[POWERPC] Remove iSeries_vio_dev
It was only being used to carry around dma_iommu_ops and vio_iommu_table
which we can use directly instead. This also means that vio_bus_device
doesn't need to refer to them either.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index fd631d4..eaf7f69 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -49,11 +49,8 @@
};
#ifdef CONFIG_PPC_ISERIES
-struct device *iSeries_vio_dev = &vio_bus_device.dev;
-EXPORT_SYMBOL(iSeries_vio_dev);
-
static struct iommu_table veth_iommu_table;
-static struct iommu_table vio_iommu_table;
+struct iommu_table vio_iommu_table;
static void __init iommu_vio_init(void)
{
@@ -66,8 +63,6 @@
printk("Virtual Bus VETH TCE table failed.\n");
if (!iommu_init_table(&vio_iommu_table, -1))
printk("Virtual Bus VIO TCE table failed.\n");
- vio_bus_device.dev.archdata.dma_ops = &dma_iommu_ops;
- vio_bus_device.dev.archdata.dma_data = &vio_iommu_table;
}
#else
static void __init iommu_vio_init(void)
diff --git a/arch/powerpc/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c
index 3b6a966..3281f10 100644
--- a/arch/powerpc/platforms/iseries/iommu.c
+++ b/arch/powerpc/platforms/iseries/iommu.c
@@ -28,6 +28,7 @@
#include <linux/dma-mapping.h>
#include <linux/list.h>
#include <linux/pci.h>
+#include <linux/module.h>
#include <asm/iommu.h>
#include <asm/tce.h>
@@ -36,6 +37,7 @@
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#include <asm/iseries/hv_call_xm.h>
+#include <asm/iseries/hv_call_event.h>
#include <asm/iseries/iommu.h>
static void tce_build_iSeries(struct iommu_table *tbl, long index, long npages,
@@ -189,6 +191,34 @@
}
#endif
+extern struct iommu_table vio_iommu_table;
+
+void *iseries_hv_alloc(size_t size, dma_addr_t *dma_handle, gfp_t flag)
+{
+ return iommu_alloc_coherent(&vio_iommu_table, size, dma_handle,
+ DMA_32BIT_MASK, flag, -1);
+}
+EXPORT_SYMBOL_GPL(iseries_hv_alloc);
+
+void iseries_hv_free(size_t size, void *vaddr, dma_addr_t dma_handle)
+{
+ iommu_free_coherent(&vio_iommu_table, size, vaddr, dma_handle);
+}
+EXPORT_SYMBOL_GPL(iseries_hv_free);
+
+dma_addr_t iseries_hv_map(void *vaddr, size_t size,
+ enum dma_data_direction direction)
+{
+ return iommu_map_single(&vio_iommu_table, vaddr, size,
+ DMA_32BIT_MASK, direction);
+}
+
+void iseries_hv_unmap(dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction direction)
+{
+ iommu_unmap_single(&vio_iommu_table, dma_handle, size, direction);
+}
+
void iommu_init_early_iSeries(void)
{
ppc_md.tce_build = tce_build_iSeries;
diff --git a/arch/powerpc/platforms/iseries/mf.c b/arch/powerpc/platforms/iseries/mf.c
index b1187d9..c0f2433 100644
--- a/arch/powerpc/platforms/iseries/mf.c
+++ b/arch/powerpc/platforms/iseries/mf.c
@@ -39,9 +39,9 @@
#include <asm/paca.h>
#include <asm/abs_addr.h>
#include <asm/firmware.h>
-#include <asm/iseries/vio.h>
#include <asm/iseries/mf.h>
