On Sun, Apr 17, 2005 at 10:14:24PM +0200, Adrian Bunk wrote:
> The options CONFIG_IEEE1394_PCILYNX_LOCALRAM and
> CONFIG_IEEE1394_PCILYNX_PORTS are not available for some time.
>
> Is this patch for removing them and the code behind them correct, or is
> a future usage planned?
I don't see a use for them, and I'm probably the only person who cares
about pcilynx :) Applied to our SVN, will send in for 2.6.13.
Thanks,
Jody
>
> Signed-off-by: Adrian Bunk <[email protected]>
>
> ---
>
> drivers/ieee1394/Kconfig | 5
> drivers/ieee1394/pcilynx.c | 391 -------------------------------------
> drivers/ieee1394/pcilynx.h | 49 ----
> 3 files changed, 2 insertions(+), 443 deletions(-)
>
> --- linux-2.6.12-rc2-mm3-full/drivers/ieee1394/Kconfig.old 2005-04-17 21:01:11.000000000 +0200
> +++ linux-2.6.12-rc2-mm3-full/drivers/ieee1394/Kconfig 2005-04-17 21:01:23.000000000 +0200
> @@ -84,11 +84,6 @@
> To compile this driver as a module, say M here: the
> module will be called pcilynx.
>
> -# Non-maintained pcilynx options
> -# if [ "$CONFIG_IEEE1394_PCILYNX" != "n" ]; then
> -# bool ' Use PCILynx local RAM' CONFIG_IEEE1394_PCILYNX_LOCALRAM
> -# bool ' Support for non-IEEE1394 local ports' CONFIG_IEEE1394_PCILYNX_PORTS
> -# fi
> config IEEE1394_OHCI1394
> tristate "OHCI-1394 support"
> depends on PCI && IEEE1394
> --- linux-2.6.12-rc2-mm3-full/drivers/ieee1394/pcilynx.h.old 2005-04-17 21:01:31.000000000 +0200
> +++ linux-2.6.12-rc2-mm3-full/drivers/ieee1394/pcilynx.h 2005-04-17 21:02:21.000000000 +0200
> @@ -55,16 +55,6 @@
> void __iomem *aux_port;
> quadlet_t bus_info_block[5];
>
> -#ifdef CONFIG_IEEE1394_PCILYNX_PORTS
> - atomic_t aux_intr_seen;
> - wait_queue_head_t aux_intr_wait;
> -
> - void *mem_dma_buffer;
> - dma_addr_t mem_dma_buffer_dma;
> - struct semaphore mem_dma_mutex;
> - wait_queue_head_t mem_dma_intr_wait;
> -#endif
> -
> /*
> * use local RAM of LOCALRAM_SIZE bytes for PCLs, which allows for
> * LOCALRAM_SIZE * 8 PCLs (each sized 128 bytes);
> @@ -72,11 +62,9 @@
> */
> u8 pcl_bmap[LOCALRAM_SIZE / 1024];
>
> -#ifndef CONFIG_IEEE1394_PCILYNX_LOCALRAM
> /* point to PCLs memory area if needed */
> void *pcl_mem;
> dma_addr_t pcl_mem_dma;
> -#endif
>
> /* PCLs for local mem / aux transfers */
> pcl_t dmem_pcl;
> @@ -378,39 +366,6 @@
> #define pcloffs(MEMBER) (offsetof(struct ti_pcl, MEMBER))
>
>
> -#ifdef CONFIG_IEEE1394_PCILYNX_LOCALRAM
> -
> -static inline void put_pcl(const struct ti_lynx *lynx, pcl_t pclid,
> - const struct ti_pcl *pcl)
> -{
> - int i;
> - u32 *in = (u32 *)pcl;
> - u32 *out = (u32 *)(lynx->local_ram + pclid * sizeof(struct ti_pcl));
> -
> - for (i = 0; i < 32; i++, out++, in++) {
> - writel(*in, out);
> - }
> -}
> -
> -static inline void get_pcl(const struct ti_lynx *lynx, pcl_t pclid,
> - struct ti_pcl *pcl)
> -{
> - int i;
> - u32 *out = (u32 *)pcl;
> - u32 *in = (u32 *)(lynx->local_ram + pclid * sizeof(struct ti_pcl));
> -
