]>
git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - drivers/ssb/scan.c
2 * Sonics Silicon Backplane
5 * Copyright (C) 2005-2007 Michael Buesch <mb@bu3sch.de>
6 * Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
7 * Copyright (C) 2005 Stefano Brivio <st3@riseup.net>
8 * Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
9 * Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10 * Copyright (C) 2006 Broadcom Corporation.
12 * Licensed under the GNU/GPL. See COPYING for details.
15 #include <linux/ssb/ssb.h>
16 #include <linux/ssb/ssb_regs.h>
17 #include <linux/pci.h>
20 #include <pcmcia/cs_types.h>
21 #include <pcmcia/cs.h>
22 #include <pcmcia/cistpl.h>
23 #include <pcmcia/ds.h>
25 #include "ssb_private.h"
28 const char *ssb_core_name(u16 coreid
)
31 case SSB_DEV_CHIPCOMMON
:
41 case SSB_DEV_ETHERNET
:
42 return "Fast Ethernet";
45 case SSB_DEV_USB11_HOSTDEV
:
46 return "USB 1.1 Hostdev";
49 case SSB_DEV_ILINE100
:
55 case SSB_DEV_INTERNAL_MEM
:
56 return "Internal Memory";
57 case SSB_DEV_MEMC_SDRAM
:
63 case SSB_DEV_MIPS_3302
:
65 case SSB_DEV_USB11_HOST
:
66 return "USB 1.1 Host";
67 case SSB_DEV_USB11_DEV
:
68 return "USB 1.1 Device";
69 case SSB_DEV_USB20_HOST
:
70 return "USB 2.0 Host";
71 case SSB_DEV_USB20_DEV
:
72 return "USB 2.0 Device";
73 case SSB_DEV_SDIO_HOST
:
75 case SSB_DEV_ROBOSWITCH
:
77 case SSB_DEV_PARA_ATA
:
79 case SSB_DEV_SATA_XORDMA
:
80 return "SATA XOR-DMA";
81 case SSB_DEV_ETHERNET_GBIT
:
82 return "GBit Ethernet";
85 case SSB_DEV_MIMO_PHY
:
87 case SSB_DEV_SRAM_CTRLR
:
88 return "SRAM Controller";
89 case SSB_DEV_MINI_MACPHY
:
91 case SSB_DEV_ARM_1176
:
93 case SSB_DEV_ARM_7TDMI
:
99 static u16
pcidev_to_chipid(struct pci_dev
*pci_dev
)
101 u16 chipid_fallback
= 0;
103 switch (pci_dev
->device
) {
105 chipid_fallback
= 0x4301;
107 case 0x4305 ... 0x4307:
108 chipid_fallback
= 0x4307;
111 chipid_fallback
= 0x4402;
113 case 0x4610 ... 0x4615:
114 chipid_fallback
= 0x4610;
116 case 0x4710 ... 0x4715:
117 chipid_fallback
= 0x4710;
119 case 0x4320 ... 0x4325:
120 chipid_fallback
= 0x4309;
122 case PCI_DEVICE_ID_BCM4401
:
123 case PCI_DEVICE_ID_BCM4401B0
:
124 case PCI_DEVICE_ID_BCM4401B1
:
125 chipid_fallback
= 0x4401;
128 ssb_printk(KERN_ERR PFX
129 "PCI-ID not in fallback list\n");
132 return chipid_fallback
;
135 static u8
chipid_to_nrcores(u16 chipid
)
155 ssb_printk(KERN_ERR PFX
156 "CHIPID not in nrcores fallback list\n");
162 static u32
scan_read32(struct ssb_bus
*bus
, u8 current_coreidx
,
165 switch (bus
->bustype
) {
166 case SSB_BUSTYPE_SSB
:
167 offset
+= current_coreidx
* SSB_CORE_SIZE
;
169 case SSB_BUSTYPE_PCI
:
171 case SSB_BUSTYPE_PCMCIA
:
172 if (offset
>= 0x800) {
173 ssb_pcmcia_switch_segment(bus
, 1);
176 ssb_pcmcia_switch_segment(bus
, 0);
179 return readl(bus
->mmio
+ offset
);
182 static int scan_switchcore(struct ssb_bus
*bus
, u8 coreidx
)
184 switch (bus
->bustype
) {
185 case SSB_BUSTYPE_SSB
:
187 case SSB_BUSTYPE_PCI
