#include <rte_dev.h>
#include <rte_memory.h>
#include <rte_eal.h>
+#include <rte_io.h>
#include "rte_avp_common.h"
#include "rte_avp_fifo.h"
+static int avp_dev_configure(struct rte_eth_dev *dev);
+static void avp_dev_info_get(struct rte_eth_dev *dev,
+ struct rte_eth_dev_info *dev_info);
+static void avp_vlan_offload_set(struct rte_eth_dev *dev, int mask);
+static int avp_dev_link_update(struct rte_eth_dev *dev,
+ __rte_unused int wait_to_complete);
+
#define AVP_DEV_TO_PCI(eth_dev) RTE_DEV_TO_PCI((eth_dev)->device)
},
};
+/*
+ * dev_ops for avp, bare necessities for basic operation
+ */
+static const struct eth_dev_ops avp_eth_dev_ops = {
+ .dev_configure = avp_dev_configure,
+ .dev_infos_get = avp_dev_info_get,
+ .vlan_offload_set = avp_vlan_offload_set,
+ .link_update = avp_dev_link_update,
+};
+
+/**@{ AVP device flags */
+#define AVP_F_PROMISC (1 << 1)
+#define AVP_F_CONFIGURED (1 << 2)
+#define AVP_F_LINKUP (1 << 3)
+/**@} */
+
+/* Ethernet device validation marker */
+#define AVP_ETHDEV_MAGIC 0x92972862
/*
* Defines the AVP device attributes which are attached to an RTE ethernet
struct avp_dev avp;
} __rte_cache_aligned;
+
+/* 32-bit MMIO register write */
+#define AVP_WRITE32(_value, _addr) rte_write32_relaxed((_value), (_addr))
+
+/* 32-bit MMIO register read */
+#define AVP_READ32(_addr) rte_read32_relaxed((_addr))
+
/* Macro to cast the ethernet device private data to a AVP object */
#define AVP_DEV_PRIVATE_TO_HW(adapter) \
(&((struct avp_adapter *)adapter)->avp)
+/*
+ * Defines the structure of a AVP device queue for the purpose of handling the
+ * receive and transmit burst callback functions
+ */
+struct avp_queue {
+ struct rte_eth_dev_data *dev_data;
+ /**< Backpointer to ethernet device data */
+ struct avp_dev *avp; /**< Backpointer to AVP device */
+ uint16_t queue_id;
+ /**< Queue identifier used for indexing current queue */
+ uint16_t queue_base;
+ /**< Base queue identifier for queue servicing */
+ uint16_t queue_limit;
+ /**< Maximum queue identifier for queue servicing */
+
+ uint64_t packets;
+ uint64_t bytes;
+ uint64_t errors;
+};
+
+/* send a request and wait for a response
+ *
+ * @warning must be called while holding the avp->lock spinlock.
+ */
+static int
+avp_dev_process_request(struct avp_dev *avp, struct rte_avp_request *request)
+{
+ unsigned int retry = AVP_MAX_REQUEST_RETRY;
+ void *resp_addr = NULL;
+ unsigned int count;
+ int ret;
+
+ PMD_DRV_LOG(DEBUG, "Sending request %u to host\n", request->req_id);
+
+ request->result = -ENOTSUP;
+
+ /* Discard any stale responses before starting a new request */
+ while (avp_fifo_get(avp->resp_q, (void **)&resp_addr, 1))
+ PMD_DRV_LOG(DEBUG, "Discarding stale response\n");
+
+ rte_memcpy(avp->sync_addr, request, sizeof(*request));
+ count = avp_fifo_put(avp->req_q, &avp->host_sync_addr, 1);
+ if (count < 1) {
+ PMD_DRV_LOG(ERR, "Cannot send request %u to host\n",
+ request->req_id);
+ ret = -EBUSY;
