[mirror_ubuntu-hirsute-kernel.git] / drivers / bcma / scan.c

/*
 * Broadcom specific AMBA
 * Bus scanning
 *
 * Licensed under the GNU/GPL. See COPYING for details.
 */

#include "scan.h"
#include "bcma_private.h"

#include <linux/bcma/bcma.h>
#include <linux/bcma/bcma_regs.h>
#include <linux/pci.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>

struct bcma_device_id_name {
	u16 id;
	const char *name;
};

static const struct bcma_device_id_name bcma_arm_device_names[] = {
	{ BCMA_CORE_ARM_1176, "ARM 1176" },
	{ BCMA_CORE_ARM_7TDMI, "ARM 7TDMI" },
	{ BCMA_CORE_ARM_CM3, "ARM CM3" },
};

static const struct bcma_device_id_name bcma_bcm_device_names[] = {
	{ BCMA_CORE_OOB_ROUTER, "OOB Router" },
	{ BCMA_CORE_4706_CHIPCOMMON, "BCM4706 ChipCommon" },
	{ BCMA_CORE_4706_SOC_RAM, "BCM4706 SOC RAM" },
	{ BCMA_CORE_4706_MAC_GBIT, "BCM4706 GBit MAC" },
	{ BCMA_CORE_AMEMC, "AMEMC (DDR)" },
	{ BCMA_CORE_ALTA, "ALTA (I2S)" },
	{ BCMA_CORE_4706_MAC_GBIT_COMMON, "BCM4706 GBit MAC Common" },
	{ BCMA_CORE_INVALID, "Invalid" },
	{ BCMA_CORE_CHIPCOMMON, "ChipCommon" },
	{ BCMA_CORE_ILINE20, "ILine 20" },
	{ BCMA_CORE_SRAM, "SRAM" },
	{ BCMA_CORE_SDRAM, "SDRAM" },
	{ BCMA_CORE_PCI, "PCI" },
	{ BCMA_CORE_ETHERNET, "Fast Ethernet" },
	{ BCMA_CORE_V90, "V90" },
	{ BCMA_CORE_USB11_HOSTDEV, "USB 1.1 Hostdev" },
	{ BCMA_CORE_ADSL, "ADSL" },
	{ BCMA_CORE_ILINE100, "ILine 100" },
	{ BCMA_CORE_IPSEC, "IPSEC" },
	{ BCMA_CORE_UTOPIA, "UTOPIA" },
	{ BCMA_CORE_PCMCIA, "PCMCIA" },
	{ BCMA_CORE_INTERNAL_MEM, "Internal Memory" },
	{ BCMA_CORE_MEMC_SDRAM, "MEMC SDRAM" },
	{ BCMA_CORE_OFDM, "OFDM" },
	{ BCMA_CORE_EXTIF, "EXTIF" },
	{ BCMA_CORE_80211, "IEEE 802.11" },
	{ BCMA_CORE_PHY_A, "PHY A" },
	{ BCMA_CORE_PHY_B, "PHY B" },
	{ BCMA_CORE_PHY_G, "PHY G" },
	{ BCMA_CORE_USB11_HOST, "USB 1.1 Host" },
	{ BCMA_CORE_USB11_DEV, "USB 1.1 Device" },
	{ BCMA_CORE_USB20_HOST, "USB 2.0 Host" },
	{ BCMA_CORE_USB20_DEV, "USB 2.0 Device" },
	{ BCMA_CORE_SDIO_HOST, "SDIO Host" },
	{ BCMA_CORE_ROBOSWITCH, "Roboswitch" },
	{ BCMA_CORE_PARA_ATA, "PATA" },
	{ BCMA_CORE_SATA_XORDMA, "SATA XOR-DMA" },
	{ BCMA_CORE_ETHERNET_GBIT, "GBit Ethernet" },
	{ BCMA_CORE_PCIE, "PCIe" },
	{ BCMA_CORE_PHY_N, "PHY N" },
	{ BCMA_CORE_SRAM_CTL, "SRAM Controller" },
	{ BCMA_CORE_MINI_MACPHY, "Mini MACPHY" },
	{ BCMA_CORE_PHY_LP, "PHY LP" },
	{ BCMA_CORE_PMU, "PMU" },
	{ BCMA_CORE_PHY_SSN, "PHY SSN" },
	{ BCMA_CORE_SDIO_DEV, "SDIO Device" },
	{ BCMA_CORE_PHY_HT, "PHY HT" },
	{ BCMA_CORE_MAC_GBIT, "GBit MAC" },
	{ BCMA_CORE_DDR12_MEM_CTL, "DDR1/DDR2 Memory Controller" },
	{ BCMA_CORE_PCIE_RC, "PCIe Root Complex" },
	{ BCMA_CORE_OCP_OCP_BRIDGE, "OCP to OCP Bridge" },
	{ BCMA_CORE_SHARED_COMMON, "Common Shared" },
	{ BCMA_CORE_OCP_AHB_BRIDGE, "OCP to AHB Bridge" },
	{ BCMA_CORE_SPI_HOST, "SPI Host" },
	{ BCMA_CORE_I2S, "I2S" },
	{ BCMA_CORE_SDR_DDR1_MEM_CTL, "SDR/DDR1 Memory Controller" },
	{ BCMA_CORE_SHIM, "SHIM" },
	{ BCMA_CORE_DEFAULT, "Default" },
};

static const struct bcma_device_id_name bcma_mips_device_names[] = {
	{ BCMA_CORE_MIPS, "MIPS" },
	{ BCMA_CORE_MIPS_3302, "MIPS 3302" },
	{ BCMA_CORE_MIPS_74K, "MIPS 74K" },
};

static const char *bcma_device_name(const struct bcma_device_id *id)
{
	const struct bcma_device_id_name *names;
	int size, i;

