diff options
author | Albert Herranz <albert_herranz@yahoo.es> | 2009-09-08 13:30:12 -0400 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2009-09-09 11:19:00 -0400 |
commit | 24ea602e183ca20a7577ebe253323d0e5d0f9847 (patch) | |
tree | 9cd9c0b3832cac2f155e633fbed1ce2bf3331f9a /drivers/ssb | |
parent | f020979d5d7c9816c071d0aedf60a889fa4fae40 (diff) |
ssb: Implement SDIO host bus support
Add support for communicating with a Sonics Silicon Backplane through a
SDIO interface, as found in the Nintendo Wii WLAN daughter card.
The Nintendo Wii WLAN card includes a custom Broadcom 4318 chip with
a SDIO host interface.
Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/ssb')
-rw-r--r-- | drivers/ssb/Kconfig | 14 | ||||
-rw-r--r-- | drivers/ssb/Makefile | 1 | ||||
-rw-r--r-- | drivers/ssb/main.c | 58 | ||||
-rw-r--r-- | drivers/ssb/scan.c | 11 | ||||
-rw-r--r-- | drivers/ssb/sdio.c | 610 | ||||
-rw-r--r-- | drivers/ssb/ssb_private.h | 40 |
6 files changed, 733 insertions, 1 deletions
diff --git a/drivers/ssb/Kconfig b/drivers/ssb/Kconfig index 540a2948596..2d8cc455dbc 100644 --- a/drivers/ssb/Kconfig +++ b/drivers/ssb/Kconfig | |||
@@ -66,6 +66,20 @@ config SSB_PCMCIAHOST | |||
66 | 66 | ||
67 | If unsure, say N | 67 | If unsure, say N |
68 | 68 | ||
69 | config SSB_SDIOHOST_POSSIBLE | ||
70 | bool | ||
71 | depends on SSB && (MMC = y || MMC = SSB) | ||
72 | default y | ||
73 | |||
74 | config SSB_SDIOHOST | ||
75 | bool "Support for SSB on SDIO-bus host" | ||
76 | depends on SSB_SDIOHOST_POSSIBLE | ||
77 | help | ||
78 | Support for a Sonics Silicon Backplane on top | ||
79 | of a SDIO device. | ||
80 | |||
81 | If unsure, say N | ||
82 | |||
69 | config SSB_SILENT | 83 | config SSB_SILENT |
70 | bool "No SSB kernel messages" | 84 | bool "No SSB kernel messages" |
71 | depends on SSB && EMBEDDED | 85 | depends on SSB && EMBEDDED |
diff --git a/drivers/ssb/Makefile b/drivers/ssb/Makefile index cfbb74f2982..656e58b9261 100644 --- a/drivers/ssb/Makefile +++ b/drivers/ssb/Makefile | |||
@@ -6,6 +6,7 @@ ssb-$(CONFIG_SSB_SPROM) += sprom.o | |||
6 | # host support | 6 | # host support |
7 | ssb-$(CONFIG_SSB_PCIHOST) += pci.o pcihost_wrapper.o | 7 | ssb-$(CONFIG_SSB_PCIHOST) += pci.o pcihost_wrapper.o |
8 | ssb-$(CONFIG_SSB_PCMCIAHOST) += pcmcia.o | 8 | ssb-$(CONFIG_SSB_PCMCIAHOST) += pcmcia.o |
9 | ssb-$(CONFIG_SSB_SDIOHOST) += sdio.o | ||
9 | 10 | ||
10 | # built-in drivers | 11 | # built-in drivers |
11 | ssb-y += driver_chipcommon.o | 12 | ssb-y += driver_chipcommon.o |
diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c index 8d16cb258cc..579b114be41 100644 --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c | |||
@@ -17,6 +17,7 @@ | |||
17 | #include <linux/ssb/ssb_driver_gige.h> | 17 | #include <linux/ssb/ssb_driver_gige.h> |
18 | #include <linux/dma-mapping.h> | 18 | #include <linux/dma-mapping.h> |
19 | #include <linux/pci.h> | 19 | #include <linux/pci.h> |
20 | #include <linux/mmc/sdio_func.h> | ||
20 | 21 | ||
21 | #include <pcmcia/cs_types.h> | 22 | #include <pcmcia/cs_types.h> |
22 | #include <pcmcia/cs.h> | 23 | #include <pcmcia/cs.h> |
@@ -88,6 +89,25 @@ found: | |||
88 | } | 89 | } |
89 | #endif /* CONFIG_SSB_PCMCIAHOST */ | 90 | #endif /* CONFIG_SSB_PCMCIAHOST */ |
90 | 91 | ||
92 | #ifdef CONFIG_SSB_SDIOHOST | ||
93 | struct ssb_bus *ssb_sdio_func_to_bus(struct sdio_func *func) | ||
94 | { | ||
95 | struct ssb_bus *bus; | ||
96 | |||
97 | ssb_buses_lock(); | ||
98 | list_for_each_entry(bus, &buses, list) { | ||
99 | if (bus->bustype == SSB_BUSTYPE_SDIO && | ||
100 | bus->host_sdio == func) | ||
101 | goto found; | ||
102 | } | ||
103 | bus = NULL; | ||
104 | found: | ||
105 | ssb_buses_unlock(); | ||
106 | |||
107 | return bus; | ||
108 | } | ||
109 | #endif /* CONFIG_SSB_SDIOHOST */ | ||
110 | |||
91 | int ssb_for_each_bus_call(unsigned long data, | 111 | int ssb_for_each_bus_call(unsigned long data, |
92 | int (*func)(struct ssb_bus *bus, unsigned long data)) | 112 | int (*func)(struct ssb_bus *bus, unsigned long data)) |
93 | { | 113 | { |
@@ -469,6 +489,12 @@ static int ssb_devices_register(struct ssb_bus *bus) | |||
469 | dev->parent = &bus->host_pcmcia->dev; | 489 | dev->parent = &bus->host_pcmcia->dev; |