:
188 return ssb_pci_switch_coreidx(bus
, coreidx
);
189 case SSB_BUSTYPE_PCMCIA
:
190 return ssb_pcmcia_switch_coreidx(bus
, coreidx
);
195 void ssb_iounmap(struct ssb_bus
*bus
)
197 switch (bus
->bustype
) {
198 case SSB_BUSTYPE_SSB
:
199 case SSB_BUSTYPE_PCMCIA
:
202 case SSB_BUSTYPE_PCI
:
203 #ifdef CONFIG_SSB_PCIHOST
204 pci_iounmap(bus
->host_pci
, bus
->mmio
);
206 SSB_BUG_ON(1); /* Can't reach this code. */
211 bus
->mapped_device
= NULL
;
214 static void __iomem
*ssb_ioremap(struct ssb_bus
*bus
,
215 unsigned long baseaddr
)
217 void __iomem
*mmio
= NULL
;
219 switch (bus
->bustype
) {
220 case SSB_BUSTYPE_SSB
:
221 /* Only map the first core for now. */
223 case SSB_BUSTYPE_PCMCIA
:
224 mmio
= ioremap(baseaddr
, SSB_CORE_SIZE
);
226 case SSB_BUSTYPE_PCI
:
227 #ifdef CONFIG_SSB_PCIHOST
228 mmio
= pci_iomap(bus
->host_pci
, 0, ~0UL);
230 SSB_BUG_ON(1); /* Can't reach this code. */
238 static int we_support_multiple_80211_cores(struct ssb_bus
*bus
)
240 /* More than one 802.11 core is only supported by special chips.
241 * There are chips with two 802.11 cores, but with dangling
242 * pins on the second core. Be careful and reject them here.
245 #ifdef CONFIG_SSB_PCIHOST
246 if (bus
->bustype
== SSB_BUSTYPE_PCI
) {
247 if (bus
->host_pci
->vendor
== PCI_VENDOR_ID_BROADCOM
&&
248 bus
->host_pci
->device
== 0x4324)
251 #endif /* CONFIG_SSB_PCIHOST */
255 int ssb_bus_scan(struct ssb_bus
*bus
,
256 unsigned long baseaddr
)
260 u32 idhi
, cc
, rev
, tmp
;
262 struct ssb_device
*dev
;
263 int nr_80211_cores
= 0;
265 mmio
= ssb_ioremap(bus
, baseaddr
);
270 err
= scan_switchcore(bus
, 0); /* Switch to first core */
274 idhi
= scan_read32(bus
, 0, SSB_IDHIGH
);
275 cc
= (idhi
& SSB_IDHIGH_CC
) >> SSB_IDHIGH_CC_SHIFT
;
276 rev
= (idhi
& SSB_IDHIGH_RCLO
);
277 rev
|= (idhi
& SSB_IDHIGH_RCHI
) >> SSB_IDHIGH_RCHI_SHIFT
;
280 if (cc
== SSB_DEV_CHIPCOMMON
) {
281 tmp
= scan_read32(bus
, 0, SSB_CHIPCO_CHIPID
);
283 bus
->chip_id
= (tmp
& SSB_CHIPCO_IDMASK
);
284 bus
->chip_rev
= (tmp
& SSB_CHIPCO_REVMASK
) >>
286 bus
->chip_package
= (tmp
& SSB_CHIPCO_PACKMASK
) >>
287 SSB_CHIPCO_PACKSHIFT
;
289 bus
->nr_devices
= (tmp
& SSB_CHIPCO_NRCORESMASK
) >>
290 SSB_CHIPCO_NRCORESSHIFT
;
292 tmp
= scan_read32(bus
, 0, SSB_CHIPCO_CAP
);
293 bus
->chipco
.capabilities
= tmp
;
295 if (bus
->bustype
== SSB_BUSTYPE_PCI
) {
296 bus
->chip_id
= pcidev_to_chipid(bus
->host_pci
);
297 pci_read_config_word(bus
->host_pci
, PCI_REVISION_ID
,
299 bus
->chip_package
= 0;
301 bus
->chip_id
= 0x4710;
303 bus
->chip_package
= 0;
306 if (!bus
->nr_devices
)
307 bus
->nr_devices
= chipid_to_nrcores(bus
->chip_id
);
308 if (bus
->nr_devices
> ARRAY_SIZE(bus
->devices
)) {
309 ssb_printk(KERN_ERR PFX
310 "More than %d ssb cores found (%d)\n",
311 SSB_MAX_NR_CORES
, bus
->nr_devices
);
314 if (bus
->bustype
== SSB_BUSTYPE_SSB
) {
315 /* Now that we know the number of cores,
316 * remap the whole IO space for all cores.