	/* search manufacturer specific names */
	switch (id->manuf) {
	case BCMA_MANUF_ARM:
		names = bcma_arm_device_names;
		size = ARRAY_SIZE(bcma_arm_device_names);
		break;
	case BCMA_MANUF_BCM:
		names = bcma_bcm_device_names;
		size = ARRAY_SIZE(bcma_bcm_device_names);
		break;
	case BCMA_MANUF_MIPS:
		names = bcma_mips_device_names;
		size = ARRAY_SIZE(bcma_mips_device_names);
		break;
	default:
		return "UNKNOWN";
	}

	for (i = 0; i < size; i++) {
		if (names[i].id == id->id)
			return names[i].name;
	}

	return "UNKNOWN";
}

static u32 bcma_scan_read32(struct bcma_bus *bus, u8 current_coreidx,
		       u16 offset)
{
	return readl(bus->mmio + offset);
}

static void bcma_scan_switch_core(struct bcma_bus *bus, u32 addr)
{
	if (bus->hosttype == BCMA_HOSTTYPE_PCI)
		pci_write_config_dword(bus->host_pci, BCMA_PCI_BAR0_WIN,
				       addr);
}

static u32 bcma_erom_get_ent(struct bcma_bus *bus, u32 **eromptr)
{
	u32 ent = readl(*eromptr);
	(*eromptr)++;
	return ent;
}

static void bcma_erom_push_ent(u32 **eromptr)
{
	(*eromptr)--;
}

static s32 bcma_erom_get_ci(struct bcma_bus *bus, u32 **eromptr)
{
	u32 ent = bcma_erom_get_ent(bus, eromptr);
	if (!(ent & SCAN_ER_VALID))
		return -ENOENT;
	if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_CI)
		return -ENOENT;
	return ent;
}

static bool bcma_erom_is_end(struct bcma_bus *bus, u32 **eromptr)
{
	u32 ent = bcma_erom_get_ent(bus, eromptr);
	bcma_erom_push_ent(eromptr);
	return (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID));
}

static bool bcma_erom_is_bridge(struct bcma_bus *bus, u32 **eromptr)
{
	u32 ent = bcma_erom_get_ent(bus, eromptr);
	bcma_erom_push_ent(eromptr);
	return (((ent & SCAN_ER_VALID)) &&
		((ent & SCAN_ER_TAGX) == SCAN_ER_TAG_ADDR) &&
		((ent & SCAN_ADDR_TYPE) == SCAN_ADDR_TYPE_BRIDGE));
}

static void bcma_erom_skip_component(struct bcma_bus *bus, u32 **eromptr)
{
	u32 ent;
	while (1) {
		ent = bcma_erom_get_ent(bus, eromptr);
		if ((ent & SCAN_ER_VALID) &&
		    ((ent & SCAN_ER_TAG) == SCAN_ER_TAG_CI))
			break;
		if (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID))
			break;
	}
	bcma_erom_push_ent(eromptr);
}

static s32 bcma_erom_get_mst_port(struct bcma_bus *bus, u32 **eromptr)
{
	u32 ent = bcma_erom_get_ent(bus, eromptr);
	if (!(ent & SCAN_ER_VALID))
		return -ENOENT;
	if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_MP)
		return -ENOENT;
	return ent;
}

static s32 bcma_erom_get_addr_desc(struct bcma_bus *bus, u32 **eromptr,
				  u32 type, u8 port)
{
	u32 addrl, addrh, sizel, sizeh = 0;
	u32 size;

	u32 ent = bcma_erom_get_ent(bus, eromptr);
	if ((!(ent & SCAN_ER_VALID)) ||
	    ((ent & SCAN_ER_TAGX) != SCAN_ER_TAG_ADDR) ||
	    ((ent & SCAN_ADDR_TYPE) != type) ||
	    (((ent & SCAN_ADDR_PORT) >> SCAN_ADDR_PORT_SHIFT) != port)) {
		bcma_erom_push_ent(eromptr);
		return -EINVAL;
	}

	addrl = ent & SCAN_ADDR_ADDR;
	if (ent & SCAN_ADDR_AG32)
		addrh = bcma_erom_get_ent(bus, eromptr);
	else
		addrh = 0;

	if ((ent & SCAN_ADDR_SZ) == SCAN_ADDR_SZ_SZD) {
		size = bcma_erom_get_ent(bus, eromptr);
		sizel = size & SCAN_SIZE_SZ;
		if (size & SCAN_SIZE_SG32)
			sizeh = bcma_erom_get_ent(bus, eromptr);
	} else
		sizel = SCAN_ADDR_SZ_BASE <<
				((ent & SCAN_ADDR_SZ) >> SCAN_ADDR_SZ_SHIFT);

	return addrl;
}

static struct bcma_device *bcma_find_core_by_index(struct bcma_bus *bus,
						   u16 index)
{
	struct bcma_device *core;

	list_for_each_entry(core, &bus->cores, list) {
		if (core->core_index == index)
			return core;
	}
	return NULL;
}

static struct bcma_device *bcma_find_core_reverse(struct bcma_bus *bus, u16 coreid)
{
	struct bcma_device *core;

	list_for_each_entry_reverse(core, &bus->cores, list) {
		if (core->id.id == coreid)
			return core;
	}
	return NULL;
}

static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,
			      struct bcma_device_id *match, int core_num,
			      struct bcma_device *core)
{
	s32 tmp;
	u8 i, j;
	s32 cia, cib;
	u8 ports[2], wrappers[2];

	/* get CIs */
	cia = bcma_erom_get_ci(bus, eromptr);
	if (cia < 0) {
		bcma_erom_push_ent(eromptr);
		if (bcma_erom_is_end(bus, eromptr))
			return -ESPIPE;
		return -EILSEQ;
	}
	cib = bcma_erom_get_ci(bus, eromptr);
	if (cib < 0)
		return -EILSEQ;

