hw/ide/cmd646.c - qemu - Git at Google

 /*
  * QEMU IDE Emulation: PCI cmd646 support.
  *
  * Copyright (c) 2003 Fabrice Bellard
  * Copyright (c) 2006 Openedhand Ltd.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
 #include <hw/hw.h>
 #include <hw/pc.h>
 #include <hw/pci.h>
 #include <hw/isa.h>
 #include "block.h"
 #include "block_int.h"
 #include "sysemu.h"
 #include "dma.h"

 #include <hw/ide/pci.h>

 /* CMD646 specific */
 #define MRDMODE		0x71
 #define   MRDMODE_INTR_CH0	0x04
 #define   MRDMODE_INTR_CH1	0x08
 #define   MRDMODE_BLK_CH0	0x10
 #define   MRDMODE_BLK_CH1	0x20
 #define UDIDETCR0	0x73
 #define UDIDETCR1	0x7B

 static void cmd646_update_irq(PCIIDEState *d);

 static void ide_map(PCIDevice *pci_dev, int region_num,
                     pcibus_t addr, pcibus_t size, int type)
 {
     PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
     IDEBus *bus;

     if (region_num <= 3) {
         bus = &d->bus[(region_num >> 1)];
         if (region_num & 1) {
             register_ioport_read(addr + 2, 1, 1, ide_status_read, bus);
             register_ioport_write(addr + 2, 1, 1, ide_cmd_write, bus);
         } else {
             register_ioport_write(addr, 8, 1, ide_ioport_write, bus);
             register_ioport_read(addr, 8, 1, ide_ioport_read, bus);

             /* data ports */
             register_ioport_write(addr, 2, 2, ide_data_writew, bus);
             register_ioport_read(addr, 2, 2, ide_data_readw, bus);
             register_ioport_write(addr, 4, 4, ide_data_writel, bus);
             register_ioport_read(addr, 4, 4, ide_data_readl, bus);
         }
     }
 }

 static uint32_t bmdma_readb_common(PCIIDEState *pci_dev, BMDMAState *bm,
                                    uint32_t addr)
 {
     uint32_t val;

     switch(addr & 3) {
     case 0:
         val = bm->cmd;
         break;
     case 1:
         val = pci_dev->dev.config[MRDMODE];
         break;
     case 2:
         val = bm->status;
         break;
     case 3:
         if (bm == &pci_dev->bmdma[0]) {
             val = pci_dev->dev.config[UDIDETCR0];
         } else {
             val = pci_dev->dev.config[UDIDETCR1];
         }
         break;
     default:
         val = 0xff;
         break;
     }
 #ifdef DEBUG_IDE
     printf("bmdma: readb 0x%02x : 0x%02x\n", addr, val);
 #endif
     return val;
 }

 static uint32_t bmdma_readb_0(void *opaque, uint32_t addr)
 {
     PCIIDEState *pci_dev = opaque;
     BMDMAState *bm = &pci_dev->bmdma[0];

     return bmdma_readb_common(pci_dev, bm, addr);
 }

 static uint32_t bmdma_readb_1(void *opaque, uint32_t addr)
 {
     PCIIDEState *pci_dev = opaque;
     BMDMAState *bm = &pci_dev->bmdma[1];

     return bmdma_readb_common(pci_dev, bm, addr);
 }

 static void bmdma_writeb_common(PCIIDEState *pci_dev, BMDMAState *bm,
                                 uint32_t addr, uint32_t val)
 {
 #ifdef DEBUG_IDE
     printf("bmdma: writeb 0x%02x : 0x%02x\n", addr, val);
 #endif
     switch(addr & 3) {
     case 0:
         bmdma_cmd_writeb(bm, addr, val);
         break;
     case 1:
         pci_dev->dev.config[MRDMODE] =
             (pci_dev->dev.config[MRDMODE] & ~0x30) | (val & 0x30);
         cmd646_update_irq(pci_dev);
         break;
     case 2:
         bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06);
         break;
     case 3:
         if (bm == &pci_dev->bmdma[0])
             pci_dev->dev.config[UDIDETCR0] = val;
         else
             pci_dev->dev.config[UDIDETCR1] = val;
         break;
     }
 }

