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drivers/block/swim3.c
31.5 KB
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/* * Driver for the SWIM3 (Super Woz Integrated Machine 3) * floppy controller found on Power Macintoshes. * * Copyright (C) 1996 Paul Mackerras. * * 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. */ /* * TODO: * handle 2 drives * handle GCR disks */ |
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#undef DEBUG |
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#include <linux/stddef.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/timer.h> #include <linux/delay.h> #include <linux/fd.h> #include <linux/ioctl.h> #include <linux/blkdev.h> |
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#include <linux/interrupt.h> |
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#include <linux/mutex.h> |
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#include <linux/module.h> |
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#include <linux/spinlock.h> |
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#include <asm/io.h> #include <asm/dbdma.h> #include <asm/prom.h> #include <asm/uaccess.h> #include <asm/mediabay.h> #include <asm/machdep.h> #include <asm/pmac_feature.h> |
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#define MAX_FLOPPIES 2 |
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static DEFINE_MUTEX(swim3_mutex); static struct gendisk *disks[MAX_FLOPPIES]; |
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enum swim_state { idle, locating, seeking, settling, do_transfer, jogging, available, revalidating, ejecting }; #define REG(x) unsigned char x; char x ## _pad[15]; /* * The names for these registers mostly represent speculation on my part. * It will be interesting to see how close they are to the names Apple uses. */ struct swim3 { REG(data); REG(timer); /* counts down at 1MHz */ REG(error); REG(mode); REG(select); /* controls CA0, CA1, CA2 and LSTRB signals */ REG(setup); REG(control); /* writing bits clears them */ REG(status); /* writing bits sets them in control */ REG(intr); REG(nseek); /* # tracks to seek */ REG(ctrack); /* current track number */ REG(csect); /* current sector number */ REG(gap3); /* size of gap 3 in track format */ REG(sector); /* sector # to read or write */ REG(nsect); /* # sectors to read or write */ REG(intr_enable); }; #define control_bic control #define control_bis status /* Bits in select register */ #define CA_MASK 7 #define LSTRB 8 /* Bits in control register */ #define DO_SEEK 0x80 #define FORMAT 0x40 #define SELECT 0x20 #define WRITE_SECTORS 0x10 #define DO_ACTION 0x08 #define DRIVE2_ENABLE 0x04 #define DRIVE_ENABLE 0x02 #define INTR_ENABLE 0x01 /* Bits in status register */ #define FIFO_1BYTE 0x80 #define FIFO_2BYTE 0x40 #define ERROR 0x20 #define DATA 0x08 #define RDDATA 0x04 #define INTR_PENDING 0x02 #define MARK_BYTE 0x01 /* Bits in intr and intr_enable registers */ #define ERROR_INTR 0x20 #define DATA_CHANGED 0x10 #define TRANSFER_DONE 0x08 #define SEEN_SECTOR 0x04 #define SEEK_DONE 0x02 #define TIMER_DONE 0x01 /* Bits in error register */ #define ERR_DATA_CRC 0x80 #define ERR_ADDR_CRC 0x40 #define ERR_OVERRUN 0x04 #define ERR_UNDERRUN 0x01 /* Bits in setup register */ #define S_SW_RESET 0x80 #define S_GCR_WRITE 0x40 #define S_IBM_DRIVE 0x20 #define S_TEST_MODE 0x10 #define S_FCLK_DIV2 0x08 #define S_GCR 0x04 #define S_COPY_PROT 0x02 #define S_INV_WDATA 0x01 /* Select values for swim3_action */ #define SEEK_POSITIVE 0 #define SEEK_NEGATIVE 4 #define STEP 1 #define MOTOR_ON 2 #define MOTOR_OFF 6 #define INDEX 3 #define EJECT 7 #define SETMFM 9 #define SETGCR 13 /* Select values for swim3_select and swim3_readbit */ #define STEP_DIR 0 #define STEPPING 1 #define MOTOR_ON 2 #define RELAX 3 /* also eject in progress */ #define READ_DATA_0 4 #define TWOMEG_DRIVE 5 #define SINGLE_SIDED 6 /* drive or diskette is 4MB type? */ #define DRIVE_PRESENT 7 #define DISK_IN 8 #define WRITE_PROT 9 #define TRACK_ZERO 10 #define TACHO 11 #define READ_DATA_1 12 #define MFM_MODE 13 #define SEEK_COMPLETE 14 #define ONEMEG_MEDIA 15 /* Definitions of values used in writing and formatting */ #define DATA_ESCAPE 0x99 #define GCR_SYNC_EXC 0x3f #define GCR_SYNC_CONV 0x80 #define GCR_FIRST_MARK 0xd5 #define GCR_SECOND_MARK 0xaa #define GCR_ADDR_MARK "\xd5\xaa\x00" #define GCR_DATA_MARK "\xd5\xaa\x0b" #define GCR_SLIP_BYTE "\x27\xaa" #define GCR_SELF_SYNC "\x3f\xbf\x1e\x34\x3c\x3f" #define DATA_99 "\x99\x99" #define MFM_ADDR_MARK "\x99\xa1\x99\xa1\x99\xa1\x99\xfe" #define MFM_INDEX_MARK "\x99\xc2\x99\xc2\x99\xc2\x99\xfc" #define MFM_GAP_LEN 12 struct floppy_state { enum swim_state state; struct swim3 __iomem *swim3; /* hardware registers */ struct dbdma_regs __iomem *dma; /* DMA controller registers */ int swim3_intr; /* interrupt number for SWIM3 */ int dma_intr; /* interrupt number for DMA channel */ int cur_cyl; /* cylinder head is on, or -1 */ int cur_sector; /* last sector we saw go past */ int req_cyl; /* the cylinder for the current r/w request */ int head; /* head number ditto */ int req_sector; /* sector number ditto */ int scount; /* # sectors we're transferring at present */ int retries; int settle_time; int secpercyl; /* disk geometry information */ int secpertrack; int total_secs; int write_prot; /* 1 if write-protected, 0 if not, -1 dunno */ struct dbdma_cmd *dma_cmd; int ref_count; int expect_cyl; struct timer_list timeout; int timeout_pending; int ejected; wait_queue_head_t wait; int wanted; |
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struct macio_dev *mdev; |
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char dbdma_cmd_space[5 * sizeof(struct dbdma_cmd)]; |
