[IA64-SGI] altix: tioca chip driver (agp)
Provide a driver for the altix TIOCA AGP chipset. An agpgart backend will
be provided as a separate patch.
Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 9f9d046..18160a0 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -19,6 +19,7 @@
#include "xtalk/hubdev.h"
#include <asm/sn/io.h>
#include <asm/sn/simulator.h>
+#include <asm/sn/tioca_provider.h>
char master_baseio_wid;
nasid_t master_nasid = INVALID_NASID; /* Partition Master */
@@ -393,6 +394,7 @@
sn_pci_provider[i] = &sn_pci_default_provider;
pcibr_init_provider();
+ tioca_init_provider();
/*
* This is needed to avoid bounce limit checks in the blk layer
diff --git a/arch/ia64/sn/pci/Makefile b/arch/ia64/sn/pci/Makefile
index b5dca00..2f915bc 100644
--- a/arch/ia64/sn/pci/Makefile
+++ b/arch/ia64/sn/pci/Makefile
@@ -7,4 +7,4 @@
#
# Makefile for the sn pci general routines.
-obj-y := pci_dma.o pcibr/
+obj-y := pci_dma.o tioca_provider.o pcibr/
diff --git a/arch/ia64/sn/pci/tioca_provider.c b/arch/ia64/sn/pci/tioca_provider.c
new file mode 100644
index 0000000..2234d61
--- /dev/null
+++ b/arch/ia64/sn/pci/tioca_provider.c
@@ -0,0 +1,668 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003-2005 Silicon Graphics, Inc. All Rights Reserved.
+ */
+
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <asm/sn/sn_sal.h>
+#include <asm/sn/addrs.h>
+#include <asm/sn/pcidev.h>
+#include <asm/sn/pcibus_provider_defs.h>
+#include <asm/sn/tioca_provider.h>
+
+uint32_t tioca_gart_found;
+EXPORT_SYMBOL(tioca_gart_found); /* used by agp-sgi */
+
+LIST_HEAD(tioca_list);
+EXPORT_SYMBOL(tioca_list); /* used by agp-sgi */
+
+static int tioca_gart_init(struct tioca_kernel *);
+
+/**
+ * tioca_gart_init - Initialize SGI TIOCA GART
+ * @tioca_common: ptr to common prom/kernel struct identifying the
+ *
+ * If the indicated tioca has devices present, initialize its associated
+ * GART MMR's and kernel memory.
+ */
+static int
+tioca_gart_init(struct tioca_kernel *tioca_kern)
+{
+ uint64_t ap_reg;
+ uint64_t offset;
+ struct page *tmp;
+ struct tioca_common *tioca_common;
+ volatile struct tioca *ca_base;
+
+ tioca_common = tioca_kern->ca_common;
+ ca_base = (struct tioca *)tioca_common->ca_common.bs_base;
+
+ if (list_empty(tioca_kern->ca_devices))
+ return 0;
+
+ ap_reg = 0;
+
+ /*
+ * Validate aperature size
+ */
+
+ switch (CA_APERATURE_SIZE >> 20) {
+ case 4:
+ ap_reg |= (0x3ff << CA_GART_AP_SIZE_SHFT); /* 4MB */
+ break;
+ case 8:
+ ap_reg |= (0x3fe << CA_GART_AP_SIZE_SHFT); /* 8MB */
+ break;
+ case 16:
+ ap_reg |= (0x3fc << CA_GART_AP_SIZE_SHFT); /* 16MB */
+ break;
+ case 32:
+ ap_reg |= (0x3f8 << CA_GART_AP_SIZE_SHFT); /* 32 MB */
+ break;
+ case 64:
+ ap_reg |= (0x3f0 << CA_GART_AP_SIZE_SHFT); /* 64 MB */
+ break;
+ case 128:
+ ap_reg |= (0x3e0 << CA_GART_AP_SIZE_SHFT); /* 128 MB */
+ break;
+ case 256:
+ ap_reg |= (0x3c0 << CA_GART_AP_SIZE_SHFT); /* 256 MB */
+ break;
+ case 512:
+ ap_reg |= (0x380 << CA_GART_AP_SIZE_SHFT); /* 512 MB */
+ break;
+ case 1024:
+ ap_reg |= (0x300 << CA_GART_AP_SIZE_SHFT); /* 1GB */
+ break;
+ case 2048:
+ ap_reg |= (0x200 << CA_GART_AP_SIZE_SHFT); /* 2GB */
+ break;
+ case 4096:
+ ap_reg |= (0x000 << CA_GART_AP_SIZE_SHFT); /* 4 GB */
+ break;
+ default:
+ printk(KERN_ERR "%s: Invalid CA_APERATURE_SIZE "
+ "0x%lx\n", __FUNCTION__, (ulong) CA_APERATURE_SIZE);
+ return -1;
+ }
+
+ /*
+ * Set up other aperature parameters
+ */
+
+ if (PAGE_SIZE >= 16384) {
+ tioca_kern->ca_ap_pagesize = 16384;
+ ap_reg |= CA_GART_PAGE_SIZE;
+ } else {
+ tioca_kern->ca_ap_pagesize = 4096;
+ }
+
+ tioca_kern->ca_ap_size = CA_APERATURE_SIZE;
+ tioca_kern->ca_ap_bus_base = CA_APERATURE_BASE;
+ tioca_kern->ca_gart_entries =
+ tioca_kern->ca_ap_size / tioca_kern->ca_ap_pagesize;
+
+ ap_reg |= (CA_GART_AP_ENB_AGP | CA_GART_AP_ENB_PCI);
+ ap_reg |= tioca_kern->ca_ap_bus_base;
+
+ /*
+ * Allocate and set up the GART
+ */
+
+ tioca_kern->ca_gart_size = tioca_kern->ca_gart_entries * sizeof(u64);
+ tmp =
+ alloc_pages_node(tioca_kern->ca_closest_node,
+ GFP_KERNEL | __GFP_ZERO,
+ get_order(tioca_kern->ca_gart_size));
+
+ if (!tmp) {
+ printk(KERN_ERR "%s: Could not allocate "
+ "%lu bytes (order %d) for GART\n",
+ __FUNCTION__,
+ tioca_kern->ca_gart_size,
+ get_order(tioca_kern->ca_gart_size));
+ return -ENOMEM;
+ }
+
+ tioca_kern->ca_gart = page_address(tmp);
+ tioca_kern->ca_gart_coretalk_addr =
+ PHYS_TO_TIODMA(virt_to_phys(tioca_kern->ca_gart));
+
+ /*
+ * Compute PCI/AGP convenience fields
+ */
+
+ offset = CA_PCI32_MAPPED_BASE - CA_APERATURE_BASE;
+ tioca_kern->ca_pciap_base = CA_PCI32_MAPPED_BASE;
+ tioca_kern->ca_pciap_size = CA_PCI32_MAPPED_SIZE;
+ tioca_kern->ca_pcigart_start = offset / tioca_kern->ca_ap_pagesize;
+ tioca_kern->ca_pcigart_base =
+ tioca_kern->ca_gart_coretalk_addr + offset;
+ tioca_kern->ca_pcigart =
+ &tioca_kern->ca_gart[tioca_kern->ca_pcigart_start];
+ tioca_kern->ca_pcigart_entries =
+ tioca_kern->ca_pciap_size / tioca_kern->ca_ap_pagesize;
+ tioca_kern->ca_pcigart_pagemap =
+ kcalloc(1, tioca_kern->ca_pcigart_entries / 8, GFP_KERNEL);
+ if (!tioca_kern->ca_pcigart_pagemap) {
+ free_pages((unsigned long)tioca_kern->ca_gart,
+ get_order(tioca_kern->ca_gart_size));
+ return -1;
+ }
+
+ offset = CA_AGP_MAPPED_BASE - CA_APERATURE_BASE;
+ tioca_kern->ca_gfxap_base = CA_AGP_MAPPED_BASE;
+ tioca_kern->ca_gfxap_size = CA_AGP_MAPPED_SIZE;
+ tioca_kern->ca_gfxgart_start = offset / tioca_kern->ca_ap_pagesize;
+ tioca_kern->ca_gfxgart_base =
+ tioca_kern->ca_gart_coretalk_addr + offset;
+ tioca_kern->ca_gfxgart =
+ &tioca_kern->ca_gart[tioca_kern->ca_gfxgart_start];
+ tioca_kern->ca_gfxgart_entries =
+ tioca_kern->ca_gfxap_size / tioca_kern->ca_ap_pagesize;
+
+ /*
+ * various control settings:
+ * use agp op-combining
+ * use GET semantics to fetch memory
+ * participate in coherency domain
+ * prefetch TLB entries
+ */
+
+ ca_base->ca_control1 |= CA_AGPDMA_OP_ENB_COMBDELAY; /* PV895469 ? */
+ ca_base->ca_control2 &= ~(CA_GART_MEM_PARAM);
+ ca_base->ca_control2 |= (0x2ull << CA_GART_MEM_PARAM_SHFT);
+ tioca_kern->ca_gart_iscoherent = 1;
+ ca_base->ca_control2 |=
+ (CA_GART_WR_PREFETCH_ENB | CA_GART_RD_PREFETCH_ENB);
+
+ /*
+ * Unmask GART fetch error interrupts. Clear residual errors first.
