This driver has never been wired up due to the life of the Linux
git tree, and has severely bitrotted.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/parisc/Makefile | 3 -
drivers/parisc/ccio-rm-dma.c | 202 -----------------------------------
2 files changed, 205 deletions(-)
delete mode 100644 drivers/parisc/ccio-rm-dma.c
diff --git a/drivers/parisc/Makefile b/drivers/parisc/Makefile
index 3cd5e6cb8478..99fa6a89e0b9 100644
--- a/drivers/parisc/Makefile
+++ b/drivers/parisc/Makefile
@@ -8,9 +8,6 @@
obj-$(CONFIG_IOSAPIC) += iosapic.o
obj-$(CONFIG_IOMMU_SBA) += sba_iommu.o
obj-$(CONFIG_PCI_LBA) += lba_pci.o
-
-# Only use one of them: ccio-rm-dma is for PCX-W systems *only*
-# obj-$(CONFIG_IOMMU_CCIO) += ccio-rm-dma.o
obj-$(CONFIG_IOMMU_CCIO) += ccio-dma.o
obj-$(CONFIG_GSC) += gsc.o
diff --git a/drivers/parisc/ccio-rm-dma.c b/drivers/parisc/ccio-rm-dma.c
deleted file mode 100644
index df7932af48b7..000000000000
--- a/drivers/parisc/ccio-rm-dma.c
+++ /dev/null
@@ -1,202 +0,0 @@
-/*
- * ccio-rm-dma.c:
- * DMA management routines for first generation cache-coherent machines.
- * "Real Mode" operation refers to U2/Uturn chip operation. The chip
- * can perform coherency checks w/o using the I/O MMU. That's all we
- * need until support for more than 4GB phys mem is needed.
- *
- * This is the trivial case - basically what x86 does.
- *
- * Drawbacks of using Real Mode are:
- * o outbound DMA is slower since one isn't using the prefetching
- * U2 can do for outbound DMA.
- * o Ability to do scatter/gather in HW is also lost.
- * o only known to work with PCX-W processor. (eg C360)
- * (PCX-U/U+ are not coherent with U2 in real mode.)
- *
- *
- * 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.
- *
- *
- * Original version/author:
- * CVSROOT=:pserver:anonymous@198.186.203.37:/cvsroot/linux-parisc
- * cvs -z3 co linux/arch/parisc/kernel/dma-rm.c
- *
- * (C) Copyright 2000 Philipp Rumpf <prumpf@xxxxxxx>
- *
- *
- * Adopted for The Puffin Group's parisc-linux port by Grant Grundler.
- * (C) Copyright 2000 Grant Grundler <grundler@xxxxxxxxxxxxxxxxxxxxxx>
- *
- */
-
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/pci.h>
-#include <linux/gfp.h>
-
-#include <linux/uaccess.h>
-
-#include <asm/io.h>
-#include <asm/hardware.h>
-#include <asm/page.h>
-
-/* Only chose "ccio" since that's what HP-UX calls it....