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int index; struct request *cur_req; |
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}; |
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#define swim3_err(fmt, arg...) dev_err(&fs->mdev->ofdev.dev, "[fd%d] " fmt, fs->index, arg) #define swim3_warn(fmt, arg...) dev_warn(&fs->mdev->ofdev.dev, "[fd%d] " fmt, fs->index, arg) #define swim3_info(fmt, arg...) dev_info(&fs->mdev->ofdev.dev, "[fd%d] " fmt, fs->index, arg) #ifdef DEBUG #define swim3_dbg(fmt, arg...) dev_dbg(&fs->mdev->ofdev.dev, "[fd%d] " fmt, fs->index, arg) #else #define swim3_dbg(fmt, arg...) do { } while(0) #endif |
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static struct floppy_state floppy_states[MAX_FLOPPIES]; static int floppy_count = 0; static DEFINE_SPINLOCK(swim3_lock); static unsigned short write_preamble[] = { 0x4e4e, 0x4e4e, 0x4e4e, 0x4e4e, 0x4e4e, /* gap field */ 0, 0, 0, 0, 0, 0, /* sync field */ 0x99a1, 0x99a1, 0x99a1, 0x99fb, /* data address mark */ 0x990f /* no escape for 512 bytes */ }; static unsigned short write_postamble[] = { 0x9904, /* insert CRC */ 0x4e4e, 0x4e4e, 0x9908, /* stop writing */ 0, 0, 0, 0, 0, 0 }; |
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static void seek_track(struct floppy_state *fs, int n); static void init_dma(struct dbdma_cmd *cp, int cmd, void *buf, int count); |
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static void act(struct floppy_state *fs); static void scan_timeout(unsigned long data); static void seek_timeout(unsigned long data); static void settle_timeout(unsigned long data); static void xfer_timeout(unsigned long data); |
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static irqreturn_t swim3_interrupt(int irq, void *dev_id); /*static void fd_dma_interrupt(int irq, void *dev_id);*/ |
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static int grab_drive(struct floppy_state *fs, enum swim_state state, int interruptible); static void release_drive(struct floppy_state *fs); static int fd_eject(struct floppy_state *fs); |
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static int floppy_ioctl(struct block_device *bdev, fmode_t mode, |
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unsigned int cmd, unsigned long param); |
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static int floppy_open(struct block_device *bdev, fmode_t mode); static int floppy_release(struct gendisk *disk, fmode_t mode); |
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static unsigned int floppy_check_events(struct gendisk *disk, unsigned int clearing); |
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static int floppy_revalidate(struct gendisk *disk); |
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|
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static bool swim3_end_request(struct floppy_state *fs, int err, unsigned int nr_bytes) |
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{ |
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struct request *req = fs->cur_req; int rc; |
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|
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swim3_dbg(" end request, err=%d nr_bytes=%d, cur_req=%p ", err, nr_bytes, req); |
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if (err) nr_bytes = blk_rq_cur_bytes(req); rc = __blk_end_request(req, err, nr_bytes); if (rc) return true; fs->cur_req = NULL; return false; |
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} |
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static void swim3_select(struct floppy_state *fs, int sel) { struct swim3 __iomem *sw = fs->swim3; out_8(&sw->select, RELAX); if (sel & 8) out_8(&sw->control_bis, SELECT); else out_8(&sw->control_bic, SELECT); out_8(&sw->select, sel & CA_MASK); } static void swim3_action(struct floppy_state *fs, int action) { struct swim3 __iomem *sw = fs->swim3; swim3_select(fs, action); udelay(1); out_8(&sw->select, sw->select | LSTRB); udelay(2); out_8(&sw->select, sw->select & ~LSTRB); udelay(1); } static int swim3_readbit(struct floppy_state *fs, int bit) { struct swim3 __iomem *sw = fs->swim3; int stat; swim3_select(fs, bit); udelay(1); stat = in_8(&sw->status); return (stat & DATA) == 0; } |
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static void start_request(struct floppy_state *fs) { struct request *req; unsigned long x; |
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swim3_dbg("start request, initial state=%d ", fs->state); |
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if (fs->state == idle && fs->wanted) { fs->state = available; wake_up(&fs->wait); return; } |
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while (fs->state == idle) { |
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swim3_dbg("start request, idle loop, cur_req=%p ", fs->cur_req); if (!fs->cur_req) { fs->cur_req = blk_fetch_request(disks[fs->index]->queue); swim3_dbg(" fetched request %p ", fs->cur_req); if (!fs->cur_req) |
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break; |
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} |
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req = fs->cur_req; if (fs->mdev->media_bay && check_media_bay(fs->mdev->media_bay) != MB_FD) { swim3_dbg("%s", " media bay absent, dropping req "); swim3_end_request(fs, -ENODEV, 0); continue; } #if 0 /* This is really too verbose */ swim3_dbg("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%u buf=%p ", req->rq_disk->disk_name, req->cmd, (long)blk_rq_pos(req), blk_rq_sectors(req), req->buffer); swim3_dbg(" errors=%d current_nr_sectors=%u ", req->errors, blk_rq_cur_sectors(req)); |
