* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 2001-2004 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2001-2005 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/types.h>
#include <linux/pci.h>
-#include <asm/sn/sn_sal.h>
+#include <asm/sn/addrs.h>
#include <asm/sn/geo.h>
+#include <asm/sn/pcibr_provider.h>
+#include <asm/sn/pcibus_provider_defs.h>
+#include <asm/sn/pcidev.h>
+#include <asm/sn/pic.h>
+#include <asm/sn/sn_sal.h>
+#include <asm/sn/tiocp.h>
+#include "tio.h"
#include "xtalk/xwidgetdev.h"
#include "xtalk/hubdev.h"
-#include "pci/pcibus_provider_defs.h"
-#include "pci/pcidev.h"
-#include "pci/tiocp.h"
-#include "pci/pic.h"
-#include "pci/pcibr_provider.h"
-#include "pci/tiocp.h"
-#include "tio.h"
-#include <asm/sn/addrs.h>
extern int sn_ioif_inited;
* we do not have to allocate entries in the PMU.
*/
-static uint64_t
+static dma_addr_t
pcibr_dmamap_ate32(struct pcidev_info *info,
- uint64_t paddr, size_t req_size, uint64_t flags)
+ u64 paddr, size_t req_size, u64 flags)
{
struct pcidev_info *pcidev_info = info->pdi_host_pcidev_info;
struct pcibus_info *pcibus_info = (struct pcibus_info *)pcidev_info->
pdi_pcibus_info;
- uint8_t internal_device = (PCI_SLOT(pcidev_info->pdi_host_pcidev_info->
+ u8 internal_device = (PCI_SLOT(pcidev_info->pdi_host_pcidev_info->
pdi_linux_pcidev->devfn)) - 1;
int ate_count;
int ate_index;
- uint64_t ate_flags = flags | PCI32_ATE_V;
- uint64_t ate;
- uint64_t pci_addr;
- uint64_t xio_addr;
- uint64_t offset;
+ u64 ate_flags = flags | PCI32_ATE_V;
+ u64 ate;
+ u64 pci_addr;
+ u64 xio_addr;
+ u64 offset;
/* PIC in PCI-X mode does not supports 32bit PageMap mode */
if (IS_PIC_SOFT(pcibus_info) && IS_PCIX(pcibus_info)) {
return pci_addr;
}
-static uint64_t
-pcibr_dmatrans_direct64(struct pcidev_info * info, uint64_t paddr,
- uint64_t dma_attributes)
+static dma_addr_t
+pcibr_dmatrans_direct64(struct pcidev_info * info, u64 paddr,
+ u64 dma_attributes)
{
struct pcibus_info *pcibus_info = (struct pcibus_info *)
((info->pdi_host_pcidev_info)->pdi_pcibus_info);
- uint64_t pci_addr;
+ u64 pci_addr;
/* Translate to Crosstalk View of Physical Address */
pci_addr = (IS_PIC_SOFT(pcibus_info) ? PHYS_TO_DMA(paddr) :
/* Handle Bridge Chipset differences */
if (IS_PIC_SOFT(pcibus_info)) {
pci_addr |=
- ((uint64_t) pcibus_info->
+ ((u64) pcibus_info->
pbi_hub_xid << PIC_PCI64_ATTR_TARG_SHFT);
} else
pci_addr |= TIOCP_PCI64_CMDTYPE_MEM;
pci_addr |= PCI64_ATTR_VIRTUAL;
return pci_addr;
-
}
-static uint64_t
+static dma_addr_t
pcibr_dmatrans_direct32(struct pcidev_info * info,
- uint64_t paddr, size_t req_size, uint64_t flags)
+ u64 paddr, size_t req_size, u64 flags)
{
-
struct pcidev_info *pcidev_info = info->pdi_host_pcidev_info;
struct pcibus_info *pcibus_info = (struct pcibus_info *)pcidev_info->
pdi_pcibus_info;
- uint64_t xio_addr;
+ u64 xio_addr;
- uint64_t xio_base;
- uint64_t offset;
- uint64_t endoff;
+ u64 xio_base;
+ u64 offset;
+ u64 endoff;
if (IS_PCIX(pcibus_info)) {
return 0;
}
return PCI32_DIRECT_BASE | offset;
-
}
/*
* DMA mappings for Direct 64 and 32 do not have any DMA maps.
*/
void
-pcibr_dma_unmap(struct pcidev_info *pcidev_info, dma_addr_t dma_handle,
- int direction)
+pcibr_dma_unmap(struct pci_dev *hwdev, dma_addr_t dma_handle, int direction)
{
- struct pcibus_info *pcibus_info = (struct pcibus_info *)pcidev_info->
- pdi_pcibus_info;
+ struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(hwdev);
+ struct pcibus_info *pcibus_info =
+ (struct pcibus_info *)pcidev_info->pdi_pcibus_info;
if (IS_PCI32_MAPPED(dma_handle)) {
int ate_index;
* unlike the PIC Device(x) Write Request Buffer Flush register.
