| /* |
| * QEMU rocker switch emulation - PCI device |
| * |
| * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com> |
| * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us> |
| * |
| * 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. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "hw/hw.h" |
| #include "hw/pci/pci.h" |
| #include "hw/pci/msix.h" |
| #include "net/net.h" |
| #include "net/eth.h" |
| #include "qapi/error.h" |
| #include "qapi/qapi-commands-rocker.h" |
| #include "qemu/iov.h" |
| #include "qemu/bitops.h" |
| |
| #include "rocker.h" |
| #include "rocker_hw.h" |
| #include "rocker_fp.h" |
| #include "rocker_desc.h" |
| #include "rocker_tlv.h" |
| #include "rocker_world.h" |
| #include "rocker_of_dpa.h" |
| |
| struct rocker { |
| /* private */ |
| PCIDevice parent_obj; |
| /* public */ |
| |
| MemoryRegion mmio; |
| MemoryRegion msix_bar; |
| |
| /* switch configuration */ |
| char *name; /* switch name */ |
| char *world_name; /* world name */ |
| uint32_t fp_ports; /* front-panel port count */ |
| NICPeers *fp_ports_peers; |
| MACAddr fp_start_macaddr; /* front-panel port 0 mac addr */ |
| uint64_t switch_id; /* switch id */ |
| |
| /* front-panel ports */ |
| FpPort *fp_port[ROCKER_FP_PORTS_MAX]; |
| |
| /* register backings */ |
| uint32_t test_reg; |
| uint64_t test_reg64; |
| dma_addr_t test_dma_addr; |
| uint32_t test_dma_size; |
| uint64_t lower32; /* lower 32-bit val in 2-part 64-bit access */ |
| |
| /* desc rings */ |
| DescRing **rings; |
| |
| /* switch worlds */ |
| World *worlds[ROCKER_WORLD_TYPE_MAX]; |
| World *world_dflt; |
| |
| QLIST_ENTRY(rocker) next; |
| }; |
| |
| #define TYPE_ROCKER "rocker" |
| |
| #define ROCKER(obj) \ |
| OBJECT_CHECK(Rocker, (obj), TYPE_ROCKER) |
| |
| static QLIST_HEAD(, rocker) rockers; |
| |
| Rocker *rocker_find(const char *name) |
| { |
| Rocker *r; |
| |
| QLIST_FOREACH(r, &rockers, next) |
| if (strcmp(r->name, name) == 0) { |
| return r; |
| } |
| |
| return NULL; |
| } |
| |
| World *rocker_get_world(Rocker *r, enum rocker_world_type type) |
| { |
| if (type < ROCKER_WORLD_TYPE_MAX) { |
| return r->worlds[type]; |
| } |
| return NULL; |
| } |
| |
| RockerSwitch *qmp_query_rocker(const char *name, Error **errp) |
| { |
| RockerSwitch *rocker; |
| Rocker *r; |
| |
| r = rocker_find(name); |
| if (!r) { |
| error_setg(errp, "rocker %s not found", name); |
| return NULL; |
| } |
| |
| rocker = g_new0(RockerSwitch, 1); |
| rocker->name = g_strdup(r->name); |
| rocker->id = r->switch_id; |
| rocker->ports = r->fp_ports; |
| |
| return rocker; |
| } |
| |
| RockerPortList *qmp_query_rocker_ports(const char *name, Error **errp) |
| { |
| RockerPortList *list = NULL; |
| Rocker *r; |
| int i; |
| |
| r = rocker_find(name); |
| if (!r) { |
| error_setg(errp, "rocker %s not found", name); |
| return NULL; |
| } |
| |
| for (i = r->fp_ports - 1; i >= 0; i--) { |
| RockerPortList *info = g_malloc0(sizeof(*info)); |
| info->value = g_malloc0(sizeof(*info->value)); |
| struct fp_port *port = r->fp_port[i]; |
| |
| fp_port_get_info(port, info); |
| info->next = list; |
| list = info; |
| } |
| |
| return list; |
| } |
| |
| uint32_t rocker_fp_ports(Rocker *r) |
| { |
| return r->fp_ports; |
| } |
| |
| static uint32_t rocker_get_pport_by_tx_ring(Rocker *r, |
| DescRing *ring) |
| { |
| return (desc_ring_index(ring) - 2) / 2 + 1; |
| } |
| |
| static int tx_consume(Rocker *r, DescInfo *info) |
| { |
| PCIDevice *dev = PCI_DEVICE(r); |
| char *buf = desc_get_buf(info, true); |
| RockerTlv *tlv_frag; |
| RockerTlv *tlvs[ROCKER_TLV_TX_MAX + 1]; |
| struct iovec iov[ROCKER_TX_FRAGS_MAX] = { { 0, }, }; |
| uint32_t pport; |
| uint32_t port; |
| uint16_t tx_offload = ROCKER_TX_OFFLOAD_NONE; |
| uint16_t tx_l3_csum_off = 0; |
| uint16_t tx_tso_mss = 0; |
| uint16_t tx_tso_hdr_len = 0; |
| int iovcnt = 0; |
| int err = ROCKER_OK; |
| int rem; |
| int i; |
| |
| if (!buf) { |
| return -ROCKER_ENXIO; |
| } |
| |
| rocker_tlv_parse(tlvs, ROCKER_TLV_TX_MAX, buf, desc_tlv_size(info)); |
| |
| if (!tlvs[ROCKER_TLV_TX_FRAGS]) { |
| return -ROCKER_EINVAL; |
| } |
| |
| pport = rocker_get_pport_by_tx_ring(r, desc_get_ring(info)); |
| if (!fp_port_from_pport(pport, &port)) { |
| return -ROCKER_EINVAL; |
| } |
| |
| if (tlvs[ROCKER_TLV_TX_OFFLOAD]) { |
| tx_offload = rocker_tlv_get_u8(tlvs[ROCKER_TLV_TX_OFFLOAD]); |
| } |
| |
| switch (tx_offload) { |
| case ROCKER_TX_OFFLOAD_L3_CSUM: |
| if (!tlvs[ROCKER_TLV_TX_L3_CSUM_OFF]) { |
| return -ROCKER_EINVAL; |
| } |
| break; |
| case ROCKER_TX_OFFLOAD_TSO: |
| if (!tlvs[ROCKER_TLV_TX_TSO_MSS] || |
| !tlvs[ROCKER_TLV_TX_TSO_HDR_LEN]) { |
| return -ROCKER_EINVAL; |
| } |
| break; |
| } |
| |
| if (tlvs[ROCKER_TLV_TX_L3_CSUM_OFF]) { |
| tx_l3_csum_off = rocker_tlv_get_le16(tlvs[ROCKER_TLV_TX_L3_CSUM_OFF]); |
| } |
| |
| if (tlvs[ROCKER_TLV_TX_TSO_MSS]) { |
| tx_tso_mss = rocker_tlv_get_le16(tlvs[ROCKER_TLV_TX_TSO_MSS]); |
| } |
| |
| if (tlvs[ROCKER_TLV_TX_TSO_HDR_LEN]) { |
| tx_tso_hdr_len = rocker_tlv_get_le16(tlvs[ROCKER_TLV_TX_TSO_HDR_LEN]); |
| } |
| |
| rocker_tlv_for_each_nested(tlv_frag, tlvs[ROCKER_TLV_TX_FRAGS], rem) { |
| hwaddr frag_addr; |
| uint16_t frag_len; |
