2 * Copyright (c) 2002-2007 Neterion, Inc.
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23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * FileName : xgehal-fifo.h
32 * Description: Tx fifo object functionality
34 * Created: 19 May 2004
37 #ifndef XGE_HAL_FIFO_H
38 #define XGE_HAL_FIFO_H
40 #include <dev/nxge/include/xgehal-channel.h>
41 #include <dev/nxge/include/xgehal-config.h>
42 #include <dev/nxge/include/xgehal-mm.h>
46 /* HW fifo configuration */
47 #define XGE_HAL_FIFO_INT_PER_LIST_THRESHOLD 65
48 #define XGE_HAL_FIFO_MAX_WRR 5
49 #define XGE_HAL_FIFO_MAX_PARTITION 4
50 #define XGE_HAL_FIFO_MAX_WRR_STATE 36
51 #define XGE_HAL_FIFO_HW_PAIR_OFFSET 0x20000
53 /* HW FIFO Weight Calender */
54 #define XGE_HAL_FIFO_WRR_0 0x0706050407030602ULL
55 #define XGE_HAL_FIFO_WRR_1 0x0507040601070503ULL
56 #define XGE_HAL_FIFO_WRR_2 0x0604070205060700ULL
57 #define XGE_HAL_FIFO_WRR_3 0x0403060705010207ULL
58 #define XGE_HAL_FIFO_WRR_4 0x0604050300000000ULL
60 * xge_hal_fifo_hw_pair_t
62 * Represent a single fifo in the BAR1 memory space.
65 u64 txdl_pointer; /* offset 0x0 */
69 u64 list_control; /* offset 0x18 */
70 #define XGE_HAL_TX_FIFO_LAST_TXD_NUM( val) vBIT(val,0,8)
71 #define XGE_HAL_TX_FIFO_FIRST_LIST BIT(14)
72 #define XGE_HAL_TX_FIFO_LAST_LIST BIT(15)
73 #define XGE_HAL_TX_FIFO_FIRSTNLAST_LIST vBIT(3,14,2)
74 #define XGE_HAL_TX_FIFO_SPECIAL_FUNC BIT(23)
75 #define XGE_HAL_TX_FIFO_NO_SNOOP(n) vBIT(n,30,2)
76 } xge_hal_fifo_hw_pair_t;
79 /* Bad TxDL transfer codes */
80 #define XGE_HAL_TXD_T_CODE_OK 0x0
81 #define XGE_HAL_TXD_T_CODE_UNUSED_1 0x1
82 #define XGE_HAL_TXD_T_CODE_ABORT_BUFFER 0x2
83 #define XGE_HAL_TXD_T_CODE_ABORT_DTOR 0x3
84 #define XGE_HAL_TXD_T_CODE_UNUSED_5 0x5
85 #define XGE_HAL_TXD_T_CODE_PARITY 0x7
86 #define XGE_HAL_TXD_T_CODE_LOSS_OF_LINK 0xA
87 #define XGE_HAL_TXD_T_CODE_GENERAL_ERR 0xF
91 * struct xge_hal_fifo_txd_t - TxD.
92 * @control_1: Control_1.
93 * @control_2: Control_2.
94 * @buffer_pointer: Buffer_Address.
95 * @host_control: Host_Control.Opaque 64bit data stored by ULD inside the Xframe
96 * descriptor prior to posting the latter on the channel
97 * via xge_hal_fifo_dtr_post() or xge_hal_ring_dtr_post().
98 * The %host_control is returned as is to the ULD with each
99 * completed descriptor.
101 * Transmit descriptor (TxD).Fifo descriptor contains configured number
102 * (list) of TxDs. * For more details please refer to Xframe User Guide,
103 * Section 5.4.2 "Transmit Descriptor (TxD) Format".