*/
-void sn_dma_flush(uint64_t addr)
+void sn_dma_flush(u64 addr)
{
nasid_t nasid;
int is_tio;
int wid_num;
int i, j;
- int bwin;
- uint64_t flags;
+ unsigned long flags;
+ u64 itte;
struct hubdev_info *hubinfo;
- volatile struct sn_flush_device_list *p;
+ struct sn_flush_device_kernel *p;
+ struct sn_flush_device_common *common;
struct sn_flush_nasid_entry *flush_nasid_list;
if (!sn_ioif_inited)
if (!hubinfo) {
BUG();
}
- is_tio = (nasid & 1);
- if (is_tio) {
- wid_num = TIO_SWIN_WIDGETNUM(addr);
- bwin = TIO_BWIN_WINDOWNUM(addr);
- } else {
- wid_num = SWIN_WIDGETNUM(addr);
- bwin = BWIN_WINDOWNUM(addr);
- }
flush_nasid_list = &hubinfo->hdi_flush_nasid_list;
if (flush_nasid_list->widget_p == NULL)
return;
- if (bwin > 0) {
- uint64_t itte = flush_nasid_list->iio_itte[bwin];
- if (is_tio) {
- wid_num = (itte >> TIO_ITTE_WIDGET_SHIFT) &
- TIO_ITTE_WIDGET_MASK;
- } else {
- wid_num = (itte >> IIO_ITTE_WIDGET_SHIFT) &
- IIO_ITTE_WIDGET_MASK;
- }
+ is_tio = (nasid & 1);
+ if (is_tio) {
+ int itte_index;
+
+ if (TIO_HWIN(addr))
+ itte_index = 0;
+ else if (TIO_BWIN_WINDOWNUM(addr))
+ itte_index = TIO_BWIN_WINDOWNUM(addr);
+ else
+ itte_index = -1;
+
+ if (itte_index >= 0) {
+ itte = flush_nasid_list->iio_itte[itte_index];
+ if (! TIO_ITTE_VALID(itte))
+ return;
+ wid_num = TIO_ITTE_WIDGET(itte);
+ } else
+ wid_num = TIO_SWIN_WIDGETNUM(addr);
+ } else {
+ if (BWIN_WINDOWNUM(addr)) {
+ itte = flush_nasid_list->iio_itte[BWIN_WINDOWNUM(addr)];
+ wid_num = IIO_ITTE_WIDGET(itte);
+ } else
+ wid_num = SWIN_WIDGETNUM(addr);
}
- if (flush_nasid_list->widget_p == NULL)
- return;
if (flush_nasid_list->widget_p[wid_num] == NULL)
return;
p = &flush_nasid_list->widget_p[wid_num][0];
/* find a matching BAR */
- for (i = 0; i < DEV_PER_WIDGET; i++) {
+ for (i = 0; i < DEV_PER_WIDGET; i++,p++) {
+ common = p->common;
for (j = 0; j < PCI_ROM_RESOURCE; j++) {
- if (p->sfdl_bar_list[j].start == 0)
+ if (common->sfdl_bar_list[j].start == 0)
break;
- if (addr >= p->sfdl_bar_list[j].start
- && addr <= p->sfdl_bar_list[j].end)
+ if (addr >= common->sfdl_bar_list[j].start
+ && addr <= common->sfdl_bar_list[j].end)
break;
}
- if (j < PCI_ROM_RESOURCE && p->sfdl_bar_list[j].start != 0)
+ if (j < PCI_ROM_RESOURCE && common->sfdl_bar_list[j].start != 0)
break;
- p++;
}
/* if no matching BAR, return without doing anything. */
/*
* For TIOCP use the Device(x) Write Request Buffer Flush Bridge
* register since it ensures the data has entered the coherence
- * domain, unlike PIC
+ * domain, unlike PIC.
*/
if (is_tio) {
- uint32_t tio_id = REMOTE_HUB_L(nasid, TIO_NODE_ID);
- uint32_t revnum = XWIDGET_PART_REV_NUM(tio_id);
+ /*
+ * Note: devices behind TIOCE should never be matched in the
+ * above code, and so the following code is PIC/CP centric.
+ * If CE ever needs the sn_dma_flush mechanism, we will have
+ * to account for that here and in tioce_bus_fixup().
