xref: /linux/drivers/scsi/mvsas/mv_94xx.c (revision b77e0ce62d63a761ffb7f7245a215a49f5921c2f)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Marvell 88SE94xx hardware specific
4  *
5  * Copyright 2007 Red Hat, Inc.
6  * Copyright 2008 Marvell. <kewei@marvell.com>
7  * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
8 */
9 
10 #include "mv_sas.h"
11 #include "mv_94xx.h"
12 #include "mv_chips.h"
13 
14 static void mvs_94xx_detect_porttype(struct mvs_info *mvi, int i)
15 {
16 	u32 reg;
17 	struct mvs_phy *phy = &mvi->phy[i];
18 	u32 phy_status;
19 
20 	mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE3);
21 	reg = mvs_read_port_vsr_data(mvi, i);
22 	phy_status = ((reg & 0x3f0000) >> 16) & 0xff;
23 	phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
24 	switch (phy_status) {
25 	case 0x10:
26 		phy->phy_type |= PORT_TYPE_SAS;
27 		break;
28 	case 0x1d:
29 	default:
30 		phy->phy_type |= PORT_TYPE_SATA;
31 		break;
32 	}
33 }
34 
35 static void set_phy_tuning(struct mvs_info *mvi, int phy_id,
36 			   struct phy_tuning phy_tuning)
37 {
38 	u32 tmp, setting_0 = 0, setting_1 = 0;
39 	u8 i;
40 
41 	/* Remap information for B0 chip:
42 	*
43 	* R0Ch -> R118h[15:0] (Adapted DFE F3 - F5 coefficient)
44 	* R0Dh -> R118h[31:16] (Generation 1 Setting 0)
45 	* R0Eh -> R11Ch[15:0]  (Generation 1 Setting 1)
46 	* R0Fh -> R11Ch[31:16] (Generation 2 Setting 0)
47 	* R10h -> R120h[15:0]  (Generation 2 Setting 1)
48 	* R11h -> R120h[31:16] (Generation 3 Setting 0)
49 	* R12h -> R124h[15:0]  (Generation 3 Setting 1)
50 	* R13h -> R124h[31:16] (Generation 4 Setting 0 (Reserved))
51 	*/
52 
53 	/* A0 has a different set of registers */
54 	if (mvi->pdev->revision == VANIR_A0_REV)
55 		return;
56 
57 	for (i = 0; i < 3; i++) {
58 		/* loop 3 times, set Gen 1, Gen 2, Gen 3 */
59 		switch (i) {
60 		case 0:
61 			setting_0 = GENERATION_1_SETTING;
62 			setting_1 = GENERATION_1_2_SETTING;
63 			break;
64 		case 1:
65 			setting_0 = GENERATION_1_2_SETTING;
66 			setting_1 = GENERATION_2_3_SETTING;
67 			break;
68 		case 2:
69 			setting_0 = GENERATION_2_3_SETTING;
70 			setting_1 = GENERATION_3_4_SETTING;
71 			break;
72 		}
73 
74 		/* Set:
75 		*
76 		* Transmitter Emphasis Enable
77 		* Transmitter Emphasis Amplitude
78 		* Transmitter Amplitude
79 		*/
80 		mvs_write_port_vsr_addr(mvi, phy_id, setting_0);
81 		tmp = mvs_read_port_vsr_data(mvi, phy_id);
82 		tmp &= ~(0xFBE << 16);
83 		tmp |= (((phy_tuning.trans_emp_en << 11) |
84 			(phy_tuning.trans_emp_amp << 7) |
85 			(phy_tuning.trans_amp << 1)) << 16);
86 		mvs_write_port_vsr_data(mvi, phy_id, tmp);
87 
88 		/* Set Transmitter Amplitude Adjust */
89 		mvs_write_port_vsr_addr(mvi, phy_id, setting_1);
90 		tmp = mvs_read_port_vsr_data(mvi, phy_id);
91 		tmp &= ~(0xC000);
92 		tmp |= (phy_tuning.trans_amp_adj << 14);
93 		mvs_write_port_vsr_data(mvi, phy_id, tmp);
94 	}
95 }
96 
97 static void set_phy_ffe_tuning(struct mvs_info *mvi, int phy_id,
98 			       struct ffe_control ffe)
99 {
100 	u32 tmp;
101 
102 	/* Don't run this if A0/B0 */
103 	if ((mvi->pdev->revision == VANIR_A0_REV)
104 		|| (mvi->pdev->revision == VANIR_B0_REV))
105 		return;
106 
107 	/* FFE Resistor and Capacitor */
108 	/* R10Ch DFE Resolution Control/Squelch and FFE Setting
109 	 *
110 	 * FFE_FORCE            [7]
111 	 * FFE_RES_SEL          [6:4]
112 	 * FFE_CAP_SEL          [3:0]
113 	 */
114 	mvs_write_port_vsr_addr(mvi, phy_id, VSR_PHY_FFE_CONTROL);
115 	tmp = mvs_read_port_vsr_data(mvi, phy_id);
116 	tmp &= ~0xFF;
117 
118 	/* Read from HBA_Info_Page */
119 	tmp |= ((0x1 << 7) |
120 		(ffe.ffe_rss_sel << 4) |
121 		(ffe.ffe_cap_sel << 0));
122 
123 	mvs_write_port_vsr_data(mvi, phy_id, tmp);
124 
125 	/* R064h PHY Mode Register 1
126 	 *
127 	 * DFE_DIS		18
128 	 */
129 	mvs_write_port_vsr_addr(mvi, phy_id, VSR_REF_CLOCK_CRTL);
130 	tmp = mvs_read_port_vsr_data(mvi, phy_id);
131 	tmp &= ~0x40001;
132 	/* Hard coding */
133 	/* No defines in HBA_Info_Page */
