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1// SPDX-License-Identifier: GPL-2.0-only2/*****************************************************************************3 *                                                                           *4 * File: subr.c                                                              *5 * $Revision: 1.27 $                                                         *6 * $Date: 2005/06/22 01:08:36 $                                              *7 * Description:                                                              *8 *  Various subroutines (intr,pio,etc.) used by Chelsio 10G Ethernet driver. *9 *  part of the Chelsio 10Gb Ethernet Driver.                                *10 *                                                                           *11 *                                                                           *12 * http://www.chelsio.com                                                    *13 *                                                                           *14 * Copyright (c) 2003 - 2005 Chelsio Communications, Inc.                    *15 * All rights reserved.                                                      *16 *                                                                           *17 * Maintainers: maintainers@chelsio.com                                      *18 *                                                                           *19 * Authors: Dimitrios Michailidis   <dm@chelsio.com>                         *20 *          Tina Yang               <tainay@chelsio.com>                     *21 *          Felix Marti             <felix@chelsio.com>                      *22 *          Scott Bardone           <sbardone@chelsio.com>                   *23 *          Kurt Ottaway            <kottaway@chelsio.com>                   *24 *          Frank DiMambro          <frank@chelsio.com>                      *25 *                                                                           *26 * History:                                                                  *27 *                                                                           *28 ****************************************************************************/29 30#include "common.h"31#include "elmer0.h"32#include "regs.h"33#include "gmac.h"34#include "cphy.h"35#include "sge.h"36#include "tp.h"37#include "espi.h"38 39/**40 *	t1_wait_op_done - wait until an operation is completed41 *	@adapter: the adapter performing the operation42 *	@reg: the register to check for completion43 *	@mask: a single-bit field within @reg that indicates completion44 *	@polarity: the value of the field when the operation is completed45 *	@attempts: number of check iterations46 *      @delay: delay in usecs between iterations47 *48 *	Wait until an operation is completed by checking a bit in a register49 *	up to @attempts times.  Returns %0 if the operation completes and %150 *	otherwise.51 */52static int t1_wait_op_done(adapter_t *adapter, int reg, u32 mask, int polarity,53			   int attempts, int delay)54{55	while (1) {56		u32 val = readl(adapter->regs + reg) & mask;57 58		if (!!val == polarity)59			return 0;60		if (--attempts == 0)61			return 1;62		if (delay)63			udelay(delay);64	}65}66 67#define TPI_ATTEMPTS 5068 69/*70 * Write a register over the TPI interface (unlocked and locked versions).71 */72int __t1_tpi_write(adapter_t *adapter, u32 addr, u32 value)73{74	int tpi_busy;75 76	writel(addr, adapter->regs + A_TPI_ADDR);77	writel(value, adapter->regs + A_TPI_WR_DATA);78	writel(F_TPIWR, adapter->regs + A_TPI_CSR);79 80	tpi_busy = t1_wait_op_done(adapter, A_TPI_CSR, F_TPIRDY, 1,81				   TPI_ATTEMPTS, 3);82	if (tpi_busy)83		pr_alert("%s: TPI write to 0x%x failed\n",84			 adapter->name, addr);85	return tpi_busy;86}87 88int t1_tpi_write(adapter_t *adapter, u32 addr, u32 value)89{90	int ret;91 92	spin_lock(&adapter->tpi_lock);93	ret = __t1_tpi_write(adapter, addr, value);94	spin_unlock(&adapter->tpi_lock);95	return ret;96}97 98/*99 * Read a register over the TPI interface (unlocked and locked versions).100 */101int __t1_tpi_read(adapter_t *adapter, u32 addr, u32 *valp)102{103	int tpi_busy;104 105	writel(addr, adapter->regs + A_TPI_ADDR);106	writel(0, adapter->regs + A_TPI_CSR);107 108	tpi_busy = t1_wait_op_done(adapter, A_TPI_CSR, F_TPIRDY, 1,109				   TPI_ATTEMPTS, 3);110	if (tpi_busy)111		pr_alert("%s: TPI read from 0x%x failed\n",112			 adapter->name, addr);113	else114		*valp = readl(adapter->regs + A_TPI_RD_DATA);115	return tpi_busy;116}117 118int t1_tpi_read(adapter_t *adapter, u32 addr, u32 *valp)119{120	int ret;121 122	spin_lock(&adapter->tpi_lock);123	ret = __t1_tpi_read(adapter, addr, valp);124	spin_unlock(&adapter->tpi_lock);125	return ret;126}127 128/*129 * Set a TPI parameter.130 */131static void t1_tpi_par(adapter_t *adapter, u32 value)132{133	writel(V_TPIPAR(value), adapter->regs + A_TPI_PAR);134}135 136/*137 * Called when a port's link settings change to propagate the new values to the138 * associated PHY and MAC.  After performing the common tasks it invokes an139 * OS-specific handler.140 */141void t1_link_changed(adapter_t *adapter, int port_id)142{143	int link_ok, speed, duplex, fc;144	struct cphy *phy = adapter->port[port_id].phy;145	struct link_config *lc = &adapter->port[port_id].link_config;146 147	phy->ops->get_link_status(phy, &link_ok, &speed, &duplex, &fc);148 149	lc->speed = speed < 0 ? SPEED_INVALID : speed;150	lc->duplex = duplex < 0 ? DUPLEX_INVALID : duplex;151	if (!(lc->requested_fc & PAUSE_AUTONEG))152		fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);153 154	if (link_ok && speed >= 0 && lc->autoneg == AUTONEG_ENABLE) {155		/* Set MAC speed, duplex, and flow control to match PHY. */156		struct cmac *mac = adapter->port[port_id].mac;157 158		mac->ops->set_speed_duplex_fc(mac, speed, duplex, fc);159		lc->fc = (unsigned char)fc;160	}161	t1_link_negotiated(adapter, port_id, link_ok, speed, duplex, fc);162}163 164static bool t1_pci_intr_handler(adapter_t *adapter)165{166	u32 pcix_cause;167 168	pci_read_config_dword(adapter->pdev, A_PCICFG_INTR_CAUSE, &pcix_cause);169 170	if (pcix_cause) {171		pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_CAUSE,172				       pcix_cause);173		/* PCI errors are fatal */174		t1_interrupts_disable(adapter);175		adapter->pending_thread_intr |= F_PL_INTR_SGE_ERR;176		pr_alert("%s: PCI error encountered.\n", adapter->name);177		return true;178	}179	return false;180}181 182#ifdef CONFIG_CHELSIO_T1_1G183#include "fpga_defs.h"184 185/*186 * PHY interrupt handler for FPGA boards.187 */188static int fpga_phy_intr_handler(adapter_t *adapter)189{190	int p;191	u32 cause = readl(adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE);192 193	for_each_port(adapter, p)194		if (cause & (1 << p)) {195			struct cphy *phy = adapter->port[p].phy;196			int phy_cause = phy->ops->interrupt_handler(phy);197 198			if (phy_cause & cphy_cause_link_change)199				t1_link_changed(adapter, p);200		}201	writel(cause, adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE);202	return 0;203}204 205/*206 * Slow path interrupt handler for FPGAs.207 */208static irqreturn_t fpga_slow_intr(adapter_t *adapter)209{210	u32 cause = readl(adapter->regs + A_PL_CAUSE);211	irqreturn_t ret = IRQ_NONE;212 213	cause &= ~F_PL_INTR_SGE_DATA;214	if (cause & F_PL_INTR_SGE_ERR) {215		if (t1_sge_intr_error_handler(adapter->sge))216			ret = IRQ_WAKE_THREAD;217	}218 219	if (cause & FPGA_PCIX_INTERRUPT_GMAC)220		fpga_phy_intr_handler(adapter);221 222	if (cause & FPGA_PCIX_INTERRUPT_TP) {223		/*224		 * FPGA doesn't support MC4 interrupts and it requires225		 * this odd layer of indirection for MC5.226		 */227		u32 tp_cause = readl(adapter->regs + FPGA_TP_ADDR_INTERRUPT_CAUSE);228 229		/* Clear TP interrupt */230		writel(tp_cause, adapter->regs + FPGA_TP_ADDR_INTERRUPT_CAUSE);231	}232	if (cause & FPGA_PCIX_INTERRUPT_PCIX) {233		if (t1_pci_intr_handler(adapter))234			ret = IRQ_WAKE_THREAD;235	}236 237	/* Clear the interrupts just processed. */238	if (cause)239		writel(cause, adapter->regs + A_PL_CAUSE);240 241	if (ret != IRQ_NONE)242		return ret;243 244	return cause == 0 ? IRQ_NONE : IRQ_HANDLED;245}246#endif247 248/*249 * Wait until Elmer's MI1 interface is ready for new operations.250 */251static int mi1_wait_until_ready(adapter_t *adapter, int mi1_reg)252{253	int attempts = 100, busy;254 255	do {256		u32 val;257 258		__t1_tpi_read(adapter, mi1_reg, &val);259		busy = val & F_MI1_OP_BUSY;260		if (busy)261			udelay(10);262	} while (busy && --attempts);263	if (busy)264		pr_alert("%s: MDIO operation timed out\n", adapter->name);265	return busy;266}267 268/*269 * MI1 MDIO initialization.270 */271static void mi1_mdio_init(adapter_t *adapter, const struct board_info *bi)272{273	u32 clkdiv = bi->clock_elmer0 / (2 * bi->mdio_mdc) - 1;274	u32 val = F_MI1_PREAMBLE_ENABLE | V_MI1_MDI_INVERT(bi->mdio_mdiinv) |275		V_MI1_MDI_ENABLE(bi->mdio_mdien) | V_MI1_CLK_DIV(clkdiv);276 277	if (!