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 <asm/sn/pcibus_provider_defs.h>
15 #include <asm/sn/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>
22 #include <asm/sn/tioca_provider.h>
24 char master_baseio_wid;
25 nasid_t master_nasid = INVALID_NASID; /* Partition Master */
28 struct hubdev_info hubdev;
32 moduleid_t id; /* Module ID of this module */
33 struct slab_info slab_info[MAX_SLABS + 1];
36 int sn_ioif_inited = 0; /* SN I/O infrastructure initialized? */
38 struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /* indexed by asic type */
41 * Hooks and struct for unsupported pci providers
45 sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size)
51 sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
57 sn_default_pci_bus_fixup(struct pcibus_bussoft *soft)
62 static struct sn_pcibus_provider sn_pci_default_provider = {
63 .dma_map = sn_default_pci_map,
64 .dma_map_consistent = sn_default_pci_map,
65 .dma_unmap = sn_default_pci_unmap,
66 .bus_fixup = sn_default_pci_bus_fixup,
70 * Retrieve the DMA Flush List given nasid. This list is needed
71 * to implement the WAR - Flush DMA data on PIO Reads.
73 static inline uint64_t
74 sal_get_widget_dmaflush_list(u64 nasid, u64 widget_num, u64 address)
77 struct ia64_sal_retval ret_stuff;
81 SAL_CALL_NOLOCK(ret_stuff,
82 (u64) SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
83 (u64) nasid, (u64) widget_num, (u64) address, 0, 0, 0,
90 * Retrieve the hub device info structure for the given nasid.
92 static inline uint64_t sal_get_hubdev_info(u64 handle, u64 address)
95 struct ia64_sal_retval ret_stuff;
99 SAL_CALL_NOLOCK(ret_stuff,
100 (u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
101 (u64) handle, (u64) address, 0, 0, 0, 0, 0);
106 * Retrieve the pci bus information given the bus number.
108 static inline uint64_t sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
111 struct ia64_sal_retval ret_stuff;
112 ret_stuff.status = 0;
115 SAL_CALL_NOLOCK(ret_stuff,
116 (u64) SN_SAL_IOIF_GET_PCIBUS_INFO,
117 (u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
122 * Retrieve the pci device information given the bus and device|function number.
124 static inline uint64_t
125 sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
128 struct ia64_sal_retval ret_stuff;
129 ret_stuff.status = 0;
132 SAL_CALL_NOLOCK(ret_stuff,
133 (u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
134 (u64) segment, (u64) bus_number, (u64) devfn,
141 * sn_alloc_pci_sysdata() - This routine allocates a pci controller
142 * which is expected as the pci_dev and pci_bus sysdata by the Linux
143 * PCI infrastructure.
145 static inline struct pci_controller *sn_alloc_pci_sysdata(void)
147 struct pci_controller *pci_sysdata;
149 pci_sysdata = kmalloc(sizeof(*pci_sysdata), GFP_KERNEL);
153 memset(pci_sysdata, 0, sizeof(*pci_sysdata));
158 * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
159 * each node in the system.
161 static void sn_fixup_ionodes(void)
164 struct sn_flush_device_list *sn_flush_device_list;
165 struct hubdev_info *hubdev;
170 for (i = 0; i < numionodes; i++) {
171 hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
172 nasid = cnodeid_to_nasid(i);
173 status = sal_get_hubdev_info(nasid, (uint64_t) __pa(hubdev));
177 /* Attach the error interrupt handlers */
179 ice_error_init(hubdev);
181 hub_error_init(hubdev);
183 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
184 hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
186 if (!hubdev->hdi_flush_nasid_list.widget_p)
189 hubdev->hdi_flush_nasid_list.widget_p =
190 kmalloc((HUB_WIDGET_ID_MAX + 1) *
191 sizeof(struct sn_flush_device_list *), GFP_KERNEL);
193 memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
194 (HUB_WIDGET_ID_MAX + 1) *
195 sizeof(struct sn_flush_device_list *));
197 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
198 sn_flush_device_list = kmalloc(DEV_PER_WIDGET *
200 sn_flush_device_list),
202 memset(sn_flush_device_list, 0x0,
204 sizeof(struct sn_flush_device_list));
207 sal_get_widget_dmaflush_list(nasid, widget,
210 (sn_flush_device_list));
212 kfree(sn_flush_device_list);
216 hubdev->hdi_flush_nasid_list.widget_p[widget] =
217 sn_flush_device_list;
225 * sn_pci_fixup_slot() - This routine sets up a slot's resources
226 * consistent with the Linux PCI abstraction layer. Resources acquired
227 * from our PCI provider include PIO maps to BAR space and interrupt
230 static void sn_pci_fixup_slot(struct pci_dev *dev)
235 struct sn_irq_info *sn_irq_info;
236 struct pci_dev *host_pci_dev;
238 struct pcibus_bussoft *bs;
240 dev->sysdata = kmalloc(sizeof(struct pcidev_info), GFP_KERNEL);
241 if (SN_PCIDEV_INFO(dev) <= 0)
242 BUG(); /* Cannot afford to run out of memory */
243 memset(SN_PCIDEV_INFO(dev), 0, sizeof(struct pcidev_info));
245 sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
246 if (sn_irq_info <= 0)
247 BUG(); /* Cannot afford to run out of memory */
248 memset(sn_irq_info, 0, sizeof(struct sn_irq_info));
250 /* Call to retrieve pci device information needed by kernel. */
251 status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
253 (u64) __pa(SN_PCIDEV_INFO(dev)),
254 (u64) __pa(sn_irq_info));
256 BUG(); /* Cannot get platform pci device information information */
