i2o.h
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上传日期:2009-04-28
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- /*
- * I2O kernel space accessible structures/APIs
- *
- * (c) Copyright 1999, 2000 Red Hat Software
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- *************************************************************************
- *
- * This header file defined the I2O APIs/structures for use by
- * the I2O kernel modules.
- *
- */
- #ifndef _I2O_H
- #define _I2O_H
- #ifdef __KERNEL__ /* This file to be included by kernel only */
- #include <linux/i2o-dev.h>
- /* How many different OSM's are we allowing */
- #define I2O_MAX_DRIVERS 8
- #include <asm/io.h>
- #include <asm/semaphore.h> /* Needed for MUTEX init macros */
- #include <linux/pci.h>
- #include <linux/dma-mapping.h>
- /* message queue empty */
- #define I2O_QUEUE_EMPTY 0xffffffff
- /*
- * Message structures
- */
- struct i2o_message {
- union {
- struct {
- u8 version_offset;
- u8 flags;
- u16 size;
- u32 target_tid:12;
- u32 init_tid:12;
- u32 function:8;
- u32 icntxt; /* initiator context */
- u32 tcntxt; /* transaction context */
- } s;
- u32 head[4];
- } u;
- /* List follows */
- u32 body[0];
- };
- /*
- * Each I2O device entity has one of these. There is one per device.
- */
- struct i2o_device {
- i2o_lct_entry lct_data; /* Device LCT information */
- struct i2o_controller *iop; /* Controlling IOP */
- struct list_head list; /* node in IOP devices list */
- struct device device;
- struct semaphore lock; /* device lock */
- struct class_device classdev; /* i2o device class */
- };
- /*
- * Event structure provided to the event handling function
- */
- struct i2o_event {
- struct work_struct work;
- struct i2o_device *i2o_dev; /* I2O device pointer from which the
- event reply was initiated */
- u16 size; /* Size of data in 32-bit words */
- u32 tcntxt; /* Transaction context used at
- registration */
- u32 event_indicator; /* Event indicator from reply */
- u32 data[0]; /* Event data from reply */
- };
- /*
- * I2O classes which could be handled by the OSM
- */
- struct i2o_class_id {
- u16 class_id:12;
- };
- /*
- * I2O driver structure for OSMs
- */
- struct i2o_driver {
- char *name; /* OSM name */
- int context; /* Low 8 bits of the transaction info */
- struct i2o_class_id *classes; /* I2O classes that this OSM handles */
- /* Message reply handler */
- int (*reply) (struct i2o_controller *, u32, struct i2o_message *);
- /* Event handler */
- void (*event) (struct i2o_event *);
- struct workqueue_struct *event_queue; /* Event queue */
- struct device_driver driver;
- /* notification of changes */
- void (*notify_controller_add) (struct i2o_controller *);
- void (*notify_controller_remove) (struct i2o_controller *);
- void (*notify_device_add) (struct i2o_device *);
- void (*notify_device_remove) (struct i2o_device *);
- struct semaphore lock;
- };
- /*
- * Contains DMA mapped address information
- */
- struct i2o_dma {
- void *virt;
- dma_addr_t phys;
- size_t len;
- };
- /*
- * Contains IO mapped address information
- */
- struct i2o_io {
- void __iomem *virt;
- unsigned long phys;
- unsigned long len;
- };
- /*
- * Context queue entry, used for 32-bit context on 64-bit systems
- */
- struct i2o_context_list_element {
- struct list_head list;
- u32 context;
- void *ptr;
- unsigned long timestamp;
- };
- /*
- * Each I2O controller has one of these objects
- */
- struct i2o_controller {
- char name[16];
- int unit;
- int type;
- struct pci_dev *pdev; /* PCI device */
- unsigned int promise:1; /* Promise controller */
- unsigned int adaptec:1; /* DPT / Adaptec controller */
- unsigned int raptor:1; /* split bar */
- unsigned int no_quiesce:1; /* dont quiesce before reset */
- unsigned int short_req:1; /* use small block sizes */
- unsigned int limit_sectors:1; /* limit number of sectors / request */
- unsigned int pae_support:1; /* controller has 64-bit SGL support */
- struct list_head devices; /* list of I2O devices */
- struct list_head list; /* Controller list */
- void __iomem *in_port; /* Inbout port address */
- void __iomem *out_port; /* Outbound port address */
- void __iomem *irq_status; /* Interrupt status register address */
- void __iomem *irq_mask; /* Interrupt mask register address */
- /* Dynamic LCT related data */
- struct i2o_dma status; /* IOP status block */
- struct i2o_dma hrt; /* HW Resource Table */
- i2o_lct *lct; /* Logical Config Table */
- struct i2o_dma dlct; /* Temp LCT */
- struct semaphore lct_lock; /* Lock for LCT updates */
- struct i2o_dma status_block; /* IOP status block */
- struct i2o_io base; /* controller messaging unit */
- struct i2o_io in_queue; /* inbound message queue Host->IOP */
- struct i2o_dma out_queue; /* outbound message queue IOP->Host */
- unsigned int battery:1; /* Has a battery backup */
- unsigned int io_alloc:1; /* An I/O resource was allocated */
- unsigned int mem_alloc:1; /* A memory resource was allocated */
- struct resource io_resource; /* I/O resource allocated to the IOP */
- struct resource mem_resource; /* Mem resource allocated to the IOP */
- struct device device;
- struct class_device classdev; /* I2O controller class */
- struct i2o_device *exec; /* Executive */
- #if BITS_PER_LONG == 64
- spinlock_t context_list_lock; /* lock for context_list */
- atomic_t context_list_counter; /* needed for unique contexts */
- struct list_head context_list; /* list of context id's
- and pointers */
- #endif
- spinlock_t lock; /* lock for controller
- configuration */
- void *driver_data[I2O_MAX_DRIVERS]; /* storage for drivers */
- };
- /*
- * I2O System table entry
- *
- * The system table contains information about all the IOPs in the
- * system. It is sent to all IOPs so that they can create peer2peer
- * connections between them.