(bi->caps & SUPPORTED_10000baseT_Full))278		val |= V_MI1_SOF(1);279	t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_CFG, val);280}281 282#if defined(CONFIG_CHELSIO_T1_1G)283/*284 * Elmer MI1 MDIO read/write operations.285 */286static int mi1_mdio_read(struct net_device *dev, int phy_addr, int mmd_addr,287			 u16 reg_addr)288{289	struct adapter *adapter = dev->ml_priv;290	u32 addr = V_MI1_REG_ADDR(reg_addr) | V_MI1_PHY_ADDR(phy_addr);291	unsigned int val;292 293	spin_lock(&adapter->tpi_lock);294	__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);295	__t1_tpi_write(adapter,296			A_ELMER0_PORT0_MI1_OP, MI1_OP_DIRECT_READ);297	mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);298	__t1_tpi_read(adapter, A_ELMER0_PORT0_MI1_DATA, &val);299	spin_unlock(&adapter->tpi_lock);300	return val;301}302 303static int mi1_mdio_write(struct net_device *dev, int phy_addr, int mmd_addr,304			  u16 reg_addr, u16 val)305{306	struct adapter *adapter = dev->ml_priv;307	u32 addr = V_MI1_REG_ADDR(reg_addr) | V_MI1_PHY_ADDR(phy_addr);308 309	spin_lock(&adapter->tpi_lock);310	__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);311	__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, val);312	__t1_tpi_write(adapter,313			A_ELMER0_PORT0_MI1_OP, MI1_OP_DIRECT_WRITE);314	mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);315	spin_unlock(&adapter->tpi_lock);316	return 0;317}318 319static const struct mdio_ops mi1_mdio_ops = {320	.init = mi1_mdio_init,321	.read = mi1_mdio_read,322	.write = mi1_mdio_write,323	.mode_support = MDIO_SUPPORTS_C22324};325 326#endif327 328static int mi1_mdio_ext_read(struct net_device *dev, int phy_addr, int mmd_addr,329			     u16 reg_addr)330{331	struct adapter *adapter = dev->ml_priv;332	u32 addr = V_MI1_REG_ADDR(mmd_addr) | V_MI1_PHY_ADDR(phy_addr);333	unsigned int val;334 335	spin_lock(&adapter->tpi_lock);336 337	/* Write the address we want. */338	__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);339	__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, reg_addr);340	__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP,341		       MI1_OP_INDIRECT_ADDRESS);342	mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);343 344	/* Write the operation we want. */345	__t1_tpi_write(adapter,346			A_ELMER0_PORT0_MI1_OP, MI1_OP_INDIRECT_READ);347	mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);348 349	/* Read the data. */350	__t1_tpi_read(adapter, A_ELMER0_PORT0_MI1_DATA, &val);351	spin_unlock(&adapter->tpi_lock);352	return val;353}354 355static int mi1_mdio_ext_write(struct net_device *dev, int phy_addr,356			      int mmd_addr, u16 reg_addr, u16 val)357{358	struct adapter *adapter = dev->ml_priv;359	u32 addr = V_MI1_REG_ADDR(mmd_addr) | V_MI1_PHY_ADDR(phy_addr);360 361	spin_lock(&adapter->tpi_lock);362 363	/* Write the address we want. */364	__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_ADDR, addr);365	__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, reg_addr);366	__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP,367		       MI1_OP_INDIRECT_ADDRESS);368	mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);369 370	/* Write the data. */371	__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_DATA, val);372	__t1_tpi_write(adapter, A_ELMER0_PORT0_MI1_OP, MI1_OP_INDIRECT_WRITE);373	mi1_wait_until_ready(adapter, A_ELMER0_PORT0_MI1_OP);374	spin_unlock(&adapter->tpi_lock);375	return 0;376}377 378static const struct mdio_ops mi1_mdio_ext_ops = {379	.init = mi1_mdio_init,380	.read = mi1_mdio_ext_read,381	.write = mi1_mdio_ext_write,382	.