+ */
+
+ ca_base->ca_int_status_alias = CA_GART_FETCH_ERR;
+ ca_base->ca_mult_error_alias = CA_GART_FETCH_ERR;
+ ca_base->ca_int_mask &= ~CA_GART_FETCH_ERR;
+
+ /*
+ * Program the aperature and gart registers in TIOCA
+ */
+
+ ca_base->ca_gart_aperature = ap_reg;
+ ca_base->ca_gart_ptr_table = tioca_kern->ca_gart_coretalk_addr | 1;
+
+ return 0;
+}
+
+/**
+ * tioca_fastwrite_enable - enable AGP FW for a tioca and its functions
+ * @tioca_kernel: structure representing the CA
+ *
+ * Given a CA, scan all attached functions making sure they all support
+ * FastWrite. If so, enable FastWrite for all functions and the CA itself.
+ */
+
+void
+tioca_fastwrite_enable(struct tioca_kernel *tioca_kern)
+{
+ int cap_ptr;
+ uint64_t ca_control1;
+ uint32_t reg;
+ struct tioca *tioca_base;
+ struct pci_dev *pdev;
+ struct tioca_common *common;
+
+ common = tioca_kern->ca_common;
+
+ /*
+ * Scan all vga controllers on this bus making sure they all
+ * suport FW. If not, return.
+ */
+
+ list_for_each_entry(pdev, tioca_kern->ca_devices, bus_list) {
+ if (pdev->class != (PCI_CLASS_DISPLAY_VGA << 8))
+ continue;
+
+ cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
+ if (!cap_ptr)
+ return; /* no AGP CAP means no FW */
+
+ pci_read_config_dword(pdev, cap_ptr + PCI_AGP_STATUS, ®);
+ if (!(reg & PCI_AGP_STATUS_FW))
+ return; /* function doesn't support FW */
+ }
+
+ /*
+ * Set fw for all vga fn's
+ */
+
+ list_for_each_entry(pdev, tioca_kern->ca_devices, bus_list) {
+ if (pdev->class != (PCI_CLASS_DISPLAY_VGA << 8))
+ continue;
+
+ cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
+ pci_read_config_dword(pdev, cap_ptr + PCI_AGP_COMMAND, ®);
+ reg |= PCI_AGP_COMMAND_FW;
+ pci_write_config_dword(pdev, cap_ptr + PCI_AGP_COMMAND, reg);
+ }
+
+ /*
+ * Set ca's fw to match
+ */
+
+ tioca_base = (struct tioca *)common->ca_common.bs_base;
+ ca_control1 = tioca_base->ca_control1;
+ ca_control1 |= CA_AGP_FW_ENABLE;
+ tioca_base->ca_control1 = ca_control1;
+}
+
+EXPORT_SYMBOL(tioca_fastwrite_enable); /* used by agp-sgi */
+
+/**
+ * tioca_dma_d64 - create a DMA mapping using 64-bit direct mode
+ * @paddr: system physical address
+ *
+ * Map @paddr into 64-bit CA bus space. No device context is necessary.
+ * Bits 53:0 come from the coretalk address. We just need to mask in the
+ * following optional bits of the 64-bit pci address:
+ *
+ * 63:60 - Coretalk Packet Type - 0x1 for Mem Get/Put (coherent)
+ * 0x2 for PIO (non-coherent)
+ * We will always use 0x1
+ * 55:55 - Swap bytes Currently unused
+ */
+static uint64_t
+tioca_dma_d64(unsigned long paddr)
+{
+ dma_addr_t bus_addr;
+
+ bus_addr = PHYS_TO_TIODMA(paddr);
+
+ BUG_ON(!bus_addr);
+ BUG_ON(bus_addr >> 54);
+
+ /* Set upper nibble to Cache Coherent Memory op */
+ bus_addr |= (1UL << 60);
+
+ return bus_addr;
+}
+
+/**
+ * tioca_dma_d48 - create a DMA mapping using 48-bit direct mode
+ * @pdev: linux pci_dev representing the function
+ * @paddr: system physical address
+ *
+ * Map @paddr into 64-bit bus space of the CA associated with @pcidev_info.
+ *
+ * The CA agp 48 bit direct address falls out as follows:
+ *
+ * When direct mapping AGP addresses, the 48 bit AGP address is
+ * constructed as follows:
+ *
+ * [47:40] - Low 8 bits of the page Node ID extracted from coretalk
+ * address [47:40]. The upper 8 node bits are fixed
+ * and come from the xxx register bits [5:0]
+ * [39:38] - Chiplet ID extracted from coretalk address [39:38]
+ * [37:00] - node offset extracted from coretalk address [37:00]
+ *
+ * Since the node id in general will be non-zero, and the chiplet id
+ * will always be non-zero, it follows that the device must support
+ * a dma mask of at least 0xffffffffff (40 bits) to target node 0
+ * and in general should be 0xffffffffffff (48 bits) to target nodes
+ * up to 255. Nodes above 255 need the support of the xxx register,
+ * and so a given CA can only directly target nodes in the range
+ * xxx - xxx+255.
+ */
+static uint64_t
+tioca_dma_d48(struct pci_dev *pdev, uint64_t paddr)
+{
+ struct tioca_common *tioca_common;
+ struct tioca *ca_base;
+ uint64_t ct_addr;
+ dma_addr_t bus_addr;
+ uint32_t node_upper;
+ uint64_t agp_dma_extn;
+ struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(pdev);
+
+ tioca_common = (struct tioca_common *)pcidev_info->pdi_pcibus_info;
+ ca_base = (struct tioca *)tioca_common->ca_common.bs_base;
+
+ ct_addr = PHYS_TO_TIODMA(paddr);
+ if (!ct_addr)
+ return 0;
+
+ bus_addr = (dma_addr_t) (ct_addr & 0xffffffffffff);
+ node_upper = ct_addr >> 48;
+
+ if (node_upper > 64) {
+ printk(KERN_ERR "%s: coretalk addr 0x%p node id out "
+ "of range\n", __FUNCTION__, (void *)ct_addr);
+ return 0;
+ }
+
+ agp_dma_extn = ca_base->ca_agp_dma_addr_extn;
+ if (node_upper != (agp_dma_extn >> CA_AGP_DMA_NODE_ID_SHFT)) {
+ printk(KERN_ERR "%s: coretalk upper node (%u) "
+ "mismatch with ca_agp_dma_addr_extn (%lu)\n",
+ __FUNCTION__,
+ node_upper, (agp_dma_extn >> CA_AGP_DMA_NODE_ID_SHFT));
+ return 0;
+ }
+
+ return bus_addr;
+}
+
+/**
+ * tioca_dma_mapped - create a DMA mapping using a CA GART
+ * @pdev: linux pci_dev representing the function
+ * @paddr: host physical address to map
+ * @req_size: len (bytes) to map
+ *
+ * Map @paddr into CA address space using the GART mechanism. The mapped
+ * dma_addr_t is guarenteed to be contiguous in CA bus space.
+ */
+static dma_addr_t
+tioca_dma_mapped(struct pci_dev *pdev, uint64_t paddr, size_t req_size)
+{
+ int i, ps, ps_shift, entry, entries, mapsize, last_entry;
+ uint64_t xio_addr, end_xio_addr;
+ struct tioca_common *tioca_common;
+ struct tioca_kernel *tioca_kern;
+ dma_addr_t bus_addr = 0;
+ struct tioca_dmamap *ca_dmamap;
+ void *map;
+ unsigned long flags;
+ struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(pdev);;
+
+ tioca_common = (struct tioca_common *)pcidev_info->pdi_pcibus_info;
+ tioca_kern = (struct tioca_kernel *)tioca_common->ca_kernel_private;
+
+ xio_addr = PHYS_TO_TIODMA(paddr);
+ if (!xio_addr)
+ return 0;
+
+ spin_lock_irqsave(&tioca_kern->ca_lock, flags);
+
+ /*
+ * allocate a map struct
+ */
+
+ ca_dmamap = kcalloc(1, sizeof(struct tioca_dmamap), GFP_ATOMIC);
+ if (!ca_dmamap)
+ goto map_return;
+
+ /*
+ * Locate free entries that can hold req_size. Account for
+ * unaligned start/length when allocating.