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#endif |
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if (blk_rq_pos(req) >= fs->total_secs) { |
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swim3_dbg(" pos out of bounds (%ld, max is %ld) ", (long)blk_rq_pos(req), (long)fs->total_secs); swim3_end_request(fs, -EIO, 0); |
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continue; } |
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if (fs->ejected) { |
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swim3_dbg("%s", " disk ejected "); swim3_end_request(fs, -EIO, 0); |
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continue; } if (rq_data_dir(req) == WRITE) { if (fs->write_prot < 0) fs->write_prot = swim3_readbit(fs, WRITE_PROT); if (fs->write_prot) { |
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swim3_dbg("%s", " try to write, disk write protected "); swim3_end_request(fs, -EIO, 0); |
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continue; } } |
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/* Do not remove the cast. blk_rq_pos(req) is now a * sector_t and can be 64 bits, but it will never go * past 32 bits for this driver anyway, so we can * safely cast it down and not have to do a 64/32 * division |
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*/ |
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fs->req_cyl = ((long)blk_rq_pos(req)) / fs->secpercyl; x = ((long)blk_rq_pos(req)) % fs->secpercyl; |
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fs->head = x / fs->secpertrack; fs->req_sector = x % fs->secpertrack + 1; |
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fs->state = do_transfer; fs->retries = 0; act(fs); } } |
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static void do_fd_request(struct request_queue * q) { start_request(q->queuedata); } |
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static void set_timeout(struct floppy_state *fs, int nticks, void (*proc)(unsigned long)) { |
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if (fs->timeout_pending) del_timer(&fs->timeout); fs->timeout.expires = jiffies + nticks; fs->timeout.function = proc; fs->timeout.data = (unsigned long) fs; add_timer(&fs->timeout); fs->timeout_pending = 1; |
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} static inline void scan_track(struct floppy_state *fs) { struct swim3 __iomem *sw = fs->swim3; swim3_select(fs, READ_DATA_0); in_8(&sw->intr); /* clear SEEN_SECTOR bit */ in_8(&sw->error); out_8(&sw->intr_enable, SEEN_SECTOR); out_8(&sw->control_bis, DO_ACTION); /* enable intr when track found */ set_timeout(fs, HZ, scan_timeout); /* enable timeout */ } static inline void seek_track(struct floppy_state *fs, int n) { struct swim3 __iomem *sw = fs->swim3; if (n >= 0) { swim3_action(fs, SEEK_POSITIVE); sw->nseek = n; } else { swim3_action(fs, SEEK_NEGATIVE); sw->nseek = -n; } fs->expect_cyl = (fs->cur_cyl >= 0)? fs->cur_cyl + n: -1; swim3_select(fs, STEP); in_8(&sw->error); /* enable intr when seek finished */ out_8(&sw->intr_enable, SEEK_DONE); out_8(&sw->control_bis, DO_SEEK); set_timeout(fs, 3*HZ, seek_timeout); /* enable timeout */ fs->settle_time = 0; } static inline void init_dma(struct dbdma_cmd *cp, int cmd, void *buf, int count) { st_le16(&cp->req_count, count); st_le16(&cp->command, cmd); st_le32(&cp->phy_addr, virt_to_bus(buf)); cp->xfer_status = 0; } static inline void setup_transfer(struct floppy_state *fs) { int n; struct swim3 __iomem *sw = fs->swim3; struct dbdma_cmd *cp = fs->dma_cmd; struct dbdma_regs __iomem *dr = fs->dma; |
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struct request *req = fs->cur_req; |
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|
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if (blk_rq_cur_sectors(req) <= 0) { swim3_warn("%s", "Transfer 0 sectors ? "); |
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return; } |
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if (rq_data_dir(req) == WRITE) |
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n = 1; else { n = fs->secpertrack - fs->req_sector + 1; |
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if (n > blk_rq_cur_sectors(req)) n = blk_rq_cur_sectors(req); |
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} |
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swim3_dbg(" setup xfer at sect %d (of %d) head %d for %d ", fs->req_sector, fs->secpertrack, fs->head, n); |
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fs->scount = n; swim3_select(fs, fs->head? READ_DATA_1: READ_DATA_0); out_8(&sw->sector, fs->req_sector); out_8(&sw->nsect, n); out_8(&sw->gap3, 0); out_le32(&dr->cmdptr, virt_to_bus(cp)); |
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if (rq_data_dir(req) == WRITE) { |
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/* Set up 3 dma commands: write preamble, data, postamble */ init_dma(cp, OUTPUT_MORE, write_preamble, sizeof(write_preamble)); ++cp; |
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init_dma(cp, OUTPUT_MORE, req->buffer, 512); |
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++cp; init_dma(cp, OUTPUT_LAST, write_postamble, sizeof(write_postamble)); } else { |
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init_dma(cp, INPUT_LAST, req->buffer, n * 512); |
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} ++cp; out_le16(&cp->command, DBDMA_STOP); out_8(&sw->control_bic, DO_ACTION | WRITE_SECTORS); in_8(&sw->error); out_8(&sw->control_bic, DO_ACTION | WRITE_SECTORS); |
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if (rq_data_dir(req) == WRITE) |