+ */
+ u32 tio_id = HUB_L(TIO_IOSPACE_ADDR(nasid, TIO_NODE_ID));
+ u32 revnum = XWIDGET_PART_REV_NUM(tio_id);
/* TIOCP BRINGUP WAR (PV907516): Don't write buffer flush reg */
if ((1 << XWIDGET_PART_REV_NUM_REV(revnum)) & PV907516) {
return;
} else {
- pcireg_wrb_flush_get(p->sfdl_pcibus_info,
- (p->sfdl_slot - 1));
+ pcireg_wrb_flush_get(common->sfdl_pcibus_info,
+ (common->sfdl_slot - 1));
}
} else {
- spin_lock_irqsave(&((struct sn_flush_device_list *)p)->
- sfdl_flush_lock, flags);
-
- p->sfdl_flush_value = 0;
+ spin_lock_irqsave(&p->sfdl_flush_lock, flags);
+ *common->sfdl_flush_addr = 0;
/* force an interrupt. */
- *(volatile uint32_t *)(p->sfdl_force_int_addr) = 1;
+ *(volatile u32 *)(common->sfdl_force_int_addr) = 1;
/* wait for the interrupt to come back. */
- while (*(p->sfdl_flush_addr) != 0x10f) ;
+ while (*(common->sfdl_flush_addr) != 0x10f)
+ cpu_relax();
/* okay, everything is synched up. */
- spin_unlock_irqrestore((spinlock_t *)&p->sfdl_flush_lock, flags);
+ spin_unlock_irqrestore(&p->sfdl_flush_lock, flags);
}
return;
}
/*
- * Wrapper DMA interface. Called from pci_dma.c routines.
+ * DMA interfaces. Called from pci_dma.c routines.
*/
-uint64_t
-pcibr_dma_map(struct pcidev_info * pcidev_info, unsigned long phys_addr,
- size_t size, unsigned int flags)
+dma_addr_t
+pcibr_dma_map(struct pci_dev * hwdev, unsigned long phys_addr, size_t size)
{
dma_addr_t dma_handle;
- struct pci_dev *pcidev = pcidev_info->pdi_linux_pcidev;
-
- if (flags & SN_PCIDMA_CONSISTENT) {
- /* sn_pci_alloc_consistent interfaces */
- if (pcidev->dev.coherent_dma_mask == ~0UL) {
- dma_handle =
- pcibr_dmatrans_direct64(pcidev_info, phys_addr,
- PCI64_ATTR_BAR);
- } else {
- dma_handle =
- (dma_addr_t) pcibr_dmamap_ate32(pcidev_info,
- phys_addr, size,
- PCI32_ATE_BAR);
- }
- } else {
- /* map_sg/map_single interfaces */
+ struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(hwdev);
- /* SN cannot support DMA addresses smaller than 32 bits. */
- if (pcidev->dma_mask < 0x7fffffff) {
- return 0;
- }
+ /* SN cannot support DMA addresses smaller than 32 bits. */
+ if (hwdev->dma_mask < 0x7fffffff) {
+ return 0;
+ }
- if (pcidev->dma_mask == ~0UL) {
+ if (hwdev->dma_mask == ~0UL) {
+ /*
+ * Handle the most common case: 64 bit cards. This
+ * call should always succeed.
+ */
+
+ dma_handle = pcibr_dmatrans_direct64(pcidev_info, phys_addr,
+ PCI64_ATTR_PREF);
+ } else {
+ /* Handle 32-63 bit cards via direct mapping */
+ dma_handle = pcibr_dmatrans_direct32(pcidev_info, phys_addr,
+ size, 0);
+ if (!dma_handle) {
/*
- * Handle the most common case: 64 bit cards. This
- * call should always succeed.
+ * It is a 32 bit card and we cannot do direct mapping,
+ * so we use an ATE.
*/
- dma_handle =
- pcibr_dmatrans_direct64(pcidev_info, phys_addr,
- PCI64_ATTR_PREF);
- } else {
- /* Handle 32-63 bit cards via direct mapping */
- dma_handle =
- pcibr_dmatrans_direct32(pcidev_info, phys_addr,
- size, 0);
- if (!dma_handle) {
- /*
- * It is a 32 bit card and we cannot do direct mapping,
- * so we use an ATE.
- */
-
- dma_handle =
- pcibr_dmamap_ate32(pcidev_info, phys_addr,
- size, PCI32_ATE_PREF);
- }
+ dma_handle = pcibr_dmamap_ate32(pcidev_info, phys_addr,
+ size, PCI32_ATE_PREF);
}
}
return dma_handle;
}
+dma_addr_t
+pcibr_dma_map_consistent(struct pci_dev * hwdev, unsigned long phys_addr,
+ size_t size)
+{
+ dma_addr_t dma_handle;
+ struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(hwdev);
+
+ if (hwdev->dev.coherent_dma_mask == ~0UL) {
+ dma_handle = pcibr_dmatrans_direct64(pcidev_info, phys_addr,
+ PCI64_ATTR_BAR);
+ } else {
+ dma_handle = (dma_addr_t) pcibr_dmamap_ate32(pcidev_info,
+ phys_addr, size,
+ PCI32_ATE_BAR);
+ }
+
+ return dma_handle;
+}
+
EXPORT_SYMBOL(sn_dma_flush);