2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 1992 - 1997, 2000-2004 Silicon Graphics, Inc. All rights reserved.
9 #include <linux/bootmem.h>
10 #include <linux/nodemask.h>
11 #include <asm/sn/types.h>
12 #include <asm/sn/sn_sal.h>
13 #include <asm/sn/addrs.h>
14 #include "pci/pcibus_provider_defs.h"
15 #include "pci/pcidev.h"
16 #include "pci/pcibr_provider.h"
17 #include "xtalk/xwidgetdev.h"
18 #include <asm/sn/geo.h>
19 #include "xtalk/hubdev.h"
20 #include <asm/sn/io.h>
21 #include <asm/sn/simulator.h>
23 char master_baseio_wid;
24 nasid_t master_nasid = INVALID_NASID; /* Partition Master */
27 struct hubdev_info hubdev;
31 moduleid_t id; /* Module ID of this module */
32 struct slab_info slab_info[MAX_SLABS + 1];
35 int sn_ioif_inited = 0; /* SN I/O infrastructure initialized? */
38 * Retrieve the DMA Flush List given nasid. This list is needed
39 * to implement the WAR - Flush DMA data on PIO Reads.
41 static inline uint64_t
42 sal_get_widget_dmaflush_list(u64 nasid, u64 widget_num, u64 address)
45 struct ia64_sal_retval ret_stuff;
49 SAL_CALL_NOLOCK(ret_stuff,
50 (u64) SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
51 (u64) nasid, (u64) widget_num, (u64) address, 0, 0, 0,
58 * Retrieve the hub device info structure for the given nasid.
60 static inline uint64_t sal_get_hubdev_info(u64 handle, u64 address)
63 struct ia64_sal_retval ret_stuff;
67 SAL_CALL_NOLOCK(ret_stuff,
68 (u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
69 (u64) handle, (u64) address, 0, 0, 0, 0, 0);
74 * Retrieve the pci bus information given the bus number.
76 static inline uint64_t sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
79 struct ia64_sal_retval ret_stuff;
83 SAL_CALL_NOLOCK(ret_stuff,
84 (u64) SN_SAL_IOIF_GET_PCIBUS_INFO,
85 (u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
90 * Retrieve the pci device information given the bus and device|function number.
92 static inline uint64_t
93 sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
96 struct ia64_sal_retval ret_stuff;
100 SAL_CALL_NOLOCK(ret_stuff,
101 (u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
102 (u64) segment, (u64) bus_number, (u64) devfn,
109 * sn_alloc_pci_sysdata() - This routine allocates a pci controller
110 * which is expected as the pci_dev and pci_bus sysdata by the Linux
111 * PCI infrastructure.
113 static inline struct pci_controller *sn_alloc_pci_sysdata(void)
115 struct pci_controller *pci_sysdata;
117 pci_sysdata = kmalloc(sizeof(*pci_sysdata), GFP_KERNEL);
121 memset(pci_sysdata, 0, sizeof(*pci_sysdata));
126 * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
127 * each node in the system.
129 static void sn_fixup_ionodes(void)
132 struct sn_flush_device_list *sn_flush_device_list;
133 struct hubdev_info *hubdev;
138 for (i = 0; i < numionodes; i++) {
139 hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
140 nasid = cnodeid_to_nasid(i);
141 status = sal_get_hubdev_info(nasid, (uint64_t) __pa(hubdev));
145 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
146 hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
148 if (!hubdev->hdi_flush_nasid_list.widget_p)
151 hubdev->hdi_flush_nasid_list.widget_p =
152 kmalloc((HUB_WIDGET_ID_MAX + 1) *
153 sizeof(struct sn_flush_device_list *), GFP_KERNEL);
155 memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
156 (HUB_WIDGET_ID_MAX + 1) *
157 sizeof(struct sn_flush_device_list *));
159 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
160 sn_flush_device_list = kmalloc(DEV_PER_WIDGET *
162 sn_flush_device_list),
164 memset(sn_flush_device_list, 0x0,
166 sizeof(struct sn_flush_device_list));
169 sal_get_widget_dmaflush_list(nasid, widget,
172 (sn_flush_device_list));
174 kfree(sn_flush_device_list);
178 hubdev->hdi_flush_nasid_list.widget_p[widget] =
179 sn_flush_device_list;
183 hub_error_init(hubdev);
185 ice_error_init(hubdev);
191 * sn_pci_fixup_slot() - This routine sets up a slot's resources
192 * consistent with the Linux PCI abstraction layer. Resources acquired
193 * from our PCI provider include PIO maps to BAR space and interrupt
196 static void sn_pci_fixup_slot(struct pci_dev *dev)
201 struct sn_irq_info *sn_irq_info;
202 struct pci_dev *host_pci_dev;
205 dev->sysdata = kmalloc(sizeof(struct pcidev_info), GFP_KERNEL);
206 if (SN_PCIDEV_INFO(dev) <= 0)
207 BUG(); /* Cannot afford to run out of memory */
208 memset(SN_PCIDEV_INFO(dev), 0, sizeof(struct pcidev_info));
210 sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
211 if (sn_irq_info <= 0)
212 BUG(); /* Cannot afford to run out of memory */
213 memset(sn_irq_info, 0, sizeof(struct sn_irq_info));
215 /* Call to retrieve pci device information needed by kernel. */
216 status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
218 (u64) __pa(SN_PCIDEV_INFO(dev)),