320 mmio
= ioremap(baseaddr
, SSB_CORE_SIZE
* bus
->nr_devices
);
326 /* Fetch basic information about each core/device */
327 for (i
= 0, dev_i
= 0; i
< bus
->nr_devices
; i
++) {
328 err
= scan_switchcore(bus
, i
);
331 dev
= &(bus
->devices
[dev_i
]);
333 idhi
= scan_read32(bus
, i
, SSB_IDHIGH
);
334 dev
->id
.coreid
= (idhi
& SSB_IDHIGH_CC
) >> SSB_IDHIGH_CC_SHIFT
;
335 dev
->id
.revision
= (idhi
& SSB_IDHIGH_RCLO
);
336 dev
->id
.revision
|= (idhi
& SSB_IDHIGH_RCHI
) >> SSB_IDHIGH_RCHI_SHIFT
;
337 dev
->id
.vendor
= (idhi
& SSB_IDHIGH_VC
) >> SSB_IDHIGH_VC_SHIFT
;
342 ssb_dprintk(KERN_INFO PFX
344 "(cc 0x%03X, rev 0x%02X, vendor 0x%04X)\n",
345 i
, ssb_core_name(dev
->id
.coreid
),
346 dev
->id
.coreid
, dev
->id
.revision
, dev
->id
.vendor
);
348 switch (dev
->id
.coreid
) {
351 if (nr_80211_cores
> 1) {
352 if (!we_support_multiple_80211_cores(bus
)) {
353 ssb_dprintk(KERN_INFO PFX
"Ignoring additional "
360 #ifdef CONFIG_SSB_DRIVER_EXTIF
361 if (bus
->extif
.dev
) {
362 ssb_printk(KERN_WARNING PFX
363 "WARNING: Multiple EXTIFs found\n");
366 bus
->extif
.dev
= dev
;
367 #endif /* CONFIG_SSB_DRIVER_EXTIF */
369 case SSB_DEV_CHIPCOMMON
:
370 if (bus
->chipco
.dev
) {
371 ssb_printk(KERN_WARNING PFX
372 "WARNING: Multiple ChipCommon found\n");
375 bus
->chipco
.dev
= dev
;
378 case SSB_DEV_MIPS_3302
:
379 #ifdef CONFIG_SSB_DRIVER_MIPS
380 if (bus
->mipscore
.dev
) {
381 ssb_printk(KERN_WARNING PFX
382 "WARNING: Multiple MIPS cores found\n");
385 bus
->mipscore
.dev
= dev
;
386 #endif /* CONFIG_SSB_DRIVER_MIPS */
390 #ifdef CONFIG_SSB_DRIVER_PCICORE
391 if (bus
->pcicore
.dev
) {
392 ssb_printk(KERN_WARNING PFX
393 "WARNING: Multiple PCI(E) cores found\n");
396 bus
->pcicore
.dev
= dev
;
397 #endif /* CONFIG_SSB_DRIVER_PCICORE */
405 bus
->nr_devices
= dev_i
;