[PATCH] synclink: update to use DMA mapping API

Update synclink to use DMA mapping API.  This removes warning about
isa_virt_to_bus() usage on architectures other than i386

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index 82c6abd..62aa0e5 100644 (file)
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -1,7 +1,7 @@
 /*
  * linux/drivers/char/synclink.c
  *
- * $Id: synclink.c,v 4.37 2005/09/07 13:13:19 paulkf Exp $
+ * $Id: synclink.c,v 4.38 2005/11/07 16:30:34 paulkf Exp $
  *
  * Device driver for Microgate SyncLink ISA and PCI
  * high speed multiprotocol serial adapters.
@@ -101,6 +101,7 @@
 #include <linux/termios.h>
 #include <linux/workqueue.h>
 #include <linux/hdlc.h>
+#include <linux/dma-mapping.h>
 
 #ifdef CONFIG_HDLC_MODULE
 #define CONFIG_HDLC 1
@@ -148,6 +149,7 @@ typedef struct _DMABUFFERENTRY
        u32 link;       /* 32-bit flat link to next buffer entry */
        char *virt_addr;        /* virtual address of data buffer */
        u32 phys_entry; /* physical address of this buffer entry */
+       dma_addr_t dma_addr;
 } DMABUFFERENTRY, *DMAPBUFFERENTRY;
 
 /* The queue of BH actions to be performed */
@@ -233,7 +235,8 @@ struct mgsl_struct {
        int ri_chkcount;
 
        char *buffer_list;              /* virtual address of Rx & Tx buffer lists */
-       unsigned long buffer_list_phys;
+       u32 buffer_list_phys;
+       dma_addr_t buffer_list_dma_addr;
 
        unsigned int rx_buffer_count;   /* count of total allocated Rx buffers */
        DMABUFFERENTRY *rx_buffer_list; /* list of receive buffer entries */
@@ -896,7 +899,7 @@ module_param_array(txdmabufs, int, NULL, 0);
 module_param_array(txholdbufs, int, NULL, 0);
 
 static char *driver_name = "SyncLink serial driver";
-static char *driver_version = "$Revision: 4.37 $";
+static char *driver_version = "$Revision: 4.38 $";
 
 static int synclink_init_one (struct pci_dev *dev,
                                     const struct pci_device_id *ent);
@@ -3811,11 +3814,10 @@ static int mgsl_alloc_buffer_list_memory( struct mgsl_struct *info )
                /* inspect portions of the buffer while other portions are being */
                /* updated by the adapter using Bus Master DMA. */
 
-               info->buffer_list = kmalloc(BUFFERLISTSIZE, GFP_KERNEL | GFP_DMA);
-               if ( info->buffer_list == NULL )
+               info->buffer_list = dma_alloc_coherent(NULL, BUFFERLISTSIZE, &info->buffer_list_dma_addr, GFP_KERNEL);
+               if (info->buffer_list == NULL)
                        return -ENOMEM;
-                       
-               info->buffer_list_phys = isa_virt_to_bus(info->buffer_list);
+               info->buffer_list_phys = (u32)(info->buffer_list_dma_addr);
        }
 
        /* We got the memory for the buffer entry lists. */
@@ -3882,8 +3884,8 @@ static int mgsl_alloc_buffer_list_memory( struct mgsl_struct *info )
  */
 static void mgsl_free_buffer_list_memory( struct mgsl_struct *info )
 {
-       if ( info->buffer_list && info->bus_type != MGSL_BUS_TYPE_PCI )
-               kfree(info->buffer_list);
+       if (info->buffer_list && info->bus_type != MGSL_BUS_TYPE_PCI)
+               dma_free_coherent(NULL, BUFFERLISTSIZE, info->buffer_list, info->buffer_list_dma_addr);
                
        info->buffer_list = NULL;
        info->rx_buffer_list = NULL;
@@ -3910,7 +3912,7 @@ static void mgsl_free_buffer_list_memory( struct mgsl_struct *info )
 static int mgsl_alloc_frame_memory(struct mgsl_struct *info,DMABUFFERENTRY *BufferList,int Buffercount)
 {
        int i;
-       unsigned long phys_addr;
+       u32 phys_addr;
 
        /* Allocate page sized buffers for the receive buffer list */
 
@@ -3922,11 +3924,10 @@ static int mgsl_alloc_frame_memory(struct mgsl_struct *info,DMABUFFERENTRY *Buff
                        info->last_mem_alloc += DMABUFFERSIZE;
                } else {
                        /* ISA adapter uses system memory. */
-                       BufferList[i].virt_addr = 
-                               kmalloc(DMABUFFERSIZE, GFP_KERNEL | GFP_DMA);
-                       if ( BufferList[i].virt_addr == NULL )
+                       BufferList[i].virt_addr = dma_alloc_coherent(NULL, DMABUFFERSIZE, &BufferList[i].dma_addr, GFP_KERNEL);
+                       if (BufferList[i].virt_addr == NULL)
                                return -ENOMEM;
-                       phys_addr = isa_virt_to_bus(BufferList[i].virt_addr);
+                       phys_addr = (u32)(BufferList[i].dma_addr);
                }
                BufferList[i].phys_addr = phys_addr;
        }
@@ -3957,7 +3958,7 @@ static void mgsl_free_frame_memory(struct mgsl_struct *info, DMABUFFERENTRY *Buf
                for ( i = 0 ; i < Buffercount ; i++ ) {
                        if ( BufferList[i].virt_addr ) {
                                if ( info->bus_type != MGSL_BUS_TYPE_PCI )
-                                       kfree(BufferList[i].virt_addr);
+                                       dma_free_coherent(NULL, DMABUFFERSIZE, BufferList[i].virt_addr, BufferList[i].dma_addr);
                                BufferList[i].virt_addr = NULL;
                        }
                }