+ */
+
+ ps = tioca_kern->ca_ap_pagesize; /* will be power of 2 */
+ ps_shift = ffs(ps) - 1;
+ end_xio_addr = xio_addr + req_size - 1;
+
+ entries = (end_xio_addr >> ps_shift) - (xio_addr >> ps_shift) + 1;
+
+ map = tioca_kern->ca_pcigart_pagemap;
+ mapsize = tioca_kern->ca_pcigart_entries;
+
+ entry = find_first_zero_bit(map, mapsize);
+ while (entry < mapsize) {
+ last_entry = find_next_bit(map, mapsize, entry);
+
+ if (last_entry - entry >= entries)
+ break;
+
+ entry = find_next_zero_bit(map, mapsize, last_entry);
+ }
+
+ if (entry > mapsize)
+ goto map_return;
+
+ for (i = 0; i < entries; i++)
+ set_bit(entry + i, map);
+
+ bus_addr = tioca_kern->ca_pciap_base + (entry * ps);
+
+ ca_dmamap->cad_dma_addr = bus_addr;
+ ca_dmamap->cad_gart_size = entries;
+ ca_dmamap->cad_gart_entry = entry;
+ list_add(&ca_dmamap->cad_list, &tioca_kern->ca_list);
+
+ if (xio_addr % ps) {
+ tioca_kern->ca_pcigart[entry] = tioca_paddr_to_gart(xio_addr);
+ bus_addr += xio_addr & (ps - 1);
+ xio_addr &= ~(ps - 1);
+ xio_addr += ps;
+ entry++;
+ }
+
+ while (xio_addr < end_xio_addr) {
+ tioca_kern->ca_pcigart[entry] = tioca_paddr_to_gart(xio_addr);
+ xio_addr += ps;
+ entry++;
+ }
+
+ tioca_tlbflush(tioca_kern);
+
+map_return:
+ spin_unlock_irqrestore(&tioca_kern->ca_lock, flags);
+ return bus_addr;
+}
+
+/**
+ * tioca_dma_unmap - release CA mapping resources
+ * @pdev: linux pci_dev representing the function
+ * @bus_addr: bus address returned by an earlier tioca_dma_map
+ * @dir: mapping direction (unused)
+ *
+ * Locate mapping resources associated with @bus_addr and release them.
+ * For mappings created using the direct modes (64 or 48) there are no
+ * resources to release.
+ */
+void
+tioca_dma_unmap(struct pci_dev *pdev, dma_addr_t bus_addr, int dir)
+{
+ int i, entry;
+ struct tioca_common *tioca_common;
+ struct tioca_kernel *tioca_kern;
+ struct tioca_dmamap *map;
+ struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(pdev);
+ unsigned long flags;
+
+ tioca_common = (struct tioca_common *)pcidev_info->pdi_pcibus_info;
+ tioca_kern = (struct tioca_kernel *)tioca_common->ca_kernel_private;
+
+ /* return straight away if this isn't be a mapped address */
+
+ if (bus_addr < tioca_kern->ca_pciap_base ||
+ bus_addr >= (tioca_kern->ca_pciap_base + tioca_kern->ca_pciap_size))
+ return;
+
+ spin_lock_irqsave(&tioca_kern->ca_lock, flags);
+
+ list_for_each_entry(map, &tioca_kern->ca_dmamaps, cad_list)
+ if (map->cad_dma_addr == bus_addr)
+ break;
+
+ BUG_ON(map == NULL);
+
+ entry = map->cad_gart_entry;
+
+ for (i = 0; i < map->cad_gart_size; i++, entry++) {
+ clear_bit(entry, tioca_kern->ca_pcigart_pagemap);
+ tioca_kern->ca_pcigart[entry] = 0;
+ }
+ tioca_tlbflush(tioca_kern);
+
+ list_del(&map->cad_list);
+ spin_unlock_irqrestore(&tioca_kern->ca_lock, flags);
+ kfree(map);
+}
+
+/**
+ * tioca_dma_map - map pages for PCI DMA
+ * @pdev: linux pci_dev representing the function
+ * @paddr: host physical address to map
+ * @byte_count: bytes to map
+ *
+ * This is the main wrapper for mapping host physical pages to CA PCI space.
+ * The mapping mode used is based on the devices dma_mask. As a last resort
+ * use the GART mapped mode.
+ */
+uint64_t
+tioca_dma_map(struct pci_dev *pdev, uint64_t paddr, size_t byte_count)
+{
+ uint64_t mapaddr;
+
+ /*
+ * 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.
+ */
+
+ if (pdev->dma_mask == ~0UL)
+ mapaddr = tioca_dma_d64(paddr);
+ else if (pdev->dma_mask == 0xffffffffffffUL)
+ mapaddr = tioca_dma_d48(pdev, paddr);
+ else
+ mapaddr = 0;
+
+ /* Last resort ... use PCI portion of CA GART */
+
+ if (mapaddr == 0)
+ mapaddr = tioca_dma_mapped(pdev, paddr, byte_count);
+
+ return mapaddr;
+}
+
+/**
+ * tioca_error_intr_handler - SGI TIO CA error interrupt handler
+ * @irq: unused
+ * @arg: pointer to tioca_common struct for the given CA
+ * @pt: unused
+ *
+ * Handle a CA error interrupt. Simply a wrapper around a SAL call which
+ * defers processing to the SGI prom.
+ */
+static irqreturn_t
+tioca_error_intr_handler(int irq, void *arg, struct pt_regs *pt)
+{
+ struct tioca_common *soft = arg;
+ struct ia64_sal_retval ret_stuff;
+ uint64_t segment;
+ uint64_t busnum;
+ ret_stuff.status = 0;
+ ret_stuff.v0 = 0;
+
+ segment = 0;
+ busnum = soft->ca_common.bs_persist_busnum;
+
+ SAL_CALL_NOLOCK(ret_stuff,
+ (u64) SN_SAL_IOIF_ERROR_INTERRUPT,
+ segment, busnum, 0, 0, 0, 0, 0);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * tioca_bus_fixup - perform final PCI fixup for a TIO CA bus
+ * @prom_bussoft: Common prom/kernel struct representing the bus
+ *
+ * Replicates the tioca_common pointed to by @prom_bussoft in kernel
+ * space. Allocates and initializes a kernel-only area for a given CA,
+ * and sets up an irq for handling CA error interrupts.
+ *
+ * On successful setup, returns the kernel version of tioca_common back to
+ * the caller.
+ */
+void *
+tioca_bus_fixup(struct pcibus_bussoft *prom_bussoft)
+{
+ struct tioca_common *tioca_common;
+ struct tioca_kernel *tioca_kern;
+ struct pci_bus *bus;
+
+ /* sanity check prom rev */
+
+ if (sn_sal_rev_major() < 4 ||
+ (sn_sal_rev_major() == 4 && sn_sal_rev_minor() < 6)) {
+ printk
+ (KERN_ERR "%s: SGI prom rev 4.06 or greater required "
+ "for tioca support\n", __FUNCTION__);
+ return NULL;
+ }
+
+ /*
+ * Allocate kernel bus soft and copy from prom.
