On Fri, Aug 07, 2015 at 01:33:10AM +0100, David Daney wrote:
> From: David Daney <david.daney@xxxxxxxxxx>
>
> Find out which PHYs belong to which BGX instance in the ACPI way.
>
> Set the MAC address of the device as provided by ACPI tables. This is
> similar to the implementation for devicetree in
> of_get_mac_address(). The table is searched for the device property
> entries "mac-address", "local-mac-address" and "address" in that
> order. The address is provided in a u64 variable and must contain a
> valid 6 bytes-len mac addr.
>
> Based on code from: Narinder Dhillon <ndhillon@xxxxxxxxxx>
> Tomasz Nowicki <tomasz.nowicki@xxxxxxxxxx>
> Robert Richter <rrichter@xxxxxxxxxx>
>
> Signed-off-by: Tomasz Nowicki <tomasz.nowicki@xxxxxxxxxx>
> Signed-off-by: Robert Richter <rrichter@xxxxxxxxxx>
> Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
> ---
> drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 137 +++++++++++++++++++++-
> 1 file changed, 135 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> index 615b2af..2056583 100644
> --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> @@ -6,6 +6,7 @@
> * as published by the Free Software Foundation.
> */
>
> +#include <linux/acpi.h>
> #include <linux/module.h>
> #include <linux/interrupt.h>
> #include <linux/pci.h>
> @@ -26,7 +27,7 @@
> struct lmac {
> struct bgx *bgx;
> int dmac;
> - unsigned char mac[ETH_ALEN];
> + u8 mac[ETH_ALEN];
> bool link_up;
> int lmacid; /* ID within BGX */
> int lmacid_bd; /* ID on board */
> @@ -835,6 +836,133 @@ static void bgx_get_qlm_mode(struct bgx *bgx)
> }
> }
>
> +#ifdef CONFIG_ACPI
> +
> +static int bgx_match_phy_id(struct device *dev, void *data)
> +{
> + struct phy_device *phydev = to_phy_device(dev);
> + u32 *phy_id = data;
> +
> + if (phydev->addr == *phy_id)
> + return 1;
> +
> + return 0;
> +}
> +
> +static const char * const addr_propnames[] = {
> + "mac-address",
> + "local-mac-address",
> + "address",
> +};
If these are going to be generally necessary, then we should get them
adopted as standardised _DSD properties (ideally just one of them).
[...]
> +static acpi_status bgx_acpi_register_phy(acpi_handle handle,
> + u32 lvl, void *context, void **rv)
> +{
> + struct acpi_reference_args args;
> + const union acpi_object *prop;
> + struct bgx *bgx = context;
> + struct acpi_device *adev;
> + struct device *phy_dev;
> + u32 phy_id;
> +
> + if (acpi_bus_get_device(handle, &adev))
> + goto out;
> +
> + SET_NETDEV_DEV(&bgx->lmac[bgx->lmac_count].netdev, &bgx->pdev->dev);
> +
> + acpi_get_mac_address(adev, bgx->lmac[bgx->lmac_count].mac);
> +
> + bgx->lmac[bgx->lmac_count].lmacid = bgx->lmac_count;
> +
> + if (acpi_dev_get_property_reference(adev, "phy-handle", 0, &args))
> + goto out;
> +
> + if (acpi_dev_get_property(args.adev, "phy-channel", ACPI_TYPE_INTEGER, &prop))
> + goto out;
Likewise for any inter-device properties, so that we can actually handle
them in a generic fashion, and avoid / learn from the mistakes we've
already handled with DT.
Mark.
