diff options
Diffstat (limited to 'target/linux/generic-2.6/files/drivers/ssb/pcmcia.c')
| -rw-r--r-- | target/linux/generic-2.6/files/drivers/ssb/pcmcia.c | 104 |
1 files changed, 60 insertions, 44 deletions
diff --git a/target/linux/generic-2.6/files/drivers/ssb/pcmcia.c b/target/linux/generic-2.6/files/drivers/ssb/pcmcia.c index 7c773603b4..46816cda8b 100644 --- a/target/linux/generic-2.6/files/drivers/ssb/pcmcia.c +++ b/target/linux/generic-2.6/files/drivers/ssb/pcmcia.c @@ -10,6 +10,7 @@ #include <linux/ssb/ssb.h> #include <linux/delay.h> +#include <linux/io.h> #include <pcmcia/cs_types.h> #include <pcmcia/cs.h> @@ -62,17 +63,17 @@ int ssb_pcmcia_switch_coreidx(struct ssb_bus *bus, err = pcmcia_access_configuration_register(pdev, ®); if (err != CS_SUCCESS) goto error; - read_addr |= (reg.Value & 0xF) << 12; + read_addr |= ((u32)(reg.Value & 0x0F)) << 12; reg.Offset = 0x30; err = pcmcia_access_configuration_register(pdev, ®); if (err != CS_SUCCESS) goto error; - read_addr |= reg.Value << 16; + read_addr |= ((u32)reg.Value) << 16; reg.Offset = 0x32; err = pcmcia_access_configuration_register(pdev, ®); if (err != CS_SUCCESS) goto error; - read_addr |= reg.Value << 24; + read_addr |= ((u32)reg.Value) << 24; cur_core = (read_addr - SSB_ENUM_BASE) / SSB_CORE_SIZE; if (cur_core == coreidx) @@ -93,7 +94,6 @@ int ssb_pcmcia_switch_core(struct ssb_bus *bus, struct ssb_device *dev) { int err; - unsigned long flags; #if SSB_VERBOSE_PCMCIACORESWITCH_DEBUG ssb_printk(KERN_INFO PFX @@ -102,11 +102,9 @@ int ssb_pcmcia_switch_core(struct ssb_bus *bus, dev->core_index); #endif - spin_lock_irqsave(&bus->bar_lock, flags); err = ssb_pcmcia_switch_coreidx(bus, dev->core_index); if (!err) bus->mapped_device = dev; - spin_unlock_irqrestore(&bus->bar_lock, flags); return err; } @@ -114,14 +112,12 @@ int ssb_pcmcia_switch_core(struct ssb_bus *bus, int ssb_pcmcia_switch_segment(struct ssb_bus *bus, u8 seg) { int attempts = 0; - unsigned long flags; conf_reg_t reg; - int res, err = 0; + int res; SSB_WARN_ON((seg != 0) && (seg != 1)); reg.Offset = 0x34; reg.Function = 0; - spin_lock_irqsave(&bus->bar_lock, flags); while (1) { reg.Action = CS_WRITE; reg.Value = seg; @@ -142,37 +138,36 @@ int ssb_pcmcia_switch_segment(struct ssb_bus *bus, u8 seg) udelay(10); } bus->mapped_pcmcia_seg = seg; -out_unlock: - spin_unlock_irqrestore(&bus->bar_lock, flags); - return err; + + return 0; error: ssb_printk(KERN_ERR PFX "Failed to switch pcmcia segment\n"); - err = -ENODEV; - goto out_unlock; + return -ENODEV; } -/* These are the main device register access functions. - * do_select_core is inline to have the likely hotpath inline. - * All unlikely codepaths are out-of-line. */ -static inline int do_select_core(struct ssb_bus *bus, - struct ssb_device *dev, - u16 *offset) +static int select_core_and_segment(struct ssb_device *dev, + u16 *offset) { + struct ssb_bus *bus = dev->bus; int err; - u8 need_seg = (*offset >= 0x800) ? 