From: Allain Legacy Date: Tue, 28 Mar 2017 11:54:00 +0000 (-0400) Subject: net/avp: add device initialization X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=c0ad584222b5c79df63402eebe19038986c84794;p=dpdk.git net/avp: add device initialization Adds support for initialization newly probed AVP PCI devices. Initial queue translations are setup in preparation for device configuration. Signed-off-by: Allain Legacy Signed-off-by: Matt Peters Acked-by: Vincent Jardin --- diff --git a/drivers/net/avp/avp_ethdev.c b/drivers/net/avp/avp_ethdev.c index d2a2fdd4f9..38ff78e1b7 100644 --- a/drivers/net/avp/avp_ethdev.c +++ b/drivers/net/avp/avp_ethdev.c @@ -51,6 +51,7 @@ #include #include #include +#include #include "rte_avp_common.h" #include "rte_avp_fifo.h" @@ -97,6 +98,15 @@ static const struct rte_pci_id pci_id_avp_map[] = { }; +/**@{ 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 @@ -141,10 +151,281 @@ struct avp_adapter { 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. @@ -152,7 +433,10 @@ struct avp_adapter { 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); @@ -170,6 +454,32 @@ eth_avp_dev_init(struct rte_eth_dev *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; } @@ -182,6 +492,11 @@ eth_avp_dev_uninit(struct rte_eth_dev *eth_dev) 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; }