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22383};384 385enum {386	CH_BRD_T110_1CU,387	CH_BRD_N110_1F,388	CH_BRD_N210_1F,389	CH_BRD_T210_1F,390	CH_BRD_T210_1CU,391	CH_BRD_N204_4CU,392};393 394static const struct board_info t1_board[] = {395	{396		.board		= CHBT_BOARD_CHT110,397		.port_number	= 1,398		.caps		= SUPPORTED_10000baseT_Full,399		.chip_term	= CHBT_TERM_T1,400		.chip_mac	= CHBT_MAC_PM3393,401		.chip_phy	= CHBT_PHY_MY3126,402		.clock_core	= 125000000,403		.clock_mc3	= 150000000,404		.clock_mc4	= 125000000,405		.espi_nports	= 1,406		.clock_elmer0	= 44,407		.mdio_mdien	= 1,408		.mdio_mdiinv	= 1,409		.mdio_mdc	= 1,410		.mdio_phybaseaddr = 1,411		.gmac		= &t1_pm3393_ops,412		.gphy		= &t1_my3126_ops,413		.mdio_ops	= &mi1_mdio_ext_ops,414		.desc		= "Chelsio T110 1x10GBase-CX4 TOE",415	},416 417	{418		.board		= CHBT_BOARD_N110,419		.port_number	= 1,420		.caps		= SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE,421		.chip_term	= CHBT_TERM_T1,422		.chip_mac	= CHBT_MAC_PM3393,423		.chip_phy	= CHBT_PHY_88X2010,424		.clock_core	= 125000000,425		.espi_nports	= 1,426		.clock_elmer0	= 44,427		.mdio_mdien	= 0,428		.mdio_mdiinv	= 0,429		.mdio_mdc	= 1,430		.mdio_phybaseaddr = 0,431		.gmac		= &t1_pm3393_ops,432		.gphy		= &t1_mv88x201x_ops,433		.mdio_ops	= &mi1_mdio_ext_ops,434		.desc		= "Chelsio N110 1x10GBaseX NIC",435	},436 437	{438		.board		= CHBT_BOARD_N210,439		.port_number	= 1,440		.caps		= SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE,441		.chip_term	= CHBT_TERM_T2,442		.chip_mac	= CHBT_MAC_PM3393,443		.chip_phy	= CHBT_PHY_88X2010,444		.clock_core	= 125000000,445		.espi_nports	= 1,446		.clock_elmer0	= 44,447		.mdio_mdien	= 0,448		.mdio_mdiinv	= 0,449		.mdio_mdc	= 1,450		.mdio_phybaseaddr = 0,451		.gmac		= &t1_pm3393_ops,452		.gphy		= &t1_mv88x201x_ops,453		.mdio_ops	= &mi1_mdio_ext_ops,454		.desc		= "Chelsio N210 1x10GBaseX NIC",455	},456 457	{458		.board		= CHBT_BOARD_CHT210,459		.port_number	= 1,460		.caps		= SUPPORTED_10000baseT_Full,461		.chip_term	= CHBT_TERM_T2,462		.chip_mac	= CHBT_MAC_PM3393,463		.chip_phy	= CHBT_PHY_88X2010,464		.clock_core	= 125000000,465		.clock_mc3	= 133000000,466		.clock_mc4	= 125000000,467		.espi_nports	= 1,468		.clock_elmer0	= 44,469		.mdio_mdien	= 0,470		.mdio_mdiinv	= 0,471		.mdio_mdc	= 1,472		.mdio_phybaseaddr = 0,473		.gmac		= &t1_pm3393_ops,474		.gphy		= &t1_mv88x201x_ops,475		.mdio_ops	= &mi1_mdio_ext_ops,476		.desc		= "Chelsio T210 1x10GBaseX TOE",477	},478 479	{480		.board		= CHBT_BOARD_CHT210,481		.port_number	= 1,482		.caps		= SUPPORTED_10000baseT_Full,483		.chip_term	= CHBT_TERM_T2,484		.chip_mac	= CHBT_MAC_PM3393,485		.chip_phy	= CHBT_PHY_MY3126,486		.clock_core	= 125000000,487		.clock_mc3	= 133000000,488		.clock_mc4	= 125000000,489		.espi_nports	= 1,490		.clock_elmer0	= 44,491		.mdio_mdien	= 1,492		.mdio_mdiinv	= 1,493		.mdio_mdc	= 1,494		.mdio_phybaseaddr = 1,495		.gmac		= &t1_pm3393_ops,496		.gphy		= &t1_my3126_ops,497		.mdio_ops	= &mi1_mdio_ext_ops,498		.desc		= "Chelsio T210 1x10GBase-CX4 TOE",499	},500 501#ifdef CONFIG_CHELSIO_T1_1G502	{503		.board		= CHBT_BOARD_CHN204,504		.port_number	= 4,505		.caps		= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full506				| SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full507				| SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |508				  SUPPORTED_PAUSE | SUPPORTED_TP,509		.chip_term	= CHBT_TERM_T2,510		.chip_mac	= CHBT_MAC_VSC7321,511		.chip_phy	= CHBT_PHY_88E1111,512		.clock_core	= 100000000,513		.espi_nports	= 4,514		.clock_elmer0	= 44,515		.mdio_mdien	= 0,516		.mdio_mdiinv	= 0,517		.mdio_mdc	= 0,518		.mdio_phybaseaddr = 4,519		.gmac		= &t1_vsc7326_ops,520		.gphy		= &t1_mv88e1xxx_ops,521		.mdio_ops	= &mi1_mdio_ops,522		.desc		= "Chelsio N204 4x100/1000BaseT NIC",523	},524#endif525 526};527 528const struct pci_device_id t1_pci_tbl[] = {529	CH_DEVICE(8, 0, CH_BRD_T110_1CU),530	CH_DEVICE(8, 1, CH_BRD_T110_1CU),531	CH_DEVICE(7, 0, CH_BRD_N110_1F),532	CH_DEVICE(10, 1, CH_BRD_N210_1F),533	CH_DEVICE(11, 1, CH_BRD_T210_1F),534	CH_DEVICE(14, 1, CH_BRD_T210_1CU),535	CH_DEVICE(16, 1, CH_BRD_N204_4CU),536	{ 0 }537};538 539MODULE_DEVICE_TABLE(pci, t1_pci_tbl);540 541/*542 * Return the board_info structure with a given index.  