134 	tmp |= (0 << 18);
135 	mvs_write_port_vsr_data(mvi, phy_id, tmp);
136 
137 	/* R110h DFE F0-F1 Coefficient Control/DFE Update Control
138 	 *
139 	 * DFE_UPDATE_EN        [11:6]
140 	 * DFE_FX_FORCE         [5:0]
141 	 */
142 	mvs_write_port_vsr_addr(mvi, phy_id, VSR_PHY_DFE_UPDATE_CRTL);
143 	tmp = mvs_read_port_vsr_data(mvi, phy_id);
144 	tmp &= ~0xFFF;
145 	/* Hard coding */
146 	/* No defines in HBA_Info_Page */
147 	tmp |= ((0x3F << 6) | (0x0 << 0));
148 	mvs_write_port_vsr_data(mvi, phy_id, tmp);
149 
150 	/* R1A0h Interface and Digital Reference Clock Control/Reserved_50h
151 	 *
152 	 * FFE_TRAIN_EN         3
153 	 */
154 	mvs_write_port_vsr_addr(mvi, phy_id, VSR_REF_CLOCK_CRTL);
155 	tmp = mvs_read_port_vsr_data(mvi, phy_id);
156 	tmp &= ~0x8;
157 	/* Hard coding */
158 	/* No defines in HBA_Info_Page */
159 	tmp |= (0 << 3);
160 	mvs_write_port_vsr_data(mvi, phy_id, tmp);
161 }
162 
163 /*Notice: this function must be called when phy is disabled*/
164 static void set_phy_rate(struct mvs_info *mvi, int phy_id, u8 rate)
165 {
166 	union reg_phy_cfg phy_cfg, phy_cfg_tmp;
167 	mvs_write_port_vsr_addr(mvi, phy_id, VSR_PHY_MODE2);
168 	phy_cfg_tmp.v = mvs_read_port_vsr_data(mvi, phy_id);
169 	phy_cfg.v = 0;
170 	phy_cfg.u.disable_phy = phy_cfg_tmp.u.disable_phy;
171 	phy_cfg.u.sas_support = 1;
172 	phy_cfg.u.sata_support = 1;
173 	phy_cfg.u.sata_host_mode = 1;
174 
175 	switch (rate) {
176 	case 0x0:
177 		/* support 1.5 Gbps */
178 		phy_cfg.u.speed_support = 1;
179 		phy_cfg.u.snw_3_support = 0;
180 		phy_cfg.u.tx_lnk_parity = 1;
181 		phy_cfg.u.tx_spt_phs_lnk_rate = 0x30;
182 		break;
183 	case 0x1:
184 
185 		/* support 1.5, 3.0 Gbps */
186 		phy_cfg.u.speed_support = 3;
187 		phy_cfg.u.tx_spt_phs_lnk_rate = 0x3c;
188 		phy_cfg.u.tx_lgcl_lnk_rate = 0x08;
189 		break;
190 	case 0x2:
191 	default:
192 		/* support 1.5, 3.0, 6.0 Gbps */
193 		phy_cfg.u.speed_support = 7;
194 		phy_cfg.u.snw_3_support = 1;
195 		phy_cfg.u.tx_lnk_parity = 1;
196 		phy_cfg.u.tx_spt_phs_lnk_rate = 0x3f;
197 		phy_cfg.u.tx_lgcl_lnk_rate = 0x09;
198 		break;
199 	}
200 	mvs_write_port_vsr_data(mvi, phy_id, phy_cfg.v);
201 }
202 
203 static void mvs_94xx_config_reg_from_hba(struct mvs_info *mvi, int phy_id)
204 {
205 	u32 temp;
206 	temp = (u32)(*(u32 *)&mvi->hba_info_param.phy_tuning[phy_id]);
207 	if (temp == 0xFFFFFFFFL) {
208 		mvi->hba_info_param.phy_tuning[phy_id].trans_emp_amp = 0x6;
209 		mvi->hba_info_param.phy_tuning[phy_id].trans_amp = 0x1A;
210 		mvi->hba_info_param.phy_tuning[phy_id].trans_amp_adj = 0x3;
211 	}
212 
213 	temp = (u8)(*(u8 *)&mvi->hba_info_param.ffe_ctl[phy_id]);
214 	if (temp == 0xFFL) {
215 		switch (mvi->pdev->revision) {
216 		case VANIR_A0_REV:
217 		case VANIR_B0_REV:
218 			mvi->hba_info_param.ffe_ctl[phy_id].ffe_rss_sel = 0x7;
219 			mvi->hba_info_param.ffe_ctl[phy_id].ffe_cap_sel = 0x7;
220 			break;
221 		case VANIR_C0_REV:
222 		case VANIR_C1_REV:
223 		case VANIR_C2_REV:
224 		default:
225 			mvi->hba_info_param.ffe_ctl[phy_id].ffe_rss_sel = 0x7;
226 			mvi->hba_info_param.ffe_ctl[phy_id].ffe_cap_sel = 0xC;
227 			break;
228 		}
229 	}
230 
231 	temp = (u8)(*(u8 *)&mvi->hba_info_param.phy_rate[phy_id]);
232 	if (temp == 0xFFL)
233 		/*set default phy_rate = 6Gbps*/
234 		mvi->hba_info_param.phy_rate[phy_id] = 0x2;
235 
236 	set_phy_tuning(mvi, phy_id,
237 		mvi->hba_info_param.phy_tuning[phy_id]);
238 	set_phy_ffe_tuning(mvi, phy_id,
239 		mvi->hba_info_param.ffe_ctl[phy_id]);
240 	set_phy_rate(mvi, phy_id,
241 		mvi->hba_info_param.phy_rate[phy_id]);
242 }
243 
244 static void mvs_94xx_enable_xmt(struct mvs_info *mvi, int phy_id)
245 {
246 	void __iomem *regs = mvi->regs;
247 	u32 tmp;
248 
249 	tmp = mr32(MVS_PCS);
250 	tmp |= 1 << (phy_id + PCS_EN_PORT_XMT_SHIFT2);
251 	mw32(MVS_PCS, tmp);
252 }
253 
254 static void mvs_94xx_phy_reset(struct mvs_info *mvi, u32 phy_id, int hard)
255 {
256 	u32 tmp;
257 	u32 delay = 5000;
258 	if (hard == MVS_PHY_TUNE) {