- */
- struct i2o_sys_tbl_entry {
- u16 org_id;
- u16 reserved1;
- u32 iop_id:12;
- u32 reserved2:20;
- u16 seg_num:12;
- u16 i2o_version:4;
- u8 iop_state;
- u8 msg_type;
- u16 frame_size;
- u16 reserved3;
- u32 last_changed;
- u32 iop_capabilities;
- u32 inbound_low;
- u32 inbound_high;
- };
- struct i2o_sys_tbl {
- u8 num_entries;
- u8 version;
- u16 reserved1;
- u32 change_ind;
- u32 reserved2;
- u32 reserved3;
- struct i2o_sys_tbl_entry iops[0];
- };
- extern struct list_head i2o_controllers;
- /* Message functions */
- static inline u32 i2o_msg_get(struct i2o_controller *,
- struct i2o_message __iomem **);
- extern u32 i2o_msg_get_wait(struct i2o_controller *,
- struct i2o_message __iomem **, int);
- static inline void i2o_msg_post(struct i2o_controller *, u32);
- static inline int i2o_msg_post_wait(struct i2o_controller *, u32,
- unsigned long);
- extern int i2o_msg_post_wait_mem(struct i2o_controller *, u32, unsigned long,
- struct i2o_dma *);
- extern void i2o_msg_nop(struct i2o_controller *, u32);
- static inline void i2o_flush_reply(struct i2o_controller *, u32);
- /* IOP functions */
- extern int i2o_status_get(struct i2o_controller *);
- extern int i2o_event_register(struct i2o_device *, struct i2o_driver *, int,
- u32);
- extern struct i2o_device *i2o_iop_find_device(struct i2o_controller *, u16);
- extern struct i2o_controller *i2o_find_iop(int);
- /* Functions needed for handling 64-bit pointers in 32-bit context */
- #if BITS_PER_LONG == 64
- extern u32 i2o_cntxt_list_add(struct i2o_controller *, void *);
- extern void *i2o_cntxt_list_get(struct i2o_controller *, u32);
- extern u32 i2o_cntxt_list_remove(struct i2o_controller *, void *);
- extern u32 i2o_cntxt_list_get_ptr(struct i2o_controller *, void *);
- static inline u32 i2o_ptr_low(void *ptr)
- {
- return (u32) (u64) ptr;
- };
- static inline u32 i2o_ptr_high(void *ptr)
- {
- return (u32) ((u64) ptr >> 32);
- };
- static inline u32 i2o_dma_low(dma_addr_t dma_addr)
- {
- return (u32) (u64) dma_addr;
- };
- static inline u32 i2o_dma_high(dma_addr_t dma_addr)
- {
- return (u32) ((u64) dma_addr >> 32);
- };
- #else
- static inline u32 i2o_cntxt_list_add(struct i2o_controller *c, void *ptr)
- {
- return (u32) ptr;
- };
- static inline void *i2o_cntxt_list_get(struct i2o_controller *c, u32 context)
- {
- return (void *)context;
- };
- static inline u32 i2o_cntxt_list_remove(struct i2o_controller *c, void *ptr)
- {
- return (u32) ptr;
- };
- static inline u32 i2o_cntxt_list_get_ptr(struct i2o_controller *c, void *ptr)
- {
- return (u32) ptr;
- };
- static inline u32 i2o_ptr_low(void *ptr)
- {
- return (u32) ptr;
- };
- static inline u32 i2o_ptr_high(void *ptr)
- {
- return 0;
- };
- static inline u32 i2o_dma_low(dma_addr_t dma_addr)
- {
- return (u32) dma_addr;
- };
- static inline u32 i2o_dma_high(dma_addr_t dma_addr)
- {
- return 0;
- };
- #endif
- /**
- * i2o_sg_tablesize - Calculate the maximum number of elements in a SGL
- * @c: I2O controller for which the calculation should be done
- * @body_size: maximum body size used for message in 32-bit words.
- *
- * Return the maximum number of SG elements in a SG list.
- */
- static inline u16 i2o_sg_tablesize(struct i2o_controller *c, u16 body_size)
- {
- i2o_status_block *sb = c->status_block.virt;
- u16 sg_count =
- (sb->inbound_frame_size - sizeof(struct i2o_message) / 4) -
- body_size;
- if (c->pae_support) {
- /*
- * for 64-bit a SG attribute element must be added and each
- * SG element needs 12 bytes instead of 8.
- */
- sg_count -= 2;
- sg_count /= 3;
- } else
- sg_count /= 2;
- if (c->short_req && (sg_count > 8))
- sg_count = 8;
- return sg_count;
- };
- /**
- * i2o_dma_map_single - Map pointer to controller and fill in I2O message.
- * @c: I2O controller
- * @ptr: pointer to the data which should be mapped
- * @size: size of data in bytes
- * @direction: DMA_TO_DEVICE / DMA_FROM_DEVICE
- * @sg_ptr: pointer to the SG list inside the I2O message
- *
- * This function does all necessary DMA handling and also writes the I2O
- * SGL elements into the I2O message. For details on DMA handling see also
- * dma_map_single(). The pointer sg_ptr will only be set to the end of the
- * SG list if the allocation was successful.
