[U-Boot] [PATCH 1/4] phy: Add support for the NC-SI protocol
Samuel Mendoza-Jonas
sam at mendozajonas.com
Thu Jun 6 04:49:47 UTC 2019
This introduces support for the NC-SI protocol, modelled as a phy driver
for other ethernet drivers to consume.
NC-SI (Network Controller Sideband Interface) is a protocol to manage a
sideband connection to a proper network interface, for example a BMC
(Baseboard Management Controller) sharing the NIC of the host system.
Probing and configuration occurs by communicating with the "remote" NIC
via NC-SI control frames (Ethernet header 0x88f8).
This implementation is roughly based on the upstream Linux
implementation[0], with a reduced feature set and an emphasis on getting
a link up as fast as possible rather than probing the full possible
topology of the bus.
The current phy model relies on the network being "up", sending NC-SI
command frames via net_send_packet() and receiving them from the
net_loop() loop (added in a following patch).
The ncsi-pkt.h header[1] is copied from the Linux kernel for consistent
field definitions.
[0]: https://github.com/torvalds/linux/tree/master/net/ncsi
[1]: https://github.com/torvalds/linux/blob/master/net/ncsi/ncsi-pkt.h
Signed-off-by: Samuel Mendoza-Jonas <sam at mendozajonas.com>
---
drivers/net/phy/Kconfig | 4 +
drivers/net/phy/Makefile | 1 +
drivers/net/phy/ncsi.c | 892 +++++++++++++++++++++++++++++++++++++++
include/net.h | 1 +
include/net/ncsi-pkt.h | 415 ++++++++++++++++++
include/net/ncsi.h | 14 +
include/phy.h | 1 +
7 files changed, 1328 insertions(+)
create mode 100644 drivers/net/phy/ncsi.c
create mode 100644 include/net/ncsi-pkt.h
create mode 100644 include/net/ncsi.h
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 3dc0822d9c..f6dde8af1c 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -227,4 +227,8 @@ config PHY_FIXED
on, the link is always up with fixed speed and fixed duplex-setting.
More information: doc/device-tree-bindings/net/fixed-link.txt
+config PHY_NCSI
+ bool "NC-SI based PHY"
+ depends on DM_ETH
+
endif #PHYLIB
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 555da83630..32a8409a85 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -30,3 +30,4 @@ obj-$(CONFIG_PHY_XILINX) += xilinx_phy.o
obj-$(CONFIG_PHY_VITESSE) += vitesse.o
obj-$(CONFIG_PHY_MSCC) += mscc.o
obj-$(CONFIG_PHY_FIXED) += fixed.o
+obj-$(CONFIG_PHY_NCSI) += ncsi.o
diff --git a/drivers/net/phy/ncsi.c b/drivers/net/phy/ncsi.c
new file mode 100644
index 0000000000..b1b717ed5c
--- /dev/null
+++ b/drivers/net/phy/ncsi.c
@@ -0,0 +1,892 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * NC-SI protocol configuration
+ *
+ * Copyright (C) 2019, IBM Corporation.
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <phy.h>
+#include <net/ncsi.h>
+#include <net/ncsi-pkt.h>
+#include <asm/unaligned.h>
+
+#define NCSI_PACKAGE_MAX 8
+#define NCSI_CHANNEL_MAX 31
+
+#define NCSI_PACKAGE_SHIFT 5
+#define NCSI_PACKAGE_INDEX(c) (((c) >> NCSI_PACKAGE_SHIFT) & 0x7)
+#define NCSI_RESERVED_CHANNEL 0x1f
+#define NCSI_CHANNEL_INDEX(c) ((c) & ((1 << NCSI_PACKAGE_SHIFT) - 1))
+#define NCSI_TO_CHANNEL(p, c) (((p) << NCSI_PACKAGE_SHIFT) | (c))
+
+#define NCSI_PKT_REVISION 0x01
+
+#define NCSI_CAP_GENERIC_MASK 0x7f
+#define NCSI_CAP_BC_MASK 0x0f
+#define NCSI_CAP_MC_MASK 0x3f
+#define NCSI_CAP_AEN_MASK 0x07
+#define NCSI_CAP_VLAN_MASK 0x07
+
+static void ncsi_send_ebf(unsigned int np, unsigned int nc);
+static void ncsi_send_ae(unsigned int np, unsigned int nc);
+static void ncsi_send_gls(unsigned int np, unsigned int nc);
+static int ncsi_send_command(unsigned int np, unsigned int nc, unsigned int cmd,
+ uchar *payload, int len, bool wait);
+
+struct ncsi_channel {
+ unsigned int id;
+ bool has_link;
+
+ /* capabilities */
+ u32 cap_generic;
+ u32 cap_bc;
+ u32 cap_mc;
+ u32 cap_buffer;
+ u32 cap_aen;
+ u32 cap_vlan;
+
+ /* version information */
+ struct {
+ u32 version; /* Supported BCD encoded NCSI version */
+ u32 alpha2; /* Supported BCD encoded NCSI version */
+ u8 fw_name[12]; /* Firmware name string */
+ u32 fw_version; /* Firmware version */
+ u16 pci_ids[4]; /* PCI identification */
+ u32 mf_id; /* Manufacture ID */
+ } version;
+
+};
+
+struct ncsi_package {
+ unsigned int id;
+ unsigned int n_channels;
+ struct ncsi_channel *channels;
+};
+
+struct ncsi {
+ enum {
+ NCSI_PROBE_PACKAGE_SP,
+ NCSI_PROBE_PACKAGE_DP,
+ NCSI_PROBE_CHANNEL_SP,
+ NCSI_PROBE_CHANNEL,
+ NCSI_CONFIG,
+ } state;
+
+ unsigned int pending_requests;
+ unsigned int requests[256];
+ unsigned int last_request;
+
+ unsigned int current_package;
+ unsigned int current_channel;
+
+ unsigned int n_packages;
+ struct ncsi_package *packages;
+};
+
+struct ncsi *ncsi_priv;
+
+bool ncsi_active(void)
+{
+ unsigned int np, nc;
+
+ if (!ncsi_priv)
+ return false;
+
+ np = ncsi_priv->current_package;
+ nc = ncsi_priv->current_channel;
+
+ if (ncsi_priv->state != NCSI_CONFIG)
+ return false;
+
+ return np < NCSI_PACKAGE_MAX && nc < NCSI_CHANNEL_MAX &&
+ ncsi_priv->packages[np].channels[nc].has_link;
+}
+
+static unsigned int cmd_payload(int cmd)
+{
+ switch (cmd) {
