/* * Broadcom specific AMBA * Core ops * * Licensed under the GNU/GPL. See COPYING for details. */ #include "bcma_private.h"#include <linux/export.h>#include <linux/bcma/bcma.h> static bool bcma_core_wait_value(struct bcma_device *core, u16 reg, u32 mask,				 u32 value, int timeout){	unsigned long deadline = jiffies + timeout;	u32 val; 	do {		val = bcma_aread32(core, reg);		if ((val & mask) == value)			return true;		cpu_relax();		udelay(10);	} while (!time_after_eq(jiffies, deadline)); 	bcma_warn(core->bus, "Timeout waiting for register 0x%04X!\n", reg); 	return false;} bool bcma_core_is_enabled(struct bcma_device *core){	if ((bcma_aread32(core, BCMA_IOCTL) & (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC))	    != BCMA_IOCTL_CLK)		return false;	if (bcma_aread32(core, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET)		return false;	return true;}EXPORT_SYMBOL_GPL(bcma_core_is_enabled); void bcma_core_disable(struct bcma_device *core, u32 flags){	if (bcma_aread32(core, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET)		return; 	bcma_core_wait_value(core, BCMA_RESET_ST, ~0, 0, 300); 	bcma_awrite32(core, BCMA_RESET_CTL, BCMA_RESET_CTL_RESET);	bcma_aread32(core, BCMA_RESET_CTL);	udelay(1); 	bcma_awrite32(core, BCMA_IOCTL, flags);	bcma_aread32(core, BCMA_IOCTL);	udelay(10);}EXPORT_SYMBOL_GPL(bcma_core_disable); int bcma_core_enable(struct bcma_device *core, u32 flags){	bcma_core_disable(core, flags); 	bcma_awrite32(core, BCMA_IOCTL, (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC | flags));	bcma_aread32(core, BCMA_IOCTL); 	bcma_awrite32(core, BCMA_RESET_CTL, 0);	bcma_aread32(core, BCMA_RESET_CTL);	udelay(1); 	bcma_awrite32(core, BCMA_IOCTL, (BCMA_IOCTL_CLK | flags));	bcma_aread32(core, BCMA_IOCTL);	udelay(1); 	return 0;}EXPORT_SYMBOL_GPL(bcma_core_enable); void bcma_core_set_clockmode(struct bcma_device *core,			     enum bcma_clkmode clkmode){	u16 i; 	WARN_ON(core->id.id != BCMA_CORE_CHIPCOMMON &&		core->id.id != BCMA_CORE_PCIE &&		core->id.id != BCMA_CORE_80211); 	switch (clkmode) {	case BCMA_CLKMODE_FAST:		bcma_set32(core, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT);		usleep_range(64, 300);		for (i = 0; i < 1500; i++) {			if (bcma_read32(core, BCMA_CLKCTLST) &			    BCMA_CLKCTLST_HAVEHT) {				i = 0;				break;			}			udelay(10);		}		if (i)			bcma_err(core->bus, "HT force timeout\n");		break;	case BCMA_CLKMODE_DYNAMIC:		bcma_set32(core, BCMA_CLKCTLST, ~BCMA_CLKCTLST_FORCEHT);		break;	}}EXPORT_SYMBOL_GPL(bcma_core_set_clockmode); void bcma_core_pll_ctl(struct bcma_device *core, u32 req, u32 status, bool on){	u16 i; 	WARN_ON(req & ~BCMA_CLKCTLST_EXTRESREQ);	WARN_ON(status & ~BCMA_CLKCTLST_EXTRESST); 	if (on) {		bcma_set32(core, BCMA_CLKCTLST, req);		for (i = 0; i < 10000; i++) {			if ((bcma_read32(core, BCMA_CLKCTLST) & status) ==			    status) {				i = 0;				break;			}			udelay(10);		}		if (i)			bcma_err(core->bus, "PLL enable timeout\n");	} else {		/*		 * Mask the PLL but don't wait for it to be disabled. PLL may be		 * shared between cores and will be still up if there is another		 * core using it.		 */		bcma_mask32(core, BCMA_CLKCTLST, ~req);		bcma_read32(core, BCMA_CLKCTLST);	}}EXPORT_SYMBOL_GPL(bcma_core_pll_ctl); u32 bcma_core_dma_translation(struct bcma_device *core){	switch (core->bus->hosttype) {	case BCMA_HOSTTYPE_SOC:		return 0;	case BCMA_HOSTTYPE_PCI:		if (bcma_aread32(core, BCMA_IOST) & BCMA_IOST_DMA64)			return BCMA_DMA_TRANSLATION_DMA64_CMT;		else			return BCMA_DMA_TRANSLATION_DMA32_CMT;	default:		bcma_err(core->bus, "DMA translation unknown for host %d\n",			 core->bus->hosttype);	}	return BCMA_DMA_TRANSLATION_NONE;}EXPORT_SYMBOL(bcma_core_dma_translation);