	/* parse CIs */
	core->id.class = (cia & SCAN_CIA_CLASS) >> SCAN_CIA_CLASS_SHIFT;
	core->id.id = (cia & SCAN_CIA_ID) >> SCAN_CIA_ID_SHIFT;
	core->id.manuf = (cia & SCAN_CIA_MANUF) >> SCAN_CIA_MANUF_SHIFT;
	ports[0] = (cib & SCAN_CIB_NMP) >> SCAN_CIB_NMP_SHIFT;
	ports[1] = (cib & SCAN_CIB_NSP) >> SCAN_CIB_NSP_SHIFT;
	wrappers[0] = (cib & SCAN_CIB_NMW) >> SCAN_CIB_NMW_SHIFT;
	wrappers[1] = (cib & SCAN_CIB_NSW) >> SCAN_CIB_NSW_SHIFT;
	core->id.rev = (cib & SCAN_CIB_REV) >> SCAN_CIB_REV_SHIFT;

	if (((core->id.manuf == BCMA_MANUF_ARM) &&
	     (core->id.id == 0xFFF)) ||
	    (ports[1] == 0)) {
		bcma_erom_skip_component(bus, eromptr);
		return -ENXIO;
	}

	/* check if component is a core at all */
	if (wrappers[0] + wrappers[1] == 0) {
		/* we could save addrl of the router
		if (cid == BCMA_CORE_OOB_ROUTER)
		 */
		bcma_erom_skip_component(bus, eromptr);
		return -ENXIO;
	}

	if (bcma_erom_is_bridge(bus, eromptr)) {
		bcma_erom_skip_component(bus, eromptr);
		return -ENXIO;
	}

	if (bcma_find_core_by_index(bus, core_num)) {
		bcma_erom_skip_component(bus, eromptr);
		return -ENODEV;
	}

	if (match && ((match->manuf != BCMA_ANY_MANUF &&
	      match->manuf != core->id.manuf) ||
	     (match->id != BCMA_ANY_ID && match->id != core->id.id) ||
	     (match->rev != BCMA_ANY_REV && match->rev != core->id.rev) ||
	     (match->class != BCMA_ANY_CLASS && match->class != core->id.class)
	    )) {
		bcma_erom_skip_component(bus, eromptr);
		return -ENODEV;
	}

	/* get & parse master ports */
	for (i = 0; i < ports[0]; i++) {
		s32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr);
		if (mst_port_d < 0)
			return -EILSEQ;
	}

	/* First Slave Address Descriptor should be port 0:
	 * the main register space for the core
	 */
	tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, 0);
	if (tmp <= 0) {
		/* Try again to see if it is a bridge */
		tmp = bcma_erom_get_addr_desc(bus, eromptr,
					      SCAN_ADDR_TYPE_BRIDGE, 0);
		if (tmp <= 0) {
			return -EILSEQ;
		} else {
			bcma_info(bus, "Bridge found\n");
			return -ENXIO;
		}
	}
	core->addr = tmp;

	/* get & parse slave ports */
	for (i = 0; i < ports[1]; i++) {
		for (j = 0; ; j++) {
			tmp = bcma_erom_get_addr_desc(bus, eromptr,
				SCAN_ADDR_TYPE_SLAVE, i);
			if (tmp < 0) {
				/* no more entries for port _i_ */
				/* pr_debug("erom: slave port %d "
				 * "has %d descriptors\n", i, j); */
				break;
			} else {
				if (i == 0 && j == 0)
					core->addr1 = tmp;
			}
		}
	}

	/* get & parse master wrappers */
	for (i = 0; i < wrappers[0]; i++) {
		for (j = 0; ; j++) {
			tmp = bcma_erom_get_addr_desc(bus, eromptr,
				SCAN_ADDR_TYPE_MWRAP, i);
			if (tmp < 0) {
				/* no more entries for port _i_ */
				/* pr_debug("erom: master wrapper %d "
				 * "has %d descriptors\n", i, j); */
				break;
			} else {
				if (i == 0 && j == 0)
					core->wrap = tmp;
			}
		}
	}

	/* get & parse slave wrappers */
	for (i = 0; i < wrappers[1]; i++) {
		u8 hack = (ports[1] == 1) ? 0 : 1;
		for (j = 0; ; j++) {
			tmp = bcma_erom_get_addr_desc(bus, eromptr,
				SCAN_ADDR_TYPE_SWRAP, i + hack);
			if (tmp < 0) {
				/* no more entries for port _i_ */
				/* pr_debug("erom: master wrapper %d "
				 * has %d descriptors\n", i, j); */
				break;
			} else {
				if (wrappers[0] == 0 && !i && !j)
					core->wrap = tmp;
			}
		}
	}
	if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
		core->io_addr = ioremap_nocache(core->addr, BCMA_CORE_SIZE);
		if (!core->io_addr)
			return -ENOMEM;
		core->io_wrap = ioremap_nocache(core->wrap, BCMA_CORE_SIZE);
		if (!core->io_wrap) {
			iounmap(core->io_addr);
			return -ENOMEM;
		}
	}
	return 0;
}

void bcma_init_bus(struct bcma_bus *bus)
{
	s32 tmp;
	struct bcma_chipinfo *chipinfo = &(bus->chipinfo);

	if (bus->init_done)
		return;

