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Merge tag 'ntb-5.1' of git://github.com/jonmason/ntb

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Pull NTB updates from Jon Mason:

 - fixes for switchtec debugability and mapping table entries

 - NTB transport improvements

 - a reworking of the peer_db_addr for better abstraction

* tag 'ntb-5.1' of git://github.com/jonmason/ntb:
  NTB: add new parameter to peer_db_addr() db_bit and db_data
  NTB: ntb_transport: Ensure the destination buffer is mapped for TX DMA
  NTB: ntb_transport: Free MWs in ntb_transport_link_cleanup()
  ntb_hw_switchtec: Added support of >=4G memory windows
  ntb_hw_switchtec: NT req id mapping table register entry number should be 512
  ntb_hw_switchtec: debug print 64bit aligned crosslink BAR Numbers
This commit is contained in:
Linus Torvalds
2019-03-15 14:32:59 -07:00
parent 2b9c272cf5 ebb09b33c6
commit e8a71a3866
7 changed files with 113 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
include/linux/ntb.h
View File

@@ -296,7 +296,8 @@ struct ntb_dev_ops {
int (*db_clear_mask)(struct ntb_dev *ntb, u64 db_bits);
int (*peer_db_addr)(struct ntb_dev *ntb,
phys_addr_t *db_addr, resource_size_t *db_size);
phys_addr_t *db_addr, resource_size_t *db_size,
u64 *db_data, int db_bit);
u64 (*peer_db_read)(struct ntb_dev *ntb);
int (*peer_db_set)(struct ntb_dev *ntb, u64 db_bits);
int (*peer_db_clear)(struct ntb_dev *ntb, u64 db_bits);
@@ -1078,6 +1079,8 @@ static inline int ntb_db_clear_mask(struct ntb_dev *ntb, u64 db_bits)
* @ntb: NTB device context.
* @db_addr: OUT - The address of the peer doorbell register.
* @db_size: OUT - The number of bytes to write the peer doorbell register.
* @db_data: OUT - The data of peer doorbell register
* @db_bit: door bell bit number
*
* Return the address of the peer doorbell register. This may be used, for
* example, by drivers that offload memory copy operations to a dma engine.
@@ -1091,12 +1094,13 @@ static inline int ntb_db_clear_mask(struct ntb_dev *ntb, u64 db_bits)
*/
static inline int ntb_peer_db_addr(struct ntb_dev *ntb,
phys_addr_t *db_addr,
resource_size_t *db_size)
resource_size_t *db_size,
u64 *db_data, int db_bit)
{
if (!ntb->ops->peer_db_addr)
return -EINVAL;
return ntb->ops->peer_db_addr(ntb, db_addr, db_size);
return ntb->ops->peer_db_addr(ntb, db_addr, db_size, db_data, db_bit);
}
/**

10
include/linux/switchtec.h
View File

@@ -248,9 +248,13 @@ struct ntb_ctrl_regs {
u32 win_size;
u64 xlate_addr;
} bar_entry[6];
u32 reserved2[216];
u32 req_id_table[256];
u32 reserved3[512];
struct {
u32 win_size;
u32 reserved[3];
} bar_ext_entry[6];
u32 reserved2[192];
u32 req_id_table[512];
u32 reserved3[256];
u64 lut_entry[512];
} __packed;