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-rw-r--r--arch/ia64/sn/kernel/io_init.c9
-rw-r--r--arch/ia64/sn/kernel/irq.c142
-rw-r--r--arch/ia64/sn/kernel/setup.c4
-rw-r--r--arch/ia64/sn/kernel/sn2/cache.c15
-rw-r--r--arch/ia64/sn/pci/pci_dma.c10
-rw-r--r--arch/ia64/sn/pci/pcibr/pcibr_dma.c62
-rw-r--r--arch/ia64/sn/pci/tioca_provider.c8
-rw-r--r--arch/ia64/sn/pci/tioce_provider.c65
8 files changed, 198 insertions, 117 deletions
diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 5101ac4..dc09a6a 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -58,7 +58,7 @@ static int max_pcibus_number = 255; /* Default highest pci bus number */
*/
static dma_addr_t
-sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size)
+sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size, int type)
{
return 0;
}
@@ -457,13 +457,6 @@ void sn_pci_fixup_slot(struct pci_dev *dev)
pcidev_info->pdi_sn_irq_info = NULL;
kfree(sn_irq_info);
}
-
- /*
- * MSI currently not supported on altix. Remove this when
- * the MSI abstraction patches are integrated into the kernel
- * (sometime after 2.6.16 releases)
- */
- dev->no_msi = 1;
}
/*
diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index c265e02..dc8e2b6 100644
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -26,11 +26,11 @@ static void unregister_intr_pda(struct sn_irq_info *sn_irq_info);
int sn_force_interrupt_flag = 1;
extern int sn_ioif_inited;
-static struct list_head **sn_irq_lh;
+struct list_head **sn_irq_lh;
static spinlock_t sn_irq_info_lock = SPIN_LOCK_UNLOCKED; /* non-IRQ lock */
-static inline u64 sn_intr_alloc(nasid_t local_nasid, int local_widget,
- u64 sn_irq_info,
+u64 sn_intr_alloc(nasid_t local_nasid, int local_widget,
+ struct sn_irq_info *sn_irq_info,
int req_irq, nasid_t req_nasid,
int req_slice)
{
@@ -40,12 +40,13 @@ static inline u64 sn_intr_alloc(nasid_t local_nasid, int local_widget,
SAL_CALL_NOLOCK(ret_stuff, (u64) SN_SAL_IOIF_INTERRUPT,
(u64) SAL_INTR_ALLOC, (u64) local_nasid,
- (u64) local_widget, (u64) sn_irq_info, (u64) req_irq,
+ (u64) local_widget, __pa(sn_irq_info), (u64) req_irq,
(u64) req_nasid, (u64) req_slice);
+
return ret_stuff.status;
}
-static inline void sn_intr_free(nasid_t local_nasid, int local_widget,
+void sn_intr_free(nasid_t local_nasid, int local_widget,
struct sn_irq_info *sn_irq_info)
{
struct ia64_sal_retval ret_stuff;
@@ -112,73 +113,91 @@ static void sn_end_irq(unsigned int irq)
static void sn_irq_info_free(struct rcu_head *head);
-static void sn_set_affinity_irq(unsigned int irq, cpumask_t mask)
+struct sn_irq_info *sn_retarget_vector(struct sn_irq_info *sn_irq_info,
+ nasid_t nasid, int slice)
{
- struct sn_irq_info *sn_irq_info, *sn_irq_info_safe;
- int cpuid, cpuphys;
+ int vector;
+ int cpuphys;
+ int64_t bridge;
+ int local_widget, status;
+ nasid_t local_nasid;
+ struct sn_irq_info *new_irq_info;