+ */
+
+ tioca_common = kcalloc(1, sizeof(struct tioca_common), GFP_KERNEL);
+ if (!tioca_common)
+ return NULL;
+
+ memcpy(tioca_common, prom_bussoft, sizeof(struct tioca_common));
+ tioca_common->ca_common.bs_base |= __IA64_UNCACHED_OFFSET;
+
+ /* init kernel-private area */
+
+ tioca_kern = kcalloc(1, sizeof(struct tioca_kernel), GFP_KERNEL);
+ if (!tioca_kern) {
+ kfree(tioca_common);
+ return NULL;
+ }
+
+ tioca_kern->ca_common = tioca_common;
+ spin_lock_init(&tioca_kern->ca_lock);
+ INIT_LIST_HEAD(&tioca_kern->ca_dmamaps);
+ tioca_kern->ca_closest_node =
+ nasid_to_cnodeid(tioca_common->ca_closest_nasid);
+ tioca_common->ca_kernel_private = (uint64_t) tioca_kern;
+
+ bus = pci_find_bus(0, tioca_common->ca_common.bs_persist_busnum);
+ BUG_ON(!bus);
+ tioca_kern->ca_devices = &bus->devices;
+
+ /* init GART */
+
+ if (tioca_gart_init(tioca_kern) < 0) {
+ kfree(tioca_kern);
+ kfree(tioca_common);
+ return NULL;
+ }
+
+ tioca_gart_found++;
+ list_add(&tioca_kern->ca_list, &tioca_list);
+
+ if (request_irq(SGI_TIOCA_ERROR,
+ tioca_error_intr_handler,
+ SA_SHIRQ, "TIOCA error", (void *)tioca_common))
+ printk(KERN_WARNING
+ "%s: Unable to get irq %d. "
+ "Error interrupts won't be routed for TIOCA bus %d\n",
+ __FUNCTION__, SGI_TIOCA_ERROR,
+ (int)tioca_common->ca_common.bs_persist_busnum);
+
+ return tioca_common;
+}
+
+static struct sn_pcibus_provider tioca_pci_interfaces = {
+ .dma_map = tioca_dma_map,
+ .dma_map_consistent = tioca_dma_map,
+ .dma_unmap = tioca_dma_unmap,
+ .bus_fixup = tioca_bus_fixup,
+};
+
+/**
+ * tioca_init_provider - init SN PCI provider ops for TIO CA
+ */
+int
+tioca_init_provider(void)
+{
+ sn_pci_provider[PCIIO_ASIC_TYPE_TIOCA] = &tioca_pci_interfaces;
+ return 0;
+}
diff --git a/include/asm-ia64/sn/pcibus_provider_defs.h b/include/asm-ia64/sn/pcibus_provider_defs.h
index f546b4e..04e27d5 100644
--- a/include/asm-ia64/sn/pcibus_provider_defs.h
+++ b/include/asm-ia64/sn/pcibus_provider_defs.h
@@ -17,8 +17,9 @@
#define PCIIO_ASIC_TYPE_PPB 1
#define PCIIO_ASIC_TYPE_PIC 2
#define PCIIO_ASIC_TYPE_TIOCP 3
+#define PCIIO_ASIC_TYPE_TIOCA 4
-#define PCIIO_ASIC_MAX_TYPES 4
+#define PCIIO_ASIC_MAX_TYPES 5
/*
* Common pciio bus provider data. There should be one of these as the
diff --git a/include/asm-ia64/sn/tioca.h b/include/asm-ia64/sn/tioca.h
new file mode 100644
index 0000000..bc1aacf
--- /dev/null
+++ b/include/asm-ia64/sn/tioca.h
@@ -0,0 +1,596 @@
+#ifndef _ASM_IA64_SN_TIO_TIOCA_H
+#define _ASM_IA64_SN_TIO_TIOCA_H
+
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 2003-2005 Silicon Graphics, Inc. All rights reserved.
+ */
+
+
+#define TIOCA_PART_NUM 0xE020
+#define TIOCA_MFGR_NUM 0x24
+#define TIOCA_REV_A 0x1
+
+/*
+ * Register layout for TIO:CA. See below for bitmasks for each register.
+ */
+
+struct tioca {
+ uint64_t ca_id; /* 0x000000 */
+ uint64_t ca_control1; /* 0x000008 */
+ uint64_t ca_control2; /* 0x000010 */
+ uint64_t ca_status1; /* 0x000018 */
+ uint64_t ca_status2; /* 0x000020 */
+ uint64_t ca_gart_aperature; /* 0x000028 */
+ uint64_t ca_gfx_detach; /* 0x000030 */
+ uint64_t ca_inta_dest_addr; /* 0x000038 */
+ uint64_t ca_intb_dest_addr; /* 0x000040 */
+ uint64_t ca_err_int_dest_addr; /* 0x000048 */
+ uint64_t ca_int_status; /* 0x000050 */
+ uint64_t ca_int_status_alias; /* 0x000058 */
+ uint64_t ca_mult_error; /* 0x000060 */
+ uint64_t ca_mult_error_alias; /* 0x000068 */
+ uint64_t ca_first_error; /* 0x000070 */
+ uint64_t ca_int_mask; /* 0x000078 */
+ uint64_t ca_crm_pkterr_type; /* 0x000080 */
+ uint64_t ca_crm_pkterr_type_alias; /* 0x000088 */
+ uint64_t ca_crm_ct_error_detail_1; /* 0x000090 */
+ uint64_t ca_crm_ct_error_detail_2; /* 0x000098 */
+ uint64_t ca_crm_tnumto; /* 0x0000A0 */
+ uint64_t ca_gart_err; /* 0x0000A8 */
+ uint64_t ca_pcierr_type; /* 0x0000B0 */
+ uint64_t ca_pcierr_addr; /* 0x0000B8 */
+
+ uint64_t ca_pad_0000C0[3]; /* 0x0000{C0..D0} */
+
+ uint64_t ca_pci_rd_buf_flush; /* 0x0000D8 */
+ uint64_t ca_pci_dma_addr_extn; /* 0x0000E0 */
+ uint64_t ca_agp_dma_addr_extn; /* 0x0000E8 */
+ uint64_t ca_force_inta; /* 0x0000F0 */
+ uint64_t ca_force_intb; /* 0x0000F8 */
+ uint64_t ca_debug_vector_sel; /* 0x000100 */
+ uint64_t ca_debug_mux_core_sel; /* 0x000108 */
+ uint64_t ca_debug_mux_pci_sel; /* 0x000110 */
+ uint64_t ca_debug_domain_sel; /* 0x000118 */
+
+ uint64_t ca_pad_000120[28]; /* 0x0001{20..F8} */
+
+ uint64_t ca_gart_ptr_table; /* 0x200 */
+ uint64_t ca_gart_tlb_addr[8]; /* 0x2{08..40} */
+};
+
+/*
+ * Mask/shift definitions for TIO:CA registers. The convention here is
+ * to mainly use the names as they appear in the "TIO AEGIS Programmers'
+ * Reference" with a CA_ prefix added. Some exceptions were made to fix
+ * duplicate field names or to generalize fields that are common to
+ * different registers (ca_debug_mux_core_sel and ca_debug_mux_pci_sel for
+ * example).
+ *
+ * Fields consisting of a single bit have a single #define have a single
+ * macro declaration to mask the bit. Fields consisting of multiple bits
+ * have two declarations: one to mask the proper bits in a register, and
+ * a second with the suffix "_SHFT" to identify how far the mask needs to
+ * be shifted right to get its base value.
+ */
+
+/* ==== ca_control1 */
+#define CA_SYS_BIG_END (1ull << 0)
+#define CA_DMA_AGP_SWAP (1ull << 1)
+#define CA_DMA_PCI_SWAP (1ull << 2)
+#define CA_PIO_IO_SWAP (1ull << 3)
+#define CA_PIO_MEM_SWAP (1ull << 4)
+#define CA_GFX_WR_SWAP (1ull << 5)
+#define CA_AGP_FW_ENABLE (1ull << 6)
+#define CA_AGP_CAL_CYCLE (0x7ull << 7)
+#define CA_AGP_CAL_CYCLE_SHFT 7
+#define CA_AGP_CAL_PRSCL_BYP (1ull << 10)
+#define CA_AGP_INIT_CAL_ENB (1ull << 11)
+#define CA_INJ_ADDR_PERR (1ull << 12)
+#define CA_INJ_DATA_PERR (1ull << 13)
