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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | // SPDX-License-Identifier: GPL-2.0+ /* * Aurora Innovation, Inc. Copyright 2022. * */ #include <dm.h> #include <efi.h> #include <efi_api.h> #include <malloc.h> #include <net.h> struct efi_net_priv { void *buffer; }; static int efi_net_bind(struct udevice *dev) { struct efi_net_plat *plat = dev_get_plat(dev); struct efi_net_priv *priv = dev_get_priv(dev); efi_status_t status; priv->buffer = malloc(PKTSIZE); status = plat->snp->start(plat->snp); if (status != EFI_SUCCESS) return -ENOENT; return 0; } static int efi_net_init(struct udevice *dev) { struct efi_net_plat *plat = dev_get_plat(dev); efi_status_t status; status = plat->snp->initialize(plat->snp, 0, 0); if (status != EFI_SUCCESS) return -ENOENT; return 0; } static void efi_net_halt(struct udevice *dev) { struct efi_net_plat *plat = dev_get_plat(dev); plat->snp->shutdown(plat->snp); plat->snp->stop(plat->snp); } static int efi_net_send(struct udevice *dev, void *packet, int length) { struct efi_net_plat *plat = dev_get_plat(dev); efi_status_t status; status = plat->snp->transmit(plat->snp, 0, length, packet, NULL, NULL, NULL); if (status != EFI_SUCCESS) return -EINVAL; return 0; } static int efi_net_recv(struct udevice *dev, int flags, uchar **packetp) { struct efi_net_plat *plat = dev_get_plat(dev); struct efi_net_priv *priv = dev_get_priv(dev); efi_status_t status; size_t size = PKTSIZE; status = plat->snp->receive(plat->snp, 0, &size, priv->buffer, NULL, NULL, NULL); if (status == EFI_NOT_READY) return -EAGAIN; else if (status != EFI_SUCCESS) return -EINVAL; *packetp = priv->buffer; return 0; } static int efi_net_read_hwaddr(struct udevice *dev) { struct efi_net_plat *plat = dev_get_plat(dev); memcpy(plat->eth_pdata.enetaddr, (void *)&plat->snp->mode->permanent_address, ARP_HLEN); return 0; } static const struct eth_ops efi_net_ops = { .start = efi_net_init, .stop = efi_net_halt, .send = efi_net_send, .recv = efi_net_recv, .read_rom_hwaddr = efi_net_read_hwaddr, }; U_BOOT_DRIVER(efi_net) = { .name = "efi_net", .id = UCLASS_ETH, .bind = efi_net_bind, .ops = &efi_net_ops, .plat_auto = sizeof(struct efi_net_plat), .priv_auto = sizeof(struct efi_net_priv), }; |