+ struct sn_pcibus_provider *pci_provider;
- cpuid = first_cpu(mask);
- cpuphys = cpu_physical_id(cpuid);
+ new_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_ATOMIC);
+ if (new_irq_info == NULL)
+ return NULL;
- list_for_each_entry_safe(sn_irq_info, sn_irq_info_safe,
- sn_irq_lh[irq], list) {
- u64 bridge;
- int local_widget, status;
- nasid_t local_nasid;
- struct sn_irq_info *new_irq_info;
- struct sn_pcibus_provider *pci_provider;
-
- new_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_ATOMIC);
- if (new_irq_info == NULL)
- break;
- memcpy(new_irq_info, sn_irq_info, sizeof(struct sn_irq_info));
-
- bridge = (u64) new_irq_info->irq_bridge;
- if (!bridge) {
- kfree(new_irq_info);
- break; /* irq is not a device interrupt */
- }
+ memcpy(new_irq_info, sn_irq_info, sizeof(struct sn_irq_info));
+
+ bridge = (u64) new_irq_info->irq_bridge;
+ if (!bridge) {
+ kfree(new_irq_info);
+ return NULL; /* irq is not a device interrupt */
+ }
- local_nasid = NASID_GET(bridge);
+ local_nasid = NASID_GET(bridge);
- if (local_nasid & 1)
- local_widget = TIO_SWIN_WIDGETNUM(bridge);
- else
- local_widget = SWIN_WIDGETNUM(bridge);
+ if (local_nasid & 1)
+ local_widget = TIO_SWIN_WIDGETNUM(bridge);
+ else
+ local_widget = SWIN_WIDGETNUM(bridge);
- /* Free the old PROM new_irq_info structure */
- sn_intr_free(local_nasid, local_widget, new_irq_info);
- /* Update kernels new_irq_info with new target info */
- unregister_intr_pda(new_irq_info);
+ vector = sn_irq_info->irq_irq;
+ /* Free the old PROM new_irq_info structure */
+ sn_intr_free(local_nasid, local_widget, new_irq_info);
+ /* Update kernels new_irq_info with new target info */
+ unregister_intr_pda(new_irq_info);
- /* allocate a new PROM new_irq_info struct */
- status = sn_intr_alloc(local_nasid, local_widget,
- __pa(new_irq_info), irq,
- cpuid_to_nasid(cpuid),
- cpuid_to_slice(cpuid));
+ /* allocate a new PROM new_irq_info struct */
+ status = sn_intr_alloc(local_nasid, local_widget,
+ new_irq_info, vector,
+ nasid, slice);
- /* SAL call failed */
- if (status) {
- kfree(new_irq_info);
- break;
- }
+ /* SAL call failed */
+ if (status) {
+ kfree(new_irq_info);
+ return NULL;
+ }
- new_irq_info->irq_cpuid = cpuid;
- register_intr_pda(new_irq_info);
+ cpuphys = nasid_slice_to_cpuid(nasid, slice);
+ new_irq_info->irq_cpuid = cpuphys;
+ register_intr_pda(new_irq_info);
- pci_provider = sn_pci_provider[new_irq_info->irq_bridge_type];
- if (pci_provider && pci_provider->target_interrupt)
- (pci_provider->target_interrupt)(new_irq_info);
+ pci_provider = sn_pci_provider[new_irq_info->irq_bridge_type];
- spin_lock(&sn_irq_info_lock);
- list_replace_rcu(&sn_irq_info->list, &new_irq_info->list);
- spin_unlock(&sn_irq_info_lock);
- call_rcu(&sn_irq_info->rcu, sn_irq_info_free);
+ /*
+ * If this represents a line interrupt, target it. If it's
+ * an msi (irq_int_bit < 0), it's already targeted.