- *
- * Returns DMA address which must be checked for failures using
- * dma_mapping_error().
- */
- static inline dma_addr_t i2o_dma_map_single(struct i2o_controller *c, void *ptr,
- size_t size,
- enum dma_data_direction direction,
- u32 __iomem ** sg_ptr)
- {
- u32 sg_flags;
- u32 __iomem *mptr = *sg_ptr;
- dma_addr_t dma_addr;
- switch (direction) {
- case DMA_TO_DEVICE:
- sg_flags = 0xd4000000;
- break;
- case DMA_FROM_DEVICE:
- sg_flags = 0xd0000000;
- break;
- default:
- return 0;
- }
- dma_addr = dma_map_single(&c->pdev->dev, ptr, size, direction);
- if (!dma_mapping_error(dma_addr)) {
- #ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
- if ((sizeof(dma_addr_t) > 4) && c->pae_support) {
- writel(0x7C020002, mptr++);
- writel(PAGE_SIZE, mptr++);
- }
- #endif
- writel(sg_flags | size, mptr++);
- writel(i2o_dma_low(dma_addr), mptr++);
- #ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
- if ((sizeof(dma_addr_t) > 4) && c->pae_support)
- writel(i2o_dma_high(dma_addr), mptr++);
- #endif
- *sg_ptr = mptr;
- }
- return dma_addr;
- };
- /**
- * i2o_dma_map_sg - Map a SG List to controller and fill in I2O message.
- * @c: I2O controller
- * @sg: SG list to be mapped
- * @sg_count: number of elements in the SG list
- * @direction: DMA_TO_DEVICE / DMA_FROM_DEVICE
- * @sg_ptr: pointer to the SG list inside the I2O message
- *
- * This function does all necessary DMA handling and also writes the I2O
- * SGL elements into the I2O message. For details on DMA handling see also
- * dma_map_sg(). The pointer sg_ptr will only be set to the end of the SG
- * list if the allocation was successful.
- *
- * Returns 0 on failure or 1 on success.
- */
- static inline int i2o_dma_map_sg(struct i2o_controller *c,
- struct scatterlist *sg, int sg_count,
- enum dma_data_direction direction,
- u32 __iomem ** sg_ptr)
- {
- u32 sg_flags;
- u32 __iomem *mptr = *sg_ptr;
- switch (direction) {
- case DMA_TO_DEVICE:
- sg_flags = 0x14000000;
- break;
- case DMA_FROM_DEVICE:
- sg_flags = 0x10000000;
- break;
- default:
- return 0;
- }
- sg_count = dma_map_sg(&c->pdev->dev, sg, sg_count, direction);
- if (!sg_count)
- return 0;
- #ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
- if ((sizeof(dma_addr_t) > 4) && c->pae_support) {
- writel(0x7C020002, mptr++);
- writel(PAGE_SIZE, mptr++);
- }
- #endif
- while (sg_count-- > 0) {
- if (!sg_count)
- sg_flags |= 0xC0000000;
- writel(sg_flags | sg_dma_len(sg), mptr++);
- writel(i2o_dma_low(sg_dma_address(sg)), mptr++);
- #ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
- if ((sizeof(dma_addr_t) > 4) && c->pae_support)
- writel(i2o_dma_high(sg_dma_address(sg)), mptr++);
- #endif
- sg++;
- }
- *sg_ptr = mptr;
- return 1;
- };
- /**
- * i2o_dma_alloc - Allocate DMA memory
- * @dev: struct device pointer to the PCI device of the I2O controller
- * @addr: i2o_dma struct which should get the DMA buffer
- * @len: length of the new DMA memory
- * @gfp_mask: GFP mask
- *
- * Allocate a coherent DMA memory and write the pointers into addr.
- *
- * Returns 0 on success or -ENOMEM on failure.
- */
- static inline int i2o_dma_alloc(struct device *dev, struct i2o_dma *addr,
- size_t len, unsigned int gfp_mask)
- {
- struct pci_dev *pdev = to_pci_dev(dev);
- int dma_64 = 0;
- if ((sizeof(dma_addr_t) > 4) && (pdev->dma_mask == DMA_64BIT_MASK)) {
- dma_64 = 1;
- if (pci_set_dma_mask(pdev, DMA_32BIT_MASK))
- return -ENOMEM;
- }
- addr->virt = dma_alloc_coherent(dev, len, &addr->phys, gfp_mask);
- if ((sizeof(dma_addr_t) > 4) && dma_64)
- if (pci_set_dma_mask(pdev, DMA_64BIT_MASK))
- printk(KERN_WARNING "i2o: unable to set 64-bit DMA");
- if (!addr->virt)
- return -ENOMEM;
- memset(addr->virt, 0, len);
- addr->len = len;
- return 0;
- };
- /**
- * i2o_dma_free - Free DMA memory
- * @dev: struct device pointer to the PCI device of the I2O controller
- * @addr: i2o_dma struct which contains the DMA buffer
- *
- * Free a coherent DMA memory and set virtual address of addr to NULL.
