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dm: eth: Add basic driver model support to Ethernet stack

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First just add support for MAC drivers.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Joe Hershberger
2015-03-22 17:09:10 -05:00
committed by Simon Glass
parent 85848f0377
commit 05c3e68f85
6 changed files with 410 additions and 6 deletions
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52
include/net.h
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@@ -78,6 +78,57 @@ enum eth_state_t {
ETH_STATE_ACTIVE
};
#ifdef CONFIG_DM_ETH
/**
* struct eth_pdata - Platform data for Ethernet MAC controllers
*
* @iobase: The base address of the hardware registers
* @enetaddr: The Ethernet MAC address that is loaded from EEPROM or env
*/
struct eth_pdata {
phys_addr_t iobase;
unsigned char enetaddr[6];
};
/**
* struct eth_ops - functions of Ethernet MAC controllers
*
* start: Prepare the hardware to send and receive packets
* send: Send the bytes passed in "packet" as a packet on the wire
* recv: Check if the hardware received a packet. Call the network stack if so
* stop: Stop the hardware from looking for packets - may be called even if
* state == PASSIVE
* mcast: Join or leave a multicast group (for TFTP) - optional
* write_hwaddr: Write a MAC address to the hardware (used to pass it to Linux
* on some platforms like ARM). This function expects the
* eth_pdata::enetaddr field to be populated - optional
* read_rom_hwaddr: Some devices have a backup of the MAC address stored in a
* ROM on the board. This is how the driver should expose it
* to the network stack. This function should fill in the
* eth_pdata::enetaddr field - optional
*/
struct eth_ops {
int (*start)(struct udevice *dev);
int (*send)(struct udevice *dev, void *packet, int length);
int (*recv)(struct udevice *dev);
void (*stop)(struct udevice *dev);
#ifdef CONFIG_MCAST_TFTP
int (*mcast)(struct udevice *dev, const u8 *enetaddr, int join);
#endif
int (*write_hwaddr)(struct udevice *dev);
int (*read_rom_hwaddr)(struct udevice *dev);
};
#define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops)
struct udevice *eth_get_dev(void); /* get the current device */
unsigned char *eth_get_ethaddr(void); /* get the current device MAC */
/* Used only when NetConsole is enabled */
int eth_init_state_only(void); /* Set active state */
void eth_halt_state_only(void); /* Set passive state */
#endif
#ifndef CONFIG_DM_ETH
struct eth_device {
char name[16];
unsigned char enetaddr[6];
@@ -144,6 +195,7 @@ int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
int eth_number);
int usb_eth_initialize(bd_t *bi);
#endif
int eth_initialize(void); /* Initialize network subsystem */
void eth_try_another(int first_restart); /* Change the device */