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out_8(&sw->control_bis, WRITE_SECTORS); in_8(&sw->intr); out_le32(&dr->control, (RUN << 16) | RUN); /* enable intr when transfer complete */ out_8(&sw->intr_enable, TRANSFER_DONE); out_8(&sw->control_bis, DO_ACTION); set_timeout(fs, 2*HZ, xfer_timeout); /* enable timeout */ } static void act(struct floppy_state *fs) { for (;;) { |
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swim3_dbg(" act loop, state=%d, req_cyl=%d, cur_cyl=%d ", fs->state, fs->req_cyl, fs->cur_cyl); |
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switch (fs->state) { case idle: return; /* XXX shouldn't get here */ case locating: if (swim3_readbit(fs, TRACK_ZERO)) { |
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swim3_dbg("%s", " locate track 0 "); |
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fs->cur_cyl = 0; if (fs->req_cyl == 0) fs->state = do_transfer; else fs->state = seeking; break; } scan_track(fs); return; case seeking: if (fs->cur_cyl < 0) { fs->expect_cyl = -1; fs->state = locating; break; } if (fs->req_cyl == fs->cur_cyl) { |
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swim3_warn("%s", "Whoops, seeking 0 "); |
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fs->state = do_transfer; break; } seek_track(fs, fs->req_cyl - fs->cur_cyl); return; case settling: /* check for SEEK_COMPLETE after 30ms */ fs->settle_time = (HZ + 32) / 33; set_timeout(fs, fs->settle_time, settle_timeout); return; case do_transfer: if (fs->cur_cyl != fs->req_cyl) { if (fs->retries > 5) { |
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swim3_err("Wrong cylinder in transfer, want: %d got %d ", fs->req_cyl, fs->cur_cyl); swim3_end_request(fs, -EIO, 0); |
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fs->state = idle; return; } fs->state = seeking; break; } setup_transfer(fs); return; case jogging: seek_track(fs, -5); return; default: |
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swim3_err("Unknown state %d ", fs->state); |
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return; } } } static void scan_timeout(unsigned long data) { struct floppy_state *fs = (struct floppy_state *) data; struct swim3 __iomem *sw = fs->swim3; |
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unsigned long flags; swim3_dbg("* scan timeout, state=%d ", fs->state); |
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spin_lock_irqsave(&swim3_lock, flags); |
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fs->timeout_pending = 0; out_8(&sw->control_bic, DO_ACTION | WRITE_SECTORS); out_8(&sw->select, RELAX); out_8(&sw->intr_enable, 0); fs->cur_cyl = -1; if (fs->retries > 5) { |
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swim3_end_request(fs, -EIO, 0); |
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fs->state = idle; start_request(fs); } else { fs->state = jogging; act(fs); } |
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spin_unlock_irqrestore(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
594 595 596 597 598 599 |
} static void seek_timeout(unsigned long data) { struct floppy_state *fs = (struct floppy_state *) data; struct swim3 __iomem *sw = fs->swim3; |
b30254574 block/swim3: Lock... |
600 601 602 603 |
unsigned long flags; swim3_dbg("* seek timeout, state=%d ", fs->state); |
1da177e4c Linux-2.6.12-rc2 |
604 |
|
b30254574 block/swim3: Lock... |
605 |
spin_lock_irqsave(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
606 607 608 609 |
fs->timeout_pending = 0; out_8(&sw->control_bic, DO_SEEK); out_8(&sw->select, RELAX); out_8(&sw->intr_enable, 0); |
b30254574 block/swim3: Lock... |
610 611 612 |
swim3_err("%s", "Seek timeout "); swim3_end_request(fs, -EIO, 0); |
1da177e4c Linux-2.6.12-rc2 |
613 614 |
fs->state = idle; start_request(fs); |
b30254574 block/swim3: Lock... |
615 |
spin_unlock_irqrestore(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
616 617 618 619 620 621 |
} static void settle_timeout(unsigned long data) { struct floppy_state *fs = (struct floppy_state *) data; struct swim3 __iomem *sw = fs->swim3; |
b30254574 block/swim3: Lock... |
622 623 624 625 |
unsigned long flags; swim3_dbg("* settle timeout, state=%d ", fs->state); |
1da177e4c Linux-2.6.12-rc2 |
626 |
|
b30254574 block/swim3: Lock... |
627 |
spin_lock_irqsave(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
628 629 630 631 632 |
fs->timeout_pending = 0; if (swim3_readbit(fs, SEEK_COMPLETE)) { out_8(&sw->select, RELAX); fs->state = locating; act(fs); |
b30254574 block/swim3: Lock... |
633 |
goto unlock; |
1da177e4c Linux-2.6.12-rc2 |
634 635 636 637 638 |
} out_8(&sw->select, RELAX); if (fs->settle_time < 2*HZ) { ++fs->settle_time; set_timeout(fs, 1, settle_timeout); |
b30254574 block/swim3: Lock... |
639 |
goto unlock; |
1da177e4c Linux-2.6.12-rc2 |
640 |
} |
b30254574 block/swim3: Lock... |
641 642 643 |
swim3_err("%s", "Seek settle timeout "); swim3_end_request(fs, -EIO, 0); |
1da177e4c Linux-2.6.12-rc2 |
644 645 |
fs->state = idle; start_request(fs); |
b30254574 block/swim3: Lock... |
646 647 |
unlock: spin_unlock_irqrestore(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
648 649 650 651 652 653 654 |
} static void xfer_timeout(unsigned long data) { struct floppy_state *fs = (struct floppy_state *) data; struct swim3 __iomem *sw = fs->swim3; struct dbdma_regs __iomem *dr = fs->dma; |
b30254574 block/swim3: Lock... |
655 |
unsigned long flags; |
1da177e4c Linux-2.6.12-rc2 |
656 |
int n; |
b30254574 block/swim3: Lock... |
657 658 659 660 |
swim3_dbg("* xfer timeout, state=%d ", fs->state); spin_lock_irqsave(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
661 662 663 664 665 666 667 668 |