470 | #endif | 490 | #endif |
471 | break; | 491 | break; |
492 | case SSB_BUSTYPE_SDIO: | ||
493 | #ifdef CONFIG_SSB_SDIO | ||
494 | sdev->irq = bus->host_sdio->dev.irq; | ||
495 | dev->parent = &bus->host_sdio->dev; | ||
496 | #endif | ||
497 | break; | ||
472 | case SSB_BUSTYPE_SSB: | 498 | case SSB_BUSTYPE_SSB: |
473 | dev->dma_mask = &dev->coherent_dma_mask; | 499 | dev->dma_mask = &dev->coherent_dma_mask; |
474 | break; | 500 | break; |
@@ -724,12 +750,18 @@ static int ssb_bus_register(struct ssb_bus *bus, | |||
724 | err = ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 1); | 750 | err = ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 1); |
725 | if (err) | 751 | if (err) |
726 | goto out; | 752 | goto out; |
753 | |||
754 | /* Init SDIO-host device (if any), before the scan */ | ||
755 | err = ssb_sdio_init(bus); | ||
756 | if (err) | ||
757 | goto err_disable_xtal; | ||
758 | |||
727 | ssb_buses_lock(); | 759 | ssb_buses_lock(); |
728 | bus->busnumber = next_busnumber; | 760 | bus->busnumber = next_busnumber; |
729 | /* Scan for devices (cores) */ | 761 | /* Scan for devices (cores) */ |
730 | err = ssb_bus_scan(bus, baseaddr); | 762 | err = ssb_bus_scan(bus, baseaddr); |
731 | if (err) | 763 | if (err) |
732 | goto err_disable_xtal; | 764 | goto err_sdio_exit; |
733 | 765 | ||
734 | /* Init PCI-host device (if any) */ | 766 | /* Init PCI-host device (if any) */ |
735 | err = ssb_pci_init(bus); | 767 | err = ssb_pci_init(bus); |
@@ -776,6 +808,8 @@ err_pci_exit: | |||
776 | ssb_pci_exit(bus); | 808 | ssb_pci_exit(bus); |
777 | err_unmap: | 809 | err_unmap: |
778 | ssb_iounmap(bus); | 810 | ssb_iounmap(bus); |
811 | err_sdio_exit: | ||
812 | ssb_sdio_exit(bus); | ||
779 | err_disable_xtal: | 813 | err_disable_xtal: |
780 | ssb_buses_unlock(); | 814 | ssb_buses_unlock(); |
781 | ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 0); | 815 | ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 0); |
@@ -825,6 +859,28 @@ int ssb_bus_pcmciabus_register(struct ssb_bus *bus, | |||
825 | EXPORT_SYMBOL(ssb_bus_pcmciabus_register); | 859 | EXPORT_SYMBOL(ssb_bus_pcmciabus_register); |
826 | #endif /* CONFIG_SSB_PCMCIAHOST */ | 860 | #endif /* CONFIG_SSB_PCMCIAHOST */ |
827 | 861 | ||
862 | #ifdef CONFIG_SSB_SDIOHOST | ||
863 | int ssb_bus_sdiobus_register(struct ssb_bus *bus, struct sdio_func *func, | ||
864 | unsigned int quirks) | ||
865 | { | ||
866 | int err; | ||
867 | |||
868 | bus->bustype = SSB_BUSTYPE_SDIO; | ||
869 | bus->host_sdio = func; | ||
870 | bus->ops = &ssb_sdio_ops; | ||
871 | bus->quirks = quirks; | ||
872 | |||
873 | err = ssb_bus_register(bus, ssb_sdio_get_invariants, ~0); | ||
874 | if (!err) { | ||
875 | ssb_printk(KERN_INFO PFX "Sonics Silicon Backplane found on " | ||
876 | "SDIO device %s\n", sdio_func_id(func)); | ||
877 | } | ||
878 | |||
879 | return err; | ||
880 | } | ||
881 | EXPORT_SYMBOL(ssb_bus_sdiobus_register); | ||
882 | #endif /* CONFIG_SSB_PCMCIAHOST */ | ||
883 | |||
828 | int ssb_bus_ssbbus_register(struct ssb_bus *bus, | 884 | int ssb_bus_ssbbus_register(struct ssb_bus *bus, |
829 | unsigned long baseaddr, | 885 | unsigned long baseaddr, |
830 | ssb_invariants_func_t get_invariants) | 886 | ssb_invariants_func_t get_invariants) |
diff --git a/drivers/ssb/scan.c b/drivers/ssb/scan.c index 63ee5cfbefb..b74212d698c 100644 --- a/drivers/ssb/scan.c +++ b/drivers/ssb/scan.c | |||
@@ -175,6 +175,9 @@ static u32 scan_read32(struct ssb_bus *bus, u8 current_coreidx, | |||
175 | } else | 175 | } else |
176 | ssb_pcmcia_switch_segment(bus, 0); | 176 | ssb_pcmcia_switch_segment(bus, 0); |
177 | break; | 177 | break; |
178 | case SSB_BUSTYPE_SDIO: | ||
179 | offset += current_coreidx * SSB_CORE_SIZE; | ||
180 | return ssb_sdio_scan_read32(bus, offset); | ||
178 | } | 181 | } |
179 | return readl(bus->mmio + offset); | 182 | return readl(bus->mmio + offset); |
180 | } | 183 | } |
@@ -188,6 +191,8 @@ static int scan_switchcore(struct ssb_bus *bus, u8 coreidx) | |||
188 | return ssb_pci_switch_coreidx(bus, coreidx); | 191 | return ssb_pci_switch_coreidx(bus, coreidx); |
189 | case SSB_BUSTYPE_PCMCIA: | 192 | case SSB_BUSTYPE_PCMCIA: |
