X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Flinux%2Fpktcdvd.h;h=721301b0a9087c27a22a48e49e16b795fc975073;hb=HEAD;hp=4b32bce9a2893527195c46321adcf860fe5feed3;hpb=46c271bedd2c8444b1d05bc44928beec0c07debc;p=safe%2Fjmp%2Flinux-2.6

diff --git a/include/linux/pktcdvd.h b/include/linux/pktcdvd.h
index 4b32bce..721301b 100644
--- a/include/linux/pktcdvd.h
+++ b/include/linux/pktcdvd.h
@@ -30,7 +30,7 @@
 
 /*
  * use drive write caching -- we need deferred error handling to be
- * able to sucessfully recover with this option (drive will return good
+ * able to successfully recover with this option (drive will return good
  * status as soon as the cdb is validated).
  */
 #if defined(CONFIG_CDROM_PKTCDVD_WCACHE)
@@ -111,10 +111,18 @@ struct pkt_ctrl_command {
 #include <linux/blkdev.h>
 #include <linux/completion.h>
 #include <linux/cdrom.h>
+#include <linux/kobject.h>
+#include <linux/sysfs.h>
+#include <linux/mempool.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 */
@@ -155,10 +163,8 @@ struct packet_iosched
 	atomic_t		attention;	/* Set to non-zero when queue processing is needed */
 	int			writing;	/* Non-zero when writing, zero when reading */
 	spinlock_t		lock;		/* Protecting read/write queue manipulations */
-	struct bio		*read_queue;
-	struct bio		*read_queue_tail;
-	struct bio		*write_queue;
-	struct bio		*write_queue_tail;
+	struct bio_list		read_queue;
+	struct bio_list		write_queue;
 	sector_t		last_write;	/* The sector where the last write ended */
 	int			successive_reads;
 };
@@ -166,8 +172,11 @@ struct packet_iosched
 /*
  * 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 {
@@ -195,8 +204,8 @@ struct packet_data
 	spinlock_t		lock;		/* Lock protecting state transitions and */
 						/* orig_bios list */
 
-	struct bio		*orig_bios;	/* Original bios passed to pkt_make_request */
-	struct bio		*orig_bios_tail;/* that will be handled by this packet */
+	struct bio_list		orig_bios;	/* Original bios passed to pkt_make_request */
+						/* that will be handled by this packet */
 	int			write_size;	/* Total size of all bios in the orig_bios */
 						/* list, measured in number of frames */
 
@@ -216,7 +225,7 @@ 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 +247,14 @@ 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 +285,16 @@ struct pktcdvd_device
 
 	struct packet_iosched   iosched;
 	struct gendisk		*disk;
+
+	int			write_congestion_off;
+	int			write_congestion_on;
+
+	struct device		*dev;		/* sysfs pktcdvd[0-7] 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__ */