+ case NCSI_PKT_CMD_CIS:
+ return 0;
+ case NCSI_PKT_CMD_SP:
+ return 4;
+ case NCSI_PKT_CMD_DP:
+ return 0;
+ case NCSI_PKT_CMD_EC:
+ return 0;
+ case NCSI_PKT_CMD_DC:
+ return 4;
+ case NCSI_PKT_CMD_RC:
+ return 4;
+ case NCSI_PKT_CMD_ECNT:
+ return 0;
+ case NCSI_PKT_CMD_DCNT:
+ return 0;
+ case NCSI_PKT_CMD_AE:
+ return 8;
+ case NCSI_PKT_CMD_SL:
+ return 8;
+ case NCSI_PKT_CMD_GLS:
+ return 0;
+ case NCSI_PKT_CMD_SVF:
+ return 8;
+ case NCSI_PKT_CMD_EV:
+ return 4;
+ case NCSI_PKT_CMD_DV:
+ return 0;
+ case NCSI_PKT_CMD_SMA:
+ return 8;
+ case NCSI_PKT_CMD_EBF:
+ return 4;
+ case NCSI_PKT_CMD_DBF:
+ return 0;
+ case NCSI_PKT_CMD_EGMF:
+ return 4;
+ case NCSI_PKT_CMD_DGMF:
+ return 0;
+ case NCSI_PKT_CMD_SNFC:
+ return 4;
+ case NCSI_PKT_CMD_GVI:
+ return 0;
+ case NCSI_PKT_CMD_GC:
+ return 0;
+ case NCSI_PKT_CMD_GP:
+ return 0;
+ case NCSI_PKT_CMD_GCPS:
+ return 0;
+ case NCSI_PKT_CMD_GNS:
+ return 0;
+ case NCSI_PKT_CMD_GNPTS:
+ return 0;
+ case NCSI_PKT_CMD_GPS:
+ return 0;
+ default:
+ printf("NCSI: Unknown command 0x%02x\n", cmd);
+ return 0;
+ }
+}
+
+static u32 ncsi_calculate_checksum(unsigned char *data, int len)
+{
+ u32 checksum = 0;
+ int i;
+
+ for (i = 0; i < len; i += 2)
+ checksum += (((u32)data[i] << 8) | data[i + 1]);
+
+ checksum = (~checksum + 1);
+ return checksum;
+}
+
+static int ncsi_validate_rsp(struct ncsi_rsp_pkt *pkt, int payload)
+{
+ struct ncsi_rsp_pkt_hdr *hdr = &pkt->rsp;
+ __be32 pchecksum;
+ u32 checksum;
+
+ if (hdr->common.revision != 1) {
+ printf("NCSI: 0x%02x response has unsupported revision 0x%x\n",
+ hdr->common.type, hdr->common.revision);
+ return -1;
+ }
+
+ if (hdr->code != 0) {
+ printf("NCSI: 0x%02x response returns error %d\n",
+ hdr->common.type, __be16_to_cpu(hdr->code));
+ if (ntohs(hdr->reason) == 0x05)
+ printf("(Invalid command length)\n");
+ return -1;
+ }
+
+ if (ntohs(hdr->common.length) != payload) {
+ printf("NCSI: 0x%02x response has incorrect length %d\n",
+ hdr->common.type, hdr->common.length);
+ return -1;
+ }
+
+ pchecksum = get_unaligned_be32((void *)(hdr + 1) + payload - 4);
+ if (pchecksum != 0) {
+ checksum = ncsi_calculate_checksum((unsigned char *)hdr,
+ sizeof(*hdr) + payload - 4);
+ if (pchecksum != checksum) {
+ printf("NCSI: 0x%02x response has invalid checksum\n",
+ hdr->common.type);
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static void ncsi_rsp_ec(struct ncsi_rsp_pkt *pkt)
+{
+ struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&pkt->rsp;
+ unsigned int np, nc;
+
+ np = NCSI_PACKAGE_INDEX(rsp->common.channel);
+ nc = NCSI_CHANNEL_INDEX(rsp->common.channel);
+
+ if (ncsi_priv->packages[np].channels[nc].cap_aen != 0)
+ ncsi_send_ae(np, nc);
+ /* else, done */
+}
+
+static void ncsi_rsp_ecnt(struct ncsi_rsp_pkt *pkt)
+{
+ struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&pkt->rsp;
+ unsigned int np, nc;
+
+ np = NCSI_PACKAGE_INDEX(rsp->common.channel);
+ nc = NCSI_CHANNEL_INDEX(rsp->common.channel);
+
+ ncsi_send_command(np, nc, NCSI_PKT_CMD_EC, NULL, 0, true);
+}
+
+static void ncsi_rsp_ebf(struct ncsi_rsp_pkt *pkt)
+{
+ struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&pkt->rsp;
+ unsigned int np, nc;
+
+ np = NCSI_PACKAGE_INDEX(rsp->common.channel);
+ nc = NCSI_CHANNEL_INDEX(rsp->common.channel);
+
+ ncsi_send_command(np, nc, NCSI_PKT_CMD_ECNT, NULL, 0, true);
+}
+
+static void ncsi_rsp_sma(struct ncsi_rsp_pkt *pkt)
+{
+ struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&pkt->rsp;
+ unsigned int np, nc;
+
+ np = NCSI_PACKAGE_INDEX(rsp->common.channel);
+ nc = NCSI_CHANNEL_INDEX(rsp->common.channel);
+
+ ncsi_send_ebf(np, nc);
+}
+
+static void ncsi_rsp_gc(struct ncsi_rsp_pkt *pkt)
+{
+ struct ncsi_rsp_gc_pkt *gc = (struct ncsi_rsp_gc_pkt *)pkt;
+ struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&gc->rsp;
+ struct ncsi_channel *c;
+ unsigned int np, nc;
+
+ np = NCSI_PACKAGE_INDEX(rsp->common.channel);
+ nc = NCSI_CHANNEL_INDEX(rsp->common.channel);
+
+ if (np >= ncsi_priv->n_packages ||
+ nc >= ncsi_priv->packages[np].n_channels) {
+ printf("NCSI: Invalid package / channel (0x%02x, 0x%02x)\n",
+ np, nc);
+ return;
+ }
+
+ c = &ncsi_priv->packages[np].channels[nc];
+ c->cap_generic = ntohl(gc->cap) & NCSI_CAP_GENERIC_MASK;
+ c->cap_bc = ntohl(gc->bc_cap) & NCSI_CAP_BC_MASK;
+ c->cap_mc = ntohl(gc->mc_cap) & NCSI_CAP_MC_MASK;
+ c->cap_aen = ntohl(gc->aen_cap) & NCSI_CAP_AEN_MASK;
+ c->cap_vlan = ntohl(gc->vlan_mode) & NCSI_CAP_VLAN_MASK;
+
+ /* End of probe for this channel */
+}
+
+static void ncsi_rsp_gvi(struct ncsi_rsp_pkt *pkt)
+{
+ struct ncsi_rsp_gvi_pkt *gvi = (struct ncsi_rsp_gvi_pkt *)pkt;
+ struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&gvi->rsp;
+ struct ncsi_channel *c;
+ unsigned int np, nc, i;
+
+ np = NCSI_PACKAGE_INDEX(rsp->common.channel);
+ nc = NCSI_CHANNEL_INDEX(rsp->common.channel);
+
+ if (np >= ncsi_priv->n_packages ||
+ nc >= ncsi_priv->packages[np].n_channels) {
+ printf("NCSI: Invalid package / channel (0x%02x, 0x%02x)\n",
+ np, nc);
+ return;
+ }
+
+ c = &ncsi_priv->packages[np].channels[nc];
