From: Stephen Hemminger Date: Fri, 6 Nov 2015 00:09:30 +0000 (-0800) Subject: xen: allow determining DOM0 at runtime X-Git-Tag: spdx-start~8067 X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=719dbebceb811b4fa5a4c001d89ca516e4b274c8;p=dpdk.git xen: allow determining DOM0 at runtime Add memory infrastructure for runtime Xen DOM0 support. Signed-off-by: Stephen Hemminger Acked-by: Jijiang Liu --- diff --git a/lib/librte_eal/common/include/rte_memory.h b/lib/librte_eal/common/include/rte_memory.h index 1bed4153d3..067be104b5 100644 --- a/lib/librte_eal/common/include/rte_memory.h +++ b/lib/librte_eal/common/include/rte_memory.h @@ -52,6 +52,8 @@ extern "C" { #endif +#include + enum rte_page_sizes { RTE_PGSIZE_4K = 1ULL << 12, RTE_PGSIZE_64K = 1ULL << 16, @@ -180,6 +182,13 @@ unsigned rte_memory_get_nchannel(void); unsigned rte_memory_get_nrank(void); #ifdef RTE_LIBRTE_XEN_DOM0 + +/**< Internal use only - should DOM0 memory mapping be used */ +extern int is_xen_dom0_supported(void); + +/**< Internal use only - phys to virt mapping for xen */ +phys_addr_t rte_xen_mem_phy2mch(uint32_t, const phys_addr_t); + /** * Return the physical address of elt, which is an element of the pool mp. * @@ -191,7 +200,14 @@ unsigned rte_memory_get_nrank(void); * @return * The physical address or error. */ -phys_addr_t rte_mem_phy2mch(uint32_t memseg_id, const phys_addr_t phy_addr); +static inline phys_addr_t +rte_mem_phy2mch(uint32_t memseg_id, const phys_addr_t phy_addr) +{ + if (is_xen_dom0_supported()) + return rte_xen_mem_phy2mch(memseg_id, phy_addr); + else + return phy_addr; +} /** * Memory init for supporting application running on Xen domain0. @@ -214,7 +230,19 @@ int rte_xen_dom0_memory_init(void); * negative: error */ int rte_xen_dom0_memory_attach(void); +#else +static inline int is_xen_dom0_supported(void) +{ + return 0; +} + +static inline phys_addr_t +rte_mem_phy2mch(uint32_t memseg_id __rte_unused, const phys_addr_t phy_addr) +{ + return phy_addr; +} #endif + #ifdef __cplusplus } #endif diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c index 657d19f12c..0de75cd4b0 100644 --- a/lib/librte_eal/linuxapp/eal/eal_memory.c +++ b/lib/librte_eal/linuxapp/eal/eal_memory.c @@ -97,6 +97,13 @@ #include "eal_filesystem.h" #include "eal_hugepages.h" +#ifdef RTE_LIBRTE_XEN_DOM0 +int is_xen_dom0_supported(void) +{ + return internal_config.xen_dom0_support; +} +#endif + /** * @file * Huge page mapping under linux diff --git a/lib/librte_eal/linuxapp/eal/eal_xen_memory.c b/lib/librte_eal/linuxapp/eal/eal_xen_memory.c index d228a9d669..7fd9e8398a 100644 --- a/lib/librte_eal/linuxapp/eal/eal_xen_memory.c +++ b/lib/librte_eal/linuxapp/eal/eal_xen_memory.c @@ -156,7 +156,7 @@ get_xen_memory_size(void) * Based on physical address to caculate MFN in Xen Dom0. */ phys_addr_t -rte_mem_phy2mch(uint32_t memseg_id, const phys_addr_t phy_addr) +rte_xen_mem_phy2mch(uint32_t memseg_id, const phys_addr_t phy_addr) { int mfn_id; uint64_t mfn, mfn_offset; diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c index d990ed8d5a..0e41387c19 100644 --- a/lib/librte_ether/rte_ethdev.c +++ b/lib/librte_ether/rte_ethdev.c @@ -2694,6 +2694,30 @@ rte_eth_dev_rx_intr_ctl(uint8_t port_id, int epfd, int op, void *data) return 0; } +const struct rte_memzone * +rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name, + uint16_t queue_id, size_t size, unsigned align, + int socket_id) +{ + char z_name[RTE_MEMZONE_NAMESIZE]; + const struct rte_memzone *mz; + + snprintf(z_name, sizeof(z_name), "%s_%s_%d_%d", + dev->driver->pci_drv.name, ring_name, + dev->data->port_id, queue_id); + + mz = rte_memzone_lookup(z_name); + if (mz) + return mz; + + if (is_xen_dom0_supported()) + return rte_memzone_reserve_bounded(z_name, size, socket_id, + 0, align, RTE_PGSIZE_2M); + else + return rte_memzone_reserve_aligned(z_name, size, socket_id, + 0, align); +} + int rte_eth_dev_rx_intr_ctl_q(uint8_t port_id, uint16_t