->handle;
+ do {
+ status = acpi_evaluate_integer(handle, "_CCA", NULL, &data);
+ if (!ACPI_FAILURE(status)) {
+ cca = data;
+ break;
+ }
+
+ status = acpi_get_parent(handle, &handle);
+ } while (!ACPI_FAILURE(status));
+
+ if (ACPI_FAILURE(status)) {
+ dev_err(dev, "error obtaining acpi coherency value\n");
+ return -EINVAL;
+ }
+ pdata->coherent = !!cca;
+
+ return 0;
+}
+#else /* CONFIG_ACPI */
+static int xgbe_acpi_support(struct xgbe_prv_data *pdata)
+{
+ return -EINVAL;
+}
+#endif /* CONFIG_ACPI */
+
+#ifdef CONFIG_OF
+static int xgbe_of_support(struct xgbe_prv_data *pdata)
+{
+ struct device *dev = pdata->dev;
+
+ /* Obtain the system clock setting */
+ pdata->sysclk = devm_clk_get(dev, XGBE_DMA_CLOCK);
+ if (IS_ERR(pdata->sysclk)) {
+ dev_err(dev, "dma devm_clk_get failed\n");
+ return PTR_ERR(pdata->sysclk);
+ }
+ pdata->sysclk_rate = clk_get_rate(pdata->sysclk);
+
+ /* Obtain the PTP clock setting */
+ pdata->ptpclk = devm_clk_get(dev, XGBE_PTP_CLOCK);
+ if (IS_ERR(pdata->ptpclk)) {
+ dev_err(dev, "ptp devm_clk_get failed\n");
+ return PTR_ERR(pdata->ptpclk);
+ }
+ pdata->ptpclk_rate = clk_get_rate(pdata->ptpclk);
+
+ /* Retrieve the device cache coherency value */
+ pdata->coherent = of_dma_is_coherent(dev->of_node);
+
+ return 0;
+}
+#else /* CONFIG_OF */
+static int xgbe_of_support(struct xgbe_prv_data *pdata)
+{
+ return -EINVAL;
+}
+#endif /*CONFIG_OF */
+
static int xgbe_probe(struct platform_device *pdev)
{
struct xgbe_prv_data *pdata;
struct net_device *netdev;
struct device *dev = &pdev->dev;
struct resource *res;
- const u8 *mac_addr;
+ const char *phy_mode;
unsigned int i;
int ret;
pdata = netdev_priv(netdev);
pdata->netdev = netdev;
pdata->pdev = pdev;
+ pdata->adev = ACPI_COMPANION(dev);
pdata->dev = dev;
platform_set_drvdata(pdev, netdev);
mutex_init(&pdata->rss_mutex);
spin_lock_init(&pdata->tstamp_lock);
+ /* Check if we should use ACPI or DT */
+ pdata->use_acpi = (!pdata->adev || acpi_disabled) ? 0 : 1;
+
/* Set and validate the number of descriptors for a ring */
BUILD_BUG_ON_NOT_POWER_OF_2(XGBE_TX_DESC_CNT);
pdata->tx_desc_count = XGBE_TX_DESC_CNT;
goto err_io;
}
- /* Obtain the system clock setting */
- pdata->sysclk = devm_clk_get(dev, XGBE_DMA_CLOCK);
- if (IS_ERR(pdata->sysclk)) {
- dev_err(dev, "dma devm_clk_get failed\n");
- ret = PTR_ERR(pdata->sysclk);
- goto err_io;
- }
-
- /* Obtain the PTP clock setting */
- pdata->ptpclk = devm_clk_get(dev, XGBE_PTP_CLOCK);
- if (IS_ERR(pdata->ptpclk)) {
- dev_err(dev, "ptp devm_clk_get failed\n");
- ret = PTR_ERR(pdata->ptpclk);
- goto err_io;
- }
-
/* Obtain the mmio areas for the device */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pdata->xgmac_regs = devm_ioremap_resource(dev, res);
}
DBGPR(" xpcs_regs = %p\n", pdata->xpcs_regs);
- /* Set the DMA mask */
- if (!dev->dma_mask)
- dev->dma_mask = &dev->coherent_dma_mask;
- ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40));