+ c->version.version = get_unaligned_be32(&gvi->ncsi_version);
+ c->version.alpha2 = gvi->alpha2;
+ memcpy(c->version.fw_name, gvi->fw_name, sizeof(c->version.fw_name));
+ c->version.fw_version = get_unaligned_be32(&gvi->fw_version);
+ for (i = 0; i < ARRAY_SIZE(c->version.pci_ids); i++)
+ c->version.pci_ids[i] = get_unaligned_be16(gvi->pci_ids + i);
+ c->version.mf_id = get_unaligned_be32(&gvi->mf_id);
+
+ if (ncsi_priv->state == NCSI_PROBE_CHANNEL)
+ ncsi_send_command(np, nc, NCSI_PKT_CMD_GC, NULL, 0, true);
+}
+
+static void ncsi_rsp_gls(struct ncsi_rsp_pkt *pkt)
+{
+ struct ncsi_rsp_gls_pkt *gls = (struct ncsi_rsp_gls_pkt *)pkt;
+ struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&gls->rsp;
+ unsigned int np, nc;
+
+ np = NCSI_PACKAGE_INDEX(rsp->common.channel);
+ nc = NCSI_CHANNEL_INDEX(rsp->common.channel);
+
+ if (np >= ncsi_priv->n_packages ||
+ nc >= ncsi_priv->packages[np].n_channels) {
+ printf("NCSI: Invalid package / channel (0x%02x, 0x%02x)\n",
+ np, nc);
+ return;
+ }
+
+ ncsi_priv->packages[np].channels[nc].has_link =
+ !!(get_unaligned_be32(&gls->status));
+
+ if (ncsi_priv->state == NCSI_PROBE_CHANNEL)
+ ncsi_send_command(np, nc, NCSI_PKT_CMD_GVI, NULL, 0, true);
+}
+
+static void ncsi_rsp_cis(struct ncsi_rsp_pkt *pkt)
+{
+ struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)pkt;
+ struct ncsi_package *package;
+ unsigned int np, nc;
+
+ np = NCSI_PACKAGE_INDEX(rsp->common.channel);
+ nc = NCSI_CHANNEL_INDEX(rsp->common.channel);
+
+ if (np >= ncsi_priv->n_packages) {
+ printf("NCSI: Mystery package 0x%02x from CIS\n", np);
+ return;
+ }
+
+ package = &ncsi_priv->packages[np];
+
+ if (nc < package->n_channels) {
+ /*
+ * This is fine in general but in the current design we
+ * don't send CIS commands to known channels.
+ */
+ debug("NCSI: Duplicate channel 0x%02x\n", nc);
+ return;
+ }
+
+ package->channels = realloc(package->channels,
+ sizeof(struct ncsi_channel) *
+ (package->n_channels + 1));
+ if (!package->channels) {
+ printf("NCSI: Could not allocate memory for new channel\n");
+ return;
+ }
+
+ debug("NCSI: New channel 0x%02x\n", nc);
+
+ package->channels[nc].id = nc;
+ package->channels[nc].has_link = false;
+ package->n_channels++;
+
+ ncsi_send_gls(np, nc);
+}
+
+static void ncsi_rsp_dp(struct ncsi_rsp_pkt *pkt)
+{
+ struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)pkt;
+ unsigned int np;
+
+ /* No action needed */
+
+ np = NCSI_PACKAGE_INDEX(rsp->common.channel);
+ if (np >= ncsi_priv->n_packages)
+ debug("NCSI: DP response from unknown package %d\n", np);
+}
+
+static void ncsi_rsp_sp(struct ncsi_rsp_pkt *pkt)
+{
+ struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)pkt;
+ unsigned int np;
+
+ np = NCSI_PACKAGE_INDEX(rsp->common.channel);
+
+ if (np < ncsi_priv->n_packages) {
+ /* Already know about this package */
+ debug("NCSI: package 0x%02x selected\n", np);
+ return;
+ }
+
+ debug("NCSI: adding new package %d\n", np);
+
+ ncsi_priv->packages = realloc(ncsi_priv->packages,
+ sizeof(struct ncsi_package) *
+ (ncsi_priv->n_packages + 1));
+ if (!ncsi_priv->packages) {
+ printf("NCSI: could not allocate memory for new package\n");
+ return;
+ }
+
+ ncsi_priv->packages[np].id = np;
+ ncsi_priv->packages[np].n_channels = 0;
+ ncsi_priv->packages[np].channels = NULL;
+ ncsi_priv->n_packages++;
+}
+
+static void ncsi_update_state(struct ncsi_rsp_pkt_hdr *nh)
+{
+ bool timeout = !nh;
+ int np, nc;
+
+ switch (ncsi_priv->state) {
+ case NCSI_PROBE_PACKAGE_SP:
+ if (!timeout &&
+ ncsi_priv->current_package + 1 < NCSI_PACKAGE_MAX) {
+ ncsi_priv->current_package++;
+ } else {
+ ncsi_priv->state = NCSI_PROBE_PACKAGE_DP;
+ ncsi_priv->current_package = 0;
+ }
+ return ncsi_probe_packages();
+ case NCSI_PROBE_PACKAGE_DP:
+ if (ncsi_priv->current_package + 1 < ncsi_priv->n_packages &&
+ !timeout) {
+ ncsi_priv->current_package++;
+ } else {
+ if (!ncsi_priv->n_packages) {
+ printf("NCSI: no packages found\n");
+ net_set_state(NETLOOP_FAIL);
+ return;
+ }
+ printf("NCSI: probing channels\n");
+ ncsi_priv->state = NCSI_PROBE_CHANNEL_SP;
+ ncsi_priv->current_package = 0;
+ ncsi_priv->current_channel = 0;
+ }
+ return ncsi_probe_packages();
+ case NCSI_PROBE_CHANNEL_SP:
+ if (!timeout && nh->common.type == NCSI_PKT_RSP_SP) {
+ ncsi_priv->state = NCSI_PROBE_CHANNEL;
+ return ncsi_probe_packages();
+ }
+ printf("NCSI: failed to select package 0x%0x2 or timeout\n",
+ ncsi_priv->current_package);
+ net_set_state(NETLOOP_FAIL);
+ break;
+ case NCSI_PROBE_CHANNEL:
+ // TODO only does package 0 for now
+ if (ncsi_priv->pending_requests == 0) {
+ np = ncsi_priv->current_package;
+ nc = ncsi_priv->current_channel;
+
+ /* Configure first channel that has link */
+ if (ncsi_priv->packages[np].channels[nc].has_link) {
+ ncsi_priv->state = NCSI_CONFIG;
+ } else if (ncsi_priv->current_channel + 1 <
+ NCSI_CHANNEL_MAX) {
+ ncsi_priv->current_channel++;
+ } else {
+ // XXX As above only package 0
+ printf("NCSI: no channel found with link\n");
+ net_set_state(NETLOOP_FAIL);
+ return;
+ }
+ return ncsi_probe_packages();
+ }
+ break;