190 | return ssb_pcmcia_switch_coreidx(bus, coreidx); | 193 | return ssb_pcmcia_switch_coreidx(bus, coreidx); |
194 | case SSB_BUSTYPE_SDIO: | ||
195 | return ssb_sdio_scan_switch_coreidx(bus, coreidx); | ||
191 | } | 196 | } |
192 | return 0; | 197 | return 0; |
193 | } | 198 | } |
@@ -206,6 +211,8 @@ void ssb_iounmap(struct ssb_bus *bus) | |||
206 | SSB_BUG_ON(1); /* Can't reach this code. */ | 211 | SSB_BUG_ON(1); /* Can't reach this code. */ |
207 | #endif | 212 | #endif |
208 | break; | 213 | break; |
214 | case SSB_BUSTYPE_SDIO: | ||
215 | break; | ||
209 | } | 216 | } |
210 | bus->mmio = NULL; | 217 | bus->mmio = NULL; |
211 | bus->mapped_device = NULL; | 218 | bus->mapped_device = NULL; |
@@ -230,6 +237,10 @@ static void __iomem *ssb_ioremap(struct ssb_bus *bus, | |||
230 | SSB_BUG_ON(1); /* Can't reach this code. */ | 237 | SSB_BUG_ON(1); /* Can't reach this code. */ |
231 | #endif | 238 | #endif |
232 | break; | 239 | break; |
240 | case SSB_BUSTYPE_SDIO: | ||
241 | /* Nothing to ioremap in the SDIO case, just fake it */ | ||
242 | mmio = (void __iomem *)baseaddr; | ||
243 | break; | ||
233 | } | 244 | } |
234 | 245 | ||
235 | return mmio; | 246 | return mmio; |
diff --git a/drivers/ssb/sdio.c b/drivers/ssb/sdio.c new file mode 100644 index 00000000000..114051056b5 --- /dev/null +++ b/drivers/ssb/sdio.c | |||
@@ -0,0 +1,610 @@ | |||
1 | /* | ||
2 | * Sonics Silicon Backplane | ||
3 | * SDIO-Hostbus related functions | ||
4 | * | ||
5 | * Copyright 2009 Albert Herranz <albert_herranz@yahoo.es> | ||
6 | * | ||
7 | * Based on drivers/ssb/pcmcia.c | ||
8 | * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> | ||
9 | * Copyright 2007-2008 Michael Buesch <mb@bu3sch.de> | ||
10 | * | ||
11 | * Licensed under the GNU/GPL. See COPYING for details. | ||
12 | * | ||
13 | */ | ||
14 | |||
15 | #include <linux/ssb/ssb.h> | ||
16 | #include <linux/delay.h> | ||
17 | #include <linux/io.h> | ||
18 | #include <linux/etherdevice.h> | ||
19 | #include <linux/mmc/sdio_func.h> | ||
20 | |||
21 | #include "ssb_private.h" | ||
22 | |||
23 | /* Define the following to 1 to enable a printk on each coreswitch. */ | ||
24 | #define SSB_VERBOSE_SDIOCORESWITCH_DEBUG 1 | ||
25 | |||
26 | |||
27 | /* Hardware invariants CIS tuples */ | ||
28 | #define SSB_SDIO_CIS 0x80 | ||
29 | #define SSB_SDIO_CIS_SROMREV 0x00 | ||
30 | #define SSB_SDIO_CIS_ID 0x01 | ||
31 | #define SSB_SDIO_CIS_BOARDREV 0x02 | ||
32 | #define SSB_SDIO_CIS_PA 0x03 | ||
33 | #define SSB_SDIO_CIS_PA_PA0B0_LO 0 | ||
34 | #define SSB_SDIO_CIS_PA_PA0B0_HI 1 | ||
35 | #define SSB_SDIO_CIS_PA_PA0B1_LO 2 | ||
36 | #define SSB_SDIO_CIS_PA_PA0B1_HI 3 | ||
37 | #define SSB_SDIO_CIS_PA_PA0B2_LO 4 | ||
38 | #define SSB_SDIO_CIS_PA_PA0B2_HI 5 | ||
39 | #define SSB_SDIO_CIS_PA_ITSSI 6 | ||
40 | #define SSB_SDIO_CIS_PA_MAXPOW 7 | ||
41 | #define SSB_SDIO_CIS_OEMNAME 0x04 | ||
42 | #define SSB_SDIO_CIS_CCODE 0x05 | ||
43 | #define SSB_SDIO_CIS_ANTENNA 0x06 | ||
44 | #define SSB_SDIO_CIS_ANTGAIN 0x07 | ||
45 | #define SSB_SDIO_CIS_BFLAGS 0x08 | ||
46 | #define SSB_SDIO_CIS_LEDS 0x09 | ||
47 | |||
48 | #define CISTPL_FUNCE_LAN_NODE_ID 0x04 /* same as in PCMCIA */ | ||
49 | |||
50 | |||
51 | /* | ||
52 | * Function 1 miscellaneous registers. | ||
53 | * | ||
54 | * Definitions match src/include/sbsdio.h from the | ||
55 | * Android Open Source Project | ||
56 | * http://android.git.kernel.org/?p=platform/system/wlan/broadcom.git | ||
57 | * | ||
58 | */ | ||
59 | #define SBSDIO_FUNC1_SBADDRLOW 0x1000a /* SB Address window Low (b15) */ | ||
60 | #define SBSDIO_FUNC1_SBADDRMID 0x1000b /* SB Address window Mid (b23-b16) */ | ||
61 | #define SBSDIO_FUNC1_SBADDRHIGH 0x1000c /* SB Address window High (b24-b31) */ | ||
62 | |||
63 | /* valid bits in SBSDIO_FUNC1_SBADDRxxx regs */ | ||
64 | #define SBSDIO_SBADDRLOW_MASK 0x80 /* Valid address bits in SBADDRLOW */ | ||
65 | #define SBSDIO_SBADDRMID_MASK 0xff /* Valid address bits in SBADDRMID */ | ||
66 | #define SBSDIO_SBADDRHIGH_MASK 0xff /* Valid address bits in SBADDRHIGH */ | ||
67 | |||
68 | #define SBSDIO_SB_OFT_ADDR_MASK 0x7FFF /* sb offset addr is <= 15 bits, 32k */ | ||
69 | |||
70 | /* REVISIT: this flag doesn't seem to matter */ | ||