#include <asm/iseries/hv_lp_config.h>
+#include <asm/iseries/hv_lp_event.h>
#include <asm/iseries/it_lp_queue.h>
#include "setup.h"
@@ -870,8 +870,7 @@
if ((off + count) > 256)
count = 256 - off;
- dma_addr = dma_map_single(iSeries_vio_dev, page, off + count,
- DMA_FROM_DEVICE);
+ dma_addr = iseries_hv_map(page, off + count, DMA_FROM_DEVICE);
if (dma_mapping_error(dma_addr))
return -ENOMEM;
memset(page, 0, off + count);
@@ -883,8 +882,7 @@
vsp_cmd.sub_data.kern.length = off + count;
mb();
rc = signal_vsp_instruction(&vsp_cmd);
- dma_unmap_single(iSeries_vio_dev, dma_addr, off + count,
- DMA_FROM_DEVICE);
+ iseries_hv_unmap(dma_addr, off + count, DMA_FROM_DEVICE);
if (rc)
return rc;
if (vsp_cmd.result_code != 0)
@@ -919,8 +917,7 @@
int len = *size;
dma_addr_t dma_addr;
- dma_addr = dma_map_single(iSeries_vio_dev, buffer, len,
- DMA_FROM_DEVICE);
+ dma_addr = iseries_hv_map(buffer, len, DMA_FROM_DEVICE);
memset(buffer, 0, len);
memset(&vsp_cmd, 0, sizeof(vsp_cmd));
vsp_cmd.cmd = 32;
@@ -938,7 +935,7 @@
rc = -ENOMEM;
}
- dma_unmap_single(iSeries_vio_dev, dma_addr, len, DMA_FROM_DEVICE);
+ iseries_hv_unmap(dma_addr, len, DMA_FROM_DEVICE);
return rc;
}
@@ -1149,8 +1146,7 @@
goto out;
dma_addr = 0;
- page = dma_alloc_coherent(iSeries_vio_dev, count, &dma_addr,
- GFP_ATOMIC);
+ page = iseries_hv_alloc(count, &dma_addr, GFP_ATOMIC);
ret = -ENOMEM;
if (page == NULL)
goto out;
@@ -1170,7 +1166,7 @@
ret = count;
out_free:
- dma_free_coherent(iSeries_vio_dev, count, page, dma_addr);
+ iseries_hv_free(count, page, dma_addr);
out:
return ret;
}
@@ -1190,8 +1186,7 @@
goto out;
dma_addr = 0;
- page = dma_alloc_coherent(iSeries_vio_dev, count, &dma_addr,
- GFP_ATOMIC);
+ page = iseries_hv_alloc(count, &dma_addr, GFP_ATOMIC);
rc = -ENOMEM;
if (page == NULL) {
printk(KERN_ERR "mf.c: couldn't allocate memory to set vmlinux chunk\n");
@@ -1219,7 +1214,7 @@
*ppos += count;
rc = count;
out_free:
- dma_free_coherent(iSeries_vio_dev, count, page, dma_addr);
+ iseries_hv_free(count, page, dma_addr);
out:
return rc;
}
diff --git a/arch/powerpc/platforms/iseries/viopath.c b/arch/powerpc/platforms/iseries/viopath.c
index 45f2fe3..df23331 100644
--- a/arch/powerpc/platforms/iseries/viopath.c
+++ b/arch/powerpc/platforms/iseries/viopath.c
@@ -124,8 +124,7 @@
if (!buf)
return 0;
- handle = dma_map_single(iSeries_vio_dev, buf, HW_PAGE_SIZE,
- DMA_FROM_DEVICE);
+ handle = iseries_hv_map(buf, HW_PAGE_SIZE, DMA_FROM_DEVICE);
hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
HvLpEvent_Type_VirtualIo,
@@ -146,8 +145,7 @@
buf[HW_PAGE_SIZE-1] = '\0';
seq_printf(m, "%s", buf);
- dma_unmap_single(iSeries_vio_dev, handle, HW_PAGE_SIZE,
- DMA_FROM_DEVICE);
+ iseries_hv_unmap(handle, HW_PAGE_SIZE, DMA_FROM_DEVICE);
kfree(buf);
seq_printf(m, "AVAILABLE_VETH=%x\n", vlanMap);
diff --git a/drivers/cdrom/viocd.c b/drivers/cdrom/viocd.c