 static void bmdma_writeb_0(void *opaque, uint32_t addr, uint32_t val)
 {
     PCIIDEState *pci_dev = opaque;
     BMDMAState *bm = &pci_dev->bmdma[0];

     bmdma_writeb_common(pci_dev, bm, addr, val);
 }

 static void bmdma_writeb_1(void *opaque, uint32_t addr, uint32_t val)
 {
     PCIIDEState *pci_dev = opaque;
     BMDMAState *bm = &pci_dev->bmdma[1];

     bmdma_writeb_common(pci_dev, bm, addr, val);
 }

 static void bmdma_map(PCIDevice *pci_dev, int region_num,
                     pcibus_t addr, pcibus_t size, int type)
 {
     PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
     int i;

     for(i = 0;i < 2; i++) {
         BMDMAState *bm = &d->bmdma[i];
         d->bus[i].bmdma = bm;
         bm->bus = d->bus+i;
         qemu_add_vm_change_state_handler(ide_dma_restart_cb, bm);

         if (i == 0) {
             register_ioport_write(addr, 4, 1, bmdma_writeb_0, d);
             register_ioport_read(addr, 4, 1, bmdma_readb_0, d);
         } else {
             register_ioport_write(addr, 4, 1, bmdma_writeb_1, d);
             register_ioport_read(addr, 4, 1, bmdma_readb_1, d);
         }

         register_ioport_write(addr + 4, 4, 1, bmdma_addr_writeb, bm);
         register_ioport_read(addr + 4, 4, 1, bmdma_addr_readb, bm);
         register_ioport_write(addr + 4, 4, 2, bmdma_addr_writew, bm);
         register_ioport_read(addr + 4, 4, 2, bmdma_addr_readw, bm);
         register_ioport_write(addr + 4, 4, 4, bmdma_addr_writel, bm);
         register_ioport_read(addr + 4, 4, 4, bmdma_addr_readl, bm);
         addr += 8;
     }
 }

 /* XXX: call it also when the MRDMODE is changed from the PCI config
    registers */
 static void cmd646_update_irq(PCIIDEState *d)
 {
     int pci_level;
     pci_level = ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH0) &&
                  !(d->dev.config[MRDMODE] & MRDMODE_BLK_CH0)) ||
         ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH1) &&
          !(d->dev.config[MRDMODE] & MRDMODE_BLK_CH1));
     qemu_set_irq(d->dev.irq[0], pci_level);
 }

 /* the PCI irq level is the logical OR of the two channels */
 static void cmd646_set_irq(void *opaque, int channel, int level)
 {
     PCIIDEState *d = opaque;
     int irq_mask;

     irq_mask = MRDMODE_INTR_CH0 << channel;
     if (level)
         d->dev.config[MRDMODE] |= irq_mask;
     else
         d->dev.config[MRDMODE] &= ~irq_mask;
     cmd646_update_irq(d);
 }

 static void cmd646_reset(void *opaque)
 {
     PCIIDEState *d = opaque;
     unsigned int i;

     for (i = 0; i < 2; i++) {
         ide_bus_reset(&d->bus[i]);
         ide_dma_reset(&d->bmdma[i]);
     }
 }

 /* CMD646 PCI IDE controller */
 static int pci_cmd646_ide_initfn(PCIDevice *dev)
 {
     PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
     uint8_t *pci_conf = d->dev.config;
     qemu_irq *irq;

     pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_CMD);
     pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_CMD_646);

     pci_conf[PCI_REVISION_ID] = 0x07; // IDE controller revision
     pci_conf[PCI_CLASS_PROG] = 0x8f;

     pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_IDE);
     pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type

     pci_conf[0x51] = 0x04; // enable IDE0
     if (d->secondary) {
         /* XXX: if not enabled, really disable the seconday IDE controller */
         pci_conf[0x51] |= 0x08; /* enable IDE1 */
     }

     pci_register_bar(dev, 0, 0x8, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
     pci_register_bar(dev, 1, 0x4, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
     pci_register_bar(dev, 2, 0x8, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
     pci_register_bar(dev, 3, 0x4, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
     pci_register_bar(dev, 4, 0x10, PCI_BASE_ADDRESS_SPACE_IO, bmdma_map);

