diff options
Diffstat (limited to 'drivers/scsi/isci/isci.h')
| -rw-r--r-- | drivers/scsi/isci/isci.h | 90 |
1 files changed, 11 insertions, 79 deletions
diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h index 80cfb45f8da1..714ed926171b 100644 --- a/drivers/scsi/isci/isci.h +++ b/drivers/scsi/isci/isci.h @@ -78,39 +78,16 @@ enum sci_controller_mode { SCI_MODE_SIZE /* deprecated */ }; -#define SCI_MAX_PHYS (4) +#define SCI_MAX_PHYS (4UL) #define SCI_MAX_PORTS SCI_MAX_PHYS -#define SCI_MIN_SMP_PHYS (38) #define SCI_MAX_SMP_PHYS (384) /* not silicon constrained */ -#define SCI_MAX_REMOTE_DEVICES (256) -#define SCI_MIN_REMOTE_DEVICES (16) -#define SCI_MAX_IO_REQUESTS (256) -#define SCI_MIN_IO_REQUESTS (1) +#define SCI_MAX_REMOTE_DEVICES (256UL) +#define SCI_MAX_IO_REQUESTS (256UL) #define SCI_MAX_MSIX_MESSAGES (2) #define SCI_MAX_SCATTER_GATHER_ELEMENTS 130 /* not silicon constrained */ -#define SCI_MIN_SCATTER_GATHER_ELEMENTS 1 #define SCI_MAX_CONTROLLERS 2 #define SCI_MAX_DOMAINS SCI_MAX_PORTS -/* 2 indicates the maximum number of UFs that can occur for a given IO request. - * The hardware handles reception of additional unsolicited frames while all - * UFs are in use, by holding off the transmitting device. This number could - * be theoretically reduced to 1, but 2 provides for more reliable operation. - * During SATA PIO operation, it is possible under some conditions for there to - * be 3 separate FISes received, back to back to back (PIO Setup, Data, D2H - * Register). It is unlikely to have all 3 pending all at once without some of - * them already being processed. - */ -#define SCU_MIN_UNSOLICITED_FRAMES (1) -#define SCU_MIN_CRITICAL_NOTIFICATIONS (24) -#define SCU_MIN_EVENTS (4) -#define SCU_MIN_COMPLETION_QUEUE_SCRATCH (2) -#define SCU_MIN_COMPLETION_QUEUE_ENTRIES (SCU_MIN_CRITICAL_NOTIFICATIONS \ - + SCU_MIN_EVENTS \ - + SCU_MIN_UNSOLICITED_FRAMES \ - + SCI_MIN_IO_REQUESTS \ - + SCU_MIN_COMPLETION_QUEUE_SCRATCH) - #define SCU_MAX_CRITICAL_NOTIFICATIONS (384) #define SCU_MAX_EVENTS (128) #define SCU_MAX_UNSOLICITED_FRAMES (128) @@ -121,51 +98,6 @@ enum sci_controller_mode { + SCI_MAX_IO_REQUESTS \ + SCU_MAX_COMPLETION_QUEUE_SCRATCH) -#if !defined(ENABLE_MINIMUM_MEMORY_MODE) -#define SCU_UNSOLICITED_FRAME_COUNT SCU_MAX_UNSOLICITED_FRAMES -#define SCU_CRITICAL_NOTIFICATION_COUNT SCU_MAX_CRITICAL_NOTIFICATIONS -#define SCU_EVENT_COUNT SCU_MAX_EVENTS -#define SCU_COMPLETION_QUEUE_SCRATCH SCU_MAX_COMPLETION_QUEUE_SCRATCH -#define SCU_IO_REQUEST_COUNT SCI_MAX_IO_REQUESTS -#define SCU_IO_REQUEST_SGE_COUNT