From df0011c9231268f6d8bc3f8ce5df73fd65ae7033 Mon Sep 17 00:00:00 2001 From: Hemant Agrawal Date: Tue, 11 Apr 2017 19:07:25 +0530 Subject: [PATCH] bus/fslmc: add physical-virtual address translation helpers Signed-off-by: Hemant Agrawal --- drivers/bus/fslmc/portal/dpaa2_hw_pvt.h | 66 +++++++++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h index b405af85a1..41bcf0330b 100644 --- a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h +++ b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h @@ -173,6 +173,72 @@ struct qbman_fle { */ #define DPAA2_EQ_RESP_ALWAYS 1 +#ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA +static void *dpaa2_mem_ptov(phys_addr_t paddr) __attribute__((unused)); +/* todo - this is costly, need to write a fast coversion routine */ +static void *dpaa2_mem_ptov(phys_addr_t paddr) +{ + const struct rte_memseg *memseg = rte_eal_get_physmem_layout(); + int i; + + for (i = 0; i < RTE_MAX_MEMSEG && memseg[i].addr_64 != 0; i++) { + if (paddr >= memseg[i].phys_addr && + (char *)paddr < (char *)memseg[i].phys_addr + memseg[i].len) + return (void *)(memseg[i].addr_64 + + (paddr - memseg[i].phys_addr)); + } + return NULL; +} + +static phys_addr_t dpaa2_mem_vtop(uint64_t vaddr) __attribute__((unused)); +static phys_addr_t dpaa2_mem_vtop(uint64_t vaddr) +{ + const struct rte_memseg *memseg = rte_eal_get_physmem_layout(); + int i; + + for (i = 0; i < RTE_MAX_MEMSEG && memseg[i].addr_64 != 0; i++) { + if (vaddr >= memseg[i].addr_64 && + vaddr < memseg[i].addr_64 + memseg[i].len) + return memseg[i].phys_addr + + (vaddr - memseg[i].addr_64); + } + return (phys_addr_t)(NULL); +} + +/** + * When we are using Physical addresses as IO Virtual Addresses, + * Need to call conversion routines dpaa2_mem_vtop & dpaa2_mem_ptov + * whereever required. + * These routines are called with help of below MACRO's + */ + +#define DPAA2_MBUF_VADDR_TO_IOVA(mbuf) ((mbuf)->buf_physaddr) + +/** + * macro to convert Virtual address to IOVA + */ +#define DPAA2_VADDR_TO_IOVA(_vaddr) dpaa2_mem_vtop((uint64_t)(_vaddr)) + +/** + * macro to convert IOVA to Virtual address + */ +#define DPAA2_IOVA_TO_VADDR(_iova) dpaa2_mem_ptov((phys_addr_t)(_iova)) + +/** + * macro to convert modify the memory containing IOVA to Virtual address + */ +#define DPAA2_MODIFY_IOVA_TO_VADDR(_mem, _type) \ + {_mem = (_type)(dpaa2_mem_ptov((phys_addr_t)(_mem))); } + +#else /* RTE_LIBRTE_DPAA2_USE_PHYS_IOVA */ + +#define DPAA2_MBUF_VADDR_TO_IOVA(mbuf) ((mbuf)->buf_addr) +#define DPAA2_VADDR_TO_IOVA(_vaddr) (_vaddr) +#define DPAA2_IOVA_TO_VADDR(_iova) (_iova) +#define DPAA2_MODIFY_IOVA_TO_VADDR(_mem, _type) + +#endif /* RTE_LIBRTE_DPAA2_USE_PHYS_IOVA */ + struct dpaa2_dpbp_dev *dpaa2_alloc_dpbp_dev(void); void dpaa2_free_dpbp_dev(struct dpaa2_dpbp_dev *dpbp); -- 2.20.1