diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/phy/et131x.c | 79 | ||||
| -rw-r--r-- | sys/include/dev/phy/et131xregs.h | 8 |
2 files changed, 85 insertions, 2 deletions
diff --git a/sys/dev/phy/et131x.c b/sys/dev/phy/et131x.c index bd99eae..f8a8ed5 100644 --- a/sys/dev/phy/et131x.c +++ b/sys/dev/phy/et131x.c @@ -43,6 +43,7 @@ #include <dev/pci/pciregs.h> #include <dev/phy/et131xregs.h> #include <dev/timer.h> +#include <net/if_var.h> #define VENDOR_ID 0x11C1 /* Agere */ #define DEVICE_ID 0xED00 @@ -50,6 +51,10 @@ #define pr_trace(fmt, ...) kprintf("et131x: " fmt, ##__VA_ARGS__) #define pr_error(...) pr_trace(__VA_ARGS__) +/* Helpful constants */ +#define ETHERFRAME_LEN 1518 /* Length of ethernet frame */ +#define ETHER_FCS_LEN 4 /* Length of frame check seq */ + struct netcard { struct et131x_iospace *io; }; @@ -190,6 +195,78 @@ et131x_blink(struct netcard *card, uint32_t count, uint16_t delay) } } +/* + * Initialize the MAC into a functional + * state. + * + * @io: Register space. + */ +static void +et131x_mac_init(struct netcard *card) +{ + struct et131x_iospace *io = card->io; + struct mac_regs *mac = &io->mac; + struct netif_addr addr; + uint32_t ipg_tmp, tmp; + + /* + * Okay so we need to reset the card so it doesn't + * do undefined bullshit. God forbid we get undefined + * behaviour without having a fucking official datasheet. + * Most would end themselves right then and there. + * + * Now, after we've done that, we must ensure that any + * packets larger than ETHERFRAME_LEN are truncated by + * the MAC. Again, something like an internal buffer + * overrun during TX/RX would be quite fucking horrible. + * + * We also want to clear the MAC interface control and MII + * clock to ensure it is in a known state. + */ + et131x_soft_reset(card); + mmio_write32(&mac->max_fm_len, ETHERFRAME_LEN); + mmio_write32(&mac->if_ctrl, 0); + mmio_write32(&mac->mii_mgmt_cfg, MAC_MIIMGMT_CLK_RST); + + /* + * Set up half duplex config + * + * - BEB trunc (0xA) + * - Excess defer + * - Re-transmit (0xF) + * - Collision window + */ + mmio_write32(&mac->hfdp, 0x00A1F037); + + /* + * Setup the MAC interpacket gap register + * + * - IPG1 (0x38) + * - IPG2 (0x58) + * - B2B (0x60) + */ + ipg_tmp = ((0x50 << 8) | 0x38005860); + mmio_write32(&mac->ipg, ipg_tmp); + + /* MAC address dword 0 */ + tmp = pci_readl(dev, PCI_MAC_ADDRESS); + addr.data[0] = tmp & 0xFF; + addr.data[1] = (tmp >> 8) & 0xFF; + addr.data[2] = (tmp >> 16) & 0xFF; + addr.data[3] = (tmp >> 24) & 0xFF; + + /* MAC address word 1 */ + tmp = pci_readl(dev, PCI_MAC_ADDRESS + 4); + addr.data[4] = tmp & 0xFF; + addr.data[5] = (tmp >> 8) & 0xFF; + + /* Print out the MAC address */ + pr_trace("MAC address: %x:%x:%x:%x:%x:%x\n", + (uint64_t)addr.data[0], (uint64_t)addr.data[1], + (uint64_t)addr.data[2], (uint64_t)addr.data[3], + (uint64_t)addr.data[4], (uint64_t)addr.data[5]); +} + static int et131x_init(void) { @@ -224,7 +301,7 @@ et131x_init(void) } et131x_init_pci(); - et131x_soft_reset(&g_card); + et131x_mac_init(&g_card); et131x_blink(&g_card, 4, 150); return 0; } diff --git a/sys/include/dev/phy/et131xregs.h b/sys/include/dev/phy/et131xregs.h index 0e05c94..1f8bfcb 100644 --- a/sys/include/dev/phy/et131xregs.h +++ b/sys/include/dev/phy/et131xregs.h @@ -225,9 +225,16 @@ struct mac_regs { #define MAC_MGMT_BUSY 0x00000001 #define MAC_MGMT_WAIT 0x00000005 +/* MAC management config values */ +#define MAC_MIIMGMT_CLK_RST 0x00007 + /* LED register defines */ #define PHY_LED2 0x1C +/* PCI config space offsets */ +#define PCI_EEPROM_STATUS 0xB2 +#define PCI_MAC_ADDRESS 0xA4 + /* * LED control register 2 values */ @@ -247,7 +254,6 @@ struct mac_regs { #define LED_TXRX_SHIFT 8 #define LED_LINK_SHIFT 12 - struct et131x_iospace { #define _IO_PAD(NAME, REGSET) uint8_t NAME[4096 - sizeof(struct REGSET)] struct global_regs global; |