fs->timeout_pending = 0; out_le32(&dr->control, RUN << 16); /* We must wait a bit for dbdma to stop */ for (n = 0; (in_le32(&dr->status) & ACTIVE) && n < 1000; n++) udelay(1); out_8(&sw->intr_enable, 0); out_8(&sw->control_bic, WRITE_SECTORS | DO_ACTION); out_8(&sw->select, RELAX); |
b30254574 block/swim3: Lock... |
669 670 671 672 673 |
swim3_err("Timeout %sing sector %ld ", (rq_data_dir(fs->cur_req)==WRITE? "writ": "read"), (long)blk_rq_pos(fs->cur_req)); swim3_end_request(fs, -EIO, 0); |
1da177e4c Linux-2.6.12-rc2 |
674 675 |
fs->state = idle; start_request(fs); |
b30254574 block/swim3: Lock... |
676 |
spin_unlock_irqrestore(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
677 |
} |
7d12e780e IRQ: Maintain reg... |
678 |
static irqreturn_t swim3_interrupt(int irq, void *dev_id) |
1da177e4c Linux-2.6.12-rc2 |
679 680 681 682 683 684 685 |
{ struct floppy_state *fs = (struct floppy_state *) dev_id; struct swim3 __iomem *sw = fs->swim3; int intr, err, n; int stat, resid; struct dbdma_regs __iomem *dr; struct dbdma_cmd *cp; |
b30254574 block/swim3: Lock... |
686 687 688 689 690 |
unsigned long flags; struct request *req = fs->cur_req; swim3_dbg("* interrupt, state=%d ", fs->state); |
1da177e4c Linux-2.6.12-rc2 |
691 |
|
b30254574 block/swim3: Lock... |
692 |
spin_lock_irqsave(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
693 694 695 |
intr = in_8(&sw->intr); err = (intr & ERROR_INTR)? in_8(&sw->error): 0; if ((intr & ERROR_INTR) && fs->state != do_transfer) |
b30254574 block/swim3: Lock... |
696 697 698 |
swim3_err("Non-transfer error interrupt: state=%d, dir=%x, intr=%x, err=%x ", fs->state, rq_data_dir(req), intr, err); |
1da177e4c Linux-2.6.12-rc2 |
699 700 701 702 703 704 705 706 707 |
switch (fs->state) { case locating: if (intr & SEEN_SECTOR) { out_8(&sw->control_bic, DO_ACTION | WRITE_SECTORS); out_8(&sw->select, RELAX); out_8(&sw->intr_enable, 0); del_timer(&fs->timeout); fs->timeout_pending = 0; if (sw->ctrack == 0xff) { |
b30254574 block/swim3: Lock... |
708 709 |
swim3_err("%s", "Seen sector but cyl=ff? "); |
1da177e4c Linux-2.6.12-rc2 |
710 711 |
fs->cur_cyl = -1; if (fs->retries > 5) { |
b30254574 block/swim3: Lock... |
712 |
swim3_end_request(fs, -EIO, 0); |
1da177e4c Linux-2.6.12-rc2 |
713 714 715 716 717 718 719 720 721 722 723 |
fs->state = idle; start_request(fs); } else { fs->state = jogging; act(fs); } break; } fs->cur_cyl = sw->ctrack; fs->cur_sector = sw->csect; if (fs->expect_cyl != -1 && fs->expect_cyl != fs->cur_cyl) |
b30254574 block/swim3: Lock... |
724 725 726 |
swim3_err("Expected cyl %d, got %d ", fs->expect_cyl, fs->cur_cyl); |
1da177e4c Linux-2.6.12-rc2 |
727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 |
fs->state = do_transfer; act(fs); } break; case seeking: case jogging: if (sw->nseek == 0) { out_8(&sw->control_bic, DO_SEEK); out_8(&sw->select, RELAX); out_8(&sw->intr_enable, 0); del_timer(&fs->timeout); fs->timeout_pending = 0; if (fs->state == seeking) ++fs->retries; fs->state = settling; act(fs); } break; case settling: out_8(&sw->intr_enable, 0); del_timer(&fs->timeout); fs->timeout_pending = 0; act(fs); break; case do_transfer: if ((intr & (ERROR_INTR | TRANSFER_DONE)) == 0) break; out_8(&sw->intr_enable, 0); out_8(&sw->control_bic, WRITE_SECTORS | DO_ACTION); out_8(&sw->select, RELAX); del_timer(&fs->timeout); fs->timeout_pending = 0; dr = fs->dma; cp = fs->dma_cmd; |
b30254574 block/swim3: Lock... |
761 |
if (rq_data_dir(req) == WRITE) |
1da177e4c Linux-2.6.12-rc2 |
762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 |
++cp; /* * Check that the main data transfer has finished. * On writing, the swim3 sometimes doesn't use * up all the bytes of the postamble, so we can still * see DMA active here. That doesn't matter as long * as all the sector data has been transferred. */ if ((intr & ERROR_INTR) == 0 && cp->xfer_status == 0) { /* wait a little while for DMA to complete */ for (n = 0; n < 100; ++n) { if (cp->xfer_status != 0) break; udelay(1); barrier(); } } /* turn off DMA */ out_le32(&dr->control, (RUN | PAUSE) << 16); stat = ld_le16(&cp->xfer_status); resid = ld_le16(&cp->res_count); if (intr & ERROR_INTR) { n = fs->scount - 1 - resid / 512; if (n > 0) { |
b30254574 block/swim3: Lock... |
786 |
blk_update_request(req, 0, n << 9); |
1da177e4c Linux-2.6.12-rc2 |
787 788 789 790 791 792 |
fs->req_sector += n; } if (fs->retries < 5) { ++fs->retries; act(fs); } else { |
b30254574 block/swim3: Lock... |
793 794 795 796 797 |
swim3_err("Error %sing block %ld (err=%x) ", rq_data_dir(req) == WRITE? "writ": "read", (long)blk_rq_pos(req), err); swim3_end_request(fs, -EIO, 0); |
1da177e4c Linux-2.6.12-rc2 |
798 799 800 801 802 |
fs->state = idle; } } else { if ((stat & ACTIVE) == 0 || resid != 0) { /* musta been an error */ |
b30254574 block/swim3: Lock... |
803 804 805 806 807 808 |
swim3_err("fd dma error: stat=%x resid=%d ", stat, resid); swim3_err(" state=%d, dir=%x, intr=%x, err=%x ", fs->state, rq_data_dir(req), intr, err); swim3_end_request(fs, -EIO, 0); |
1da177e4c Linux-2.6.12-rc2 |
809 810 811 812 |
fs->state = idle; start_request(fs); break; } |
b30254574 block/swim3: Lock... |
813 814 |
fs->retries = 0; if (swim3_end_request(fs, 0, fs->scount << 9)) { |
1da177e4c Linux-2.6.12-rc2 |
815 816 817 818 819 820 821 822 823 |
fs->req_sector += fs->scount; if (fs->req_sector > fs->secpertrack) { fs->req_sector -= fs->secpertrack; if (++fs->head > 1) { fs->head = 0; ++fs->req_cyl; } } act(fs); |
467ca759f swim3: clean up r... |
824 825 |
} else fs->state = idle; |
1da177e4c Linux-2.6.12-rc2 |
826 827 828 829 830 |
} if (fs->state == idle) start_request(fs); break; default: |
b30254574 block/swim3: Lock... |
