net/dpaa2: add support for multi seg buffers
[dpdk.git] / drivers / bus / fslmc / fslmc_vfio.c
index 72ea6c8..49bb670 100644 (file)
@@ -61,6 +61,9 @@
 #include "rte_fslmc.h"
 #include "fslmc_vfio.h"
 
+#include "portal/dpaa2_hw_pvt.h"
+#include "portal/dpaa2_hw_dpio.h"
+
 #define VFIO_MAX_CONTAINERS    1
 
 #define FSLMC_VFIO_LOG(level, fmt, args...) \
 static struct fslmc_vfio_group vfio_groups[VFIO_MAX_GRP];
 static struct fslmc_vfio_container vfio_containers[VFIO_MAX_CONTAINERS];
 static int container_device_fd;
+static uint32_t *msi_intr_vaddr;
 void *(*rte_mcp_ptr_list);
 static uint32_t mcp_id;
+static int is_dma_done;
 
 static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
 {
@@ -86,9 +91,9 @@ static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
                container = &vfio_containers[i];
                if (!ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER,
                           &container->fd)) {
-                       FSLMC_VFIO_LOG(INFO, "Container pre-exists with"
-                                   " FD[0x%x] for this group",
-                                   container->fd);
+                       FSLMC_VFIO_LOG(INFO,
+                           "Container pre-exists with FD[0x%x] for this group",
+                           container->fd);
                        vfio_group->container = container;
                        return 0;
                }
@@ -127,7 +132,6 @@ static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
        for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
                if (vfio_containers[i].used)
                        continue;
-               FSLMC_VFIO_LOG(DEBUG, "Unused container at index %d", i);
                container = &vfio_containers[i];
        }
        if (!container) {
@@ -144,6 +148,35 @@ static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
        return 0;
 }
 
+static int vfio_map_irq_region(struct fslmc_vfio_group *group)
+{
+       int ret;
+       unsigned long *vaddr = NULL;
+       struct vfio_iommu_type1_dma_map map = {
+               .argsz = sizeof(map),
+               .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
+               .vaddr = 0x6030000,
+               .iova = 0x6030000,
+               .size = 0x1000,
+       };
+
+       vaddr = (unsigned long *)mmap(NULL, 0x1000, PROT_WRITE |
+               PROT_READ, MAP_SHARED, container_device_fd, 0x6030000);
+       if (vaddr == MAP_FAILED) {
+               FSLMC_VFIO_LOG(ERR, "Unable to map region (errno = %d)", errno);
+               return -errno;
+       }
+
+       msi_intr_vaddr = (uint32_t *)((char *)(vaddr) + 64);
+       map.vaddr = (unsigned long)vaddr;
+       ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &map);
+       if (ret == 0)
+               return 0;
+
+       FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA fails (errno = %d)", errno);
+       return -errno;
+}
+
 int vfio_dmamap_mem_region(uint64_t vaddr,
                           uint64_t iova,
                           uint64_t size)
@@ -167,6 +200,78 @@ int vfio_dmamap_mem_region(uint64_t vaddr,
        return 0;
 }
 
+int rte_fslmc_vfio_dmamap(void)
+{
+       int ret;
+       struct fslmc_vfio_group *group;
+       struct vfio_iommu_type1_dma_map dma_map = {
+               .argsz = sizeof(struct vfio_iommu_type1_dma_map),
+               .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
+       };
+
+       int i;
+       const struct rte_memseg *memseg;
+
+       if (is_dma_done)
+               return 0;
+
+       memseg = rte_eal_get_physmem_layout();
+       if (memseg == NULL) {
+               FSLMC_VFIO_LOG(ERR, "Cannot get physical layout.");
+               return -ENODEV;
+       }
+
+       for (i = 0; i < RTE_MAX_MEMSEG; i++) {
+               if (memseg[i].addr == NULL && memseg[i].len == 0) {
+                       FSLMC_VFIO_LOG(DEBUG, "Total %d segments found.", i);
+                       break;
+               }
+
+               dma_map.size = memseg[i].len;
+               dma_map.vaddr = memseg[i].addr_64;
+#ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
+               dma_map.iova = memseg[i].phys_addr;
+#else
+               dma_map.iova = dma_map.vaddr;
+#endif
+
+               /* SET DMA MAP for IOMMU */
+               group = &vfio_groups[0];
+
+               if (!group->container) {
+                       FSLMC_VFIO_LOG(ERR, "Container is not connected ");
+                       return -1;
+               }
+
+               FSLMC_VFIO_LOG(DEBUG, "-->Initial SHM Virtual ADDR %llX",
+                            dma_map.vaddr);
+               FSLMC_VFIO_LOG(DEBUG, "-----> DMA size 0x%llX", dma_map.size);
+               ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
+                           &dma_map);
+               if (ret) {
+                       FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA API(errno = %d)",
+                                      errno);
+                       return ret;
+               }
+       }
+
+       /* Verifying that at least single segment is available */
+       if (i <= 0) {
+               FSLMC_VFIO_LOG(ERR, "No Segments found for VFIO Mapping");
+               return -1;
+       }
+
+       /* TODO - This is a W.A. as VFIO currently does not add the mapping of
+        * the interrupt region to SMMU. This should be removed once the
+        * support is added in the Kernel.
+        */
+       vfio_map_irq_region(group);
+
+       is_dma_done = 1;
+
+       return 0;
+}
+
 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
 {
        int64_t v_addr = (int64_t)MAP_FAILED;
@@ -178,8 +283,8 @@ static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
        /* getting the mcp object's fd*/
        mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
        if (mc_fd < 0) {
-               FSLMC_VFIO_LOG(ERR, "error in VFIO get device %s fd from group"
-                           " %d", mcp_obj, group->fd);
+               FSLMC_VFIO_LOG(ERR, "error in VFIO get dev %s fd from group %d",
+                              mcp_obj, group->fd);
                return v_addr;
        }
 