+ case NCSI_CONFIG:
+ if (ncsi_priv->pending_requests == 0) {
+ printf("NCSI: configuration done!\n");
+ net_set_state(NETLOOP_SUCCESS);
+ } else if (timeout) {
+ printf("NCSI: timeout during configure\n");
+ net_set_state(NETLOOP_FAIL);
+ }
+ break;
+ default:
+ printf("NCSI: something went very wrong, nevermind\n");
+ net_set_state(NETLOOP_FAIL);
+ break;
+ }
+}
+
+static void ncsi_timeout_handler(void)
+{
+ if (ncsi_priv->pending_requests)
+ ncsi_priv->pending_requests--;
+
+ ncsi_update_state(NULL);
+}
+
+static int ncsi_send_command(unsigned int np, unsigned int nc, unsigned int cmd,
+ uchar *payload, int len, bool wait)
+{
+ struct ncsi_pkt_hdr *hdr;
+ __be32 *pchecksum;
+ int eth_hdr_size;
+ u32 checksum;
+ uchar *pkt, *start;
+ int final_len;
+
+ pkt = calloc(1, PKTSIZE_ALIGN + PKTALIGN);
+ if (!pkt)
+ return -ENOMEM;
+ start = pkt;
+
+ eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_NCSI);
+ pkt += eth_hdr_size;
+
+ /* Set NCSI command header fields */
+ hdr = (struct ncsi_pkt_hdr *)pkt;
+ hdr->mc_id = 0;
+ hdr->revision = NCSI_PKT_REVISION;
+ hdr->id = ++ncsi_priv->last_request;
+ ncsi_priv->requests[ncsi_priv->last_request] = 1;
+ hdr->type = cmd;
+ hdr->channel = NCSI_TO_CHANNEL(np, nc);
+ hdr->length = htons(len);
+
+ if (payload && len)
+ memcpy(pkt + sizeof(struct ncsi_pkt_hdr), payload, len);
+
+ /* Calculate checksum */
+ checksum = ncsi_calculate_checksum((unsigned char *)hdr,
+ sizeof(*hdr) + len);
+ pchecksum = (__be32 *)((void *)(hdr + 1) + len);
+ put_unaligned_be32(htonl(checksum), pchecksum);
+
+ if (wait) {
+ net_set_timeout_handler(1000UL, ncsi_timeout_handler);
+ ncsi_priv->pending_requests++;
+ }
+
+ if (len < 26)
+ len = 26;
+ /* frame header, packet header, payload, checksum */
+ final_len = eth_hdr_size + sizeof(struct ncsi_cmd_pkt_hdr) + len + 4;
+
+ net_send_packet(start, final_len);
+ free(start);
+ return 0;
+}
+
+static void ncsi_handle_aen(struct ip_udp_hdr *ip, unsigned int len)
+{
+ struct ncsi_aen_pkt_hdr *hdr = (struct ncsi_aen_pkt_hdr *)ip;
+ int payload, i;
+ __be32 pchecksum;
+ u32 checksum;
+
+ switch (hdr->type) {
+ case NCSI_PKT_AEN_LSC:
+ printf("NCSI: link state changed\n");
+ payload = 12;
+ break;
+ case NCSI_PKT_AEN_CR:
+ printf("NCSI: re-configuration required\n");
+ payload = 4;
+ break;
+ case NCSI_PKT_AEN_HNCDSC:
+ /* Host notifcation - N/A but weird */
+ debug("NCSI: HNCDSC AEN received\n");
+ return;
+ default:
+ printf("%s: Invalid type 0x%02x\n", __func__, hdr->type);
+ return;
+ }
+
+ /* Validate packet */
+ if (hdr->common.revision != 1) {
+ printf("NCSI: 0x%02x response has unsupported revision 0x%x\n",
+ hdr->common.type, hdr->common.revision);
+ return;
+ }
+
+ if (ntohs(hdr->common.length) != payload) {
+ printf("NCSI: 0x%02x response has incorrect length %d\n",
+ hdr->common.type, hdr->common.length);
+ return;
+ }
+
+ pchecksum = get_unaligned_be32((void *)(hdr + 1) + payload - 4);
+ if (pchecksum != 0) {
+ checksum = ncsi_calculate_checksum((unsigned char *)hdr,
+ sizeof(*hdr) + payload - 4);
+ if (pchecksum != checksum) {
+ printf("NCSI: 0x%02x response has invalid checksum\n",
+ hdr->common.type);
+ return;
+ }
+ }
+
+ /* Link or configuration lost - just redo the discovery process */
+ ncsi_priv->state = NCSI_PROBE_PACKAGE_SP;
+ for (i = 0; i < ncsi_priv->n_packages; i++)
+ free(ncsi_priv->packages[i].channels);
+ free(ncsi_priv->packages);
+ ncsi_priv->n_packages = 0;
+
+ ncsi_priv->current_package = NCSI_PACKAGE_MAX;
+ ncsi_priv->current_channel = NCSI_CHANNEL_MAX;
+
+ ncsi_probe_packages();
+}
+
+void ncsi_receive(struct ethernet_hdr *et, struct ip_udp_hdr *ip,
+ unsigned int len)
+{
+ struct ncsi_rsp_pkt *pkt = (struct ncsi_rsp_pkt *)ip;
+ struct ncsi_rsp_pkt_hdr *nh = (struct ncsi_rsp_pkt_hdr *)&pkt->rsp;
+ void (*handler)(struct ncsi_rsp_pkt *pkt) = NULL;
+ unsigned short payload;
+
+ if (ncsi_priv->pending_requests)
+ ncsi_priv->pending_requests--;
+
+ if (len < sizeof(struct ncsi_rsp_pkt_hdr)) {
+ printf("NCSI: undersized packet: %u bytes\n", len);
+ goto out;
+ }
+
+ if (nh->common.type == NCSI_PKT_AEN)
+ return ncsi_handle_aen(ip, len);
+
+ switch (nh->common.type) {
+ case NCSI_PKT_RSP_SP:
+ payload = 4;
+ handler = ncsi_rsp_sp;
+ break;
+ case NCSI_PKT_RSP_DP:
+ payload = 4;
+ handler = ncsi_rsp_dp;
+ break;
+ case NCSI_PKT_RSP_CIS:
+ payload = 4;
+ handler = ncsi_rsp_cis;
+ break;
+ case NCSI_PKT_RSP_GLS:
+ payload = 16;
+ handler = ncsi_rsp_gls;
+ break;
+ case NCSI_PKT_RSP_GVI:
+ payload = 40;
+ handler = ncsi_rsp_gvi;
+ break;
+ case NCSI_PKT_RSP_GC:
+ payload = 32;
+ handler = ncsi_rsp_gc;
+ break;
+ case NCSI_PKT_RSP_SMA:
+ payload = 4;
+ handler = ncsi_rsp_sma;
+ break;
+ case NCSI_PKT_RSP_EBF:
+ payload = 4;
+ handler = ncsi_rsp_ebf;
+ break;
+ case NCSI_PKT_RSP_ECNT:
+ payload = 4;
+ handler = ncsi_rsp_ecnt;
+ break;
+ case NCSI_PKT_RSP_EC:
+ payload = 4;
+ handler = ncsi_rsp_ec;
+ break;
+ case NCSI_PKT_RSP_AE:
+ payload = 4;
+ handler = NULL;
+ break;
+ default:
+ printf("NCSI: unsupported packet type 0x%02x\n",
+ nh->common.type);
+ goto out;
+ }
+