Out-of-range indices543 * return NULL.544 */545const struct board_info *t1_get_board_info(unsigned int board_id)546{547	return board_id < ARRAY_SIZE(t1_board) ? &t1_board[board_id] : NULL;548}549 550struct chelsio_vpd_t {551	u32 format_version;552	u8 serial_number[16];553	u8 mac_base_address[6];554	u8 pad[2];           /* make multiple-of-4 size requirement explicit */555};556 557#define EEPROMSIZE        (8 * 1024)558#define EEPROM_MAX_POLL   4559 560/*561 * Read SEEPROM. A zero is written to the flag register when the address is562 * written to the Control register. The hardware device will set the flag to a563 * one when 4B have been transferred to the Data register.564 */565int t1_seeprom_read(adapter_t *adapter, u32 addr, __le32 *data)566{567	int i = EEPROM_MAX_POLL;568	u16 val;569	u32 v;570 571	if (addr >= EEPROMSIZE || (addr & 3))572		return -EINVAL;573 574	pci_write_config_word(adapter->pdev, A_PCICFG_VPD_ADDR, (u16)addr);575	do {576		udelay(50);577		pci_read_config_word(adapter->pdev, A_PCICFG_VPD_ADDR, &val);578	} while (!(val & F_VPD_OP_FLAG) && --i);579 580	if (!(val & F_VPD_OP_FLAG)) {581		pr_err("%s: reading EEPROM address 0x%x failed\n",582		       adapter->name, addr);583		return -EIO;584	}585	pci_read_config_dword(adapter->pdev, A_PCICFG_VPD_DATA, &v);586	*data = cpu_to_le32(v);587	return 0;588}589 590static int t1_eeprom_vpd_get(adapter_t *adapter, struct chelsio_vpd_t *vpd)591{592	int addr, ret = 0;593 594	for (addr = 0; !ret && addr < sizeof(*vpd); addr += sizeof(u32))595		ret = t1_seeprom_read(adapter, addr,596				      (__le32 *)((u8 *)vpd + addr));597 598	return ret;599}600 601/*602 * Read a port's MAC address from the VPD ROM.603 */604static int vpd_macaddress_get(adapter_t *adapter, int index, u8 mac_addr[])605{606	struct chelsio_vpd_t vpd;607 608	if (t1_eeprom_vpd_get(adapter, &vpd))609		return 1;610	memcpy(mac_addr, vpd.mac_base_address, 5);611	mac_addr[5] = vpd.mac_base_address[5] + index;612	return 0;613}614 615/*616 * Set up the MAC/PHY according to the requested link settings.617 *618 * If the PHY can auto-negotiate first decide what to advertise, then619 * enable/disable auto-negotiation as desired and reset.620 *621 * If the PHY does not auto-negotiate we just reset it.622 *623 * If auto-negotiation is off set the MAC to the proper speed/duplex/FC,624 * otherwise do it later based on the outcome of auto-negotiation.625 */626int t1_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc)627{628	unsigned int fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);629 630	if (lc->supported & SUPPORTED_Autoneg) {631		lc->advertising &= ~(ADVERTISED_ASYM_PAUSE | ADVERTISED_PAUSE);632		if (fc) {633			if (fc == ((PAUSE_RX | PAUSE_TX) &634				   (mac->adapter->params.nports < 2)))635				lc->advertising |= ADVERTISED_PAUSE;636			else {637				lc->advertising |= ADVERTISED_ASYM_PAUSE;638				if (fc == PAUSE_RX)639					lc->advertising |= ADVERTISED_PAUSE;640			}641		}642		phy->ops->advertise(phy, lc->advertising);643 644		if (lc->autoneg == AUTONEG_DISABLE) {645			lc->speed = lc->requested_speed;646			lc->duplex = lc->requested_duplex;647			lc->fc = (unsigned char)fc;648			mac->ops->set_speed_duplex_fc(mac, lc->speed,649						      lc->duplex, fc);650			/* Also disables autoneg */651			phy->state = PHY_AUTONEG_RDY;652			phy->ops->set_speed_duplex(phy, lc->speed, lc->duplex);653			phy->ops->reset(phy, 0);654		} else {655			phy->state = PHY_AUTONEG_EN;656			phy->ops->autoneg_enable(phy); /* also resets PHY */657		}658	} else {659		phy->state = PHY_AUTONEG_RDY;660		mac->ops->set_speed_duplex_fc(mac, -1, -1, fc);661		lc->fc = (unsigned char)fc;662		phy->ops->reset(phy, 0);663	}664	return 0;665}666 667/*668 * External interrupt handler for boards using elmer0.669 */670int t1_elmer0_ext_intr_handler(adapter_t *adapter)671{672	struct cphy *phy;673	int phy_cause;674	u32 cause;675 676	t1_tpi_read(adapter, A_ELMER0_INT_CAUSE, &cause);677 678	switch (board_info(adapter)->board) {679#ifdef CONFIG_CHELSIO_T1_1G680	case CHBT_BOARD_CHT204:681	case CHBT_BOARD_CHT204E:682	case CHBT_BOARD_CHN204:683	case CHBT_BOARD_CHT204V: {684		int i, port_bit;685		for_each_port(adapter, i) {686			port_bit = i + 1;687			if (!(cause & (1 << port_bit)))688				continue;689 690			phy = adapter->port[i].phy;691			phy_cause = phy->ops->interrupt_handler(phy);692			if (phy_cause & cphy_cause_link_change)693				t1_link_changed(adapter, i);694		}695		break;696	}697	case CHBT_BOARD_CHT101:698		if (cause & ELMER0_GP_BIT1) { /* Marvell 88E1111 interrupt */699			phy = adapter->port[0].phy;700			phy_cause = phy->ops->interrupt_handler(phy);701			if (phy_cause & cphy_cause_link_change)702				t1_link_changed(adapter, 0);703		}704		break;705	case CHBT_BOARD_7500: {706		int p;707		/*708		 * Elmer0's interrupt cause isn't useful here because there is709		 * only one bit that can be set for all 4 ports.  