     /* TODO: RST# value should be 0 */
     pci_conf[PCI_INTERRUPT_PIN] = 0x01; // interrupt on pin 1

     irq = qemu_allocate_irqs(cmd646_set_irq, d, 2);
     ide_bus_new(&d->bus[0], &d->dev.qdev);
     ide_bus_new(&d->bus[1], &d->dev.qdev);
     ide_init2(&d->bus[0], NULL, NULL, irq[0]);
     ide_init2(&d->bus[1], NULL, NULL, irq[1]);

     vmstate_register(0, &vmstate_ide_pci, d);
     qemu_register_reset(cmd646_reset, d);
     return 0;
 }

 void pci_cmd646_ide_init(PCIBus *bus, DriveInfo **hd_table,
                          int secondary_ide_enabled)
 {
     PCIDevice *dev;

     dev = pci_create(bus, -1, "cmd646-ide");
     qdev_prop_set_uint32(&dev->qdev, "secondary", secondary_ide_enabled);
     qdev_init_nofail(&dev->qdev);

     pci_ide_create_devs(dev, hd_table);
 }

 static PCIDeviceInfo cmd646_ide_info[] = {
     {
         .qdev.name    = "cmd646-ide",
         .qdev.size    = sizeof(PCIIDEState),
         .init         = pci_cmd646_ide_initfn,
         .qdev.props   = (Property[]) {
             DEFINE_PROP_UINT32("secondary", PCIIDEState, secondary, 0),
             DEFINE_PROP_END_OF_LIST(),
         },
     },{
         /* end of list */
     }
 };

 static void cmd646_ide_register(void)
 {
     pci_qdev_register_many(cmd646_ide_info);
 }
 device_init(cmd646_ide_register);
	/*
	* QEMU IDE Emulation: PCI cmd646 support.
	*
	* Copyright (c) 2003 Fabrice Bellard
	* Copyright (c) 2006 Openedhand Ltd.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this software and associated documentation files (the "Software"), to deal
	* in the Software without restriction, including without limitation the rights
	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	* copies of the Software, and to permit persons to whom the Software is
	* furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	* THE SOFTWARE.
	*/
	#include <hw/hw.h>
	#include <hw/pc.h>
	#include <hw/pci.h>
	#include <hw/isa.h>
	#include "block.h"
	#include "block_int.h"
	#include "sysemu.h"
	#include "dma.h"

	#include <hw/ide/pci.h>

	/* CMD646 specific */
	#define MRDMODE 0x71
	#define MRDMODE_INTR_CH0 0x04
	#define MRDMODE_INTR_CH1 0x08
	#define MRDMODE_BLK_CH0 0x10
	#define MRDMODE_BLK_CH1 0x20
	#define UDIDETCR0 0x73
	#define UDIDETCR1 0x7B

	static void cmd646_update_irq(PCIIDEState *d);

	static void ide_map(PCIDevice *pci_dev, int region_num,
	pcibus_t addr, pcibus_t size, int type)
	{
	PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
	IDEBus *bus;

	if (region_num <= 3) {
	bus = &d->bus[(region_num >> 1)];
	if (region_num & 1) {
	register_ioport_read(addr + 2, 1, 1, ide_status_read, bus);
	register_ioport_write(addr + 2, 1, 1, ide_cmd_write, bus);
	} else {
	register_ioport_write(addr, 8, 1, ide_ioport_write, bus);
	register_ioport_read(addr, 8, 1, ide_ioport_read, bus);