queue_id, int epfd, int op, void *data) diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h index 7aec11fe0b..5b51fe6bc7 100644 --- a/lib/librte_ether/rte_ethdev.h +++ b/lib/librte_ether/rte_ethdev.h @@ -3768,6 +3768,30 @@ extern int rte_eth_timesync_read_tx_timestamp(uint8_t port_id, extern void rte_eth_copy_pci_info(struct rte_eth_dev *eth_dev, struct rte_pci_device *pci_dev); +/** + * Create memzone for HW rings. + * malloc can't be used as the physical address is needed. + * If the memzone is already created, then this function returns a ptr + * to the old one. + * + * @param eth_dev + * The *eth_dev* pointer is the address of the *rte_eth_dev* structure + * @param name + * The name of the memory zone + * @param queue_id + * The index of the queue to add to name + * @param size + * The sizeof of the memory area + * @param align + * Alignment for resulting memzone. Must be a power of 2. + * @param socket_id + * The *socket_id* argument is the socket identifier in case of NUMA. + */ +const struct rte_memzone * +rte_eth_dma_zone_reserve(const struct rte_eth_dev *eth_dev, const char *name, + uint16_t queue_id, size_t size, + unsigned align, int socket_id); + #ifdef __cplusplus } #endif diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c index e57cbbda46..f53076a26b 100644 --- a/lib/librte_mempool/rte_mempool.c +++ b/lib/librte_mempool/rte_mempool.c @@ -375,6 +375,26 @@ rte_mempool_xmem_usage(void *vaddr, uint32_t elt_num, size_t elt_sz, return usz; } +#ifndef RTE_LIBRTE_XEN_DOM0 +/* stub if DOM0 support not configured */ +struct rte_mempool * +rte_dom0_mempool_create(const char *name __rte_unused, + unsigned n __rte_unused, + unsigned elt_size __rte_unused, + unsigned cache_size __rte_unused, + unsigned private_data_size __rte_unused, + rte_mempool_ctor_t *mp_init __rte_unused, + void *mp_init_arg __rte_unused, + rte_mempool_obj_ctor_t *obj_init __rte_unused, + void *obj_init_arg __rte_unused, + int socket_id __rte_unused, + unsigned flags __rte_unused) +{ + rte_errno = EINVAL; + return NULL; +} +#endif + /* create the mempool */ struct rte_mempool * rte_mempool_create(const char *name, unsigned n, unsigned elt_size, @@ -383,20 +403,20 @@ rte_mempool_create(const char *name, unsigned n, unsigned elt_size, rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg, int socket_id, unsigned flags) { -#ifdef RTE_LIBRTE_XEN_DOM0 - return rte_dom0_mempool_create(name, n, elt_size, - cache_size, private_data_size, - mp_init, mp_init_arg, - obj_init, obj_init_arg, - socket_id, flags); -#else - return rte_mempool_xmem_create(name, n, elt_size, - cache_size, private_data_size, - mp_init, mp_init_arg, - obj_init, obj_init_arg, - socket_id, flags, - NULL, NULL, MEMPOOL_PG_NUM_DEFAULT, MEMPOOL_PG_SHIFT_MAX); -#endif + if (is_xen_dom0_supported()) + return rte_dom0_mempool_create(name, n, elt_size, + cache_size, private_data_size, + mp_init, mp_init_arg, + obj_init, obj_init_arg, + socket_id, flags); + else + return rte_mempool_xmem_create(name, n, elt_size, + cache_size, private_data_size, + mp_init, mp_init_arg, + obj_init, obj_init_arg, + socket_id, flags, + NULL, NULL, MEMPOOL_PG_NUM_DEFAULT, + MEMPOOL_PG_SHIFT_MAX); } /* diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h index 8abeca9e34..6e2390a1c8 100644 --- a/lib/librte_mempool/rte_mempool.h +++ b/lib/librte_mempool/rte_mempool.h @@ -640,7 +640,6 @@ rte_mempool_xmem_create(const char *name, unsigned n, unsigned elt_size, int socket_id, unsigned flags, void *vaddr, const phys_addr_t paddr[], uint32_t pg_num, uint32_t pg_shift); -#ifdef RTE_LIBRTE_XEN_DOM0 /** * Create a new mempool named *name* in memory on Xen Dom0. * @@ -728,7 +727,7 @@ rte_dom0_mempool_create(const char *name, unsigned n, unsigned elt_size, rte_mempool_ctor_t *mp_init, void *mp_init_arg, rte_mempool_obj_ctor_t *obj_init, void *obj_init_arg, int socket_id, unsigned flags); -#endif + /** * Dump the status of the mempool to the console.