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Merge branch 'stmmac-pci'

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Andy Shevchenko says:

====================
stmmac: Enable Intel Quark SoC X1000 Ethernet support

This is third version of the patch series [1] to bring network card support to
Intel Quark SoC.

The series has been tested on Intel Galileo board.

Changelog v3:
 - rebase on top of recent net-next
 - rework an approach to get the custom configuration
 - rework an approach how to get unique bus_id
 - improve DMI lookup function

[1] http://www.spinics.net/lists/netdev/msg296010.html
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2015-01-27 21:08:13 -08:00
commit ff660f75be
1 changed files with 112 additions and 1 deletions
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113
drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
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@ -24,8 +24,50 @@
*******************************************************************************/
#include <linux/pci.h>
#include <linux/dmi.h>
#include "stmmac.h"
/*
* This struct is used to associate PCI Function of MAC controller on a board,
* discovered via DMI, with the address of PHY connected to the MAC. The
* negative value of the address means that MAC controller is not connected
* with PHY.
*/
struct stmmac_pci_dmi_data {
const char *name;
unsigned int func;
int phy_addr;
};
struct stmmac_pci_info {
struct pci_dev *pdev;
int (*setup)(struct plat_stmmacenet_data *plat,
struct stmmac_pci_info *info);
struct stmmac_pci_dmi_data *dmi;
};
static int stmmac_pci_find_phy_addr(struct stmmac_pci_info *info)
{
const char *name = dmi_get_system_info(DMI_BOARD_NAME);
unsigned int func = PCI_FUNC(info->pdev->devfn);
struct stmmac_pci_dmi_data *dmi;
/*
* Galileo boards with old firmware don't support DMI. We always return
* 1 here, so at least first found MAC controller would be probed.
*/
if (!name)
return 1;
for (dmi = info->dmi; dmi->name && *dmi->name; dmi++) {
if (!strcmp(dmi->name, name) && dmi->func == func)
return dmi->phy_addr;
}
return -ENODEV;
}
static void stmmac_default_data(struct plat_stmmacenet_data *plat)
{
plat->bus_id = 1;
@ -48,6 +90,62 @@ static void stmmac_default_data(struct plat_stmmacenet_data *plat)
plat->unicast_filter_entries = 1;
}
static int quark_default_data(struct plat_stmmacenet_data *plat,
struct stmmac_pci_info *info)
{
struct pci_dev *pdev = info->pdev;
int ret;
/*
* Refuse to load the driver and register net device if MAC controller
* does not connect to any PHY interface.
*/
ret = stmmac_pci_find_phy_addr(info);
if (ret < 0)
return ret;
plat->bus_id = PCI_DEVID(pdev->bus->number, pdev->devfn);
plat->phy_addr = ret;
plat->interface = PHY_INTERFACE_MODE_RMII;
plat->clk_csr = 2;
plat->has_gmac = 1;
plat->force_sf_dma_mode = 1;
plat->mdio_bus_data->phy_reset = NULL;
plat->mdio_bus_data->phy_mask = 0;
plat->dma_cfg->pbl = 16;
plat->dma_cfg->burst_len = DMA_AXI_BLEN_256;
plat->dma_cfg->fixed_burst = 1;
/* Set default value for multicast hash bins */
plat->multicast_filter_bins = HASH_TABLE_SIZE;
/* Set default value for unicast filter entries */
plat->unicast_filter_entries = 1;
return 0;
}
static struct stmmac_pci_dmi_data quark_pci_dmi_data[] = {
{
.name = "Galileo",
.func = 6,
.phy_addr = 1,
},
{
.name = "GalileoGen2",
.func = 6,
.phy_addr = 1,
},
{}
};
static struct stmmac_pci_info quark_pci_info = {
.setup = quark_default_data,
.dmi = quark_pci_dmi_data,
};
/**
* stmmac_pci_probe
*
@ -63,6 +161,7 @@ static void stmmac_default_data(struct plat_stmmacenet_data *plat)
static int stmmac_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
struct stmmac_pci_info *info = (struct stmmac_pci_info *)id->driver_data;
struct plat_stmmacenet_data *plat;
struct stmmac_priv *priv;
int i;
@ -103,7 +202,17 @@ static int stmmac_pci_probe(struct pci_dev *pdev,
pci_set_master(pdev);
stmmac_default_data(plat);
if (info) {
info->pdev = pdev;
if (info->setup) {
ret = info->setup(plat, info);
if (ret)
return ret;
}
} else
stmmac_default_data(plat);
pci_enable_msi(pdev);
priv = stmmac_dvr_probe(&pdev->dev, plat, pcim_iomap_table(pdev)[i]);
if (IS_ERR(priv)) {
@ -155,11 +264,13 @@ static int stmmac_pci_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_pci_suspend, stmmac_pci_resume);
#define STMMAC_VENDOR_ID 0x700
#define STMMAC_QUARK_ID 0x0937
#define STMMAC_DEVICE_ID 0x1108
static const struct pci_device_id stmmac_id_table[] = {
{PCI_DEVICE(STMMAC_VENDOR_ID, STMMAC_DEVICE_ID)},
{PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_MAC)},
{PCI_VDEVICE(INTEL, STMMAC_QUARK_ID), (kernel_ulong_t)&quark_pci_info},
{}
};