- */
- static inline void i2o_dma_free(struct device *dev, struct i2o_dma *addr)
- {
- if (addr->virt) {
- if (addr->phys)
- dma_free_coherent(dev, addr->len, addr->virt,
- addr->phys);
- else
- kfree(addr->virt);
- addr->virt = NULL;
- }
- };
- /**
- * i2o_dma_realloc - Realloc DMA memory
- * @dev: struct device pointer to the PCI device of the I2O controller
- * @addr: pointer to a i2o_dma struct DMA buffer
- * @len: new length of memory
- * @gfp_mask: GFP mask
- *
- * If there was something allocated in the addr, free it first. If len > 0
- * than try to allocate it and write the addresses back to the addr
- * structure. If len == 0 set the virtual address to NULL.
- *
- * Returns the 0 on success or negative error code on failure.
- */
- static inline int i2o_dma_realloc(struct device *dev, struct i2o_dma *addr,
- size_t len, unsigned int gfp_mask)
- {
- i2o_dma_free(dev, addr);
- if (len)
- return i2o_dma_alloc(dev, addr, len, gfp_mask);
- return 0;
- };
- /* I2O driver (OSM) functions */
- extern int i2o_driver_register(struct i2o_driver *);
- extern void i2o_driver_unregister(struct i2o_driver *);
- /**
- * i2o_driver_notify_controller_add - Send notification of added controller
- * to a single I2O driver
- *
- * Send notification of added controller to a single registered driver.
- */
- static inline void i2o_driver_notify_controller_add(struct i2o_driver *drv,
- struct i2o_controller *c)
- {
- if (drv->notify_controller_add)
- drv->notify_controller_add(c);
- };
- /**
- * i2o_driver_notify_controller_remove - Send notification of removed
- * controller to a single I2O driver
- *
- * Send notification of removed controller to a single registered driver.
- */
- static inline void i2o_driver_notify_controller_remove(struct i2o_driver *drv,
- struct i2o_controller *c)
- {
- if (drv->notify_controller_remove)
- drv->notify_controller_remove(c);
- };
- /**
- * i2o_driver_notify_device_add - Send notification of added device to a
- * single I2O driver
- *
- * Send notification of added device to a single registered driver.
- */
- static inline void i2o_driver_notify_device_add(struct i2o_driver *drv,
- struct i2o_device *i2o_dev)
- {
- if (drv->notify_device_add)
- drv->notify_device_add(i2o_dev);
- };
- /**
- * i2o_driver_notify_device_remove - Send notification of removed device
- * to a single I2O driver
- *
- * Send notification of removed device to a single registered driver.
- */
- static inline void i2o_driver_notify_device_remove(struct i2o_driver *drv,
- struct i2o_device *i2o_dev)
- {
- if (drv->notify_device_remove)
- drv->notify_device_remove(i2o_dev);
- };
- extern void i2o_driver_notify_controller_add_all(struct i2o_controller *);
- extern void i2o_driver_notify_controller_remove_all(struct i2o_controller *);
- extern void i2o_driver_notify_device_add_all(struct i2o_device *);
- extern void i2o_driver_notify_device_remove_all(struct i2o_device *);
- /* I2O device functions */
- extern int i2o_device_claim(struct i2o_device *);
- extern int i2o_device_claim_release(struct i2o_device *);
- /* Exec OSM functions */
- extern int i2o_exec_lct_get(struct i2o_controller *);
- /* device / driver / kobject conversion functions */
- #define to_i2o_driver(drv) container_of(drv,struct i2o_driver, driver)
- #define to_i2o_device(dev) container_of(dev, struct i2o_device, device)
- #define to_i2o_controller(dev) container_of(dev, struct i2o_controller, device)
- #define kobj_to_i2o_device(kobj) to_i2o_device(container_of(kobj, struct device, kobj))
- /**
- * i2o_msg_get - obtain an I2O message from the IOP
- * @c: I2O controller
- * @msg: pointer to a I2O message pointer
- *
- * This function tries to get a message slot. If no message slot is
- * available do not wait until one is availabe (see also i2o_msg_get_wait).
- *
- * On a success the message is returned and the pointer to the message is
- * set in msg. The returned message is the physical page frame offset
- * address from the read port (see the i2o spec). If no message is
- * available returns I2O_QUEUE_EMPTY and msg is leaved untouched.
- */
- static inline u32 i2o_msg_get(struct i2o_controller *c,
- struct i2o_message __iomem ** msg)
- {
- u32 m = readl(c->in_port);
- if (m != I2O_QUEUE_EMPTY)
- *msg = c->in_queue.virt + m;
- return m;
- };
- /**
- * i2o_msg_post - Post I2O message to I2O controller
- * @c: I2O controller to which the message should be send
- * @m: the message identifier
- *
- * Post the message to the I2O controller.
- */
- static inline void i2o_msg_post(struct i2o_controller *c, u32 m)
- {
- writel(m, c->in_port);
- };
- /**
- * i2o_msg_post_wait - Post and wait a message and wait until return
- * @c: controller
- * @m: message to post
- * @timeout: time in seconds to wait
- *
- * This API allows an OSM to post a message and then be told whether or
- * not the system received a successful reply. If the message times out
- * then the value '-ETIMEDOUT' is returned.
- *
- * Returns 0 on success or negative error code on failure.
- */
- static inline int i2o_msg_post_wait(struct i2o_controller *c, u32 m,
- unsigned long timeout)
- {
- return i2o_msg_post_wait_mem(c, m, timeout, NULL);
- };
- /**
- * i2o_flush_reply - Flush reply from I2O controller
- * @c: I2O controller
- * @m: the message identifier
- *
- * The I2O controller must be informed that the reply message is not needed
- * anymore. If you forget to flush the reply, the message frame can't be
- * used by the controller anymore and is therefore lost.