> - for (i = 0; i < 32; i++, out++, in++) {
> - *out = readl(in);
> - }
> -}
> -
> -static inline u32 pcl_bus(const struct ti_lynx *lynx, pcl_t pclid)
> -{
> - return pci_resource_start(lynx->dev, 1) + pclid * sizeof(struct ti_pcl);
> -}
> -
> -#else /* CONFIG_IEEE1394_PCILYNX_LOCALRAM */
> -
> static inline void put_pcl(const struct ti_lynx *lynx, pcl_t pclid,
> const struct ti_pcl *pcl)
> {
> @@ -431,10 +386,8 @@
> return lynx->pcl_mem_dma + pclid * sizeof(struct ti_pcl);
> }
>
> -#endif /* CONFIG_IEEE1394_PCILYNX_LOCALRAM */
> -
>
> -#if defined (CONFIG_IEEE1394_PCILYNX_LOCALRAM) || defined (__BIG_ENDIAN)
> +#if defined (__BIG_ENDIAN)
> typedef struct ti_pcl pcltmp_t;
>
> static inline struct ti_pcl *edit_pcl(const struct ti_lynx *lynx, pcl_t pclid,
> --- linux-2.6.12-rc2-mm3-full/drivers/ieee1394/pcilynx.c.old 2005-04-17 21:02:29.000000000 +0200
> +++ linux-2.6.12-rc2-mm3-full/drivers/ieee1394/pcilynx.c 2005-04-17 21:05:02.000000000 +0200
> @@ -834,327 +834,6 @@
> * IEEE-1394 functionality section END *
> ***************************************/
>
> -#ifdef CONFIG_IEEE1394_PCILYNX_PORTS
> -/* VFS functions for local bus / aux device access. Access to those
> - * is implemented as a character device instead of block devices
> - * because buffers are not wanted for this. Therefore llseek (from
> - * VFS) can be used for these char devices with obvious effects.
> - */
> -static int mem_open(struct inode*, struct file*);
> -static int mem_release(struct inode*, struct file*);
> -static unsigned int aux_poll(struct file*, struct poll_table_struct*);
> -static loff_t mem_llseek(struct file*, loff_t, int);
> -static ssize_t mem_read (struct file*, char*, size_t, loff_t*);
> -static ssize_t mem_write(struct file*, const char*, size_t, loff_t*);
> -
> -
> -static struct file_operations aux_ops = {
> - .owner = THIS_MODULE,
> - .read = mem_read,
> - .write = mem_write,
> - .poll = aux_poll,
> - .llseek = mem_llseek,
> - .open = mem_open,
> - .release = mem_release,
> -};
> -
> -
> -static void aux_setup_pcls(struct ti_lynx *lynx)
> -{
> - struct ti_pcl pcl;
> -
> - pcl.next = PCL_NEXT_INVALID;
> - pcl.user_data = pcl_bus(lynx, lynx->dmem_pcl);
> - put_pcl(lynx, lynx->dmem_pcl, &pcl);
> -}
> -
> -static int mem_open(struct inode *inode, struct file *file)
> -{
> - int cid = iminor(inode);
> - enum { t_rom, t_aux, t_ram } type;
> - struct memdata *md;
> -
> - if (cid < PCILYNX_MINOR_AUX_START) {
> - /* just for completeness */
> - return -ENXIO;
> - } else if (cid < PCILYNX_MINOR_ROM_START) {
> - cid -= PCILYNX_MINOR_AUX_START;
> - if (cid >= num_of_cards || !cards[cid].aux_port)
> - return -ENXIO;
> - type = t_aux;
> - } else if (cid < PCILYNX_MINOR_RAM_START) {
> - cid -= PCILYNX_MINOR_ROM_START;
> - if (cid >= num_of_cards || !cards[cid].local_rom)
> - return -ENXIO;
> - type = t_rom;
> - } else {
> - /* WARNING: Know what you are doing when opening RAM.
