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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-11 11:12:33 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-11 11:12:33 -0700 |
commit | 69585dd69e663a40729492c7b52eb82477a2027a (patch) | |
tree | 5c179ca88b70856a7f9b56e10151ffa5480f0284 /drivers/scsi/bfa/bfa_sgpg_priv.h | |
parent | bd381934bf13ccb1af2813ae26c6fe00ec85d254 (diff) | |
parent | c7922a911c42c5a8bdee6cc75eb6bd66937d4217 (diff) | |
download | op-kernel-dev-69585dd69e663a40729492c7b52eb82477a2027a.zip op-kernel-dev-69585dd69e663a40729492c7b52eb82477a2027a.tar.gz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (34 commits)
[SCSI] qla2xxx: Fix NULL ptr deref bug in fail path during queue create
[SCSI] st: fix possible memory use after free after MTSETBLK ioctl
[SCSI] be2iscsi: Moving to pci_pools v3
[SCSI] libiscsi: iscsi_session_setup to allow for private space
[SCSI] be2iscsi: add 10Gbps iSCSI - BladeEngine 2 driver
[SCSI] zfcp: Fix hang when offlining device with offline chpid
[SCSI] zfcp: Fix lockdep warning when offlining device with offline chpid
[SCSI] zfcp: Fix oops during shutdown of offline device
[SCSI] zfcp: Fix initial device and cfdc for delayed adapter allocation
[SCSI] zfcp: correctly initialize unchained requests
[SCSI] mpt2sas: Bump version 02.100.03.00
[SCSI] mpt2sas: Support dev remove when phy status is MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT
[SCSI] mpt2sas: Timeout occurred within the HANDSHAKE logic while waiting on firmware to ACK.
[SCSI] mpt2sas: Call init_completion on a per request basis.
[SCSI] mpt2sas: Target Reset will be issued from Interrupt context.
[SCSI] mpt2sas: Added SCSIIO, Internal and high priority memory pools to support multiple TM
[SCSI] mpt2sas: Copyright change to 2009.
[SCSI] mpt2sas: Added mpi2_history.txt for MPI2 headers.
[SCSI] mpt2sas: Update driver to MPI2 REV K headers.
[SCSI] bfa: Brocade BFA FC SCSI driver
...
Diffstat (limited to 'drivers/scsi/bfa/bfa_sgpg_priv.h')
-rw-r--r-- | drivers/scsi/bfa/bfa_sgpg_priv.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/scsi/bfa/bfa_sgpg_priv.h b/drivers/scsi/bfa/bfa_sgpg_priv.h new file mode 100644 index 0000000..9c2a8cb --- /dev/null +++ b/drivers/scsi/bfa/bfa_sgpg_priv.h @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2005-2009 Brocade Communications Systems, Inc. + * All rights reserved + * www.brocade.com + * + * Linux driver for Brocade Fibre Channel Host Bus Adapter. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License (GPL) Version 2 as + * published by the Free Software Foundation + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +/** + * hal_sgpg.h BFA SG page module + */ + +#ifndef __BFA_SGPG_PRIV_H__ +#define __BFA_SGPG_PRIV_H__ + +#include <cs/bfa_q.h> + +#define BFA_SGPG_MIN (16) + +/** + * Alignment macro for SG page allocation + */ +#define BFA_SGPG_ROUNDUP(_l) (((_l) + (sizeof(struct bfi_sgpg_s) - 1)) \ + & ~(sizeof(struct bfi_sgpg_s) - 1)) + +struct bfa_sgpg_wqe_s { + struct list_head qe; /* queue sg page element */ + int nsgpg; /* pages to be allocated */ + int nsgpg_total; /* total pages required */ + void (*cbfn) (void *cbarg); + /* callback function */ + void *cbarg; /* callback arg */ + struct list_head sgpg_q; /* queue of alloced sgpgs */ +}; + +struct bfa_sgpg_s { + struct list_head qe; /* queue sg page element */ + struct bfi_sgpg_s *sgpg; /* va of SG page */ + union bfi_addr_u sgpg_pa;/* pa of SG page */ +}; + +/** + * Given number of SG elements, BFA_SGPG_NPAGE() returns the number of + * SG pages required. + */ +#define BFA_SGPG_NPAGE(_nsges) (((_nsges) / BFI_SGPG_DATA_SGES) + 1) + +struct bfa_sgpg_mod_s { + struct bfa_s *bfa; + int num_sgpgs; /* number of SG pages */ + int free_sgpgs; /* number of free SG pages */ + struct bfa_sgpg_s *hsgpg_arr; /* BFA SG page array */ + struct bfi_sgpg_s *sgpg_arr; /* actual SG page array */ + u64 sgpg_arr_pa; /* SG page array DMA addr */ + struct list_head sgpg_q; /* queue of free SG pages */ + struct list_head sgpg_wait_q; /* wait queue for SG pages */ +}; +#define BFA_SGPG_MOD(__bfa) (&(__bfa)->modules.sgpg_mod) + +bfa_status_t bfa_sgpg_malloc(struct bfa_s *bfa, struct list_head *sgpg_q, + int nsgpgs); +void bfa_sgpg_mfree(struct bfa_s *bfa, struct list_head *sgpg_q, + int nsgpgs); +void bfa_sgpg_winit(struct bfa_sgpg_wqe_s *wqe, + void (*cbfn) (void *cbarg), void *cbarg); +void bfa_sgpg_wait(struct bfa_s *bfa, struct bfa_sgpg_wqe_s *wqe, + int nsgpgs); +void bfa_sgpg_wcancel(struct bfa_s *bfa, struct bfa_sgpg_wqe_s *wqe); + +#endif /* __BFA_SGPG_PRIV_H__ */ |