1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 1998-2000 Michel Aubry
4  * Copyright (C) 1998-2000 Andrzej Krzysztofowicz
5  * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
6  * Copyright (C) 2007-2010 Bartlomiej Zolnierkiewicz
13  *         supports UDMA mode 2 (33 MB/s)
16  *         all revisions support UDMA mode 4 (66 MB/s)
17  *         revision A2.0 and up support UDMA mode 5 (100 MB/s)
20  *         *** to detect 80-conductor cable presence. ***
24  *   HT1000: AKA BCM5785 - Hypertransport Southbridge for Opteron systems. IDE
46 /* Seagate Barracuda ATA IV Family drives in UDMA mode 5
56 static int check_in_drive_lists (ide_drive_t *drive, const char **list)  in check_in_drive_lists()  argument
58 	char *m = (char *)&drive->id[ATA_ID_PROD];  in check_in_drive_lists()
66 static u8 svwks_udma_filter(ide_drive_t *drive)  in svwks_udma_filter()  argument
68 	struct pci_dev *dev = to_pci_dev(drive->hwif->dev);  in svwks_udma_filter()
70 	if (dev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE) {  in svwks_udma_filter()
72 	} else if (dev->revision < SVWKS_CSB5_REVISION_NEW) {  in svwks_udma_filter()
75 		u8 btr = 0, mode, mask;  in svwks_udma_filter()  local
78 		mode = btr & 0x3;  in svwks_udma_filter()
82 		if (mode > 2 && check_in_drive_lists(drive, svwks_bad_ata100))  in svwks_udma_filter()
83 			mode = 2;  in svwks_udma_filter()
85 		switch(mode) {  in svwks_udma_filter()
98 	switch (dev->device) {  in svwks_csb_check()
110 static void svwks_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)  in svwks_set_pio_mode()  argument
115 	struct pci_dev *dev = to_pci_dev(hwif->dev);  in svwks_set_pio_mode()
116 	const u8 pio = drive->pio_mode - XFER_PIO_0;  in svwks_set_pio_mode()
118 	if (drive->dn >= ARRAY_SIZE(drive_pci))  in svwks_set_pio_mode()
121 	pci_write_config_byte(dev, drive_pci[drive->dn], pio_modes[pio]);  in svwks_set_pio_mode()
128 		csb_pio &= ~(0x0f << (4 * drive->dn));  in svwks_set_pio_mode()
129 		csb_pio |= (pio << (4 * drive->dn));  in svwks_set_pio_mode()
135 static void svwks_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)  in svwks_set_dma_mode()  argument
141 	struct pci_dev *dev	= to_pci_dev(hwif->dev);  in svwks_set_dma_mode()
142 	const u8 speed		= drive->dma_mode;  in svwks_set_dma_mode()
143 	u8 unit			= drive->dn & 1;  in svwks_set_dma_mode()
147 	if (drive->dn >= ARRAY_SIZE(drive_pci2))  in svwks_set_dma_mode()
150 	pci_read_config_byte(dev, (0x56|hwif->channel), &ultra_timing);  in svwks_set_dma_mode()
154 	ultra_enable	&= ~(0x01 << drive->dn);  in svwks_set_dma_mode()
158 		ultra_timing |= (udma_modes[speed - XFER_UDMA_0] << (4 * unit));  in svwks_set_dma_mode()
159 		ultra_enable |= (0x01 << drive->dn);  in svwks_set_dma_mode()
161 		dma_timing   |= dma_modes[speed - XFER_MW_DMA_0];  in svwks_set_dma_mode()
163 	pci_write_config_byte(dev, drive_pci2[drive->dn], dma_timing);  in svwks_set_dma_mode()
164 	pci_write_config_byte(dev, (0x56|hwif->channel), ultra_timing);  in svwks_set_dma_mode()
177 	if (dev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {  in init_chipset_svwks()
194 	else if ((dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE) ||  in init_chipset_svwks()
195 		 (dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE) ||  in init_chipset_svwks()
196 		 (dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2)) {  in init_chipset_svwks()
199 		if (!(PCI_FUNC(dev->devfn) & 1)) {  in init_chipset_svwks()
213 			dev->irq = inb_p(0x0c01);  in init_chipset_svwks()
228 			 * Since there will be a future raid mode,  in init_chipset_svwks()
231 			 * mode issue.  in init_chipset_svwks()
233 			if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE)  in init_chipset_svwks()
234 				dev->irq = 0;  in init_chipset_svwks()
243 		 * 2. enable DMA modes with bits 0-1  in init_chipset_svwks()
251 		if (!(PCI_FUNC(dev->devfn) & 1))  in init_chipset_svwks()
254 			btr |= (dev->revision >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;  in init_chipset_svwks()
257 	/* Setup HT1000 SouthBridge Controller - Single Channel Only */  in init_chipset_svwks()
258 	else if (dev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE) {  in init_chipset_svwks()
274  * of the subsystem device ID indicate presence of an 80-pin cable.
275  * Bit 15 clear = secondary IDE channel does not have 80-pin cable.
276  * Bit 15 set   = secondary IDE channel has 80-pin cable.
277  * Bit 14 clear = primary IDE channel does not have 80-pin cable.
278  * Bit 14 set   = primary IDE channel has 80-pin cable.
282 	struct pci_dev *dev = to_pci_dev(hwif->dev);  in ata66_svwks_dell()
284 	if (dev->subsystem_vendor == PCI_VENDOR_ID_DELL &&  in ata66_svwks_dell()
285 	    dev->vendor	== PCI_VENDOR_ID_SERVERWORKS &&  in ata66_svwks_dell()
286 	    (dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE ||  in ata66_svwks_dell()
287 	     dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE))  in ata66_svwks_dell()
288 		return ((1 << (hwif->channel + 14)) &  in ata66_svwks_dell()
289 			dev->subsystem_device) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;  in ata66_svwks_dell()
293 /* Sun Cobalt Alpine hardware avoids the 80-pin cable
301 	struct pci_dev *dev = to_pci_dev(hwif->dev);  in ata66_svwks_cobalt()
303 	if (dev->subsystem_vendor == PCI_VENDOR_ID_SUN &&  in ata66_svwks_cobalt()
304 	    dev->vendor	== PCI_VENDOR_ID_SERVERWORKS &&  in ata66_svwks_cobalt()
305 	    dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE)  in ata66_svwks_cobalt()
306 		return ((1 << (hwif->channel + 14)) &  in ata66_svwks_cobalt()
307 			dev->subsystem_device) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;  in ata66_svwks_cobalt()
313 	struct pci_dev *dev = to_pci_dev(hwif->dev);  in svwks_cable_detect()
316 	if (dev->subsystem_vendor == PCI_VENDOR_ID_SERVERWORKS)  in svwks_cable_detect()
320 	if (dev->subsystem_vendor == PCI_VENDOR_ID_DELL)  in svwks_cable_detect()
324 	if (dev->subsystem_vendor == PCI_VENDOR_ID_SUN)  in svwks_cable_detect()
328 	if ((dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE) ||  in svwks_cable_detect()
329 	    (dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2))  in svwks_cable_detect()
372 	{	/* 3: CSB6-2 */
393  *	svwks_init_one	-	called when a OSB/CSB is found
404 	u8 idx = id->driver_data;  in svwks_init_one()
411 		if ((PCI_FUNC(dev->devfn) & 1) == 0) {  in svwks_init_one()