| |
| if (rocker_tlv_type(tlv_frag) != ROCKER_TLV_TX_FRAG) { |
| err = -ROCKER_EINVAL; |
| goto err_bad_attr; |
| } |
| |
| rocker_tlv_parse_nested(tlvs, ROCKER_TLV_TX_FRAG_ATTR_MAX, tlv_frag); |
| |
| if (!tlvs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] || |
| !tlvs[ROCKER_TLV_TX_FRAG_ATTR_LEN]) { |
| err = -ROCKER_EINVAL; |
| goto err_bad_attr; |
| } |
| |
| frag_addr = rocker_tlv_get_le64(tlvs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]); |
| frag_len = rocker_tlv_get_le16(tlvs[ROCKER_TLV_TX_FRAG_ATTR_LEN]); |
| |
| if (iovcnt >= ROCKER_TX_FRAGS_MAX) { |
| goto err_too_many_frags; |
| } |
| iov[iovcnt].iov_len = frag_len; |
| iov[iovcnt].iov_base = g_malloc(frag_len); |
| |
| pci_dma_read(dev, frag_addr, iov[iovcnt].iov_base, |
| iov[iovcnt].iov_len); |
| |
| iovcnt++; |
| } |
| |
| if (iovcnt) { |
| /* XXX perform Tx offloads */ |
| /* XXX silence compiler for now */ |
| tx_l3_csum_off += tx_tso_mss = tx_tso_hdr_len = 0; |
| } |
| |
| err = fp_port_eg(r->fp_port[port], iov, iovcnt); |
| |
| err_too_many_frags: |
| err_bad_attr: |
| for (i = 0; i < ROCKER_TX_FRAGS_MAX; i++) { |
| g_free(iov[i].iov_base); |
| } |
| |
| return err; |
| } |
| |
| static int cmd_get_port_settings(Rocker *r, |
| DescInfo *info, char *buf, |
| RockerTlv *cmd_info_tlv) |
| { |
| RockerTlv *tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; |
| RockerTlv *nest; |
| FpPort *fp_port; |
| uint32_t pport; |
| uint32_t port; |
| uint32_t speed; |
| uint8_t duplex; |
| uint8_t autoneg; |
| uint8_t learning; |
| char *phys_name; |
| MACAddr macaddr; |
| enum rocker_world_type mode; |
| size_t tlv_size; |
| int pos; |
| int err; |
| |
| rocker_tlv_parse_nested(tlvs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, |
| cmd_info_tlv); |
| |
| if (!tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_PPORT]) { |
| return -ROCKER_EINVAL; |
| } |
| |
| pport = rocker_tlv_get_le32(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_PPORT]); |
| if (!fp_port_from_pport(pport, &port)) { |
| return -ROCKER_EINVAL; |
| } |
| fp_port = r->fp_port[port]; |
| |
| err = fp_port_get_settings(fp_port, &speed, &duplex, &autoneg); |
| if (err) { |
| return err; |
| } |
| |
| fp_port_get_macaddr(fp_port, &macaddr); |
| mode = world_type(fp_port_get_world(fp_port)); |
| learning = fp_port_get_learning(fp_port); |
| phys_name = fp_port_get_name(fp_port); |
| |
| tlv_size = rocker_tlv_total_size(0) + /* nest */ |
| rocker_tlv_total_size(sizeof(uint32_t)) + /* pport */ |
| rocker_tlv_total_size(sizeof(uint32_t)) + /* speed */ |
| rocker_tlv_total_size(sizeof(uint8_t)) + /* duplex */ |
| rocker_tlv_total_size(sizeof(uint8_t)) + /* autoneg */ |
| rocker_tlv_total_size(sizeof(macaddr.a)) + /* macaddr */ |
| rocker_tlv_total_size(sizeof(uint8_t)) + /* mode */ |
| rocker_tlv_total_size(sizeof(uint8_t)) + /* learning */ |
| rocker_tlv_total_size(strlen(phys_name)); |
| |
| if (tlv_size > desc_buf_size(info)) { |
| return -ROCKER_EMSGSIZE; |
| } |
| |
| pos = 0; |
| nest = rocker_tlv_nest_start(buf, &pos, ROCKER_TLV_CMD_INFO); |
| rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, pport); |
| rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED, speed); |
| rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX, duplex); |
| rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG, autoneg); |
| rocker_tlv_put(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, |
| sizeof(macaddr.a), macaddr.a); |
| rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_MODE, mode); |
| rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING, |
| learning); |
| rocker_tlv_put(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME, |
| strlen(phys_name), phys_name); |
| rocker_tlv_nest_end(buf, &pos, nest); |
| |
| return desc_set_buf(info, tlv_size); |
| } |
| |
| static int cmd_set_port_settings(Rocker *r, |
| RockerTlv *cmd_info_tlv) |
| { |
| RockerTlv *tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; |
| FpPort *fp_port; |
| uint32_t pport; |
| uint32_t port; |
| uint32_t speed; |
| uint8_t duplex; |
| uint8_t autoneg; |
| uint8_t learning; |
| MACAddr macaddr; |
| enum rocker_world_type mode; |
| int err; |
| |
| rocker_tlv_parse_nested(tlvs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, |
| cmd_info_tlv); |
| |
| if (!tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_PPORT]) { |
| return -ROCKER_EINVAL; |
| } |
| |
| pport = rocker_tlv_get_le32(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_PPORT]); |
| if (!fp_port_from_pport(pport, &port)) { |
| return -ROCKER_EINVAL; |
| } |
| fp_port = r->fp_port[port]; |
| |
| if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] && |
| tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] && |
| tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]) { |
| |
| speed = rocker_tlv_get_le32(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]); |
| duplex = rocker_tlv_get_u8(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]); |
| autoneg = rocker_tlv_get_u8(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]); |
| |
| err = fp_port_set_settings(fp_port, speed, duplex, autoneg); |
| if (err) { |
| return err; |