+ */
+ if (new_irq_info->irq_int_bit >= 0 &&
+ pci_provider && pci_provider->target_interrupt)
+ (pci_provider->target_interrupt)(new_irq_info);
+
+ spin_lock(&sn_irq_info_lock);
+ list_replace_rcu(&sn_irq_info->list, &new_irq_info->list);
+ spin_unlock(&sn_irq_info_lock);
+ call_rcu(&sn_irq_info->rcu, sn_irq_info_free);
#ifdef CONFIG_SMP
- set_irq_affinity_info((irq & 0xff), cpuphys, 0);
+ set_irq_affinity_info((vector & 0xff), cpuphys, 0);
#endif
- }
+
+ return new_irq_info;
+}
+
+static void sn_set_affinity_irq(unsigned int irq, cpumask_t mask)
+{
+ struct sn_irq_info *sn_irq_info, *sn_irq_info_safe;
+ nasid_t nasid;
+ int slice;
+
+ nasid = cpuid_to_nasid(first_cpu(mask));
+ slice = cpuid_to_slice(first_cpu(mask));
+
+ list_for_each_entry_safe(sn_irq_info, sn_irq_info_safe,
+ sn_irq_lh[irq], list)
+ (void)sn_retarget_vector(sn_irq_info, nasid, slice);
}
struct hw_interrupt_type irq_type_sn = {
@@ -202,6 +221,9 @@ void sn_irq_init(void)
int i;
irq_desc_t *base_desc = irq_desc;
+ ia64_first_device_vector = IA64_SN2_FIRST_DEVICE_VECTOR;
+ ia64_last_device_vector = IA64_SN2_LAST_DEVICE_VECTOR;
+
for (i = 0; i < NR_IRQS; i++) {
if (base_desc[i].handler == &no_irq_type) {
base_desc[i].handler = &irq_type_sn;
@@ -285,6 +307,7 @@ void sn_irq_fixup(struct pci_dev *pci_dev, struct sn_irq_info *sn_irq_info)
/* link it into the sn_irq[irq] list */
spin_lock(&sn_irq_info_lock);
list_add_rcu(&sn_irq_info->list, sn_irq_lh[sn_irq_info->irq_irq]);
+ reserve_irq_vector(sn_irq_info->irq_irq);
spin_unlock(&sn_irq_info_lock);
register_intr_pda(sn_irq_info);
@@ -310,8 +333,11 @@ void sn_irq_unfixup(struct pci_dev *pci_dev)
spin_lock(&sn_irq_info_lock);
list_del_rcu(&sn_irq_info->list);
spin_unlock(&sn_irq_info_lock);
+ if (list_empty(sn_irq_lh[sn_irq_info->irq_irq]))
+ free_irq_vector(sn_irq_info->irq_irq);
call_rcu(&sn_irq_info->rcu, sn_irq_info_free);
pci_dev_put(pci_dev);
+
}
static inline void
diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index 30988df..93577ab 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -139,7 +139,7 @@ static int __init pxm_to_nasid(int pxm)
int i;
int nid;
- nid = pxm_to_nid_map[pxm];
+ nid = pxm_to_node(pxm);
for (i = 0; i < num_node_memblks; i++) {
if (node_memblk[i].nid == nid) {
return NASID_GET(node_memblk[i].start_paddr);
@@ -704,7 +704,7 @@ void __init build_cnode_tables(void)
* cnode == node for all C & M bricks.
*/
for_each_online_node(node) {
- nasid = pxm_to_nasid(nid_to_pxm_map[node]);
+ nasid = pxm_to_nasid(node_to_pxm(node));
sn_cnodeid_to_nasid[node] = nasid;
physical_node_map[nasid] = node;
}
diff --git a/arch/ia64/sn/kernel/sn2/cache.c b/arch/ia64/sn/kernel/sn2/cache.c
index bc3cfa1..2862cb3 100644
--- a/arch/ia64/sn/kernel/sn2/cache.c
+++ b/arch/ia64/sn/kernel/sn2/cache.c
@@ -3,11 +3,12 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 2001-2003 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2001-2003, 2006 Silicon Graphics, Inc. All rights reserved.
*
*/
#include <linux/module.h>
#include <asm/pgalloc.h>
+#include <asm/sn/arch.h>
/**
* sn_flush_all_caches - flush a range of address from all caches (incl. L4)
@@ -17,18 +18,24 @@
* Flush a range of addresses from all caches including L4.
* All addresses fully or partially contained within
* @flush_addr to @flush_addr + @bytes are flushed
- * from the all caches.
+ * from all caches.
*/
void
sn_flush_all_caches(long flush_addr, long bytes)
{
- flush_icache_range(flush_addr, flush_addr+bytes);
+ unsigned long addr = flush_addr;
+
+ /* SHub1 requires a cached address */
+ if (is_shub1() && (addr & RGN_BITS) == RGN_BASE(RGN_UNCACHED))
+ addr = (addr - RGN_BASE(RGN_UNCACHED)) + RGN_BASE(RGN_KERNEL);
+
+ flush_icache_range(addr, addr + bytes);
/*
* The last call may have returned before the caches
* were actually flushed, so we call it again to make
* sure.