259 		mvs_write_port_cfg_addr(mvi, phy_id, PHYR_SATA_CTL);
260 		tmp = mvs_read_port_cfg_data(mvi, phy_id);
261 		mvs_write_port_cfg_data(mvi, phy_id, tmp|0x20000000);
262 		mvs_write_port_cfg_data(mvi, phy_id, tmp|0x100000);
263 		return;
264 	}
265 	tmp = mvs_read_port_irq_stat(mvi, phy_id);
266 	tmp &= ~PHYEV_RDY_CH;
267 	mvs_write_port_irq_stat(mvi, phy_id, tmp);
268 	if (hard) {
269 		tmp = mvs_read_phy_ctl(mvi, phy_id);
270 		tmp |= PHY_RST_HARD;
271 		mvs_write_phy_ctl(mvi, phy_id, tmp);
272 		do {
273 			tmp = mvs_read_phy_ctl(mvi, phy_id);
274 			udelay(10);
275 			delay--;
276 		} while ((tmp & PHY_RST_HARD) && delay);
277 		if (!delay)
278 			mv_dprintk("phy hard reset failed.\n");
279 	} else {
280 		tmp = mvs_read_phy_ctl(mvi, phy_id);
281 		tmp |= PHY_RST;
282 		mvs_write_phy_ctl(mvi, phy_id, tmp);
283 	}
284 }
285 
286 static void mvs_94xx_phy_disable(struct mvs_info *mvi, u32 phy_id)
287 {
288 	u32 tmp;
289 	mvs_write_port_vsr_addr(mvi, phy_id, VSR_PHY_MODE2);
290 	tmp = mvs_read_port_vsr_data(mvi, phy_id);
291 	mvs_write_port_vsr_data(mvi, phy_id, tmp | 0x00800000);
292 }
293 
294 static void mvs_94xx_phy_enable(struct mvs_info *mvi, u32 phy_id)
295 {
296 	u32 tmp;
297 	u8 revision = 0;
298 
299 	revision = mvi->pdev->revision;
300 	if (revision == VANIR_A0_REV) {
301 		mvs_write_port_vsr_addr(mvi, phy_id, CMD_HOST_RD_DATA);
302 		mvs_write_port_vsr_data(mvi, phy_id, 0x8300ffc1);
303 	}
304 	if (revision == VANIR_B0_REV) {
305 		mvs_write_port_vsr_addr(mvi, phy_id, CMD_APP_MEM_CTL);
306 		mvs_write_port_vsr_data(mvi, phy_id, 0x08001006);
307 		mvs_write_port_vsr_addr(mvi, phy_id, CMD_HOST_RD_DATA);
308 		mvs_write_port_vsr_data(mvi, phy_id, 0x0000705f);
309 	}
310 
311 	mvs_write_port_vsr_addr(mvi, phy_id, VSR_PHY_MODE2);
312 	tmp = mvs_read_port_vsr_data(mvi, phy_id);
313 	tmp |= bit(0);
314 	mvs_write_port_vsr_data(mvi, phy_id, tmp & 0xfd7fffff);
315 }
316 
317 static void mvs_94xx_sgpio_init(struct mvs_info *mvi)
318 {
319 	void __iomem *regs = mvi->regs_ex - 0x10200;
320 	u32 tmp;
321 
322 	tmp = mr32(MVS_HST_CHIP_CONFIG);
323 	tmp |= 0x100;
324 	mw32(MVS_HST_CHIP_CONFIG, tmp);
325 
326 	mw32(MVS_SGPIO_CTRL + MVS_SGPIO_HOST_OFFSET * mvi->id,
327 		MVS_SGPIO_CTRL_SDOUT_AUTO << MVS_SGPIO_CTRL_SDOUT_SHIFT);
328 
329 	mw32(MVS_SGPIO_CFG1 + MVS_SGPIO_HOST_OFFSET * mvi->id,
330 		8 << MVS_SGPIO_CFG1_LOWA_SHIFT |
331 		8 << MVS_SGPIO_CFG1_HIA_SHIFT |
332 		4 << MVS_SGPIO_CFG1_LOWB_SHIFT |
333 		4 << MVS_SGPIO_CFG1_HIB_SHIFT |
334 		2 << MVS_SGPIO_CFG1_MAXACTON_SHIFT |
335 		1 << MVS_SGPIO_CFG1_FORCEACTOFF_SHIFT
336 	);
337 
338 	mw32(MVS_SGPIO_CFG2 + MVS_SGPIO_HOST_OFFSET * mvi->id,
339 		(300000 / 100) << MVS_SGPIO_CFG2_CLK_SHIFT | /* 100kHz clock */
340 		66 << MVS_SGPIO_CFG2_BLINK_SHIFT /* (66 * 0,121 Hz?)*/
341 	);
342 
343 	mw32(MVS_SGPIO_CFG0 + MVS_SGPIO_HOST_OFFSET * mvi->id,
344 		MVS_SGPIO_CFG0_ENABLE |
345 		MVS_SGPIO_CFG0_BLINKA |
346 		MVS_SGPIO_CFG0_BLINKB |
347 		/* 3*4 data bits / PDU */
348 		(12 - 1) << MVS_SGPIO_CFG0_AUT_BITLEN_SHIFT
349 	);
350 
351 	mw32(MVS_SGPIO_DCTRL + MVS_SGPIO_HOST_OFFSET * mvi->id,
352 		DEFAULT_SGPIO_BITS);
353 
354 	mw32(MVS_SGPIO_DSRC + MVS_SGPIO_HOST_OFFSET * mvi->id,
355 		((mvi->id * 4) + 3) << (8 * 3) |
356 		((mvi->id * 4) + 2) << (8 * 2) |
357 		((mvi->id * 4) + 1) << (8 * 1) |
358 		((mvi->id * 4) + 0) << (8 * 0));
359 
360 }
361 
362 static int mvs_94xx_init(struct mvs_info *mvi)
363 {
364 	void __iomem *regs = mvi->regs;
365 	int i;
366 	u32 tmp, cctl;
367 	u8 revision;
368 
369 	revision = mvi->pdev->revision;
370 	mvs_show_pcie_usage(mvi);
371 	if (mvi->flags & MVF_FLAG_SOC) {
372 		tmp = mr32(MVS_PHY_CTL);
373 		tmp &= ~PCTL_PWR_OFF;
374 		tmp |= PCTL_PHY_DSBL;
375 		mw32(MVS_PHY_CTL, tmp);
376 	}
377 
378 	/* Init Chip */
379 	/* make sure RST is set; HBA_RST /should/ have done that for us */
380 	cctl = mr32(MVS_CTL) & 0xFFFF;
381 	if (cctl & CCTL_RST)
382 		cctl &= ~CCTL_RST;
383 	else
384 		mw32_f(MVS_CTL, cctl | CCTL_RST);
385 
