From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:47565) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SxCuS-0001As-Sv for qemu-devel@nongnu.org; Fri, 03 Aug 2012 04:07:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SxCuR-0007D4-7u for qemu-devel@nongnu.org; Fri, 03 Aug 2012 04:07:00 -0400 Received: from mail-yx0-f173.google.com ([209.85.213.173]:43803) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SxCuR-0006jn-2Q for qemu-devel@nongnu.org; Fri, 03 Aug 2012 04:06:59 -0400 Received: by mail-yx0-f173.google.com with SMTP id l1so500907yen.4 for ; Fri, 03 Aug 2012 01:06:59 -0700 (PDT) Sender: Paolo Bonzini From: Paolo Bonzini Date: Fri, 3 Aug 2012 10:06:19 +0200 Message-Id: <1343981180-23817-10-git-send-email-pbonzini@redhat.com> In-Reply-To: <1343981180-23817-1-git-send-email-pbonzini@redhat.com> References: <1343981180-23817-1-git-send-email-pbonzini@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH 09/10] esp: add Tekram DC-390 emulation (PC SCSI adapter) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Herv=C3=A9=20Poussineau?= From: Hervé Poussineau Difference with AMD PCscsi is that DC-390 contains a EEPROM. This has been successfully tested on: - MS DOS 6.22 (using DC390 ASPI driver) - MS Windows 98 SE (using DC390 driver) - MS Windows NT 3.1 (using DC390 driver) - MS Windows NT 4.0 (using DC390 driver) - hard disk and cdrom boot Signed-off-by: Hervé Poussineau Signed-off-by: Paolo Bonzini --- hw/esp.c | 126 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 125 insertions(+), 1 deletion(-) diff --git a/hw/esp.c b/hw/esp.c index 77f5707..0bdc8be 100644 --- a/hw/esp.c +++ b/hw/esp.c @@ -26,6 +26,7 @@ #include "sysbus.h" #include "pci.h" #include "scsi.h" +#include "eeprom93xx.h" #include "esp.h" #include "trace.h" #include "qemu-log.h" @@ -823,6 +824,9 @@ static const TypeInfo sysbus_esp_info = { .class_init = sysbus_esp_class_init, }; + +#define TYPE_AM53C974_DEVICE "am53c974" + #define DMA_CMD 0x0 #define DMA_STC 0x1 #define DMA_SPA 0x2 @@ -1177,16 +1181,136 @@ static void esp_pci_class_init(ObjectClass *klass, void *data) } static const TypeInfo esp_pci_info = { - .name = "am53c974", + .name = TYPE_AM53C974_DEVICE, .parent = TYPE_PCI_DEVICE, .instance_size = sizeof(PCIESPState), .class_init = esp_pci_class_init, }; +typedef struct { + PCIESPState pci; + eeprom_t *eeprom; +} DC390State; + +#define TYPE_DC390_DEVICE "dc390" +#define DC390(obj) \ + OBJECT_CHECK(DC390State, obj, TYPE_DC390_DEVICE) + +#define EE_ADAPT_SCSI_ID 64 +#define EE_MODE2 65 +#define EE_DELAY 66 +#define EE_TAG_CMD_NUM 67 +#define EE_ADAPT_OPTIONS 68 +#define EE_BOOT_SCSI_ID 69 +#define EE_BOOT_SCSI_LUN 70 +#define EE_CHKSUM1 126 +#define EE_CHKSUM2 127 + +#define EE_ADAPT_OPTION_F6_F8_AT_BOOT 0x01 +#define EE_ADAPT_OPTION_BOOT_FROM_CDROM 0x02 +#define EE_ADAPT_OPTION_INT13 0x04 +#define EE_ADAPT_OPTION_SCAM_SUPPORT 0x08 + + +static uint32_t dc390_read_config(PCIDevice *dev, uint32_t addr, int l) +{ + DC390State *pci = DC390(dev); + uint32_t val; + + val = pci_default_read_config(dev, addr, l); + + if (addr == 0x00 && l == 1) { + /* First byte of address space is AND-ed with EEPROM DO line */ + if (!eeprom93xx_read(pci->eeprom)) { + val &= ~0xff; + } + } + + return val; +} + +static void dc390_write_config(PCIDevice *dev, + uint32_t addr, uint32_t val, int l) +{ + DC390State *pci = DC390(dev); + if (addr == 0x80) { + /* EEPROM write */ + int eesk = val & 0x80 ? 1 : 0; + int eedi = val & 0x40 ? 1 : 0; + eeprom93xx_write(pci->eeprom, 1, eesk, eedi); + } else if (addr == 0xc0) { + /* EEPROM CS low */ + eeprom93xx_write(pci->eeprom, 0, 0, 0); + } else { + pci_default_write_config(dev, addr, val, l); + } +} + +static int dc390_scsi_init(PCIDevice *dev) +{ + DC390State *pci = DC390(dev); + uint8_t *contents; + uint16_t chksum = 0; + int i, ret; + + /* init base class */ + ret = esp_pci_scsi_init(dev); + if (ret < 0) { + return ret; + } + + /* EEPROM */ + pci->eeprom = eeprom93xx_new(DEVICE(dev), 64); + + /* set default eeprom values */ + contents = (uint8_t *)eeprom93xx_data(pci->eeprom); + + for (i = 0; i < 16; i++) { + contents[i * 2] = 0x57; + contents[i * 2 + 1] = 0x00; + } + contents[EE_ADAPT_SCSI_ID] = 7; + contents[EE_MODE2] = 0x0f; + contents[EE_TAG_CMD_NUM] = 0x04; + contents[EE_ADAPT_OPTIONS] = EE_ADAPT_OPTION_F6_F8_AT_BOOT + | EE_ADAPT_OPTION_BOOT_FROM_CDROM + | EE_ADAPT_OPTION_INT13; + + /* update eeprom checksum */ + for (i = 0; i < EE_CHKSUM1; i += 2) { + chksum += contents[i] + (((uint16_t)contents[i + 1]) << 8); + } + chksum = 0x1234 - chksum; + contents[EE_CHKSUM1] = chksum & 0xff; + contents[EE_CHKSUM2] = chksum >> 8; + + return 0; +} + +static void dc390_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->init = dc390_scsi_init; + k->config_read = dc390_read_config; + k->config_write = dc390_write_config; + dc->desc = "Tekram DC-390 SCSI adapter"; +} + +static const TypeInfo dc390_info = { + .name = "dc390", + .parent = TYPE_AM53C974_DEVICE, + .instance_size = sizeof(DC390State), + .class_init = dc390_class_init, +}; + + static void esp_register_types(void) { type_register_static(&sysbus_esp_info); type_register_static(&esp_pci_info); + type_register_static(&dc390_info); } type_init(esp_register_types) -- 1.7.10.4