+ /* bits 15:14 unused */
+#define CA_PCIM_IO_NBE_AD (0x7ull << 16)
+#define CA_PCIM_IO_NBE_AD_SHFT 16
+#define CA_PCIM_FAST_BTB_ENB (1ull << 19)
+ /* bits 23:20 unused */
+#define CA_PIO_ADDR_OFFSET (0xffull << 24)
+#define CA_PIO_ADDR_OFFSET_SHFT 24
+ /* bits 35:32 unused */
+#define CA_AGPDMA_OP_COMBDELAY (0x1full << 36)
+#define CA_AGPDMA_OP_COMBDELAY_SHFT 36
+ /* bit 41 unused */
+#define CA_AGPDMA_OP_ENB_COMBDELAY (1ull << 42)
+#define CA_PCI_INT_LPCNT (0xffull << 44)
+#define CA_PCI_INT_LPCNT_SHFT 44
+ /* bits 63:52 unused */
+
+/* ==== ca_control2 */
+#define CA_AGP_LATENCY_TO (0xffull << 0)
+#define CA_AGP_LATENCY_TO_SHFT 0
+#define CA_PCI_LATENCY_TO (0xffull << 8)
+#define CA_PCI_LATENCY_TO_SHFT 8
+#define CA_PCI_MAX_RETRY (0x3ffull << 16)
+#define CA_PCI_MAX_RETRY_SHFT 16
+ /* bits 27:26 unused */
+#define CA_RT_INT_EN (0x3ull << 28)
+#define CA_RT_INT_EN_SHFT 28
+#define CA_MSI_INT_ENB (1ull << 30)
+#define CA_PCI_ARB_ERR_ENB (1ull << 31)
+#define CA_GART_MEM_PARAM (0x3ull << 32)
+#define CA_GART_MEM_PARAM_SHFT 32
+#define CA_GART_RD_PREFETCH_ENB (1ull << 34)
+#define CA_GART_WR_PREFETCH_ENB (1ull << 35)
+#define CA_GART_FLUSH_TLB (1ull << 36)
+ /* bits 39:37 unused */
+#define CA_CRM_TNUMTO_PERIOD (0x1fffull << 40)
+#define CA_CRM_TNUMTO_PERIOD_SHFT 40
+ /* bits 55:53 unused */
+#define CA_CRM_TNUMTO_ENB (1ull << 56)
+#define CA_CRM_PRESCALER_BYP (1ull << 57)
+ /* bits 59:58 unused */
+#define CA_CRM_MAX_CREDIT (0x7ull << 60)
+#define CA_CRM_MAX_CREDIT_SHFT 60
+ /* bit 63 unused */
+
+/* ==== ca_status1 */
+#define CA_CORELET_ID (0x3ull << 0)
+#define CA_CORELET_ID_SHFT 0
+#define CA_INTA_N (1ull << 2)
+#define CA_INTB_N (1ull << 3)
+#define CA_CRM_CREDIT_AVAIL (0x7ull << 4)
+#define CA_CRM_CREDIT_AVAIL_SHFT 4
+ /* bit 7 unused */
+#define CA_CRM_SPACE_AVAIL (0x7full << 8)
+#define CA_CRM_SPACE_AVAIL_SHFT 8
+ /* bit 15 unused */
+#define CA_GART_TLB_VAL (0xffull << 16)
+#define CA_GART_TLB_VAL_SHFT 16
+ /* bits 63:24 unused */
+
+/* ==== ca_status2 */
+#define CA_GFX_CREDIT_AVAIL (0xffull << 0)
+#define CA_GFX_CREDIT_AVAIL_SHFT 0
+#define CA_GFX_OPQ_AVAIL (0xffull << 8)
+#define CA_GFX_OPQ_AVAIL_SHFT 8
+#define CA_GFX_WRBUFF_AVAIL (0xffull << 16)
+#define CA_GFX_WRBUFF_AVAIL_SHFT 16
+#define CA_ADMA_OPQ_AVAIL (0xffull << 24)
+#define CA_ADMA_OPQ_AVAIL_SHFT 24
+#define CA_ADMA_WRBUFF_AVAIL (0xffull << 32)
+#define CA_ADMA_WRBUFF_AVAIL_SHFT 32
+#define CA_ADMA_RDBUFF_AVAIL (0x7full << 40)
+#define CA_ADMA_RDBUFF_AVAIL_SHFT 40
+#define CA_PCI_PIO_OP_STAT (1ull << 47)
+#define CA_PDMA_OPQ_AVAIL (0xfull << 48)
+#define CA_PDMA_OPQ_AVAIL_SHFT 48
+#define CA_PDMA_WRBUFF_AVAIL (0xfull << 52)
+#define CA_PDMA_WRBUFF_AVAIL_SHFT 52
+#define CA_PDMA_RDBUFF_AVAIL (0x3ull << 56)
+#define CA_PDMA_RDBUFF_AVAIL_SHFT 56
+ /* bits 63:58 unused */
+
+/* ==== ca_gart_aperature */
+#define CA_GART_AP_ENB_AGP (1ull << 0)
+#define CA_GART_PAGE_SIZE (1ull << 1)
+#define CA_GART_AP_ENB_PCI (1ull << 2)
+ /* bits 11:3 unused */
+#define CA_GART_AP_SIZE (0x3ffull << 12)
+#define CA_GART_AP_SIZE_SHFT 12
+#define CA_GART_AP_BASE (0x3ffffffffffull << 22)
+#define CA_GART_AP_BASE_SHFT 22
+
+/* ==== ca_inta_dest_addr
+ ==== ca_intb_dest_addr
+ ==== ca_err_int_dest_addr */
+ /* bits 2:0 unused */
+#define CA_INT_DEST_ADDR (0x7ffffffffffffull << 3)
+#define CA_INT_DEST_ADDR_SHFT 3
+ /* bits 55:54 unused */
+#define CA_INT_DEST_VECT (0xffull << 56)
+#define CA_INT_DEST_VECT_SHFT 56
+
+/* ==== ca_int_status */
+/* ==== ca_int_status_alias */
+/* ==== ca_mult_error */
+/* ==== ca_mult_error_alias */
+/* ==== ca_first_error */
+/* ==== ca_int_mask */
+#define CA_PCI_ERR (1ull << 0)
+ /* bits 3:1 unused */
+#define CA_GART_FETCH_ERR (1ull << 4)
+#define CA_GFX_WR_OVFLW (1ull << 5)
+#define CA_PIO_REQ_OVFLW (1ull << 6)
+#define CA_CRM_PKTERR (1ull << 7)
+#define CA_CRM_DVERR (1ull << 8)
+#define CA_TNUMTO (1ull << 9)
+#define CA_CXM_RSP_CRED_OVFLW (1ull << 10)
+#define CA_CXM_REQ_CRED_OVFLW (1ull << 11)
+#define CA_PIO_INVALID_ADDR (1ull << 12)
+#define CA_PCI_ARB_TO (1ull << 13)
+#define CA_AGP_REQ_OFLOW (1ull << 14)
+#define CA_SBA_TYPE1_ERR (1ull << 15)
+ /* bit 16 unused */
+#define CA_INTA (1ull << 17)
+#define CA_INTB (1ull << 18)
+#define CA_MULT_INTA (1ull << 19)
+#define CA_MULT_INTB (1ull << 20)
+#define CA_GFX_CREDIT_OVFLW (1ull << 21)
+ /* bits 63:22 unused */
+
+/* ==== ca_crm_pkterr_type */
+/* ==== ca_crm_pkterr_type_alias */
+#define CA_CRM_PKTERR_SBERR_HDR (1ull << 0)
+#define CA_CRM_PKTERR_DIDN (1ull << 1)
+#define CA_CRM_PKTERR_PACTYPE (1ull << 2)
+#define CA_CRM_PKTERR_INV_TNUM (1ull << 3)
+#define CA_CRM_PKTERR_ADDR_RNG (1ull << 4)
+#define CA_CRM_PKTERR_ADDR_ALGN (1ull << 5)
+#define CA_CRM_PKTERR_HDR_PARAM (1ull << 6)
+#define CA_CRM_PKTERR_CW_ERR (1ull << 7)
+#define CA_CRM_PKTERR_SBERR_NH (1ull << 8)
+#define CA_CRM_PKTERR_EARLY_TERM (1ull << 9)
+#define CA_CRM_PKTERR_EARLY_TAIL (1ull << 10)
+#define CA_CRM_PKTERR_MSSNG_TAIL (1ull << 11)
+#define CA_CRM_PKTERR_MSSNG_HDR (1ull << 12)
+ /* bits 15:13 unused */
+#define CA_FIRST_CRM_PKTERR_SBERR_HDR (1ull << 16)
+#define CA_FIRST_CRM_PKTERR_DIDN (1ull << 17)
+#define CA_FIRST_CRM_PKTERR_PACTYPE (1ull << 18)
+#define CA_FIRST_CRM_PKTERR_INV_TNUM (1ull << 19)
+#define CA_FIRST_CRM_PKTERR_ADDR_RNG (1ull << 20)
+#define CA_FIRST_CRM_PKTERR_ADDR_ALGN (1ull << 21)
+#define CA_FIRST_CRM_PKTERR_HDR_PARAM (1ull << 22)
+#define CA_FIRST_CRM_PKTERR_CW_ERR (1ull << 23)
+#define CA_FIRST_CRM_PKTERR_SBERR_NH (1ull << 24)
+#define CA_FIRST_CRM_PKTERR_EARLY_TERM (1ull << 25)
+#define CA_FIRST_CRM_PKTERR_EARLY_TAIL (1ull << 26)
+#define CA_FIRST_CRM_PKTERR_MSSNG_TAIL (1ull << 27)
+#define CA_FIRST_CRM_PKTERR_MSSNG_HDR (1ull << 28)