*/
- flush_icache_range(flush_addr, flush_addr+bytes);
+ flush_icache_range(addr, addr + bytes);
mb();
}
EXPORT_SYMBOL(sn_flush_all_caches);
diff --git a/arch/ia64/sn/pci/pci_dma.c b/arch/ia64/sn/pci/pci_dma.c
index b4b84c2..7a291a2 100644
--- a/arch/ia64/sn/pci/pci_dma.c
+++ b/arch/ia64/sn/pci/pci_dma.c
@@ -11,7 +11,7 @@
#include <linux/module.h>
#include <asm/dma.h>
-#include <asm/sn/pcibr_provider.h>
+#include <asm/sn/intr.h>
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
#include <asm/sn/sn_sal.h>
@@ -113,7 +113,8 @@ void *sn_dma_alloc_coherent(struct device *dev, size_t size,
* resources.
*/
- *dma_handle = provider->dma_map_consistent(pdev, phys_addr, size);
+ *dma_handle = provider->dma_map_consistent(pdev, phys_addr, size,
+ SN_DMA_ADDR_PHYS);
if (!*dma_handle) {
printk(KERN_ERR "%s: out of ATEs\n", __FUNCTION__);
free_pages((unsigned long)cpuaddr, get_order(size));
@@ -176,7 +177,7 @@ dma_addr_t sn_dma_map_single(struct device *dev, void *cpu_addr, size_t size,
BUG_ON(dev->bus != &pci_bus_type);
phys_addr = __pa(cpu_addr);
- dma_addr = provider->dma_map(pdev, phys_addr, size);
+ dma_addr = provider->dma_map(pdev, phys_addr, size, SN_DMA_ADDR_PHYS);
if (!dma_addr) {
printk(KERN_ERR "%s: out of ATEs\n", __FUNCTION__);
return 0;
@@ -260,7 +261,8 @@ int sn_dma_map_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
for (i = 0; i < nhwentries; i++, sg++) {
phys_addr = SG_ENT_PHYS_ADDRESS(sg);
sg->dma_address = provider->dma_map(pdev,
- phys_addr, sg->length);
+ phys_addr, sg->length,
+ SN_DMA_ADDR_PHYS);
if (!sg->dma_address) {
printk(KERN_ERR "%s: out of ATEs\n", __FUNCTION__);
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_dma.c b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
index 9f86bb6..a86c7b9 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_dma.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
@@ -41,7 +41,7 @@ extern int sn_ioif_inited;
static dma_addr_t
pcibr_dmamap_ate32(struct pcidev_info *info,
- u64 paddr, size_t req_size, u64 flags)
+ u64 paddr, size_t req_size, u64 flags, int dma_flags)
{
struct pcidev_info *pcidev_info = info->pdi_host_pcidev_info;
@@ -81,9 +81,12 @@ pcibr_dmamap_ate32(struct pcidev_info *info,
if (IS_PCIX(pcibus_info))
ate_flags &= ~(PCI32_ATE_PREF);
- xio_addr =
- IS_PIC_SOFT(pcibus_info) ? PHYS_TO_DMA(paddr) :
- PHYS_TO_TIODMA(paddr);
+ if (SN_DMA_ADDRTYPE(dma_flags == SN_DMA_ADDR_PHYS))
+ xio_addr = IS_PIC_SOFT(pcibus_info) ? PHYS_TO_DMA(paddr) :
+ PHYS_TO_TIODMA(paddr);
+ else
+ xio_addr = paddr;
+
offset = IOPGOFF(xio_addr);
ate = ate_flags | (xio_addr - offset);
@@ -91,6 +94,13 @@ pcibr_dmamap_ate32(struct pcidev_info *info,
if (IS_PIC_SOFT(pcibus_info)) {
ate |= (pcibus_info->pbi_hub_xid << PIC_ATE_TARGETID_SHFT);
}
+
+ /*
+ * If we're mapping for MSI, set the MSI bit in the ATE
+ */
+ if (dma_flags & SN_DMA_MSI)
+ ate |= PCI32_ATE_MSI;
+
ate_write(pcibus_info, ate_index, ate_count, ate);
/*
@@ -105,20 +115,27 @@ pcibr_dmamap_ate32(struct pcidev_info *info,
if (pcibus_info->pbi_devreg[internal_device] & PCIBR_DEV_SWAP_DIR)
ATE_SWAP_ON(pci_addr);
+
return pci_addr;
}
static dma_addr_t
pcibr_dmatrans_direct64(struct pcidev_info * info, u64 paddr,
- u64 dma_attributes)
+ u64 dma_attributes, int dma_flags)
{
struct pcibus_info *pcibus_info = (struct pcibus_info *)
((info->pdi_host_pcidev_info)->pdi_pcibus_info);
u64 pci_addr;
/* Translate to Crosstalk View of Physical Address */
- pci_addr = (IS_PIC_SOFT(pcibus_info) ? PHYS_TO_DMA(paddr) :
- PHYS_TO_TIODMA(paddr)) | dma_attributes;
+ if (SN_DMA_ADDRTYPE(dma_flags) == SN_DMA_ADDR_PHYS)
+ pci_addr = IS_PIC_SOFT(pcibus_info) ?