-** Make it easier for folks to migrate from one to the other :^)
-*/
-#define MODULE_NAME "ccio"
-
-#define U2_IOA_RUNWAY 0x580
-#define U2_BC_GSC 0x501
-#define UTURN_IOA_RUNWAY 0x581
-#define UTURN_BC_GSC 0x502
-
-#define IS_U2(id) ( \
- (((id)->hw_type == HPHW_IOA) && ((id)->hversion == U2_IOA_RUNWAY)) || \
- (((id)->hw_type == HPHW_BCPORT) && ((id)->hversion == U2_BC_GSC)) \
-)
-
-#define IS_UTURN(id) ( \
- (((id)->hw_type == HPHW_IOA) && ((id)->hversion == UTURN_IOA_RUNWAY)) || \
- (((id)->hw_type == HPHW_BCPORT) && ((id)->hversion == UTURN_BC_GSC)) \
-)
-
-static int ccio_dma_supported( struct pci_dev *dev, u64 mask)
-{
- if (dev == NULL) {
- printk(KERN_ERR MODULE_NAME ": EISA/ISA/et al not supported\n");
- BUG();
- return(0);
- }
-
- /* only support 32-bit devices (ie PCI/GSC) */
- return((int) (mask >= 0xffffffffUL));
-}
-
-
-static void *ccio_alloc_consistent(struct pci_dev *dev, size_t size,
- dma_addr_t *handle)
-{
- void *ret;
-
- ret = (void *)__get_free_pages(GFP_ATOMIC, get_order(size));
-
- if (ret != NULL) {
- memset(ret, 0, size);
- *handle = virt_to_phys(ret);
- }
- return ret;
-}
-
-static void ccio_free_consistent(struct pci_dev *dev, size_t size,
- void *vaddr, dma_addr_t handle)
-{
- free_pages((unsigned long)vaddr, get_order(size));
-}
-
-static dma_addr_t ccio_map_single(struct pci_dev *dev, void *ptr, size_t size,
- int direction)
-{
- return virt_to_phys(ptr);
-}
-
-static void ccio_unmap_single(struct pci_dev *dev, dma_addr_t dma_addr,
- size_t size, int direction)
-{
- /* Nothing to do */
-}
-
-
-static int ccio_map_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents, int direction)
-{
- int tmp = nents;
-
- /* KISS: map each buffer separately. */
- while (nents) {
- sg_dma_address(sglist) = ccio_map_single(dev, sglist->address, sglist->length, direction);
- sg_dma_len(sglist) = sglist->length;
- nents--;
- sglist++;
- }
-
- return tmp;
-}
-
-
-static void ccio_unmap_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents, int direction)
-{
-#if 0
- while (nents) {
- ccio_unmap_single(dev, sg_dma_address(sglist), sg_dma_len(sglist), direction);
- nents--;
- sglist++;
- }
- return;
-#else
- /* Do nothing (copied from current ccio_unmap_single() :^) */
-#endif
-}
-
-
-static struct pci_dma_ops ccio_ops = {
- ccio_dma_supported,
- ccio_alloc_consistent,
- ccio_free_consistent,
- ccio_map_single,
- ccio_unmap_single,
- ccio_map_sg,
- ccio_unmap_sg,
- NULL, /* dma_sync_single_for_cpu : NOP for U2 */
- NULL, /* dma_sync_single_for_device : NOP for U2 */
- NULL, /* dma_sync_sg_for_cpu : ditto */
- NULL, /* dma_sync_sg_for_device : ditto */
-};
-
-
-/*
-** Determine if u2 should claim this chip (return 0) or not (return 1).
-** If so, initialize the chip and tell other partners in crime they
-** have work to do.
-*/
-static int __init
-ccio_probe(struct parisc_device *dev)
-{
- printk(KERN_INFO "%s found %s at 0x%lx\n", MODULE_NAME,
- dev->id.hversion == U2_BC_GSC ? "U2" : "UTurn",
- dev->hpa.start);
-
-/*
-** FIXME - should check U2 registers to verify it's really running
-** in "Real Mode".
-*/
-
-#if 0
-/* will need this for "Virtual Mode" operation */
- ccio_hw_init(ccio_dev);
- ccio_common_init(ccio_dev);
-#endif
- hppa_dma_ops = &ccio_ops;
- return 0;
-}
-
-static const struct parisc_device_id ccio_tbl[] __initconst = {
- { HPHW_BCPORT, HVERSION_REV_ANY_ID, U2_BC_GSC, 0xc },
- { HPHW_BCPORT, HVERSION_REV_ANY_ID, UTURN_BC_GSC, 0xc },
- { 0, }
-};
-
-static struct parisc_driver ccio_driver __refdata = {
- .name = "U2/Uturn",
- .id_table = ccio_tbl,
- .probe = ccio_probe,
-};
-
-void __init ccio_init(void)
-{
- register_parisc_driver(&ccio_driver);
-}
--
2.19.1