| } |
| } |
| |
| if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]) { |
| if (rocker_tlv_len(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]) != |
| sizeof(macaddr.a)) { |
| return -ROCKER_EINVAL; |
| } |
| memcpy(macaddr.a, |
| rocker_tlv_data(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]), |
| sizeof(macaddr.a)); |
| fp_port_set_macaddr(fp_port, &macaddr); |
| } |
| |
| if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]) { |
| mode = rocker_tlv_get_u8(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]); |
| if (mode >= ROCKER_WORLD_TYPE_MAX) { |
| return -ROCKER_EINVAL; |
| } |
| /* We don't support world change. */ |
| if (!fp_port_check_world(fp_port, r->worlds[mode])) { |
| return -ROCKER_EINVAL; |
| } |
| } |
| |
| if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING]) { |
| learning = |
| rocker_tlv_get_u8(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING]); |
| fp_port_set_learning(fp_port, learning); |
| } |
| |
| return ROCKER_OK; |
| } |
| |
| static int cmd_consume(Rocker *r, DescInfo *info) |
| { |
| char *buf = desc_get_buf(info, false); |
| RockerTlv *tlvs[ROCKER_TLV_CMD_MAX + 1]; |
| RockerTlv *info_tlv; |
| World *world; |
| uint16_t cmd; |
| int err; |
| |
| if (!buf) { |
| return -ROCKER_ENXIO; |
| } |
| |
| rocker_tlv_parse(tlvs, ROCKER_TLV_CMD_MAX, buf, desc_tlv_size(info)); |
| |
| if (!tlvs[ROCKER_TLV_CMD_TYPE] || !tlvs[ROCKER_TLV_CMD_INFO]) { |
| return -ROCKER_EINVAL; |
| } |
| |
| cmd = rocker_tlv_get_le16(tlvs[ROCKER_TLV_CMD_TYPE]); |
| info_tlv = tlvs[ROCKER_TLV_CMD_INFO]; |
| |
| /* This might be reworked to something like this: |
| * Every world will have an array of command handlers from |
| * ROCKER_TLV_CMD_TYPE_UNSPEC to ROCKER_TLV_CMD_TYPE_MAX. There is |
| * up to each world to implement whatever command it want. |
| * It can reference "generic" commands as cmd_set_port_settings or |
| * cmd_get_port_settings |
| */ |
| |
| switch (cmd) { |
| case ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD: |
| case ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD: |
| case ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL: |
| case ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_GET_STATS: |
| case ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD: |
| case ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD: |
| case ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL: |
| case ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_GET_STATS: |
| world = r->worlds[ROCKER_WORLD_TYPE_OF_DPA]; |
| err = world_do_cmd(world, info, buf, cmd, info_tlv); |
| break; |
| case ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS: |
| err = cmd_get_port_settings(r, info, buf, info_tlv); |
| break; |
| case ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS: |
| err = cmd_set_port_settings(r, info_tlv); |
| break; |
| default: |
| err = -ROCKER_EINVAL; |
| break; |
| } |
| |
| return err; |
| } |
| |
| static void rocker_msix_irq(Rocker *r, unsigned vector) |
| { |
| PCIDevice *dev = PCI_DEVICE(r); |
| |
| DPRINTF("MSI-X notify request for vector %d\n", vector); |
| if (vector >= ROCKER_MSIX_VEC_COUNT(r->fp_ports)) { |
| DPRINTF("incorrect vector %d\n", vector); |
| return; |
| } |
| msix_notify(dev, vector); |
| } |
| |
| int rocker_event_link_changed(Rocker *r, uint32_t pport, bool link_up) |
| { |
| DescRing *ring = r->rings[ROCKER_RING_EVENT]; |
| DescInfo *info = desc_ring_fetch_desc(ring); |
| RockerTlv *nest; |
| char *buf; |
| size_t tlv_size; |
| int pos; |
| int err; |
| |
| if (!info) { |
| return -ROCKER_ENOBUFS; |
| } |
| |
| tlv_size = rocker_tlv_total_size(sizeof(uint16_t)) + /* event type */ |
| rocker_tlv_total_size(0) + /* nest */ |
| rocker_tlv_total_size(sizeof(uint32_t)) + /* pport */ |
| rocker_tlv_total_size(sizeof(uint8_t)); /* link up */ |
| |
| if (tlv_size > desc_buf_size(info)) { |
| err = -ROCKER_EMSGSIZE; |
| goto err_too_big; |
| } |
| |
| buf = desc_get_buf(info, false); |
| if (!buf) { |
| err = -ROCKER_ENOMEM; |
| goto err_no_mem; |
| } |
| |
| pos = 0; |
| rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_EVENT_TYPE, |
| ROCKER_TLV_EVENT_TYPE_LINK_CHANGED); |
| nest = rocker_tlv_nest_start(buf, &pos, ROCKER_TLV_EVENT_INFO); |
| rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_EVENT_LINK_CHANGED_PPORT, pport); |
| rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP, |
| link_up ? 1 : 0); |
| rocker_tlv_nest_end(buf, &pos, nest); |
| |
| err = desc_set_buf(info, tlv_size); |
| |
| err_too_big: |
| err_no_mem: |
| if (desc_ring_post_desc(ring, err)) { |
| rocker_msix_irq(r, ROCKER_MSIX_VEC_EVENT); |
| } |
| |
| return err; |
| } |
| |
| int rocker_event_mac_vlan_seen(Rocker *r, uint32_t pport, uint8_t *addr, |
| uint16_t vlan_id) |
| { |
| DescRing *ring = r->rings[ROCKER_RING_EVENT]; |
| DescInfo *info; |
| FpPort *fp_port; |
| uint32_t port; |
| RockerTlv *nest; |
| char *buf; |
| size_t tlv_size; |
| int pos; |
| int err; |
| |
| if (!fp_port_from_pport(pport, &port)) { |
| return -ROCKER_EINVAL; |
| } |
| fp_port = r->fp_port[port]; |
| if (!fp_port_get_learning(fp_port)) { |
| return ROCKER_OK; |
| } |
| |