71 | #define SBSDIO_SB_ACCESS_2_4B_FLAG 0x8000 /* forces 32-bit SB access */ | ||
72 | |||
73 | |||
74 | /* | ||
75 | * Address map within the SDIO function address space (128K). | ||
76 | * | ||
77 | * Start End Description | ||
78 | * ------- ------- ------------------------------------------ | ||
79 | * 0x00000 0x0ffff selected backplane address window (64K) | ||
80 | * 0x10000 0x1ffff backplane control registers (max 64K) | ||
81 | * | ||
82 | * The current address window is configured by writing to registers | ||
83 | * SBADDRLOW, SBADDRMID and SBADDRHIGH. | ||
84 | * | ||
85 | * In order to access the contents of a 32-bit Silicon Backplane address | ||
86 | * the backplane address window must be first loaded with the highest | ||
87 | * 16 bits of the target address. Then, an access must be done to the | ||
88 | * SDIO function address space using the lower 15 bits of the address. | ||
89 | * Bit 15 of the address must be set when doing 32 bit accesses. | ||
90 | * | ||
91 | * 10987654321098765432109876543210 | ||
92 | * WWWWWWWWWWWWWWWWW SB Address Window | ||
93 | * OOOOOOOOOOOOOOOO Offset within SB Address Window | ||
94 | * a 32-bit access flag | ||
95 | */ | ||
96 | |||
97 | |||
98 | /* | ||
99 | * SSB I/O via SDIO. | ||
100 | * | ||
101 | * NOTE: SDIO address @addr is 17 bits long (SDIO address space is 128K). | ||
102 | */ | ||
103 | |||
104 | static inline struct device *ssb_sdio_dev(struct ssb_bus *bus) | ||
105 | { | ||
106 | return &bus->host_sdio->dev; | ||
107 | } | ||
108 | |||
109 | /* host claimed */ | ||
110 | static int ssb_sdio_writeb(struct ssb_bus *bus, unsigned int addr, u8 val) | ||
111 | { | ||
112 | int error = 0; | ||
113 | |||
114 | sdio_writeb(bus->host_sdio, val, addr, &error); | ||
115 | if (unlikely(error)) { | ||
116 | dev_dbg(ssb_sdio_dev(bus), "%08X <- %02x, error %d\n", | ||
117 | addr, val, error); | ||
118 | } | ||
119 | |||
120 | return error; | ||
121 | } | ||
122 | |||
123 | #if 0 | ||
124 | static u8 ssb_sdio_readb(struct ssb_bus *bus, unsigned int addr) | ||
125 | { | ||
126 | u8 val; | ||
127 | int error = 0; | ||
128 | |||
129 | val = sdio_readb(bus->host_sdio, addr, &error); | ||
130 | if (unlikely(error)) { | ||
131 | dev_dbg(ssb_sdio_dev(bus), "%08X -> %02x, error %d\n", | ||
132 | addr, val, error); | ||
133 | } | ||
134 | |||
135 | return val; | ||
136 | } | ||
137 | #endif | ||
138 | |||
139 | /* host claimed */ | ||
140 | static int ssb_sdio_set_sbaddr_window(struct ssb_bus *bus, u32 address) | ||
141 | { | ||
142 | int error; | ||
143 | |||
144 | error = ssb_sdio_writeb(bus, SBSDIO_FUNC1_SBADDRLOW, | ||
145 | (address >> 8) & SBSDIO_SBADDRLOW_MASK); | ||
146 | if (error) | ||
147 | goto out; | ||
148 | error = ssb_sdio_writeb(bus, SBSDIO_FUNC1_SBADDRMID, | ||
149 | (address >> 16) & SBSDIO_SBADDRMID_MASK); | ||
150 | if (error) | ||
151 | goto out; | ||
152 | error = ssb_sdio_writeb(bus, SBSDIO_FUNC1_SBADDRHIGH, | ||
153 | (address >> 24) & SBSDIO_SBADDRHIGH_MASK); | ||
154 | if (error) | ||
155 | goto out; | ||
156 | bus->sdio_sbaddr = address; | ||
157 | out: | ||
158 | if (error) { | ||
159 | dev_dbg(ssb_sdio_dev(bus), "failed to set address window" | ||
160 | " to 0x%08x, error %d\n", address, error); | ||
161 | } | ||
162 | |||
163 | return error; | ||
164 | } | ||
165 | |||
166 | /* for enumeration use only */ | ||
167 | u32 ssb_sdio_scan_read32(struct ssb_bus *bus, u16 offset) | ||
168 | { | ||
169 | u32 val; | ||
170 | int error; | ||
171 | |||
172 | sdio_claim_host(bus->host_sdio); | ||
173 | val = sdio_readl(bus->host_sdio, offset, &error); | ||
174 | sdio_release_host(bus->host_sdio); | ||
175 | if (unlikely(error)) { | ||
176 | dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %08x, error %d\n", | ||
177 | bus->sdio_sbaddr >> 16, offset, val, error); | ||
178 | } | ||
179 | |||
180 | return val; | ||
181 | } | ||
182 | |||
183 | /* for enumeration use only */ | ||
184 | int ssb_sdio_scan_switch_coreidx(struct ssb_bus *bus, u8 coreidx) | ||
185 | { | ||
186 | u32 sbaddr; | ||
187 | int error; | ||
188 | |||
189 | sbaddr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE; | ||
190 | sdio_claim_host(bus->host_sdio); | ||