386 	if (mvi->flags & MVF_FLAG_SOC) {
387 		tmp = mr32(MVS_PHY_CTL);
388 		tmp &= ~PCTL_PWR_OFF;
389 		tmp |= PCTL_COM_ON;
390 		tmp &= ~PCTL_PHY_DSBL;
391 		tmp |= PCTL_LINK_RST;
392 		mw32(MVS_PHY_CTL, tmp);
393 		msleep(100);
394 		tmp &= ~PCTL_LINK_RST;
395 		mw32(MVS_PHY_CTL, tmp);
396 		msleep(100);
397 	}
398 
399 	/* disable Multiplexing, enable phy implemented */
400 	mw32(MVS_PORTS_IMP, 0xFF);
401 
402 	if (revision == VANIR_A0_REV) {
403 		mw32(MVS_PA_VSR_ADDR, CMD_CMWK_OOB_DET);
404 		mw32(MVS_PA_VSR_PORT, 0x00018080);
405 	}
406 	mw32(MVS_PA_VSR_ADDR, VSR_PHY_MODE2);
407 	if (revision == VANIR_A0_REV || revision == VANIR_B0_REV)
408 		/* set 6G/3G/1.5G, multiplexing, without SSC */
409 		mw32(MVS_PA_VSR_PORT, 0x0084d4fe);
410 	else
411 		/* set 6G/3G/1.5G, multiplexing, with and without SSC */
412 		mw32(MVS_PA_VSR_PORT, 0x0084fffe);
413 
414 	if (revision == VANIR_B0_REV) {
415 		mw32(MVS_PA_VSR_ADDR, CMD_APP_MEM_CTL);
416 		mw32(MVS_PA_VSR_PORT, 0x08001006);
417 		mw32(MVS_PA_VSR_ADDR, CMD_HOST_RD_DATA);
418 		mw32(MVS_PA_VSR_PORT, 0x0000705f);
419 	}
420 
421 	/* reset control */
422 	mw32(MVS_PCS, 0);		/* MVS_PCS */
423 	mw32(MVS_STP_REG_SET_0, 0);
424 	mw32(MVS_STP_REG_SET_1, 0);
425 
426 	/* init phys */
427 	mvs_phy_hacks(mvi);
428 
429 	/* disable non data frame retry */
430 	tmp = mvs_cr32(mvi, CMD_SAS_CTL1);
431 	if ((revision == VANIR_A0_REV) ||
432 		(revision == VANIR_B0_REV) ||
433 		(revision == VANIR_C0_REV)) {
434 		tmp &= ~0xffff;
435 		tmp |= 0x007f;
436 		mvs_cw32(mvi, CMD_SAS_CTL1, tmp);
437 	}
438 
439 	/* set LED blink when IO*/
440 	mw32(MVS_PA_VSR_ADDR, VSR_PHY_ACT_LED);
441 	tmp = mr32(MVS_PA_VSR_PORT);
442 	tmp &= 0xFFFF00FF;
443 	tmp |= 0x00003300;
444 	mw32(MVS_PA_VSR_PORT, tmp);
445 
446 	mw32(MVS_CMD_LIST_LO, mvi->slot_dma);
447 	mw32(MVS_CMD_LIST_HI, (mvi->slot_dma >> 16) >> 16);
448 
449 	mw32(MVS_RX_FIS_LO, mvi->rx_fis_dma);
450 	mw32(MVS_RX_FIS_HI, (mvi->rx_fis_dma >> 16) >> 16);
451 
452 	mw32(MVS_TX_CFG, MVS_CHIP_SLOT_SZ);
453 	mw32(MVS_TX_LO, mvi->tx_dma);
454 	mw32(MVS_TX_HI, (mvi->tx_dma >> 16) >> 16);
455 
456 	mw32(MVS_RX_CFG, MVS_RX_RING_SZ);
457 	mw32(MVS_RX_LO, mvi->rx_dma);
458 	mw32(MVS_RX_HI, (mvi->rx_dma >> 16) >> 16);
459 
460 	for (i = 0; i < mvi->chip->n_phy; i++) {
461 		mvs_94xx_phy_disable(mvi, i);
462 		/* set phy local SAS address */
463 		mvs_set_sas_addr(mvi, i, CONFIG_ID_FRAME3, CONFIG_ID_FRAME4,
464 						cpu_to_le64(mvi->phy[i].dev_sas_addr));
465 
466 		mvs_94xx_enable_xmt(mvi, i);
467 		mvs_94xx_config_reg_from_hba(mvi, i);
468 		mvs_94xx_phy_enable(mvi, i);
469 
470 		mvs_94xx_phy_reset(mvi, i, PHY_RST_HARD);
471 		msleep(500);
472 		mvs_94xx_detect_porttype(mvi, i);
473 	}
474 
475 	if (mvi->flags & MVF_FLAG_SOC) {
476 		/* set select registers */
477 		writel(0x0E008000, regs + 0x000);
478 		writel(0x59000008, regs + 0x004);
479 		writel(0x20, regs + 0x008);
480 		writel(0x20, regs + 0x00c);
481 		writel(0x20, regs + 0x010);
482 		writel(0x20, regs + 0x014);
483 		writel(0x20, regs + 0x018);
484 		writel(0x20, regs + 0x01c);
485 	}
486 	for (i = 0; i < mvi->chip->n_phy; i++) {
487 		/* clear phy int status */
488 		tmp = mvs_read_port_irq_stat(mvi, i);
489 		tmp &= ~PHYEV_SIG_FIS;
490 		mvs_write_port_irq_stat(mvi, i, tmp);
491 
492 		/* set phy int mask */
493 		tmp = PHYEV_RDY_CH | PHYEV_BROAD_CH |
494 			PHYEV_ID_DONE  | PHYEV_DCDR_ERR | PHYEV_CRC_ERR ;
495 		mvs_write_port_irq_mask(mvi, i, tmp);
496 
497 		msleep(100);
498 		mvs_update_phyinfo(mvi, i, 1);
499 	}
500 
501 	/* little endian for open address and command table, etc. */
502 	cctl = mr32(MVS_CTL);
503 	cctl |= CCTL_ENDIAN_CMD;
504 	cctl &= ~CCTL_ENDIAN_OPEN;
505 	cctl |= CCTL_ENDIAN_RSP;
506 	mw32_f(MVS_CTL, cctl);
507 
508 	/* reset CMD queue */
509 	tmp = mr32(MVS_PCS);
510 	tmp |= PCS_CMD_RST;
511 	tmp &= ~PCS_SELF_CLEAR;
512 	mw32(MVS_PCS, tmp);
513 	/*
514 	 * the max count is 0x1ff, while our max slot is 0x200,
515 	 * it will make count 0.