This means710		 * we are forced to check every PHY's interrupt status711		 * register to see who initiated the interrupt.712		 */713		for_each_port(adapter, p) {714			phy = adapter->port[p].phy;715			phy_cause = phy->ops->interrupt_handler(phy);716			if (phy_cause & cphy_cause_link_change)717			    t1_link_changed(adapter, p);718		}719		break;720	}721#endif722	case CHBT_BOARD_CHT210:723	case CHBT_BOARD_N210:724	case CHBT_BOARD_N110:725		if (cause & ELMER0_GP_BIT6) { /* Marvell 88x2010 interrupt */726			phy = adapter->port[0].phy;727			phy_cause = phy->ops->interrupt_handler(phy);728			if (phy_cause & cphy_cause_link_change)729				t1_link_changed(adapter, 0);730		}731		break;732	case CHBT_BOARD_8000:733	case CHBT_BOARD_CHT110:734		if (netif_msg_intr(adapter))735			dev_dbg(&adapter->pdev->dev,736				"External interrupt cause 0x%x\n", cause);737		if (cause & ELMER0_GP_BIT1) {        /* PMC3393 INTB */738			struct cmac *mac = adapter->port[0].mac;739 740			mac->ops->interrupt_handler(mac);741		}742		if (cause & ELMER0_GP_BIT5) {        /* XPAK MOD_DETECT */743			u32 mod_detect;744 745			t1_tpi_read(adapter,746					A_ELMER0_GPI_STAT, &mod_detect);747			if (netif_msg_link(adapter))748				dev_info(&adapter->pdev->dev, "XPAK %s\n",749					 mod_detect ? "removed" : "inserted");750		}751		break;752	}753	t1_tpi_write(adapter, A_ELMER0_INT_CAUSE, cause);754	return 0;755}756 757/* Enables all interrupts. */758void t1_interrupts_enable(adapter_t *adapter)759{760	unsigned int i;761 762	adapter->slow_intr_mask = F_PL_INTR_SGE_ERR | F_PL_INTR_TP;763 764	t1_sge_intr_enable(adapter->sge);765	t1_tp_intr_enable(adapter->tp);766	if (adapter->espi) {767		adapter->slow_intr_mask |= F_PL_INTR_ESPI;768		t1_espi_intr_enable(adapter->espi);769	}770 771	/* Enable MAC/PHY interrupts for each port. */772	for_each_port(adapter, i) {773		adapter->port[i].mac->ops->interrupt_enable(adapter->port[i].mac);774		adapter->port[i].phy->ops->interrupt_enable(adapter->port[i].phy);775	}776 777	/* Enable PCIX & external chip interrupts on ASIC boards. */778	if (t1_is_asic(adapter)) {779		u32 pl_intr = readl(adapter->regs + A_PL_ENABLE);780 781		/* PCI-X interrupts */782		pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_ENABLE,783				       0xffffffff);784 785		adapter->slow_intr_mask |= F_PL_INTR_EXT | F_PL_INTR_PCIX;786		pl_intr |= F_PL_INTR_EXT | F_PL_INTR_PCIX;787		writel(pl_intr, adapter->regs + A_PL_ENABLE);788	}789}790 791/* Disables all interrupts. */792void t1_interrupts_disable(adapter_t* adapter)793{794	unsigned int i;795 796	t1_sge_intr_disable(adapter->sge);797	t1_tp_intr_disable(adapter->tp);798	if (adapter->espi)799		t1_espi_intr_disable(adapter->espi);800 801	/* Disable MAC/PHY interrupts for each port. */802	for_each_port(adapter, i) {803		adapter->port[i].mac->ops->interrupt_disable(adapter->port[i].mac);804		adapter->port[i].phy->ops->interrupt_disable(adapter->port[i].phy);805	}806 807	/* Disable PCIX & external chip interrupts. */808	if (t1_is_asic(adapter))809		writel(0, adapter->regs + A_PL_ENABLE);810 811	/* PCI-X interrupts */812	pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_ENABLE, 0);813 814	adapter->slow_intr_mask = 0;815}816 817/* Clears all interrupts */818void t1_interrupts_clear(adapter_t* adapter)819{820	unsigned int i;821 822	t1_sge_intr_clear(adapter->sge);823	t1_tp_intr_clear(adapter->tp);824	if (adapter->espi)825		t1_espi_intr_clear(adapter->espi);826 827	/* Clear MAC/PHY interrupts for each port. */828	for_each_port(adapter, i) {829		adapter->port[i].mac->ops->interrupt_clear(adapter->port[i].mac);830		adapter->port[i].phy->ops->interrupt_clear(adapter->port[i].phy);831	}832 833	/* Enable interrupts for external devices. */834	if (t1_is_asic(adapter)) {835		u32 pl_intr = readl(adapter->regs + A_PL_CAUSE);836 837		writel(pl_intr | F_PL_INTR_EXT | F_PL_INTR_PCIX,838		       adapter->regs + A_PL_CAUSE);839	}840 841	/* PCI-X interrupts */842	