> - * It is currently used inside the driver! */
> - cid -= PCILYNX_MINOR_RAM_START;
> - if (cid >= num_of_cards || !cards[cid].local_ram)
> - return -ENXIO;
> - type = t_ram;
> - }
> -
> - md = (struct memdata *)kmalloc(sizeof(struct memdata), SLAB_KERNEL);
> - if (md == NULL)
> - return -ENOMEM;
> -
> - md->lynx = &cards[cid];
> - md->cid = cid;
> -
> - switch (type) {
> - case t_rom:
> - md->type = rom;
> - break;
> - case t_ram:
> - md->type = ram;
> - break;
> - case t_aux:
> - atomic_set(&md->aux_intr_last_seen,
> - atomic_read(&cards[cid].aux_intr_seen));
> - md->type = aux;
> - break;
> - }
> -
> - file->private_data = md;
> -
> - return 0;
> -}
> -
> -static int mem_release(struct inode *inode, struct file *file)
> -{
> - kfree(file->private_data);
> - return 0;
> -}
> -
> -static unsigned int aux_poll(struct file *file, poll_table *pt)
> -{
> - struct memdata *md = (struct memdata *)file->private_data;
> - int cid = md->cid;
> - unsigned int mask;
> -
> - /* reading and writing is always allowed */
> - mask = POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM;
> -
> - if (md->type == aux) {
> - poll_wait(file, &cards[cid].aux_intr_wait, pt);
> -
> - if (atomic_read(&md->aux_intr_last_seen)
> - != atomic_read(&cards[cid].aux_intr_seen)) {
> - mask |= POLLPRI;
> - atomic_inc(&md->aux_intr_last_seen);
> - }
> - }
> -
> - return mask;
> -}
> -
> -loff_t mem_llseek(struct file *file, loff_t offs, int orig)
> -{
> - loff_t newoffs;
> -
> - switch (orig) {
> - case 0:
> - newoffs = offs;
> - break;
> - case 1:
> - newoffs = offs + file->f_pos;
> - break;
> - case 2:
> - newoffs = PCILYNX_MAX_MEMORY + 1 + offs;
> - break;
> - default:
> - return -EINVAL;
> - }
> -
> - if (newoffs < 0 || newoffs > PCILYNX_MAX_MEMORY + 1) return -EINVAL;
> -
> - file->f_pos = newoffs;
> - return newoffs;
> -}
> -
> -/*
> - * do not DMA if count is too small because this will have a serious impact
> - * on performance - the value 2400 was found by experiment and may not work
> - * everywhere as good as here - use mem_mindma option for modules to change
> - */
> -static short mem_mindma = 2400;
> -module_param(mem_mindma, short, 0444);
> -MODULE_PARM_DESC(mem_mindma, "Minimum amount of data required to use DMA");
> -
> -static ssize_t mem_dmaread(struct memdata *md, u32 physbuf, ssize_t count,
> - int offset)
> -{
> - pcltmp_t pcltmp;
> - struct ti_pcl *pcl;
> - size_t retval;
> - int i;
> - DECLARE_WAITQUEUE(wait, current);
> -
> - count &= ~3;
> - count = min(count, 53196);
> - retval = count;
> -
> - if (reg_read(md->lynx, DMA_CHAN_CTRL(CHANNEL_LOCALBUS))
> - & DMA_CHAN_CTRL_BUSY) {
> - PRINT(KERN_WARNING, md->lynx->id, "DMA ALREADY ACTIVE!");