| info = desc_ring_fetch_desc(ring); |
| if (!info) { |
| return -ROCKER_ENOBUFS; |
| } |
| |
| tlv_size = rocker_tlv_total_size(sizeof(uint16_t)) + /* event type */ |
| rocker_tlv_total_size(0) + /* nest */ |
| rocker_tlv_total_size(sizeof(uint32_t)) + /* pport */ |
| rocker_tlv_total_size(ETH_ALEN) + /* mac addr */ |
| rocker_tlv_total_size(sizeof(uint16_t)); /* vlan_id */ |
| |
| if (tlv_size > desc_buf_size(info)) { |
| err = -ROCKER_EMSGSIZE; |
| goto err_too_big; |
| } |
| |
| buf = desc_get_buf(info, false); |
| if (!buf) { |
| err = -ROCKER_ENOMEM; |
| goto err_no_mem; |
| } |
| |
| pos = 0; |
| rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_EVENT_TYPE, |
| ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN); |
| nest = rocker_tlv_nest_start(buf, &pos, ROCKER_TLV_EVENT_INFO); |
| rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_EVENT_MAC_VLAN_PPORT, pport); |
| rocker_tlv_put(buf, &pos, ROCKER_TLV_EVENT_MAC_VLAN_MAC, ETH_ALEN, addr); |
| rocker_tlv_put_u16(buf, &pos, ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID, vlan_id); |
| rocker_tlv_nest_end(buf, &pos, nest); |
| |
| err = desc_set_buf(info, tlv_size); |
| |
| err_too_big: |
| err_no_mem: |
| if (desc_ring_post_desc(ring, err)) { |
| rocker_msix_irq(r, ROCKER_MSIX_VEC_EVENT); |
| } |
| |
| return err; |
| } |
| |
| static DescRing *rocker_get_rx_ring_by_pport(Rocker *r, |
| uint32_t pport) |
| { |
| return r->rings[(pport - 1) * 2 + 3]; |
| } |
| |
| int rx_produce(World *world, uint32_t pport, |
| const struct iovec *iov, int iovcnt, uint8_t copy_to_cpu) |
| { |
| Rocker *r = world_rocker(world); |
| PCIDevice *dev = (PCIDevice *)r; |
| DescRing *ring = rocker_get_rx_ring_by_pport(r, pport); |
| DescInfo *info = desc_ring_fetch_desc(ring); |
| char *data; |
| size_t data_size = iov_size(iov, iovcnt); |
| char *buf; |
| uint16_t rx_flags = 0; |
| uint16_t rx_csum = 0; |
| size_t tlv_size; |
| RockerTlv *tlvs[ROCKER_TLV_RX_MAX + 1]; |
| hwaddr frag_addr; |
| uint16_t frag_max_len; |
| int pos; |
| int err; |
| |
| if (!info) { |
| return -ROCKER_ENOBUFS; |
| } |
| |
| buf = desc_get_buf(info, false); |
| if (!buf) { |
| err = -ROCKER_ENXIO; |
| goto out; |
| } |
| rocker_tlv_parse(tlvs, ROCKER_TLV_RX_MAX, buf, desc_tlv_size(info)); |
| |
| if (!tlvs[ROCKER_TLV_RX_FRAG_ADDR] || |
| !tlvs[ROCKER_TLV_RX_FRAG_MAX_LEN]) { |
| err = -ROCKER_EINVAL; |
| goto out; |
| } |
| |
| frag_addr = rocker_tlv_get_le64(tlvs[ROCKER_TLV_RX_FRAG_ADDR]); |
| frag_max_len = rocker_tlv_get_le16(tlvs[ROCKER_TLV_RX_FRAG_MAX_LEN]); |
| |
| if (data_size > frag_max_len) { |
| err = -ROCKER_EMSGSIZE; |
| goto out; |
| } |
| |
| if (copy_to_cpu) { |
| rx_flags |= ROCKER_RX_FLAGS_FWD_OFFLOAD; |
| } |
| |
| /* XXX calc rx flags/csum */ |
| |
| tlv_size = rocker_tlv_total_size(sizeof(uint16_t)) + /* flags */ |
| rocker_tlv_total_size(sizeof(uint16_t)) + /* scum */ |
| rocker_tlv_total_size(sizeof(uint64_t)) + /* frag addr */ |
| rocker_tlv_total_size(sizeof(uint16_t)) + /* frag max len */ |
| rocker_tlv_total_size(sizeof(uint16_t)); /* frag len */ |
| |
| if (tlv_size > desc_buf_size(info)) { |
| err = -ROCKER_EMSGSIZE; |
| goto out; |
| } |
| |
| /* TODO: |
| * iov dma write can be optimized in similar way e1000 does it in |
| * e1000_receive_iov. But maybe if would make sense to introduce |
| * generic helper iov_dma_write. |
| */ |
| |
| data = g_malloc(data_size); |
| |
| iov_to_buf(iov, iovcnt, 0, data, data_size); |
| pci_dma_write(dev, frag_addr, data, data_size); |
| g_free(data); |
| |
| pos = 0; |
| rocker_tlv_put_le16(buf, &pos, ROCKER_TLV_RX_FLAGS, rx_flags); |
| rocker_tlv_put_le16(buf, &pos, ROCKER_TLV_RX_CSUM, rx_csum); |
| rocker_tlv_put_le64(buf, &pos, ROCKER_TLV_RX_FRAG_ADDR, frag_addr); |
| rocker_tlv_put_le16(buf, &pos, ROCKER_TLV_RX_FRAG_MAX_LEN, frag_max_len); |
| rocker_tlv_put_le16(buf, &pos, ROCKER_TLV_RX_FRAG_LEN, data_size); |
| |
| err = desc_set_buf(info, tlv_size); |
| |
| out: |
| if (desc_ring_post_desc(ring, err)) { |
| rocker_msix_irq(r, ROCKER_MSIX_VEC_RX(pport - 1)); |
| } |
| |
| return err; |
| } |
| |
| int rocker_port_eg(Rocker *r, uint32_t pport, |
| const struct iovec *iov, int iovcnt) |
| { |
| FpPort *fp_port; |
| uint32_t port; |
| |
| if (!fp_port_from_pport(pport, &port)) { |
| return -ROCKER_EINVAL; |
| } |
| |
| fp_port = r->fp_port[port]; |
| |
| return fp_port_eg(fp_port, iov, iovcnt); |
| } |
| |
| static void rocker_test_dma_ctrl(Rocker *r, uint32_t val) |
| { |
| PCIDevice *dev = PCI_DEVICE(r); |
| char *buf; |
| int i; |
| |
| buf = g_malloc(r->test_dma_size); |
| |
| switch (val) { |
| case ROCKER_TEST_DMA_CTRL_CLEAR: |
| memset(buf, 0, r->test_dma_size); |
| break; |
| case ROCKER_TEST_DMA_CTRL_FILL: |
| memset(buf, 0x96, r->test_dma_size); |
| break; |
| case ROCKER_TEST_DMA_CTRL_INVERT: |
| pci_dma_read(dev, r->test_dma_addr, buf, r->test_dma_size); |
| for (i = 0; i < r->test_dma_size; i++) { |
| buf[i] = ~buf[i]; |
| } |
| break; |
| default: |
| DPRINTF("not test dma control val=0x%08x\n", val); |
| goto err_out; |
| } |
| pci_dma_write(dev, r->test_dma_addr, buf, r->test_dma_size); |
| |
| rocker_msix_irq(r, ROCKER_MSIX_VEC_TEST); |
| |
| err_out: |
| g_free(buf); |