+ goto done;
+ }
+
+ while (retry--) {
+ /* wait for a response */
+ usleep(AVP_REQUEST_DELAY_USECS);
+
+ count = avp_fifo_count(avp->resp_q);
+ if (count >= 1) {
+ /* response received */
+ break;
+ }
+
+ if ((count < 1) && (retry == 0)) {
+ PMD_DRV_LOG(ERR, "Timeout while waiting for a response for %u\n",
+ request->req_id);
+ ret = -ETIME;
+ goto done;
+ }
+ }
+
+ /* retrieve the response */
+ count = avp_fifo_get(avp->resp_q, (void **)&resp_addr, 1);
+ if ((count != 1) || (resp_addr != avp->host_sync_addr)) {
+ PMD_DRV_LOG(ERR, "Invalid response from host, count=%u resp=%p host_sync_addr=%p\n",
+ count, resp_addr, avp->host_sync_addr);
+ ret = -ENODATA;
+ goto done;
+ }
+
+ /* copy to user buffer */
+ rte_memcpy(request, avp->sync_addr, sizeof(*request));
+ ret = 0;
+
+ PMD_DRV_LOG(DEBUG, "Result %d received for request %u\n",
+ request->result, request->req_id);
+
+done:
+ return ret;
+}
+
+static int
+avp_dev_ctrl_set_config(struct rte_eth_dev *eth_dev,
+ struct rte_avp_device_config *config)
+{
+ struct avp_dev *avp = AVP_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
+ struct rte_avp_request request;
+ int ret;
+
+ /* setup a configure request */
+ memset(&request, 0, sizeof(request));
+ request.req_id = RTE_AVP_REQ_CFG_DEVICE;
+ memcpy(&request.config, config, sizeof(request.config));
+
+ ret = avp_dev_process_request(avp, &request);
+
+ return ret == 0 ? request.result : ret;
+}
+
+/* translate from host physical address to guest virtual address */
+static void *
+avp_dev_translate_address(struct rte_eth_dev *eth_dev,
+ phys_addr_t host_phys_addr)
+{
+ struct rte_pci_device *pci_dev = AVP_DEV_TO_PCI(eth_dev);
+ struct rte_mem_resource *resource;
+ struct rte_avp_memmap_info *info;
+ struct rte_avp_memmap *map;
+ off_t offset;
+ void *addr;
+ unsigned int i;
+
+ addr = pci_dev->mem_resource[RTE_AVP_PCI_MEMORY_BAR].addr;
+ resource = &pci_dev->mem_resource[RTE_AVP_PCI_MEMMAP_BAR];
+ info = (struct rte_avp_memmap_info *)resource->addr;
+
+ offset = 0;
+ for (i = 0; i < info->nb_maps; i++) {
+ /* search all segments looking for a matching address */
+ map = &info->maps[i];
+
+ if ((host_phys_addr >= map->phys_addr) &&
+ (host_phys_addr < (map->phys_addr + map->length))) {
+ /* address is within this segment */
+ offset += (host_phys_addr - map->phys_addr);
+ addr = RTE_PTR_ADD(addr, offset);
+
+ PMD_DRV_LOG(DEBUG, "Translating host physical 0x%" PRIx64 " to guest virtual 0x%p\n",
+ host_phys_addr, addr);
+
+ return addr;
+ }
+ offset += map->length;
+ }
+
+ return NULL;
+}
+
+/* verify that the incoming device version is compatible with our version */
+static int
+avp_dev_version_check(uint32_t version)
+{
+ uint32_t driver = RTE_AVP_STRIP_MINOR_VERSION(AVP_DPDK_DRIVER_VERSION);
+ uint32_t device = RTE_AVP_STRIP_MINOR_VERSION(version);
+
+ if (device <= driver) {
+ /* the host driver version is less than or equal to ours */
+ return 0;
+ }
+
+ return 1;
+}
+
