patch-2.4.8 linux/include/asm-s390x/chandev.h
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- Lines: 202
- Date:
Wed Jul 25 14:12:02 2001
- Orig file:
v2.4.7/linux/include/asm-s390x/chandev.h
- Orig date:
Wed Apr 11 19:02:29 2001
diff -u --recursive --new-file v2.4.7/linux/include/asm-s390x/chandev.h linux/include/asm-s390x/chandev.h
@@ -6,49 +6,86 @@
*
* Generic channel device initialisation support.
*/
+#ifndef __S390_CHANDEV_H
+#define __S390_CHANDEV_H
#include <linux/version.h>
#include <asm/types.h>
#include <linux/netdevice.h>
+
+/* Setting this flag to true causes a device name to be built based on the read_devno of the device */
+/* this is exported so external code can look at this flags setting */
+extern int chandev_use_devno_names;
+
+
/* chandev_type is a bitmask for registering & describing device types. */
typedef enum
{
- none=0x0,
- ctc=0x1,
- escon=0x2,
- lcs=0x4,
- osad=0x8,
- qeth=0x10,
- claw=0x20,
+ chandev_type_none=0x0,
+ chandev_type_ctc=0x1,
+ chandev_type_escon=0x2,
+ chandev_type_lcs=0x4,
+ chandev_type_osad=0x8,
+ chandev_type_qeth=0x10,
+ chandev_type_claw=0x20,
} chandev_type;
typedef enum
{
- no_category,
- network_device,
- serial_device,
+ chandev_category_none,
+ chandev_category_network_device,
+ chandev_category_serial_device,
} chandev_category;
+
+
+typedef struct
+{
+ int irq;
+ u16 devno;
+ u16 cu_type; /* control unit type */
+ u8 cu_model; /* control unit model */
+ u16 dev_type; /* device type */
+ u8 dev_model; /* device model */
+ u8 pim; /* path installed mask */
+ u8 chpid[8]; /* CHPID 0-7 (if available) */
+} chandev_subchannel_info;
+
+#define CLAW_NAMELEN 9
+/* CLAW specific parameters other drivers should ignore these fields */
+typedef struct
+{
+
+ char host_name[CLAW_NAMELEN]; /* local host name */
+ char adapter_name[CLAW_NAMELEN]; /* workstation adapter name */
+ char api_type[CLAW_NAMELEN]; /* API type either TCPIP or API */
+} chandev_claw_info;
+
/*
* The chandev_probeinfo structure is passed to the device driver with configuration
* info for which irq's & ports to use when attempting to probe the device.
*/
typedef struct
{
- int read_irq;
- int write_irq;
- u16 read_devno;
- u16 write_devno;
- s16 port_protocol_no; /* -1 don't care */
+ chandev_subchannel_info read;
+ chandev_subchannel_info write;
+ chandev_subchannel_info data;
+ /* memory_usage_in_k is the suggested memory the driver should attempt to use for io */
+ /* buffers -1 means use the driver default the driver should set this field to the */
+ /* amount of memory it actually uses when returning this probeinfo to the channel */
+ /* device layer with chandev_initdevice */
+ s32 memory_usage_in_k;
+ chandev_claw_info claw;
+ u8 data_exists; /* whether this device has a data channel */
+ u8 cu_dev_info_inconsistent; /* either ctc or we possibly had a bad sense_id */
+ u8 chpid_info_inconsistent; /* either ctc or schib info bad */
+ s16 port_protocol_no; /* 0 by default, set specifically when forcing */
u8 hint_port_no; /* lcs specific */
- u8 max_port_no; /* lcs specific */
+ u8 max_port_no; /* lcs/qeth specific */
chandev_type chan_type;
u8 checksum_received_ip_pkts;
u8 use_hw_stats; /* where available e.g. lcs */
- u16 cu_type; /* control unit type */
- u8 cu_model; /* control unit model */
- u16 dev_type; /* device type */
- u8 dev_model; /* device model */
+ u8 device_forced; /* indicates the device hasn't been autodetected */
char *parmstr; /* driver specific parameters added by add_parms keyword */
/* newdevice used internally by chandev.c */
struct chandev_activelist *newdevice;
@@ -75,19 +112,21 @@
typedef enum
{
- good=0,
- not_oper,
- first_msck=not_oper,
- no_path,
- revalidate,
- gone,
- last_msck,
+ chandev_status_good,
+ chandev_status_not_oper,
+ chandev_status_first_msck=chandev_status_not_oper,