+ if (ncsi_validate_rsp(pkt, payload) != 0) {
+ printf("NCSI: discarding invalid packet of type 0x%02x\n",
+ nh->common.type);
+ goto out;
+ }
+
+ if (handler)
+ handler(pkt);
+out:
+ ncsi_update_state(nh);
+}
+
+static void ncsi_send_sp(unsigned int np)
+{
+ uchar payload[4] = {0};
+
+ ncsi_send_command(np, NCSI_RESERVED_CHANNEL, NCSI_PKT_CMD_SP,
+ (unsigned char *)&payload,
+ cmd_payload(NCSI_PKT_CMD_SP), true);
+}
+
+static void ncsi_send_dp(unsigned int np)
+{
+ ncsi_send_command(np, NCSI_RESERVED_CHANNEL, NCSI_PKT_CMD_DP, NULL, 0,
+ true);
+}
+
+static void ncsi_send_gls(unsigned int np, unsigned int nc)
+{
+ ncsi_send_command(np, nc, NCSI_PKT_CMD_GLS, NULL, 0, true);
+}
+
+static void ncsi_send_cis(unsigned int np, unsigned int nc)
+{
+ ncsi_send_command(np, nc, NCSI_PKT_CMD_CIS, NULL, 0, true);
+}
+
+static void ncsi_send_ae(unsigned int np, unsigned int nc)
+{
+ struct ncsi_cmd_ae_pkt cmd;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.mode = htonl(ncsi_priv->packages[np].channels[nc].cap_aen);
+
+ ncsi_send_command(np, nc, NCSI_PKT_CMD_AE,
+ ((unsigned char *)&cmd)
+ + sizeof(struct ncsi_cmd_pkt_hdr),
+ cmd_payload(NCSI_PKT_CMD_AE), true);
+}
+
+static void ncsi_send_ebf(unsigned int np, unsigned int nc)
+{
+ struct ncsi_cmd_ebf_pkt cmd;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.mode = htonl(ncsi_priv->packages[np].channels[nc].cap_bc);
+
+ ncsi_send_command(np, nc, NCSI_PKT_CMD_EBF,
+ ((unsigned char *)&cmd)
+ + sizeof(struct ncsi_cmd_pkt_hdr),
+ cmd_payload(NCSI_PKT_CMD_EBF), true);
+}
+
+static void ncsi_send_sma(unsigned int np, unsigned int nc)
+{
+ struct ncsi_cmd_sma_pkt cmd;
+ unsigned char *addr;
+
+ addr = eth_get_ethaddr();
+ if (!addr) {
+ printf("NCSI: no MAC address configured\n");
+ return;
+ }
+
+ memset(&cmd, 0, sizeof(cmd));
+ memcpy(cmd.mac, addr, 6);
+ cmd.index = 1;
+ cmd.at_e = 1;
+
+ ncsi_send_command(np, nc, NCSI_PKT_CMD_SMA,
+ ((unsigned char *)&cmd)
+ + sizeof(struct ncsi_cmd_pkt_hdr),
+ cmd_payload(NCSI_PKT_CMD_SMA), true);
+}
+
+void ncsi_probe_packages(void)
+{
+ struct ncsi_package *package;
+ unsigned int np, nc;
+
+ switch (ncsi_priv->state) {
+ case NCSI_PROBE_PACKAGE_SP:
+ if (ncsi_priv->current_package == NCSI_PACKAGE_MAX)
+ ncsi_priv->current_package = 0;
+ ncsi_send_sp(ncsi_priv->current_package);
+ break;
+ case NCSI_PROBE_PACKAGE_DP:
+ ncsi_send_dp(ncsi_priv->current_package);
+ break;
+ case NCSI_PROBE_CHANNEL_SP:
+ if (ncsi_priv->n_packages > 0)
+ ncsi_send_sp(ncsi_priv->current_package);
+ else
+ printf("NCSI: no packages discovered, configuration not possible\n");
+ break;
+ case NCSI_PROBE_CHANNEL:
+ /* Kicks off chain of channel discovery */
+ ncsi_send_cis(ncsi_priv->current_package,
+ ncsi_priv->current_channel);
+ break;
+ case NCSI_CONFIG:
+ for (np = 0; np < ncsi_priv->n_packages; np++) {
+ package = &ncsi_priv->packages[np];
+ for (nc = 0; nc < package->n_channels; nc++)
+ if (package->channels[nc].has_link)
+ break;
+ if (nc < package->n_channels)
+ break;
+ }
+ if (np == ncsi_priv->n_packages) {
+ printf("NCSI: no link available\n");
+ return;
+ }
+
+ printf("NCSI: configuring channel %d\n", nc);
+ ncsi_priv->current_package = np;
+ ncsi_priv->current_channel = nc;
+ /* Kicks off rest of configure chain */
+ ncsi_send_sma(np, nc);
+ break;
+ default:
+ printf("NCSI: unknown state 0x%x\n", ncsi_priv->state);
+ }
+}
+
+int ncsi_probe(struct phy_device *phydev)
+{
+ // TODO Associate per device
+ if (!ncsi_priv) {
+ ncsi_priv = malloc(sizeof(struct ncsi));
+ if (!ncsi_priv)
+ return -ENOMEM;
+ memset(ncsi_priv, 0, sizeof(struct ncsi));
+ }
+
+ phydev->priv = ncsi_priv;
+
+ return 0;
+}
+
+int ncsi_startup(struct phy_device *phydev)
+{
+ /* Set phydev parameters */
+ phydev->speed = SPEED_100;
+ phydev->duplex = DUPLEX_FULL;
+ /* Normal phy reset is N/A */
+ phydev->flags |= PHY_FLAG_BROKEN_RESET;
+
+ /* Set initial probe state */
+ ncsi_priv->state = NCSI_PROBE_PACKAGE_SP;
+
+ /* No active package/channel yet */
+ ncsi_priv->current_package = NCSI_PACKAGE_MAX;
+ ncsi_priv->current_channel = NCSI_CHANNEL_MAX;
+
+ /* Pretend link works so ftgmac100 sets final bits up */
+ phydev->link = true;
+
+ return 0;
+}
+
+int ncsi_shutdown(struct phy_device *phydev)
+{
+ printf("NCSI: Disabling package %d\n", ncsi_priv->current_package);
+ ncsi_send_dp(ncsi_priv->current_package);
+ return 0;
+}
+
+static struct phy_driver ncsi_driver = {
+ .uid = PHY_NCSI_ID,
+ .mask = 0xffffffff,
+ .name = "NC-SI",
+ .features = PHY_100BT_FEATURES | PHY_DEFAULT_FEATURES | SUPPORTED_100baseT_Full | SUPPORTED_MII,
+ .probe = ncsi_probe,
+ .startup = ncsi_startup,
+ .shutdown = ncsi_shutdown,
+};
+
+int phy_ncsi_init(void)
+{
+ phy_register(&ncsi_driver);
+ return 0;
+}
diff --git a/include/net.h b/include/net.h
index 51c099dae2..4f7ba211b6 100644
--- a/include/net.h
+++ b/include/net.h
@@ -350,6 +350,7 @@ struct vlan_ethernet_hdr {
#define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */
#define PROT_IPV6 0x86dd /* IPv6 over bluebook */
#define PROT_PPP_SES 0x8864 /* PPPoE session messages */
+#define PROT_NCSI 0x88f8 /* NC-SI control packets */