- if (ret) {
- dev_err(dev, "dma_set_mask_and_coherent failed\n");
+ /* Retrieve the MAC address */
+ ret = device_property_read_u8_array(dev, XGBE_MAC_ADDR_PROPERTY,
+ pdata->mac_addr,
+ sizeof(pdata->mac_addr));
+ if (ret || !is_valid_ether_addr(pdata->mac_addr)) {
+ dev_err(dev, "invalid %s property\n", XGBE_MAC_ADDR_PROPERTY);
+ if (!ret)
+ ret = -EINVAL;
goto err_io;
}
- if (of_property_read_bool(dev->of_node, "dma-coherent")) {
+ /* Retrieve the PHY mode - it must be "xgmii" */
+ ret = device_property_read_string(dev, XGBE_PHY_MODE_PROPERTY,
+ &phy_mode);
+ if (ret || strcmp(phy_mode, phy_modes(PHY_INTERFACE_MODE_XGMII))) {
+ dev_err(dev, "invalid %s property\n", XGBE_PHY_MODE_PROPERTY);
+ if (!ret)
+ ret = -EINVAL;
+ goto err_io;
+ }
+ pdata->phy_mode = PHY_INTERFACE_MODE_XGMII;
+
+ /* Check for per channel interrupt support */
+ if (device_property_present(dev, XGBE_DMA_IRQS_PROPERTY))
+ pdata->per_channel_irq = 1;
+
+ /* Obtain device settings unique to ACPI/OF */
+ if (pdata->use_acpi)
+ ret = xgbe_acpi_support(pdata);
+ else
+ ret = xgbe_of_support(pdata);
+ if (ret)
+ goto err_io;
+
+ /* Set the DMA coherency values */
+ if (pdata->coherent) {
pdata->axdomain = XGBE_DMA_OS_AXDOMAIN;
pdata->arcache = XGBE_DMA_OS_ARCACHE;
pdata->awcache = XGBE_DMA_OS_AWCACHE;
pdata->awcache = XGBE_DMA_SYS_AWCACHE;
}
- /* Check for per channel interrupt support */
- if (of_property_read_bool(dev->of_node, XGBE_DMA_IRQS))
- pdata->per_channel_irq = 1;
+ /* Set the DMA mask */
+ if (!dev->dma_mask)
+ dev->dma_mask = &dev->coherent_dma_mask;
+ ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40));
+ if (ret) {
+ dev_err(dev, "dma_set_mask_and_coherent failed\n");
+ goto err_io;
+ }
+ /* Get the device interrupt */
ret = platform_get_irq(pdev, 0);
if (ret < 0) {
dev_err(dev, "platform_get_irq 0 failed\n");
netdev->irq = pdata->dev_irq;
netdev->base_addr = (unsigned long)pdata->xgmac_regs;
+ memcpy(netdev->dev_addr, pdata->mac_addr, netdev->addr_len);
/* Set all the function pointers */
xgbe_init_all_fptrs(pdata);
/* Populate the hardware features */
xgbe_get_all_hw_features(pdata);
- /* Retrieve the MAC address */
- mac_addr = of_get_mac_address(dev->of_node);
- if (!mac_addr) {
- dev_err(dev, "invalid mac address for this device\n");
- ret = -EINVAL;
- goto err_io;
- }
- memcpy(netdev->dev_addr, mac_addr, netdev->addr_len);
-
- /* Retrieve the PHY mode - it must be "xgmii" */
- pdata->phy_mode = of_get_phy_mode(dev->of_node);
- if (pdata->phy_mode != PHY_INTERFACE_MODE_XGMII) {
- dev_err(dev, "invalid phy-mode specified for this device\n");
- ret = -EINVAL;
- goto err_io;
- }
-
/* Set default configuration data */
xgbe_default_config(pdata);
}
#endif /* CONFIG_PM */
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id xgbe_acpi_match[] = {
+ { "AMDI8001", 0 },
+ {},
+};
+
+MODULE_DEVICE_TABLE(acpi, xgbe_acpi_match);
+#endif
+
+#ifdef CONFIG_OF