- */
- static inline void i2o_flush_reply(struct i2o_controller *c, u32 m)
- {
- writel(m, c->out_port);
- };
- /**
- * i2o_out_to_virt - Turn an I2O message to a virtual address
- * @c: controller
- * @m: message engine value
- *
- * Turn a receive message from an I2O controller bus address into
- * a Linux virtual address. The shared page frame is a linear block
- * so we simply have to shift the offset. This function does not
- * work for sender side messages as they are ioremap objects
- * provided by the I2O controller.
- */
- static inline struct i2o_message *i2o_msg_out_to_virt(struct i2o_controller *c,
- u32 m)
- {
- BUG_ON(m < c->out_queue.phys
- || m >= c->out_queue.phys + c->out_queue.len);
- return c->out_queue.virt + (m - c->out_queue.phys);
- };
- /**
- * i2o_msg_in_to_virt - Turn an I2O message to a virtual address
- * @c: controller
- * @m: message engine value
- *
- * Turn a send message from an I2O controller bus address into
- * a Linux virtual address. The shared page frame is a linear block
- * so we simply have to shift the offset. This function does not
- * work for receive side messages as they are kmalloc objects
- * in a different pool.
- */
- static inline struct i2o_message __iomem *i2o_msg_in_to_virt(struct
- i2o_controller *c,
- u32 m)
- {
- return c->in_queue.virt + m;
- };
- /*
- * Endian handling wrapped into the macro - keeps the core code
- * cleaner.
- */
- #define i2o_raw_writel(val, mem) __raw_writel(cpu_to_le32(val), mem)
- extern int i2o_parm_field_get(struct i2o_device *, int, int, void *, int);
- extern int i2o_parm_table_get(struct i2o_device *, int, int, int, void *, int,
- void *, int);
- /* debugging and troubleshooting/diagnostic helpers. */
- #define osm_printk(level, format, arg...)
- printk(level "%s: " format, OSM_NAME , ## arg)
- #ifdef DEBUG
- #define osm_debug(format, arg...)
- osm_printk(KERN_DEBUG, format , ## arg)
- #else
- #define osm_debug(format, arg...)
- do { } while (0)
- #endif
- #define osm_err(format, arg...)
- osm_printk(KERN_ERR, format , ## arg)
- #define osm_info(format, arg...)
- osm_printk(KERN_INFO, format , ## arg)
- #define osm_warn(format, arg...)
- osm_printk(KERN_WARNING, format , ## arg)
- /* debugging functions */
- extern void i2o_report_status(const char *, const char *, struct i2o_message *);
- extern void i2o_dump_message(struct i2o_message *);
- extern void i2o_dump_hrt(struct i2o_controller *c);
- extern void i2o_debug_state(struct i2o_controller *c);
- /*
- * Cache strategies
- */
- /* The NULL strategy leaves everything up to the controller. This tends to be a
- * pessimal but functional choice.
- */
- #define CACHE_NULL 0
- /* Prefetch data when reading. We continually attempt to load the next 32 sectors
- * into the controller cache.
- */
- #define CACHE_PREFETCH 1
- /* Prefetch data when reading. We sometimes attempt to load the next 32 sectors
- * into the controller cache. When an I/O is less <= 8K we assume its probably
- * not sequential and don't prefetch (default)
- */
- #define CACHE_SMARTFETCH 2
- /* Data is written to the cache and then out on to the disk. The I/O must be
- * physically on the medium before the write is acknowledged (default without
- * NVRAM)
- */
- #define CACHE_WRITETHROUGH 17
- /* Data is written to the cache and then out on to the disk. The controller
- * is permitted to write back the cache any way it wants. (default if battery
- * backed NVRAM is present). It can be useful to set this for swap regardless of
- * battery state.
- */
- #define CACHE_WRITEBACK 18
- /* Optimise for under powered controllers, especially on RAID1 and RAID0. We