191 | error = ssb_sdio_set_sbaddr_window(bus, sbaddr); | ||
192 | sdio_release_host(bus->host_sdio); | ||
193 | if (error) { | ||
194 | dev_err(ssb_sdio_dev(bus), "failed to switch to core %u," | ||
195 | " error %d\n", coreidx, error); | ||
196 | goto out; | ||
197 | } | ||
198 | out: | ||
199 | return error; | ||
200 | } | ||
201 | |||
202 | /* host must be already claimed */ | ||
203 | int ssb_sdio_switch_core(struct ssb_bus *bus, struct ssb_device *dev) | ||
204 | { | ||
205 | u8 coreidx = dev->core_index; | ||
206 | u32 sbaddr; | ||
207 | int error = 0; | ||
208 | |||
209 | sbaddr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE; | ||
210 | if (unlikely(bus->sdio_sbaddr != sbaddr)) { | ||
211 | #if SSB_VERBOSE_SDIOCORESWITCH_DEBUG | ||
212 | dev_info(ssb_sdio_dev(bus), | ||
213 | "switching to %s core, index %d\n", | ||
214 | ssb_core_name(dev->id.coreid), coreidx); | ||
215 | #endif | ||
216 | error = ssb_sdio_set_sbaddr_window(bus, sbaddr); | ||
217 | if (error) { | ||
218 | dev_dbg(ssb_sdio_dev(bus), "failed to switch to" | ||
219 | " core %u, error %d\n", coreidx, error); | ||
220 | goto out; | ||
221 | } | ||
222 | bus->mapped_device = dev; | ||
223 | } | ||
224 | |||
225 | out: | ||
226 | return error; | ||
227 | } | ||
228 | |||
229 | static u8 ssb_sdio_read8(struct ssb_device *dev, u16 offset) | ||
230 | { | ||
231 | struct ssb_bus *bus = dev->bus; | ||
232 | u8 val = 0xff; | ||
233 | int error = 0; | ||
234 | |||
235 | sdio_claim_host(bus->host_sdio); | ||
236 | if (unlikely(ssb_sdio_switch_core(bus, dev))) | ||
237 | goto out; | ||
238 | offset |= bus->sdio_sbaddr & 0xffff; | ||
239 | offset &= SBSDIO_SB_OFT_ADDR_MASK; | ||
240 | val = sdio_readb(bus->host_sdio, offset, &error); | ||
241 | if (error) { | ||
242 | dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %02x, error %d\n", | ||
243 | bus->sdio_sbaddr >> 16, offset, val, error); | ||
244 | } | ||
245 | out: | ||
246 | sdio_release_host(bus->host_sdio); | ||
247 | |||
248 | return val; | ||
249 | } | ||
250 | |||
251 | static u16 ssb_sdio_read16(struct ssb_device *dev, u16 offset) | ||
252 | { | ||
253 | struct ssb_bus *bus = dev->bus; | ||
254 | u16 val = 0xffff; | ||
255 | int error = 0; | ||
256 | |||
257 | sdio_claim_host(bus->host_sdio); | ||
258 | if (unlikely(ssb_sdio_switch_core(bus, dev))) | ||
259 | goto out; | ||
260 | offset |= bus->sdio_sbaddr & 0xffff; | ||
261 | offset &= SBSDIO_SB_OFT_ADDR_MASK; | ||
262 | val = sdio_readw(bus->host_sdio, offset, &error); | ||
263 | if (error) { | ||
264 | dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %04x, error %d\n", | ||
265 | bus->sdio_sbaddr >> 16, offset, val, error); | ||
266 | } | ||
267 | out: | ||
268 | sdio_release_host(bus->host_sdio); | ||
269 | |||
270 | return val; | ||
271 | } | ||
272 | |||
273 | static u32 ssb_sdio_read32(struct ssb_device *dev, u16 offset) | ||
274 | { | ||
275 | struct ssb_bus *bus = dev->bus; | ||
276 | u32 val = 0xffffffff; | ||
277 | int error = 0; | ||
278 | |||
279 | sdio_claim_host(bus->host_sdio); | ||
280 | if (unlikely(ssb_sdio_switch_core(bus, dev))) | ||
281 | goto out; | ||
282 | offset |= bus->sdio_sbaddr & 0xffff; | ||
283 | offset &= SBSDIO_SB_OFT_ADDR_MASK; | ||
284 | offset |= SBSDIO_SB_ACCESS_2_4B_FLAG; /* 32 bit data access */ | ||
285 | val = sdio_readl(bus->host_sdio, offset, &error); | ||
286 | if (error) { | ||
287 | dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %08x, error %d\n", | ||
288 | bus->sdio_sbaddr >> 16, offset, val, error); | ||
289 | } | ||
290 | out: | ||
291 | sdio_release_host(bus->host_sdio); | ||
292 | |||
293 | return val; | ||
294 | } | ||
295 | |||
296 | #ifdef CONFIG_SSB_BLOCKIO | ||
297 | static void ssb_sdio_block_read(struct ssb_device *dev, void *buffer, | ||
298 | size_t count, u16 offset, u8 reg_width) | ||
299 | { | ||
300 | size_t saved_count = count; | ||
301 | struct ssb_bus *bus = dev->bus; | ||
302 | int error = 0; | ||
303 | |||
304 | sdio_claim_host(bus->host_sdio); | ||
305 | if (unlikely(ssb_sdio_switch_core(bus, dev))) { | ||
306 | error = -EIO; | ||
307 | memset(buffer, 0xff, count); | ||
308 | goto err_out; | ||
309 | } | ||
310 | offset |= bus->sdio_sbaddr & 0xffff; | ||