| } |
| |
| static void rocker_reset(DeviceState *dev); |
| |
| static void rocker_control(Rocker *r, uint32_t val) |
| { |
| if (val & ROCKER_CONTROL_RESET) { |
| rocker_reset(DEVICE(r)); |
| } |
| } |
| |
| static int rocker_pci_ring_count(Rocker *r) |
| { |
| /* There are: |
| * - command ring |
| * - event ring |
| * - tx and rx ring per each port |
| */ |
| return 2 + (2 * r->fp_ports); |
| } |
| |
| static bool rocker_addr_is_desc_reg(Rocker *r, hwaddr addr) |
| { |
| hwaddr start = ROCKER_DMA_DESC_BASE; |
| hwaddr end = start + (ROCKER_DMA_DESC_SIZE * rocker_pci_ring_count(r)); |
| |
| return addr >= start && addr < end; |
| } |
| |
| static void rocker_port_phys_enable_write(Rocker *r, uint64_t new) |
| { |
| int i; |
| bool old_enabled; |
| bool new_enabled; |
| FpPort *fp_port; |
| |
| for (i = 0; i < r->fp_ports; i++) { |
| fp_port = r->fp_port[i]; |
| old_enabled = fp_port_enabled(fp_port); |
| new_enabled = (new >> (i + 1)) & 0x1; |
| if (new_enabled == old_enabled) { |
| continue; |
| } |
| if (new_enabled) { |
| fp_port_enable(r->fp_port[i]); |
| } else { |
| fp_port_disable(r->fp_port[i]); |
| } |
| } |
| } |
| |
| static void rocker_io_writel(void *opaque, hwaddr addr, uint32_t val) |
| { |
| Rocker *r = opaque; |
| |
| if (rocker_addr_is_desc_reg(r, addr)) { |
| unsigned index = ROCKER_RING_INDEX(addr); |
| unsigned offset = addr & ROCKER_DMA_DESC_MASK; |
| |
| switch (offset) { |
| case ROCKER_DMA_DESC_ADDR_OFFSET: |
| r->lower32 = (uint64_t)val; |
| break; |
| case ROCKER_DMA_DESC_ADDR_OFFSET + 4: |
| desc_ring_set_base_addr(r->rings[index], |
| ((uint64_t)val) << 32 | r->lower32); |
| r->lower32 = 0; |
| break; |
| case ROCKER_DMA_DESC_SIZE_OFFSET: |
| desc_ring_set_size(r->rings[index], val); |
| break; |
| case ROCKER_DMA_DESC_HEAD_OFFSET: |
| if (desc_ring_set_head(r->rings[index], val)) { |
| rocker_msix_irq(r, desc_ring_get_msix_vector(r->rings[index])); |
| } |
| break; |
| case ROCKER_DMA_DESC_CTRL_OFFSET: |
| desc_ring_set_ctrl(r->rings[index], val); |
| break; |
| case ROCKER_DMA_DESC_CREDITS_OFFSET: |
| if (desc_ring_ret_credits(r->rings[index], val)) { |
| rocker_msix_irq(r, desc_ring_get_msix_vector(r->rings[index])); |
| } |
| break; |
| default: |
| DPRINTF("not implemented dma reg write(l) addr=0x" TARGET_FMT_plx |
| " val=0x%08x (ring %d, addr=0x%02x)\n", |
| addr, val, index, offset); |
| break; |
| } |
| return; |
| } |
| |
| switch (addr) { |
| case ROCKER_TEST_REG: |
| r->test_reg = val; |
| break; |
| case ROCKER_TEST_REG64: |
| case ROCKER_TEST_DMA_ADDR: |
| case ROCKER_PORT_PHYS_ENABLE: |
| r->lower32 = (uint64_t)val; |
| break; |
| case ROCKER_TEST_REG64 + 4: |
| r->test_reg64 = ((uint64_t)val) << 32 | r->lower32; |
| r->lower32 = 0; |
| break; |
| case ROCKER_TEST_IRQ: |
| rocker_msix_irq(r, val); |
| break; |
| case ROCKER_TEST_DMA_SIZE: |
| r->test_dma_size = val & 0xFFFF; |
| break; |
| case ROCKER_TEST_DMA_ADDR + 4: |
| r->test_dma_addr = ((uint64_t)val) << 32 | r->lower32; |
| r->lower32 = 0; |
| break; |
| case ROCKER_TEST_DMA_CTRL: |
| rocker_test_dma_ctrl(r, val); |
| break; |
| case ROCKER_CONTROL: |
| rocker_control(r, val); |
| break; |
| case ROCKER_PORT_PHYS_ENABLE + 4: |
| rocker_port_phys_enable_write(r, ((uint64_t)val) << 32 | r->lower32); |
| r->lower32 = 0; |
| break; |
| default: |
| DPRINTF("not implemented write(l) addr=0x" TARGET_FMT_plx |
| " val=0x%08x\n", addr, val); |
| break; |
| } |
| } |
| |
| static void rocker_io_writeq(void *opaque, hwaddr addr, uint64_t val) |
| { |
| Rocker *r = opaque; |
| |
| if (rocker_addr_is_desc_reg(r, addr)) { |
| unsigned index = ROCKER_RING_INDEX(addr); |
| unsigned offset = addr & ROCKER_DMA_DESC_MASK; |
| |
| switch (offset) { |
| case ROCKER_DMA_DESC_ADDR_OFFSET: |
| desc_ring_set_base_addr(r->rings[index], val); |
| break; |
| default: |
| DPRINTF("not implemented dma reg write(q) addr=0x" TARGET_FMT_plx |
| " val=0x" TARGET_FMT_plx " (ring %d, offset=0x%02x)\n", |
| addr, val, index, offset); |
| break; |
| } |
| return; |
| } |
| |
| switch (addr) { |
| case ROCKER_TEST_REG64: |
| r->test_reg64 = val; |
| break; |
| case ROCKER_TEST_DMA_ADDR: |
| r->test_dma_addr = val; |
| break; |
| case ROCKER_PORT_PHYS_ENABLE: |
| rocker_port_phys_enable_write(r, val); |
| break; |
| default: |
| DPRINTF("not implemented write(q) addr=0x" TARGET_FMT_plx |
| " val=0x" TARGET_FMT_plx "\n", addr, val); |
| break; |
| } |
| } |
| |
| #ifdef DEBUG_ROCKER |
| #define regname(reg) case (reg): return #reg |
| static const char *rocker_reg_name(void *opaque, hwaddr addr) |
| { |
| Rocker *r = opaque; |
| |
| if (rocker_addr_is_desc_reg(r, addr)) { |
| unsigned index = ROCKER_RING_INDEX(addr); |
| unsigned offset = addr & ROCKER_DMA_DESC_MASK; |
| static char buf[100]; |
| char ring_name[10]; |
| |
| switch (index) { |
| case 0: |
| sprintf(ring_name, "cmd"); |
| break; |
| case 1: |
| sprintf(ring_name, "event"); |
| break; |
| default: |
| sprintf(ring_name, "%s-%d", index % 2 ? "rx" : "tx", |
| (index - 2) / 2); |
| } |
| |
| switch (offset) { |
| case ROCKER_DMA_DESC_ADDR_OFFSET: |
| sprintf(buf, "Ring[%s] ADDR", ring_name); |
| return buf; |
| case ROCKER_DMA_DESC_ADDR_OFFSET+4: |
