--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2021 Intel Corporation
+ */
+#ifndef _RTE_IDXD_RAWDEV_FNS_H_
+#define _RTE_IDXD_RAWDEV_FNS_H_
+
+/**
+ * @file
+ * This header file contains the implementation of the various ioat
+ * rawdev functions for DSA hardware. The API specification and key
+ * public structures are defined in "rte_ioat_rawdev.h".
+ *
+ * This file should not be included directly, but instead applications should
+ * include "rte_ioat_rawdev.h", which then includes this file - and the
+ * IOAT/CBDMA equivalent header - in turn.
+ */
+
+#include <stdint.h>
+
+/*
+ * Defines used in the data path for interacting with hardware.
+ */
+#define IDXD_CMD_OP_SHIFT 24
+enum rte_idxd_ops {
+ idxd_op_nop = 0,
+ idxd_op_batch,
+ idxd_op_drain,
+ idxd_op_memmove,
+ idxd_op_fill
+};
+
+#define IDXD_FLAG_FENCE (1 << 0)
+#define IDXD_FLAG_COMPLETION_ADDR_VALID (1 << 2)
+#define IDXD_FLAG_REQUEST_COMPLETION (1 << 3)
+#define IDXD_FLAG_CACHE_CONTROL (1 << 8)
+
+#define IOAT_COMP_UPDATE_SHIFT 3
+#define IOAT_CMD_OP_SHIFT 24
+enum rte_ioat_ops {
+ ioat_op_copy = 0, /* Standard DMA Operation */
+ ioat_op_fill /* Block Fill */
+};
+
+/**
+ * Hardware descriptor used by DSA hardware, for both bursts and
+ * for individual operations.
+ */
+struct rte_idxd_hw_desc {
+ uint32_t pasid;
+ uint32_t op_flags;
+ rte_iova_t completion;
+
+ RTE_STD_C11
+ union {
+ rte_iova_t src; /* source address for copy ops etc. */
+ rte_iova_t desc_addr; /* descriptor pointer for batch */
+ };
+ rte_iova_t dst;
+
+ uint32_t size; /* length of data for op, or batch size */
+
+ uint16_t intr_handle; /* completion interrupt handle */
+
+ /* remaining 26 bytes are reserved */
+ uint16_t __reserved[13];
+} __rte_aligned(64);
+
+/**
+ * Completion record structure written back by DSA
+ */
+struct rte_idxd_completion {
+ uint8_t status;
+ uint8_t result;
+ /* 16-bits pad here */
+ uint32_t completed_size; /* data length, or descriptors for batch */
+
+ rte_iova_t fault_address;
+ uint32_t invalid_flags;
+} __rte_aligned(32);
+
+#define BATCH_SIZE 64
+
+/**
+ * Structure used inside the driver for building up and submitting
+ * a batch of operations to the DSA hardware.
+ */
+struct rte_idxd_desc_batch {
+ struct rte_idxd_completion comp; /* the completion record for batch */
+
+ uint16_t submitted;
+ uint16_t op_count;
+ uint16_t hdl_end;
+
+ struct rte_idxd_hw_desc batch_desc;
+
+ /* batches must always have 2 descriptors, so put a null at the start */
+ struct rte_idxd_hw_desc null_desc;
+ struct rte_idxd_hw_desc ops[BATCH_SIZE];
+};
+
+/**
+ * structure used to save the "handles" provided by the user to be
+ * returned to the user on job completion.