311 | offset &= SBSDIO_SB_OFT_ADDR_MASK; | ||
312 | |||
313 | switch (reg_width) { | ||
314 | case sizeof(u8): { | ||
315 | error = sdio_readsb(bus->host_sdio, buffer, offset, count); | ||
316 | break; | ||
317 | } | ||
318 | case sizeof(u16): { | ||
319 | SSB_WARN_ON(count & 1); | ||
320 | error = sdio_readsb(bus->host_sdio, buffer, offset, count); | ||
321 | break; | ||
322 | } | ||
323 | case sizeof(u32): { | ||
324 | SSB_WARN_ON(count & 3); | ||
325 | offset |= SBSDIO_SB_ACCESS_2_4B_FLAG; /* 32 bit data access */ | ||
326 | error = sdio_readsb(bus->host_sdio, buffer, offset, count); | ||
327 | break; | ||
328 | } | ||
329 | default: | ||
330 | SSB_WARN_ON(1); | ||
331 | } | ||
332 | if (!error) | ||
333 | goto out; | ||
334 | |||
335 | err_out: | ||
336 | dev_dbg(ssb_sdio_dev(bus), "%04X:%04X (width=%u, len=%u), error %d\n", | ||
337 | bus->sdio_sbaddr >> 16, offset, reg_width, saved_count, error); | ||
338 | out: | ||
339 | sdio_release_host(bus->host_sdio); | ||
340 | } | ||
341 | #endif /* CONFIG_SSB_BLOCKIO */ | ||
342 | |||
343 | static void ssb_sdio_write8(struct ssb_device *dev, u16 offset, u8 val) | ||
344 | { | ||
345 | struct ssb_bus *bus = dev->bus; | ||
346 | int error = 0; | ||
347 | |||
348 | sdio_claim_host(bus->host_sdio); | ||
349 | if (unlikely(ssb_sdio_switch_core(bus, dev))) | ||
350 | goto out; | ||
351 | offset |= bus->sdio_sbaddr & 0xffff; | ||
352 | offset &= SBSDIO_SB_OFT_ADDR_MASK; | ||
353 | sdio_writeb(bus->host_sdio, val, offset, &error); | ||
354 | if (error) { | ||
355 | dev_dbg(ssb_sdio_dev(bus), "%04X:%04X < %02x, error %d\n", | ||
356 | bus->sdio_sbaddr >> 16, offset, val, error); | ||
357 | } | ||
358 | out: | ||
359 | sdio_release_host(bus->host_sdio); | ||
360 | } | ||
361 | |||
362 | static void ssb_sdio_write16(struct ssb_device *dev, u16 offset, u16 val) | ||
363 | { | ||
364 | struct ssb_bus *bus = dev->bus; | ||
365 | int error = 0; | ||
366 | |||
367 | sdio_claim_host(bus->host_sdio); | ||
368 | if (unlikely(ssb_sdio_switch_core(bus, dev))) | ||
369 | goto out; | ||
370 | offset |= bus->sdio_sbaddr & 0xffff; | ||
371 | offset &= SBSDIO_SB_OFT_ADDR_MASK; | ||
372 | sdio_writew(bus->host_sdio, val, offset, &error); | ||
373 | if (error) { | ||
374 | dev_dbg(ssb_sdio_dev(bus), "%04X:%04X < %04x, error %d\n", | ||
375 | bus->sdio_sbaddr >> 16, offset, val, error); | ||
376 | } | ||
377 | out: | ||
378 | sdio_release_host(bus->host_sdio); | ||
379 | } | ||
380 | |||
381 | static void ssb_sdio_write32(struct ssb_device *dev, u16 offset, u32 val) | ||
382 | { | ||
383 | struct ssb_bus *bus = dev->bus; | ||
384 | int error = 0; | ||
385 | |||
386 | sdio_claim_host(bus->host_sdio); | ||
387 | if (unlikely(ssb_sdio_switch_core(bus, dev))) | ||
388 | goto out; | ||
389 | offset |= bus->sdio_sbaddr & 0xffff; | ||
390 | offset &= SBSDIO_SB_OFT_ADDR_MASK; | ||
391 | offset |= SBSDIO_SB_ACCESS_2_4B_FLAG; /* 32 bit data access */ | ||
392 | sdio_writel(bus->host_sdio, val, offset, &error); | ||
393 | if (error) { | ||
394 | dev_dbg(ssb_sdio_dev(bus), "%04X:%04X < %08x, error %d\n", | ||
395 | bus->sdio_sbaddr >> 16, offset, val, error); | ||
396 | } | ||
397 | if (bus->quirks & SSB_QUIRK_SDIO_READ_AFTER_WRITE32) | ||
398 | sdio_readl(bus->host_sdio, 0, &error); | ||
399 | out: | ||
400 | sdio_release_host(bus->host_sdio); | ||
401 | } | ||
402 | |||
403 | #ifdef CONFIG_SSB_BLOCKIO | ||
404 | static void ssb_sdio_block_write(struct ssb_device *dev, const void *buffer, | ||
405 | size_t count, u16 offset, u8 reg_width) | ||
406 | { | ||
407 | size_t saved_count = count; | ||
408 | struct ssb_bus *bus = dev->bus; | ||
409 | int error = 0; | ||
410 | |||
411 | sdio_claim_host(bus->host_sdio); | ||
412 | if (unlikely(ssb_sdio_switch_core(bus, dev))) { | ||
413 | error = -EIO; | ||
414 | memset((void *)buffer, 0xff, count); | ||
415 | goto err_out; | ||
416 | } | ||
417 | offset |= bus->sdio_sbaddr & 0xffff; | ||
418 | offset &= SBSDIO_SB_OFT_ADDR_MASK; | ||
419 | |||
420 | switch (reg_width) { | ||
421 | case sizeof(u8): | ||
422 | error = sdio_writesb(bus->host_sdio, offset, | ||
423 | (void *)buffer, count); | ||
424 | break; | ||
425 | case sizeof(u16): | ||