831 832 |
swim3_err("Don't know what to do in state %d ", fs->state); |
1da177e4c Linux-2.6.12-rc2 |
833 |
} |
b30254574 block/swim3: Lock... |
834 |
spin_unlock_irqrestore(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
835 836 837 838 |
return IRQ_HANDLED; } /* |
7d12e780e IRQ: Maintain reg... |
839 |
static void fd_dma_interrupt(int irq, void *dev_id) |
1da177e4c Linux-2.6.12-rc2 |
840 841 842 |
{ } */ |
b30254574 block/swim3: Lock... |
843 |
/* Called under the mutex to grab exclusive access to a drive */ |
1da177e4c Linux-2.6.12-rc2 |
844 845 846 847 |
static int grab_drive(struct floppy_state *fs, enum swim_state state, int interruptible) { unsigned long flags; |
b30254574 block/swim3: Lock... |
848 849 850 851 852 |
swim3_dbg("%s", "-> grab drive "); spin_lock_irqsave(&swim3_lock, flags); if (fs->state != idle && fs->state != available) { |
1da177e4c Linux-2.6.12-rc2 |
853 854 |
++fs->wanted; while (fs->state != available) { |
b30254574 block/swim3: Lock... |
855 |
spin_unlock_irqrestore(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
856 857 |
if (interruptible && signal_pending(current)) { --fs->wanted; |
1da177e4c Linux-2.6.12-rc2 |
858 859 860 |
return -EINTR; } interruptible_sleep_on(&fs->wait); |
b30254574 block/swim3: Lock... |
861 |
spin_lock_irqsave(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
862 863 864 865 |
} --fs->wanted; } fs->state = state; |
b30254574 block/swim3: Lock... |
866 |
spin_unlock_irqrestore(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
867 868 869 870 871 872 |
return 0; } static void release_drive(struct floppy_state *fs) { unsigned long flags; |
b30254574 block/swim3: Lock... |
873 874 875 876 |
swim3_dbg("%s", "-> release drive "); spin_lock_irqsave(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
877 878 |
fs->state = idle; start_request(fs); |
b30254574 block/swim3: Lock... |
879 |
spin_unlock_irqrestore(&swim3_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 |
} static int fd_eject(struct floppy_state *fs) { int err, n; err = grab_drive(fs, ejecting, 1); if (err) return err; swim3_action(fs, EJECT); for (n = 20; n > 0; --n) { if (signal_pending(current)) { err = -EINTR; break; } swim3_select(fs, RELAX); |
86e848624 [PATCH] drivers/b... |
896 |
schedule_timeout_interruptible(1); |
1da177e4c Linux-2.6.12-rc2 |
897 898 899 900 901 902 903 904 905 906 907 908 |
if (swim3_readbit(fs, DISK_IN) == 0) break; } swim3_select(fs, RELAX); udelay(150); fs->ejected = 1; release_drive(fs); return err; } static struct floppy_struct floppy_type = { 2880,18,2,80,0,0x1B,0x00,0xCF,0x6C,NULL }; /* 7 1.44MB 3.5" */ |
8a6cfeb6d block: push down ... |
909 |
static int floppy_locked_ioctl(struct block_device *bdev, fmode_t mode, |
1da177e4c Linux-2.6.12-rc2 |
910 911 |
unsigned int cmd, unsigned long param) { |
b4d9a4425 [PATCH] switch swim3 |
912 |
struct floppy_state *fs = bdev->bd_disk->private_data; |
1da177e4c Linux-2.6.12-rc2 |
913 914 915 916 |
int err; if ((cmd & 0x80) && !capable(CAP_SYS_ADMIN)) return -EPERM; |
d58b0c39e powerpc/macio: Re... |
917 918 |
if (fs->mdev->media_bay && check_media_bay(fs->mdev->media_bay) != MB_FD) |
1da177e4c Linux-2.6.12-rc2 |
919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 |
return -ENXIO; switch (cmd) { case FDEJECT: if (fs->ref_count != 1) return -EBUSY; err = fd_eject(fs); return err; case FDGETPRM: if (copy_to_user((void __user *) param, &floppy_type, sizeof(struct floppy_struct))) return -EFAULT; return 0; } return -ENOTTY; } |
8a6cfeb6d block: push down ... |
935 936 937 938 |
static int floppy_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long param) { int ret; |
2a48fc0ab block: autoconver... |
939 |
mutex_lock(&swim3_mutex); |
8a6cfeb6d block: push down ... |
940 |
ret = floppy_locked_ioctl(bdev, mode, cmd, param); |
2a48fc0ab block: autoconver... |
941 |
mutex_unlock(&swim3_mutex); |
8a6cfeb6d block: push down ... |
942 943 944 |
return ret; } |
b4d9a4425 [PATCH] switch swim3 |
945 |
static int floppy_open(struct block_device *bdev, fmode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
946 |
{ |
b4d9a4425 [PATCH] switch swim3 |
947 |
struct floppy_state *fs = bdev->bd_disk->private_data; |
1da177e4c Linux-2.6.12-rc2 |
948 949 950 951 |
struct swim3 __iomem *sw = fs->swim3; int n, err = 0; if (fs->ref_count == 0) { |
d58b0c39e powerpc/macio: Re... |
952 953 |
if (fs->mdev->media_bay && check_media_bay(fs->mdev->media_bay) != MB_FD) |
1da177e4c Linux-2.6.12-rc2 |
954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 |
return -ENXIO; out_8(&sw->setup, S_IBM_DRIVE | S_FCLK_DIV2); out_8(&sw->control_bic, 0xff); out_8(&sw->mode, 0x95); udelay(10); out_8(&sw->intr_enable, 0); out_8(&sw->control_bis, DRIVE_ENABLE | INTR_ENABLE); swim3_action(fs, MOTOR_ON); fs->write_prot = -1; fs->cur_cyl = -1; for (n = 0; n < 2 * HZ; ++n) { if (n >= HZ/30 && swim3_readbit(fs, SEEK_COMPLETE)) break; if (signal_pending(current)) { err = -EINTR; break; } swim3_select(fs, RELAX); |
86e848624 [PATCH] drivers/b... |
972 |
schedule_timeout_interruptible(1); |
1da177e4c Linux-2.6.12-rc2 |
973 974 975 976 977 978 |
} if (err == 0 && (swim3_readbit(fs, SEEK_COMPLETE) == 0 || swim3_readbit(fs, DISK_IN) == 0)) err = -ENXIO; swim3_action(fs, SETMFM); swim3_select(fs, RELAX); |
b4d9a4425 [PATCH] switch swim3 |
979 |
} else if (fs->ref_count == -1 || mode & FMODE_EXCL) |
1da177e4c Linux-2.6.12-rc2 |
980 |
return -EBUSY; |
b4d9a4425 [PATCH] switch swim3 |
981 982 983 |
if (err == 0 && (mode & FMODE_NDELAY) == 0 && (mode & (FMODE_READ|FMODE_WRITE))) { check_disk_change(bdev); |
1da177e4c Linux-2.6.12-rc2 |
984 985 986 |
if (fs->ejected) err = -ENXIO; } |