static const struct of_device_id xgbe_of_match[] = {
{ .compatible = "amd,xgbe-seattle-v1a", },
{},
};
MODULE_DEVICE_TABLE(of, xgbe_of_match);
+#endif
+
static SIMPLE_DEV_PM_OPS(xgbe_pm_ops, xgbe_suspend, xgbe_resume);
static struct platform_driver xgbe_driver = {
.driver = {
.name = "amd-xgbe",
+#ifdef CONFIG_ACPI
+ .acpi_match_table = xgbe_acpi_match,
+#endif
+#ifdef CONFIG_OF
.of_match_table = xgbe_of_match,
+#endif
.pm = &xgbe_pm_ops,
},
.probe = xgbe_probe,
int xgbe_mdio_register(struct xgbe_prv_data *pdata)
{
- struct device_node *phy_node;
struct mii_bus *mii;
struct phy_device *phydev;
int ret = 0;
DBGPR("-->xgbe_mdio_register\n");
- /* Retrieve the phy-handle */
- phy_node = of_parse_phandle(pdata->dev->of_node, "phy-handle", 0);
- if (!phy_node) {
- dev_err(pdata->dev, "unable to parse phy-handle\n");
- return -EINVAL;
- }
-
mii = mdiobus_alloc();
if (!mii) {
dev_err(pdata->dev, "mdiobus_alloc failed\n");
- ret = -ENOMEM;
- goto err_node_get;
+ return -ENOMEM;
}
/* Register on the MDIO bus (don't probe any PHYs) */
request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT,
MDIO_ID_ARGS(phydev->c45_ids.device_ids[MDIO_MMD_PCS]));
- of_node_get(phy_node);
- phydev->dev.of_node = phy_node;
ret = phy_device_register(phydev);
if (ret) {
dev_err(pdata->dev, "phy_device_register failed\n");
- of_node_put(phy_node);
goto err_phy_device;
}
if (!phydev->dev.driver) {
pdata->phydev = phydev;
- of_node_put(phy_node);
-
DBGPHY_REGS(pdata);
DBGPR("<--xgbe_mdio_register\n");
err_mdiobus_alloc:
mdiobus_free(mii);
-err_node_get:
- of_node_put(phy_node);
-
return ret;
}
snprintf(info->name, sizeof(info->name), "%s",
netdev_name(pdata->netdev));
info->owner = THIS_MODULE;
- info->max_adj = clk_get_rate(pdata->ptpclk);
+ info->max_adj = pdata->ptpclk_rate;
info->adjfreq = xgbe_adjfreq;
info->adjtime = xgbe_adjtime;
info->gettime = xgbe_gettime;
*/
dividend = 50000000;
dividend <<= 32;
- pdata->tstamp_addend = div_u64(dividend, clk_get_rate(pdata->ptpclk));
+ pdata->tstamp_addend = div_u64(dividend, pdata->ptpclk_rate);
/* Setup the timecounter */
cc->read = xgbe_cc_read;
#define XGBE_PHY_NAME "amd_xgbe_phy"
#define XGBE_PRTAD 0
+/* Common property names */
+#define XGBE_MAC_ADDR_PROPERTY "mac-address"
+#define XGBE_PHY_MODE_PROPERTY "phy-mode"
+#define XGBE_DMA_IRQS_PROPERTY "amd,per-channel-interrupt"
+
/* Device-tree clock names */
#define XGBE_DMA_CLOCK "dma_clk"
#define XGBE_PTP_CLOCK "ptp_clk"
-#define XGBE_DMA_IRQS "amd,per-channel-interrupt"
+
+/* ACPI property names */
+#define XGBE_ACPI_DMA_FREQ "amd,dma-freq"
+#define XGBE_ACPI_PTP_FREQ "amd,ptp-freq"
/* Timestamp support - values based on 50MHz PTP clock
* 50MHz => 20 nsec
struct xgbe_prv_data {
struct net_device *netdev;
struct platform_device *pdev;
+ struct acpi_device *adev;
struct device *dev;
+ /* ACPI or DT flag */
+ unsigned int use_acpi;
+
/* XGMAC/XPCS related mmio registers */