> - }
> -
> - reg_write(md->lynx, LBUS_ADDR, md->type | offset);
> -
> - pcl = edit_pcl(md->lynx, md->lynx->dmem_pcl, &pcltmp);
> - pcl->buffer[0].control = PCL_CMD_LBUS_TO_PCI | min(count, 4092);
> - pcl->buffer[0].pointer = physbuf;
> - count -= 4092;
> -
> - i = 0;
> - while (count > 0) {
> - i++;
> - pcl->buffer[i].control = min(count, 4092);
> - pcl->buffer[i].pointer = physbuf + i * 4092;
> - count -= 4092;
> - }
> - pcl->buffer[i].control |= PCL_LAST_BUFF;
> - commit_pcl(md->lynx, md->lynx->dmem_pcl, &pcltmp);
> -
> - set_current_state(TASK_INTERRUPTIBLE);
> - add_wait_queue(&md->lynx->mem_dma_intr_wait, &wait);
> - run_sub_pcl(md->lynx, md->lynx->dmem_pcl, 2, CHANNEL_LOCALBUS);
> -
> - schedule();
> - while (reg_read(md->lynx, DMA_CHAN_CTRL(CHANNEL_LOCALBUS))
> - & DMA_CHAN_CTRL_BUSY) {
> - if (signal_pending(current)) {
> - retval = -EINTR;
> - break;
> - }
> - schedule();
> - }
> -
> - reg_write(md->lynx, DMA_CHAN_CTRL(CHANNEL_LOCALBUS), 0);
> - remove_wait_queue(&md->lynx->mem_dma_intr_wait, &wait);
> -
> - if (reg_read(md->lynx, DMA_CHAN_CTRL(CHANNEL_LOCALBUS))
> - & DMA_CHAN_CTRL_BUSY) {
> - PRINT(KERN_ERR, md->lynx->id, "DMA STILL ACTIVE!");
> - }
> -
> - return retval;
> -}
> -
> -static ssize_t mem_read(struct file *file, char *buffer, size_t count,
> - loff_t *offset)
> -{
> - struct memdata *md = (struct memdata *)file->private_data;
> - ssize_t bcount;
> - size_t alignfix;
> - loff_t off = *offset; /* avoid useless 64bit-arithmetic */
> - ssize_t retval;
> - void *membase;
> -
> - if ((off + count) > PCILYNX_MAX_MEMORY+1) {
> - count = PCILYNX_MAX_MEMORY+1 - off;
> - }
> - if (count == 0 || off > PCILYNX_MAX_MEMORY) {
> - return -ENOSPC;
> - }
> -
> - switch (md->type) {
> - case rom:
> - membase = md->lynx->local_rom;
> - break;
> - case ram:
> - membase = md->lynx->local_ram;
> - break;
> - case aux:
> - membase = md->lynx->aux_port;
> - break;
> - default:
> - panic("pcilynx%d: unsupported md->type %d in %s",
> - md->lynx->id, md->type, __FUNCTION__);
> - }
> -
> - down(&md->lynx->mem_dma_mutex);
> -
> - if (count < mem_mindma) {
> - memcpy_fromio(md->lynx->mem_dma_buffer, membase+off, count);
> - goto out;
> - }
> -
> - bcount = count;
> - alignfix = 4 - (off % 4);
> - if (alignfix != 4) {
> - if (bcount < alignfix) {
> - alignfix = bcount;
> - }
> - memcpy_fromio(md->lynx->mem_dma_buffer, membase+off,
> - alignfix);
> - if (bcount == alignfix) {
> - goto out;
> - }
> - bcount -= alignfix;
> - off += alignfix;
> - }
> -
> - while (bcount >= 4) {
> - retval = mem_dmaread(md, md->lynx->mem_dma_buffer_dma
> - + count - bcount, bcount, off);
> - if (retval < 0) return retval;