+ */
+struct rte_idxd_user_hdl {
+ uint64_t src;
+ uint64_t dst;
+};
+
+/**
+ * @internal
+ * Structure representing an IDXD device instance
+ */
+struct rte_idxd_rawdev {
+ enum rte_ioat_dev_type type;
+ struct rte_ioat_xstats xstats;
+
+ void *portal; /* address to write the batch descriptor */
+
+ /* counters to track the batches and the individual op handles */
+ uint16_t batch_ring_sz; /* size of batch ring */
+ uint16_t hdl_ring_sz; /* size of the user hdl ring */
+
+ uint16_t next_batch; /* where we write descriptor ops */
+ uint16_t next_completed; /* batch where we read completions */
+ uint16_t next_ret_hdl; /* the next user hdl to return */
+ uint16_t last_completed_hdl; /* the last user hdl that has completed */
+ uint16_t next_free_hdl; /* where the handle for next op will go */
+ uint16_t hdls_disable; /* disable tracking completion handles */
+
+ struct rte_idxd_user_hdl *hdl_ring;
+ struct rte_idxd_desc_batch *batch_ring;
+};
+
+static __rte_always_inline int
+__idxd_write_desc(int dev_id, const struct rte_idxd_hw_desc *desc,
+ const struct rte_idxd_user_hdl *hdl)
+{
+ struct rte_idxd_rawdev *idxd =
+ (struct rte_idxd_rawdev *)rte_rawdevs[dev_id].dev_private;
+ struct rte_idxd_desc_batch *b = &idxd->batch_ring[idxd->next_batch];
+
+ /* check for room in the handle ring */
+ if (((idxd->next_free_hdl + 1) & (idxd->hdl_ring_sz - 1)) == idxd->next_ret_hdl)
+ goto failed;
+
+ /* check for space in current batch */
+ if (b->op_count >= BATCH_SIZE)
+ goto failed;
+
+ /* check that we can actually use the current batch */
+ if (b->submitted)
+ goto failed;
+
+ /* write the descriptor */
+ b->ops[b->op_count++] = *desc;
+
+ /* store the completion details */
+ if (!idxd->hdls_disable)
+ idxd->hdl_ring[idxd->next_free_hdl] = *hdl;
+ if (++idxd->next_free_hdl == idxd->hdl_ring_sz)
+ idxd->next_free_hdl = 0;
+
+ idxd->xstats.enqueued++;
+ return 1;
+
+failed:
+ idxd->xstats.enqueue_failed++;
+ rte_errno = ENOSPC;
+ return 0;
+}
+
+static __rte_always_inline int
+__idxd_enqueue_fill(int dev_id, uint64_t pattern, rte_iova_t dst,
+ unsigned int length, uintptr_t dst_hdl)
+{
+ const struct rte_idxd_hw_desc desc = {
+ .op_flags = (idxd_op_fill << IDXD_CMD_OP_SHIFT) |
+ IDXD_FLAG_CACHE_CONTROL,
+ .src = pattern,
+ .dst = dst,
+ .size = length
+ };
+ const struct rte_idxd_user_hdl hdl = {
+ .dst = dst_hdl
+ };
+ return __idxd_write_desc(dev_id, &desc, &hdl);
+}
+
+static __rte_always_inline int
+__idxd_enqueue_copy(int dev_id, rte_iova_t src, rte_iova_t dst,
+ unsigned int length, uintptr_t src_hdl, uintptr_t dst_hdl)
+{
+ const struct rte_idxd_hw_desc desc = {
+ .op_flags = (idxd_op_memmove << IDXD_CMD_OP_SHIFT) |
+ IDXD_FLAG_CACHE_CONTROL,
+ .src = src,
+ .dst = dst,
+ .size = length
+ };
+ const struct rte_idxd_user_hdl hdl = {
+ .src = src_hdl,
+ .dst = dst_hdl
+ };
+ return __idxd_write_desc(dev_id, &desc, &hdl);
+}
+
+static __rte_always_inline int
+__idxd_fence(int dev_id)
+{
+ static const struct rte_idxd_hw_desc fence = {
+ .op_flags = IDXD_FLAG_FENCE
+ };
+ static const struct rte_idxd_user_hdl null_hdl;
+ return __idxd_write_desc(dev_id, &fence, &null_hdl);
+}
+
+static __rte_always_inline void
+__idxd_movdir64b(volatile void *dst, const void *src)
+{
+ asm volatile (".byte 0x66, 0x0f, 0x38, 0xf8, 0x02"
+ :
+ : "a" (dst), "d" (src));
+}
+
+static __rte_always_inline int
+__idxd_perform_ops(int dev_id)
+{
+ struct rte_idxd_rawdev *idxd =
+ (struct rte_idxd_rawdev *)rte_rawdevs[dev_id].dev_private;
+ struct rte_idxd_desc_batch *b = &idxd->batch_ring[idxd->next_batch];
+
+ if (b->submitted || b->op_count == 0)
+ return 0;
+ b->hdl_end = idxd->next_free_hdl;
+ b->comp.status = 0;