- * write large I/O's directly to disk bypassing the cache to avoid the extra
- * memory copy hits. Small writes are writeback cached
- */
- #define CACHE_SMARTBACK 19
- /* Optimise for under powered controllers, especially on RAID1 and RAID0. We
- * write large I/O's directly to disk bypassing the cache to avoid the extra
- * memory copy hits. Small writes are writethrough cached. Suitable for devices
- * lacking battery backup
- */
- #define CACHE_SMARTTHROUGH 20
- /*
- * Ioctl structures
- */
- #define BLKI2OGRSTRAT _IOR('2', 1, int)
- #define BLKI2OGWSTRAT _IOR('2', 2, int)
- #define BLKI2OSRSTRAT _IOW('2', 3, int)
- #define BLKI2OSWSTRAT _IOW('2', 4, int)
- /*
- * I2O Function codes
- */
- /*
- * Executive Class
- */
- #define I2O_CMD_ADAPTER_ASSIGN 0xB3
- #define I2O_CMD_ADAPTER_READ 0xB2
- #define I2O_CMD_ADAPTER_RELEASE 0xB5
- #define I2O_CMD_BIOS_INFO_SET 0xA5
- #define I2O_CMD_BOOT_DEVICE_SET 0xA7
- #define I2O_CMD_CONFIG_VALIDATE 0xBB
- #define I2O_CMD_CONN_SETUP 0xCA
- #define I2O_CMD_DDM_DESTROY 0xB1
- #define I2O_CMD_DDM_ENABLE 0xD5
- #define I2O_CMD_DDM_QUIESCE 0xC7
- #define I2O_CMD_DDM_RESET 0xD9
- #define I2O_CMD_DDM_SUSPEND 0xAF
- #define I2O_CMD_DEVICE_ASSIGN 0xB7
- #define I2O_CMD_DEVICE_RELEASE 0xB9
- #define I2O_CMD_HRT_GET 0xA8
- #define I2O_CMD_ADAPTER_CLEAR 0xBE
- #define I2O_CMD_ADAPTER_CONNECT 0xC9
- #define I2O_CMD_ADAPTER_RESET 0xBD
- #define I2O_CMD_LCT_NOTIFY 0xA2
- #define I2O_CMD_OUTBOUND_INIT 0xA1
- #define I2O_CMD_PATH_ENABLE 0xD3
- #define I2O_CMD_PATH_QUIESCE 0xC5
- #define I2O_CMD_PATH_RESET 0xD7
- #define I2O_CMD_STATIC_MF_CREATE 0xDD
- #define I2O_CMD_STATIC_MF_RELEASE 0xDF
- #define I2O_CMD_STATUS_GET 0xA0
- #define I2O_CMD_SW_DOWNLOAD 0xA9
- #define I2O_CMD_SW_UPLOAD 0xAB
- #define I2O_CMD_SW_REMOVE 0xAD
- #define I2O_CMD_SYS_ENABLE 0xD1
- #define I2O_CMD_SYS_MODIFY 0xC1
- #define I2O_CMD_SYS_QUIESCE 0xC3
- #define I2O_CMD_SYS_TAB_SET 0xA3
- /*
- * Utility Class
- */
- #define I2O_CMD_UTIL_NOP 0x00
- #define I2O_CMD_UTIL_ABORT 0x01
- #define I2O_CMD_UTIL_CLAIM 0x09
- #define I2O_CMD_UTIL_RELEASE 0x0B
- #define I2O_CMD_UTIL_PARAMS_GET 0x06
- #define I2O_CMD_UTIL_PARAMS_SET 0x05
- #define I2O_CMD_UTIL_EVT_REGISTER 0x13
- #define I2O_CMD_UTIL_EVT_ACK 0x14
- #define I2O_CMD_UTIL_CONFIG_DIALOG 0x10
- #define I2O_CMD_UTIL_DEVICE_RESERVE 0x0D
- #define I2O_CMD_UTIL_DEVICE_RELEASE 0x0F
- #define I2O_CMD_UTIL_LOCK 0x17
- #define I2O_CMD_UTIL_LOCK_RELEASE 0x19
- #define I2O_CMD_UTIL_REPLY_FAULT_NOTIFY 0x15
- /*
- * SCSI Host Bus Adapter Class
- */
- #define I2O_CMD_SCSI_EXEC 0x81
- #define I2O_CMD_SCSI_ABORT 0x83
- #define I2O_CMD_SCSI_BUSRESET 0x27
- /*
- * Bus Adapter Class
- */
- #define I2O_CMD_BUS_ADAPTER_RESET 0x85
- #define I2O_CMD_BUS_RESET 0x87
- #define I2O_CMD_BUS_SCAN 0x89
- #define I2O_CMD_BUS_QUIESCE 0x8b
- /*
- * Random Block Storage Class
- */
- #define I2O_CMD_BLOCK_READ 0x30
- #define I2O_CMD_BLOCK_WRITE 0x31
- #define I2O_CMD_BLOCK_CFLUSH 0x37
- #define I2O_CMD_BLOCK_MLOCK 0x49
- #define I2O_CMD_BLOCK_MUNLOCK 0x4B
- #define I2O_CMD_BLOCK_MMOUNT 0x41
- #define I2O_CMD_BLOCK_MEJECT 0x43
- #define I2O_CMD_BLOCK_POWER 0x70
- #define I2O_CMD_PRIVATE 0xFF
- /* Command status values */
- #define I2O_CMD_IN_PROGRESS 0x01
- #define I2O_CMD_REJECTED 0x02
- #define I2O_CMD_FAILED 0x03
- #define I2O_CMD_COMPLETED 0x04
- /* I2O API function return values */
- #define I2O_RTN_NO_ERROR 0
- #define I2O_RTN_NOT_INIT 1
- #define I2O_RTN_FREE_Q_EMPTY 2
- #define I2O_RTN_TCB_ERROR 3
- #define I2O_RTN_TRANSACTION_ERROR 4
- #define I2O_RTN_ADAPTER_ALREADY_INIT 5
- #define I2O_RTN_MALLOC_ERROR 6
