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/addrs.h>
13 #include <asm/sn/geo.h>
14 #include <asm/sn/io.h>
15 #include <asm/sn/pcibr_provider.h>
16 #include <asm/sn/pcibus_provider_defs.h>
17 #include <asm/sn/pcidev.h>
18 #include <asm/sn/simulator.h>
19 #include <asm/sn/sn_sal.h>
20 #include <asm/sn/tioca_provider.h>
21 #include "xtalk/hubdev.h"
22 #include "xtalk/xwidgetdev.h"
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? */
37 struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /* indexed by asic type */
40 * Hooks and struct for unsupported pci providers
44 sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size)
50 sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
56 sn_default_pci_bus_fixup(struct pcibus_bussoft *soft)
61 static struct sn_pcibus_provider sn_pci_default_provider = {
62 .dma_map = sn_default_pci_map,
63 .dma_map_consistent = sn_default_pci_map,
64 .dma_unmap = sn_default_pci_unmap,
65 .bus_fixup = sn_default_pci_bus_fixup,
69 * Retrieve the DMA Flush List given nasid. This list is needed
70 * to implement the WAR - Flush DMA data on PIO Reads.
72 static inline uint64_t
73 sal_get_widget_dmaflush_list(u64 nasid, u64 widget_num, u64 address)
76 struct ia64_sal_retval ret_stuff;
80 SAL_CALL_NOLOCK(ret_stuff,
81 (u64) SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
82 (u64) nasid, (u64) widget_num, (u64) address, 0, 0, 0,
89 * Retrieve the hub device info structure for the given nasid.
91 static inline uint64_t sal_get_hubdev_info(u64 handle, u64 address)
94 struct ia64_sal_retval ret_stuff;
98 SAL_CALL_NOLOCK(ret_stuff,
99 (u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
100 (u64) handle, (u64) address, 0, 0, 0, 0, 0);
105 * Retrieve the pci bus information given the bus number.
107 static inline uint64_t sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
110 struct ia64_sal_retval ret_stuff;
111 ret_stuff.status = 0;
114 SAL_CALL_NOLOCK(ret_stuff,
115 (u64) SN_SAL_IOIF_GET_PCIBUS_INFO,
116 (u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
121 * Retrieve the pci device information given the bus and device|function number.
123 static inline uint64_t
124 sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
127 struct ia64_sal_retval ret_stuff;
128 ret_stuff.status = 0;
131 SAL_CALL_NOLOCK(ret_stuff,
132 (u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
133 (u64) segment, (u64) bus_number, (u64) devfn,
140 * sn_alloc_pci_sysdata() - This routine allocates a pci controller
141 * which is expected as the pci_dev and pci_bus sysdata by the Linux
142 * PCI infrastructure.
144 static inline struct pci_controller *sn_alloc_pci_sysdata(void)
146 struct pci_controller *pci_sysdata;
148 pci_sysdata = kmalloc(sizeof(*pci_sysdata), GFP_KERNEL);
152 memset(pci_sysdata, 0, sizeof(*pci_sysdata));
157 * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
158 * each node in the system.
160 static void sn_fixup_ionodes(void)
163 struct sn_flush_device_list *sn_flush_device_list;
164 struct hubdev_info *hubdev;
169 for (i = 0; i < numionodes; i++) {
170 hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
171 nasid = cnodeid_to_nasid(i);
172 status = sal_get_hubdev_info(nasid, (uint64_t) __pa(hubdev));
176 /* Attach the error interrupt handlers */
178 ice_error_init(hubdev);
180 hub_error_init(hubdev);
182 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
183 hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
185 if (!hubdev->hdi_flush_nasid_list.widget_p)
188 hubdev->hdi_flush_nasid_list.widget_p =
189 kmalloc((HUB_WIDGET_ID_MAX + 1) *
190 sizeof(struct sn_flush_device_list *), GFP_KERNEL);
192 memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
193 (HUB_WIDGET_ID_MAX + 1) *
194 sizeof(struct sn_flush_device_list *));
196 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
197 sn_flush_device_list = kmalloc(DEV_PER_WIDGET *
199 sn_flush_device_list),
201 memset(sn_flush_device_list, 0x0,
203 sizeof(struct sn_flush_device_list));
206 sal_get_widget_dmaflush_list(nasid, widget,
209 (sn_flush_device_list));
211 kfree(sn_flush_device_list);
215 hubdev->hdi_flush_nasid_list.widget_p[widget] =
216 sn_flush_device_list;
224 * sn_pci_fixup_slot() - This routine sets up a slot's resources
225 * consistent with the Linux PCI abstraction layer. Resources acquired
226 * from our PCI provider include PIO maps to BAR space and interrupt
229 void sn_pci_fixup_slot(struct pci_dev *dev)
234 struct pcibus_bussoft *bs;
235 struct pci_bus *host_pci_bus;
236 struct pci_dev *host_pci_dev;
237 struct sn_irq_info *sn_irq_info;
239 unsigned int bus_no, devfn;
241 dev->sysdata = kmalloc(sizeof(struct pcidev_info), GFP_KERNEL);
242 if (SN_PCIDEV_INFO(dev) <= 0)
243 BUG(); /* Cannot afford to run out of memory */
244 memset(SN_PCIDEV_INFO(dev), 0, sizeof(struct pcidev_info));
246 sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
247 if (sn_irq_info <= 0)
248 BUG(); /* Cannot afford to run out of memory */
249 memset(sn_irq_info, 0, sizeof(struct sn_irq_info));
251 /* Call to retrieve pci device information needed by kernel. */
252 status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
254 (u64) __pa(SN_PCIDEV_INFO(dev)),
255 (u64) __pa(sn_irq_info));
257 BUG(); /* Cannot get platform pci device information */
259 /* Copy over PIO Mapped Addresses */