void __iomem *xgmac_regs; /* XGMAC CSRs */
void __iomem *xpcs_regs; /* XPCS MMD registers */
struct xgbe_desc_if desc_if;
/* AXI DMA settings */
+ unsigned int coherent;
unsigned int axdomain;
unsigned int arcache;
unsigned int awcache;
unsigned int phy_rx_pause;
/* Netdev related settings */
+ unsigned char mac_addr[ETH_ALEN];
netdev_features_t netdev_features;
struct napi_struct napi;
struct xgbe_mmc_stats mmc_stats;
/* Device clocks */
struct clk *sysclk;
+ unsigned long sysclk_rate;
struct clk *ptpclk;
+ unsigned long ptpclk_rate;
/* Timestamp support */
spinlock_t tstamp_lock;
config AMD_XGBE_PHY
tristate "Driver for the AMD 10GbE (amd-xgbe) PHYs"
- depends on OF && HAS_IOMEM
+ depends on (OF || ACPI) && HAS_IOMEM
---help---
Currently supports the AMD 10GbE PHY
#include <linux/of_device.h>
#include <linux/uaccess.h>
#include <linux/bitops.h>
+#include <linux/property.h>
+#include <linux/acpi.h>
MODULE_AUTHOR("Tom Lendacky <thomas.lendacky@amd.com>");
MODULE_LICENSE("Dual BSD/GPL");
};
enum amd_xgbe_phy_speedset {
- AMD_XGBE_PHY_SPEEDSET_1000_10000,
+ AMD_XGBE_PHY_SPEEDSET_1000_10000 = 0,
AMD_XGBE_PHY_SPEEDSET_2500_10000,
};
struct amd_xgbe_phy_priv {
struct platform_device *pdev;
+ struct acpi_device *adev;
struct device *dev;
struct phy_device *phydev;
return 0;
}
+static unsigned int amd_xgbe_phy_resource_count(struct platform_device *pdev,
+ unsigned int type)
+{
+ unsigned int count;
+ int i;
+
+ for (i = 0, count = 0; i < pdev->num_resources; i++) {
+ struct resource *r = &pdev->resource[i];
+
+ if (type == resource_type(r))
+ count++;
+ }
+
+ return count;
+}
+
static int amd_xgbe_phy_probe(struct phy_device *phydev)
{
struct amd_xgbe_phy_priv *priv;
- struct platform_device *pdev;
- struct device *dev;
- const __be32 *property;
- unsigned int speed_set;
+ struct platform_device *phy_pdev;
+ struct device *dev, *phy_dev;
+ unsigned int phy_resnum, phy_irqnum;
int ret;
- if (!phydev->dev.of_node)
+ if (!phydev->bus || !phydev->bus->parent)
return -EINVAL;
- pdev = of_find_device_by_node(phydev->dev.of_node);
- if (!pdev)
- return -EINVAL;
- dev = &pdev->dev;
+ dev = phydev->bus->parent;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
- if (!priv) {
- ret = -ENOMEM;
- goto err_pdev;
- }
+ if (!priv)
+ return -ENOMEM;
- priv->pdev = pdev;
+ priv->pdev = to_platform_device(dev);
+ priv->adev = ACPI_COMPANION(dev);
priv->dev = dev;
priv->phydev = phydev;
mutex_init(&priv->an_mutex);
INIT_WORK(&priv->an_irq_work, amd_xgbe_an_irq_work);
INIT_WORK(&priv->an_work, amd_xgbe_an_state_machine);
+ if (!priv->adev || acpi_disabled) {
+ struct device_node *bus_node;
+ struct device_node *phy_node;
+
+ bus_node = priv->dev->of_node;
+ phy_node = of_parse_phandle(bus_node, "phy-handle", 0);
+ if (!phy_node) {
+ dev_err(dev, "unable to parse phy-handle\n");
+ ret = -EINVAL;
+ goto err_priv;
+ }
+
+ phy_pdev = of_find_device_by_node(phy_node);
+ of_node_put(phy_node);