- #define I2O_RTN_ADPTR_NOT_REGISTERED 7
- #define I2O_RTN_MSG_REPLY_TIMEOUT 8
- #define I2O_RTN_NO_STATUS 9
- #define I2O_RTN_NO_FIRM_VER 10
- #define I2O_RTN_NO_LINK_SPEED 11
- /* Reply message status defines for all messages */
- #define I2O_REPLY_STATUS_SUCCESS 0x00
- #define I2O_REPLY_STATUS_ABORT_DIRTY 0x01
- #define I2O_REPLY_STATUS_ABORT_NO_DATA_TRANSFER 0x02
- #define I2O_REPLY_STATUS_ABORT_PARTIAL_TRANSFER 0x03
- #define I2O_REPLY_STATUS_ERROR_DIRTY 0x04
- #define I2O_REPLY_STATUS_ERROR_NO_DATA_TRANSFER 0x05
- #define I2O_REPLY_STATUS_ERROR_PARTIAL_TRANSFER 0x06
- #define I2O_REPLY_STATUS_PROCESS_ABORT_DIRTY 0x08
- #define I2O_REPLY_STATUS_PROCESS_ABORT_NO_DATA_TRANSFER 0x09
- #define I2O_REPLY_STATUS_PROCESS_ABORT_PARTIAL_TRANSFER 0x0A
- #define I2O_REPLY_STATUS_TRANSACTION_ERROR 0x0B
- #define I2O_REPLY_STATUS_PROGRESS_REPORT 0x80
- /* Status codes and Error Information for Parameter functions */
- #define I2O_PARAMS_STATUS_SUCCESS 0x00
- #define I2O_PARAMS_STATUS_BAD_KEY_ABORT 0x01
- #define I2O_PARAMS_STATUS_BAD_KEY_CONTINUE 0x02
- #define I2O_PARAMS_STATUS_BUFFER_FULL 0x03
- #define I2O_PARAMS_STATUS_BUFFER_TOO_SMALL 0x04
- #define I2O_PARAMS_STATUS_FIELD_UNREADABLE 0x05
- #define I2O_PARAMS_STATUS_FIELD_UNWRITEABLE 0x06
- #define I2O_PARAMS_STATUS_INSUFFICIENT_FIELDS 0x07
- #define I2O_PARAMS_STATUS_INVALID_GROUP_ID 0x08
- #define I2O_PARAMS_STATUS_INVALID_OPERATION 0x09
- #define I2O_PARAMS_STATUS_NO_KEY_FIELD 0x0A
- #define I2O_PARAMS_STATUS_NO_SUCH_FIELD 0x0B
- #define I2O_PARAMS_STATUS_NON_DYNAMIC_GROUP 0x0C
- #define I2O_PARAMS_STATUS_OPERATION_ERROR 0x0D
- #define I2O_PARAMS_STATUS_SCALAR_ERROR 0x0E
- #define I2O_PARAMS_STATUS_TABLE_ERROR 0x0F
- #define I2O_PARAMS_STATUS_WRONG_GROUP_TYPE 0x10
- /* DetailedStatusCode defines for Executive, DDM, Util and Transaction error
- * messages: Table 3-2 Detailed Status Codes.*/
- #define I2O_DSC_SUCCESS 0x0000
- #define I2O_DSC_BAD_KEY 0x0002
- #define I2O_DSC_TCL_ERROR 0x0003
- #define I2O_DSC_REPLY_BUFFER_FULL 0x0004
- #define I2O_DSC_NO_SUCH_PAGE 0x0005
- #define I2O_DSC_INSUFFICIENT_RESOURCE_SOFT 0x0006
- #define I2O_DSC_INSUFFICIENT_RESOURCE_HARD 0x0007
- #define I2O_DSC_CHAIN_BUFFER_TOO_LARGE 0x0009
- #define I2O_DSC_UNSUPPORTED_FUNCTION 0x000A
- #define I2O_DSC_DEVICE_LOCKED 0x000B
- #define I2O_DSC_DEVICE_RESET 0x000C
- #define I2O_DSC_INAPPROPRIATE_FUNCTION 0x000D
- #define I2O_DSC_INVALID_INITIATOR_ADDRESS 0x000E
- #define I2O_DSC_INVALID_MESSAGE_FLAGS 0x000F
- #define I2O_DSC_INVALID_OFFSET 0x0010
- #define I2O_DSC_INVALID_PARAMETER 0x0011
- #define I2O_DSC_INVALID_REQUEST 0x0012
- #define I2O_DSC_INVALID_TARGET_ADDRESS 0x0013
- #define I2O_DSC_MESSAGE_TOO_LARGE 0x0014
- #define I2O_DSC_MESSAGE_TOO_SMALL 0x0015
- #define I2O_DSC_MISSING_PARAMETER 0x0016
- #define I2O_DSC_TIMEOUT 0x0017
- #define I2O_DSC_UNKNOWN_ERROR 0x0018
- #define I2O_DSC_UNKNOWN_FUNCTION 0x0019
- #define I2O_DSC_UNSUPPORTED_VERSION 0x001A
- #define I2O_DSC_DEVICE_BUSY 0x001B
- #define I2O_DSC_DEVICE_NOT_AVAILABLE 0x001C
- /* DetailedStatusCode defines for Block Storage Operation: Table 6-7 Detailed
- Status Codes.*/
- #define I2O_BSA_DSC_SUCCESS 0x0000
- #define I2O_BSA_DSC_MEDIA_ERROR 0x0001
- #define I2O_BSA_DSC_ACCESS_ERROR 0x0002
- #define I2O_BSA_DSC_DEVICE_FAILURE 0x0003
- #define I2O_BSA_DSC_DEVICE_NOT_READY 0x0004
- #define I2O_BSA_DSC_MEDIA_NOT_PRESENT 0x0005
- #define I2O_BSA_DSC_MEDIA_LOCKED 0x0006
- #define I2O_BSA_DSC_MEDIA_FAILURE 0x0007
- #define I2O_BSA_DSC_PROTOCOL_FAILURE 0x0008
- #define I2O_BSA_DSC_BUS_FAILURE 0x0009
- #define I2O_BSA_DSC_ACCESS_VIOLATION 0x000A