| sprintf(buf, "Ring[%s] ADDR+4", ring_name); |
| return buf; |
| case ROCKER_DMA_DESC_SIZE_OFFSET: |
| sprintf(buf, "Ring[%s] SIZE", ring_name); |
| return buf; |
| case ROCKER_DMA_DESC_HEAD_OFFSET: |
| sprintf(buf, "Ring[%s] HEAD", ring_name); |
| return buf; |
| case ROCKER_DMA_DESC_TAIL_OFFSET: |
| sprintf(buf, "Ring[%s] TAIL", ring_name); |
| return buf; |
| case ROCKER_DMA_DESC_CTRL_OFFSET: |
| sprintf(buf, "Ring[%s] CTRL", ring_name); |
| return buf; |
| case ROCKER_DMA_DESC_CREDITS_OFFSET: |
| sprintf(buf, "Ring[%s] CREDITS", ring_name); |
| return buf; |
| default: |
| sprintf(buf, "Ring[%s] ???", ring_name); |
| return buf; |
| } |
| } else { |
| switch (addr) { |
| regname(ROCKER_BOGUS_REG0); |
| regname(ROCKER_BOGUS_REG1); |
| regname(ROCKER_BOGUS_REG2); |
| regname(ROCKER_BOGUS_REG3); |
| regname(ROCKER_TEST_REG); |
| regname(ROCKER_TEST_REG64); |
| regname(ROCKER_TEST_REG64+4); |
| regname(ROCKER_TEST_IRQ); |
| regname(ROCKER_TEST_DMA_ADDR); |
| regname(ROCKER_TEST_DMA_ADDR+4); |
| regname(ROCKER_TEST_DMA_SIZE); |
| regname(ROCKER_TEST_DMA_CTRL); |
| regname(ROCKER_CONTROL); |
| regname(ROCKER_PORT_PHYS_COUNT); |
| regname(ROCKER_PORT_PHYS_LINK_STATUS); |
| regname(ROCKER_PORT_PHYS_LINK_STATUS+4); |
| regname(ROCKER_PORT_PHYS_ENABLE); |
| regname(ROCKER_PORT_PHYS_ENABLE+4); |
| regname(ROCKER_SWITCH_ID); |
| regname(ROCKER_SWITCH_ID+4); |
| } |
| } |
| return "???"; |
| } |
| #else |
| static const char *rocker_reg_name(void *opaque, hwaddr addr) |
| { |
| return NULL; |
| } |
| #endif |
| |
| static void rocker_mmio_write(void *opaque, hwaddr addr, uint64_t val, |
| unsigned size) |
| { |
| DPRINTF("Write %s addr " TARGET_FMT_plx |
| ", size %u, val " TARGET_FMT_plx "\n", |
| rocker_reg_name(opaque, addr), addr, size, val); |
| |
| switch (size) { |
| case 4: |
| rocker_io_writel(opaque, addr, val); |
| break; |
| case 8: |
| rocker_io_writeq(opaque, addr, val); |
| break; |
| } |
| } |
| |
| static uint64_t rocker_port_phys_link_status(Rocker *r) |
| { |
| int i; |
| uint64_t status = 0; |
| |
| for (i = 0; i < r->fp_ports; i++) { |
| FpPort *port = r->fp_port[i]; |
| |
| if (fp_port_get_link_up(port)) { |
| status |= 1 << (i + 1); |
| } |
| } |
| return status; |
| } |
| |
| static uint64_t rocker_port_phys_enable_read(Rocker *r) |
| { |
| int i; |
| uint64_t ret = 0; |
| |
| for (i = 0; i < r->fp_ports; i++) { |
| FpPort *port = r->fp_port[i]; |
| |
| if (fp_port_enabled(port)) { |
| ret |= 1 << (i + 1); |
| } |
| } |
| return ret; |
| } |
| |
| static uint32_t rocker_io_readl(void *opaque, hwaddr addr) |
| { |
| Rocker *r = opaque; |
| uint32_t ret; |
| |
| if (rocker_addr_is_desc_reg(r, addr)) { |
| unsigned index = ROCKER_RING_INDEX(addr); |
| unsigned offset = addr & ROCKER_DMA_DESC_MASK; |
| |
| switch (offset) { |
| case ROCKER_DMA_DESC_ADDR_OFFSET: |
| ret = (uint32_t)desc_ring_get_base_addr(r->rings[index]); |
| break; |
| case ROCKER_DMA_DESC_ADDR_OFFSET + 4: |
| ret = (uint32_t)(desc_ring_get_base_addr(r->rings[index]) >> 32); |
| break; |
| case ROCKER_DMA_DESC_SIZE_OFFSET: |
| ret = desc_ring_get_size(r->rings[index]); |
| break; |
| case ROCKER_DMA_DESC_HEAD_OFFSET: |
| ret = desc_ring_get_head(r->rings[index]); |
| break; |
| case ROCKER_DMA_DESC_TAIL_OFFSET: |
| ret = desc_ring_get_tail(r->rings[index]); |
| break; |
| case ROCKER_DMA_DESC_CREDITS_OFFSET: |
| ret = desc_ring_get_credits(r->rings[index]); |
| break; |
| default: |
| DPRINTF("not implemented dma reg read(l) addr=0x" TARGET_FMT_plx |
| " (ring %d, addr=0x%02x)\n", addr, index, offset); |
| ret = 0; |
| break; |
| } |
| return ret; |
| } |
| |
| switch (addr) { |
| case ROCKER_BOGUS_REG0: |
| case ROCKER_BOGUS_REG1: |
| case ROCKER_BOGUS_REG2: |
| case ROCKER_BOGUS_REG3: |
| ret = 0xDEADBABE; |
| break; |
| case ROCKER_TEST_REG: |
| ret = r->test_reg * 2; |
| break; |
| case ROCKER_TEST_REG64: |
| ret = (uint32_t)(r->test_reg64 * 2); |
| break; |
| case ROCKER_TEST_REG64 + 4: |
| ret = (uint32_t)((r->test_reg64 * 2) >> 32); |
| break; |
| case ROCKER_TEST_DMA_SIZE: |
| ret = r->test_dma_size; |
| break; |
| case ROCKER_TEST_DMA_ADDR: |
| ret = (uint32_t)r->test_dma_addr; |
| break; |
| case ROCKER_TEST_DMA_ADDR + 4: |
| ret = (uint32_t)(r->test_dma_addr >> 32); |
| break; |
| case ROCKER_PORT_PHYS_COUNT: |
| ret = r->fp_ports; |
| break; |
| case ROCKER_PORT_PHYS_LINK_STATUS: |
| ret = (uint32_t)rocker_port_phys_link_status(r); |
| break; |
| case ROCKER_PORT_PHYS_LINK_STATUS + 4: |
| ret = (uint32_t)(rocker_port_phys_link_status(r) >> 32); |
| break; |
| case ROCKER_PORT_PHYS_ENABLE: |
| ret = (uint32_t)rocker_port_phys_enable_read(r); |
| break; |
| case ROCKER_PORT_PHYS_ENABLE + 4: |
| ret = (uint32_t)(rocker_port_phys_enable_read(r) >> 32); |
| break; |
| case ROCKER_SWITCH_ID: |
| ret = (uint32_t)r->switch_id; |
| break; |
| case ROCKER_SWITCH_ID + 4: |
| ret = (uint32_t)(r->switch_id >> 32); |
| break; |
| default: |
| DPRINTF("not implemented read(l) addr=0x" TARGET_FMT_plx "\n", addr); |
| ret = 0; |
| break; |
| } |
| return ret; |
| } |
| |
| static uint64_t rocker_io_readq(void *opaque, hwaddr addr) |
| { |
| Rocker *r = opaque; |
| uint64_t ret; |
| |