105 typedef struct xge_hal_fifo_txd_t {
107 #define XGE_HAL_TXD_LIST_OWN_XENA BIT(7)
108 #define XGE_HAL_TXD_T_CODE (BIT(12)|BIT(13)|BIT(14)|BIT(15))
109 #define XGE_HAL_GET_TXD_T_CODE(val) ((val & XGE_HAL_TXD_T_CODE)>>48)
110 #define XGE_HAL_SET_TXD_T_CODE(x, val) (x |= (((u64)val & 0xF) << 48))
111 #define XGE_HAL_TXD_GATHER_CODE (BIT(22) | BIT(23))
112 #define XGE_HAL_TXD_GATHER_CODE_FIRST BIT(22)
113 #define XGE_HAL_TXD_GATHER_CODE_LAST BIT(23)
114 #define XGE_HAL_TXD_NO_LSO 0
115 #define XGE_HAL_TXD_UDF_COF 1
116 #define XGE_HAL_TXD_TCP_LSO 2
117 #define XGE_HAL_TXD_UDP_LSO 3
118 #define XGE_HAL_TXD_LSO_COF_CTRL(val) vBIT(val,30,2)
119 #define XGE_HAL_TXD_TCP_LSO_MSS(val) vBIT(val,34,14)
120 #define XGE_HAL_TXD_BUFFER0_SIZE(val) vBIT(val,48,16)
121 #define XGE_HAL_TXD_GET_LSO_BYTES_SENT(val) ((val & vBIT(0xFFFF,16,16))>>32)
123 #define XGE_HAL_TXD_TX_CKO_CONTROL (BIT(5)|BIT(6)|BIT(7))
124 #define XGE_HAL_TXD_TX_CKO_IPV4_EN BIT(5)
125 #define XGE_HAL_TXD_TX_CKO_TCP_EN BIT(6)
126 #define XGE_HAL_TXD_TX_CKO_UDP_EN BIT(7)
127 #define XGE_HAL_TXD_VLAN_ENABLE BIT(15)
128 #define XGE_HAL_TXD_VLAN_TAG(val) vBIT(val,16,16)
129 #define XGE_HAL_TXD_INT_NUMBER(val) vBIT(val,34,6)
130 #define XGE_HAL_TXD_INT_TYPE_PER_LIST BIT(47)
131 #define XGE_HAL_TXD_INT_TYPE_UTILZ BIT(46)
132 #define XGE_HAL_TXD_SET_MARKER vBIT(0x6,0,4)
138 } xge_hal_fifo_txd_t;
140 typedef xge_hal_fifo_txd_t* xge_hal_fifo_txdl_t;
143 * struct xge_hal_fifo_t - Fifo channel.
144 * @channel: Channel "base" of this fifo, the common part of all HAL
146 * @post_lock_ptr: Points to a lock that serializes (pointer, control) PIOs.
147 * Note that for Xena the serialization is done across all device
149 * @hw_pair: Per-fifo (Pointer, Control) pair used to send descriptors to the
150 * Xframe hardware (for details see Xframe user guide).
151 * @config: Fifo configuration, part of device configuration
152 * (see xge_hal_device_config_t{}).
153 * @no_snoop_bits: See xge_hal_fifo_config_t{}.
154 * @txdl_per_memblock: Number of TxDLs (TxD lists) per memblock.
155 * on TxDL please refer to Xframe UG.
156 * @interrupt_type: FIXME: to-be-defined.
157 * @txdl_size: Configured TxDL size (i.e., number of TxDs in a list), plus
158 * per-TxDL HAL private space (xge_hal_fifo_txdl_priv_t).
159 * @priv_size: Per-Tx descriptor space reserved for upper-layer driver
161 * @mempool: Memory pool, from which descriptors get allocated.
165 * Note: The structure is cache line aligned.
167 typedef struct xge_hal_fifo_t {
168 xge_hal_channel_t channel;
169 spinlock_t *post_lock_ptr;
170 xge_hal_fifo_hw_pair_t *hw_pair;
171 xge_hal_fifo_config_t *config;
173 int txdl_per_memblock;
177 xge_hal_mempool_t *mempool;
179 } __xge_os_attr_cacheline_aligned xge_hal_fifo_t;
182 * struct xge_hal_fifo_txdl_priv_t - Transmit descriptor HAL-private
184 * @dma_addr: DMA (mapped) address of _this_ descriptor.
185 * @dma_handle: DMA handle used to map the descriptor onto device.
186 * @dma_offset: Descriptor's offset in the memory block. HAL allocates
187 * descriptors in memory blocks (see
188 * xge_hal_fifo_config_t{})
189 * Each memblock is a contiguous block of DMA-able memory.