b4d9a4425 [PATCH] switch swim3 |
987 |
if (err == 0 && (mode & FMODE_WRITE)) { |
1da177e4c Linux-2.6.12-rc2 |
988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 |
if (fs->write_prot < 0) fs->write_prot = swim3_readbit(fs, WRITE_PROT); if (fs->write_prot) err = -EROFS; } if (err) { if (fs->ref_count == 0) { swim3_action(fs, MOTOR_OFF); out_8(&sw->control_bic, DRIVE_ENABLE | INTR_ENABLE); swim3_select(fs, RELAX); } return err; } |
b4d9a4425 [PATCH] switch swim3 |
1002 |
if (mode & FMODE_EXCL) |
1da177e4c Linux-2.6.12-rc2 |
1003 1004 1005 1006 1007 1008 |
fs->ref_count = -1; else ++fs->ref_count; return 0; } |
6e9624b8c block: push down ... |
1009 1010 1011 |
static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode) { int ret; |
2a48fc0ab block: autoconver... |
1012 |
mutex_lock(&swim3_mutex); |
6e9624b8c block: push down ... |
1013 |
ret = floppy_open(bdev, mode); |
2a48fc0ab block: autoconver... |
1014 |
mutex_unlock(&swim3_mutex); |
6e9624b8c block: push down ... |
1015 1016 1017 |
return ret; } |
b4d9a4425 [PATCH] switch swim3 |
1018 |
static int floppy_release(struct gendisk *disk, fmode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
1019 |
{ |
b4d9a4425 [PATCH] switch swim3 |
1020 |
struct floppy_state *fs = disk->private_data; |
1da177e4c Linux-2.6.12-rc2 |
1021 |
struct swim3 __iomem *sw = fs->swim3; |
b30254574 block/swim3: Lock... |
1022 |
|
2a48fc0ab block: autoconver... |
1023 |
mutex_lock(&swim3_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1024 1025 1026 1027 1028 |
if (fs->ref_count > 0 && --fs->ref_count == 0) { swim3_action(fs, MOTOR_OFF); out_8(&sw->control_bic, 0xff); swim3_select(fs, RELAX); } |
2a48fc0ab block: autoconver... |
1029 |
mutex_unlock(&swim3_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1030 1031 |
return 0; } |
4bbde7778 swim[3]: Convert ... |
1032 1033 |
static unsigned int floppy_check_events(struct gendisk *disk, unsigned int clearing) |
1da177e4c Linux-2.6.12-rc2 |
1034 1035 |
{ struct floppy_state *fs = disk->private_data; |
4bbde7778 swim[3]: Convert ... |
1036 |
return fs->ejected ? DISK_EVENT_MEDIA_CHANGE : 0; |
1da177e4c Linux-2.6.12-rc2 |
1037 1038 1039 1040 1041 1042 1043 |
} static int floppy_revalidate(struct gendisk *disk) { struct floppy_state *fs = disk->private_data; struct swim3 __iomem *sw; int ret, n; |
d58b0c39e powerpc/macio: Re... |
1044 1045 |
if (fs->mdev->media_bay && check_media_bay(fs->mdev->media_bay) != MB_FD) |
1da177e4c Linux-2.6.12-rc2 |
1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 |
return -ENXIO; sw = fs->swim3; grab_drive(fs, revalidating, 0); out_8(&sw->intr_enable, 0); out_8(&sw->control_bis, DRIVE_ENABLE); swim3_action(fs, MOTOR_ON); /* necessary? */ fs->write_prot = -1; fs->cur_cyl = -1; mdelay(1); for (n = HZ; n > 0; --n) { if (swim3_readbit(fs, SEEK_COMPLETE)) break; if (signal_pending(current)) break; swim3_select(fs, RELAX); |
86e848624 [PATCH] drivers/b... |
1062 |
schedule_timeout_interruptible(1); |
1da177e4c Linux-2.6.12-rc2 |
1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 |
} ret = swim3_readbit(fs, SEEK_COMPLETE) == 0 || swim3_readbit(fs, DISK_IN) == 0; if (ret) swim3_action(fs, MOTOR_OFF); else { fs->ejected = 0; swim3_action(fs, SETMFM); } swim3_select(fs, RELAX); release_drive(fs); return ret; } |
83d5cde47 const: make block... |
1077 |
static const struct block_device_operations floppy_fops = { |
6e9624b8c block: push down ... |
1078 |
.open = floppy_unlocked_open, |
b4d9a4425 [PATCH] switch swim3 |
1079 |
.release = floppy_release, |
8a6cfeb6d block: push down ... |
1080 |
.ioctl = floppy_ioctl, |
4bbde7778 swim[3]: Convert ... |
1081 |
.check_events = floppy_check_events, |
1da177e4c Linux-2.6.12-rc2 |
1082 1083 |
.revalidate_disk= floppy_revalidate, }; |
b30254574 block/swim3: Lock... |
1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 |
static void swim3_mb_event(struct macio_dev* mdev, int mb_state) { struct floppy_state *fs = macio_get_drvdata(mdev); struct swim3 __iomem *sw = fs->swim3; if (!fs) return; if (mb_state != MB_FD) return; /* Clear state */ out_8(&sw->intr_enable, 0); in_8(&sw->intr); in_8(&sw->error); } |
3e9a69275 [POWERPC] Update ... |
1099 |
static int swim3_add_device(struct macio_dev *mdev, int index) |
1da177e4c Linux-2.6.12-rc2 |
1100 |
{ |
61c7a080a of: Always use 's... |
1101 |
struct device_node *swim = mdev->ofdev.dev.of_node; |
3e9a69275 [POWERPC] Update ... |
1102 1103 |
struct floppy_state *fs = &floppy_states[index]; int rc = -EBUSY; |
1da177e4c Linux-2.6.12-rc2 |
1104 |
|
b30254574 block/swim3: Lock... |
1105 1106 1107 1108 |
/* Do this first for message macros */ memset(fs, 0, sizeof(*fs)); fs->mdev = mdev; fs->index = index; |
3e9a69275 [POWERPC] Update ... |
1109 1110 |
/* Check & Request resources */ if (macio_resource_count(mdev) < 2) { |
b30254574 block/swim3: Lock... |
1111 1112 |
swim3_err("%s", "No address in device-tree "); |
3e9a69275 [POWERPC] Update ... |
1113 |
return -ENXIO; |
1da177e4c Linux-2.6.12-rc2 |
1114 |
} |
b30254574 block/swim3: Lock... |
1115 1116 1117 1118 |
if (macio_irq_count(mdev) < 1) { swim3_err("%s", "No interrupt in device-tree "); return -ENXIO; |
cc5d0189b [PATCH] powerpc: ... |
1119 |
} |
3e9a69275 [POWERPC] Update ... |
1120 |
if (macio_request_resource(mdev, 0, "swim3 (mmio)")) { |
b30254574 block/swim3: Lock... |
1121 1122 |
swim3_err("%s", "Can't request mmio resource "); |
3e9a69275 [POWERPC] Update ... |
1123 |
return -EBUSY; |
1da177e4c Linux-2.6.12-rc2 |
1124 |
} |
3e9a69275 [POWERPC] Update ... |
1125 |
if (macio_request_resource(mdev, 1, "swim3 (dma)")) { |
b30254574 block/swim3: Lock... |
1126 1127 |
swim3_err("%s", "Can't request dma resource "); |