+
+ if (!phy_pdev) {
+ dev_err(dev, "unable to obtain phy device\n");
+ ret = -EINVAL;
+ goto err_priv;
+ }
+
+ phy_resnum = 0;
+ phy_irqnum = 0;
+ } else {
+ /* In ACPI, the XGBE and PHY resources are the grouped
+ * together with the PHY resources at the end
+ */
+ phy_pdev = priv->pdev;
+ phy_resnum = amd_xgbe_phy_resource_count(phy_pdev,
+ IORESOURCE_MEM) - 3;
+ phy_irqnum = amd_xgbe_phy_resource_count(phy_pdev,
+ IORESOURCE_IRQ) - 1;
+ }
+ phy_dev = &phy_pdev->dev;
+
/* Get the device mmio areas */
- priv->rxtx_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ priv->rxtx_res = platform_get_resource(phy_pdev, IORESOURCE_MEM,
+ phy_resnum++);
priv->rxtx_regs = devm_ioremap_resource(dev, priv->rxtx_res);
if (IS_ERR(priv->rxtx_regs)) {
dev_err(dev, "rxtx ioremap failed\n");
ret = PTR_ERR(priv->rxtx_regs);
- goto err_priv;
+ goto err_put;
}
- priv->sir0_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ priv->sir0_res = platform_get_resource(phy_pdev, IORESOURCE_MEM,
+ phy_resnum++);
priv->sir0_regs = devm_ioremap_resource(dev, priv->sir0_res);
if (IS_ERR(priv->sir0_regs)) {
dev_err(dev, "sir0 ioremap failed\n");
goto err_rxtx;
}
- priv->sir1_res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+ priv->sir1_res = platform_get_resource(phy_pdev, IORESOURCE_MEM,
+ phy_resnum++);
priv->sir1_regs = devm_ioremap_resource(dev, priv->sir1_res);
if (IS_ERR(priv->sir1_regs)) {
dev_err(dev, "sir1 ioremap failed\n");
}
/* Get the auto-negotiation interrupt */
- ret = platform_get_irq(pdev, 0);
+ ret = platform_get_irq(phy_pdev, phy_irqnum);
if (ret < 0) {
dev_err(dev, "platform_get_irq failed\n");
goto err_sir1;
priv->an_irq = ret;
/* Get the device speed set property */
- speed_set = 0;
- property = of_get_property(dev->of_node, XGBE_PHY_SPEEDSET_PROPERTY,
- NULL);
- if (property)
- speed_set = be32_to_cpu(*property);
-
- switch (speed_set) {
- case 0:
- priv->speed_set = AMD_XGBE_PHY_SPEEDSET_1000_10000;
- break;
- case 1:
- priv->speed_set = AMD_XGBE_PHY_SPEEDSET_2500_10000;
+ ret = device_property_read_u32(phy_dev, XGBE_PHY_SPEEDSET_PROPERTY,
+ &priv->speed_set);
+ if (ret) {
+ dev_err(dev, "invalid %s property\n",
+ XGBE_PHY_SPEEDSET_PROPERTY);
+ goto err_sir1;
+ }
+
+ switch (priv->speed_set) {
+ case AMD_XGBE_PHY_SPEEDSET_1000_10000:
+ case AMD_XGBE_PHY_SPEEDSET_2500_10000:
break;
default:
- dev_err(dev, "invalid amd,speed-set property\n");
+ dev_err(dev, "invalid %s property\n",
+ XGBE_PHY_SPEEDSET_PROPERTY);
ret = -EINVAL;
goto err_sir1;
}
phydev->priv = priv;
- of_dev_put(pdev);
+ if (!priv->adev || acpi_disabled)
+ platform_device_put(phy_pdev);
return 0;
devm_release_mem_region(dev, priv->rxtx_res->start,
resource_size(priv->rxtx_res));
+err_put:
+ if (!priv->adev || acpi_disabled)
+ platform_device_put(phy_pdev);
+
err_priv:
devm_kfree(dev, priv);
-err_pdev:
- of_dev_put(pdev);
-
return ret;
}
projects / cascardo / linux.git / commitdiff