#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
#define IPPROTO_UDP 17 /* User Datagram Protocol */
diff --git a/include/net/ncsi-pkt.h b/include/net/ncsi-pkt.h
new file mode 100644
index 0000000000..91b4b66438
--- /dev/null
+++ b/include/net/ncsi-pkt.h
@@ -0,0 +1,415 @@
+/*
+ * Copyright Gavin Shan, IBM Corporation 2016.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __NCSI_PKT_H__
+#define __NCSI_PKT_H__
+
+struct ncsi_pkt_hdr {
+ unsigned char mc_id; /* Management controller ID */
+ unsigned char revision; /* NCSI version - 0x01 */
+ unsigned char reserved; /* Reserved */
+ unsigned char id; /* Packet sequence number */
+ unsigned char type; /* Packet type */
+ unsigned char channel; /* Network controller ID */
+ __be16 length; /* Payload length */
+ __be32 reserved1[2]; /* Reserved */
+};
+
+struct ncsi_cmd_pkt_hdr {
+ struct ncsi_pkt_hdr common; /* Common NCSI packet header */
+};
+
+struct ncsi_rsp_pkt_hdr {
+ struct ncsi_pkt_hdr common; /* Common NCSI packet header */
+ __be16 code; /* Response code */
+ __be16 reason; /* Response reason */
+};
+
+struct ncsi_aen_pkt_hdr {
+ struct ncsi_pkt_hdr common; /* Common NCSI packet header */
+ unsigned char reserved2[3]; /* Reserved */
+ unsigned char type; /* AEN packet type */
+};
+
+/* NCSI common command packet */
+struct ncsi_cmd_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[26];
+};
+
+struct ncsi_rsp_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Select Package */
+struct ncsi_cmd_sp_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char hw_arbitration; /* HW arbitration */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Disable Channel */
+struct ncsi_cmd_dc_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char ald; /* Allow link down */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Reset Channel */
+struct ncsi_cmd_rc_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 reserved; /* Reserved */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* AEN Enable */
+struct ncsi_cmd_ae_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char mc_id; /* MC ID */
+ __be32 mode; /* AEN working mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* Set Link */
+struct ncsi_cmd_sl_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 mode; /* Link working mode */
+ __be32 oem_mode; /* OEM link mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* Set VLAN Filter */
+struct ncsi_cmd_svf_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be16 reserved; /* Reserved */
+ __be16 vlan; /* VLAN ID */
+ __be16 reserved1; /* Reserved */
+ unsigned char index; /* VLAN table index */
+ unsigned char enable; /* Enable or disable */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* Enable VLAN */
+struct ncsi_cmd_ev_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char mode; /* VLAN filter mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Set MAC Address */
+struct ncsi_cmd_sma_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char mac[6]; /* MAC address */
+ unsigned char index; /* MAC table index */
+ unsigned char at_e; /* Addr type and operation */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* Enable Broadcast Filter */
+struct ncsi_cmd_ebf_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 mode; /* Filter mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Enable Global Multicast Filter */
+struct ncsi_cmd_egmf_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ __be32 mode; /* Global MC mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Set NCSI Flow Control */
+struct ncsi_cmd_snfc_pkt {
+ struct ncsi_cmd_pkt_hdr cmd; /* Command header */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char mode; /* Flow control mode */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* Get Link Status */
+struct ncsi_rsp_gls_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 status; /* Link status */
+ __be32 other; /* Other indications */
+ __be32 oem_status; /* OEM link status */
+ __be32 checksum;
+ unsigned char pad[10];
+};
+
+/* Get Version ID */
+struct ncsi_rsp_gvi_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 ncsi_version; /* NCSI version */
+ unsigned char reserved[3]; /* Reserved */
+ unsigned char alpha2; /* NCSI version */
+ unsigned char fw_name[12]; /* f/w name string */
+ __be32 fw_version; /* f/w version */
+ __be16 pci_ids[4]; /* PCI IDs */
+ __be32 mf_id; /* Manufacture ID */
+ __be32 checksum;
+};
+
+/* Get Capabilities */
+struct ncsi_rsp_gc_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 cap; /* Capabilities */
+ __be32 bc_cap; /* Broadcast cap */
+ __be32 mc_cap; /* Multicast cap */
+ __be32 buf_cap; /* Buffering cap */
+ __be32 aen_cap; /* AEN cap */
+ unsigned char vlan_cnt; /* VLAN filter count */
+ unsigned char mixed_cnt; /* Mix filter count */
+ unsigned char mc_cnt; /* MC filter count */
+ unsigned char uc_cnt; /* UC filter count */
+ unsigned char reserved[2]; /* Reserved */
+ unsigned char vlan_mode; /* VLAN mode */
+ unsigned char channel_cnt; /* Channel count */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get Parameters */
