1 files changed, 64 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h
index 1055ca9f6043..83c3f2fc3411 100644
--- a/drivers/scsi/bfa/bfa_ioc.h
+++ b/drivers/scsi/bfa/bfa_ioc.h
@@ -85,6 +85,68 @@ struct bfa_sge_s {
 #endif
 
 /*
+ * BFA memory resources
+ */
+struct bfa_mem_dma_s {
+        struct list_head qe;            /* Queue of DMA elements */
+        u32             mem_len;        /* Total Length in Bytes */
+        u8              *kva;           /* kernel virtual address */
+        u64             dma;            /* dma address if DMA memory */
+        u8              *kva_curp;      /* kva allocation cursor */
+        u64             dma_curp;       /* dma allocation cursor */
+};
+#define bfa_mem_dma_t struct bfa_mem_dma_s
+
+struct bfa_mem_kva_s {
+        struct list_head qe;            /* Queue of KVA elements */
+        u32             mem_len;        /* Total Length in Bytes */
+        u8              *kva;           /* kernel virtual address */
+        u8              *kva_curp;      /* kva allocation cursor */
+};
+#define bfa_mem_kva_t struct bfa_mem_kva_s
+
+struct bfa_meminfo_s {
+        struct bfa_mem_dma_s dma_info;
+        struct bfa_mem_kva_s kva_info;
+};
+
+/* BFA memory segment setup macros */
+#define bfa_mem_dma_setup(_meminfo, _dm_ptr, _seg_sz) do {      \
+        ((bfa_mem_dma_t *)(_dm_ptr))->mem_len = (_seg_sz);      \
+        if (_seg_sz)                                            \
+                list_add_tail(&((bfa_mem_dma_t *)_dm_ptr)->qe,  \
+                              &(_meminfo)->dma_info.qe);        \
+} while (0)
+
+#define bfa_mem_kva_setup(_meminfo, _kva_ptr, _seg_sz) do {     \
+        ((bfa_mem_kva_t *)(_kva_ptr))->mem_len = (_seg_sz);     \
+        if (_seg_sz)                                            \
+                list_add_tail(&((bfa_mem_kva_t *)_kva_ptr)->qe, \
+                              &(_meminfo)->kva_info.qe);        \
+} while (0)
+
+/* BFA dma memory segments iterator */
+#define bfa_mem_dma_sptr(_mod, _i)      (&(_mod)->dma_seg[(_i)])
+#define bfa_mem_dma_seg_iter(_mod, _sptr, _nr, _i)                      \
+        for (_i = 0, _sptr = bfa_mem_dma_sptr(_mod, _i); _i < (_nr);    \
+             _i++, _sptr = bfa_mem_dma_sptr(_mod, _i))
+
+#define bfa_mem_kva_curp(_mod)  ((_mod)->kva_seg.kva_curp)
+#define bfa_mem_dma_virt(_sptr) ((_sptr)->kva_curp)
+#define bfa_mem_dma_phys(_sptr) ((_sptr)->dma_curp)
+#define bfa_mem_dma_len(_sptr)  ((_sptr)->mem_len)
+
+/* Get the corresponding dma buf kva for a req - from the tag */
+#define bfa_mem_get_dmabuf_kva(_mod, _tag, _rqsz)                             \
+        (((u8 *)(_mod)->dma_seg[BFI_MEM_SEG_FROM_TAG(_tag, _rqsz)].kva_curp) +\
+         BFI_MEM_SEG_REQ_OFFSET(_tag, _rqsz) * (_rqsz))
+
+/* Get the corresponding dma buf pa for a req - from the tag */
+#define bfa_mem_get_dmabuf_pa(_mod, _tag, _rqsz)                        \
+        ((_mod)->dma_seg[BFI_MEM_SEG_FROM_TAG(_tag, _rqsz)].dma_curp +  \
+         BFI_MEM_SEG_REQ_OFFSET(_tag, _rqsz) * (_rqsz))
+
+/*
  * PCI device information required by IOC
  */
 struct bfa_pcidev_s {
@@ -301,7 +363,9 @@ struct bfa_ablk_s {
         bfa_ablk_cbfn_t         cbfn;
         void                    *cbarg;
         struct bfa_ioc_notify_s ioc_notify;
+        struct bfa_mem_dma_s    ablk_dma;
 };
+#define BFA_MEM_ABLK_DMA(__bfa)         (&((__bfa)->modules.ablk.ablk_dma))
 
 #define bfa_ioc_pcifn(__ioc)            ((__ioc)->pcidev.pci_func)
 #define bfa_ioc_devid(__ioc)            ((__ioc)->pcidev.device_id)