[22/50] Fix DAC960 driver on machines which dont support 64-bit DMA

Greg KH
2007-09-24T16:32:49Z

[-- Attachment #1: fix-dac960-driver-on-machines-which-don-t-support-64-bit-dma.patch --]
[-- Type: text/plain, Size: 2699 bytes --]

From: Matthew Wilcox <matthew@wil.cx>

commit 868047fcbb85dbb44ddd98c336fef83236a2c06a in mainline.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=8942

Use PCI_DMA_* constants instead of own private definitions Fall back to
32-bit DMA mask if a 64-bit one fails

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Acked-by: Jeff Garzik <jeff@garzik.org>
Tested-by: Lars <polynomial-c@gmx.de>
Cc: Alessandro Polverini <alex@nibbles.it>
Cc: <dac@conglom-o.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/block/DAC960.c | 17 ++++++++++-------
drivers/block/DAC960.h | 7 -------
2 files changed, 10 insertions(+), 14 deletions(-)

--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -17,8 +17,8 @@
*/

-#define DAC960_DriverVersion "2.5.48"
-#define DAC960_DriverDate "14 May 2006"
+#define DAC960_DriverVersion "2.5.49"
+#define DAC960_DriverDate "21 Aug 2007"

#include <linux/module.h>
@@ -1165,9 +1165,9 @@ static bool DAC960_V1_EnableMemoryMailbo
int i;

- if (pci_set_dma_mask(Controller->PCIDevice, DAC690_V1_PciDmaMask))
+ if (pci_set_dma_mask(Controller->PCIDevice, DMA_32BIT_MASK))
return DAC960_Failure(Controller, "DMA mask out of range");
- Controller->BounceBufferLimit = DAC690_V1_PciDmaMask;
+ Controller->BounceBufferLimit = DMA_32BIT_MASK;

if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller)) {
CommandMailboxesSize = 0;
@@ -1368,9 +1368,12 @@ static bool DAC960_V2_EnableMemoryMailbo
dma_addr_t CommandMailboxDMA;
DAC960_V2_CommandStatus_T CommandStatus;

- if (pci_set_dma_mask(Controller->PCIDevice, DAC690_V2_PciDmaMask))
- return DAC960_Failure(Controller, "DMA mask out of range");
- Controller->BounceBufferLimit = DAC690_V2_PciDmaMask;
+ if (!pci_set_dma_mask(Controller->PCIDevice, DMA_64BIT_MASK))
+ Controller->BounceBufferLimit = DMA_64BIT_MASK;
+ else if (!pci_set_dma_mask(Controller->PCIDevice, DMA_32BIT_MASK))
+ Controller->BounceBufferLimit = DMA_32BIT_MASK;
+ else
+ return DAC960_Failure(Controller, "DMA mask out of range");

/* This is a temporary dma mapping, used only in the scope of this function */
CommandMailbox = pci_alloc_consistent(PCI_Device,
--- a/drivers/block/DAC960.h
+++ b/drivers/block/DAC960.h
@@ -61,13 +61,6 @@
#define DAC960_V2_MaxPhysicalDevices 272

/*
- Define the pci dma mask supported by DAC960 V1 and V2 Firmware Controlers
- */
-
-#define DAC690_V1_PciDmaMask 0xffffffff
-#define DAC690_V2_PciDmaMask 0xffffffffffffffffULL
-
-/*
Define a 32/64 bit I/O Address data type.
*/

--