190 * @frags: Total number of fragments (that is, contiguous data buffers)
191 * carried by this TxDL.
192 * @align_vaddr_start: (TODO).
193 * @align_vaddr: Virtual address of the per-TxDL area in memory used for
194 * alignement. Used to place one or more mis-aligned fragments
195 * (the maximum defined by configration variable
196 * @max_aligned_frags).
197 * @align_dma_addr: DMA address translated from the @align_vaddr.
198 * @align_dma_handle: DMA handle that corresponds to @align_dma_addr.
199 * @align_dma_acch: DMA access handle corresponds to @align_dma_addr.
200 * @align_dma_offset: The current offset into the @align_vaddr area.
201 * Grows while filling the descriptor, gets reset.
202 * @align_used_frags: (TODO).
203 * @alloc_frags: Total number of fragments allocated.
204 * @dang_frags: Number of fragments kept from release until this TxDL is freed.
207 * @dang_txdl: (TODO).
208 * @next_txdl_priv: (TODO).
209 * @first_txdp: (TODO).
210 * @dang_dtrh: Pointer to TxDL (list) kept from release until this TxDL
212 * @linked_txdl_priv: Pointer to any linked TxDL for creating contiguous
214 * @dtrh: Corresponding dtrh to this TxDL.
215 * @memblock: Pointer to the TxDL memory block or memory page.
216 * on the next send operation.
217 * @dma_object: DMA address and handle of the memory block that contains
218 * the descriptor. This member is used only in the "checked"
219 * version of the HAL (to enforce certain assertions);
220 * otherwise it gets compiled out.
221 * @allocated: True if the descriptor is reserved, 0 otherwise. Internal usage.
223 * Per-transmit decsriptor HAL-private data. HAL uses the space to keep DMA
224 * information associated with the descriptor. Note that ULD can ask HAL
225 * to allocate additional per-descriptor space for its own (ULD-specific)
228 * See also: xge_hal_ring_rxd_priv_t{}.
230 typedef struct xge_hal_fifo_txdl_priv_t {
232 pci_dma_h dma_handle;
233 ptrdiff_t dma_offset;
235 char *align_vaddr_start;
237 dma_addr_t align_dma_addr;
238 pci_dma_h align_dma_handle;
239 pci_dma_acc_h align_dma_acch;
240 ptrdiff_t align_dma_offset;
241 int align_used_frags;
244 unsigned int bytes_sent;
246 xge_hal_fifo_txd_t *dang_txdl;
247 struct xge_hal_fifo_txdl_priv_t *next_txdl_priv;
248 xge_hal_fifo_txd_t *first_txdp;
250 #ifdef XGE_DEBUG_ASSERT
251 xge_hal_mempool_dma_t *dma_object;
253 #ifdef XGE_OS_MEMORY_CHECK
256 } xge_hal_fifo_txdl_priv_t;
259 * xge_hal_fifo_get_max_frags_cnt - Return the max fragments allocated
261 * @channelh: Channel handle.