	INIT_LIST_HEAD(&bus->cores);
	bus->nr_cores = 0;

	bcma_scan_switch_core(bus, BCMA_ADDR_BASE);

	tmp = bcma_scan_read32(bus, 0, BCMA_CC_ID);
	chipinfo->id = (tmp & BCMA_CC_ID_ID) >> BCMA_CC_ID_ID_SHIFT;
	chipinfo->rev = (tmp & BCMA_CC_ID_REV) >> BCMA_CC_ID_REV_SHIFT;
	chipinfo->pkg = (tmp & BCMA_CC_ID_PKG) >> BCMA_CC_ID_PKG_SHIFT;
	bcma_info(bus, "Found chip with id 0x%04X, rev 0x%02X and package 0x%02X\n",
		  chipinfo->id, chipinfo->rev, chipinfo->pkg);

	bus->init_done = true;
}

int bcma_bus_scan(struct bcma_bus *bus)
{
	u32 erombase;
	u32 __iomem *eromptr, *eromend;

	int err, core_num = 0;

	bcma_init_bus(bus);

	erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
	if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
		eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE);
		if (!eromptr)
			return -ENOMEM;
	} else {
		eromptr = bus->mmio;
	}

	eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);

	bcma_scan_switch_core(bus, erombase);

	while (eromptr < eromend) {
		struct bcma_device *other_core;
		struct bcma_device *core = kzalloc(sizeof(*core), GFP_KERNEL);
		if (!core)
			return -ENOMEM;
		INIT_LIST_HEAD(&core->list);
		core->bus = bus;

		err = bcma_get_next_core(bus, &eromptr, NULL, core_num, core);
		if (err < 0) {
			kfree(core);
			if (err == -ENODEV) {
				core_num++;
				continue;
			} else if (err == -ENXIO) {
				continue;
			} else if (err == -ESPIPE) {
				break;
			}
			return err;
		}

		core->core_index = core_num++;
		bus->nr_cores++;
		other_core = bcma_find_core_reverse(bus, core->id.id);
		core->core_unit = (other_core == NULL) ? 0 : other_core->core_unit + 1;

		bcma_info(bus, "Core %d found: %s (manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
			  core->core_index, bcma_device_name(&core->id),
			  core->id.manuf, core->id.id, core->id.rev,
			  core->id.class);

		list_add(&core->list, &bus->cores);
	}

	if (bus->hosttype == BCMA_HOSTTYPE_SOC)
		iounmap(eromptr);

	return 0;
}

int __init bcma_bus_scan_early(struct bcma_bus *bus,
			       struct bcma_device_id *match,
			       struct bcma_device *core)
{
	u32 erombase;
	u32 __iomem *eromptr, *eromend;

	int err = -ENODEV;
	int core_num = 0;

	erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
	if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
		eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE);
		if (!eromptr)
			return -ENOMEM;
	} else {
		eromptr = bus->mmio;
	}

	eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);

	bcma_scan_switch_core(bus, erombase);

	while (eromptr < eromend) {
		memset(core, 0, sizeof(*core));
		INIT_LIST_HEAD(&core->list);
		core->bus = bus;

		err = bcma_get_next_core(bus, &eromptr, match, core_num, core);
		if (err == -ENODEV) {
			core_num++;
			continue;
		} else if (err == -ENXIO)
			continue;
		else if (err == -ESPIPE)
			break;
		else if (err < 0)
			return err;

		core->core_index = core_num++;
		bus->nr_cores++;
		bcma_info(bus, "Core %d found: %s (manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
			  core->core_index, bcma_device_name(&core->id),
			  core->id.manuf, core->id.id, core->id.rev,
			  core->id.class);

		list_add(&core->list, &bus->cores);
		err = 0;
		break;
	}

	if (bus->hosttype == BCMA_HOSTTYPE_SOC)
		iounmap(eromptr);