+/* verify that memory regions have expected version and validation markers */
+static int
+avp_dev_check_regions(struct rte_eth_dev *eth_dev)
+{
+ struct rte_pci_device *pci_dev = AVP_DEV_TO_PCI(eth_dev);
+ struct rte_avp_memmap_info *memmap;
+ struct rte_avp_device_info *info;
+ struct rte_mem_resource *resource;
+ unsigned int i;
+
+ /* Dump resource info for debug */
+ for (i = 0; i < PCI_MAX_RESOURCE; i++) {
+ resource = &pci_dev->mem_resource[i];
+ if ((resource->phys_addr == 0) || (resource->len == 0))
+ continue;
+
+ PMD_DRV_LOG(DEBUG, "resource[%u]: phys=0x%" PRIx64 " len=%" PRIu64 " addr=%p\n",
+ i, resource->phys_addr,
+ resource->len, resource->addr);
+
+ switch (i) {
+ case RTE_AVP_PCI_MEMMAP_BAR:
+ memmap = (struct rte_avp_memmap_info *)resource->addr;
+ if ((memmap->magic != RTE_AVP_MEMMAP_MAGIC) ||
+ (memmap->version != RTE_AVP_MEMMAP_VERSION)) {
+ PMD_DRV_LOG(ERR, "Invalid memmap magic 0x%08x and version %u\n",
+ memmap->magic, memmap->version);
+ return -EINVAL;
+ }
+ break;
+
+ case RTE_AVP_PCI_DEVICE_BAR:
+ info = (struct rte_avp_device_info *)resource->addr;
+ if ((info->magic != RTE_AVP_DEVICE_MAGIC) ||
+ avp_dev_version_check(info->version)) {
+ PMD_DRV_LOG(ERR, "Invalid device info magic 0x%08x or version 0x%08x > 0x%08x\n",
+ info->magic, info->version,
+ AVP_DPDK_DRIVER_VERSION);
+ return -EINVAL;
+ }
+ break;
+
+ case RTE_AVP_PCI_MEMORY_BAR:
+ case RTE_AVP_PCI_MMIO_BAR:
+ if (resource->addr == NULL) {
+ PMD_DRV_LOG(ERR, "Missing address space for BAR%u\n",
+ i);
+ return -EINVAL;
+ }
+ break;
+
+ case RTE_AVP_PCI_MSIX_BAR:
+ default:
+ /* no validation required */
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static void
+_avp_set_queue_counts(struct rte_eth_dev *eth_dev)
+{
+ struct rte_pci_device *pci_dev = AVP_DEV_TO_PCI(eth_dev);
+ struct avp_dev *avp = AVP_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
+ struct rte_avp_device_info *host_info;
+ void *addr;
+
+ addr = pci_dev->mem_resource[RTE_AVP_PCI_DEVICE_BAR].addr;
+ host_info = (struct rte_avp_device_info *)addr;
+
+ /*
+ * the transmit direction is not negotiated beyond respecting the max
+ * number of queues because the host can handle arbitrary guest tx
+ * queues (host rx queues).
+ */
+ avp->num_tx_queues = eth_dev->data->nb_tx_queues;
+
+ /*
+ * the receive direction is more restrictive. The host requires a
+ * minimum number of guest rx queues (host tx queues) therefore
+ * negotiate a value that is at least as large as the host minimum
+ * requirement. If the host and guest values are not identical then a
+ * mapping will be established in the receive_queue_setup function.
+ */
+ avp->num_rx_queues = RTE_MAX(host_info->min_rx_queues,
+ eth_dev->data->nb_rx_queues);
+
+ PMD_DRV_LOG(DEBUG, "Requesting %u Tx and %u Rx queues from host\n",
+ avp->num_tx_queues, avp->num_rx_queues);
+}
+
+/*
+ * create a AVP device using the supplied device info by first translating it
+ * to guest address space(s).