426 | SSB_WARN_ON(count & 1); | ||
427 | error = sdio_writesb(bus->host_sdio, offset, | ||
428 | (void *)buffer, count); | ||
429 | break; | ||
430 | case sizeof(u32): | ||
431 | SSB_WARN_ON(count & 3); | ||
432 | offset |= SBSDIO_SB_ACCESS_2_4B_FLAG; /* 32 bit data access */ | ||
433 | error = sdio_writesb(bus->host_sdio, offset, | ||
434 | (void *)buffer, count); | ||
435 | break; | ||
436 | default: | ||
437 | SSB_WARN_ON(1); | ||
438 | } | ||
439 | if (!error) | ||
440 | goto out; | ||
441 | |||
442 | err_out: | ||
443 | dev_dbg(ssb_sdio_dev(bus), "%04X:%04X (width=%u, len=%u), error %d\n", | ||
444 | bus->sdio_sbaddr >> 16, offset, reg_width, saved_count, error); | ||
445 | out: | ||
446 | sdio_release_host(bus->host_sdio); | ||
447 | } | ||
448 | |||
449 | #endif /* CONFIG_SSB_BLOCKIO */ | ||
450 | |||
451 | /* Not "static", as it's used in main.c */ | ||
452 | const struct ssb_bus_ops ssb_sdio_ops = { | ||
453 | .read8 = ssb_sdio_read8, | ||
454 | .read16 = ssb_sdio_read16, | ||
455 | .read32 = ssb_sdio_read32, | ||
456 | .write8 = ssb_sdio_write8, | ||
457 | .write16 = ssb_sdio_write16, | ||
458 | .write32 = ssb_sdio_write32, | ||
459 | #ifdef CONFIG_SSB_BLOCKIO | ||
460 | .block_read = ssb_sdio_block_read, | ||
461 | .block_write = ssb_sdio_block_write, | ||
462 | #endif | ||
463 | }; | ||
464 | |||
465 | #define GOTO_ERROR_ON(condition, description) do { \ | ||
466 | if (unlikely(condition)) { \ | ||
467 | error_description = description; \ | ||
468 | goto error; \ | ||
469 | } \ | ||
470 | } while (0) | ||
471 | |||
472 | int ssb_sdio_get_invariants(struct ssb_bus *bus, | ||
473 | struct ssb_init_invariants *iv) | ||
474 | { | ||
475 | struct ssb_sprom *sprom = &iv->sprom; | ||
476 | struct ssb_boardinfo *bi = &iv->boardinfo; | ||
477 | const char *error_description = "none"; | ||
478 | struct sdio_func_tuple *tuple; | ||
479 | void *mac; | ||
480 | |||
481 | memset(sprom, 0xFF, sizeof(*sprom)); | ||
482 | sprom->boardflags_lo = 0; | ||
483 | sprom->boardflags_hi = 0; | ||
484 | |||
485 | tuple = bus->host_sdio->tuples; | ||
486 | while (tuple) { | ||
487 | switch (tuple->code) { | ||
488 | case 0x22: /* extended function */ | ||
489 | switch (tuple->data[0]) { | ||
490 | case CISTPL_FUNCE_LAN_NODE_ID: | ||
491 | GOTO_ERROR_ON((tuple->size != 7) && | ||
492 | (tuple->data[1] != 6), | ||
493 | "mac tpl size"); | ||
494 | /* fetch the MAC address. */ | ||
495 | mac = tuple->data + 2; | ||
496 | memcpy(sprom->il0mac, mac, ETH_ALEN); | ||
497 | memcpy(sprom->et1mac, mac, ETH_ALEN); | ||
498 | break; | ||
499 | default: | ||
500 | break; | ||
501 | } | ||
502 | break; | ||
503 | case 0x80: /* vendor specific tuple */ | ||
504 | switch (tuple->data[0]) { | ||
505 | case SSB_SDIO_CIS_SROMREV: | ||
506 | GOTO_ERROR_ON(tuple->size != 2, | ||
507 | "sromrev tpl size"); | ||
508 | sprom->revision = tuple->data[1]; | ||
509 | break; | ||
510 | case SSB_SDIO_CIS_ID: | ||
511 | GOTO_ERROR_ON((tuple->size != 5) && | ||
512 | (tuple->size != 7), | ||
513 | "id tpl size"); | ||
514 | bi->vendor = tuple->data[1] | | ||
515 | (tuple->data[2]<<8); | ||
516 | break; | ||
517 | case SSB_SDIO_CIS_BOARDREV: | ||
518 | GOTO_ERROR_ON(tuple->size != 2, | ||
519 | "boardrev tpl size"); | ||
520 | sprom->board_rev = tuple->data[1]; | ||
521 | break; | ||
522 | case SSB_SDIO_CIS_PA: | ||
523 | GOTO_ERROR_ON((tuple->size != 9) && | ||
524 | (tuple->size != 10), | ||
525 | "pa tpl size"); | ||
526 | sprom->pa0b0 = tuple->data[1] | | ||
527 | ((u16)tuple->data[2] << 8); | ||
528 | sprom->pa0b1 = tuple->data[3] | | ||
529 | ((u16)tuple->data[4] << 8); | ||
530 | sprom->pa0b2 = tuple->data[5] | | ||
531 | ((u16)tuple->data[6] << 8); | ||
532 | sprom->itssi_a = tuple->data[7]; | ||
533 | sprom->itssi_bg = tuple->data[7]; | ||
534 | sprom->maxpwr_a = tuple->data[8]; | ||
535 | sprom->maxpwr_bg = tuple->data[8]; | ||
536 | break; | ||
537 | case SSB_SDIO_CIS_OEMNAME: | ||
538 | /* Not present */ | ||
539 | break; | ||
540 | case SSB_SDIO_CIS_CCODE: | ||
541 | GOTO_ERROR_ON(tuple->size != 2, | ||
542 | "ccode tpl size"); | ||
543 | sprom->country_code = tuple->data[1]; | ||
544 | break; | ||
545 | case SSB_SDIO_CIS_ANTENNA: | ||