258 /* Copy over PIO Mapped Addresses */
259 for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
260 unsigned long start, end, addr;
262 if (!SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx])
265 start = dev->resource[idx].start;
266 end = dev->resource[idx].end;
268 addr = SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx];
269 addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
270 dev->resource[idx].start = addr;
271 dev->resource[idx].end = addr + size;
272 if (dev->resource[idx].flags & IORESOURCE_IO)
273 dev->resource[idx].parent = &ioport_resource;
275 dev->resource[idx].parent = &iomem_resource;
278 /* set up host bus linkages */
279 bs = SN_PCIBUS_BUSSOFT(dev->bus);
281 pci_find_slot(SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32,
282 SN_PCIDEV_INFO(dev)->
283 pdi_slot_host_handle & 0xffffffff);
284 SN_PCIDEV_INFO(dev)->pdi_host_pcidev_info =
285 SN_PCIDEV_INFO(host_pci_dev);
286 SN_PCIDEV_INFO(dev)->pdi_linux_pcidev = dev;
287 SN_PCIDEV_INFO(dev)->pdi_pcibus_info = bs;
289 if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
290 SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
292 SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
295 /* Only set up IRQ stuff if this device has a host bus context */
296 if (bs && sn_irq_info->irq_irq) {
297 SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = sn_irq_info;
298 dev->irq = SN_PCIDEV_INFO(dev)->pdi_sn_irq_info->irq_irq;
299 sn_irq_fixup(dev, sn_irq_info);
304 * sn_pci_controller_fixup() - This routine sets up a bus's resources
305 * consistent with the Linux PCI abstraction layer.
307 static void sn_pci_controller_fixup(int segment, int busnum)
312 struct pci_controller *controller;
313 struct pcibus_bussoft *prom_bussoft_ptr;
314 struct hubdev_info *hubdev_info;
316 struct sn_pcibus_provider *provider;
319 sal_get_pcibus_info((u64) segment, (u64) busnum,
320 (u64) ia64_tpa(&prom_bussoft_ptr));
322 return; /* bus # does not exist */
325 prom_bussoft_ptr = __va(prom_bussoft_ptr);
326 controller = sn_alloc_pci_sysdata();
327 /* controller non-zero is BUG'd in sn_alloc_pci_sysdata */
329 bus = pci_scan_bus(busnum, &pci_root_ops, controller);
331 return; /* error, or bus already scanned */
335 * Per-provider fixup. Copies the contents from prom to local
336 * area and links SN_PCIBUS_BUSSOFT().
339 if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES) {
340 return; /* unsupported asic type */
343 provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
344 if (provider == NULL) {
345 return; /* no provider registerd for this asic */
348 provider_soft = NULL;
349 if (provider->bus_fixup) {
350 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr);
353 if (provider_soft == NULL) {
354 return; /* fixup failed or not applicable */
358 * Generic bus fixup goes here. Don't reference prom_bussoft_ptr
362 bus->sysdata = controller;
363 PCI_CONTROLLER(bus)->platform_data = provider_soft;
365 nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
366 cnode = nasid_to_cnodeid(nasid);
367 hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
368 SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
369 &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
373 * Ugly hack to get PCI setup until we have a proper ACPI namespace.
376 #define PCI_BUSES_TO_SCAN 256
378 static int __init sn_pci_init(void)
381 struct pci_dev *pci_dev = NULL;
382 extern void sn_init_cpei_timer(void);
383 #ifdef CONFIG_PROC_FS
384 extern void register_sn_procfs(void);
387 if (!ia64_platform_is("sn2") || IS_RUNNING_ON_SIMULATOR())
391 * prime sn_pci_provider[]. Individial provider init routines will
392 * override their respective default entries.
395 for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
396 sn_pci_provider[i] = &sn_pci_default_provider;
398 pcibr_init_provider();
399 tioca_init_provider();
402 * This is needed to avoid bounce limit checks in the blk layer
404 ia64_max_iommu_merge_mask = ~PAGE_MASK;
406 sn_irq = kmalloc(sizeof(struct sn_irq_info *) * NR_IRQS, GFP_KERNEL);
408 BUG(); /* Canno afford to run out of memory. */
409 memset(sn_irq, 0, sizeof(struct sn_irq_info *) * NR_IRQS);
411 sn_init_cpei_timer();
413 #ifdef CONFIG_PROC_FS
414 register_sn_procfs();
417 for (i = 0; i < PCI_BUSES_TO_SCAN; i++) {
418 sn_pci_controller_fixup(0, i);
422 * Generic Linux PCI Layer has created the pci_bus and pci_dev
423 * structures - time for us to add our SN PLatform specific
428 pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL) {
429 sn_pci_fixup_slot(pci_dev);
432 sn_ioif_inited = 1; /* sn I/O infrastructure now initialized */
438 * hubdev_init_node() - Creates the HUB data structure and link them to it's
439 * own NODE specific data area.
441 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
444 struct hubdev_info *hubdev_info;
446 if (node >= num_online_nodes()) /* Headless/memless IO nodes */
448 (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0),
453 (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node),
456 npda->pdinfo = (void *)hubdev_info;
461 cnodeid_get_geoid(cnodeid_t cnode)
464 struct hubdev_info *hubdev;
466 hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
467 return hubdev->hdi_geoid;
471 subsys_initcall(sn_pci_init);