+ */
+static int
+avp_dev_create(struct rte_pci_device *pci_dev,
+ struct rte_eth_dev *eth_dev)
+{
+ struct avp_dev *avp = AVP_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
+ struct rte_avp_device_info *host_info;
+ struct rte_mem_resource *resource;
+ unsigned int i;
+
+ resource = &pci_dev->mem_resource[RTE_AVP_PCI_DEVICE_BAR];
+ if (resource->addr == NULL) {
+ PMD_DRV_LOG(ERR, "BAR%u is not mapped\n",
+ RTE_AVP_PCI_DEVICE_BAR);
+ return -EFAULT;
+ }
+ host_info = (struct rte_avp_device_info *)resource->addr;
+
+ if ((host_info->magic != RTE_AVP_DEVICE_MAGIC) ||
+ avp_dev_version_check(host_info->version)) {
+ PMD_DRV_LOG(ERR, "Invalid AVP PCI device, magic 0x%08x version 0x%08x > 0x%08x\n",
+ host_info->magic, host_info->version,
+ AVP_DPDK_DRIVER_VERSION);
+ return -EINVAL;
+ }
+
+ PMD_DRV_LOG(DEBUG, "AVP host device is v%u.%u.%u\n",
+ RTE_AVP_GET_RELEASE_VERSION(host_info->version),
+ RTE_AVP_GET_MAJOR_VERSION(host_info->version),
+ RTE_AVP_GET_MINOR_VERSION(host_info->version));
+
+ PMD_DRV_LOG(DEBUG, "AVP host supports %u to %u TX queue(s)\n",
+ host_info->min_tx_queues, host_info->max_tx_queues);
+ PMD_DRV_LOG(DEBUG, "AVP host supports %u to %u RX queue(s)\n",
+ host_info->min_rx_queues, host_info->max_rx_queues);
+ PMD_DRV_LOG(DEBUG, "AVP host supports features 0x%08x\n",
+ host_info->features);
+
+ if (avp->magic != AVP_ETHDEV_MAGIC) {
+ /*
+ * First time initialization (i.e., not during a VM
+ * migration)
+ */
+ memset(avp, 0, sizeof(*avp));
+ avp->magic = AVP_ETHDEV_MAGIC;
+ avp->dev_data = eth_dev->data;
+ avp->port_id = eth_dev->data->port_id;
+ avp->host_mbuf_size = host_info->mbuf_size;
+ avp->host_features = host_info->features;
+ memcpy(&avp->ethaddr.addr_bytes[0],
+ host_info->ethaddr, ETHER_ADDR_LEN);
+ /* adjust max values to not exceed our max */
+ avp->max_tx_queues =
+ RTE_MIN(host_info->max_tx_queues, RTE_AVP_MAX_QUEUES);
+ avp->max_rx_queues =
+ RTE_MIN(host_info->max_rx_queues, RTE_AVP_MAX_QUEUES);
+ } else {
+ /* Re-attaching during migration */
+
+ /* TODO... requires validation of host values */
+ if ((host_info->features & avp->features) != avp->features) {
+ PMD_DRV_LOG(ERR, "AVP host features mismatched; 0x%08x, host=0x%08x\n",
+ avp->features, host_info->features);
+ /* this should not be possible; continue for now */
+ }
+ }
+
+ /* the device id is allowed to change over migrations */
+ avp->device_id = host_info->device_id;
+
+ /* translate incoming host addresses to guest address space */
+ PMD_DRV_LOG(DEBUG, "AVP first host tx queue at 0x%" PRIx64 "\n",
+ host_info->tx_phys);
+ PMD_DRV_LOG(DEBUG, "AVP first host alloc queue at 0x%" PRIx64 "\n",
+ host_info->alloc_phys);
+ for (i = 0; i < avp->max_tx_queues; i++) {
+ avp->tx_q[i] = avp_dev_translate_address(eth_dev,
+ host_info->tx_phys + (i * host_info->tx_size));
+
+ avp->alloc_q[i] = avp_dev_translate_address(eth_dev,
+ host_info->alloc_phys + (i * host_info->alloc_size));
+ }
+
+ PMD_DRV_LOG(DEBUG, "AVP first host rx queue at 0x%" PRIx64 "\n",
+ host_info->rx_phys);
+ PMD_DRV_LOG(DEBUG, "AVP first host free queue at 0x%" PRIx64 "\n",