516 	 */
517 	tmp = 0;
518 	if (MVS_CHIP_SLOT_SZ > 0x1ff)
519 		mw32(MVS_INT_COAL, 0x1ff | COAL_EN);
520 	else
521 		mw32(MVS_INT_COAL, MVS_CHIP_SLOT_SZ | COAL_EN);
522 
523 	/* default interrupt coalescing time is 128us */
524 	tmp = 0x10000 | interrupt_coalescing;
525 	mw32(MVS_INT_COAL_TMOUT, tmp);
526 
527 	/* ladies and gentlemen, start your engines */
528 	mw32(MVS_TX_CFG, 0);
529 	mw32(MVS_TX_CFG, MVS_CHIP_SLOT_SZ | TX_EN);
530 	mw32(MVS_RX_CFG, MVS_RX_RING_SZ | RX_EN);
531 	/* enable CMD/CMPL_Q/RESP mode */
532 	mw32(MVS_PCS, PCS_SATA_RETRY_2 | PCS_FIS_RX_EN |
533 		PCS_CMD_EN | PCS_CMD_STOP_ERR);
534 
535 	/* enable completion queue interrupt */
536 	tmp = (CINT_PORT_MASK | CINT_DONE | CINT_MEM | CINT_SRS | CINT_CI_STOP |
537 		CINT_DMA_PCIE | CINT_NON_SPEC_NCQ_ERROR);
538 	tmp |= CINT_PHY_MASK;
539 	mw32(MVS_INT_MASK, tmp);
540 
541 	tmp = mvs_cr32(mvi, CMD_LINK_TIMER);
542 	tmp |= 0xFFFF0000;
543 	mvs_cw32(mvi, CMD_LINK_TIMER, tmp);
544 
545 	/* tune STP performance */
546 	tmp = 0x003F003F;
547 	mvs_cw32(mvi, CMD_PL_TIMER, tmp);
548 
549 	/* This can improve expander large block size seq write performance */
550 	tmp = mvs_cr32(mvi, CMD_PORT_LAYER_TIMER1);
551 	tmp |= 0xFFFF007F;
552 	mvs_cw32(mvi, CMD_PORT_LAYER_TIMER1, tmp);
553 
554 	/* change the connection open-close behavior (bit 9)
555 	 * set bit8 to 1 for performance tuning */
556 	tmp = mvs_cr32(mvi, CMD_SL_MODE0);
557 	tmp |= 0x00000300;
558 	/* set bit0 to 0 to enable retry for no_dest reject case */
559 	tmp &= 0xFFFFFFFE;
560 	mvs_cw32(mvi, CMD_SL_MODE0, tmp);
561 
562 	/* Enable SRS interrupt */
563 	mw32(MVS_INT_MASK_SRS_0, 0xFFFF);
564 
565 	mvs_94xx_sgpio_init(mvi);
566 
567 	return 0;
568 }
569 
570 static int mvs_94xx_ioremap(struct mvs_info *mvi)
571 {
572 	if (!mvs_ioremap(mvi, 2, -1)) {
573 		mvi->regs_ex = mvi->regs + 0x10200;
574 		mvi->regs += 0x20000;
575 		if (mvi->id == 1)
576 			mvi->regs += 0x4000;
577 		return 0;
578 	}
579 	return -1;
580 }
581 
582 static void mvs_94xx_iounmap(struct mvs_info *mvi)
583 {
584 	if (mvi->regs) {
585 		mvi->regs -= 0x20000;
586 		if (mvi->id == 1)
587 			mvi->regs -= 0x4000;
588 		mvs_iounmap(mvi->regs);
589 	}
590 }
591 
592 static void mvs_94xx_interrupt_enable(struct mvs_info *mvi)
593 {
594 	void __iomem *regs = mvi->regs_ex;
595 	u32 tmp;
596 
597 	tmp = mr32(MVS_GBL_CTL);
598 	tmp |= (MVS_IRQ_SAS_A | MVS_IRQ_SAS_B);
599 	mw32(MVS_GBL_INT_STAT, tmp);
600 	writel(tmp, regs + 0x0C);
601 	writel(tmp, regs + 0x10);
602 	writel(tmp, regs + 0x14);
603 	writel(tmp, regs + 0x18);
604 	mw32(MVS_GBL_CTL, tmp);
605 }
606 
607 static void mvs_94xx_interrupt_disable(struct mvs_info *mvi)
608 {
609 	void __iomem *regs = mvi->regs_ex;
610 	u32 tmp;
611 
612 	tmp = mr32(MVS_GBL_CTL);
613 
614 	tmp &= ~(MVS_IRQ_SAS_A | MVS_IRQ_SAS_B);
615 	mw32(MVS_GBL_INT_STAT, tmp);
616 	writel(tmp, regs + 0x0C);
617 	writel(tmp, regs + 0x10);
618 	writel(tmp, regs + 0x14);
619 	writel(tmp, regs + 0x18);
620 	mw32(MVS_GBL_CTL, tmp);
621 }
622 
623 static u32 mvs_94xx_isr_status(struct mvs_info *mvi, int irq)
624 {
625 	void __iomem *regs = mvi->regs_ex;
626 	u32 stat = 0;
627 	if (!(mvi->flags & MVF_FLAG_SOC)) {
628 		stat = mr32(MVS_GBL_INT_STAT);
629 
630 		if (!(stat & (MVS_IRQ_SAS_A | MVS_IRQ_SAS_B)))
631 			return 0;
632 	}
633 	return stat;
634 }
635 
636 static irqreturn_t mvs_94xx_isr(struct mvs_info *mvi, int irq, u32 stat)
637 {
638 	void __iomem *regs = mvi->regs;
639 
640 	if (((stat & MVS_IRQ_SAS_A) && mvi->id == 0) ||
641 			((stat & MVS_IRQ_SAS_B) && mvi->id == 1)) {
642 		mw32_f(MVS_INT_STAT, CINT_DONE);
643 
644 		spin_lock(&mvi->lock);
645 		mvs_int_full(mvi);
646 		spin_unlock(&mvi->lock);
647 	}
648 	return IRQ_HANDLED;
649 }
650 
651 static void mvs_94xx_command_active(struct mvs_info *mvi, u32 slot_idx)
652 {
653 	u32 tmp;
654 	tmp = mvs_cr32(mvi, MVS_COMMAND_ACTIVE+(slot_idx >> 3));
655 	if (tmp & 1 << (slot_idx % 32)) {
656 		mv_printk("command active %08X,  slot [%x].\n", tmp, slot_idx);
657 		mvs_cw32(mvi, MVS_COMMAND_ACTIVE + (slot_idx >> 3),
658 			1 << (slot_idx % 32));
659 		do {
660 			tmp = mvs_cr32(mvi,
661 				MVS_COMMAND_ACTIVE + (slot_idx >> 3));
662 		} while (tmp & 1 << (slot_idx % 32));
663 	}
664 }
665 
666 static void
667 mvs_94xx_clear_srs_irq(struct mvs_info *mvi, u8 reg_set, u8 clear_all)
668 {
669 	void __iomem *regs = mvi->regs;
670 	u32 tmp;
671 
672 	if (clear_all) {
673 		tmp = mr32(MVS_INT_STAT_SRS_0);
674 		if (tmp) {
675 			mv_dprintk("check SRS 0 %08X.\n", tmp);
676 			mw32(MVS_INT_STAT_SRS_0, tmp);
677 		}
678 		tmp = mr32(MVS_INT_STAT_SRS_1);
679 		if (tmp) {
680 			mv_dprintk("check SRS 1 %08X.\n", tmp);
681 			mw32(MVS_INT_STAT_SRS_1, tmp);
682 		}
683 	} else {
684 		if (reg_set > 31)