+ PHYS_TO_DMA(paddr) :
+ PHYS_TO_TIODMA(paddr) | dma_attributes;
+ else
+ pci_addr = IS_PIC_SOFT(pcibus_info) ?
+ paddr :
+ paddr | dma_attributes;
/* Handle Bus mode */
if (IS_PCIX(pcibus_info))
@@ -130,7 +147,9 @@ pcibr_dmatrans_direct64(struct pcidev_info * info, u64 paddr,
((u64) pcibus_info->
pbi_hub_xid << PIC_PCI64_ATTR_TARG_SHFT);
} else
- pci_addr |= TIOCP_PCI64_CMDTYPE_MEM;
+ pci_addr |= (dma_flags & SN_DMA_MSI) ?
+ TIOCP_PCI64_CMDTYPE_MSI :
+ TIOCP_PCI64_CMDTYPE_MEM;
/* If PCI mode, func zero uses VCHAN0, every other func uses VCHAN1 */
if (!IS_PCIX(pcibus_info) && PCI_FUNC(info->pdi_linux_pcidev->devfn))
@@ -141,7 +160,7 @@ pcibr_dmatrans_direct64(struct pcidev_info * info, u64 paddr,
static dma_addr_t
pcibr_dmatrans_direct32(struct pcidev_info * info,
- u64 paddr, size_t req_size, u64 flags)
+ u64 paddr, size_t req_size, u64 flags, int dma_flags)
{
struct pcidev_info *pcidev_info = info->pdi_host_pcidev_info;
struct pcibus_info *pcibus_info = (struct pcibus_info *)pcidev_info->
@@ -156,8 +175,14 @@ pcibr_dmatrans_direct32(struct pcidev_info * info,
return 0;
}
- xio_addr = IS_PIC_SOFT(pcibus_info) ? PHYS_TO_DMA(paddr) :
- PHYS_TO_TIODMA(paddr);
+ if (dma_flags & SN_DMA_MSI)
+ return 0;
+
+ if (SN_DMA_ADDRTYPE(dma_flags) == SN_DMA_ADDR_PHYS)
+ xio_addr = IS_PIC_SOFT(pcibus_info) ? PHYS_TO_DMA(paddr) :
+ PHYS_TO_TIODMA(paddr);
+ else
+ xio_addr = paddr;
xio_base = pcibus_info->pbi_dir_xbase;
offset = xio_addr - xio_base;
@@ -327,7 +352,7 @@ void sn_dma_flush(u64 addr)
*/
dma_addr_t
-pcibr_dma_map(struct pci_dev * hwdev, unsigned long phys_addr, size_t size)
+pcibr_dma_map(struct pci_dev * hwdev, unsigned long phys_addr, size_t size, int dma_flags)
{
dma_addr_t dma_handle;
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(hwdev);
@@ -344,11 +369,11 @@ pcibr_dma_map(struct pci_dev * hwdev, unsigned long phys_addr, size_t size)
*/
dma_handle = pcibr_dmatrans_direct64(pcidev_info, phys_addr,
- PCI64_ATTR_PREF);
+ PCI64_ATTR_PREF, dma_flags);
} else {
/* Handle 32-63 bit cards via direct mapping */
dma_handle = pcibr_dmatrans_direct32(pcidev_info, phys_addr,
- size, 0);
+ size, 0, dma_flags);
if (!dma_handle) {
/*
* It is a 32 bit card and we cannot do direct mapping,
@@ -356,7 +381,8 @@ pcibr_dma_map(struct pci_dev * hwdev, unsigned long phys_addr, size_t size)
*/
dma_handle = pcibr_dmamap_ate32(pcidev_info, phys_addr,
- size, PCI32_ATE_PREF);
+ size, PCI32_ATE_PREF,
+ dma_flags);
}
}
@@ -365,18 +391,18 @@ pcibr_dma_map(struct pci_dev * hwdev, unsigned long phys_addr, size_t size)