index b88fdeb..c081e54 100644
--- a/drivers/cdrom/viocd.c
+++ b/drivers/cdrom/viocd.c
@@ -220,7 +220,7 @@
struct cdrom_info *viocd_unitinfo;
dma_addr_t unitinfo_dmaaddr;
- viocd_unitinfo = dma_alloc_coherent(iSeries_vio_dev,
+ viocd_unitinfo = iseries_hv_alloc(
sizeof(*viocd_unitinfo) * VIOCD_MAX_CD,
&unitinfo_dmaaddr, GFP_ATOMIC);
if (viocd_unitinfo == NULL) {
@@ -262,8 +262,7 @@
}
error_ret:
- dma_free_coherent(iSeries_vio_dev,
- sizeof(*viocd_unitinfo) * VIOCD_MAX_CD,
+ iseries_hv_free(sizeof(*viocd_unitinfo) * VIOCD_MAX_CD,
viocd_unitinfo, unitinfo_dmaaddr);
}
diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c
index e12275d..064c091 100644
--- a/drivers/char/viotape.c
+++ b/drivers/char/viotape.c
@@ -392,8 +392,8 @@
if (op == NULL)
return -ENOMEM;
- viotape_unitinfo = dma_alloc_coherent(iSeries_vio_dev, len,
- &viotape_unitinfo_token, GFP_ATOMIC);
+ viotape_unitinfo = iseries_hv_alloc(len, &viotape_unitinfo_token,
+ GFP_ATOMIC);
if (viotape_unitinfo == NULL) {
free_op_struct(op);
return -ENOMEM;
@@ -1103,8 +1103,7 @@
class_destroy(tape_class);
unregister_chrdev(VIOTAPE_MAJOR, "viotape");
if (viotape_unitinfo)
- dma_free_coherent(iSeries_vio_dev,
- sizeof(viotape_unitinfo[0]) * VIOTAPE_MAX_TAPE,
+ iseries_hv_free(sizeof(viotape_unitinfo[0]) * VIOTAPE_MAX_TAPE,
viotape_unitinfo, viotape_unitinfo_token);
viopath_close(viopath_hostLp, viomajorsubtype_tape, VIOTAPE_MAXREQ + 2);
vio_clearHandler(viomajorsubtype_tape);
diff --git a/include/asm-powerpc/iseries/hv_call_event.h b/include/asm-powerpc/iseries/hv_call_event.h
index 4cec476..cc029d3 100644
--- a/include/asm-powerpc/iseries/hv_call_event.h
+++ b/include/asm-powerpc/iseries/hv_call_event.h
@@ -21,6 +21,9 @@
#ifndef _ASM_POWERPC_ISERIES_HV_CALL_EVENT_H
#define _ASM_POWERPC_ISERIES_HV_CALL_EVENT_H
+#include <linux/types.h>
+#include <linux/dma-mapping.h>
+
#include <asm/iseries/hv_call_sc.h>
#include <asm/iseries/hv_types.h>
#include <asm/abs_addr.h>
@@ -113,6 +116,13 @@
eventData3, eventData4, eventData5);
}
+extern void *iseries_hv_alloc(size_t size, dma_addr_t *dma_handle, gfp_t flag);
+extern void iseries_hv_free(size_t size, void *vaddr, dma_addr_t dma_handle);
+extern dma_addr_t iseries_hv_map(void *vaddr, size_t size,
+ enum dma_data_direction direction);
+extern void iseries_hv_unmap(dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction direction);
+
static inline HvLpEvent_Rc HvCallEvent_ackLpEvent(struct HvLpEvent *event)
{
return HvCall1(HvCallEventAckLpEvent, virt_to_abs(event));
diff --git a/include/asm-powerpc/iseries/vio.h b/include/asm-powerpc/iseries/vio.h
index 7a95d29..5a5cd0f 100644
--- a/include/asm-powerpc/iseries/vio.h
+++ b/include/asm-powerpc/iseries/vio.h
@@ -150,8 +150,4 @@
viochar_rc_ebusy = 1
};
-struct device;
-
-extern struct device *iSeries_vio_dev;
-
#endif /* _ASM_POWERPC_ISERIES_VIO_H */