| if (rocker_addr_is_desc_reg(r, addr)) { |
| unsigned index = ROCKER_RING_INDEX(addr); |
| unsigned offset = addr & ROCKER_DMA_DESC_MASK; |
| |
| switch (addr & ROCKER_DMA_DESC_MASK) { |
| case ROCKER_DMA_DESC_ADDR_OFFSET: |
| ret = desc_ring_get_base_addr(r->rings[index]); |
| break; |
| default: |
| DPRINTF("not implemented dma reg read(q) addr=0x" TARGET_FMT_plx |
| " (ring %d, addr=0x%02x)\n", addr, index, offset); |
| ret = 0; |
| break; |
| } |
| return ret; |
| } |
| |
| switch (addr) { |
| case ROCKER_BOGUS_REG0: |
| case ROCKER_BOGUS_REG2: |
| ret = 0xDEADBABEDEADBABEULL; |
| break; |
| case ROCKER_TEST_REG64: |
| ret = r->test_reg64 * 2; |
| break; |
| case ROCKER_TEST_DMA_ADDR: |
| ret = r->test_dma_addr; |
| break; |
| case ROCKER_PORT_PHYS_LINK_STATUS: |
| ret = rocker_port_phys_link_status(r); |
| break; |
| case ROCKER_PORT_PHYS_ENABLE: |
| ret = rocker_port_phys_enable_read(r); |
| break; |
| case ROCKER_SWITCH_ID: |
| ret = r->switch_id; |
| break; |
| default: |
| DPRINTF("not implemented read(q) addr=0x" TARGET_FMT_plx "\n", addr); |
| ret = 0; |
| break; |
| } |
| return ret; |
| } |
| |
| static uint64_t rocker_mmio_read(void *opaque, hwaddr addr, unsigned size) |
| { |
| DPRINTF("Read %s addr " TARGET_FMT_plx ", size %u\n", |
| rocker_reg_name(opaque, addr), addr, size); |
| |
| switch (size) { |
| case 4: |
| return rocker_io_readl(opaque, addr); |
| case 8: |
| return rocker_io_readq(opaque, addr); |
| } |
| |
| return -1; |
| } |
| |
| static const MemoryRegionOps rocker_mmio_ops = { |
| .read = rocker_mmio_read, |
| .write = rocker_mmio_write, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| .valid = { |
| .min_access_size = 4, |
| .max_access_size = 8, |
| }, |
| .impl = { |
| .min_access_size = 4, |
| .max_access_size = 8, |
| }, |
| }; |
| |
| static void rocker_msix_vectors_unuse(Rocker *r, |
| unsigned int num_vectors) |
| { |
| PCIDevice *dev = PCI_DEVICE(r); |
| int i; |
| |
| for (i = 0; i < num_vectors; i++) { |
| msix_vector_unuse(dev, i); |
| } |
| } |
| |
| static int rocker_msix_vectors_use(Rocker *r, |
| unsigned int num_vectors) |
| { |
| PCIDevice *dev = PCI_DEVICE(r); |
| int err; |
| int i; |
| |
| for (i = 0; i < num_vectors; i++) { |
| err = msix_vector_use(dev, i); |
| if (err) { |
| goto rollback; |
| } |
| } |
| return 0; |
| |
| rollback: |
| rocker_msix_vectors_unuse(r, i); |
| return err; |
| } |
| |
| static int rocker_msix_init(Rocker *r, Error **errp) |
| { |
| PCIDevice *dev = PCI_DEVICE(r); |
| int err; |
| |
| err = msix_init(dev, ROCKER_MSIX_VEC_COUNT(r->fp_ports), |
| &r->msix_bar, |
| ROCKER_PCI_MSIX_BAR_IDX, ROCKER_PCI_MSIX_TABLE_OFFSET, |
| &r->msix_bar, |
| ROCKER_PCI_MSIX_BAR_IDX, ROCKER_PCI_MSIX_PBA_OFFSET, |
| 0, errp); |
| if (err) { |
| return err; |
| } |
| |
| err = rocker_msix_vectors_use(r, ROCKER_MSIX_VEC_COUNT(r->fp_ports)); |
| if (err) { |
| goto err_msix_vectors_use; |
| } |
| |
| return 0; |
| |
| err_msix_vectors_use: |
| msix_uninit(dev, &r->msix_bar, &r->msix_bar); |
| return err; |
| } |
| |
| static void rocker_msix_uninit(Rocker *r) |
| { |
| PCIDevice *dev = PCI_DEVICE(r); |
| |
| msix_uninit(dev, &r->msix_bar, &r->msix_bar); |
| rocker_msix_vectors_unuse(r, ROCKER_MSIX_VEC_COUNT(r->fp_ports)); |
| } |
| |
| static World *rocker_world_type_by_name(Rocker *r, const char *name) |
| { |
| int i; |
| |
| for (i = 0; i < ROCKER_WORLD_TYPE_MAX; i++) { |
| if (strcmp(name, world_name(r->worlds[i])) == 0) { |
| return r->worlds[i]; |
| } |
| } |
| return NULL; |
| } |
| |
| static void pci_rocker_realize(PCIDevice *dev, Error **errp) |
| { |
| Rocker *r = ROCKER(dev); |
| const MACAddr zero = { .a = { 0, 0, 0, 0, 0, 0 } }; |
| const MACAddr dflt = { .a = { 0x52, 0x54, 0x00, 0x12, 0x35, 0x01 } }; |
| static int sw_index; |
| int i, err = 0; |
| |
| /* allocate worlds */ |
| |
| r->worlds[ROCKER_WORLD_TYPE_OF_DPA] = of_dpa_world_alloc(r); |
| |
| if (!r->world_name) { |
| r->world_name = g_strdup(world_name(r->worlds[ROCKER_WORLD_TYPE_OF_DPA])); |
| } |
| |
| r->world_dflt = rocker_world_type_by_name(r, r->world_name); |
| if (!r->world_dflt) { |
| error_setg(errp, |
| "invalid argument requested world %s does not exist", |
| r->world_name); |
| goto err_world_type_by_name; |
| } |
| |
| /* set up memory-mapped region at BAR0 */ |
| |
| memory_region_init_io(&r->mmio, OBJECT(r), &rocker_mmio_ops, r, |
| "rocker-mmio", ROCKER_PCI_BAR0_SIZE); |
| pci_register_bar(dev, ROCKER_PCI_BAR0_IDX, |
| PCI_BASE_ADDRESS_SPACE_MEMORY, &r->mmio); |
| |
| /* set up memory-mapped region for MSI-X */ |
| |
| memory_region_init(&r->msix_bar, OBJECT(r), "rocker-msix-bar", |
| ROCKER_PCI_MSIX_BAR_SIZE); |
| pci_register_bar(dev, ROCKER_PCI_MSIX_BAR_IDX, |
| PCI_BASE_ADDRESS_SPACE_MEMORY, &r->msix_bar); |
| |
| /* MSI-X init */ |
| |
| err = rocker_msix_init(r, errp); |
| if (err) { |
| goto err_msix_init; |
| } |
| |
| /* validate switch properties */ |
| |
| if (!r->name) { |
| r->name = g_strdup(TYPE_ROCKER); |
| } |
| |
| if (rocker_find(r->name)) { |
| error_setg(errp, "%s already exists", r->name); |
| goto err_duplicate; |
| } |
| |
| /* Rocker name is passed in port name requests to OS with the intention |