dma_addr_t
pcibr_dma_map_consistent(struct pci_dev * hwdev, unsigned long phys_addr,
- size_t size)
+ size_t size, int dma_flags)
{
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);
+ PCI64_ATTR_BAR, dma_flags);
} else {
dma_handle = (dma_addr_t) pcibr_dmamap_ate32(pcidev_info,
phys_addr, size,
- PCI32_ATE_BAR);
+ PCI32_ATE_BAR, dma_flags);
}
return dma_handle;
diff --git a/arch/ia64/sn/pci/tioca_provider.c b/arch/ia64/sn/pci/tioca_provider.c
index be01769..20de727 100644
--- a/arch/ia64/sn/pci/tioca_provider.c
+++ b/arch/ia64/sn/pci/tioca_provider.c
@@ -515,11 +515,17 @@ tioca_dma_unmap(struct pci_dev *pdev, dma_addr_t bus_addr, int dir)
* use the GART mapped mode.
*/
static u64
-tioca_dma_map(struct pci_dev *pdev, u64 paddr, size_t byte_count)
+tioca_dma_map(struct pci_dev *pdev, u64 paddr, size_t byte_count, int dma_flags)
{
u64 mapaddr;
/*
+ * Not supported for now ...
+ */
+ if (dma_flags & SN_DMA_MSI)
+ return 0;
+
+ /*
* If card is 64 or 48 bit addresable, use a direct mapping. 32
* bit direct is so restrictive w.r.t. where the memory resides that
* we don't use it even though CA has some support.
diff --git a/arch/ia64/sn/pci/tioce_provider.c b/arch/ia64/sn/pci/tioce_provider.c
index 85f3b3d..2d79485 100644
--- a/arch/ia64/sn/pci/tioce_provider.c
+++ b/arch/ia64/sn/pci/tioce_provider.c
@@ -170,7 +170,8 @@ tioce_mmr_war_post(struct tioce_kernel *kern, void *mmr_addr)
(ATE_PAGE((start)+(len)-1, pagesize) - ATE_PAGE(start, pagesize) + 1)
#define ATE_VALID(ate) ((ate) & (1UL << 63))
-#define ATE_MAKE(addr, ps) (((addr) & ~ATE_PAGEMASK(ps)) | (1UL << 63))
+#define ATE_MAKE(addr, ps, msi) \
+ (((addr) & ~ATE_PAGEMASK(ps)) | (1UL << 63) | ((msi)?(1UL << 62):0))
/*
* Flavors of ate-based mapping supported by tioce_alloc_map()
@@ -196,15 +197,17 @@ tioce_mmr_war_post(struct tioce_kernel *kern, void *mmr_addr)
*
* 63 - must be 1 to indicate d64 mode to CE hardware
* 62 - barrier bit ... controlled with tioce_dma_barrier()
- * 61 - 0 since this is not an MSI transaction
+ * 61 - msi bit ... specified through dma_flags
* 60:54 - reserved, MBZ
*/
static u64
-tioce_dma_d64(unsigned long ct_addr)
+tioce_dma_d64(unsigned long ct_addr, int dma_flags)
{
u64 bus_addr;
bus_addr = ct_addr | (1UL << 63);
+ if (dma_flags & SN_DMA_MSI)
+ bus_addr |= (1UL << 61);
return bus_addr;
}
@@ -261,7 +264,7 @@ pcidev_to_tioce(struct pci_dev *pdev, struct tioce **base,
*/
static u64
tioce_alloc_map(struct tioce_kernel *ce_kern, int type, int port,
- u64 ct_addr, int len)