219 (u64) __pa(sn_irq_info));
221 BUG(); /* Cannot get platform pci device information information */
223 /* Copy over PIO Mapped Addresses */
224 for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
225 unsigned long start, end, addr;
227 if (!SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx])
230 start = dev->resource[idx].start;
231 end = dev->resource[idx].end;
233 addr = SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx];
234 addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
235 dev->resource[idx].start = addr;
236 dev->resource[idx].end = addr + size;
237 if (dev->resource[idx].flags & IORESOURCE_IO)
238 dev->resource[idx].parent = &ioport_resource;
240 dev->resource[idx].parent = &iomem_resource;
243 /* set up host bus linkages */
245 pci_find_slot(SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32,
246 SN_PCIDEV_INFO(dev)->
247 pdi_slot_host_handle & 0xffffffff);
248 SN_PCIDEV_INFO(dev)->pdi_host_pcidev_info =
249 SN_PCIDEV_INFO(host_pci_dev);
250 SN_PCIDEV_INFO(dev)->pdi_linux_pcidev = dev;
251 SN_PCIDEV_INFO(dev)->pdi_pcibus_info = SN_PCIBUS_BUSSOFT(dev->bus);
253 /* Only set up IRQ stuff if this device has a host bus context */
254 if (SN_PCIDEV_BUSSOFT(dev) && sn_irq_info->irq_irq) {
255 SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = sn_irq_info;
256 dev->irq = SN_PCIDEV_INFO(dev)->pdi_sn_irq_info->irq_irq;
257 sn_irq_fixup(dev, sn_irq_info);
262 * sn_pci_controller_fixup() - This routine sets up a bus's resources
263 * consistent with the Linux PCI abstraction layer.
265 static void sn_pci_controller_fixup(int segment, int busnum)
270 struct pci_controller *controller;
271 struct pcibus_bussoft *prom_bussoft_ptr;
272 struct hubdev_info *hubdev_info;
276 sal_get_pcibus_info((u64) segment, (u64) busnum,
277 (u64) ia64_tpa(&prom_bussoft_ptr));
279 return; /* bus # does not exist */
282 prom_bussoft_ptr = __va(prom_bussoft_ptr);
283 controller = sn_alloc_pci_sysdata();
284 /* controller non-zero is BUG'd in sn_alloc_pci_sysdata */
286 bus = pci_scan_bus(busnum, &pci_root_ops, controller);
288 return; /* error, or bus already scanned */
292 * Per-provider fixup. Copies the contents from prom to local
293 * area and links SN_PCIBUS_BUSSOFT().
295 * Note: Provider is responsible for ensuring that prom_bussoft_ptr
296 * represents an asic-type that it can handle.
299 if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB) {
300 return; /* no further fixup necessary */
303 provider_soft = pcibr_bus_fixup(prom_bussoft_ptr);
304 if (provider_soft == NULL) {
305 return; /* fixup failed or not applicable */
309 * Generic bus fixup goes here. Don't reference prom_bussoft_ptr
313 bus->sysdata = controller;
314 PCI_CONTROLLER(bus)->platform_data = provider_soft;
316 nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
317 cnode = nasid_to_cnodeid(nasid);
318 hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
319 SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
320 &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
324 * Ugly hack to get PCI setup until we have a proper ACPI namespace.
327 #define PCI_BUSES_TO_SCAN 256
329 static int __init sn_pci_init(void)
332 struct pci_dev *pci_dev = NULL;
333 extern void sn_init_cpei_timer(void);
334 #ifdef CONFIG_PROC_FS
335 extern void register_sn_procfs(void);
338 if (!ia64_platform_is("sn2") || IS_RUNNING_ON_SIMULATOR())
342 * This is needed to avoid bounce limit checks in the blk layer
344 ia64_max_iommu_merge_mask = ~PAGE_MASK;
346 sn_irq = kmalloc(sizeof(struct sn_irq_info *) * NR_IRQS, GFP_KERNEL);
348 BUG(); /* Canno afford to run out of memory. */
349 memset(sn_irq, 0, sizeof(struct sn_irq_info *) * NR_IRQS);
351 sn_init_cpei_timer();
353 #ifdef CONFIG_PROC_FS
354 register_sn_procfs();
357 for (i = 0; i < PCI_BUSES_TO_SCAN; i++) {
358 sn_pci_controller_fixup(0, i);
362 * Generic Linux PCI Layer has created the pci_bus and pci_dev
363 * structures - time for us to add our SN PLatform specific
368 pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL) {
369 sn_pci_fixup_slot(pci_dev);
372 sn_ioif_inited = 1; /* sn I/O infrastructure now initialized */
378 * hubdev_init_node() - Creates the HUB data structure and link them to it's
379 * own NODE specific data area.
381 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
384 struct hubdev_info *hubdev_info;
386 if (node >= num_online_nodes()) /* Headless/memless IO nodes */
388 (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0),
393 (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node),
396 npda->pdinfo = (void *)hubdev_info;
401 cnodeid_get_geoid(cnodeid_t cnode)
404 struct hubdev_info *hubdev;
406 hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
407 return hubdev->hdi_geoid;
411 subsys_initcall(sn_pci_init);