3e9a69275 [POWERPC] Update ... |
1128 1129 |
macio_release_resource(mdev, 0); return -EBUSY; |
1da177e4c Linux-2.6.12-rc2 |
1130 |
} |
3e9a69275 [POWERPC] Update ... |
1131 |
dev_set_drvdata(&mdev->ofdev.dev, fs); |
1da177e4c Linux-2.6.12-rc2 |
1132 |
|
d58b0c39e powerpc/macio: Re... |
1133 |
if (mdev->media_bay == NULL) |
1da177e4c Linux-2.6.12-rc2 |
1134 1135 |
pmac_call_feature(PMAC_FTR_SWIM3_ENABLE, swim, 0, 1); |
1da177e4c Linux-2.6.12-rc2 |
1136 |
fs->state = idle; |
3e9a69275 [POWERPC] Update ... |
1137 1138 1139 |
fs->swim3 = (struct swim3 __iomem *) ioremap(macio_resource_start(mdev, 0), 0x200); if (fs->swim3 == NULL) { |
b30254574 block/swim3: Lock... |
1140 1141 |
swim3_err("%s", "Couldn't map mmio registers "); |
3e9a69275 [POWERPC] Update ... |
1142 1143 1144 1145 1146 1147 |
rc = -ENOMEM; goto out_release; } fs->dma = (struct dbdma_regs __iomem *) ioremap(macio_resource_start(mdev, 1), 0x200); if (fs->dma == NULL) { |
b30254574 block/swim3: Lock... |
1148 1149 |
swim3_err("%s", "Couldn't map dma registers "); |
3e9a69275 [POWERPC] Update ... |
1150 1151 1152 1153 1154 |
iounmap(fs->swim3); rc = -ENOMEM; goto out_release; } fs->swim3_intr = macio_irq(mdev, 0); |
a419aef8b trivial: remove u... |
1155 |
fs->dma_intr = macio_irq(mdev, 1); |
1da177e4c Linux-2.6.12-rc2 |
1156 1157 1158 1159 1160 |
fs->cur_cyl = -1; fs->cur_sector = -1; fs->secpercyl = 36; fs->secpertrack = 18; fs->total_secs = 2880; |
1da177e4c Linux-2.6.12-rc2 |
1161 1162 1163 1164 1165 |
init_waitqueue_head(&fs->wait); fs->dma_cmd = (struct dbdma_cmd *) DBDMA_ALIGN(fs->dbdma_cmd_space); memset(fs->dma_cmd, 0, 2 * sizeof(struct dbdma_cmd)); st_le16(&fs->dma_cmd[1].command, DBDMA_STOP); |
b30254574 block/swim3: Lock... |
1166 1167 |
if (mdev->media_bay == NULL || check_media_bay(mdev->media_bay) == MB_FD) swim3_mb_event(mdev, MB_FD); |
1da177e4c Linux-2.6.12-rc2 |
1168 |
if (request_irq(fs->swim3_intr, swim3_interrupt, 0, "SWIM3", fs)) { |
b30254574 block/swim3: Lock... |
1169 1170 |
swim3_err("%s", "Couldn't request interrupt "); |
1da177e4c Linux-2.6.12-rc2 |
1171 |
pmac_call_feature(PMAC_FTR_SWIM3_ENABLE, swim, 0, 0); |
3e9a69275 [POWERPC] Update ... |
1172 |
goto out_unmap; |
1da177e4c Linux-2.6.12-rc2 |
1173 1174 |
return -EBUSY; } |
1da177e4c Linux-2.6.12-rc2 |
1175 1176 |
init_timer(&fs->timeout); |
b30254574 block/swim3: Lock... |
1177 1178 |
swim3_info("SWIM3 floppy controller %s ", |
d58b0c39e powerpc/macio: Re... |
1179 |
mdev->media_bay ? "in media bay" : ""); |
1da177e4c Linux-2.6.12-rc2 |
1180 |
|
3e9a69275 [POWERPC] Update ... |
1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 |
return 0; out_unmap: iounmap(fs->dma); iounmap(fs->swim3); out_release: macio_release_resource(mdev, 0); macio_release_resource(mdev, 1); return rc; } static int __devinit swim3_attach(struct macio_dev *mdev, const struct of_device_id *match) { |
3e9a69275 [POWERPC] Update ... |
1196 |
struct gendisk *disk; |
b30254574 block/swim3: Lock... |
1197 1198 1199 1200 1201 |
int index, rc; index = floppy_count++; if (index >= MAX_FLOPPIES) return -ENXIO; |
3e9a69275 [POWERPC] Update ... |
1202 1203 |
/* Add the drive */ |
b30254574 block/swim3: Lock... |
1204 |
rc = swim3_add_device(mdev, index); |
3e9a69275 [POWERPC] Update ... |
1205 1206 |
if (rc) return rc; |
b30254574 block/swim3: Lock... |
1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 |
/* Now register that disk. Same comment about failure handling */ disk = disks[index] = alloc_disk(1); if (disk == NULL) return -ENOMEM; disk->queue = blk_init_queue(do_fd_request, &swim3_lock); if (disk->queue == NULL) { put_disk(disk); return -ENOMEM; } disk->queue->queuedata = &floppy_states[index]; |
3e9a69275 [POWERPC] Update ... |
1217 |
|
b30254574 block/swim3: Lock... |
1218 |
if (index == 0) { |
3e9a69275 [POWERPC] Update ... |
1219 1220 1221 1222 1223 |
/* If we failed, there isn't much we can do as the driver is still * too dumb to remove the device, just bail out */ if (register_blkdev(FLOPPY_MAJOR, "fd")) return 0; |
3e9a69275 [POWERPC] Update ... |
1224 |
} |
3e9a69275 [POWERPC] Update ... |
1225 |
disk->major = FLOPPY_MAJOR; |
b30254574 block/swim3: Lock... |
1226 |
disk->first_minor = index; |
3e9a69275 [POWERPC] Update ... |
1227 |
disk->fops = &floppy_fops; |
b30254574 block/swim3: Lock... |
1228 |
disk->private_data = &floppy_states[index]; |
3e9a69275 [POWERPC] Update ... |
1229 |
disk->flags |= GENHD_FL_REMOVABLE; |
b30254574 block/swim3: Lock... |
1230 |
sprintf(disk->disk_name, "fd%d", index); |
3e9a69275 [POWERPC] Update ... |
1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 |
set_capacity(disk, 2880); add_disk(disk); return 0; } static struct of_device_id swim3_match[] = { { .name = "swim3", }, { .compatible = "ohare-swim3" }, { .compatible = "swim3" }, |
f41c53a56 block: swim3: fix... |
1248 |
{ /* end of list */ } |
3e9a69275 [POWERPC] Update ... |
1249 1250 1251 1252 |
}; static struct macio_driver swim3_driver = { |
c2cdf6aba powerpc/macio: Fi... |
1253 1254 1255 1256 |
.driver = { .name = "swim3", .of_match_table = swim3_match, }, |
3e9a69275 [POWERPC] Update ... |
1257 |
.probe = swim3_attach, |
b30254574 block/swim3: Lock... |
1258 1259 1260 |
#ifdef CONFIG_PMAC_MEDIABAY .mediabay_event = swim3_mb_event, #endif |
3e9a69275 [POWERPC] Update ... |
1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 |
#if 0 .suspend = swim3_suspend, .resume = swim3_resume, #endif }; int swim3_init(void) { macio_register_driver(&swim3_driver); |
1da177e4c Linux-2.6.12-rc2 |
1271 1272 1273 1274 1275 1276 1277 1278 |
return 0; } module_init(swim3_init) MODULE_LICENSE("GPL"); MODULE_AUTHOR("Paul Mackerras"); MODULE_ALIAS_BLOCKDEV_MAJOR(FLOPPY_MAJOR); |