260 for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
261 unsigned long start, end, addr;
263 if (!SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx])
266 start = dev->resource[idx].start;
267 end = dev->resource[idx].end;
269 addr = SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx];
270 addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
271 dev->resource[idx].start = addr;
272 dev->resource[idx].end = addr + size;
273 if (dev->resource[idx].flags & IORESOURCE_IO)
274 dev->resource[idx].parent = &ioport_resource;
276 dev->resource[idx].parent = &iomem_resource;
279 /* Using the PROMs values for the PCI host bus, get the Linux
280 * PCI host_pci_dev struct and set up host bus linkages
283 bus_no = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32;
284 devfn = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle & 0xffffffff;
285 host_pci_bus = pci_find_bus(pci_domain_nr(dev->bus), bus_no);
286 host_pci_dev = pci_get_slot(host_pci_bus, devfn);
288 SN_PCIDEV_INFO(dev)->host_pci_dev = host_pci_dev;
289 SN_PCIDEV_INFO(dev)->pdi_host_pcidev_info =
290 SN_PCIDEV_INFO(host_pci_dev);
291 SN_PCIDEV_INFO(dev)->pdi_linux_pcidev = dev;
292 bs = SN_PCIBUS_BUSSOFT(dev->bus);
293 SN_PCIDEV_INFO(dev)->pdi_pcibus_info = bs;
295 if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
296 SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
298 SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
301 /* Only set up IRQ stuff if this device has a host bus context */
302 if (bs && sn_irq_info->irq_irq) {
303 SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = sn_irq_info;
304 dev->irq = SN_PCIDEV_INFO(dev)->pdi_sn_irq_info->irq_irq;
305 sn_irq_fixup(dev, sn_irq_info);
307 SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = NULL;
313 * sn_pci_controller_fixup() - This routine sets up a bus's resources
314 * consistent with the Linux PCI abstraction layer.
316 static void sn_pci_controller_fixup(int segment, int busnum)
321 struct pci_controller *controller;
322 struct pcibus_bussoft *prom_bussoft_ptr;
323 struct hubdev_info *hubdev_info;
325 struct sn_pcibus_provider *provider;
328 sal_get_pcibus_info((u64) segment, (u64) busnum,
329 (u64) ia64_tpa(&prom_bussoft_ptr));
331 return; /* bus # does not exist */
334 prom_bussoft_ptr = __va(prom_bussoft_ptr);
335 controller = sn_alloc_pci_sysdata();
336 /* controller non-zero is BUG'd in sn_alloc_pci_sysdata */
338 bus = pci_scan_bus(busnum, &pci_root_ops, controller);
340 return; /* error, or bus already scanned */
344 * Per-provider fixup. Copies the contents from prom to local
345 * area and links SN_PCIBUS_BUSSOFT().
348 if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES) {
349 return; /* unsupported asic type */
352 provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
353 if (provider == NULL) {
354 return; /* no provider registerd for this asic */
357 provider_soft = NULL;
358 if (provider->bus_fixup) {
359 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr);
362 if (provider_soft == NULL) {
363 return; /* fixup failed or not applicable */
367 * Generic bus fixup goes here. Don't reference prom_bussoft_ptr
371 bus->sysdata = controller;
372 PCI_CONTROLLER(bus)->platform_data = provider_soft;
374 nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
375 cnode = nasid_to_cnodeid(nasid);
376 hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
377 SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
378 &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
382 * Ugly hack to get PCI setup until we have a proper ACPI namespace.
385 #define PCI_BUSES_TO_SCAN 256
387 static int __init sn_pci_init(void)
390 struct pci_dev *pci_dev = NULL;
391 extern void sn_init_cpei_timer(void);
392 #ifdef CONFIG_PROC_FS
393 extern void register_sn_procfs(void);
396 if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
400 * prime sn_pci_provider[]. Individial provider init routines will
401 * override their respective default entries.
404 for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
405 sn_pci_provider[i] = &sn_pci_default_provider;
407 pcibr_init_provider();
408 tioca_init_provider();
411 * This is needed to avoid bounce limit checks in the blk layer
413 ia64_max_iommu_merge_mask = ~PAGE_MASK;
416 sn_init_cpei_timer();
418 #ifdef CONFIG_PROC_FS
419 register_sn_procfs();
422 for (i = 0; i < PCI_BUSES_TO_SCAN; i++) {
423 sn_pci_controller_fixup(0, i);
427 * Generic Linux PCI Layer has created the pci_bus and pci_dev
428 * structures - time for us to add our SN PLatform specific
433 pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL) {
434 sn_pci_fixup_slot(pci_dev);
437 sn_ioif_inited = 1; /* sn I/O infrastructure now initialized */
443 * hubdev_init_node() - Creates the HUB data structure and link them to it's
444 * own NODE specific data area.
446 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
449 struct hubdev_info *hubdev_info;
451 if (node >= num_online_nodes()) /* Headless/memless IO nodes */
453 (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0),
458 (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node),
461 npda->pdinfo = (void *)hubdev_info;
466 cnodeid_get_geoid(cnodeid_t cnode)
469 struct hubdev_info *hubdev;
471 hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
472 return hubdev->hdi_geoid;
476 subsys_initcall(sn_pci_init);