	/* data ports */
	register_ioport_write(addr, 2, 2, ide_data_writew, bus);
	register_ioport_read(addr, 2, 2, ide_data_readw, bus);
	register_ioport_write(addr, 4, 4, ide_data_writel, bus);
	register_ioport_read(addr, 4, 4, ide_data_readl, bus);
	}
	}
	}

	static uint32_t bmdma_readb_common(PCIIDEState pci_dev, BMDMAState bm,
	uint32_t addr)
	{
	uint32_t val;

	switch(addr & 3) {
	case 0:
	val = bm->cmd;
	break;
	case 1:
	val = pci_dev->dev.config[MRDMODE];
	break;
	case 2:
	val = bm->status;
	break;
	case 3:
	if (bm == &pci_dev->bmdma[0]) {
	val = pci_dev->dev.config[UDIDETCR0];
	} else {
	val = pci_dev->dev.config[UDIDETCR1];
	}
	break;
	default:
	val = 0xff;
	break;
	}
	#ifdef DEBUG_IDE
	printf("bmdma: readb 0x%02x : 0x%02x\n", addr, val);
	#endif
	return val;
	}

	static uint32_t bmdma_readb_0(void *opaque, uint32_t addr)
	{
	PCIIDEState *pci_dev = opaque;
	BMDMAState *bm = &pci_dev->bmdma[0];

	return bmdma_readb_common(pci_dev, bm, addr);
	}

	static uint32_t bmdma_readb_1(void *opaque, uint32_t addr)
	{
	PCIIDEState *pci_dev = opaque;
	BMDMAState *bm = &pci_dev->bmdma[1];

	return bmdma_readb_common(pci_dev, bm, addr);
	}

	static void bmdma_writeb_common(PCIIDEState pci_dev, BMDMAState bm,
	uint32_t addr, uint32_t val)
	{
	#ifdef DEBUG_IDE
	printf("bmdma: writeb 0x%02x : 0x%02x\n", addr, val);
	#endif
	switch(addr & 3) {
	case 0:
	bmdma_cmd_writeb(bm, addr, val);
	break;
	case 1:
	pci_dev->dev.config[MRDMODE] =
	(pci_dev->dev.config[MRDMODE] & ~0x30) \| (val & 0x30);
	cmd646_update_irq(pci_dev);
	break;
	case 2:
	bm->status = (val & 0x60) \| (bm->status & 1) \| (bm->status & ~val & 0x06);
	break;
	case 3:
	if (bm == &pci_dev->bmdma[0])
	pci_dev->dev.config[UDIDETCR0] = val;
	else
	pci_dev->dev.config[UDIDETCR1] = val;
	break;
	}
	}

	static void bmdma_writeb_0(void *opaque, uint32_t addr, uint32_t val)
	{
	PCIIDEState *pci_dev = opaque;
	BMDMAState *bm = &pci_dev->bmdma[0];

	bmdma_writeb_common(pci_dev, bm, addr, val);
	}

	static void bmdma_writeb_1(void *opaque, uint32_t addr, uint32_t val)
	{
	PCIIDEState *pci_dev = opaque;
	BMDMAState *bm = &pci_dev->bmdma[1];

	bmdma_writeb_common(pci_dev, bm, addr, val);
	}

	static void bmdma_map(PCIDevice *pci_dev, int region_num,
	pcibus_t addr, pcibus_t size, int type)
	{
	PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
	int i;

	for(i = 0;i < 2; i++) {
	BMDMAState *bm = &d->bmdma[i];
	d->bus[i].bmdma = bm;
	bm->bus = d->bus+i;
	qemu_add_vm_change_state_handler(ide_dma_restart_cb, bm);

	if (i == 0) {
	register_ioport_write(addr, 4, 1, bmdma_writeb_0, d);
	register_ioport_read(addr, 4, 1, bmdma_readb_0, d);
	} else {
	register_ioport_write(addr, 4, 1, bmdma_writeb_1, d);
	register_ioport_read(addr, 4, 1, bmdma_readb_1, d);
	}

	register_ioport_write(addr + 4, 4, 1, bmdma_addr_writeb, bm);
	register_ioport_read(addr + 4, 4, 1, bmdma_addr_readb, bm);
	register_ioport_write(addr + 4, 4, 2, bmdma_addr_writew, bm);
	register_ioport_read(addr + 4, 4, 2, bmdma_addr_readw, bm);
	register_ioport_write(addr + 4, 4, 4, bmdma_addr_writel, bm);
	register_ioport_read(addr + 4, 4, 4, bmdma_addr_readl, bm);
	addr += 8;
	}
	}