	return err;
}
Commit	Line	Data
8369ae33 RM	1	/*
	2	* Broadcom specific AMBA
	3	* Bus scanning
	4	*
	5	* Licensed under the GNU/GPL. See COPYING for details.
	6	*/
	7
	8	#include "scan.h"
	9	#include "bcma_private.h"
	10
	11	#include <linux/bcma/bcma.h>
	12	#include <linux/bcma/bcma_regs.h>
	13	#include <linux/pci.h>
	14	#include <linux/io.h>
	15	#include <linux/dma-mapping.h>
	16	#include <linux/slab.h>
	17
	18	struct bcma_device_id_name {
	19	u16 id;
	20	const char *name;
	21	};
82a7c2bb NH	22
	23	static const struct bcma_device_id_name bcma_arm_device_names[] = {
	24	{ BCMA_CORE_ARM_1176, "ARM 1176" },
	25	{ BCMA_CORE_ARM_7TDMI, "ARM 7TDMI" },
	26	{ BCMA_CORE_ARM_CM3, "ARM CM3" },
	27	};
	28
	29	static const struct bcma_device_id_name bcma_bcm_device_names[] = {
8369ae33	30	{ BCMA_CORE_OOB_ROUTER, "OOB Router" },
d2bb2b9e RM	31	{ BCMA_CORE_4706_CHIPCOMMON, "BCM4706 ChipCommon" },
	32	{ BCMA_CORE_4706_SOC_RAM, "BCM4706 SOC RAM" },
	33	{ BCMA_CORE_4706_MAC_GBIT, "BCM4706 GBit MAC" },
	34	{ BCMA_CORE_AMEMC, "AMEMC (DDR)" },
	35	{ BCMA_CORE_ALTA, "ALTA (I2S)" },
	36	{ BCMA_CORE_4706_MAC_GBIT_COMMON, "BCM4706 GBit MAC Common" },
8369ae33 RM	37	{ BCMA_CORE_INVALID, "Invalid" },
	38	{ BCMA_CORE_CHIPCOMMON, "ChipCommon" },
	39	{ BCMA_CORE_ILINE20, "ILine 20" },
	40	{ BCMA_CORE_SRAM, "SRAM" },
	41	{ BCMA_CORE_SDRAM, "SDRAM" },
	42	{ BCMA_CORE_PCI, "PCI" },
8369ae33 RM	43	{ BCMA_CORE_ETHERNET, "Fast Ethernet" },
	44	{ BCMA_CORE_V90, "V90" },
	45	{ BCMA_CORE_USB11_HOSTDEV, "USB 1.1 Hostdev" },
	46	{ BCMA_CORE_ADSL, "ADSL" },
	47	{ BCMA_CORE_ILINE100, "ILine 100" },
	48	{ BCMA_CORE_IPSEC, "IPSEC" },
	49	{ BCMA_CORE_UTOPIA, "UTOPIA" },
	50	{ BCMA_CORE_PCMCIA, "PCMCIA" },
	51	{ BCMA_CORE_INTERNAL_MEM, "Internal Memory" },
	52	{ BCMA_CORE_MEMC_SDRAM, "MEMC SDRAM" },
	53	{ BCMA_CORE_OFDM, "OFDM" },
	54	{ BCMA_CORE_EXTIF, "EXTIF" },
	55	{ BCMA_CORE_80211, "IEEE 802.11" },
	56	{ BCMA_CORE_PHY_A, "PHY A" },
	57	{ BCMA_CORE_PHY_B, "PHY B" },
	58	{ BCMA_CORE_PHY_G, "PHY G" },
8369ae33 RM	59	{ BCMA_CORE_USB11_HOST, "USB 1.1 Host" },
	60	{ BCMA_CORE_USB11_DEV, "USB 1.1 Device" },
	61	{ BCMA_CORE_USB20_HOST, "USB 2.0 Host" },
	62	{ BCMA_CORE_USB20_DEV, "USB 2.0 Device" },
	63	{ BCMA_CORE_SDIO_HOST, "SDIO Host" },
	64	{ BCMA_CORE_ROBOSWITCH, "Roboswitch" },
	65	{ BCMA_CORE_PARA_ATA, "PATA" },
	66	{ BCMA_CORE_SATA_XORDMA, "SATA XOR-DMA" },
	67	{ BCMA_CORE_ETHERNET_GBIT, "GBit Ethernet" },
	68	{ BCMA_CORE_PCIE, "PCIe" },
	69	{ BCMA_CORE_PHY_N, "PHY N" },
	70	{ BCMA_CORE_SRAM_CTL, "SRAM Controller" },
	71	{ BCMA_CORE_MINI_MACPHY, "Mini MACPHY" },
8369ae33 RM	72	{ BCMA_CORE_PHY_LP, "PHY LP" },
	73	{ BCMA_CORE_PMU, "PMU" },
	74	{ BCMA_CORE_PHY_SSN, "PHY SSN" },
	75	{ BCMA_CORE_SDIO_DEV, "SDIO Device" },
8369ae33	76	{ BCMA_CORE_PHY_HT, "PHY HT" },
8369ae33 RM	77	{ BCMA_CORE_MAC_GBIT, "GBit MAC" },
	78	{ BCMA_CORE_DDR12_MEM_CTL, "DDR1/DDR2 Memory Controller" },
	79	{ BCMA_CORE_PCIE_RC, "PCIe Root Complex" },
	80	{ BCMA_CORE_OCP_OCP_BRIDGE, "OCP to OCP Bridge" },
	81	{ BCMA_CORE_SHARED_COMMON, "Common Shared" },
	82	{ BCMA_CORE_OCP_AHB_BRIDGE, "OCP to AHB Bridge" },
	83	{ BCMA_CORE_SPI_HOST, "SPI Host" },
	84	{ BCMA_CORE_I2S, "I2S" },
	85	{ BCMA_CORE_SDR_DDR1_MEM_CTL, "SDR/DDR1 Memory Controller" },
	86	{ BCMA_CORE_SHIM, "SHIM" },
	87	{ BCMA_CORE_DEFAULT, "Default" },
	88	};
82a7c2bb NH	89
	90	static const struct bcma_device_id_name bcma_mips_device_names[] = {
	91	{ BCMA_CORE_MIPS, "MIPS" },
	92	{ BCMA_CORE_MIPS_3302, "MIPS 3302" },
	93	{ BCMA_CORE_MIPS_74K, "MIPS 74K" },
	94	};
	95
	96	static const char bcma_device_name(const struct bcma_device_id id)
8369ae33	97	{
82a7c2bb NH	98	const struct bcma_device_id_name *names;
82a7c2bb NH	99	int size, i;
8369ae33	100
82a7c2bb NH	101	/* search manufacturer specific names */
	102	switch (id->manuf) {
	103	case BCMA_MANUF_ARM:
	104	names = bcma_arm_device_names;
	105	size = ARRAY_SIZE(bcma_arm_device_names);
	106	break;
	107	case BCMA_MANUF_BCM:
	108	names = bcma_bcm_device_names;
	109	size = ARRAY_SIZE(bcma_bcm_device_names);
	110	break;
	111	case BCMA_MANUF_MIPS:
	112	names = bcma_mips_device_names;
	113	size = ARRAY_SIZE(bcma_mips_device_names);
	114	break;
	115	default:
	116	return "UNKNOWN";
8369ae33	117	}
82a7c2bb NH	118
	119	for (i = 0; i < size; i++) {
	120	if (names[i].id == id->id)