685 			tmp = mr32(MVS_INT_STAT_SRS_1);
686 		else
687 			tmp = mr32(MVS_INT_STAT_SRS_0);
688 
689 		if (tmp & (1 << (reg_set % 32))) {
690 			mv_dprintk("register set 0x%x was stopped.\n", reg_set);
691 			if (reg_set > 31)
692 				mw32(MVS_INT_STAT_SRS_1, 1 << (reg_set % 32));
693 			else
694 				mw32(MVS_INT_STAT_SRS_0, 1 << (reg_set % 32));
695 		}
696 	}
697 }
698 
699 static void mvs_94xx_issue_stop(struct mvs_info *mvi, enum mvs_port_type type,
700 				u32 tfs)
701 {
702 	void __iomem *regs = mvi->regs;
703 	u32 tmp;
704 	mvs_94xx_clear_srs_irq(mvi, 0, 1);
705 
706 	tmp = mr32(MVS_INT_STAT);
707 	mw32(MVS_INT_STAT, tmp | CINT_CI_STOP);
708 	tmp = mr32(MVS_PCS) | 0xFF00;
709 	mw32(MVS_PCS, tmp);
710 }
711 
712 static void mvs_94xx_non_spec_ncq_error(struct mvs_info *mvi)
713 {
714 	void __iomem *regs = mvi->regs;
715 	u32 err_0, err_1;
716 	u8 i;
717 	struct mvs_device *device;
718 
719 	err_0 = mr32(MVS_NON_NCQ_ERR_0);
720 	err_1 = mr32(MVS_NON_NCQ_ERR_1);
721 
722 	mv_dprintk("non specific ncq error err_0:%x,err_1:%x.\n",
723 			err_0, err_1);
724 	for (i = 0; i < 32; i++) {
725 		if (err_0 & bit(i)) {
726 			device = mvs_find_dev_by_reg_set(mvi, i);
727 			if (device)
728 				mvs_release_task(mvi, device->sas_device);
729 		}
730 		if (err_1 & bit(i)) {
731 			device = mvs_find_dev_by_reg_set(mvi, i+32);
732 			if (device)
733 				mvs_release_task(mvi, device->sas_device);
734 		}
735 	}
736 
737 	mw32(MVS_NON_NCQ_ERR_0, err_0);
738 	mw32(MVS_NON_NCQ_ERR_1, err_1);
739 }
740 
741 static void mvs_94xx_free_reg_set(struct mvs_info *mvi, u8 *tfs)
742 {
743 	void __iomem *regs = mvi->regs;
744 	u8 reg_set = *tfs;
745 
746 	if (*tfs == MVS_ID_NOT_MAPPED)
747 		return;
748 
749 	mvi->sata_reg_set &= ~bit(reg_set);
750 	if (reg_set < 32)
751 		w_reg_set_enable(reg_set, (u32)mvi->sata_reg_set);
752 	else
753 		w_reg_set_enable(reg_set, (u32)(mvi->sata_reg_set >> 32));
754 
755 	*tfs = MVS_ID_NOT_MAPPED;
756 
757 	return;
758 }
759 
760 static u8 mvs_94xx_assign_reg_set(struct mvs_info *mvi, u8 *tfs)
761 {
762 	int i;
763 	void __iomem *regs = mvi->regs;
764 
765 	if (*tfs != MVS_ID_NOT_MAPPED)
766 		return 0;
767 
768 	i = mv_ffc64(mvi->sata_reg_set);
769 	if (i >= 32) {
770 		mvi->sata_reg_set |= bit(i);
771 		w_reg_set_enable(i, (u32)(mvi->sata_reg_set >> 32));
772 		*tfs = i;
773 		return 0;
774 	} else if (i >= 0) {
775 		mvi->sata_reg_set |= bit(i);
776 		w_reg_set_enable(i, (u32)mvi->sata_reg_set);
777 		*tfs = i;
778 		return 0;
779 	}
780 	return MVS_ID_NOT_MAPPED;
781 }
782 
783 static void mvs_94xx_make_prd(struct scatterlist *scatter, int nr, void *prd)
784 {
785 	int i;
786 	struct scatterlist *sg;
787 	struct mvs_prd *buf_prd = prd;
788 	struct mvs_prd_imt im_len;
789 	*(u32 *)&im_len = 0;
790 	for_each_sg(scatter, sg, nr, i) {
791 		buf_prd->addr = cpu_to_le64(sg_dma_address(sg));
792 		im_len.len = sg_dma_len(sg);
793 		buf_prd->im_len = cpu_to_le32(*(u32 *)&im_len);
794 		buf_prd++;
795 	}
796 }
797 
798 static int mvs_94xx_oob_done(struct mvs_info *mvi, int i)
799 {
800 	u32 phy_st;
801 	phy_st = mvs_read_phy_ctl(mvi, i);
802 	if (phy_st & PHY_READY_MASK)
803 		return 1;
804 	return 0;
805 }
806 
807 static void mvs_94xx_get_dev_identify_frame(struct mvs_info *mvi, int port_id,
808 					struct sas_identify_frame *id)
809 {
810 	int i;
811 	u32 id_frame[7];
812 
813 	for (i = 0; i < 7; i++) {
814 		mvs_write_port_cfg_addr(mvi, port_id,
815 					CONFIG_ID_FRAME0 + i * 4);
816 		id_frame[i] = cpu_to_le32(mvs_read_port_cfg_data(mvi, port_id));
817 	}
818 	memcpy(id, id_frame, 28);
819 }
820 
821 static void mvs_94xx_get_att_identify_frame(struct mvs_info *mvi, int port_id,
822 					struct sas_identify_frame *id)
823 {
824 	int i;
825 	u32 id_frame[7];
826 
827 	for (i = 0; i < 7; i++) {
828 		mvs_write_port_cfg_addr(mvi, port_id,
829 					CONFIG_ATT_ID_FRAME0 + i * 4);
830 		id_frame[i] = cpu_to_le32(mvs_read_port_cfg_data(mvi, port_id));
831 		mv_dprintk("94xx phy %d atta frame %d %x.\n",
832 			port_id + mvi->id * mvi->chip->n_phy, i, id_frame[i]);
833 	}
834 	memcpy(id, id_frame, 28);
835 }
836 
837 static u32 mvs_94xx_make_dev_info(struct sas_identify_frame *id)
838 {
839 	u32 att_dev_info = 0;
840 
841 	att_dev_info |= id->dev_type;
842 	if (id->stp_iport)
843 		att_dev_info |= PORT_DEV_STP_INIT;
844 	if (id->smp_iport)
845 		att_dev_info |= PORT_DEV_SMP_INIT;
846 	if (id->ssp_iport)
847 		att_dev_info |= PORT_DEV_SSP_INIT;
848 	if (id->stp_tport)
849 		att_dev_info |= PORT_DEV_STP_TRGT;
850 	if (id->smp_tport)
851 		att_dev_info |= PORT_DEV_SMP_TRGT;
852 	if (id->ssp_tport)
853 		att_dev_info |= PORT_DEV_SSP_TRGT;
854 
855 	att_dev_info |= (u32)id->phy_id<<24;
856 	return att_dev_info;
857 }
858 
859 static u32 mvs_94xx_make_att_info(struct sas_identify_frame *id)
860 {
861 	return mvs_94xx_make_dev_info(id);
862 }
863 
864 static void mvs_94xx_fix_phy_info(struct mvs_info *mvi, int i,
865 				struct sas_identify_frame *id)
866 {
867 	struct mvs_phy *phy = &mvi->phy[i];
868 	struct asd_sas_phy *sas_phy = &phy->sas_phy;
869 	mv_dprintk("get all reg link rate is 0x%x\n", phy->phy_status);
870 	sas_phy->linkrate =
871 		(phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
872 			PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET;
873 	sas_phy->linkrate += 0x8;
874 	mv_dprintk("get link rate is %d\n", sas_phy->linkrate);
875 	phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS;
876 	phy->maximum_linkrate = SAS_LINK_RATE_6_0_GBPS;
877 	mvs_94xx_get_dev_identify_frame(mvi, i, id);
878 	phy->dev_info = mvs_94xx_make_dev_info(id);
879 
880 	if (phy->phy_type & PORT_TYPE_SAS) {
881 		mvs_94xx_get_att_identify_frame(mvi, i, id);
882 		phy->att_dev_info = mvs_94xx_make_att_info(id);
883 		phy->att_dev_sas_addr = *(u64 *)id->sas_addr;
884 	} else {
885 		phy->att_dev_info = PORT_DEV_STP_TRGT | 1;
886 	}
887 
888 	/* enable spin up bit */
889 	mvs_write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
890 	mvs_write_port_cfg_data(mvi, i, 0x04);
891 
892 }
893 
894 static void mvs_94xx_phy_set_link_rate(struct mvs_info *mvi, u32 phy_id,
895 				       struct sas_phy_linkrates *rates)
896 {
897 	u32 lrmax = 0;
898 	u32 tmp;
899 
900 	tmp = mvs_read_phy_ctl(mvi, phy_id);
901 	lrmax = (rates->maximum_linkrate - SAS_LINK_RATE_1_5_GBPS) << 12;
902 
903 	if (lrmax) {
904 		tmp &= ~(0x3 << 12);
905 		tmp |= lrmax;
906 	}
907 	mvs_write_phy_ctl(mvi, phy_id, tmp);
908 	mvs_94xx_phy_reset(mvi, phy_id, PHY_RST_HARD);
909 }
910 
911 static void mvs_94xx_clear_active_cmds(struct mvs_info *mvi)
912 {
913 	u32 tmp;
914 	void __iomem *regs = mvi->regs;
915 	tmp = mr32(MVS_STP_REG_SET_0);
916 	mw32(MVS_STP_REG_SET_0, 0);
917 	mw32(MVS_STP_REG_SET_0, tmp);
918 	tmp = mr32(MVS_STP_REG_SET_1);
919 	mw32(MVS_STP_REG_SET_1, 0);
920 	mw32(MVS_STP_REG_SET_1, tmp);
921 }
922 
923 
924 static u32 mvs_94xx_spi_read_data(struct mvs_info *mvi)
925 {
926 	void __iomem *regs = mvi->regs_ex - 0x10200;
927 	return mr32(SPI_RD_DATA_REG_94XX);
928 }
929 
930 static void mvs_94xx_spi_write_data(struct mvs_info *mvi, u32 data)
931 {
932 	void __iomem *regs = mvi->regs_ex - 0x10200;
933 
934 	mw32(SPI_RD_DATA_REG_94XX, data);
935 }
936 
937 
938 static int mvs_94xx_spi_buildcmd(struct mvs_info *mvi,
939 				 u32      *dwCmd,
940 				 u8       cmd,
941 				 u8       read,
942 				 u8       length,
943 				 u32      addr
944 				)
945 {
946 	void __iomem *regs = mvi->regs_ex - 0x10200;
947 	u32  dwTmp;
948 
949 	dwTmp = ((u32)cmd << 8) | ((u32)length << 4);
950 	if (read)
951 		dwTmp |= SPI_CTRL_READ_94XX;
952 
953 	if (addr != MV_MAX_U32) {
954 		mw32(SPI_ADDR_REG_94XX, (addr & 0x0003FFFFL));
955 		dwTmp |= SPI_ADDR_VLD_94XX;
956 	}
957 
958 	*dwCmd = dwTmp;
959 	return 0;
960 }
961 
962 
963 static int mvs_94xx_spi_issuecmd(struct mvs_info *mvi, u32 cmd)
964 {
965 	void __iomem *regs = mvi->regs_ex - 0x10200;
966 	mw32(SPI_CTRL_REG_94XX, cmd | SPI_CTRL_SpiStart_94XX);
967 
968 	return 0;
969 }
970 
971 static int mvs_94xx_spi_waitdataready(struct mvs_info *mvi, u32 timeout)
972 {
973 	void __iomem *regs = mvi->regs_ex - 0x10200;
974 	u32   i, dwTmp;
975 
976 	for (i = 0; i < timeout; i++) {
977 		dwTmp = mr32(SPI_CTRL_REG_94XX);
978 		if (!(dwTmp & SPI_CTRL_SpiStart_94XX))
979 			return 0;
980 		msleep(10);
981 	}
982 
983 	return -1;
984 }
985 
986 static void mvs_94xx_fix_dma(struct mvs_info *mvi, u32 phy_mask,
987 			     int buf_len, int from, void *prd)
988 {
989 	int i;
990 	struct mvs_prd *buf_prd = prd;
991 	dma_addr_t buf_dma;
992 	struct mvs_prd_imt im_len;
993 
994 	*(u32 *)&im_len = 0;
995 	buf_prd += from;
996 
997 #define PRD_CHAINED_ENTRY 0x01
998 	if ((mvi->pdev->revision == VANIR_A0_REV) ||
999 			(mvi->pdev->revision == VANIR_B0_REV))
1000 		buf_dma = (phy_mask <= 0x08) ?
1001 				mvi->bulk_buffer_dma : mvi->bulk_buffer_dma1;
1002 	else
1003 		return;
1004 
1005 	for (i = from; i < MAX_SG_ENTRY; i++, ++buf_prd) {
1006 		if (i == MAX_SG_ENTRY - 1) {
1007 			buf_prd->addr = cpu_to_le64(virt_to_phys(buf_prd - 1));
1008 			im_len.len = 2;
1009 			im_len.misc_ctl = PRD_CHAINED_ENTRY;
1010 		} else {
1011 			buf_prd->addr = cpu_to_le64(buf_dma);
1012 			im_len.len = buf_len;
1013 		}
1014 		buf_prd->im_len = cpu_to_le32(*(u32 *)&im_len);
1015 	}
1016 }
1017 
1018 static void mvs_94xx_tune_interrupt(struct mvs_info *mvi, u32 time)
1019 {
1020 	void __iomem *regs = mvi->regs;
1021 	u32 tmp = 0;
1022 	/*
1023 	 * the max count is 0x1ff, while our max slot is 0x200,
1024 	 * it will make count 0.
