diff options
Diffstat (limited to 'target/linux/brcm47xx-2.6/files/drivers/ssb/driver_mipscore.c')
-rw-r--r-- | target/linux/brcm47xx-2.6/files/drivers/ssb/driver_mipscore.c | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/target/linux/brcm47xx-2.6/files/drivers/ssb/driver_mipscore.c b/target/linux/brcm47xx-2.6/files/drivers/ssb/driver_mipscore.c deleted file mode 100644 index 67d10178b6..0000000000 --- a/target/linux/brcm47xx-2.6/files/drivers/ssb/driver_mipscore.c +++ /dev/null @@ -1,258 +0,0 @@ -/* - * Sonics Silicon Backplane - * Broadcom MIPS core driver - * - * Copyright 2005, Broadcom Corporation - * Copyright 2006, 2007, Michael Buesch <mb@bu3sch.de> - * - * Licensed under the GNU/GPL. See COPYING for details. - */ - -#include <linux/ssb/ssb.h> - -#include <linux/serial.h> -#include <linux/serial_core.h> -#include <linux/serial_reg.h> -#include <asm/time.h> - -#include "ssb_private.h" - - -static inline u32 mips_read32(struct ssb_mipscore *mcore, - u16 offset) -{ - return ssb_read32(mcore->dev, offset); -} - -static inline void mips_write32(struct ssb_mipscore *mcore, - u16 offset, - u32 value) -{ - ssb_write32(mcore->dev, offset, value); -} - -static const u32 ipsflag_irq_mask[] = { - 0, - SSB_IPSFLAG_IRQ1, - SSB_IPSFLAG_IRQ2, - SSB_IPSFLAG_IRQ3, - SSB_IPSFLAG_IRQ4, -}; - -static const u32 ipsflag_irq_shift[] = { - 0, - SSB_IPSFLAG_IRQ1_SHIFT, - SSB_IPSFLAG_IRQ2_SHIFT, - SSB_IPSFLAG_IRQ3_SHIFT, - SSB_IPSFLAG_IRQ4_SHIFT, -}; - -static inline u32 ssb_irqflag(struct ssb_device *dev) -{ - return ssb_read32(dev, SSB_TPSFLAG) & SSB_TPSFLAG_BPFLAG; -} - -/* Get the MIPS IRQ assignment for a specified device. - * If unassigned, 0 is returned. - */ -unsigned int ssb_mips_irq(struct ssb_device *dev) -{ - struct ssb_bus *bus = dev->bus; - u32 irqflag; - u32 ipsflag; - u32 tmp; - unsigned int irq; - - irqflag = ssb_irqflag(dev); - ipsflag = ssb_read32(bus->mipscore.dev, SSB_IPSFLAG); - for (irq = 1; irq <= 4; irq++) { - tmp = ((ipsflag & ipsflag_irq_mask[irq]) >> ipsflag_irq_shift[irq]); - if (tmp == irqflag) - break; - } - if (irq == 5) - irq = 0; - - return irq; -} - -static void clear_irq(struct ssb_bus *bus, unsigned int irq) -{ - struct ssb_device *dev = bus->mipscore.dev; - - /* Clear the IRQ in the MIPScore backplane registers */ - if (irq == 0) { - ssb_write32(dev, SSB_INTVEC, 0); - } else { - ssb_write32(dev, SSB_IPSFLAG, - ssb_read32(dev, SSB_IPSFLAG) | - ipsflag_irq_mask[irq]); - } -} - -static void set_irq(struct ssb_device *dev, unsigned int irq) -{ - unsigned int oldirq = ssb_mips_irq(dev); - struct ssb_bus *bus = dev->bus; - struct ssb_device *mdev = bus->mipscore.dev; - u32 irqflag = ssb_irqflag(dev); - - dev->irq = irq + 2; - - ssb_dprintk(KERN_INFO PFX - "set_irq: core 0x%04x, irq %d => %d\n", - dev->id.coreid, oldirq, irq); - /* clear the old irq */ - if (oldirq == 0) - ssb_write32(mdev, SSB_INTVEC, (~(1 << irqflag) & ssb_read32(mdev, SSB_INTVEC))); - else - clear_irq(bus, oldirq); - - /* assign the new one */ - if (irq == 0) - ssb_write32(mdev, SSB_INTVEC, ((1 << irqflag) & ssb_read32(mdev, SSB_INTVEC))); - - irqflag <<= ipsflag_irq_shift[irq]; - irqflag |= (ssb_read32(mdev, SSB_IPSFLAG) & ~ipsflag_irq_mask[irq]); - ssb_write32(mdev, SSB_IPSFLAG, irqflag); -} - -/* XXX: leave here or move into separate extif driver? */ -static int ssb_extif_serial_init(struct ssb_device *dev, struct ssb_serial_ports *ports) -{ - -} - - -static void ssb_mips_serial_init(struct ssb_mipscore *mcore) -{ - struct ssb_bus *bus = mcore->dev->bus; - - //TODO if (EXTIF available -#if 0 - extifregs_t *eir = (extifregs_t *) regs; - sbconfig_t *sb; - - /* Determine external UART register base */ - sb = (sbconfig_t *)((ulong) eir + SBCONFIGOFF); - base = EXTIF_CFGIF_BASE(sb_base(R_REG(&sb->sbadmatch1))); - - /* Determine IRQ */ - irq = sb_irq(sbh); - - /* Disable GPIO interrupt initially */ - W_REG(&eir->gpiointpolarity, 0); - W_REG(&eir->gpiointmask, 0); - - /* Search for external UARTs */ - n = 2; - for (i = 0; i < 2; i++) { - regs = (void *) REG_MAP(base + (i * 8), 8); - if (BCMINIT(serial_exists)(regs)) { - /* Set GPIO 1 to be the external UART IRQ */ - W_REG(&eir->gpiointmask, 2); - if (add) - add(regs, irq, 13500000, 0); - } - } - - /* Add internal UART if enabled */ - if (R_REG(&eir->corecontrol) & CC_UE) - if (add) - add((void *) &eir->uartdata, irq, sb_clock(sbh), 2); - -#endif - if (bus->extif.dev) - mcore->nr_serial_ports = ssb_extif_serial_init(&bus->extif, mcore->serial_ports); - else if (bus->chipco.dev) - mcore->nr_serial_ports = ssb_chipco_serial_init(&bus->chipco, mcore->serial_ports); - else - mcore->nr_serial_ports = 0; -} - -static void ssb_mips_flash_detect(struct ssb_mipscore *mcore) -{ - struct ssb_bus *bus = mcore->dev->bus; - - if (bus->chipco.dev) { - mcore->flash_window = 0x1c000000; - mcore->flash_window_size = 0x800000; - } else { - mcore->flash_window = 0x1fc00000; - mcore->flash_window_size = 0x400000; - } -} - - -static void ssb_cpu_clock(struct ssb_mipscore *mcore) -{ -} - -void ssb_mipscore_init(struct ssb_mipscore *mcore) -{ - struct ssb_bus *bus = mcore->dev->bus; - struct ssb_device *dev; - unsigned long hz, ns; - unsigned int irq, i; - - if (!mcore->dev) - return; /* We don't have a MIPS core */ - - ssb_dprintk(KERN_INFO PFX "Initializing MIPS core...\n"); - - hz = ssb_clockspeed(bus); - if (!hz) - hz = 100000000; - ns = 1000000000 / hz; - -//TODO -#if 0 - if (have EXTIF) { - /* Initialize extif so we can get to the LEDs and external UART */ - W_REG(&eir->prog_config, CF_EN); - - /* Set timing for the flash */ - tmp = CEIL(10, ns) << FW_W3_SHIFT; /* W3 = 10nS */ - tmp = tmp | (CEIL(40, ns) << FW_W1_SHIFT); /* W1 = 40nS */ - tmp = tmp | CEIL(120, ns); /* W0 = 120nS */ - W_REG(&eir->prog_waitcount, tmp); /* 0x01020a0c for a 100Mhz clock */ - - /* Set programmable interface timing for external uart */ - tmp = CEIL(10, ns) << FW_W3_SHIFT; /* W3 = 10nS */ - tmp = tmp | (CEIL(20, ns) << FW_W2_SHIFT); /* W2 = 20nS */ - tmp = tmp | (CEIL(100, ns) << FW_W1_SHIFT); /* W1 = 100nS */ - tmp = tmp | CEIL(120, ns); /* W0 = 120nS */ - W_REG(&eir->prog_waitcount, tmp); - } - else... chipcommon -#endif - if (bus->chipco.dev) - ssb_chipco_timing_init(&bus->chipco, ns); - - /* Assign IRQs to all cores on the bus, start with irq line 2, because serial usually takes 1 */ - for (irq = 2, i = 0; i < bus->nr_devices; i++) { - dev = &(bus->devices[i]); - dev->irq = ssb_mips_irq(dev) + 2; - switch(dev->id.coreid) { - case SSB_DEV_USB11_HOST: - /* shouldn't need a separate irq line for non-4710, most of them have a proper - * external usb controller on the pci */ - if ((bus->chip_id == 0x4710) && (irq <= 4)) { - set_irq(dev, irq++); - break; - } - case SSB_DEV_PCI: - case SSB_DEV_ETHERNET: - case SSB_DEV_80211: - case SSB_DEV_USB20_HOST: - /* These devices get their own IRQ line if available, the rest goes on IRQ0 */ - if (irq <= 4) { - set_irq(dev, irq++); - break; - } - } - } - - ssb_mips_serial_init(mcore); - ssb_mips_flash_detect(mcore); -} |