	121	return names[i].name;
	122	}
	123
8369ae33 RM	124	return "UNKNOWN";
	125	}
	126
	127	static u32 bcma_scan_read32(struct bcma_bus *bus, u8 current_coreidx,
	128	u16 offset)
	129	{
	130	return readl(bus->mmio + offset);
	131	}
	132
	133	static void bcma_scan_switch_core(struct bcma_bus *bus, u32 addr)
	134	{
	135	if (bus->hosttype == BCMA_HOSTTYPE_PCI)
	136	pci_write_config_dword(bus->host_pci, BCMA_PCI_BAR0_WIN,
	137	addr);
	138	}
	139
	140	static u32 bcma_erom_get_ent(struct bcma_bus bus, u32 *eromptr)
	141	{
	142	u32 ent = readl(*eromptr);
	143	(*eromptr)++;
	144	return ent;
	145	}
	146
	147	static void bcma_erom_push_ent(u32 **eromptr)
	148	{
	149	(*eromptr)--;
	150	}
	151
	152	static s32 bcma_erom_get_ci(struct bcma_bus bus, u32 *eromptr)
	153	{
	154	u32 ent = bcma_erom_get_ent(bus, eromptr);
	155	if (!(ent & SCAN_ER_VALID))
	156	return -ENOENT;
	157	if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_CI)
	158	return -ENOENT;
	159	return ent;
	160	}
	161
	162	static bool bcma_erom_is_end(struct bcma_bus bus, u32 *eromptr)
	163	{
	164	u32 ent = bcma_erom_get_ent(bus, eromptr);
	165	bcma_erom_push_ent(eromptr);
	166	return (ent == (SCAN_ER_TAG_END \| SCAN_ER_VALID));
	167	}
	168
	169	static bool bcma_erom_is_bridge(struct bcma_bus bus, u32 *eromptr)
	170	{
	171	u32 ent = bcma_erom_get_ent(bus, eromptr);
	172	bcma_erom_push_ent(eromptr);
	173	return (((ent & SCAN_ER_VALID)) &&
	174	((ent & SCAN_ER_TAGX) == SCAN_ER_TAG_ADDR) &&
	175	((ent & SCAN_ADDR_TYPE) == SCAN_ADDR_TYPE_BRIDGE));
	176	}
	177
	178	static void bcma_erom_skip_component(struct bcma_bus bus, u32 *eromptr)
	179	{
	180	u32 ent;
	181	while (1) {
	182	ent = bcma_erom_get_ent(bus, eromptr);
	183	if ((ent & SCAN_ER_VALID) &&
	184	((ent & SCAN_ER_TAG) == SCAN_ER_TAG_CI))
	185	break;
	186	if (ent == (SCAN_ER_TAG_END \| SCAN_ER_VALID))
	187	break;
188	}
189	bcma_erom_push_ent(eromptr);
190	}
191
192	static s32 bcma_erom_get_mst_port(struct bcma_bus bus, u32 *eromptr)
193	{
194	u32 ent = bcma_erom_get_ent(bus, eromptr);
195	if (!(ent & SCAN_ER_VALID))
196	return -ENOENT;
197	if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_MP)
198	return -ENOENT;
199	return ent;
200	}
201
202	static s32 bcma_erom_get_addr_desc(struct bcma_bus bus, u32 *eromptr,
203	u32 type, u8 port)
204	{
205	u32 addrl, addrh, sizel, sizeh = 0;
206	u32 size;
207
208	u32 ent = bcma_erom_get_ent(bus, eromptr);
209	if ((!(ent & SCAN_ER_VALID)) \|\|
210	((ent & SCAN_ER_TAGX) != SCAN_ER_TAG_ADDR) \|\|
211	((ent & SCAN_ADDR_TYPE) != type) \|\|
212	(((ent & SCAN_ADDR_PORT) >> SCAN_ADDR_PORT_SHIFT) != port)) {
213	bcma_erom_push_ent(eromptr);
214	return -EINVAL;
215	}
216
217	addrl = ent & SCAN_ADDR_ADDR;
218	if (ent & SCAN_ADDR_AG32)
219	addrh = bcma_erom_get_ent(bus, eromptr);
220	else
221	addrh = 0;
222
223	if ((ent & SCAN_ADDR_SZ) == SCAN_ADDR_SZ_SZD) {
224	size = bcma_erom_get_ent(bus, eromptr);
225	sizel = size & SCAN_SIZE_SZ;
226	if (size & SCAN_SIZE_SG32)
227	sizeh = bcma_erom_get_ent(bus, eromptr);
228	} else
229	sizel = SCAN_ADDR_SZ_BASE <<
230	((ent & SCAN_ADDR_SZ) >> SCAN_ADDR_SZ_SHIFT);
231
232	return addrl;
233	}
234
517f43e5 HM	235	static struct bcma_device bcma_find_core_by_index(struct bcma_bus bus,
	236	u16 index)
	237	{
	238	struct bcma_device *core;
	239
	240	list_for_each_entry(core, &bus->cores, list) {
	241	if (core->core_index == index)
	242	return core;
	243	}
	244	return NULL;
	245	}
	246
5f2d6171 HM	247	static struct bcma_device bcma_find_core_reverse(struct bcma_bus bus, u16 coreid)
	248	{
	249	struct bcma_device *core;
	250
	251	list_for_each_entry_reverse(core, &bus->cores, list) {
	252	if (core->id.id == coreid)
	253	return core;
	254	}
	255	return NULL;
	256	}
	257
982eee67	258	static int bcma_get_next_core(struct bcma_bus bus, u32 __iomem *eromptr,
517f43e5	259	struct bcma_device_id *match, int core_num,
982eee67 HM	260	struct bcma_device *core)
	261	{
	262	s32 tmp;
	263	u8 i, j;
	264	s32 cia, cib;
	265	u8 ports[2], wrappers[2];
	266
	267	/* get CIs */
	268	cia = bcma_erom_get_ci(bus, eromptr);
	269	if (cia < 0) {
	270	bcma_erom_push_ent(eromptr);
	271	if (bcma_erom_is_end(bus, eromptr))
	272	return -ESPIPE;
	273	return -EILSEQ;
	274	}
	275	cib = bcma_erom_get_ci(bus, eromptr);
	276	if (cib < 0)
	277	return -EILSEQ;
	278
