diff options
Diffstat (limited to 'arch/ppc/kernel/feature.c')
| -rw-r--r-- | arch/ppc/kernel/feature.c | 175 |
1 files changed, 146 insertions, 29 deletions
diff --git a/arch/ppc/kernel/feature.c b/arch/ppc/kernel/feature.c index 4b63d5dc0..57599917a 100644 --- a/arch/ppc/kernel/feature.c +++ b/arch/ppc/kernel/feature.c @@ -24,6 +24,8 @@ #include <asm/errno.h> #include <asm/ohare.h> #include <asm/heathrow.h> +#include <asm/keylargo.h> +#include <asm/uninorth.h> #include <asm/io.h> #include <asm/prom.h> #include <asm/feature.h> @@ -34,6 +36,20 @@ #define MAX_FEATURE_OFFSET 0x100 #define FREG(c,r) (&(((c)->reg)[(r)>>2])) +/* Keylargo reg. access. */ +#define KL_FCR(r) (keylargo_base + ((r) >> 2)) +#define KL_IN(r) (in_le32(KL_FCR(r))) +#define KL_OUT(r,v) (out_le32(KL_FCR(r), (v))) +#define KL_BIS(r,v) (KL_OUT((r), KL_IN(r) | (v))) +#define KL_BIC(r,v) (KL_OUT((r), KL_IN(r) & ~(v))) + +/* Uni-N reg. access. Note that Uni-N regs are big endian */ +#define UN_REG(r) (uninorth_base + ((r) >> 2)) +#define UN_IN(r) (in_be32(UN_REG(r))) +#define UN_OUT(r,v) (out_be32(UN_REG(r), (v))) +#define UN_BIS(r,v) (UN_OUT((r), UN_IN(r) | (v))) +#define UN_BIC(r,v) (UN_OUT((r), UN_IN(r) & ~(v))) + typedef struct feature_bit { int reg; /* reg. offset from mac-io base */ unsigned int polarity; /* 0 = normal, 1 = inverse */ @@ -74,11 +90,45 @@ static fbit feature_bits_ohare_pbook[] = { {0x38,0,0}, /* FEATURE_Airport_reset */ }; -/* Those bits are from a PowerBook. It's possible that desktop machines - * based on heathrow need a different definition or some bits removed +/* Those bits concern heathrow-based desktop machines (Beige G3s). We have removed + * the SCC related bits and init them once. They have proven to occasionally cause + * problems with the desktop units. */ static fbit feature_bits_heathrow[] = { {0x38,0,0}, /* FEATURE_null */ + {0x38,0,0}, /* FEATURE_Serial_reset */ + {0x38,0,0}, /* FEATURE_Serial_enable */ + {0x38,0,0}, /* FEATURE_Serial_IO_A */ + {0x38,0,0}, /* FEATURE_Serial_IO_B */ + {0x38,0,HRW_SWIM_ENABLE}, /* FEATURE_SWIM3_enable */ + {0x38,0,HRW_MESH_ENABLE}, /* FEATURE_MESH_enable */ + {0x38,0,HRW_IDE0_ENABLE}, /* FEATURE_IDE0_enable */ + {0x38,1,HRW_IDE0_RESET_N}, /* FEATURE_IDE0_reset */ + {0x38,0,HRW_IOBUS_ENABLE}, /* FEATURE_IOBUS_enable */ + {0x38,1,0}, /* FEATURE_Mediabay_reset */ + {0x38,1,0}, /* FEATURE_Mediabay_power */ + {0x38,0,0}, /* FEATURE_Mediabay_PCI_enable */ + {0x38,0,HRW_BAY_IDE_ENABLE}, /* FEATURE_IDE1_enable */ + {0x38,1,HRW_IDE1_RESET_N}, /* FEATURE_IDE1_reset */ + {0x38,0,0}, /* FEATURE_Mediabay_floppy_enable */ + {0x38,0,HRW_BMAC_RESET}, /* FEATURE_BMac_reset */ + {0x38,0,HRW_BMAC_IO_ENABLE}, /* FEATURE_BMac_IO_enable */ + {0x38,1,0}, /* FEATURE_Modem_power */ + {0x38,0,HRW_SLOW_SCC_PCLK}, /* FEATURE_Slow_SCC_PCLK */ + {0x38,1,0}, /* FEATURE_Sound_Power */ + {0x38,0,0}, /* FEATURE_Sound_CLK_Enable */ + {0x38,0,0}, /* FEATURE_IDE2_enable */ + {0x38,0,0}, /* FEATURE_IDE2_reset */ + {0x38,0,0}, /* FEATURE_Mediabay_IDE_switch */ + {0x38,0,0}, /* FEATURE_Mediabay_content */ + {0x38,0,0}, /* FEATURE_Airport_reset */ +}; + +/* Those bits concern heathrow-based PowerBooks (wallstreet/mainstreet). + * Heathrow-based desktop macs (Beige G3s) are _not_ handled here + */ +static fbit feature_bits_wallstreet[] = { + {0x38,0,0}, /* FEATURE_null */ {0x38,0,HRW_RESET_SCC}, /* FEATURE_Serial_reset */ {0x38,0,HRW_SCC_ENABLE}, /* FEATURE_Serial_enable */ {0x38,0,HRW_SCCA_IO}, /* FEATURE_Serial_IO_A */ @@ -145,32 +195,32 @@ static fbit feature_bits_paddington[] = { */ static fbit feature_bits_keylargo[] = { {0x38,0,0}, /* FEATURE_null */ - {0x38,0,0}, /* FEATURE_Serial_reset */ - {0x38,0,0x00000054}, /* FEATURE_Serial_enable */ - {0x38,0,0}, /* FEATURE_Serial_IO_A */ - {0x38,0,0}, /* FEATURE_Serial_IO_B */ + {0x38,0,KL0_SCC_RESET}, /* FEATURE_Serial_reset */ + {0x38,0,KL0_SERIAL_ENABLE}, /* FEATURE_Serial_enable */ + {0x38,0,KL0_SCC_A_INTF_ENABLE}, /* FEATURE_Serial_IO_A */ + {0x38,0,KL0_SCC_B_INTF_ENABLE}, /* FEATURE_Serial_IO_B */ {0x38,0,0}, /* FEATURE_SWIM3_enable */ {0x38,0,0}, /* FEATURE_MESH_enable */ {0x3c,0,0}, /* FEATURE_IDE0_enable */ - {0x3c,1,0x01000000}, /* FEATURE_IDE0_reset */ + {0x3c,1,KL1_EIDE0_RESET_N}, /* FEATURE_IDE0_reset */ {0x38,0,0}, /* FEATURE_IOBUS_enable */ {0x34,1,0x00000200}, /* FEATURE_Mediabay_reset */ {0x34,1,0x00000400}, /* FEATURE_Mediabay_power */ {0x38,0,0}, /* FEATURE_Mediabay_PCI_enable */ {0x3c,0,0x0}, /* FEATURE_IDE1_enable */ - {0x3c,1,0x08000000}, /* FEATURE_IDE1_reset */ + {0x3c,1,KL1_EIDE1_RESET_N}, /* FEATURE_IDE1_reset */ {0x38,0,0}, /* FEATURE_Mediabay_floppy_enable */ {0x38,0,0}, /* FEATURE_BMac_reset */ {0x38,0,0}, /* FEATURE_BMac_IO_enable */ - {0x40,1,0x02000000}, /* FEATURE_Modem_power */ + {0x40,1,KL2_MODEM_POWER_N}, /* FEATURE_Modem_power */ {0x38,0,0}, /* FEATURE_Slow_SCC_PCLK */ {0x38,0,0}, /* FEATURE_Sound_Power */ {0x38,0,0}, /* FEATURE_Sound_CLK_Enable */ {0x38,0,0}, /* FEATURE_IDE2_enable */ - {0x3c,1,0x40000000}, /* FEATURE_IDE2_reset */ - {0x34,0,0x00001000}, /* FEATURE_Mediabay_IDE_switch */ + {0x3c,1,KL1_UIDE_RESET_N}, /* FEATURE_IDE2_reset */ + {0x34,0,KL_MBCR_MBDEV_ENABLE}, /* FEATURE_Mediabay_IDE_switch */ {0x34,0,0x00000100}, /* FEATURE_Mediabay_content */ - {0x40,1,0x08000000}, /* FEATURE_Airport_reset */ + {0x40,1,KL2_AIRPORT_RESET_N}, /* FEATURE_Airport_reset */ }; /* definition of a feature controller object */ @@ -190,6 +240,8 @@ feature_lookup_controller(struct device_node *device); static void heathrow_prepare_for_sleep(struct feature_controller* ctrler); static void heathrow_wakeup(struct feature_controller* ctrler); +static void keylargo_init(void); +static void uninorth_init(void); static void core99_prepare_for_sleep(struct feature_controller* ctrler); static void core99_wake_up(struct feature_controller* ctrler); @@ -228,8 +280,15 @@ feature_init(void) } } else if (device_is_compatible(np, "paddington")) { feature_add_controller(np, feature_bits_paddington); + } else if (machine_is_compatible("AAPL,PowerBook1998")) { + feature_add_controller(np, feature_bits_wallstreet); } else { - feature_add_controller(np, feature_bits_heathrow); + struct feature_controller* ctrler = + feature_add_controller(np, feature_bits_heathrow); + if (ctrler) + out_le32(FREG(ctrler,HEATHROW_FEATURE_REG), + in_le32(FREG(ctrler,HEATHROW_FEATURE_REG)) | HRW_DEFAULTS); + } np = np->next; } @@ -249,14 +308,17 @@ feature_init(void) np = find_devices("uni-n"); if (np && np->n_addrs > 0) { uninorth_base = ioremap(np->addrs[0].address, 0x1000); - rev = (u32 *)get_property(np, "device-rev", NULL); - if (rev) - uninorth_rev = *rev; + uninorth_rev = in_be32(UN_REG(UNI_N_VERSION)); } if (uninorth_base && keylargo_base) printk("Uni-N revision: %d, KeyLargo revision: %d\n", uninorth_rev, keylargo_rev); + if (uninorth_base) + uninorth_init(); + if (keylargo_base) + keylargo_init(); + if (controller_count) printk(KERN_INFO "Registered %d feature controller(s)\n", controller_count); @@ -440,14 +502,21 @@ feature_set_gmac_power(struct device_node* device, int power) if (!uninorth_base) return; if (power) - out_le32(uninorth_base + 0x20/4, - in_le32(uninorth_base + 0x20/4) | 0x02000000); + UN_BIS(UNI_N_CLOCK_CNTL, UNI_N_CLOCK_CNTL_GMAC); else - out_le32(uninorth_base + 0x20/4, - in_le32(uninorth_base + 0x20/4) & ~0x02000000); + UN_BIC(UNI_N_CLOCK_CNTL, UNI_N_CLOCK_CNTL_GMAC); udelay(20); } +void +feature_set_gmac_phy_reset(struct device_node* device, int reset) +{ + if (!keylargo_base) + return; + out_8((volatile u8 *)KL_FCR(KL_GPIO_ETH_PHY_RESET), reset); + (void)in_8((volatile u8 *)KL_FCR(KL_GPIO_ETH_PHY_RESET)); +} + /* Pass the node of the correct controller, please */ void feature_set_usb_power(struct device_node* device, int power) @@ -460,6 +529,53 @@ feature_set_firewire_power(struct device_node* device, int power) { } +/* Initialize the Core99 UniNorth host bridge and memory controller + */ +static void +uninorth_init(void) +{ + struct device_node* gmac; + unsigned long actrl; + + /* Set the arbitrer QAck delay according to what Apple does + */ + actrl = in_be32(UN_REG(UNI_N_ARB_CTRL)) & ~UNI_N_ARB_CTRL_QACK_DELAY_MASK; + actrl |= ((uninorth_rev < 3) ? UNI_N_ARB_CTRL_QACK_DELAY105 : UNI_N_ARB_CTRL_QACK_DELAY) + << UNI_N_ARB_CTRL_QACK_DELAY_SHIFT; + UN_OUT(UNI_N_ARB_CTRL, actrl); + + /* + * Turns OFF the gmac clock. The gmac driver will turn + * it back ON when the interface is enabled. This save + * power on portables. + * + * Note: We could also try to turn OFF the PHY. Since this + * has to be done by both the gmac driver and this code, + * I'll probably end-up moving some of this out of the + * modular gmac driver into a non-modular stub containing + * some basic PHY management and power management stuffs + */ + gmac = find_devices("ethernet"); + + while(gmac) { + if (device_is_compatible(gmac, "gmac")) + break; + gmac = gmac->next; + } + if (gmac) + feature_set_gmac_power(gmac, 0); +} + +/* Initialize the Core99 KeyLargo ASIC. Currently, we just make sure + * OpenPIC is enabled + */ +static void +keylargo_init(void) +{ + KL_BIS(KEYLARGO_FCR2, KL2_MPIC_ENABLE); +} + +#ifdef CONFIG_PMAC_PBOOK void feature_prepare_for_sleep(void) { @@ -506,27 +622,28 @@ feature_wake_up(void) } } -static u32 save_fcr0; -//static u32 save_fcr1; -//static u32 save_fcr2; +static u32 save_fcr[5]; static u32 save_mbcr; static void heathrow_prepare_for_sleep(struct feature_controller* ctrler) { save_mbcr = in_le32(FREG(ctrler, 0x34)); - save_fcr0 = in_le32(FREG(ctrler, 0x38)); + save_fcr[0] = in_le32(FREG(ctrler, 0x38)); + save_fcr[1] = in_le32(FREG(ctrler, 0x3c)); - out_le32(FREG(ctrler, 0x38), save_fcr0 & ~HRW_IOBUS_ENABLE); + out_le32(FREG(ctrler, 0x38), save_fcr[0] & ~HRW_IOBUS_ENABLE); } static void heathrow_wakeup(struct feature_controller* ctrler) { - out_le32(FREG(ctrler, 0x38), save_fcr0); + out_le32(FREG(ctrler, 0x38), save_fcr[0]); + out_le32(FREG(ctrler, 0x3c), save_fcr[1]); out_le32(FREG(ctrler, 0x34), save_mbcr); - - out_le32(FREG(ctrler, 0x38), save_fcr0 | HRW_IOBUS_ENABLE); + mdelay(1); + out_le32(FREG(ctrler, 0x38), save_fcr[0] | HRW_IOBUS_ENABLE); + mdelay(1); } static void @@ -540,4 +657,4 @@ core99_wake_up(struct feature_controller* ctrler) { /* Not yet implemented */ } - +#endif /* CONFIG_PMAC_PBOOK */ |