pci_write_config_dword(adapter->pdev, A_PCICFG_INTR_CAUSE, 0xffffffff);843}844 845/*846 * Slow path interrupt handler for ASICs.847 */848static irqreturn_t asic_slow_intr(adapter_t *adapter)849{850	u32 cause = readl(adapter->regs + A_PL_CAUSE);851	irqreturn_t ret = IRQ_HANDLED;852 853	cause &= adapter->slow_intr_mask;854	if (!cause)855		return IRQ_NONE;856	if (cause & F_PL_INTR_SGE_ERR) {857		if (t1_sge_intr_error_handler(adapter->sge))858			ret = IRQ_WAKE_THREAD;859	}860	if (cause & F_PL_INTR_TP)861		t1_tp_intr_handler(adapter->tp);862	if (cause & F_PL_INTR_ESPI)863		t1_espi_intr_handler(adapter->espi);864	if (cause & F_PL_INTR_PCIX) {865		if (t1_pci_intr_handler(adapter))866			ret = IRQ_WAKE_THREAD;867	}868	if (cause & F_PL_INTR_EXT) {869		/* Wake the threaded interrupt to handle external interrupts as870		 * we require a process context. We disable EXT interrupts in871		 * the interim and let the thread reenable them when it's done.872		 */873		adapter->pending_thread_intr |= F_PL_INTR_EXT;874		adapter->slow_intr_mask &= ~F_PL_INTR_EXT;875		writel(adapter->slow_intr_mask | F_PL_INTR_SGE_DATA,876		       adapter->regs + A_PL_ENABLE);877		ret = IRQ_WAKE_THREAD;878	}879 880	/* Clear the interrupts just processed. */881	writel(cause, adapter->regs + A_PL_CAUSE);882	readl(adapter->regs + A_PL_CAUSE); /* flush writes */883	return ret;884}885 886irqreturn_t t1_slow_intr_handler(adapter_t *adapter)887{888#ifdef CONFIG_CHELSIO_T1_1G889	if (!t1_is_asic(adapter))890		return fpga_slow_intr(adapter);891#endif892	return asic_slow_intr(adapter);893}894 895/* Power sequencing is a work-around for Intel's XPAKs. */896static void power_sequence_xpak(adapter_t* adapter)897{898	u32 mod_detect;899	u32 gpo;900 901	/* Check for XPAK */902	t1_tpi_read(adapter, A_ELMER0_GPI_STAT, &mod_detect);903	if (!(ELMER0_GP_BIT5 & mod_detect)) {904		/* XPAK is present */905		t1_tpi_read(adapter, A_ELMER0_GPO, &gpo);906		gpo |= ELMER0_GP_BIT18;907		t1_tpi_write(adapter, A_ELMER0_GPO, gpo);908	}909}910 911int t1_get_board_rev(adapter_t *adapter, const struct board_info *bi,912		     struct adapter_params *p)913{914	p->chip_version = bi->chip_term;915	p->is_asic = (p->chip_version != CHBT_TERM_FPGA);916	if (p->chip_version == CHBT_TERM_T1 ||917	    p->chip_version == CHBT_TERM_T2 ||918	    p->chip_version == CHBT_TERM_FPGA) {919		u32 val = readl(adapter->regs + A_TP_PC_CONFIG);920 921		val = G_TP_PC_REV(val);922		if (val == 2)923			p->chip_revision = TERM_T1B;924		else if (val == 3)925			p->chip_revision = TERM_T2;926		else927			return -1;928	} else929		return -1;930	return 0;931}932 933/*934 * Enable board components other than the Chelsio chip, such as external MAC935 * and PHY.936 */937static int board_init(adapter_t *adapter, const struct board_info *bi)938{939	switch (bi->board) {940	case CHBT_BOARD_8000:941	case CHBT_BOARD_N110:942	case CHBT_BOARD_N210:943	case CHBT_BOARD_CHT210:944		t1_tpi_par(adapter, 0xf);945		t1_tpi_write(adapter, A_ELMER0_GPO, 0x800);946		break;947	case CHBT_BOARD_CHT110:948		t1_tpi_par(adapter, 0xf);949		t1_tpi_write(adapter, A_ELMER0_GPO, 0x1800);950 951		/* TBD XXX Might not need.  This fixes a problem952		 *         described in the Intel SR XPAK errata.953		 */954		power_sequence_xpak(adapter);955		break;956#ifdef CONFIG_CHELSIO_T1_1G957	case CHBT_BOARD_CHT204E:958		/* add config space write here */959	case CHBT_BOARD_CHT204:960	case CHBT_BOARD_CHT204V:961	case CHBT_BOARD_CHN204:962		t1_tpi_par(adapter, 0xf);963		t1_tpi_write(adapter, A_ELMER0_GPO, 0x804);964		break;965	case CHBT_BOARD_CHT101:966	case CHBT_BOARD_7500:967		t1_tpi_par(adapter, 0xf);968		t1_tpi_write(adapter, A_ELMER0_GPO, 0x1804);969		break;970#endif971	}972	return 0;973}974 975/*976 * Initialize and configure the Terminator HW modules.  