+ u64 ct_addr, int len, int dma_flags)
{
int i;
int j;
@@ -270,6 +273,7 @@ tioce_alloc_map(struct tioce_kernel *ce_kern, int type, int port,
int entries;
int nates;
u64 pagesize;
+ int msi_capable, msi_wanted;
u64 *ate_shadow;
u64 *ate_reg;
u64 addr;
@@ -291,6 +295,7 @@ tioce_alloc_map(struct tioce_kernel *ce_kern, int type, int port,
ate_reg = ce_mmr->ce_ure_ate3240;
pagesize = ce_kern->ce_ate3240_pagesize;
bus_base = TIOCE_M32_MIN;
+ msi_capable = 1;
break;
case TIOCE_ATE_M40:
first = 0;
@@ -299,6 +304,7 @@ tioce_alloc_map(struct tioce_kernel *ce_kern, int type, int port,
ate_reg = ce_mmr->ce_ure_ate40;
pagesize = MB(64);
bus_base = TIOCE_M40_MIN;
+ msi_capable = 0;
break;
case TIOCE_ATE_M40S:
/*
@@ -311,11 +317,16 @@ tioce_alloc_map(struct tioce_kernel *ce_kern, int type, int port,
ate_reg = ce_mmr->ce_ure_ate3240;
pagesize = GB(16);
bus_base = TIOCE_M40S_MIN;
+ msi_capable = 0;
break;
default:
return 0;
}
+ msi_wanted = dma_flags & SN_DMA_MSI;
+ if (msi_wanted && !msi_capable)
+ return 0;
+
nates = ATE_NPAGES(ct_addr, len, pagesize);
if (nates > entries)
return 0;
@@ -344,7 +355,7 @@ tioce_alloc_map(struct tioce_kernel *ce_kern, int type, int port,
for (j = 0; j < nates; j++) {
u64 ate;
- ate = ATE_MAKE(addr, pagesize);
+ ate = ATE_MAKE(addr, pagesize, msi_wanted);
ate_shadow[i + j] = ate;
tioce_mmr_storei(ce_kern, &ate_reg[i + j], ate);
addr += pagesize;
@@ -371,7 +382,7 @@ tioce_alloc_map(struct tioce_kernel *ce_kern, int type, int port,
* Map @paddr into 32-bit bus space of the CE associated with @pcidev_info.
*/
static u64
-tioce_dma_d32(struct pci_dev *pdev, u64 ct_addr)
+tioce_dma_d32(struct pci_dev *pdev, u64 ct_addr, int dma_flags)
{
int dma_ok;
int port;
@@ -381,6 +392,9 @@ tioce_dma_d32(struct pci_dev *pdev, u64 ct_addr)
u64 ct_lower;
dma_addr_t bus_addr;
+ if (dma_flags & SN_DMA_MSI)
+ return 0;
+
ct_upper = ct_addr & ~0x3fffffffUL;
ct_lower = ct_addr & 0x3fffffffUL;
@@ -507,7 +521,7 @@ tioce_dma_unmap(struct pci_dev *pdev, dma_addr_t bus_addr, int dir)
*/
static u64
tioce_do_dma_map(struct pci_dev *pdev, u64 paddr, size_t byte_count,
- int barrier)
+ int barrier, int dma_flags)
{
unsigned long flags;
u64 ct_addr;
@@ -523,15 +537,18 @@ tioce_do_dma_map(struct pci_dev *pdev, u64 paddr, size_t byte_count,
if (dma_mask < 0x7fffffffUL)
return 0;
- ct_addr = PHYS_TO_TIODMA(paddr);
+ if (SN_DMA_ADDRTYPE(dma_flags) == SN_DMA_ADDR_PHYS)
+ ct_addr = PHYS_TO_TIODMA(paddr);
+ else
+ ct_addr = paddr;
/*
* If the device can generate 64 bit addresses, create a D64 map.