@@ -198,7 +303,7 @@ static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
        }
 
        FSLMC_VFIO_LOG(DEBUG, "region offset = %llx  , region size = %llx",
-                    reg_info.offset, reg_info.size);
+                      reg_info.offset, reg_info.size);
 
        v_addr = (uint64_t)mmap(NULL, reg_info.size,
                PROT_WRITE | PROT_READ, MAP_SHARED,
@@ -261,19 +366,20 @@ int fslmc_vfio_process_group(void)
        struct fslmc_vfio_device *vdev;
        struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
        char *temp_obj, *object_type, *mcp_obj, *dev_name;
-       int32_t object_id, i, dev_fd;
+       int32_t object_id, i, dev_fd, ret;
        DIR *d;
        struct dirent *dir;
        char path[PATH_MAX];
        int64_t v_addr;
        int ndev_count;
+       int dpio_count = 0, dpbp_count = 0;
        struct fslmc_vfio_group *group = &vfio_groups[0];
        static int process_once;
 
        /* if already done once */
        if (process_once) {
-               FSLMC_VFIO_LOG(DEBUG, "Already scanned once - re-scan "
-                           "not supported");
+               FSLMC_VFIO_LOG(DEBUG,
+                              "Already scanned once - re-scan not supported");
                return 0;
        }
        process_once = 0;
@@ -297,8 +403,8 @@ int fslmc_vfio_process_group(void)
                                        free(mcp_obj);
                                mcp_obj = malloc(sizeof(dir->d_name));
                                if (!mcp_obj) {
-                                       FSLMC_VFIO_LOG(ERR, "mcp obj:Unable to"
-                                                   " allocate memory");
+                                       FSLMC_VFIO_LOG(ERR,
+                                                      "mcp obj:alloc failed");
                                        closedir(d);
                                        return -ENOMEM;
                                }
@@ -341,8 +447,6 @@ int fslmc_vfio_process_group(void)
                goto FAILURE;
        }
 
-       FSLMC_VFIO_LOG(DEBUG, "DPAA2 MC has VIR_ADD = %ld", v_addr);
-
        rte_mcp_ptr_list[0] = (void *)v_addr;
 
        d = opendir(path);
@@ -352,7 +456,6 @@ int fslmc_vfio_process_group(void)
        }
 
        i = 0;
-       FSLMC_VFIO_LOG(DEBUG, "DPAA2 - Parsing devices:");
        /* Parsing each object and initiating them*/
        while ((dir = readdir(d)) != NULL) {
                if (dir->d_type != DT_LNK)
@@ -369,14 +472,13 @@ int fslmc_vfio_process_group(void)
                object_type = strtok(dir->d_name, ".");
                temp_obj = strtok(NULL, ".");
                sscanf(temp_obj, "%d", &object_id);
-               FSLMC_VFIO_LOG(DEBUG, " - %s ", dev_name);
 
                /* getting the device fd*/
                dev_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, dev_name);
                if (dev_fd < 0) {
-                       FSLMC_VFIO_LOG(ERR, "VFIO_GROUP_GET_DEVICE_FD error"
-                                   " Device fd: %s, Group: %d",
-                                   dev_name, group->fd);
+                       FSLMC_VFIO_LOG(ERR,
+                                      "GET_DEVICE_FD error fd: %s, Group: %d",
+                                      dev_name, group->fd);
                        free(dev_name);
                        goto FAILURE;
                }
@@ -405,14 +507,32 @@ int fslmc_vfio_process_group(void)
                        dev->dev_type = (strcmp(object_type, "dpseci")) ?
                                DPAA2_MC_DPNI_DEVID : DPAA2_MC_DPSECI_DEVID;
 
-                       FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added [%s-%d]\n",
+                       FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added [%s-%d]",
                                      object_type, object_id);
 
                        fslmc_bus_add_device(dev);
                }
+               if (!strcmp(object_type, "dpio")) {
+                       ret = dpaa2_create_dpio_device(vdev,
+                                                      &device_info,
+                                                      object_id);
+                       if (!ret)
+                               dpio_count++;
+               }
+               if (!strcmp(object_type, "dpbp")) {
+                       ret = dpaa2_create_dpbp_device(object_id);
+                       if (!ret)
+                               dpbp_count++;
+               }
        }
        closedir(d);
 
+       ret = dpaa2_affine_qbman_swp();
+       if (ret)
+               FSLMC_VFIO_LOG(DEBUG, "Error in affining qbman swp %d", ret);
+
+       FSLMC_VFIO_LOG(DEBUG, "DPAA2: Added dpbp_count = %d dpio_count=%d",
+                     dpbp_count, dpio_count);
        return 0;
 
 FAILURE: