You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
392 lines
9.5 KiB
392 lines
9.5 KiB
/*******************************************************************************
|
|
This contains the functions to handle the pci driver.
|
|
|
|
Copyright (C) 2011-2012 Vayavya Labs Pvt Ltd
|
|
|
|
This program is free software; you can redistribute it and/or modify it
|
|
under the terms and conditions of the GNU General Public License,
|
|
version 2, as published by the Free Software Foundation.
|
|
|
|
This program is distributed in the hope 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.
|
|
|
|
The full GNU General Public License is included in this distribution in
|
|
the file called "COPYING".
|
|
|
|
Author: Rayagond Kokatanur <rayagond@vayavyalabs.com>
|
|
Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
|
|
*******************************************************************************/
|
|
|
|
#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_func_data {
|
|
unsigned int func;
|
|
int phy_addr;
|
|
};
|
|
|
|
struct stmmac_pci_dmi_data {
|
|
const struct stmmac_pci_func_data *func;
|
|
size_t nfuncs;
|
|
};
|
|
|
|
struct stmmac_pci_info {
|
|
int (*setup)(struct pci_dev *pdev, struct plat_stmmacenet_data *plat);
|
|
};
|
|
|
|
static int stmmac_pci_find_phy_addr(struct pci_dev *pdev,
|
|
const struct dmi_system_id *dmi_list)
|
|
{
|
|
const struct stmmac_pci_func_data *func_data;
|
|
const struct stmmac_pci_dmi_data *dmi_data;
|
|
const struct dmi_system_id *dmi_id;
|
|
int func = PCI_FUNC(pdev->devfn);
|
|
size_t n;
|
|
|
|
dmi_id = dmi_first_match(dmi_list);
|
|
if (!dmi_id)
|
|
return -ENODEV;
|
|
|
|
dmi_data = dmi_id->driver_data;
|
|
func_data = dmi_data->func;
|
|
|
|
for (n = 0; n < dmi_data->nfuncs; n++, func_data++)
|
|
if (func_data->func == func)
|
|
return func_data->phy_addr;
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
static void common_default_data(struct plat_stmmacenet_data *plat)
|
|
{
|
|
plat->clk_csr = 2; /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
|
|
plat->has_gmac = 1;
|
|
plat->force_sf_dma_mode = 1;
|
|
|
|
plat->mdio_bus_data->phy_reset = NULL;
|
|
plat->mdio_bus_data->phy_mask = 0;
|
|
|
|
/* 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;
|
|
|
|
/* Set the maxmtu to a default of JUMBO_LEN */
|
|
plat->maxmtu = JUMBO_LEN;
|
|
|
|
/* Set default number of RX and TX queues to use */
|
|
plat->tx_queues_to_use = 1;
|
|
plat->rx_queues_to_use = 1;
|
|
|
|
/* Disable Priority config by default */
|
|
plat->tx_queues_cfg[0].use_prio = false;
|
|
plat->rx_queues_cfg[0].use_prio = false;
|
|
|
|
/* Disable RX queues routing by default */
|
|
plat->rx_queues_cfg[0].pkt_route = 0x0;
|
|
}
|
|
|
|
static int stmmac_default_data(struct pci_dev *pdev,
|
|
struct plat_stmmacenet_data *plat)
|
|
{
|
|
/* Set common default data first */
|
|
common_default_data(plat);
|
|
|
|
plat->bus_id = 1;
|
|
plat->phy_addr = 0;
|
|
plat->interface = PHY_INTERFACE_MODE_GMII;
|
|
|
|
plat->dma_cfg->pbl = 32;
|
|
plat->dma_cfg->pblx8 = true;
|
|
/* TODO: AXI */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct stmmac_pci_info stmmac_pci_info = {
|
|
.setup = stmmac_default_data,