> -
> - bcount -= retval;
> - off += retval;
> - }
> -
> - if (bcount) {
> - memcpy_fromio(md->lynx->mem_dma_buffer + count - bcount,
> - membase+off, bcount);
> - }
> -
> - out:
> - retval = copy_to_user(buffer, md->lynx->mem_dma_buffer, count);
> - up(&md->lynx->mem_dma_mutex);
> -
> - if (retval) return -EFAULT;
> - *offset += count;
> - return count;
> -}
> -
> -
> -static ssize_t mem_write(struct file *file, const char *buffer, size_t count,
> - loff_t *offset)
> -{
> - struct memdata *md = (struct memdata *)file->private_data;
> -
> - if (((*offset) + count) > PCILYNX_MAX_MEMORY+1) {
> - count = PCILYNX_MAX_MEMORY+1 - *offset;
> - }
> - if (count == 0 || *offset > PCILYNX_MAX_MEMORY) {
> - return -ENOSPC;
> - }
> -
> - /* FIXME: dereferencing pointers to PCI mem doesn't work everywhere */
> - switch (md->type) {
> - case aux:
> - if (copy_from_user(md->lynx->aux_port+(*offset), buffer, count))
> - return -EFAULT;
> - break;
> - case ram:
> - if (copy_from_user(md->lynx->local_ram+(*offset), buffer, count))
> - return -EFAULT;
> - break;
> - case rom:
> - /* the ROM may be writeable */
> - if (copy_from_user(md->lynx->local_rom+(*offset), buffer, count))
> - return -EFAULT;
> - break;
> - }
> -
> - file->f_pos += count;
> - return count;
> -}
> -#endif /* CONFIG_IEEE1394_PCILYNX_PORTS */
> -
>
> /********************************************************
> * Global stuff (interrupt handler, init/shutdown code) *
> @@ -1181,18 +860,6 @@
> reg_write(lynx, LINK_INT_STATUS, linkint);
> reg_write(lynx, PCI_INT_STATUS, intmask);
>
> -#ifdef CONFIG_IEEE1394_PCILYNX_PORTS
> - if (intmask & PCI_INT_AUX_INT) {
> - atomic_inc(&lynx->aux_intr_seen);
> - wake_up_interruptible(&lynx->aux_intr_wait);
> - }
> -
> - if (intmask & PCI_INT_DMA_HLT(CHANNEL_LOCALBUS)) {
> - wake_up_interruptible(&lynx->mem_dma_intr_wait);
> - }
> -#endif
> -
> -
> if (intmask & PCI_INT_1394) {
> if (linkint & LINK_INT_PHY_TIMEOUT) {
> PRINT(KERN_INFO, lynx->id, "PHY timeout occurred");
> @@ -1484,15 +1151,9 @@
> pci_free_consistent(lynx->dev, PAGE_SIZE, lynx->rcv_page,
> lynx->rcv_page_dma);
> case have_aux_buf:
> -#ifdef CONFIG_IEEE1394_PCILYNX_PORTS
> - pci_free_consistent(lynx->dev, 65536, lynx->mem_dma_buffer,
> - lynx->mem_dma_buffer_dma);
> -#endif
> case have_pcl_mem:
> -#ifndef CONFIG_IEEE1394_PCILYNX_LOCALRAM
> pci_free_consistent(lynx->dev, LOCALRAM_SIZE, lynx->pcl_mem,
> lynx->pcl_mem_dma);
> -#endif
> case clear:
> /* do nothing - already freed */
> ;
> @@ -1546,7 +1207,6 @@
> spin_lock_init(&lynx->lock);
> spin_lock_init(&lynx->phy_reg_lock);
>
> -#ifndef CONFIG_IEEE1394_PCILYNX_LOCALRAM
> lynx->pcl_mem = pci_alloc_consistent(dev, LOCALRAM_SIZE,