+ b->submitted = 1;
+ b->batch_desc.size = b->op_count + 1;
+ __idxd_movdir64b(idxd->portal, &b->batch_desc);
+
+ if (++idxd->next_batch == idxd->batch_ring_sz)
+ idxd->next_batch = 0;
+ idxd->xstats.started = idxd->xstats.enqueued;
+ return 0;
+}
+
+static __rte_always_inline int
+__idxd_completed_ops(int dev_id, uint8_t max_ops,
+ uintptr_t *src_hdls, uintptr_t *dst_hdls)
+{
+ struct rte_idxd_rawdev *idxd =
+ (struct rte_idxd_rawdev *)rte_rawdevs[dev_id].dev_private;
+ struct rte_idxd_desc_batch *b = &idxd->batch_ring[idxd->next_completed];
+ uint16_t h_idx = idxd->next_ret_hdl;
+ int n = 0;
+
+ while (b->submitted && b->comp.status != 0) {
+ idxd->last_completed_hdl = b->hdl_end;
+ b->submitted = 0;
+ b->op_count = 0;
+ if (++idxd->next_completed == idxd->batch_ring_sz)
+ idxd->next_completed = 0;
+ b = &idxd->batch_ring[idxd->next_completed];
+ }
+
+ if (!idxd->hdls_disable)
+ for (n = 0; n < max_ops && h_idx != idxd->last_completed_hdl; n++) {
+ src_hdls[n] = idxd->hdl_ring[h_idx].src;
+ dst_hdls[n] = idxd->hdl_ring[h_idx].dst;
+ if (++h_idx == idxd->hdl_ring_sz)
+ h_idx = 0;
+ }
+ else
+ while (h_idx != idxd->last_completed_hdl) {
+ n++;
+ if (++h_idx == idxd->hdl_ring_sz)
+ h_idx = 0;
+ }
+
+ idxd->next_ret_hdl = h_idx;
+
+ idxd->xstats.completed += n;
+ return n;
+}
+
+#endif
#ifndef _RTE_IOAT_RAWDEV_FNS_H_
#define _RTE_IOAT_RAWDEV_FNS_H_
+/**
+ * @file
+ * This header file contains the implementation of the various ioat
+ * rawdev functions for IOAT/CBDMA hardware. The API specification and key
+ * public structures are defined in "rte_ioat_rawdev.h".
+ *
+ * This file should not be included directly, but instead applications should
+ * include "rte_ioat_rawdev.h", which then includes this file - and the IDXD/DSA
+ * equivalent header - in turn.
+ */
+
#include <x86intrin.h>
#include <rte_rawdev.h>
#include <rte_memzone.h>
#include <rte_prefetch.h>
+/**
+ * @internal
+ * Identify the data path to use.
+ * Must be first field of rte_ioat_rawdev and rte_idxd_rawdev structs
+ */
+enum rte_ioat_dev_type {
+ RTE_IOAT_DEV,
+ RTE_IDXD_DEV,
+};
+
+/**
+ * @internal
+ * some statistics for tracking, if added/changed update xstats fns
+ */
+struct rte_ioat_xstats {
+ uint64_t enqueue_failed;
+ uint64_t enqueued;
+ uint64_t started;
+ uint64_t completed;
+};
+
+#include "rte_idxd_rawdev_fns.h"
+
/**
* @internal
* Structure representing a device descriptor
uint64_t op_specific[4];
};
-/**
- * @internal
- * Identify the data path to use.
- * Must be first field of rte_ioat_rawdev and rte_idxd_rawdev structs
- */
-enum rte_ioat_dev_type {
- RTE_IOAT_DEV,
- RTE_IDXD_DEV,
-};
-
-/**
- * @internal
- * some statistics for tracking, if added/changed update xstats fns
- */
-struct rte_ioat_xstats {
- uint64_t enqueue_failed;
- uint64_t enqueued;
- uint64_t started;
- uint64_t completed;
-};
-
/**
* @internal
* Structure representing an IOAT device instance
#define RTE_IOAT_CHANSTS_HALTED 0x3
#define RTE_IOAT_CHANSTS_ARMED 0x4
-/*
- * Defines used in the data path for interacting with hardware.
- */
-#define IDXD_CMD_OP_SHIFT 24
-enum rte_idxd_ops {
- idxd_op_nop = 0,
- idxd_op_batch,
- idxd_op_drain,
- idxd_op_memmove,
- idxd_op_fill
-};
-
-#define IDXD_FLAG_FENCE (1 << 0)
-#define IDXD_FLAG_COMPLETION_ADDR_VALID (1 << 2)
-#define IDXD_FLAG_REQUEST_COMPLETION (1 << 3)
-#define IDXD_FLAG_CACHE_CONTROL (1 << 8)
-
-#define IOAT_COMP_UPDATE_SHIFT 3
-#define IOAT_CMD_OP_SHIFT 24
-enum rte_ioat_ops {
- ioat_op_copy = 0, /* Standard DMA Operation */
- ioat_op_fill /* Block Fill */
-};
-
-/**
- * Hardware descriptor used by DSA hardware, for both bursts and
- * for individual operations.