|
|
};
|
|
|
|
static const struct stmmac_pci_func_data galileo_stmmac_func_data[] = {
|
|
{
|
|
.func = 6,
|
|
.phy_addr = 1,
|
|
},
|
|
};
|
|
|
|
static const struct stmmac_pci_dmi_data galileo_stmmac_dmi_data = {
|
|
.func = galileo_stmmac_func_data,
|
|
.nfuncs = ARRAY_SIZE(galileo_stmmac_func_data),
|
|
};
|
|
|
|
static const struct stmmac_pci_func_data iot2040_stmmac_func_data[] = {
|
|
{
|
|
.func = 6,
|
|
.phy_addr = 1,
|
|
},
|
|
{
|
|
.func = 7,
|
|
.phy_addr = 1,
|
|
},
|
|
};
|
|
|
|
static const struct stmmac_pci_dmi_data iot2040_stmmac_dmi_data = {
|
|
.func = iot2040_stmmac_func_data,
|
|
.nfuncs = ARRAY_SIZE(iot2040_stmmac_func_data),
|
|
};
|
|
|
|
static const struct dmi_system_id quark_pci_dmi[] = {
|
|
{
|
|
.matches = {
|
|
DMI_EXACT_MATCH(DMI_BOARD_NAME, "Galileo"),
|
|
},
|
|
.driver_data = (void *)&galileo_stmmac_dmi_data,
|
|
},
|
|
{
|
|
.matches = {
|
|
DMI_EXACT_MATCH(DMI_BOARD_NAME, "GalileoGen2"),
|
|
},
|
|
.driver_data = (void *)&galileo_stmmac_dmi_data,
|
|
},
|
|
/*
|
|
* There are 2 types of SIMATIC IOT2000: IOT20202 and IOT2040.
|
|
* The asset tag "6ES7647-0AA00-0YA2" is only for IOT2020 which
|
|
* has only one pci network device while other asset tags are
|
|
* for IOT2040 which has two.
|
|
*/
|
|
{
|
|
.matches = {
|
|
DMI_EXACT_MATCH(DMI_BOARD_NAME, "SIMATIC IOT2000"),
|
|
DMI_EXACT_MATCH(DMI_BOARD_ASSET_TAG,
|
|
"6ES7647-0AA00-0YA2"),
|
|
},
|
|
.driver_data = (void *)&galileo_stmmac_dmi_data,
|
|
},
|
|
{
|
|
.matches = {
|
|
DMI_EXACT_MATCH(DMI_BOARD_NAME, "SIMATIC IOT2000"),
|
|
},
|
|
.driver_data = (void *)&iot2040_stmmac_dmi_data,
|
|
},
|
|
{}
|
|
};
|
|
|
|
static int quark_default_data(struct pci_dev *pdev,
|
|
struct plat_stmmacenet_data *plat)
|
|
{
|
|
int ret;
|
|
|
|
/* Set common default data first */
|
|
common_default_data(plat);
|
|
|
|
/*
|
|
* 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(pdev, quark_pci_dmi);
|
|
if (ret < 0) {
|
|
/* Return error to the caller on DMI enabled boards. */
|
|
if (dmi_get_system_info(DMI_BOARD_NAME))
|
|
return ret;
|
|
|
|
/*
|
|
* Galileo boards with old firmware don't support DMI. We always
|
|
* use 1 here as PHY address, so at least the first found MAC
|
|
* controller would be probed.
|
|
*/
|
|
ret = 1;
|
|
}
|
|
|
|
plat->bus_id = PCI_DEVID(pdev->bus->number, pdev->devfn);
|
|
plat->phy_addr = ret;
|
|
plat->interface = PHY_INTERFACE_MODE_RMII;
|
|
|
|
plat->dma_cfg->pbl = 16;
|
|
plat->dma_cfg->pblx8 = true;
|
|
plat->dma_cfg->fixed_burst = 1;
|
|
/* AXI (TODO) */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct stmmac_pci_info quark_pci_info = {
|
|
.setup = quark_default_data,
|
|
};
|
|
|
|
/**
|
|
* stmmac_pci_probe
|
|
*
|
|
* @pdev: pci device pointer
|
|
* @id: pointer to table of device id/id's.
|
|
*
|
|
* Description: This probing function gets called for all PCI devices which
|
|
* match the ID table and are not "owned" by other driver yet. This function
|
|
* gets passed a "struct pci_dev *" for each device whose entry in the ID table
|
|
* matches the device. The probe functions returns zero when the driver choose
|
|
* to take "ownership" of the device or an error code(-ve no) otherwise.