+ host_info->free_phys);
+ for (i = 0; i < avp->max_rx_queues; i++) {
+ avp->rx_q[i] = avp_dev_translate_address(eth_dev,
+ host_info->rx_phys + (i * host_info->rx_size));
+ avp->free_q[i] = avp_dev_translate_address(eth_dev,
+ host_info->free_phys + (i * host_info->free_size));
+ }
+
+ PMD_DRV_LOG(DEBUG, "AVP host request queue at 0x%" PRIx64 "\n",
+ host_info->req_phys);
+ PMD_DRV_LOG(DEBUG, "AVP host response queue at 0x%" PRIx64 "\n",
+ host_info->resp_phys);
+ PMD_DRV_LOG(DEBUG, "AVP host sync address at 0x%" PRIx64 "\n",
+ host_info->sync_phys);
+ PMD_DRV_LOG(DEBUG, "AVP host mbuf address at 0x%" PRIx64 "\n",
+ host_info->mbuf_phys);
+ avp->req_q = avp_dev_translate_address(eth_dev, host_info->req_phys);
+ avp->resp_q = avp_dev_translate_address(eth_dev, host_info->resp_phys);
+ avp->sync_addr =
+ avp_dev_translate_address(eth_dev, host_info->sync_phys);
+ avp->mbuf_addr =
+ avp_dev_translate_address(eth_dev, host_info->mbuf_phys);
+
+ /*
+ * store the host mbuf virtual address so that we can calculate
+ * relative offsets for each mbuf as they are processed
+ */
+ avp->host_mbuf_addr = host_info->mbuf_va;
+ avp->host_sync_addr = host_info->sync_va;
+
+ /*
+ * store the maximum packet length that is supported by the host.
+ */
+ avp->max_rx_pkt_len = host_info->max_rx_pkt_len;
+ PMD_DRV_LOG(DEBUG, "AVP host max receive packet length is %u\n",
+ host_info->max_rx_pkt_len);
+
+ return 0;
+}
+
/*
* This function is based on probe() function in avp_pci.c
* It returns 0 on success.
static int
eth_avp_dev_init(struct rte_eth_dev *eth_dev)
{
+ struct avp_dev *avp =
+ AVP_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
struct rte_pci_device *pci_dev;
+ int ret;
pci_dev = AVP_DEV_TO_PCI(eth_dev);
+ eth_dev->dev_ops = &avp_eth_dev_ops;
if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
/*
eth_dev->data->dev_flags |= RTE_ETH_DEV_DETACHABLE;
+ /* Check BAR resources */
+ ret = avp_dev_check_regions(eth_dev);
+ if (ret < 0) {
+ PMD_DRV_LOG(ERR, "Failed to validate BAR resources, ret=%d\n",
+ ret);
+ return ret;
+ }
+
+ /* Handle each subtype */
+ ret = avp_dev_create(pci_dev, eth_dev);
+ if (ret < 0) {
+ PMD_DRV_LOG(ERR, "Failed to create device, ret=%d\n", ret);
+ return ret;
+ }
+
+ /* Allocate memory for storing MAC addresses */
+ eth_dev->data->mac_addrs = rte_zmalloc("avp_ethdev", ETHER_ADDR_LEN, 0);
+ if (eth_dev->data->mac_addrs == NULL) {
+ PMD_DRV_LOG(ERR, "Failed to allocate %d bytes needed to store MAC addresses\n",
+ ETHER_ADDR_LEN);
+ return -ENOMEM;
+ }
+
+ /* Get a mac from device config */
+ ether_addr_copy(&avp->ethaddr, ð_dev->data->mac_addrs[0]);
+
return 0;
}
if (eth_dev->data == NULL)
return 0;
+ if (eth_dev->data->mac_addrs != NULL) {
+ rte_free(eth_dev->data->mac_addrs);
+ eth_dev->data->mac_addrs = NULL;
+ }
+
return 0;
}
.dev_private_size = sizeof(struct avp_adapter),
};
+static int
+avp_dev_configure(struct rte_eth_dev *eth_dev)
+{
+ struct rte_pci_device *pci_dev = AVP_DEV_TO_PCI(eth_dev);
+ struct avp_dev *avp = AVP_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