- */
-struct rte_idxd_hw_desc {
- uint32_t pasid;
- uint32_t op_flags;
- rte_iova_t completion;
-
- RTE_STD_C11
- union {
- rte_iova_t src; /* source address for copy ops etc. */
- rte_iova_t desc_addr; /* descriptor pointer for batch */
- };
- rte_iova_t dst;
-
- uint32_t size; /* length of data for op, or batch size */
-
- uint16_t intr_handle; /* completion interrupt handle */
-
- /* remaining 26 bytes are reserved */
- uint16_t __reserved[13];
-} __rte_aligned(64);
-
-/**
- * Completion record structure written back by DSA
- */
-struct rte_idxd_completion {
- uint8_t status;
- uint8_t result;
- /* 16-bits pad here */
- uint32_t completed_size; /* data length, or descriptors for batch */
-
- rte_iova_t fault_address;
- uint32_t invalid_flags;
-} __rte_aligned(32);
-
-#define BATCH_SIZE 64
-
-/**
- * Structure used inside the driver for building up and submitting
- * a batch of operations to the DSA hardware.
- */
-struct rte_idxd_desc_batch {
- struct rte_idxd_completion comp; /* the completion record for batch */
-
- uint16_t submitted;
- uint16_t op_count;
- uint16_t hdl_end;
-
- struct rte_idxd_hw_desc batch_desc;
-
- /* batches must always have 2 descriptors, so put a null at the start */
- struct rte_idxd_hw_desc null_desc;
- struct rte_idxd_hw_desc ops[BATCH_SIZE];
-};
-
-/**
- * structure used to save the "handles" provided by the user to be
- * returned to the user on job completion.
- */
-struct rte_idxd_user_hdl {
- uint64_t src;
- uint64_t dst;
-};
-
-/**
- * @internal
- * Structure representing an IDXD device instance
- */
-struct rte_idxd_rawdev {
- enum rte_ioat_dev_type type;
- struct rte_ioat_xstats xstats;
-
- void *portal; /* address to write the batch descriptor */
-
- /* counters to track the batches and the individual op handles */
- uint16_t batch_ring_sz; /* size of batch ring */
- uint16_t hdl_ring_sz; /* size of the user hdl ring */
-
- uint16_t next_batch; /* where we write descriptor ops */
- uint16_t next_completed; /* batch where we read completions */
- uint16_t next_ret_hdl; /* the next user hdl to return */
- uint16_t last_completed_hdl; /* the last user hdl that has completed */
- uint16_t next_free_hdl; /* where the handle for next op will go */
- uint16_t hdls_disable; /* disable tracking completion handles */
-
- struct rte_idxd_user_hdl *hdl_ring;
- struct rte_idxd_desc_batch *batch_ring;
-};
-
static __rte_always_inline int
__ioat_write_desc(int dev_id, uint32_t op, uint64_t src, phys_addr_t dst,
unsigned int length, uintptr_t src_hdl, uintptr_t dst_hdl)
return count;
}
-static __rte_always_inline int
-__idxd_write_desc(int dev_id, const struct rte_idxd_hw_desc *desc,
- const struct rte_idxd_user_hdl *hdl)
-{
- struct rte_idxd_rawdev *idxd =
- (struct rte_idxd_rawdev *)rte_rawdevs[dev_id].dev_private;
- struct rte_idxd_desc_batch *b = &idxd->batch_ring[idxd->next_batch];
-
- /* check for room in the handle ring */
- if (((idxd->next_free_hdl + 1) & (idxd->hdl_ring_sz - 1)) == idxd->next_ret_hdl)
- goto failed;
-
- /* check for space in current batch */
- if (b->op_count >= BATCH_SIZE)
- goto failed;
-
- /* check that we can actually use the current batch */
- if (b->submitted)
- goto failed;
-
- /* write the descriptor */
- b->ops[b->op_count++] = *desc;
-
- /* store the completion details */
- if (!idxd->hdls_disable)
- idxd->hdl_ring[idxd->next_free_hdl] = *hdl;