> &lynx->pcl_mem_dma);
>
> @@ -1558,16 +1218,6 @@
> } else {
> FAIL("failed to allocate PCL memory area");
> }
> -#endif
> -
> -#ifdef CONFIG_IEEE1394_PCILYNX_PORTS
> - lynx->mem_dma_buffer = pci_alloc_consistent(dev, 65536,
> - &lynx->mem_dma_buffer_dma);
> - if (lynx->mem_dma_buffer == NULL) {
> - FAIL("failed to allocate DMA buffer for aux");
> - }
> - lynx->state = have_aux_buf;
> -#endif
>
> lynx->rcv_page = pci_alloc_consistent(dev, PAGE_SIZE,
> &lynx->rcv_page_dma);
> @@ -1597,13 +1247,6 @@
> FAIL("failed to remap registers - card not accessible");
> }
>
> -#ifdef CONFIG_IEEE1394_PCILYNX_LOCALRAM
> - if (lynx->local_ram == NULL) {
> - FAIL("failed to remap local RAM which is required for "
> - "operation");
> - }
> -#endif
> -
> reg_set_bits(lynx, MISC_CONTROL, MISC_CONTROL_SWRESET);
> /* Fix buggy cards with autoboot pin not tied low: */
> reg_write(lynx, DMA0_CHAN_CTRL, 0);
> @@ -1624,13 +1267,6 @@
>
> /* alloc_pcl return values are not checked, it is expected that the
> * provided PCL space is sufficient for the initial allocations */
> -#ifdef CONFIG_IEEE1394_PCILYNX_PORTS
> - if (lynx->aux_port != NULL) {
> - lynx->dmem_pcl = alloc_pcl(lynx);
> - aux_setup_pcls(lynx);
> - sema_init(&lynx->mem_dma_mutex, 1);
> - }
> -#endif
> lynx->rcv_pcl = alloc_pcl(lynx);
> lynx->rcv_pcl_start = alloc_pcl(lynx);
> lynx->async.pcl = alloc_pcl(lynx);
> @@ -1647,12 +1283,6 @@
>
> reg_write(lynx, PCI_INT_ENABLE, PCI_INT_DMA_ALL);
>
> -#ifdef CONFIG_IEEE1394_PCILYNX_PORTS
> - reg_set_bits(lynx, PCI_INT_ENABLE, PCI_INT_AUX_INT);
> - init_waitqueue_head(&lynx->mem_dma_intr_wait);
> - init_waitqueue_head(&lynx->aux_intr_wait);
> -#endif
> -
> tasklet_init(&lynx->iso_rcv.tq, (void (*)(unsigned long))iso_rcv_bh,
> (unsigned long)lynx);
>
> @@ -1944,37 +1574,18 @@
> {
> int ret;
>
> -#ifdef CONFIG_IEEE1394_PCILYNX_PORTS
> - if (register_chrdev(PCILYNX_MAJOR, PCILYNX_DRIVER_NAME, &aux_ops)) {
> - PRINT_G(KERN_ERR, "allocation of char major number %d failed",
> - PCILYNX_MAJOR);
> - return -EBUSY;
> - }
> -#endif
> -
> ret = pci_register_driver(&lynx_pci_driver);
> if (ret < 0) {
> PRINT_G(KERN_ERR, "PCI module init failed");
> - goto free_char_dev;
> + return ret;
> }
>
> return 0;
> -
> - free_char_dev:
> -#ifdef CONFIG_IEEE1394_PCILYNX_PORTS
> - unregister_chrdev(PCILYNX_MAJOR, PCILYNX_DRIVER_NAME);
> -#endif
> -
> - return ret;
> }
>
> static void __exit pcilynx_cleanup(void)
> {
> pci_unregister_driver(&lynx_pci_driver);
> -
> -#ifdef CONFIG_IEEE1394_PCILYNX_PORTS
> - unregister_chrdev(PCILYNX_MAJOR, PCILYNX_DRIVER_NAME);
> -#endif
> }
>
>
>
>
>
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