+ struct rte_avp_device_info *host_info;
+ struct rte_avp_device_config config;
+ int mask = 0;
+ void *addr;
+ int ret;
+
+ addr = pci_dev->mem_resource[RTE_AVP_PCI_DEVICE_BAR].addr;
+ host_info = (struct rte_avp_device_info *)addr;
+
+ /* Setup required number of queues */
+ _avp_set_queue_counts(eth_dev);
+
+ mask = (ETH_VLAN_STRIP_MASK |
+ ETH_VLAN_FILTER_MASK |
+ ETH_VLAN_EXTEND_MASK);
+ avp_vlan_offload_set(eth_dev, mask);
+
+ /* update device config */
+ memset(&config, 0, sizeof(config));
+ config.device_id = host_info->device_id;
+ config.driver_type = RTE_AVP_DRIVER_TYPE_DPDK;
+ config.driver_version = AVP_DPDK_DRIVER_VERSION;
+ config.features = avp->features;
+ config.num_tx_queues = avp->num_tx_queues;
+ config.num_rx_queues = avp->num_rx_queues;
+
+ ret = avp_dev_ctrl_set_config(eth_dev, &config);
+ if (ret < 0) {
+ PMD_DRV_LOG(ERR, "Config request failed by host, ret=%d\n",
+ ret);
+ goto unlock;
+ }
+
+ avp->flags |= AVP_F_CONFIGURED;
+ ret = 0;
+
+unlock:
+ return ret;
+}
+
+
+static int
+avp_dev_link_update(struct rte_eth_dev *eth_dev,
+ __rte_unused int wait_to_complete)
+{
+ struct avp_dev *avp = AVP_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
+ struct rte_eth_link *link = ð_dev->data->dev_link;
+
+ link->link_speed = ETH_SPEED_NUM_10G;
+ link->link_duplex = ETH_LINK_FULL_DUPLEX;
+ link->link_status = !!(avp->flags & AVP_F_LINKUP);
+
+ return -1;
+}
+
+
+static void
+avp_dev_info_get(struct rte_eth_dev *eth_dev,
+ struct rte_eth_dev_info *dev_info)
+{
+ struct avp_dev *avp = AVP_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
+
+ dev_info->driver_name = "rte_avp_pmd";
+ dev_info->pci_dev = RTE_DEV_TO_PCI(eth_dev->device);
+ dev_info->max_rx_queues = avp->max_rx_queues;
+ dev_info->max_tx_queues = avp->max_tx_queues;
+ dev_info->min_rx_bufsize = AVP_MIN_RX_BUFSIZE;
+ dev_info->max_rx_pktlen = avp->max_rx_pkt_len;
+ dev_info->max_mac_addrs = AVP_MAX_MAC_ADDRS;
+ if (avp->host_features & RTE_AVP_FEATURE_VLAN_OFFLOAD) {
+ dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
+ dev_info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT;
+ }
+}
+
+static void
+avp_vlan_offload_set(struct rte_eth_dev *eth_dev, int mask)
+{
+ struct avp_dev *avp = AVP_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
+
+ if (mask & ETH_VLAN_STRIP_MASK) {
+ if (avp->host_features & RTE_AVP_FEATURE_VLAN_OFFLOAD) {
+ if (eth_dev->data->dev_conf.rxmode.hw_vlan_strip)
+ avp->features |= RTE_AVP_FEATURE_VLAN_OFFLOAD;
+ else
+ avp->features &= ~RTE_AVP_FEATURE_VLAN_OFFLOAD;
+ } else {
+ PMD_DRV_LOG(ERR, "VLAN strip offload not supported\n");
+ }
+ }
+
+ if (mask & ETH_VLAN_FILTER_MASK) {
+ if (eth_dev->data->dev_conf.rxmode.hw_vlan_filter)
+ PMD_DRV_LOG(ERR, "VLAN filter offload not supported\n");
+ }
+
+ if (mask & ETH_VLAN_EXTEND_MASK) {
+ if (eth_dev->data->dev_conf.rxmode.hw_vlan_extend)
+ PMD_DRV_LOG(ERR, "VLAN extend offload not supported\n");
+ }
+}
+
RTE_PMD_REGISTER_PCI(net_avp, rte_avp_pmd.pci_drv);
RTE_PMD_REGISTER_PCI_TABLE(net_avp, pci_id_avp_map);
git.droids-corp.org / dpdk.git / blobdiff