SCI_MAX_SCATTER_GATHER_ELEMENTS -#define SCU_COMPLETION_QUEUE_COUNT SCU_MAX_COMPLETION_QUEUE_ENTRIES -#else -#define SCU_UNSOLICITED_FRAME_COUNT SCU_MIN_UNSOLICITED_FRAMES -#define SCU_CRITICAL_NOTIFICATION_COUNT SCU_MIN_CRITICAL_NOTIFICATIONS -#define SCU_EVENT_COUNT SCU_MIN_EVENTS -#define SCU_COMPLETION_QUEUE_SCRATCH SCU_MIN_COMPLETION_QUEUE_SCRATCH -#define SCU_IO_REQUEST_COUNT SCI_MIN_IO_REQUESTS -#define SCU_IO_REQUEST_SGE_COUNT SCI_MIN_SCATTER_GATHER_ELEMENTS -#define SCU_COMPLETION_QUEUE_COUNT SCU_MIN_COMPLETION_QUEUE_ENTRIES -#endif /* !defined(ENABLE_MINIMUM_MEMORY_OPERATION) */ - -/** - * - * - * The SCU_COMPLETION_QUEUE_COUNT constant indicates the size of the completion - * queue into which the hardware DMAs 32-bit quantas (completion entries). - */ - -/** - * - * - * This queue must be programmed to a power of 2 size (e.g. 32, 64, 1024, etc.). - */ -#if (SCU_COMPLETION_QUEUE_COUNT != 16) && \ - (SCU_COMPLETION_QUEUE_COUNT != 32) && \ - (SCU_COMPLETION_QUEUE_COUNT != 64) && \ - (SCU_COMPLETION_QUEUE_COUNT != 128) && \ - (SCU_COMPLETION_QUEUE_COUNT != 256) && \ - (SCU_COMPLETION_QUEUE_COUNT != 512) && \ - (SCU_COMPLETION_QUEUE_COUNT != 1024) -#error "SCU_COMPLETION_QUEUE_COUNT must be set to a power of 2." -#endif - -#if SCU_MIN_UNSOLICITED_FRAMES > SCU_MAX_UNSOLICITED_FRAMES -#error "Invalid configuration of unsolicited frame constants" -#endif /* SCU_MIN_UNSOLICITED_FRAMES > SCU_MAX_UNSOLICITED_FRAMES */ - -#define SCU_MIN_UF_TABLE_ENTRIES (8) #define SCU_ABSOLUTE_MAX_UNSOLICITED_FRAMES (4096) #define SCU_UNSOLICITED_FRAME_BUFFER_SIZE (1024) #define SCU_INVALID_FRAME_INDEX (0xFFFF) @@ -173,14 +105,14 @@ enum sci_controller_mode { #define SCU_IO_REQUEST_MAX_SGE_SIZE (0x00FFFFFF) #define SCU_IO_REQUEST_MAX_TRANSFER_LENGTH (0x00FFFFFF) -/* - * Determine the size of the unsolicited frame array including - * unused buffers. */ -#if SCU_UNSOLICITED_FRAME_COUNT <= SCU_MIN_UF_TABLE_ENTRIES -#define SCU_UNSOLICITED_FRAME_CONTROL_ARRAY_SIZE SCU_MIN_UF_TABLE_ENTRIES -#else -#define SCU_UNSOLICITED_FRAME_CONTROL_ARRAY_SIZE SCU_MAX_UNSOLICITED_FRAMES -#endif /* SCU_UNSOLICITED_FRAME_COUNT <= SCU_MIN_UF_TABLE_ENTRIES */ +static inline void check_sizes(void) +{ + BUILD_BUG_ON_NOT_POWER_OF_2(SCU_MAX_EVENTS); + BUILD_BUG_ON(SCU_MAX_UNSOLICITED_FRAMES <= 8); + BUILD_BUG_ON_NOT_POWER_OF_2(SCU_MAX_UNSOLICITED_FRAMES); + BUILD_BUG_ON_NOT_POWER_OF_2(SCU_MAX_COMPLETION_QUEUE_ENTRIES); + BUILD_BUG_ON(SCU_MAX_UNSOLICITED_FRAMES > SCU_ABSOLUTE_MAX_UNSOLICITED_FRAMES); +} /** * enum sci_status - This is the general return status enumeration for non-IO, |