264 xge_hal_fifo_get_max_frags_cnt(xge_hal_channel_h channelh)
266 return ((xge_hal_fifo_t *)channelh)->config->max_frags;
268 /* ========================= FIFO PRIVATE API ============================= */
270 xge_hal_status_e __hal_fifo_open(xge_hal_channel_h channelh,
271 xge_hal_channel_attr_t *attr);
273 void __hal_fifo_close(xge_hal_channel_h channelh);
275 void __hal_fifo_hw_initialize(xge_hal_device_h hldev);
278 __hal_fifo_dtr_align_alloc_map(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh);
281 __hal_fifo_dtr_align_free_unmap(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh);
283 #if defined(XGE_DEBUG_FP) && (XGE_DEBUG_FP & XGE_DEBUG_FP_FIFO)
284 #define __HAL_STATIC_FIFO
285 #define __HAL_INLINE_FIFO
287 __HAL_STATIC_FIFO __HAL_INLINE_FIFO xge_hal_fifo_txdl_priv_t*
288 __hal_fifo_txdl_priv(xge_hal_dtr_h dtrh);
290 __HAL_STATIC_FIFO __HAL_INLINE_FIFO void
291 __hal_fifo_dtr_post_single(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh,
293 __HAL_STATIC_FIFO __HAL_INLINE_FIFO void
294 __hal_fifo_txdl_restore_many(xge_hal_channel_h channelh,
295 xge_hal_fifo_txd_t *txdp, int txdl_count);
297 /* ========================= FIFO PUBLIC API ============================== */
299 __HAL_STATIC_FIFO __HAL_INLINE_FIFO xge_hal_status_e
300 xge_hal_fifo_dtr_reserve(xge_hal_channel_h channelh, xge_hal_dtr_h *dtrh);
302 __HAL_STATIC_FIFO __HAL_INLINE_FIFO void*
303 xge_hal_fifo_dtr_private(xge_hal_dtr_h dtrh);
305 __HAL_STATIC_FIFO __HAL_INLINE_FIFO int
306 xge_hal_fifo_dtr_buffer_cnt(xge_hal_dtr_h dtrh);
308 __HAL_STATIC_FIFO __HAL_INLINE_FIFO xge_hal_status_e
309 xge_hal_fifo_dtr_reserve_sp(xge_hal_channel_h channel, int dtr_sp_size,
310 xge_hal_dtr_h dtr_sp);
312 __HAL_STATIC_FIFO __HAL_INLINE_FIFO void
313 xge_hal_fifo_dtr_post(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh);
315 __HAL_STATIC_FIFO __HAL_INLINE_FIFO void
316 xge_hal_fifo_dtr_post_many(xge_hal_channel_h channelh, int num,
317 xge_hal_dtr_h dtrs[]);
319 __HAL_STATIC_FIFO __HAL_INLINE_FIFO xge_hal_status_e
320 xge_hal_fifo_dtr_next_completed(xge_hal_channel_h channelh, xge_hal_dtr_h *dtrh,
323 __HAL_STATIC_FIFO __HAL_INLINE_FIFO void
324 xge_hal_fifo_dtr_free(xge_hal_channel_h channelh, xge_hal_dtr_h dtr);
326 __HAL_STATIC_FIFO __HAL_INLINE_FIFO void
327 xge_hal_fifo_dtr_buffer_set(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh,
328 int frag_idx, dma_addr_t dma_pointer, int size);
330 __HAL_STATIC_FIFO __HAL_INLINE_FIFO xge_hal_status_e
331 xge_hal_fifo_dtr_buffer_set_aligned(xge_hal_channel_h channelh,
332 xge_hal_dtr_h dtrh, int frag_idx, void *vaddr,
333 dma_addr_t dma_pointer, int size, int misaligned_size);
335 __HAL_STATIC_FIFO __HAL_INLINE_FIFO xge_hal_status_e
336 xge_hal_fifo_dtr_buffer_append(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh,
337 void *vaddr, int size);
339 __HAL_STATIC_FIFO __HAL_INLINE_FIFO void
340 xge_hal_fifo_dtr_buffer_finalize(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh,
343 __HAL_STATIC_FIFO __HAL_INLINE_FIFO void
344 xge_hal_fifo_dtr_mss_set(xge_hal_dtr_h dtrh, int mss);
346 __HAL_STATIC_FIFO __HAL_INLINE_FIFO void
347 xge_hal_fifo_dtr_cksum_set_bits(xge_hal_dtr_h dtrh, u64 cksum_bits);
349 __HAL_STATIC_FIFO __HAL_INLINE_FIFO void
350 xge_hal_fifo_dtr_vlan_set(xge_hal_dtr_h dtrh, u16 vlan_tag);
352 __HAL_STATIC_FIFO __HAL_INLINE_FIFO xge_hal_status_e
353 xge_hal_fifo_is_next_dtr_completed(xge_hal_channel_h channelh);
355 #else /* XGE_FASTPATH_EXTERN */
356 #define __HAL_STATIC_FIFO static
357 #define __HAL_INLINE_FIFO inline
358 #include <dev/nxge/xgehal/xgehal-fifo-fp.c>
359 #endif /* XGE_FASTPATH_INLINE */
363 #endif /* XGE_HAL_FIFO_H */