+ /* bits 63:29 unused */
+
+/* ==== ca_crm_ct_error_detail_1 */
+#define CA_PKT_TYPE (0xfull << 0)
+#define CA_PKT_TYPE_SHFT 0
+#define CA_SRC_ID (0x3ull << 4)
+#define CA_SRC_ID_SHFT 4
+#define CA_DATA_SZ (0x3ull << 6)
+#define CA_DATA_SZ_SHFT 6
+#define CA_TNUM (0xffull << 8)
+#define CA_TNUM_SHFT 8
+#define CA_DW_DATA_EN (0xffull << 16)
+#define CA_DW_DATA_EN_SHFT 16
+#define CA_GFX_CRED (0xffull << 24)
+#define CA_GFX_CRED_SHFT 24
+#define CA_MEM_RD_PARAM (0x3ull << 32)
+#define CA_MEM_RD_PARAM_SHFT 32
+#define CA_PIO_OP (1ull << 34)
+#define CA_CW_ERR (1ull << 35)
+ /* bits 62:36 unused */
+#define CA_VALID (1ull << 63)
+
+/* ==== ca_crm_ct_error_detail_2 */
+ /* bits 2:0 unused */
+#define CA_PKT_ADDR (0x1fffffffffffffull << 3)
+#define CA_PKT_ADDR_SHFT 3
+ /* bits 63:56 unused */
+
+/* ==== ca_crm_tnumto */
+#define CA_CRM_TNUMTO_VAL (0xffull << 0)
+#define CA_CRM_TNUMTO_VAL_SHFT 0
+#define CA_CRM_TNUMTO_WR (1ull << 8)
+ /* bits 63:9 unused */
+
+/* ==== ca_gart_err */
+#define CA_GART_ERR_SOURCE (0x3ull << 0)
+#define CA_GART_ERR_SOURCE_SHFT 0
+ /* bits 3:2 unused */
+#define CA_GART_ERR_ADDR (0xfffffffffull << 4)
+#define CA_GART_ERR_ADDR_SHFT 4
+ /* bits 63:40 unused */
+
+/* ==== ca_pcierr_type */
+#define CA_PCIERR_DATA (0xffffffffull << 0)
+#define CA_PCIERR_DATA_SHFT 0
+#define CA_PCIERR_ENB (0xfull << 32)
+#define CA_PCIERR_ENB_SHFT 32
+#define CA_PCIERR_CMD (0xfull << 36)
+#define CA_PCIERR_CMD_SHFT 36
+#define CA_PCIERR_A64 (1ull << 40)
+#define CA_PCIERR_SLV_SERR (1ull << 41)
+#define CA_PCIERR_SLV_WR_PERR (1ull << 42)
+#define CA_PCIERR_SLV_RD_PERR (1ull << 43)
+#define CA_PCIERR_MST_SERR (1ull << 44)
+#define CA_PCIERR_MST_WR_PERR (1ull << 45)
+#define CA_PCIERR_MST_RD_PERR (1ull << 46)
+#define CA_PCIERR_MST_MABT (1ull << 47)
+#define CA_PCIERR_MST_TABT (1ull << 48)
+#define CA_PCIERR_MST_RETRY_TOUT (1ull << 49)
+
+#define CA_PCIERR_TYPES \
+ (CA_PCIERR_A64|CA_PCIERR_SLV_SERR| \
+ CA_PCIERR_SLV_WR_PERR|CA_PCIERR_SLV_RD_PERR| \
+ CA_PCIERR_MST_SERR|CA_PCIERR_MST_WR_PERR|CA_PCIERR_MST_RD_PERR| \
+ CA_PCIERR_MST_MABT|CA_PCIERR_MST_TABT|CA_PCIERR_MST_RETRY_TOUT)
+
+ /* bits 63:50 unused */
+
+/* ==== ca_pci_dma_addr_extn */
+#define CA_UPPER_NODE_OFFSET (0x3full << 0)
+#define CA_UPPER_NODE_OFFSET_SHFT 0
+ /* bits 7:6 unused */
+#define CA_CHIPLET_ID (0x3ull << 8)
+#define CA_CHIPLET_ID_SHFT 8
+ /* bits 11:10 unused */
+#define CA_PCI_DMA_NODE_ID (0xffffull << 12)
+#define CA_PCI_DMA_NODE_ID_SHFT 12
+ /* bits 27:26 unused */
+#define CA_PCI_DMA_PIO_MEM_TYPE (1ull << 28)
+ /* bits 63:29 unused */
+
+
+/* ==== ca_agp_dma_addr_extn */
+ /* bits 19:0 unused */
+#define CA_AGP_DMA_NODE_ID (0xffffull << 20)
+#define CA_AGP_DMA_NODE_ID_SHFT 20
+ /* bits 27:26 unused */
+#define CA_AGP_DMA_PIO_MEM_TYPE (1ull << 28)
+ /* bits 63:29 unused */
+
+/* ==== ca_debug_vector_sel */
+#define CA_DEBUG_MN_VSEL (0xfull << 0)
+#define CA_DEBUG_MN_VSEL_SHFT 0
+#define CA_DEBUG_PP_VSEL (0xfull << 4)
+#define CA_DEBUG_PP_VSEL_SHFT 4
+#define CA_DEBUG_GW_VSEL (0xfull << 8)
+#define CA_DEBUG_GW_VSEL_SHFT 8
+#define CA_DEBUG_GT_VSEL (0xfull << 12)
+#define CA_DEBUG_GT_VSEL_SHFT 12
+#define CA_DEBUG_PD_VSEL (0xfull << 16)
+#define CA_DEBUG_PD_VSEL_SHFT 16
+#define CA_DEBUG_AD_VSEL (0xfull << 20)
+#define CA_DEBUG_AD_VSEL_SHFT 20
+#define CA_DEBUG_CX_VSEL (0xfull << 24)
+#define CA_DEBUG_CX_VSEL_SHFT 24
+#define CA_DEBUG_CR_VSEL (0xfull << 28)
+#define CA_DEBUG_CR_VSEL_SHFT 28
+#define CA_DEBUG_BA_VSEL (0xfull << 32)
+#define CA_DEBUG_BA_VSEL_SHFT 32
+#define CA_DEBUG_PE_VSEL (0xfull << 36)
+#define CA_DEBUG_PE_VSEL_SHFT 36
+#define CA_DEBUG_BO_VSEL (0xfull << 40)
+#define CA_DEBUG_BO_VSEL_SHFT 40
+#define CA_DEBUG_BI_VSEL (0xfull << 44)
+#define CA_DEBUG_BI_VSEL_SHFT 44
+#define CA_DEBUG_AS_VSEL (0xfull << 48)
+#define CA_DEBUG_AS_VSEL_SHFT 48
+#define CA_DEBUG_PS_VSEL (0xfull << 52)
+#define CA_DEBUG_PS_VSEL_SHFT 52
+#define CA_DEBUG_PM_VSEL (0xfull << 56)
+#define CA_DEBUG_PM_VSEL_SHFT 56
+ /* bits 63:60 unused */
+
+/* ==== ca_debug_mux_core_sel */
+/* ==== ca_debug_mux_pci_sel */
+#define CA_DEBUG_MSEL0 (0x7ull << 0)
+#define CA_DEBUG_MSEL0_SHFT 0
+ /* bit 3 unused */
+#define CA_DEBUG_NSEL0 (0x7ull << 4)
+#define CA_DEBUG_NSEL0_SHFT 4
+ /* bit 7 unused */
+#define CA_DEBUG_MSEL1 (0x7ull << 8)
+#define CA_DEBUG_MSEL1_SHFT 8
+ /* bit 11 unused */
+#define CA_DEBUG_NSEL1 (0x7ull << 12)
+#define CA_DEBUG_NSEL1_SHFT 12
+ /* bit 15 unused */
+#define CA_DEBUG_MSEL2 (0x7ull << 16)
+#define CA_DEBUG_MSEL2_SHFT 16
+ /* bit 19 unused */
+#define CA_DEBUG_NSEL2 (0x7ull << 20)
+#define CA_DEBUG_NSEL2_SHFT 20
+ /* bit 23 unused */
+#define CA_DEBUG_MSEL3 (0x7ull << 24)
+#define CA_DEBUG_MSEL3_SHFT 24
+ /* bit 27 unused */
+#define CA_DEBUG_NSEL3 (0x7ull << 28)
+#define CA_DEBUG_NSEL3_SHFT 28
+ /* bit 31 unused */
+#define CA_DEBUG_MSEL4 (0x7ull << 32)
+#define CA_DEBUG_MSEL4_SHFT 32
+ /* bit 35 unused */
+#define CA_DEBUG_NSEL4 (0x7ull << 36)
+#define CA_DEBUG_NSEL4_SHFT 36
+ /* bit 39 unused */
+#define CA_DEBUG_MSEL5 (0x7ull << 40)
+#define CA_DEBUG_MSEL5_SHFT 40
+ /* bit 43 unused */
+#define CA_DEBUG_NSEL5 (0x7ull << 44)
+#define CA_DEBUG_NSEL5_SHFT 44
+ /* bit 47 unused */
+#define CA_DEBUG_MSEL6 (0x7ull << 48)
+#define CA_DEBUG_MSEL6_SHFT 48
+ /* bit 51 unused */
+#define CA_DEBUG_NSEL6 (0x7ull << 52)
+#define CA_DEBUG_NSEL6_SHFT 52
+ /* bit 55 unused */
+#define CA_DEBUG_MSEL7 (0x7ull << 56)
+#define CA_DEBUG_MSEL7_SHFT 56
+ /* bit 59 unused */
+#define CA_DEBUG_NSEL7 (0x7ull << 60)
+#define CA_DEBUG_NSEL7_SHFT 60
+ /* bit 63 unused */
+
+
+/* ==== ca_debug_domain_sel */
+#define CA_DEBUG_DOMAIN_L (1ull << 0)
+#define CA_DEBUG_DOMAIN_H (1ull << 1)
+ /* bits 63:2 unused */
+