|
|
*/
|
|
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_resources res;
|
|
int i;
|
|
int ret;
|
|
|
|
plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
|
|
if (!plat)
|
|
return -ENOMEM;
|
|
|
|
plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
|
|
sizeof(*plat->mdio_bus_data),
|
|
GFP_KERNEL);
|
|
if (!plat->mdio_bus_data)
|
|
return -ENOMEM;
|
|
|
|
plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg),
|
|
GFP_KERNEL);
|
|
if (!plat->dma_cfg)
|
|
return -ENOMEM;
|
|
|
|
/* Enable pci device */
|
|
ret = pci_enable_device(pdev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n",
|
|
__func__);
|
|
return ret;
|
|
}
|
|
|
|
/* Get the base address of device */
|
|
for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
|
|
if (pci_resource_len(pdev, i) == 0)
|
|
continue;
|
|
ret = pcim_iomap_regions(pdev, BIT(i), pci_name(pdev));
|
|
if (ret)
|
|
return ret;
|
|
break;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
ret = info->setup(pdev, plat);
|
|
if (ret)
|
|
return ret;
|
|
|
|
pci_enable_msi(pdev);
|
|
|
|
memset(&res, 0, sizeof(res));
|
|
res.addr = pcim_iomap_table(pdev)[i];
|
|
res.wol_irq = pdev->irq;
|
|
res.irq = pdev->irq;
|
|
|
|
return stmmac_dvr_probe(&pdev->dev, plat, &res);
|
|
}
|
|
|
|
/**
|
|
* stmmac_pci_remove
|
|
*
|
|
* @pdev: platform device pointer
|
|
* Description: this function calls the main to free the net resources
|
|
* and releases the PCI resources.
|
|
*/
|
|
static void stmmac_pci_remove(struct pci_dev *pdev)
|
|
{
|
|
int i;
|
|
|
|
stmmac_dvr_remove(&pdev->dev);
|
|
|
|
for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
|
|
if (pci_resource_len(pdev, i) == 0)
|
|
continue;
|
|
pcim_iounmap_regions(pdev, BIT(i));
|
|
break;
|
|
}
|
|
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
static int __maybe_unused stmmac_pci_suspend(struct device *dev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
int ret;
|
|
|
|
ret = stmmac_suspend(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = pci_save_state(pdev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
pci_disable_device(pdev);
|
|
pci_wake_from_d3(pdev, true);
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused stmmac_pci_resume(struct device *dev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
int ret;
|
|
|
|
pci_restore_state(pdev);
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
pci_set_master(pdev);
|
|
|
|
return stmmac_resume(dev);
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_pci_suspend, stmmac_pci_resume);
|
|
|
|
/* synthetic ID, no official vendor */
|
|
#define PCI_VENDOR_ID_STMMAC 0x700
|
|
|
|
#define STMMAC_QUARK_ID 0x0937
|
|
#define STMMAC_DEVICE_ID 0x1108
|
|
|
|
#define STMMAC_DEVICE(vendor_id, dev_id, info) { \
|
|
PCI_VDEVICE(vendor_id, dev_id), \
|
|
.driver_data = (kernel_ulong_t)&info \
|
|
}
|
|
|
|
static const struct pci_device_id stmmac_id_table[] = {
|
|
STMMAC_DEVICE(STMMAC, STMMAC_DEVICE_ID, stmmac_pci_info),
|
|
STMMAC_DEVICE(STMICRO, PCI_DEVICE_ID_STMICRO_MAC, stmmac_pci_info),
|
|
STMMAC_DEVICE(INTEL, STMMAC_QUARK_ID, quark_pci_info),
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, stmmac_id_table);
|
|
|
|
static struct pci_driver stmmac_pci_driver = {
|
|
.name = STMMAC_RESOURCE_NAME,
|
|
.id_table = stmmac_id_table,
|
|
.probe = stmmac_pci_probe,
|
|
.remove = stmmac_pci_remove,
|
|
.driver = {
|
|
.pm = &stmmac_pm_ops,
|
|
},
|
|
};
|
|
|
|
module_pci_driver(stmmac_pci_driver);
|
|
|
|
MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PCI driver");
|
|
MODULE_AUTHOR("Rayagond Kokatanur <rayagond.kokatanur@vayavyalabs.com>");
|
|
MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
|
|
MODULE_LICENSE("GPL");
|
|
|