	279	/* parse CIs */
	280	core->id.class = (cia & SCAN_CIA_CLASS) >> SCAN_CIA_CLASS_SHIFT;
	281	core->id.id = (cia & SCAN_CIA_ID) >> SCAN_CIA_ID_SHIFT;
	282	core->id.manuf = (cia & SCAN_CIA_MANUF) >> SCAN_CIA_MANUF_SHIFT;
	283	ports[0] = (cib & SCAN_CIB_NMP) >> SCAN_CIB_NMP_SHIFT;
	284	ports[1] = (cib & SCAN_CIB_NSP) >> SCAN_CIB_NSP_SHIFT;
	285	wrappers[0] = (cib & SCAN_CIB_NMW) >> SCAN_CIB_NMW_SHIFT;
	286	wrappers[1] = (cib & SCAN_CIB_NSW) >> SCAN_CIB_NSW_SHIFT;
	287	core->id.rev = (cib & SCAN_CIB_REV) >> SCAN_CIB_REV_SHIFT;
	288
	289	if (((core->id.manuf == BCMA_MANUF_ARM) &&
	290	(core->id.id == 0xFFF)) \|\|
	291	(ports[1] == 0)) {
	292	bcma_erom_skip_component(bus, eromptr);
	293	return -ENXIO;
	294	}
	295
	296	/* check if component is a core at all */
	297	if (wrappers[0] + wrappers[1] == 0) {
	298	/* we could save addrl of the router
	299	if (cid == BCMA_CORE_OOB_ROUTER)
	300	*/
	301	bcma_erom_skip_component(bus, eromptr);
	302	return -ENXIO;
	303	}
	304
	305	if (bcma_erom_is_bridge(bus, eromptr)) {
	306	bcma_erom_skip_component(bus, eromptr);
	307	return -ENXIO;
	308	}
	309
517f43e5 HM	310	if (bcma_find_core_by_index(bus, core_num)) {
	311	bcma_erom_skip_component(bus, eromptr);
	312	return -ENODEV;
	313	}
	314
	315	if (match && ((match->manuf != BCMA_ANY_MANUF &&
	316	match->manuf != core->id.manuf) \|\|
	317	(match->id != BCMA_ANY_ID && match->id != core->id.id) \|\|
	318	(match->rev != BCMA_ANY_REV && match->rev != core->id.rev) \|\|
	319	(match->class != BCMA_ANY_CLASS && match->class != core->id.class)
	320	)) {
	321	bcma_erom_skip_component(bus, eromptr);
	322	return -ENODEV;
	323	}
	324
982eee67 HM	325	/* get & parse master ports */
982eee67 HM	326	for (i = 0; i < ports[0]; i++) {
4e0d8cc1	327	s32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr);
982eee67 HM	328	if (mst_port_d < 0)
	329	return -EILSEQ;
	330	}
	331
e167d9fb HM	332	/* First Slave Address Descriptor should be port 0:
	333	* the main register space for the core
	334	*/
	335	tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, 0);
	336	if (tmp <= 0) {
	337	/* Try again to see if it is a bridge */
	338	tmp = bcma_erom_get_addr_desc(bus, eromptr,
	339	SCAN_ADDR_TYPE_BRIDGE, 0);
	340	if (tmp <= 0) {
	341	return -EILSEQ;
	342	} else {
3d9d8af3	343	bcma_info(bus, "Bridge found\n");
e167d9fb HM	344	return -ENXIO;
	345	}
	346	}
	347	core->addr = tmp;
	348
982eee67 HM	349	/* get & parse slave ports */
	350	for (i = 0; i < ports[1]; i++) {
	351	for (j = 0; ; j++) {
	352	tmp = bcma_erom_get_addr_desc(bus, eromptr,
	353	SCAN_ADDR_TYPE_SLAVE, i);
	354	if (tmp < 0) {
	355	/* no more entries for port _i_ */
	356	/* pr_debug("erom: slave port %d "
	357	* "has %d descriptors\n", i, j); */
	358	break;
	359	} else {
	360	if (i == 0 && j == 0)
e167d9fb	361	core->addr1 = tmp;
982eee67 HM	362	}
	363	}
	364	}
	365
	366	/* get & parse master wrappers */
	367	for (i = 0; i < wrappers[0]; i++) {
	368	for (j = 0; ; j++) {
	369	tmp = bcma_erom_get_addr_desc(bus, eromptr,
	370	SCAN_ADDR_TYPE_MWRAP, i);
	371	if (tmp < 0) {
	372	/* no more entries for port _i_ */
	373	/* pr_debug("erom: master wrapper %d "
	374	* "has %d descriptors\n", i, j); */
	375	break;
	376	} else {
	377	if (i == 0 && j == 0)
	378	core->wrap = tmp;
	379	}
	380	}
	381	}
	382
	383	/* get & parse slave wrappers */
	384	for (i = 0; i < wrappers[1]; i++) {
	385	u8 hack = (ports[1] == 1) ? 0 : 1;
	386	for (j = 0; ; j++) {
	387	tmp = bcma_erom_get_addr_desc(bus, eromptr,
	388	SCAN_ADDR_TYPE_SWRAP, i + hack);
	389	if (tmp < 0) {
	390	/* no more entries for port _i_ */
	391	/* pr_debug("erom: master wrapper %d "
	392	* has %d descriptors\n", i, j); */
	393	break;
	394	} else {
	395	if (wrappers[0] == 0 && !i && !j)
	396	core->wrap = tmp;
	397	}
	398	}
	399	}
ecd177c2 HM	400	if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
	401	core->io_addr = ioremap_nocache(core->addr, BCMA_CORE_SIZE);
	402	if (!core->io_addr)
	403	return -ENOMEM;
	404	core->io_wrap = ioremap_nocache(core->wrap, BCMA_CORE_SIZE);
	405	if (!core->io_wrap) {
	406	iounmap(core->io_addr);
	407	return -ENOMEM;
	408	}
	409	}
982eee67 HM	410	return 0;
	411	}
	412
517f43e5	413	void bcma_init_bus(struct bcma_bus *bus)
8369ae33	414	{
8369ae33	415	s32 tmp;
f0d4724b	416	struct bcma_chipinfo *chipinfo = &(bus->chipinfo);