Note that external977 * MAC and PHYs are initialized separately.978 */979int t1_init_hw_modules(adapter_t *adapter)980{981	int err = -EIO;982	const struct board_info *bi = board_info(adapter);983 984	if (!bi->clock_mc4) {985		u32 val = readl(adapter->regs + A_MC4_CFG);986 987		writel(val | F_READY | F_MC4_SLOW, adapter->regs + A_MC4_CFG);988		writel(F_M_BUS_ENABLE | F_TCAM_RESET,989		       adapter->regs + A_MC5_CONFIG);990	}991 992	if (adapter->espi && t1_espi_init(adapter->espi, bi->chip_mac,993					  bi->espi_nports))994		goto out_err;995 996	if (t1_tp_reset(adapter->tp, &adapter->params.tp, bi->clock_core))997		goto out_err;998 999	err = t1_sge_configure(adapter->sge, &adapter->params.sge);1000	if (err)1001		goto out_err;1002 1003	err = 0;1004out_err:1005	return err;1006}1007 1008/*1009 * Determine a card's PCI mode.1010 */1011static void get_pci_mode(adapter_t *adapter, struct chelsio_pci_params *p)1012{1013	static const unsigned short speed_map[] = { 33, 66, 100, 133 };1014	u32 pci_mode;1015 1016	pci_read_config_dword(adapter->pdev, A_PCICFG_MODE, &pci_mode);1017	p->speed = speed_map[G_PCI_MODE_CLK(pci_mode)];1018	p->width = (pci_mode & F_PCI_MODE_64BIT) ? 64 : 32;1019	p->is_pcix = (pci_mode & F_PCI_MODE_PCIX) != 0;1020}1021 1022/*1023 * Release the structures holding the SW per-Terminator-HW-module state.1024 */1025void t1_free_sw_modules(adapter_t *adapter)1026{1027	unsigned int i;1028 1029	for_each_port(adapter, i) {1030		struct cmac *mac = adapter->port[i].mac;1031		struct cphy *phy = adapter->port[i].phy;1032 1033		if (mac)1034			mac->ops->destroy(mac);1035		if (phy)1036			phy->ops->destroy(phy);1037	}1038 1039	if (adapter->sge)1040		t1_sge_destroy(adapter->sge);1041	if (adapter->tp)1042		t1_tp_destroy(adapter->tp);1043	if (adapter->espi)1044		t1_espi_destroy(adapter->espi);1045}1046 1047static void init_link_config(struct link_config *lc,1048			     const struct board_info *bi)1049{1050	lc->supported = bi->caps;1051	lc->requested_speed = lc->speed = SPEED_INVALID;1052	lc->requested_duplex = lc->duplex = DUPLEX_INVALID;1053	lc->requested_fc = lc->fc = PAUSE_RX | PAUSE_TX;1054	if (lc->supported & SUPPORTED_Autoneg) {1055		lc->advertising = lc->supported;1056		lc->autoneg = AUTONEG_ENABLE;1057		lc->requested_fc |= PAUSE_AUTONEG;1058	} else {1059		lc->advertising = 0;1060		lc->autoneg = AUTONEG_DISABLE;1061	}1062}1063 1064/*1065 * Allocate and initialize the data structures that hold the SW state of1066 * the Terminator HW modules.1067 */1068int t1_init_sw_modules(adapter_t *adapter, const struct board_info *bi)1069{1070	unsigned int i;1071 1072	adapter->params.brd_info = bi;1073	adapter->params.nports = bi->port_number;1074	adapter->params.stats_update_period = bi->gmac->stats_update_period;1075 1076	adapter->sge = t1_sge_create(adapter, &adapter->params.sge);1077	if (!adapter->sge) {1078		pr_err("%s: SGE initialization failed\n",1079		       adapter->name);1080		goto error;1081	}1082 1083	if (bi->espi_nports && !(adapter->espi = t1_espi_create(adapter))) {1084		pr_err("%s: ESPI initialization failed\n",1085		       adapter->name);1086		goto error;1087	}1088 1089	adapter->tp = t1_tp_create(adapter, &adapter->params.tp);1090	if (!adapter->tp) {1091		pr_err("%s: TP initialization failed\n",1092		       adapter->name);1093		goto error;1094	}1095 1096	board_init(adapter, bi);1097	bi->mdio_ops->init(adapter, bi);1098	if (bi->gphy->reset)1099		bi->gphy->reset(adapter);1100	if (bi->gmac->reset)1101		bi->gmac->reset(adapter);1102 1103	for_each_port(adapter, i) {1104		u8 hw_addr[6];1105		struct cmac *mac;1106		int phy_addr = bi->mdio_phybaseaddr + i;1107 1108		adapter->port[i].phy = bi->gphy->create(adapter->port[i].dev,1109							phy_addr, bi->mdio_ops);1110		if (!adapter->port[i].phy) {1111			pr_err("%s: PHY %d initialization failed\n",1112			       adapter->name, i);1113			goto error;1114		}1115 1116		adapter->port[i].mac = mac = bi->gmac->create(adapter, i);1117		if (!mac) {1118			pr_err("%s: MAC %d initialization failed\n",1119			       adapter->name, i);1120			goto error;1121		}1122 1123		/*1124		 * Get the port's MAC addresses either from the EEPROM if one1125		 * exists or the one hardcoded in the MAC.1126		 */1127		if (!t1_is_asic(adapter) || bi->chip_mac == CHBT_MAC_DUMMY)1128			mac->ops->macaddress_get(mac, hw_addr);1129		else if (vpd_macaddress_get(adapter, i, hw_addr)) {1130			pr_err("%s: could not read MAC address from VPD ROM\n",1131			       adapter->port[i].dev->name);1132			goto error;1133		}1134		eth_hw_addr_set(adapter->port[i].dev, hw_addr);1135		init_link_config(&adapter->port[i].link_config, bi);1136	}1137 1138	get_pci_mode(adapter, &adapter->params.pci);1139	t1_interrupts_clear(adapter);1140	return 0;1141 1142error:1143	t1_free_sw_modules(adapter);1144	return -1;1145}1146