#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"
};
+/**@{ 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
* device
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;
+};
+
+/* 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;
+}
+
+/*
+ * 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->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;
}
git.droids-corp.org / dpdk.git / commitdiff