546 | GOTO_ERROR_ON(tuple->size != 2, | ||
547 | "ant tpl size"); | ||
548 | sprom->ant_available_a = tuple->data[1]; | ||
549 | sprom->ant_available_bg = tuple->data[1]; | ||
550 | break; | ||
551 | case SSB_SDIO_CIS_ANTGAIN: | ||
552 | GOTO_ERROR_ON(tuple->size != 2, | ||
553 | "antg tpl size"); | ||
554 | sprom->antenna_gain.ghz24.a0 = tuple->data[1]; | ||
555 | sprom->antenna_gain.ghz24.a1 = tuple->data[1]; | ||
556 | sprom->antenna_gain.ghz24.a2 = tuple->data[1]; | ||
557 | sprom->antenna_gain.ghz24.a3 = tuple->data[1]; | ||
558 | sprom->antenna_gain.ghz5.a0 = tuple->data[1]; | ||
559 | sprom->antenna_gain.ghz5.a1 = tuple->data[1]; | ||
560 | sprom->antenna_gain.ghz5.a2 = tuple->data[1]; | ||
561 | sprom->antenna_gain.ghz5.a3 = tuple->data[1]; | ||
562 | break; | ||
563 | case SSB_SDIO_CIS_BFLAGS: | ||
564 | GOTO_ERROR_ON((tuple->size != 3) && | ||
565 | (tuple->size != 5), | ||
566 | "bfl tpl size"); | ||
567 | sprom->boardflags_lo = tuple->data[1] | | ||
568 | ((u16)tuple->data[2] << 8); | ||
569 | break; | ||
570 | case SSB_SDIO_CIS_LEDS: | ||
571 | GOTO_ERROR_ON(tuple->size != 5, | ||
572 | "leds tpl size"); | ||
573 | sprom->gpio0 = tuple->data[1]; | ||
574 | sprom->gpio1 = tuple->data[2]; | ||
575 | sprom->gpio2 = tuple->data[3]; | ||
576 | sprom->gpio3 = tuple->data[4]; | ||
577 | break; | ||
578 | default: | ||
579 | break; | ||
580 | } | ||
581 | break; | ||
582 | default: | ||
583 | break; | ||
584 | } | ||
585 | tuple = tuple->next; | ||
586 | } | ||
587 | |||
588 | return 0; | ||
589 | error: | ||
590 | dev_err(ssb_sdio_dev(bus), "failed to fetch device invariants: %s\n", | ||
591 | error_description); | ||
592 | return -ENODEV; | ||
593 | } | ||
594 | |||
595 | void ssb_sdio_exit(struct ssb_bus *bus) | ||
596 | { | ||
597 | if (bus->bustype != SSB_BUSTYPE_SDIO) | ||
598 | return; | ||
599 | /* Nothing to do here. */ | ||
600 | } | ||
601 | |||
602 | int ssb_sdio_init(struct ssb_bus *bus) | ||
603 | { | ||
604 | if (bus->bustype != SSB_BUSTYPE_SDIO) | ||
605 | return 0; | ||
606 | |||
607 | bus->sdio_sbaddr = ~0; | ||
608 | |||
609 | return 0; | ||
610 | } | ||
diff --git a/drivers/ssb/ssb_private.h b/drivers/ssb/ssb_private.h index 57fa482abb9..25433565dfd 100644 --- a/drivers/ssb/ssb_private.h +++ b/drivers/ssb/ssb_private.h | |||
@@ -114,6 +114,46 @@ static inline int ssb_pcmcia_init(struct ssb_bus *bus) | |||
114 | } | 114 | } |
115 | #endif /* CONFIG_SSB_PCMCIAHOST */ | 115 | #endif /* CONFIG_SSB_PCMCIAHOST */ |
116 | 116 | ||
117 | /* sdio.c */ | ||
118 | #ifdef CONFIG_SSB_SDIOHOST | ||
119 | extern int ssb_sdio_get_invariants(struct ssb_bus *bus, | ||
120 | struct ssb_init_invariants *iv); | ||
121 | |||
122 | extern u32 ssb_sdio_scan_read32(struct ssb_bus *bus, u16 offset); | ||
123 | extern int ssb_sdio_switch_core(struct ssb_bus *bus, struct ssb_device *dev); | ||
124 | extern int ssb_sdio_scan_switch_coreidx(struct ssb_bus *bus, u8 coreidx); | ||
125 | extern int ssb_sdio_hardware_setup(struct ssb_bus *bus); | ||
126 | extern void ssb_sdio_exit(struct ssb_bus *bus); | ||
127 | extern int ssb_sdio_init(struct ssb_bus *bus); | ||
128 | |||
129 | extern const struct ssb_bus_ops ssb_sdio_ops; | ||
130 | #else /* CONFIG_SSB_SDIOHOST */ | ||
131 | static inline u32 ssb_sdio_scan_read32(struct ssb_bus *bus, u16 offset) | ||
132 | { | ||
133 | return 0; | ||
134 | } | ||
135 | static inline int ssb_sdio_switch_core(struct ssb_bus *bus, | ||
136 | struct ssb_device *dev) | ||
137 | { | ||
138 | return 0; | ||
139 | } | ||
140 | static inline int ssb_sdio_scan_switch_coreidx(struct ssb_bus *bus, u8 coreidx) | ||
141 | { | ||
142 | return 0; | ||
143 | } | ||
144 | static inline int ssb_sdio_hardware_setup(struct ssb_bus *bus) | ||
145 | { | ||
146 | return 0; | ||
147 | } | ||
148 | static inline void ssb_sdio_exit(struct ssb_bus *bus) | ||
149 | { | ||
150 | } | ||
151 | static inline int ssb_sdio_init(struct ssb_bus *bus) | ||
152 | { | ||
153 | return 0; | ||
154 | } | ||
155 | #endif /* CONFIG_SSB_SDIOHOST */ | ||
156 | |||
117 | 157 | ||
118 | /* scan.c */ | 158 | /* scan.c */ |
119 | extern const char *ssb_core_name(u16 coreid); | 159 | extern const char *ssb_core_name(u16 coreid); |