+/* ==== ca_gart_ptr_table */
+#define CA_GART_PTR_VAL (1ull << 0)
+ /* bits 11:1 unused */
+#define CA_GART_PTR_ADDR (0xfffffffffffull << 12)
+#define CA_GART_PTR_ADDR_SHFT 12
+ /* bits 63:56 unused */
+
+/* ==== ca_gart_tlb_addr[0-7] */
+#define CA_GART_TLB_ADDR (0xffffffffffffffull << 0)
+#define CA_GART_TLB_ADDR_SHFT 0
+ /* bits 62:56 unused */
+#define CA_GART_TLB_ENTRY_VAL (1ull << 63)
+
+/*
+ * PIO address space ranges for TIO:CA
+ */
+
+/* CA internal registers */
+#define CA_PIO_ADMIN 0x00000000
+#define CA_PIO_ADMIN_LEN 0x00010000
+
+/* GFX Write Buffer - Diagnostics */
+#define CA_PIO_GFX 0x00010000
+#define CA_PIO_GFX_LEN 0x00010000
+
+/* AGP DMA Write Buffer - Diagnostics */
+#define CA_PIO_AGP_DMAWRITE 0x00020000
+#define CA_PIO_AGP_DMAWRITE_LEN 0x00010000
+
+/* AGP DMA READ Buffer - Diagnostics */
+#define CA_PIO_AGP_DMAREAD 0x00030000
+#define CA_PIO_AGP_DMAREAD_LEN 0x00010000
+
+/* PCI Config Type 0 */
+#define CA_PIO_PCI_TYPE0_CONFIG 0x01000000
+#define CA_PIO_PCI_TYPE0_CONFIG_LEN 0x01000000
+
+/* PCI Config Type 1 */
+#define CA_PIO_PCI_TYPE1_CONFIG 0x02000000
+#define CA_PIO_PCI_TYPE1_CONFIG_LEN 0x01000000
+
+/* PCI I/O Cycles - mapped to PCI Address 0x00000000-0x04ffffff */
+#define CA_PIO_PCI_IO 0x03000000
+#define CA_PIO_PCI_IO_LEN 0x05000000
+
+/* PCI MEM Cycles - mapped to PCI with CA_PIO_ADDR_OFFSET of ca_control1 */
+/* use Fast Write if enabled and coretalk packet type is a GFX request */
+#define CA_PIO_PCI_MEM_OFFSET 0x08000000
+#define CA_PIO_PCI_MEM_OFFSET_LEN 0x08000000
+
+/* PCI MEM Cycles - mapped to PCI Address 0x00000000-0xbfffffff */
+/* use Fast Write if enabled and coretalk packet type is a GFX request */
+#define CA_PIO_PCI_MEM 0x40000000
+#define CA_PIO_PCI_MEM_LEN 0xc0000000
+
+/*
+ * DMA space
+ *
+ * The CA aperature (ie. bus address range) mapped by the GART is segmented into
+ * two parts. The lower portion of the aperature is used for mapping 32 bit
+ * PCI addresses which are managed by the dma interfaces in this file. The
+ * upper poprtion of the aperature is used for mapping 48 bit AGP addresses.
+ * The AGP portion of the aperature is managed by the agpgart_be.c driver
+ * in drivers/linux/agp. There are ca-specific hooks in that driver to
+ * manipulate the gart, but management of the AGP portion of the aperature
+ * is the responsibility of that driver.
+ *
+ * CA allows three main types of DMA mapping:
+ *
+ * PCI 64-bit Managed by this driver
+ * PCI 32-bit Managed by this driver
+ * AGP 48-bit Managed by hooks in the /dev/agpgart driver
+ *
+ * All of the above can optionally be remapped through the GART. The following
+ * table lists the combinations of addressing types and GART remapping that
+ * is currently supported by the driver (h/w supports all, s/w limits this):
+ *
+ * PCI64 PCI32 AGP48
+ * GART no yes yes
+ * Direct yes yes no
+ *
+ * GART remapping of PCI64 is not done because there is no need to. The
+ * 64 bit PCI address holds all of the information necessary to target any
+ * memory in the system.
+ *
+ * AGP48 is always mapped through the GART. Management of the AGP48 portion
+ * of the aperature is the responsibility of code in the agpgart_be driver.
+ *
+ * The non-64 bit bus address space will currently be partitioned like this:
+ *
+ * 0xffff_ffff_ffff +--------
+ * | AGP48 direct
+ * | Space managed by this driver
+ * CA_AGP_DIRECT_BASE +--------
+ * | AGP GART mapped (gfx aperature)
+ * | Space managed by /dev/agpgart driver
+ * | This range is exposed to the agpgart
+ * | driver as the "graphics aperature"
+ * CA_AGP_MAPPED_BASE +-----
+ * | PCI GART mapped
+ * | Space managed by this driver
+ * CA_PCI32_MAPPED_BASE +----
+ * | PCI32 direct
+ * | Space managed by this driver
+ * 0xC000_0000 +--------
+ * (CA_PCI32_DIRECT_BASE)
+ *
+ * The bus address range CA_PCI32_MAPPED_BASE through CA_AGP_DIRECT_BASE
+ * is what we call the CA aperature. Addresses falling in this range will
+ * be remapped using the GART.
+ *
+ * The bus address range CA_AGP_MAPPED_BASE through CA_AGP_DIRECT_BASE
+ * is what we call the graphics aperature. This is a subset of the CA
+ * aperature and is under the control of the agpgart_be driver.
+ *
+ * CA_PCI32_MAPPED_BASE, CA_AGP_MAPPED_BASE, and CA_AGP_DIRECT_BASE are
+ * somewhat arbitrary values. The known constraints on choosing these is:
+ *
+ * 1) CA_AGP_DIRECT_BASE-CA_PCI32_MAPPED_BASE+1 (the CA aperature size)
+ * must be one of the values supported by the ca_gart_aperature register.
+ * Currently valid values are: 4MB through 4096MB in powers of 2 increments
+ *
+ * 2) CA_AGP_DIRECT_BASE-CA_AGP_MAPPED_BASE+1 (the gfx aperature size)
+ * must be in MB units since that's what the agpgart driver assumes.
+ */
+
+/*
+ * Define Bus DMA ranges. These are configurable (see constraints above)
+ * and will probably need tuning based on experience.
+ */
+
+
+/*
+ * 11/24/03
+ * CA has an addressing glitch w.r.t. PCI direct 32 bit DMA that makes it
+ * generally unusable. The problem is that for PCI direct 32
+ * DMA's, all 32 bits of the bus address are used to form the lower 32 bits
+ * of the coretalk address, and coretalk bits 38:32 come from a register.
+ * Since only PCI bus addresses 0xC0000000-0xFFFFFFFF (1GB) are available
+ * for DMA (the rest is allocated to PIO), host node addresses need to be
+ * such that their lower 32 bits fall in the 0xC0000000-0xffffffff range
+ * as well. So there can be no PCI32 direct DMA below 3GB!! For this
+ * reason we set the CA_PCI32_DIRECT_SIZE to 0 which essentially makes
+ * tioca_dma_direct32() a noop but preserves the code flow should this issue
+ * be fixed in a respin.
+ *
+ * For now, all PCI32 DMA's must be mapped through the GART.