1025 	 */
1026 	if (time == 0) {
1027 		mw32(MVS_INT_COAL, 0);
1028 		mw32(MVS_INT_COAL_TMOUT, 0x10000);
1029 	} else {
1030 		if (MVS_CHIP_SLOT_SZ > 0x1ff)
1031 			mw32(MVS_INT_COAL, 0x1ff|COAL_EN);
1032 		else
1033 			mw32(MVS_INT_COAL, MVS_CHIP_SLOT_SZ|COAL_EN);
1034 
1035 		tmp = 0x10000 | time;
1036 		mw32(MVS_INT_COAL_TMOUT, tmp);
1037 	}
1038 
1039 }
1040 
1041 static int mvs_94xx_gpio_write(struct mvs_prv_info *mvs_prv,
1042 			u8 reg_type, u8 reg_index,
1043 			u8 reg_count, u8 *write_data)
1044 {
1045 	int i;
1046 
1047 	switch (reg_type) {
1048 
1049 	case SAS_GPIO_REG_TX_GP:
1050 		if (reg_index == 0)
1051 			return -EINVAL;
1052 
1053 		if (reg_count > 1)
1054 			return -EINVAL;
1055 
1056 		if (reg_count == 0)
1057 			return 0;
1058 
1059 		/* maximum supported bits = hosts * 4 drives * 3 bits */
1060 		for (i = 0; i < mvs_prv->n_host * 4 * 3; i++) {
1061 
1062 			/* select host */
1063 			struct mvs_info *mvi = mvs_prv->mvi[i/(4*3)];
1064 
1065 			void __iomem *regs = mvi->regs_ex - 0x10200;
1066 
1067 			int drive = (i/3) & (4-1); /* drive number on host */
1068 			int driveshift = drive * 8; /* bit offset of drive */
1069 			u32 block = ioread32be(regs + MVS_SGPIO_DCTRL +
1070 				MVS_SGPIO_HOST_OFFSET * mvi->id);
1071 
1072 			/*
1073 			* if bit is set then create a mask with the first
1074 			* bit of the drive set in the mask ...
1075 			*/
1076 			u32 bit = get_unaligned_be32(write_data) & (1 << i) ?
1077 				1 << driveshift : 0;
1078 
1079 			/*
1080 			* ... and then shift it to the right position based
1081 			* on the led type (activity/id/fail)
1082 			*/
1083 			switch (i%3) {
1084 			case 0: /* activity */
1085 				block &= ~((0x7 << MVS_SGPIO_DCTRL_ACT_SHIFT)
1086 					<< driveshift);
1087 					/* hardwire activity bit to SOF */
1088 				block |= LED_BLINKA_SOF << (
1089 					MVS_SGPIO_DCTRL_ACT_SHIFT +
1090 					driveshift);
1091 				break;
1092 			case 1: /* id */
1093 				block &= ~((0x3 << MVS_SGPIO_DCTRL_LOC_SHIFT)
1094 					<< driveshift);
1095 				block |= bit << MVS_SGPIO_DCTRL_LOC_SHIFT;
1096 				break;
1097 			case 2: /* fail */
1098 				block &= ~((0x7 << MVS_SGPIO_DCTRL_ERR_SHIFT)
1099 					<< driveshift);
1100 				block |= bit << MVS_SGPIO_DCTRL_ERR_SHIFT;
1101 				break;
1102 			}
1103 
1104 			iowrite32be(block,
1105 				regs + MVS_SGPIO_DCTRL +
1106 				MVS_SGPIO_HOST_OFFSET * mvi->id);
1107 
1108 		}
1109 
1110 		return reg_count;
1111 
1112 	case SAS_GPIO_REG_TX:
1113 		if (reg_index + reg_count > mvs_prv->n_host)
1114 			return -EINVAL;
1115 
1116 		for (i = 0; i < reg_count; i++) {
1117 			struct mvs_info *mvi = mvs_prv->mvi[i+reg_index];
1118 			void __iomem *regs = mvi->regs_ex - 0x10200;
1119 
1120 			mw32(MVS_SGPIO_DCTRL + MVS_SGPIO_HOST_OFFSET * mvi->id,
1121 				((u32 *) write_data)[i]);
1122 		}
1123 		return reg_count;
1124 	}
1125 	return -ENOSYS;
1126 }
1127 
1128 const struct mvs_dispatch mvs_94xx_dispatch = {
1129 	"mv94xx",
1130 	mvs_94xx_init,
1131 	NULL,
1132 	mvs_94xx_ioremap,
1133 	mvs_94xx_iounmap,
1134 	mvs_94xx_isr,
1135 	mvs_94xx_isr_status,
1136 	mvs_94xx_interrupt_enable,
1137 	mvs_94xx_interrupt_disable,
1138 	mvs_read_phy_ctl,
1139 	mvs_write_phy_ctl,
1140 	mvs_read_port_cfg_data,
1141 	mvs_write_port_cfg_data,
1142 	mvs_write_port_cfg_addr,
1143 	mvs_read_port_vsr_data,
1144 	mvs_write_port_vsr_data,
1145 	mvs_write_port_vsr_addr,
1146 	mvs_read_port_irq_stat,
1147 	mvs_write_port_irq_stat,
1148 	mvs_read_port_irq_mask,
1149 	mvs_write_port_irq_mask,
1150 	mvs_94xx_command_active,
1151 	mvs_94xx_clear_srs_irq,
1152 	mvs_94xx_issue_stop,
1153 	mvs_start_delivery,
1154 	mvs_rx_update,
1155 	mvs_int_full,
1156 	mvs_94xx_assign_reg_set,
1157 	mvs_94xx_free_reg_set,
1158 	mvs_get_prd_size,
1159 	mvs_get_prd_count,
1160 	mvs_94xx_make_prd,
1161 	mvs_94xx_detect_porttype,
1162 	mvs_94xx_oob_done,
1163 	mvs_94xx_fix_phy_info,
1164 	NULL,
1165 	mvs_94xx_phy_set_link_rate,
1166 	mvs_hw_max_link_rate,
1167 	mvs_94xx_phy_disable,
1168 	mvs_94xx_phy_enable,
1169 	mvs_94xx_phy_reset,
1170 	NULL,
1171 	mvs_94xx_clear_active_cmds,
1172 	mvs_94xx_spi_read_data,
1173 	mvs_94xx_spi_write_data,
1174 	mvs_94xx_spi_buildcmd,
1175 	mvs_94xx_spi_issuecmd,
1176 	mvs_94xx_spi_waitdataready,
1177 	mvs_94xx_fix_dma,
1178 	mvs_94xx_tune_interrupt,
1179 	mvs_94xx_non_spec_ncq_error,
1180 	mvs_94xx_gpio_write,
1181 };
1182 
1183