fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / linux / pktcdvd.h

diff --git a/include/linux/pktcdvd.h b/include/linux/pktcdvd.h
index 4e2d2a9..5ea4f05 100644 (file)
--- a/include/linux/pktcdvd.h
+++ b/include/linux/pktcdvd.h
@@ -111,10 +111,17 @@ struct pkt_ctrl_command {
 #include <linux/blkdev.h>
 #include <linux/completion.h>
 #include <linux/cdrom.h>
+#include <linux/kobject.h>
+#include <linux/sysfs.h>
+
+/* default bio write queue congestion marks */
+#define PKT_WRITE_CONGESTION_ON    10000
+#define PKT_WRITE_CONGESTION_OFF   9000
+
 
 struct packet_settings
 {
-       __u8                    size;           /* packet size in (512 byte) sectors */
+       __u32                   size;           /* packet size in (512 byte) sectors */
        __u8                    fp;             /* fixed packets */
        __u8                    link_loss;      /* the rest is specified
                                                 * as per Mt Fuji */
@@ -159,15 +166,18 @@ struct packet_iosched
        struct bio              *read_queue_tail;
        struct bio              *write_queue;
        struct bio              *write_queue_tail;
-       int                     high_prio_read; /* An important read request has been queued */
+       sector_t                last_write;     /* The sector where the last write ended */
        int                     successive_reads;
 };
 
 /*
  * 32 buffers of 2048 bytes
  */
-#define PACKET_MAX_SIZE                32
-#define PAGES_PER_PACKET       (PACKET_MAX_SIZE * CD_FRAMESIZE / PAGE_SIZE)
+#if (PAGE_SIZE % CD_FRAMESIZE) != 0
+#error "PAGE_SIZE must be a multiple of CD_FRAMESIZE"
+#endif
+#define PACKET_MAX_SIZE                128
+#define FRAMES_PER_PAGE                (PAGE_SIZE / CD_FRAMESIZE)
 #define PACKET_MAX_SECTORS     (PACKET_MAX_SIZE * CD_FRAMESIZE >> 9)
 
 enum packet_data_state {
@@ -216,7 +226,7 @@ struct packet_data
        atomic_t                io_errors;      /* Number of read/write errors during IO */
 
        struct bio              *r_bios[PACKET_MAX_SIZE]; /* bios to use during data gathering */
-       struct page             *pages[PAGES_PER_PACKET];
+       struct page             *pages[PACKET_MAX_SIZE / FRAMES_PER_PAGE];
 
        int                     cache_valid;    /* If non-zero, the data for the zone defined */
                                                /* by the sector variable is completely cached */
@@ -238,6 +248,14 @@ struct packet_stacked_data
 };
 #define PSD_POOL_SIZE          64
 
+struct pktcdvd_kobj
+{
+       struct kobject          kobj;
+       struct pktcdvd_device   *pd;
+};
+#define to_pktcdvdkobj(_k) \
+  ((struct pktcdvd_kobj*)container_of(_k,struct pktcdvd_kobj,kobj))
+
 struct pktcdvd_device
 {
        struct block_device     *bdev;          /* dev attached */
@@ -268,6 +286,16 @@ struct pktcdvd_device
 
        struct packet_iosched   iosched;
        struct gendisk          *disk;
+
+       int                     write_congestion_off;
+       int                     write_congestion_on;
+
+       struct class_device     *clsdev;        /* sysfs pktcdvd[0-7] class dev */
+       struct pktcdvd_kobj     *kobj_stat;     /* sysfs pktcdvd[0-7]/stat/     */
+       struct pktcdvd_kobj     *kobj_wqueue;   /* sysfs pktcdvd[0-7]/write_queue/ */
+
+       struct dentry           *dfs_d_root;    /* debugfs: devname directory */
+       struct dentry           *dfs_f_info;    /* debugfs: info file */
 };
 
 #endif /* __KERNEL__ */