--- /dev/null
+/**
+ * Copyright (C) 2005 - 2015 Avago Technologies
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation. The full GNU General
+ * Public License is included in this distribution in the file called COPYING.
+ *
+ * Contact Information:
+ * linux-drivers@avagotech.com
+ *
+ * Avago Technologies
+ * 3333 Susan Street
+ * Costa Mesa, CA 92626
+ */
+
+#ifndef BEISCSI_H
+#define BEISCSI_H
+
+#include <linux/pci.h>
+#include <linux/if_vlan.h>
+#include <linux/blk-iopoll.h>
+#define FW_VER_LEN 32
+#define MCC_Q_LEN 128
+#define MCC_CQ_LEN 256
+#define MAX_MCC_CMD 16
+/* BladeEngine Generation numbers */
+#define BE_GEN2 2
+#define BE_GEN3 3
+#define BE_GEN4 4
+struct be_dma_mem {
+ void *va;
+ dma_addr_t dma;
+ u32 size;
+};
+
+struct be_queue_info {
+ struct be_dma_mem dma_mem;
+ u16 len;
+ u16 entry_size; /* Size of an element in the queue */
+ u16 id;
+ u16 tail, head;
+ bool created;
+ atomic_t used; /* Number of valid elements in the queue */
+};
+
+static inline u32 MODULO(u16 val, u16 limit)
+{
+ WARN_ON(limit & (limit - 1));
+ return val & (limit - 1);
+}
+
+static inline void index_inc(u16 *index, u16 limit)
+{
+ *index = MODULO((*index + 1), limit);
+}
+
+static inline void *queue_head_node(struct be_queue_info *q)
+{
+ return q->dma_mem.va + q->head * q->entry_size;
+}
+
+static inline void *queue_get_wrb(struct be_queue_info *q, unsigned int wrb_num)
+{
+ return q->dma_mem.va + wrb_num * q->entry_size;
+}
+
+static inline void *queue_tail_node(struct be_queue_info *q)
+{
+ return q->dma_mem.va + q->tail * q->entry_size;
+}
+
+static inline void queue_head_inc(struct be_queue_info *q)
+{
+ index_inc(&q->head, q->len);
+}
+
+static inline void queue_tail_inc(struct be_queue_info *q)
+{
+ index_inc(&q->tail, q->len);
+}
+
+/*ISCSI */
+
+struct be_aic_obj { /* Adaptive interrupt coalescing (AIC) info */
+ bool enable;
+ u32 min_eqd; /* in usecs */
+ u32 max_eqd; /* in usecs */
+ u32 prev_eqd; /* in usecs */
+ u32 et_eqd; /* configured val when aic is off */
+ ulong jiffs;
+ u64 eq_prev; /* Used to calculate eqe */
+};
+
+struct be_eq_obj {
+ bool todo_mcc_cq;
+ bool todo_cq;
+ u32 cq_count;
+ struct be_queue_info q;
+ struct beiscsi_hba *phba;
+ struct be_queue_info *cq;
+ struct work_struct work_cqs; /* Work Item */
+ struct blk_iopoll iopoll;
+};
+
+struct be_mcc_obj {
+ struct be_queue_info q;
+ struct be_queue_info cq;
+};
+
+struct beiscsi_mcc_tag_state {
+#define MCC_TAG_STATE_COMPLETED 0x00
+#define MCC_TAG_STATE_RUNNING 0x01
+#define MCC_TAG_STATE_TIMEOUT 0x02
+ uint8_t tag_state;
+ struct be_dma_mem tag_mem_state;
+};
+
+struct be_ctrl_info {
+ u8 __iomem *csr;
+ u8 __iomem *db; /* Door Bell */
+ u8 __iomem *pcicfg; /* PCI config space */
+ struct pci_dev *pdev;
+
+ /* Mbox used for cmd request/response */
+ spinlock_t mbox_lock; /* For serializing mbox cmds to BE card */
+ struct be_dma_mem mbox_mem;
+ /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
+ * is stored for freeing purpose */
+ struct be_dma_mem mbox_mem_alloced;
+
+ /* MCC Rings */
+ struct be_mcc_obj mcc_obj;
+ spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
+ spinlock_t mcc_cq_lock;
+
+ wait_queue_head_t mcc_wait[MAX_MCC_CMD + 1];
+ unsigned int mcc_tag[MAX_MCC_CMD];
+ unsigned int mcc_numtag[MAX_MCC_CMD + 1];
+ unsigned short mcc_alloc_index;
+ unsigned short mcc_free_index;
+ unsigned int mcc_tag_available;
+
+ struct beiscsi_mcc_tag_state ptag_state[MAX_MCC_CMD + 1];
+};
+
+#include "be_cmds.h"
+
+#define PAGE_SHIFT_4K 12
+#define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
+#define mcc_timeout 120000 /* 12s timeout */
+#define BEISCSI_LOGOUT_SYNC_DELAY 250
+
+/* Returns number of pages spanned by the data starting at the given addr */
+#define PAGES_4K_SPANNED(_address, size) \
+ ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
+ (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
+
+/* Returns bit offset within a DWORD of a bitfield */
+#define AMAP_BIT_OFFSET(_struct, field) \
+ (((size_t)&(((_struct *)0)->field))%32)
+
+/* Returns the bit mask of the field that is NOT shifted into location. */
+static inline u32 amap_mask(u32 bitsize)
+{
+ return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
+}
+
+static inline void amap_set(void *ptr, u32 dw_offset, u32 mask,
+ u32 offset, u32 value)
+{
+ u32 *dw = (u32 *) ptr + dw_offset;
+ *dw &= ~(mask << offset);
+ *dw |= (mask & value) << offset;
+}
+
+#define AMAP_SET_BITS(_struct, field, ptr, val) \
+ amap_set(ptr, \
+ offsetof(_struct, field)/32, \
+ amap_mask(sizeof(((_struct *)0)->field)), \
+ AMAP_BIT_OFFSET(_struct, field), \
+ val)
+
+static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
+{
+ u32 *dw = ptr;
+ return mask & (*(dw + dw_offset) >> offset);
+}
+
+#define AMAP_GET_BITS(_struct, field, ptr) \
+ amap_get(ptr, \
+ offsetof(_struct, field)/32, \
+ amap_mask(sizeof(((_struct *)0)->field)), \
+ AMAP_BIT_OFFSET(_struct, field))
+
+#define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
+#define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
+static inline void swap_dws(void *wrb, int len)
+{
+#ifdef __BIG_ENDIAN
+ u32 *dw = wrb;
+ WARN_ON(len % 4);
+ do {
+ *dw = cpu_to_le32(*dw);
+ dw++;
+ len -= 4;
+ } while (len);
+#endif /* __BIG_ENDIAN */
+}
+#endif /* BEISCSI_H */
Code Review / kvmfornfv.git / blobdiff