1 : 0; + u8 need_segment; + + if (*offset >= 0x800) { + *offset -= 0x800; + need_segment = 1; + } else + need_segment = 0; if (unlikely(dev != bus->mapped_device)) { err = ssb_pcmcia_switch_core(bus, dev); if (unlikely(err)) return err; } - if (unlikely(need_seg != bus->mapped_pcmcia_seg)) { - err = ssb_pcmcia_switch_segment(bus, need_seg); + if (unlikely(need_segment != bus->mapped_pcmcia_seg)) { + err = ssb_pcmcia_switch_segment(bus, need_segment); if (unlikely(err)) return err; } - if (need_seg == 1) - *offset -= 0x800; return 0; } @@ -180,46 +175,65 @@ static inline int do_select_core(struct ssb_bus *bus, static u16 ssb_pcmcia_read16(struct ssb_device *dev, u16 offset) { struct ssb_bus *bus = dev->bus; - u16 x; + unsigned long flags; + int err; + u16 value = 0xFFFF; - if (unlikely(do_select_core(bus, dev, &offset))) - return 0xFFFF; - x = readw(bus->mmio + offset); + spin_lock_irqsave(&bus->bar_lock, flags); + err = select_core_and_segment(dev, &offset); + if (likely(!err)) + value = readw(bus->mmio + offset); + spin_unlock_irqrestore(&bus->bar_lock, flags); - return x; + return value; } static u32 ssb_pcmcia_read32(struct ssb_device *dev, u16 offset) { struct ssb_bus *bus = dev->bus; - u32 x; + unsigned long flags; + int err; + u32 lo = 0xFFFFFFFF, hi = 0xFFFFFFFF; - if (unlikely(do_select_core(bus, dev, &offset))) - return 0xFFFFFFFF; - x = readl(bus->mmio + offset); + spin_lock_irqsave(&bus->bar_lock, flags); + err = select_core_and_segment(dev, &offset); + if (likely(!err)) { + lo = readw(bus->mmio + offset); + hi = readw(bus->mmio + offset + 2); + } + spin_unlock_irqrestore(&bus->bar_lock, flags); - return x; + return (lo | (hi << 16)); } static void ssb_pcmcia_write16(struct ssb_device *dev, u16 offset, u16 value) { struct ssb_bus *bus = dev->bus; + unsigned long flags; + int err; - if (unlikely(do_select_core(bus, dev, &offset))) - return; - writew(value, bus->mmio + offset); + spin_lock_irqsave(&bus->bar_lock, flags); + err = select_core_and_segment(dev, &offset); + if (likely(!err)) + writew(value, bus->mmio + offset); + mmiowb(); + spin_unlock_irqrestore(&bus->bar_lock, flags); } static void ssb_pcmcia_write32(struct ssb_device *dev, u16 offset, u32 value) { struct ssb_bus *bus = dev->bus; + unsigned long flags; + int err; - if (unlikely(do_select_core(bus, dev, &offset))) - return; - readw(bus->mmio + offset); - writew(value >> 16, bus->mmio + offset + 2); - readw(bus->mmio + offset); - writew(value, bus->mmio + offset); + spin_lock_irqsave(&bus->bar_lock, flags); + err = select_core_and_segment(dev, &offset); + if (likely(!err)) { + writew((value & 0x0000FFFF), bus->mmio + offset); + writew(((value & 0xFFFF0000) >> 16), bus->mmio + offset + 2); + } + mmiowb(); + spin_unlock_irqrestore(&bus->bar_lock, flags); } /* Not "static", as it's used in main.c */ @@ -230,10 +244,12 @@ const struct ssb_bus_ops ssb_pcmcia_ops = { .write32 = ssb_pcmcia_write32, }; +#include <linux/etherdevice.h> int ssb_pcmcia_get_invariants(struct ssb_bus *bus, struct ssb_init_invariants *iv) { //TODO + random_ether_addr(iv->sprom.il0mac); return 0; } |