8369ae33	417
517f43e5 HM	418	if (bus->init_done)
	419	return;
	420
8369ae33 RM	421	INIT_LIST_HEAD(&bus->cores);
	422	bus->nr_cores = 0;
	423
	424	bcma_scan_switch_core(bus, BCMA_ADDR_BASE);
	425
	426	tmp = bcma_scan_read32(bus, 0, BCMA_CC_ID);
f0d4724b HM	427	chipinfo->id = (tmp & BCMA_CC_ID_ID) >> BCMA_CC_ID_ID_SHIFT;
	428	chipinfo->rev = (tmp & BCMA_CC_ID_REV) >> BCMA_CC_ID_REV_SHIFT;
	429	chipinfo->pkg = (tmp & BCMA_CC_ID_PKG) >> BCMA_CC_ID_PKG_SHIFT;
3d9d8af3 RM	430	bcma_info(bus, "Found chip with id 0x%04X, rev 0x%02X and package 0x%02X\n",
3d9d8af3 RM	431	chipinfo->id, chipinfo->rev, chipinfo->pkg);
f0d4724b	432
517f43e5	433	bus->init_done = true;
67a5c29e HM	434	}
	435
	436	int bcma_bus_scan(struct bcma_bus *bus)
	437	{
	438	u32 erombase;
	439	u32 __iomem eromptr, eromend;
	440
517f43e5	441	int err, core_num = 0;
67a5c29e HM	442
67a5c29e HM	443	bcma_init_bus(bus);
8369ae33 RM	444
8369ae33 RM	445	erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
ecd177c2 HM	446	if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
	447	eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE);
	448	if (!eromptr)
	449	return -ENOMEM;
	450	} else {
	451	eromptr = bus->mmio;
	452	}
	453
8369ae33 RM	454	eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);
	455
	456	bcma_scan_switch_core(bus, erombase);
	457
	458	while (eromptr < eromend) {
5f2d6171	459	struct bcma_device *other_core;
8369ae33 RM	460	struct bcma_device core = kzalloc(sizeof(core), GFP_KERNEL);
	461	if (!core)
	462	return -ENOMEM;
	463	INIT_LIST_HEAD(&core->list);
	464	core->bus = bus;
	465
517f43e5	466	err = bcma_get_next_core(bus, &eromptr, NULL, core_num, core);
f9721ed2 JJ	467	if (err < 0) {
	468	kfree(core);
	469	if (err == -ENODEV) {
	470	core_num++;
	471	continue;
	472	} else if (err == -ENXIO) {
	473	continue;
	474	} else if (err == -ESPIPE) {
	475	break;
	476	}
982eee67	477	return err;
f9721ed2	478	}
8369ae33	479
517f43e5 HM	480	core->core_index = core_num++;
517f43e5 HM	481	bus->nr_cores++;
5f2d6171 HM	482	other_core = bcma_find_core_reverse(bus, core->id.id);
5f2d6171 HM	483	core->core_unit = (other_core == NULL) ? 0 : other_core->core_unit + 1;
517f43e5	484
3d9d8af3 RM	485	bcma_info(bus, "Core %d found: %s (manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
	486	core->core_index, bcma_device_name(&core->id),
	487	core->id.manuf, core->id.id, core->id.rev,
	488	core->id.class);
8369ae33	489
8369ae33	490	list_add(&core->list, &bus->cores);
8369ae33 RM	491	}
8369ae33 RM	492
ecd177c2 HM	493	if (bus->hosttype == BCMA_HOSTTYPE_SOC)
	494	iounmap(eromptr);
	495
8369ae33 RM	496	return 0;
8369ae33 RM	497	}
517f43e5 HM	498
	499	int __init bcma_bus_scan_early(struct bcma_bus *bus,
	500	struct bcma_device_id *match,
	501	struct bcma_device *core)
	502	{
	503	u32 erombase;
	504	u32 __iomem eromptr, eromend;
	505
ecd177c2 HM	506	int err = -ENODEV;
ecd177c2 HM	507	int core_num = 0;
517f43e5 HM	508
517f43e5 HM	509	erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
ecd177c2 HM	510	if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
	511	eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE);
	512	if (!eromptr)
	513	return -ENOMEM;
	514	} else {
	515	eromptr = bus->mmio;
	516	}
	517
517f43e5 HM	518	eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);
	519
	520	bcma_scan_switch_core(bus, erombase);
	521
	522	while (eromptr < eromend) {
	523	memset(core, 0, sizeof(*core));
	524	INIT_LIST_HEAD(&core->list);
	525	core->bus = bus;
	526
	527	err = bcma_get_next_core(bus, &eromptr, match, core_num, core);
	528	if (err == -ENODEV) {
	529	core_num++;
	530	continue;
	531	} else if (err == -ENXIO)
	532	continue;
	533	else if (err == -ESPIPE)
	534	break;
	535	else if (err < 0)
	536	return err;
	537
	538	core->core_index = core_num++;
	539	bus->nr_cores++;
3d9d8af3 RM	540	bcma_info(bus, "Core %d found: %s (manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
	541	core->core_index, bcma_device_name(&core->id),
	542	core->id.manuf, core->id.id, core->id.rev,
	543	core->id.class);
517f43e5 HM	544
517f43e5 HM	545	list_add(&core->list, &bus->cores);
ecd177c2 HM	546	err = 0;
ecd177c2 HM	547	break;
517f43e5 HM	548	}
517f43e5 HM	549
ecd177c2 HM	550	if (bus->hosttype == BCMA_HOSTTYPE_SOC)
	551	iounmap(eromptr);
	552
	553	return err;
517f43e5	554	}