- if (++idxd->next_free_hdl == idxd->hdl_ring_sz)
- idxd->next_free_hdl = 0;
-
- idxd->xstats.enqueued++;
- return 1;
-
-failed:
- idxd->xstats.enqueue_failed++;
- rte_errno = ENOSPC;
- return 0;
-}
-
-static __rte_always_inline int
-__idxd_enqueue_fill(int dev_id, uint64_t pattern, rte_iova_t dst,
- unsigned int length, uintptr_t dst_hdl)
-{
- const struct rte_idxd_hw_desc desc = {
- .op_flags = (idxd_op_fill << IDXD_CMD_OP_SHIFT) |
- IDXD_FLAG_CACHE_CONTROL,
- .src = pattern,
- .dst = dst,
- .size = length
- };
- const struct rte_idxd_user_hdl hdl = {
- .dst = dst_hdl
- };
- return __idxd_write_desc(dev_id, &desc, &hdl);
-}
-
-static __rte_always_inline int
-__idxd_enqueue_copy(int dev_id, rte_iova_t src, rte_iova_t dst,
- unsigned int length, uintptr_t src_hdl, uintptr_t dst_hdl)
-{
- const struct rte_idxd_hw_desc desc = {
- .op_flags = (idxd_op_memmove << IDXD_CMD_OP_SHIFT) |
- IDXD_FLAG_CACHE_CONTROL,
- .src = src,
- .dst = dst,
- .size = length
- };
- const struct rte_idxd_user_hdl hdl = {
- .src = src_hdl,
- .dst = dst_hdl
- };
- return __idxd_write_desc(dev_id, &desc, &hdl);
-}
-
-static __rte_always_inline int
-__idxd_fence(int dev_id)
-{
- static const struct rte_idxd_hw_desc fence = {
- .op_flags = IDXD_FLAG_FENCE
- };
- static const struct rte_idxd_user_hdl null_hdl;
- return __idxd_write_desc(dev_id, &fence, &null_hdl);
-}
-
-static __rte_always_inline void
-__idxd_movdir64b(volatile void *dst, const void *src)
-{
- asm volatile (".byte 0x66, 0x0f, 0x38, 0xf8, 0x02"
- :
- : "a" (dst), "d" (src));
-}
-
-static __rte_always_inline int
-__idxd_perform_ops(int dev_id)
-{
- struct rte_idxd_rawdev *idxd =
- (struct rte_idxd_rawdev *)rte_rawdevs[dev_id].dev_private;
- struct rte_idxd_desc_batch *b = &idxd->batch_ring[idxd->next_batch];
-
- if (b->submitted || b->op_count == 0)
- return 0;
- b->hdl_end = idxd->next_free_hdl;
- b->comp.status = 0;
- b->submitted = 1;
- b->batch_desc.size = b->op_count + 1;
- __idxd_movdir64b(idxd->portal, &b->batch_desc);
-
- if (++idxd->next_batch == idxd->batch_ring_sz)
- idxd->next_batch = 0;
- idxd->xstats.started = idxd->xstats.enqueued;
- return 0;
-}
-
-static __rte_always_inline int
-__idxd_completed_ops(int dev_id, uint8_t max_ops,
- uintptr_t *src_hdls, uintptr_t *dst_hdls)
-{
- struct rte_idxd_rawdev *idxd =
- (struct rte_idxd_rawdev *)rte_rawdevs[dev_id].dev_private;
- struct rte_idxd_desc_batch *b = &idxd->batch_ring[idxd->next_completed];
- uint16_t h_idx = idxd->next_ret_hdl;
- int n = 0;
-
- while (b->submitted && b->comp.status != 0) {
- idxd->last_completed_hdl = b->hdl_end;
- b->submitted = 0;
- b->op_count = 0;
- if (++idxd->next_completed == idxd->batch_ring_sz)
- idxd->next_completed = 0;
- b = &idxd->batch_ring[idxd->next_completed];
- }
-
- if (!idxd->hdls_disable)
- for (n = 0; n < max_ops && h_idx != idxd->last_completed_hdl; n++) {
- src_hdls[n] = idxd->hdl_ring[h_idx].src;
- dst_hdls[n] = idxd->hdl_ring[h_idx].dst;
- if (++h_idx == idxd->hdl_ring_sz)
- h_idx = 0;
- }
- else
- while (h_idx != idxd->last_completed_hdl) {
- n++;
- if (++h_idx == idxd->hdl_ring_sz)
- h_idx = 0;
- }
-
- idxd->next_ret_hdl = h_idx;
-
- idxd->xstats.completed += n;
- return n;
-}
-
static inline int
rte_ioat_enqueue_fill(int dev_id, uint64_t pattern, phys_addr_t dst,
unsigned int len, uintptr_t dst_hdl)
git.droids-corp.org / dpdk.git / commitdiff