	/* XXX: call it also when the MRDMODE is changed from the PCI config
	registers */
	static void cmd646_update_irq(PCIIDEState *d)
	{
	int pci_level;
	pci_level = ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH0) &&
	!(d->dev.config[MRDMODE] & MRDMODE_BLK_CH0)) \|\|
	((d->dev.config[MRDMODE] & MRDMODE_INTR_CH1) &&
	!(d->dev.config[MRDMODE] & MRDMODE_BLK_CH1));
	qemu_set_irq(d->dev.irq[0], pci_level);
	}

	/* the PCI irq level is the logical OR of the two channels */
	static void cmd646_set_irq(void *opaque, int channel, int level)
	{
	PCIIDEState *d = opaque;
	int irq_mask;

	irq_mask = MRDMODE_INTR_CH0 << channel;
	if (level)
	d->dev.config[MRDMODE] \|= irq_mask;
	else
	d->dev.config[MRDMODE] &= ~irq_mask;
	cmd646_update_irq(d);
	}

	static void cmd646_reset(void *opaque)
	{
	PCIIDEState *d = opaque;
	unsigned int i;

	for (i = 0; i < 2; i++) {
	ide_bus_reset(&d->bus[i]);
	ide_dma_reset(&d->bmdma[i]);
	}
	}

	/* CMD646 PCI IDE controller */
	static int pci_cmd646_ide_initfn(PCIDevice *dev)
	{
	PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
	uint8_t *pci_conf = d->dev.config;
	qemu_irq *irq;

	pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_CMD);
	pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_CMD_646);

	pci_conf[PCI_REVISION_ID] = 0x07; // IDE controller revision
	pci_conf[PCI_CLASS_PROG] = 0x8f;

	pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_IDE);
	pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type

	pci_conf[0x51] = 0x04; // enable IDE0
	if (d->secondary) {
	/* XXX: if not enabled, really disable the seconday IDE controller */
	pci_conf[0x51] \|= 0x08; /* enable IDE1 */
	}

	pci_register_bar(dev, 0, 0x8, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
	pci_register_bar(dev, 1, 0x4, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
	pci_register_bar(dev, 2, 0x8, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
	pci_register_bar(dev, 3, 0x4, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
	pci_register_bar(dev, 4, 0x10, PCI_BASE_ADDRESS_SPACE_IO, bmdma_map);

	/* TODO: RST# value should be 0 */
	pci_conf[PCI_INTERRUPT_PIN] = 0x01; // interrupt on pin 1

	irq = qemu_allocate_irqs(cmd646_set_irq, d, 2);
	ide_bus_new(&d->bus[0], &d->dev.qdev);
	ide_bus_new(&d->bus[1], &d->dev.qdev);
	ide_init2(&d->bus[0], NULL, NULL, irq[0]);
	ide_init2(&d->bus[1], NULL, NULL, irq[1]);

	vmstate_register(0, &vmstate_ide_pci, d);
	qemu_register_reset(cmd646_reset, d);
	return 0;
	}

	void pci_cmd646_ide_init(PCIBus bus, DriveInfo *hd_table,
	int secondary_ide_enabled)
	{
	PCIDevice *dev;

	dev = pci_create(bus, -1, "cmd646-ide");
	qdev_prop_set_uint32(&dev->qdev, "secondary", secondary_ide_enabled);
	qdev_init_nofail(&dev->qdev);

	pci_ide_create_devs(dev, hd_table);
	}

	static PCIDeviceInfo cmd646_ide_info[] = {
	{
	.qdev.name = "cmd646-ide",
	.qdev.size = sizeof(PCIIDEState),
	.init = pci_cmd646_ide_initfn,
	.qdev.props = (Property[]) {
	DEFINE_PROP_UINT32("secondary", PCIIDEState, secondary, 0),
	DEFINE_PROP_END_OF_LIST(),
	},
	},{
	/* end of list */
	}
	};

	static void cmd646_ide_register(void)
	{
	pci_qdev_register_many(cmd646_ide_info);
	}
	device_init(cmd646_ide_register);