From: Christoph Hellwig <hch@lst.de>
To: Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
iommu@lists.linux-foundation.org
Cc: linux-ia64@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
Robin Murphy <robin.murphy@arm.com>
Subject: [PATCH 02/12] MIPS/jazzdma: remove the unused vdma_remap function
Date: Tue, 8 Sep 2020 18:47:48 +0200 [thread overview]
Message-ID: <20200908164758.3177341-3-hch@lst.de> (raw)
In-Reply-To: <20200908164758.3177341-1-hch@lst.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
---
arch/mips/include/asm/jazzdma.h | 2 -
arch/mips/jazz/jazzdma.c | 70 ---------------------------------
2 files changed, 72 deletions(-)
diff --git a/arch/mips/include/asm/jazzdma.h b/arch/mips/include/asm/jazzdma.h
index d13f940022d5f9..c831da7fa89803 100644
--- a/arch/mips/include/asm/jazzdma.h
+++ b/arch/mips/include/asm/jazzdma.h
@@ -10,8 +10,6 @@
*/
extern unsigned long vdma_alloc(unsigned long paddr, unsigned long size);
extern int vdma_free(unsigned long laddr);
-extern int vdma_remap(unsigned long laddr, unsigned long paddr,
- unsigned long size);
extern unsigned long vdma_phys2log(unsigned long paddr);
extern unsigned long vdma_log2phys(unsigned long laddr);
extern void vdma_stats(void); /* for debugging only */
diff --git a/arch/mips/jazz/jazzdma.c b/arch/mips/jazz/jazzdma.c
index 014773f0bfcd74..fe40dbed04c1d6 100644
--- a/arch/mips/jazz/jazzdma.c
+++ b/arch/mips/jazz/jazzdma.c
@@ -209,76 +209,6 @@ int vdma_free(unsigned long laddr)
EXPORT_SYMBOL(vdma_free);
-/*
- * Map certain page(s) to another physical address.
- * Caller must have allocated the page(s) before.
- */
-int vdma_remap(unsigned long laddr, unsigned long paddr, unsigned long size)
-{
- int first, pages;
-
- if (laddr > 0xffffff) {
- if (vdma_debug)
- printk
- ("vdma_map: Invalid logical address: %08lx\n",
- laddr);
- return -EINVAL; /* invalid logical address */
- }
- if (paddr > 0x1fffffff) {
- if (vdma_debug)
- printk
- ("vdma_map: Invalid physical address: %08lx\n",
- paddr);
- return -EINVAL; /* invalid physical address */
- }
-
- pages = (((paddr & (VDMA_PAGESIZE - 1)) + size) >> 12) + 1;
- first = laddr >> 12;
- if (vdma_debug)
- printk("vdma_remap: first=%x, pages=%x\n", first, pages);
- if (first + pages > VDMA_PGTBL_ENTRIES) {
- if (vdma_debug)
- printk("vdma_alloc: Invalid size: %08lx\n", size);
- return -EINVAL;
- }
-
- paddr &= ~(VDMA_PAGESIZE - 1);
- while (pages > 0 && first < VDMA_PGTBL_ENTRIES) {
- if (pgtbl[first].owner != laddr) {
- if (vdma_debug)
- printk("Trying to remap other's pages.\n");
- return -EPERM; /* not owner */
- }
- pgtbl[first].frame = paddr;
- paddr += VDMA_PAGESIZE;
- first++;
- pages--;
- }
-
- /*
- * Update translation table
- */
- r4030_write_reg32(JAZZ_R4030_TRSTBL_INV, 0);
-
- if (vdma_debug > 2) {
- int i;
- pages = (((paddr & (VDMA_PAGESIZE - 1)) + size) >> 12) + 1;
- first = laddr >> 12;
- printk("LADDR: ");
- for (i = first; i < first + pages; i++)
- printk("%08x ", i << 12);
- printk("\nPADDR: ");
- for (i = first; i < first + pages; i++)
- printk("%08x ", pgtbl[i].frame);
- printk("\nOWNER: ");
- for (i = first; i < first + pages; i++)
- printk("%08x ", pgtbl[i].owner);
- printk("\n");
- }
-
- return 0;
-}
-
/*
* Translate a physical address to a logical address.
* This will return the logical address of the first
--
2.28.0
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next prev parent reply other threads:[~2020-09-08 16:48 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-08 16:47 dma-mapping cleanups Christoph Hellwig
2020-09-08 16:47 ` [PATCH 01/12] MIPS: make dma_sync_*_for_cpu a little less overzealous Christoph Hellwig
2020-09-08 16:47 ` Christoph Hellwig [this message]
2020-09-08 16:47 ` [PATCH 03/12] MIPS/jazzdma: decouple from dma-direct Christoph Hellwig
2020-09-08 16:47 ` [PATCH 04/12] dma-mapping: fix DMA_OPS dependencies Christoph Hellwig
2020-09-08 18:04 ` Sergei Shtylyov
2020-09-11 7:10 ` Christoph Hellwig
2020-09-10 12:55 ` Robin Murphy
2020-09-11 7:09 ` Christoph Hellwig
2020-09-08 16:47 ` [PATCH 05/12] dma-mapping: add (back) arch_dma_mark_clean for ia64 Christoph Hellwig
2020-09-08 16:47 ` [PATCH 06/12] dma-direct: remove dma_direct_{alloc,free}_pages Christoph Hellwig
2020-09-10 12:57 ` Robin Murphy
2020-09-08 16:47 ` [PATCH 07/12] dma-direct: lift gfp_t manipulation out of__dma_direct_alloc_pages Christoph Hellwig
2020-09-10 13:02 ` Robin Murphy
2020-09-08 16:47 ` [PATCH 08/12] dma-direct: use phys_to_dma_direct in dma_direct_alloc Christoph Hellwig
2020-09-10 13:03 ` Robin Murphy
2020-09-08 16:47 ` [PATCH 09/12] dma-direct: remove __dma_to_phys Christoph Hellwig
2020-09-10 13:26 ` Robin Murphy
2020-09-11 7:14 ` Christoph Hellwig
2020-09-08 16:47 ` [PATCH 10/12] dma-direct: rename and cleanup __phys_to_dma Christoph Hellwig
2020-09-10 13:30 ` Robin Murphy
2020-09-08 16:47 ` [PATCH 11/12] dma-mapping: move dma_common_{mmap, get_sgtable} out of mapping.c Christoph Hellwig
2020-09-10 13:34 ` Robin Murphy
2020-09-11 7:15 ` [PATCH 11/12] dma-mapping: move dma_common_{mmap,get_sgtable} " Christoph Hellwig
2020-09-08 16:47 ` [PATCH 12/12] dma-mapping: move the dma_declare_coherent_memory documentation Christoph Hellwig
2020-09-10 13:51 ` Robin Murphy
2020-09-11 7:17 ` Christoph Hellwig
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