+ chandev_status_no_path,
+ chandev_status_revalidate,
+ chandev_status_gone,
+ chandev_status_last_msck,
+ chandev_status_all_chans_good /* pseudo machine check to indicate all channels are healthy */
} chandev_msck_status;
typedef int (*chandev_probefunc)(chandev_probeinfo *probeinfo);
-typedef void (*chandev_shutdownfunc)(void *device);
+typedef int (*chandev_shutdownfunc)(void *device);
typedef void (*chandev_unregfunc)(void *device);
-typedef void (*chandev_reoperfunc)(void *device,int msck_for_read_chan,chandev_msck_status prevstatus);
+typedef void (*chandev_msck_notification_func)(void *device,int msck_irq,
+chandev_msck_status prevstatus,chandev_msck_status newstatus);
@@ -103,7 +142,7 @@
*/
int chandev_register_and_probe(chandev_probefunc probefunc,
chandev_shutdownfunc shutdownfunc,
- chandev_reoperfunc reoperfunc,
+ chandev_msck_notification_func msck_notfunc,
chandev_type chan_type);
/* The chandev_unregister function is typically called when a module is being removed
@@ -117,6 +156,33 @@
int chandev_initdevice(chandev_probeinfo *probeinfo,void *dev_ptr,u8 port_no,char *devname,
chandev_category category,chandev_unregfunc unreg_dev);
+/* This function builds a device name & copies it into destnamebuff suitable for calling
+ init_trdev or whatever & it honours the use_devno_names flag, it is used by chandev_initnetdevice
+ setting the buildfullname flag to TRUE will cause it to always build a full unique name based
+ on basename either honouring the chandev_use_devno_names flag if set or starting at index
+ 0 & checking the namespace of the channel device layer itself for a free index, this
+ may be useful when one doesn't have control of the name an upper layer may choose.
+ It returns NULL on error.
+*/
+char *chandev_build_device_name(chandev_probeinfo *probeinfo,char *destnamebuff,char *basename,int buildfullname);
+
+
+
+
+/* chandev_init_netdev registers with the normal network device layer */
+/* it doesn't update any of the chandev internal structures. */
+/* i.e. it is optional */
+/* it was part of chandev_initnetdevice but I separated it as */
+/* chandev_initnetdevice may make too many assumptions for some users */
+/* chandev_initnetdevice = chandev_initdevice followed by chandev_init_netdev */
+#if LINUX_VERSION_CODE>=KERNEL_VERSION(2,3,0)
+struct net_device *chandev_init_netdev(chandev_probeinfo *probeinfo,char *basename,
+struct net_device *dev, int sizeof_priv,struct net_device *(*init_netdevfunc)(struct net_device *dev, int sizeof_priv));
+#else
+struct device *chandev_init_netdev(chandev_probeinfo *probeinfo,char *basename,
+struct device *dev, int sizeof_priv,struct device *(*init_netdevfunc)(struct device *dev, int sizeof_priv));
+#endif
+
/* chandev_initnetdevice registers a network device with the channel layer.
* It returns the device structure if successful,if dev=NULL it kmallocs it,
* On device initialisation failure it will kfree it under ALL curcumstances
@@ -148,8 +214,18 @@
void (*unreg_netdevfunc)(struct device *dev));
#endif
-
-
+/* chandev_add & delete model shouldn't normally be needed by drivers except if */
+/* someone is developing a driver which the channel device layer doesn't know about */
+void chandev_add_model(chandev_type chan_type,s32 cu_type,s16 cu_model,
+ s32 dev_type,s16 dev_model,u8 max_port_no,int auto_msck_recovery,
+ u8 default_checksum_received_ip_pkts,u8 default_use_hw_stats);
+void chandev_del_model(s32 cu_type,s16 cu_model,s32 dev_type,s16 dev_model);
+
+/* modules should use chandev_persist to see if they should stay loaded */
+/* this is useful for debugging purposes where you may wish to examine */
+/* /proc/s390dbf/ entries */
+int chandev_persist(chandev_type chan_type);
+#endif /* __S390_CHANDEV_H */
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