+ */
+
+#define CA_PCI32_DIRECT_BASE 0xC0000000UL /* BASE not configurable */
+#define CA_PCI32_DIRECT_SIZE 0x00000000UL /* 0 MB */
+
+#define CA_PCI32_MAPPED_BASE 0xC0000000UL
+#define CA_PCI32_MAPPED_SIZE 0x40000000UL /* 2GB */
+
+#define CA_AGP_MAPPED_BASE 0x80000000UL
+#define CA_AGP_MAPPED_SIZE 0x40000000UL /* 2GB */
+
+#define CA_AGP_DIRECT_BASE 0x40000000UL /* 2GB */
+#define CA_AGP_DIRECT_SIZE 0x40000000UL
+
+#define CA_APERATURE_BASE (CA_AGP_MAPPED_BASE)
+#define CA_APERATURE_SIZE (CA_AGP_MAPPED_SIZE+CA_PCI32_MAPPED_SIZE)
+
+#endif /* _ASM_IA64_SN_TIO_TIOCA_H */
diff --git a/include/asm-ia64/sn/tioca_provider.h b/include/asm-ia64/sn/tioca_provider.h
new file mode 100644
index 0000000..b6acc22
--- /dev/null
+++ b/include/asm-ia64/sn/tioca_provider.h
@@ -0,0 +1,206 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 2003-2005 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#ifndef _ASM_IA64_SN_TIO_CA_AGP_PROVIDER_H
+#define _ASM_IA64_SN_TIO_CA_AGP_PROVIDER_H
+
+#include <asm/sn/tioca.h>
+
+/*
+ * WAR enables
+ * Defines for individual WARs. Each is a bitmask of applicable
+ * part revision numbers. (1 << 1) == rev A, (1 << 2) == rev B,
+ * (3 << 1) == (rev A or rev B), etc
+ */
+
+#define TIOCA_WAR_ENABLED(pv, tioca_common) \
+ ((1 << tioca_common->ca_rev) & pv)
+
+ /* TIO:ICE:FRZ:Freezer loses a PIO data ucred on PIO RD RSP with CW error */
+#define PV907908 (1 << 1)
+ /* ATI config space problems after BIOS execution starts */
+#define PV908234 (1 << 1)
+ /* CA:AGPDMA write request data mismatch with ABC1CL merge */
+#define PV895469 (1 << 1)
+ /* TIO:CA TLB invalidate of written GART entries possibly not occuring in CA*/
+#define PV910244 (1 << 1)
+
+struct tioca_dmamap{
+ struct list_head cad_list; /* headed by ca_list */
+
+ dma_addr_t cad_dma_addr; /* Linux dma handle */
+ uint cad_gart_entry; /* start entry in ca_gart_pagemap */
+ uint cad_gart_size; /* #entries for this map */
+};
+
+/*
+ * Kernel only fields. Prom may look at this stuff for debugging only.
+ * Access this structure through the ca_kernel_private ptr.
+ */
+
+struct tioca_common ;
+
+struct tioca_kernel {
+ struct tioca_common *ca_common; /* tioca this belongs to */
+ struct list_head ca_list; /* list of all ca's */
+ struct list_head ca_dmamaps;
+ spinlock_t ca_lock; /* Kernel lock */
+ cnodeid_t ca_closest_node;
+ struct list_head *ca_devices; /* bus->devices */
+
+ /*
+ * General GART stuff
+ */
+ uint64_t ca_ap_size; /* size of aperature in bytes */
+ uint32_t ca_gart_entries; /* # uint64_t entries in gart */
+ uint32_t ca_ap_pagesize; /* aperature page size in bytes */
+ uint64_t ca_ap_bus_base; /* bus address of CA aperature */
+ uint64_t ca_gart_size; /* gart size in bytes */
+ uint64_t *ca_gart; /* gart table vaddr */
+ uint64_t ca_gart_coretalk_addr; /* gart coretalk addr */
+ uint8_t ca_gart_iscoherent; /* used in tioca_tlbflush */
+
+ /* PCI GART convenience values */
+ uint64_t ca_pciap_base; /* pci aperature bus base address */
+ uint64_t ca_pciap_size; /* pci aperature size (bytes) */
+ uint64_t ca_pcigart_base; /* gfx GART bus base address */
+ uint64_t *ca_pcigart; /* gfx GART vm address */
+ uint32_t ca_pcigart_entries;
+ uint32_t ca_pcigart_start; /* PCI start index in ca_gart */
+ void *ca_pcigart_pagemap;
+
+ /* AGP GART convenience values */
+ uint64_t ca_gfxap_base; /* gfx aperature bus base address */
+ uint64_t ca_gfxap_size; /* gfx aperature size (bytes) */
+ uint64_t ca_gfxgart_base; /* gfx GART bus base address */
+ uint64_t *ca_gfxgart; /* gfx GART vm address */
+ uint32_t ca_gfxgart_entries;
+ uint32_t ca_gfxgart_start; /* agpgart start index in ca_gart */
+};
+
+/*
+ * Common tioca info shared between kernel and prom
+ *
+ * DO NOT CHANGE THIS STRUCT WITHOUT MAKING CORRESPONDING CHANGES
+ * TO THE PROM VERSION.
+ */
+
+struct tioca_common {
+ struct pcibus_bussoft ca_common; /* common pciio header */
+
+ uint32_t ca_rev;
+ uint32_t ca_closest_nasid;
+
+ uint64_t ca_prom_private;
+ uint64_t ca_kernel_private;
+};
+
+/**
+ * tioca_paddr_to_gart - Convert an SGI coretalk address to a CA GART entry
+ * @paddr: page address to convert
+ *
+ * Convert a system [coretalk] address to a GART entry. GART entries are
+ * formed using the following:
+ *
+ * data = ( (1<<63) | ( (REMAP_NODE_ID << 40) | (MD_CHIPLET_ID << 38) |
+ * (REMAP_SYS_ADDR) ) >> 12 )
+ *
+ * DATA written to 1 GART TABLE Entry in system memory is remapped system
+ * addr for 1 page
+ *
+ * The data is for coretalk address format right shifted 12 bits with a
+ * valid bit.
+ *
+ * GART_TABLE_ENTRY [ 25:0 ] -- REMAP_SYS_ADDRESS[37:12].
+ * GART_TABLE_ENTRY [ 27:26 ] -- SHUB MD chiplet id.
+ * GART_TABLE_ENTRY [ 41:28 ] -- REMAP_NODE_ID.
+ * GART_TABLE_ENTRY [ 63 ] -- Valid Bit
+ */
+static inline u64
+tioca_paddr_to_gart(unsigned long paddr)
+{
+ /*
+ * We are assuming right now that paddr already has the correct
+ * format since the address from xtalk_dmaXXX should already have
+ * NODE_ID, CHIPLET_ID, and SYS_ADDR in the correct locations.
+ */
+
+ return ((paddr) >> 12) | (1UL << 63);
+}
+
+/**
+ * tioca_physpage_to_gart - Map a host physical page for SGI CA based DMA
+ * @page_addr: system page address to map
+ */
+
+static inline unsigned long
+tioca_physpage_to_gart(uint64_t page_addr)
+{
+ uint64_t coretalk_addr;
+
+ coretalk_addr = PHYS_TO_TIODMA(page_addr);
+ if (!coretalk_addr) {
+ return 0;
+ }
+
+ return tioca_paddr_to_gart(coretalk_addr);
+}
+
+/**
+ * tioca_tlbflush - invalidate cached SGI CA GART TLB entries
+ * @tioca_kernel: CA context
+ *
+ * Invalidate tlb entries for a given CA GART. Main complexity is to account
+ * for revA bug.
+ */
+static inline void
+tioca_tlbflush(struct tioca_kernel *tioca_kernel)
+{
+ volatile uint64_t tmp;
+ volatile struct tioca *ca_base;
+ struct tioca_common *tioca_common;
+
+ tioca_common = tioca_kernel->ca_common;
+ ca_base = (struct tioca *)tioca_common->ca_common.bs_base;
+
+ /*
+ * Explicit flushes not needed if GART is in cached mode
+ */
+ if (tioca_kernel->ca_gart_iscoherent) {
+ if (TIOCA_WAR_ENABLED(PV910244, tioca_common)) {
+ /*
+ * PV910244: RevA CA needs explicit flushes.
+ * Need to put GART into uncached mode before
+ * flushing otherwise the explicit flush is ignored.
+ *
+ * Alternate WAR would be to leave GART cached and
+ * touch every CL aligned GART entry.
+ */
+
+ ca_base->ca_control2 &= ~(CA_GART_MEM_PARAM);
+ ca_base->ca_control2 |= CA_GART_FLUSH_TLB;
+ ca_base->ca_control2 |=
+ (0x2ull << CA_GART_MEM_PARAM_SHFT);
+ tmp = ca_base->ca_control2;
+ }
+
+ return;
+ }
+
+ /*
+ * Gart in uncached mode ... need an explicit flush.
+ */
+
+ ca_base->ca_control2 |= CA_GART_FLUSH_TLB;
+ tmp = ca_base->ca_control2;
+}
+
+extern uint32_t tioca_gart_found;
+extern int tioca_init_provider(void);
+extern void tioca_fastwrite_enable(struct tioca_kernel *tioca_kern);
+#endif /* _ASM_IA64_SN_TIO_CA_AGP_PROVIDER_H */