- #define I2O_BSA_DSC_WRITE_PROTECTED 0x000B
- #define I2O_BSA_DSC_DEVICE_RESET 0x000C
- #define I2O_BSA_DSC_VOLUME_CHANGED 0x000D
- #define I2O_BSA_DSC_TIMEOUT 0x000E
- /* FailureStatusCodes, Table 3-3 Message Failure Codes */
- #define I2O_FSC_TRANSPORT_SERVICE_SUSPENDED 0x81
- #define I2O_FSC_TRANSPORT_SERVICE_TERMINATED 0x82
- #define I2O_FSC_TRANSPORT_CONGESTION 0x83
- #define I2O_FSC_TRANSPORT_FAILURE 0x84
- #define I2O_FSC_TRANSPORT_STATE_ERROR 0x85
- #define I2O_FSC_TRANSPORT_TIME_OUT 0x86
- #define I2O_FSC_TRANSPORT_ROUTING_FAILURE 0x87
- #define I2O_FSC_TRANSPORT_INVALID_VERSION 0x88
- #define I2O_FSC_TRANSPORT_INVALID_OFFSET 0x89
- #define I2O_FSC_TRANSPORT_INVALID_MSG_FLAGS 0x8A
- #define I2O_FSC_TRANSPORT_FRAME_TOO_SMALL 0x8B
- #define I2O_FSC_TRANSPORT_FRAME_TOO_LARGE 0x8C
- #define I2O_FSC_TRANSPORT_INVALID_TARGET_ID 0x8D
- #define I2O_FSC_TRANSPORT_INVALID_INITIATOR_ID 0x8E
- #define I2O_FSC_TRANSPORT_INVALID_INITIATOR_CONTEXT 0x8F
- #define I2O_FSC_TRANSPORT_UNKNOWN_FAILURE 0xFF
- /* Device Claim Types */
- #define I2O_CLAIM_PRIMARY 0x01000000
- #define I2O_CLAIM_MANAGEMENT 0x02000000
- #define I2O_CLAIM_AUTHORIZED 0x03000000
- #define I2O_CLAIM_SECONDARY 0x04000000
- /* Message header defines for VersionOffset */
- #define I2OVER15 0x0001
- #define I2OVER20 0x0002
- /* Default is 1.5 */
- #define I2OVERSION I2OVER15
- #define SGL_OFFSET_0 I2OVERSION
- #define SGL_OFFSET_4 (0x0040 | I2OVERSION)
- #define SGL_OFFSET_5 (0x0050 | I2OVERSION)
- #define SGL_OFFSET_6 (0x0060 | I2OVERSION)
- #define SGL_OFFSET_7 (0x0070 | I2OVERSION)
- #define SGL_OFFSET_8 (0x0080 | I2OVERSION)
- #define SGL_OFFSET_9 (0x0090 | I2OVERSION)
- #define SGL_OFFSET_10 (0x00A0 | I2OVERSION)
- #define SGL_OFFSET_11 (0x00B0 | I2OVERSION)
- #define SGL_OFFSET_12 (0x00C0 | I2OVERSION)
- #define SGL_OFFSET(x) (((x)<<4) | I2OVERSION)
- /* Transaction Reply Lists (TRL) Control Word structure */
- #define TRL_SINGLE_FIXED_LENGTH 0x00
- #define TRL_SINGLE_VARIABLE_LENGTH 0x40
- #define TRL_MULTIPLE_FIXED_LENGTH 0x80
- /* msg header defines for MsgFlags */
- #define MSG_STATIC 0x0100
- #define MSG_64BIT_CNTXT 0x0200
- #define MSG_MULTI_TRANS 0x1000
- #define MSG_FAIL 0x2000
- #define MSG_FINAL 0x4000
- #define MSG_REPLY 0x8000
- /* minimum size msg */
- #define THREE_WORD_MSG_SIZE 0x00030000
- #define FOUR_WORD_MSG_SIZE 0x00040000
- #define FIVE_WORD_MSG_SIZE 0x00050000
- #define SIX_WORD_MSG_SIZE 0x00060000
- #define SEVEN_WORD_MSG_SIZE 0x00070000
- #define EIGHT_WORD_MSG_SIZE 0x00080000
- #define NINE_WORD_MSG_SIZE 0x00090000
- #define TEN_WORD_MSG_SIZE 0x000A0000
- #define ELEVEN_WORD_MSG_SIZE 0x000B0000
- #define I2O_MESSAGE_SIZE(x) ((x)<<16)
- /* special TID assignments */
- #define ADAPTER_TID 0
- #define HOST_TID 1
- /* outbound queue defines */
- #define I2O_MAX_OUTBOUND_MSG_FRAMES 128
- #define I2O_OUTBOUND_MSG_FRAME_SIZE 128 /* in 32-bit words */
- #define I2O_POST_WAIT_OK 0
- #define I2O_POST_WAIT_TIMEOUT -ETIMEDOUT
- #define I2O_CONTEXT_LIST_MIN_LENGTH 15
- #define I2O_CONTEXT_LIST_USED 0x01
- #define I2O_CONTEXT_LIST_DELETED 0x02
- /* timeouts */
- #define I2O_TIMEOUT_INIT_OUTBOUND_QUEUE 15
- #define I2O_TIMEOUT_MESSAGE_GET 5
- #define I2O_TIMEOUT_RESET 30
- #define I2O_TIMEOUT_STATUS_GET 5
- #define I2O_TIMEOUT_LCT_GET 360
- #define I2O_TIMEOUT_SCSI_SCB_ABORT 240
- /* retries */
- #define I2O_HRT_GET_TRIES 3
- #define I2O_LCT_GET_TRIES 3
- /* defines for max_sectors and max_phys_segments */
- #define I2O_MAX_SECTORS 1024
- #define I2O_MAX_SECTORS_LIMITED 256
- #define I2O_MAX_PHYS_SEGMENTS MAX_PHYS_SEGMENTS
- #endif /* __KERNEL__ */
- #endif /* _I2O_H */