+struct ncsi_rsp_gp_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ unsigned char mac_cnt; /* Number of MAC addr */
+ unsigned char reserved[2]; /* Reserved */
+ unsigned char mac_enable; /* MAC addr enable flags */
+ unsigned char vlan_cnt; /* VLAN tag count */
+ unsigned char reserved1; /* Reserved */
+ __be16 vlan_enable; /* VLAN tag enable flags */
+ __be32 link_mode; /* Link setting */
+ __be32 bc_mode; /* BC filter mode */
+ __be32 valid_modes; /* Valid mode parameters */
+ unsigned char vlan_mode; /* VLAN mode */
+ unsigned char fc_mode; /* Flow control mode */
+ unsigned char reserved2[2]; /* Reserved */
+ __be32 aen_mode; /* AEN mode */
+ unsigned char mac[6]; /* Supported MAC addr */
+ __be16 vlan; /* Supported VLAN tags */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get Controller Packet Statistics */
+struct ncsi_rsp_gcps_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 cnt_hi; /* Counter cleared */
+ __be32 cnt_lo; /* Counter cleared */
+ __be32 rx_bytes; /* Rx bytes */
+ __be32 tx_bytes; /* Tx bytes */
+ __be32 rx_uc_pkts; /* Rx UC packets */
+ __be32 rx_mc_pkts; /* Rx MC packets */
+ __be32 rx_bc_pkts; /* Rx BC packets */
+ __be32 tx_uc_pkts; /* Tx UC packets */
+ __be32 tx_mc_pkts; /* Tx MC packets */
+ __be32 tx_bc_pkts; /* Tx BC packets */
+ __be32 fcs_err; /* FCS errors */
+ __be32 align_err; /* Alignment errors */
+ __be32 false_carrier; /* False carrier detection */
+ __be32 runt_pkts; /* Rx runt packets */
+ __be32 jabber_pkts; /* Rx jabber packets */
+ __be32 rx_pause_xon; /* Rx pause XON frames */
+ __be32 rx_pause_xoff; /* Rx XOFF frames */
+ __be32 tx_pause_xon; /* Tx XON frames */
+ __be32 tx_pause_xoff; /* Tx XOFF frames */
+ __be32 tx_s_collision; /* Single collision frames */
+ __be32 tx_m_collision; /* Multiple collision frames */
+ __be32 l_collision; /* Late collision frames */
+ __be32 e_collision; /* Excessive collision frames */
+ __be32 rx_ctl_frames; /* Rx control frames */
+ __be32 rx_64_frames; /* Rx 64-bytes frames */
+ __be32 rx_127_frames; /* Rx 65-127 bytes frames */
+ __be32 rx_255_frames; /* Rx 128-255 bytes frames */
+ __be32 rx_511_frames; /* Rx 256-511 bytes frames */
+ __be32 rx_1023_frames; /* Rx 512-1023 bytes frames */
+ __be32 rx_1522_frames; /* Rx 1024-1522 bytes frames */
+ __be32 rx_9022_frames; /* Rx 1523-9022 bytes frames */
+ __be32 tx_64_frames; /* Tx 64-bytes frames */
+ __be32 tx_127_frames; /* Tx 65-127 bytes frames */
+ __be32 tx_255_frames; /* Tx 128-255 bytes frames */
+ __be32 tx_511_frames; /* Tx 256-511 bytes frames */
+ __be32 tx_1023_frames; /* Tx 512-1023 bytes frames */
+ __be32 tx_1522_frames; /* Tx 1024-1522 bytes frames */
+ __be32 tx_9022_frames; /* Tx 1523-9022 bytes frames */
+ __be32 rx_valid_bytes; /* Rx valid bytes */
+ __be32 rx_runt_pkts; /* Rx error runt packets */
+ __be32 rx_jabber_pkts; /* Rx error jabber packets */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get NCSI Statistics */
+struct ncsi_rsp_gns_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 rx_cmds; /* Rx NCSI commands */
+ __be32 dropped_cmds; /* Dropped commands */
+ __be32 cmd_type_errs; /* Command type errors */
+ __be32 cmd_csum_errs; /* Command checksum errors */
+ __be32 rx_pkts; /* Rx NCSI packets */
+ __be32 tx_pkts; /* Tx NCSI packets */
+ __be32 tx_aen_pkts; /* Tx AEN packets */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get NCSI Pass-through Statistics */
+struct ncsi_rsp_gnpts_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 tx_pkts; /* Tx packets */
+ __be32 tx_dropped; /* Tx dropped packets */
+ __be32 tx_channel_err; /* Tx channel errors */
+ __be32 tx_us_err; /* Tx undersize errors */
+ __be32 rx_pkts; /* Rx packets */
+ __be32 rx_dropped; /* Rx dropped packets */
+ __be32 rx_channel_err; /* Rx channel errors */
+ __be32 rx_us_err; /* Rx undersize errors */
+ __be32 rx_os_err; /* Rx oversize errors */
+ __be32 checksum; /* Checksum */
+};
+
+/* Get package status */
+struct ncsi_rsp_gps_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ __be32 status; /* Hardware arbitration status */
+ __be32 checksum;
+};
+
+/* Get package UUID */
+struct ncsi_rsp_gpuuid_pkt {
+ struct ncsi_rsp_pkt_hdr rsp; /* Response header */
+ unsigned char uuid[16]; /* UUID */
+ __be32 checksum;
+};
+
+/* AEN: Link State Change */
+struct ncsi_aen_lsc_pkt {
+ struct ncsi_aen_pkt_hdr aen; /* AEN header */
+ __be32 status; /* Link status */
+ __be32 oem_status; /* OEM link status */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[14];
+};
+
+/* AEN: Configuration Required */
+struct ncsi_aen_cr_pkt {
+ struct ncsi_aen_pkt_hdr aen; /* AEN header */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[22];
+};
+
+/* AEN: Host Network Controller Driver Status Change */
+struct ncsi_aen_hncdsc_pkt {
+ struct ncsi_aen_pkt_hdr aen; /* AEN header */
+ __be32 status; /* Status */
+ __be32 checksum; /* Checksum */
+ unsigned char pad[18];
+};
+
+/* NCSI packet revision */
+#define NCSI_PKT_REVISION 0x01
+
+/* NCSI packet commands */