| * that the name is used in interface names. Limit the length of the |
| * rocker name to avoid naming problems in the OS. Also, adding the |
| * port number as p# and unganged breakout b#, where # is at most 2 |
| * digits, so leave room for it too (-1 for string terminator, -3 for |
| * p# and -3 for b#) |
| */ |
| #define ROCKER_IFNAMSIZ 16 |
| #define MAX_ROCKER_NAME_LEN (ROCKER_IFNAMSIZ - 1 - 3 - 3) |
| if (strlen(r->name) > MAX_ROCKER_NAME_LEN) { |
| error_setg(errp, |
| "name too long; please shorten to at most %d chars", |
| MAX_ROCKER_NAME_LEN); |
| goto err_name_too_long; |
| } |
| |
| if (memcmp(&r->fp_start_macaddr, &zero, sizeof(zero)) == 0) { |
| memcpy(&r->fp_start_macaddr, &dflt, sizeof(dflt)); |
| r->fp_start_macaddr.a[4] += (sw_index++); |
| } |
| |
| if (!r->switch_id) { |
| memcpy(&r->switch_id, &r->fp_start_macaddr, |
| sizeof(r->fp_start_macaddr)); |
| } |
| |
| if (r->fp_ports > ROCKER_FP_PORTS_MAX) { |
| r->fp_ports = ROCKER_FP_PORTS_MAX; |
| } |
| |
| r->rings = g_new(DescRing *, rocker_pci_ring_count(r)); |
| |
| /* Rings are ordered like this: |
| * - command ring |
| * - event ring |
| * - port0 tx ring |
| * - port0 rx ring |
| * - port1 tx ring |
| * - port1 rx ring |
| * ..... |
| */ |
| |
| for (i = 0; i < rocker_pci_ring_count(r); i++) { |
| DescRing *ring = desc_ring_alloc(r, i); |
| |
| if (i == ROCKER_RING_CMD) { |
| desc_ring_set_consume(ring, cmd_consume, ROCKER_MSIX_VEC_CMD); |
| } else if (i == ROCKER_RING_EVENT) { |
| desc_ring_set_consume(ring, NULL, ROCKER_MSIX_VEC_EVENT); |
| } else if (i % 2 == 0) { |
| desc_ring_set_consume(ring, tx_consume, |
| ROCKER_MSIX_VEC_TX((i - 2) / 2)); |
| } else if (i % 2 == 1) { |
| desc_ring_set_consume(ring, NULL, ROCKER_MSIX_VEC_RX((i - 3) / 2)); |
| } |
| |
| r->rings[i] = ring; |
| } |
| |
| for (i = 0; i < r->fp_ports; i++) { |
| FpPort *port = |
| fp_port_alloc(r, r->name, &r->fp_start_macaddr, |
| i, &r->fp_ports_peers[i]); |
| |
| r->fp_port[i] = port; |
| fp_port_set_world(port, r->world_dflt); |
| } |
| |
| QLIST_INSERT_HEAD(&rockers, r, next); |
| |
| return; |
| |
| err_name_too_long: |
| err_duplicate: |
| rocker_msix_uninit(r); |
| err_msix_init: |
| object_unparent(OBJECT(&r->msix_bar)); |
| object_unparent(OBJECT(&r->mmio)); |
| err_world_type_by_name: |
| for (i = 0; i < ROCKER_WORLD_TYPE_MAX; i++) { |
| if (r->worlds[i]) { |
| world_free(r->worlds[i]); |
| } |
| } |
| } |
| |
| static void pci_rocker_uninit(PCIDevice *dev) |
| { |
| Rocker *r = ROCKER(dev); |
| int i; |
| |
| QLIST_REMOVE(r, next); |
| |
| for (i = 0; i < r->fp_ports; i++) { |
| FpPort *port = r->fp_port[i]; |
| |
| fp_port_free(port); |
| r->fp_port[i] = NULL; |
| } |
| |
| for (i = 0; i < rocker_pci_ring_count(r); i++) { |
| if (r->rings[i]) { |
| desc_ring_free(r->rings[i]); |
| } |
| } |
| g_free(r->rings); |
| |
| rocker_msix_uninit(r); |
| object_unparent(OBJECT(&r->msix_bar)); |
| object_unparent(OBJECT(&r->mmio)); |
| |
| for (i = 0; i < ROCKER_WORLD_TYPE_MAX; i++) { |
| if (r->worlds[i]) { |
| world_free(r->worlds[i]); |
| } |
| } |
| g_free(r->fp_ports_peers); |
| } |
| |
| static void rocker_reset(DeviceState *dev) |
| { |
| Rocker *r = ROCKER(dev); |
| int i; |
| |
| for (i = 0; i < ROCKER_WORLD_TYPE_MAX; i++) { |
| if (r->worlds[i]) { |
| world_reset(r->worlds[i]); |
| } |
| } |
| for (i = 0; i < r->fp_ports; i++) { |
| fp_port_reset(r->fp_port[i]); |
| fp_port_set_world(r->fp_port[i], r->world_dflt); |
| } |
| |
| r->test_reg = 0; |
| r->test_reg64 = 0; |
| r->test_dma_addr = 0; |
| r->test_dma_size = 0; |
| |
| for (i = 0; i < rocker_pci_ring_count(r); i++) { |
| desc_ring_reset(r->rings[i]); |
| } |
| |
| DPRINTF("Reset done\n"); |
| } |
| |
| static Property rocker_properties[] = { |
| DEFINE_PROP_STRING("name", Rocker, name), |
| DEFINE_PROP_STRING("world", Rocker, world_name), |
| DEFINE_PROP_MACADDR("fp_start_macaddr", Rocker, |
| fp_start_macaddr), |
| DEFINE_PROP_UINT64("switch_id", Rocker, |
| switch_id, 0), |
| DEFINE_PROP_ARRAY("ports", Rocker, fp_ports, |
| fp_ports_peers, qdev_prop_netdev, NICPeers), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static const VMStateDescription rocker_vmsd = { |
| .name = TYPE_ROCKER, |
| .unmigratable = 1, |
| }; |
| |
| static void rocker_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
| |
| k->realize = pci_rocker_realize; |
| k->exit = pci_rocker_uninit; |
| k->vendor_id = PCI_VENDOR_ID_REDHAT; |
| k->device_id = PCI_DEVICE_ID_REDHAT_ROCKER; |
| k->revision = ROCKER_PCI_REVISION; |
| k->class_id = PCI_CLASS_NETWORK_OTHER; |
| set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); |
| dc->desc = "Rocker Switch"; |
| dc->reset = rocker_reset; |
| dc->props = rocker_properties; |
| dc->vmsd = &rocker_vmsd; |
| } |
| |
| static const TypeInfo rocker_info = { |
| .name = TYPE_ROCKER, |
| .parent = TYPE_PCI_DEVICE, |
| .instance_size = sizeof(Rocker), |
| .class_init = rocker_class_init, |
| .interfaces = (InterfaceInfo[]) { |
| { INTERFACE_CONVENTIONAL_PCI_DEVICE }, |
| { }, |
| }, |
| }; |
| |
| static void rocker_register_types(void) |
| { |
| type_register_static(&rocker_info); |
| } |
| |
| type_init(rocker_register_types) |