- * Since this should never fail, bypass the rest of the checks.
*/
if (dma_mask == ~0UL) {
- mapaddr = tioce_dma_d64(ct_addr);
- goto dma_map_done;
+ mapaddr = tioce_dma_d64(ct_addr, dma_flags);
+ if (mapaddr)
+ goto dma_map_done;
}
pcidev_to_tioce(pdev, NULL, &ce_kern, &port);
@@ -574,18 +591,22 @@ tioce_do_dma_map(struct pci_dev *pdev, u64 paddr, size_t byte_count,
if (byte_count > MB(64)) {
mapaddr = tioce_alloc_map(ce_kern, TIOCE_ATE_M40S,
- port, ct_addr, byte_count);
+ port, ct_addr, byte_count,
+ dma_flags);
if (!mapaddr)
mapaddr =
tioce_alloc_map(ce_kern, TIOCE_ATE_M40, -1,
- ct_addr, byte_count);
+ ct_addr, byte_count,
+ dma_flags);
} else {
mapaddr = tioce_alloc_map(ce_kern, TIOCE_ATE_M40, -1,
- ct_addr, byte_count);
+ ct_addr, byte_count,
+ dma_flags);
if (!mapaddr)
mapaddr =
tioce_alloc_map(ce_kern, TIOCE_ATE_M40S,
- port, ct_addr, byte_count);
+ port, ct_addr, byte_count,
+ dma_flags);
}
}
@@ -593,7 +614,7 @@ tioce_do_dma_map(struct pci_dev *pdev, u64 paddr, size_t byte_count,
* 32-bit direct is the next mode to try
*/
if (!mapaddr && dma_mask >= 0xffffffffUL)
- mapaddr = tioce_dma_d32(pdev, ct_addr);
+ mapaddr = tioce_dma_d32(pdev, ct_addr, dma_flags);
/*
* Last resort, try 32-bit ATE-based map.
@@ -601,7 +622,7 @@ tioce_do_dma_map(struct pci_dev *pdev, u64 paddr, size_t byte_count,
if (!mapaddr)
mapaddr =
tioce_alloc_map(ce_kern, TIOCE_ATE_M32, -1, ct_addr,
- byte_count);
+ byte_count, dma_flags);
spin_unlock_irqrestore(&ce_kern->ce_lock, flags);
@@ -622,9 +643,9 @@ dma_map_done:
* in the address.
*/
static u64
-tioce_dma(struct pci_dev *pdev, u64 paddr, size_t byte_count)
+tioce_dma(struct pci_dev *pdev, u64 paddr, size_t byte_count, int dma_flags)
{
- return tioce_do_dma_map(pdev, paddr, byte_count, 0);
+ return tioce_do_dma_map(pdev, paddr, byte_count, 0, dma_flags);
}
/**
@@ -636,9 +657,9 @@ tioce_dma(struct pci_dev *pdev, u64 paddr, size_t byte_count)
* Simply call tioce_do_dma_map() to create a map with the barrier bit set
* in the address.
*/ static u64
-tioce_dma_consistent(struct pci_dev *pdev, u64 paddr, size_t byte_count)
+tioce_dma_consistent(struct pci_dev *pdev, u64 paddr, size_t byte_count, int dma_flags)
{
- return tioce_do_dma_map(pdev, paddr, byte_count, 1);
+ return tioce_do_dma_map(pdev, paddr, byte_count, 1, dma_flags);
}
/**
@@ -696,7 +717,7 @@ tioce_reserve_m32(struct tioce_kernel *ce_kern, u64 base, u64 limit)
while (ate_index <= last_ate) {
u64 ate;
- ate = ATE_MAKE(0xdeadbeef, ps);
+ ate = ATE_MAKE(0xdeadbeef, ps, 0);
ce_kern->ce_ate3240_shadow[ate_index] = ate;
tioce_mmr_storei(ce_kern, &ce_mmr->ce_ure_ate3240[ate_index],
ate);
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