+#define NCSI_PKT_CMD_CIS 0x00 /* Clear Initial State */
+#define NCSI_PKT_CMD_SP 0x01 /* Select Package */
+#define NCSI_PKT_CMD_DP 0x02 /* Deselect Package */
+#define NCSI_PKT_CMD_EC 0x03 /* Enable Channel */
+#define NCSI_PKT_CMD_DC 0x04 /* Disable Channel */
+#define NCSI_PKT_CMD_RC 0x05 /* Reset Channel */
+#define NCSI_PKT_CMD_ECNT 0x06 /* Enable Channel Network Tx */
+#define NCSI_PKT_CMD_DCNT 0x07 /* Disable Channel Network Tx */
+#define NCSI_PKT_CMD_AE 0x08 /* AEN Enable */
+#define NCSI_PKT_CMD_SL 0x09 /* Set Link */
+#define NCSI_PKT_CMD_GLS 0x0a /* Get Link */
+#define NCSI_PKT_CMD_SVF 0x0b /* Set VLAN Filter */
+#define NCSI_PKT_CMD_EV 0x0c /* Enable VLAN */
+#define NCSI_PKT_CMD_DV 0x0d /* Disable VLAN */
+#define NCSI_PKT_CMD_SMA 0x0e /* Set MAC address */
+#define NCSI_PKT_CMD_EBF 0x10 /* Enable Broadcast Filter */
+#define NCSI_PKT_CMD_DBF 0x11 /* Disable Broadcast Filter */
+#define NCSI_PKT_CMD_EGMF 0x12 /* Enable Global Multicast Filter */
+#define NCSI_PKT_CMD_DGMF 0x13 /* Disable Global Multicast Filter */
+#define NCSI_PKT_CMD_SNFC 0x14 /* Set NCSI Flow Control */
+#define NCSI_PKT_CMD_GVI 0x15 /* Get Version ID */
+#define NCSI_PKT_CMD_GC 0x16 /* Get Capabilities */
+#define NCSI_PKT_CMD_GP 0x17 /* Get Parameters */
+#define NCSI_PKT_CMD_GCPS 0x18 /* Get Controller Packet Statistics */
+#define NCSI_PKT_CMD_GNS 0x19 /* Get NCSI Statistics */
+#define NCSI_PKT_CMD_GNPTS 0x1a /* Get NCSI Pass-throu Statistics */
+#define NCSI_PKT_CMD_GPS 0x1b /* Get package status */
+#define NCSI_PKT_CMD_OEM 0x50 /* OEM */
+#define NCSI_PKT_CMD_PLDM 0x51 /* PLDM request over NCSI over RBT */
+#define NCSI_PKT_CMD_GPUUID 0x52 /* Get package UUID */
+
+/* NCSI packet responses */
+#define NCSI_PKT_RSP_CIS (NCSI_PKT_CMD_CIS + 0x80)
+#define NCSI_PKT_RSP_SP (NCSI_PKT_CMD_SP + 0x80)
+#define NCSI_PKT_RSP_DP (NCSI_PKT_CMD_DP + 0x80)
+#define NCSI_PKT_RSP_EC (NCSI_PKT_CMD_EC + 0x80)
+#define NCSI_PKT_RSP_DC (NCSI_PKT_CMD_DC + 0x80)
+#define NCSI_PKT_RSP_RC (NCSI_PKT_CMD_RC + 0x80)
+#define NCSI_PKT_RSP_ECNT (NCSI_PKT_CMD_ECNT + 0x80)
+#define NCSI_PKT_RSP_DCNT (NCSI_PKT_CMD_DCNT + 0x80)
+#define NCSI_PKT_RSP_AE (NCSI_PKT_CMD_AE + 0x80)
+#define NCSI_PKT_RSP_SL (NCSI_PKT_CMD_SL + 0x80)
+#define NCSI_PKT_RSP_GLS (NCSI_PKT_CMD_GLS + 0x80)
+#define NCSI_PKT_RSP_SVF (NCSI_PKT_CMD_SVF + 0x80)
+#define NCSI_PKT_RSP_EV (NCSI_PKT_CMD_EV + 0x80)
+#define NCSI_PKT_RSP_DV (NCSI_PKT_CMD_DV + 0x80)
+#define NCSI_PKT_RSP_SMA (NCSI_PKT_CMD_SMA + 0x80)
+#define NCSI_PKT_RSP_EBF (NCSI_PKT_CMD_EBF + 0x80)
+#define NCSI_PKT_RSP_DBF (NCSI_PKT_CMD_DBF + 0x80)
+#define NCSI_PKT_RSP_EGMF (NCSI_PKT_CMD_EGMF + 0x80)
+#define NCSI_PKT_RSP_DGMF (NCSI_PKT_CMD_DGMF + 0x80)
+#define NCSI_PKT_RSP_SNFC (NCSI_PKT_CMD_SNFC + 0x80)
+#define NCSI_PKT_RSP_GVI (NCSI_PKT_CMD_GVI + 0x80)
+#define NCSI_PKT_RSP_GC (NCSI_PKT_CMD_GC + 0x80)
+#define NCSI_PKT_RSP_GP (NCSI_PKT_CMD_GP + 0x80)
+#define NCSI_PKT_RSP_GCPS (NCSI_PKT_CMD_GCPS + 0x80)
+#define NCSI_PKT_RSP_GNS (NCSI_PKT_CMD_GNS + 0x80)
+#define NCSI_PKT_RSP_GNPTS (NCSI_PKT_CMD_GNPTS + 0x80)
+#define NCSI_PKT_RSP_GPS (NCSI_PKT_CMD_GPS + 0x80)
+#define NCSI_PKT_RSP_OEM (NCSI_PKT_CMD_OEM + 0x80)
+#define NCSI_PKT_RSP_PLDM (NCSI_PKT_CMD_PLDM + 0x80)
+#define NCSI_PKT_RSP_GPUUID (NCSI_PKT_CMD_GPUUID + 0x80)
+
+/* NCSI response code/reason */
+#define NCSI_PKT_RSP_C_COMPLETED 0x0000 /* Command Completed */
+#define NCSI_PKT_RSP_C_FAILED 0x0001 /* Command Failed */
+#define NCSI_PKT_RSP_C_UNAVAILABLE 0x0002 /* Command Unavailable */
+#define NCSI_PKT_RSP_C_UNSUPPORTED 0x0003 /* Command Unsupported */
+#define NCSI_PKT_RSP_R_NO_ERROR 0x0000 /* No Error */
+#define NCSI_PKT_RSP_R_INTERFACE 0x0001 /* Interface not ready */
+#define NCSI_PKT_RSP_R_PARAM 0x0002 /* Invalid Parameter */
+#define NCSI_PKT_RSP_R_CHANNEL 0x0003 /* Channel not Ready */
+#define NCSI_PKT_RSP_R_PACKAGE 0x0004 /* Package not Ready */
+#define NCSI_PKT_RSP_R_LENGTH 0x0005 /* Invalid payload length */
+#define NCSI_PKT_RSP_R_UNKNOWN 0x7fff /* Command type unsupported */
+
+/* NCSI AEN packet type */
+#define NCSI_PKT_AEN 0xFF /* AEN Packet */
+#define NCSI_PKT_AEN_LSC 0x00 /* Link status change */
+#define NCSI_PKT_AEN_CR 0x01 /* Configuration required */
+#define NCSI_PKT_AEN_HNCDSC 0x02 /* HNC driver status change */
+
+#endif /* __NCSI_PKT_H__ */
diff --git a/include/net/ncsi.h b/include/net/ncsi.h
new file mode 100644
index 0000000000..9637beab2a
--- /dev/null
+++ b/include/net/ncsi.h
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * NC-SI PHY
+ *
+ * Copyright (C) 2019, IBM Corporation.
+ */
+
+#include <common.h>
+#include <phy.h>
+
+bool ncsi_active(void);
+void ncsi_receive(struct ethernet_hdr *et, struct ip_udp_hdr *ip,
+ unsigned int len);
+void ncsi_probe_packages(void);
diff --git a/include/phy.h b/include/phy.h
index b86fdfb2ce..f0c9df46c6 100644
--- a/include/phy.h
+++ b/include/phy.h
@@ -17,6 +17,7 @@
#include <phy_interface.h>
#define PHY_FIXED_ID 0xa5a55a5a
+#define PHY_NCSI_ID 0xbeefcafe
#define PHY_MAX_ADDR 32
--
2.21.0
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