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[Qemu-devel] [PATCH v3 2/4] esp: move PCI emulation to a new file esp-pc
|
From: |
Hervé Poussineau |
|
Subject: |
[Qemu-devel] [PATCH v3 2/4] esp: move PCI emulation to a new file esp-pci.c |
|
Date: |
Sat, 4 Aug 2012 21:10:04 +0200 |
sparc machines loose ability to instanciate PCI ESP SCSI adapter,
which is not a big loose as they don't have PCI bus support.
Signed-off-by: Hervé Poussineau <address@hidden>
---
default-configs/pci.mak | 1 +
hw/Makefile.objs | 1 +
hw/esp-pci.c | 396 +++++++++++++++++++++++++++++++++++++++++++++++
hw/esp.c | 362 -------------------------------------------
4 files changed, 398 insertions(+), 362 deletions(-)
create mode 100644 hw/esp-pci.c
diff --git a/default-configs/pci.mak b/default-configs/pci.mak
index 9febb47..69e18f1 100644
--- a/default-configs/pci.mak
+++ b/default-configs/pci.mak
@@ -18,3 +18,4 @@ CONFIG_IDE_QDEV=y
CONFIG_IDE_PCI=y
CONFIG_AHCI=y
CONFIG_ESP=y
+CONFIG_ESP_PCI=y
diff --git a/hw/Makefile.objs b/hw/Makefile.objs
index 8327e55..12cc141 100644
--- a/hw/Makefile.objs
+++ b/hw/Makefile.objs
@@ -88,6 +88,7 @@ hw-obj-$(CONFIG_OPENCORES_ETH) += opencores_eth.o
hw-obj-$(CONFIG_LSI_SCSI_PCI) += lsi53c895a.o
hw-obj-$(CONFIG_MEGASAS_SCSI_PCI) += megasas.o
hw-obj-$(CONFIG_ESP) += esp.o
+hw-obj-$(CONFIG_ESP_PCI) += esp-pci.o
hw-obj-y += sysbus.o isa-bus.o
hw-obj-y += qdev-addr.o
diff --git a/hw/esp-pci.c b/hw/esp-pci.c
new file mode 100644
index 0000000..f633a18
--- /dev/null
+++ b/hw/esp-pci.c
@@ -0,0 +1,396 @@
+/*
+ * QEMU ESP/NCR53C9x emulation
+ *
+ * Copyright (c) 2005-2006 Fabrice Bellard
+ * Copyright (c) 2012 Herve Poussineau
+ *
+ * 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 "pci.h"
+#include "esp.h"
+#include "trace.h"
+#include "qemu-log.h"
+
+#define DMA_CMD 0x0
+#define DMA_STC 0x1
+#define DMA_SPA 0x2
+#define DMA_WBC 0x3
+#define DMA_WAC 0x4
+#define DMA_STAT 0x5
+#define DMA_SMDLA 0x6
+#define DMA_WMAC 0x7
+
+#define DMA_CMD_MASK 0x03
+#define DMA_CMD_DIAG 0x04
+#define DMA_CMD_MDL 0x10
+#define DMA_CMD_INTE_P 0x20
+#define DMA_CMD_INTE_D 0x40
+#define DMA_CMD_DIR 0x80
+
+#define DMA_STAT_PWDN 0x01
+#define DMA_STAT_ERROR 0x02
+#define DMA_STAT_ABORT 0x04
+#define DMA_STAT_DONE 0x08
+#define DMA_STAT_SCSIINT 0x10
+#define DMA_STAT_BCMBLT 0x20
+
+#define SBAC_STATUS 0x1000
+
+typedef struct PCIESPState {
+ PCIDevice dev;
+ MemoryRegion io;
+ uint32_t dma_regs[8];
+ uint32_t sbac;
+ ESPState esp;
+} PCIESPState;
+
+static void esp_pci_handle_idle(PCIESPState *pci, uint32_t val)
+{
+ trace_esp_pci_dma_idle(val);
+ esp_dma_enable(&pci->esp, 0, 0);
+}
+
+static void esp_pci_handle_blast(PCIESPState *pci, uint32_t val)
+{
+ trace_esp_pci_dma_blast(val);
+ qemu_log_mask(LOG_UNIMP, "am53c974: cmd BLAST not implemented\n");
+}
+
+static void esp_pci_handle_abort(PCIESPState *pci, uint32_t val)
+{
+ trace_esp_pci_dma_abort(val);
+ if (pci->esp.current_req) {
+ scsi_req_cancel(pci->esp.current_req);
+ }
+}
+
+static void esp_pci_handle_start(PCIESPState *pci, uint32_t val)
+{
+ trace_esp_pci_dma_start(val);
+
+ pci->dma_regs[DMA_WBC] = pci->dma_regs[DMA_STC];
+ pci->dma_regs[DMA_WAC] = pci->dma_regs[DMA_SPA];
+ pci->dma_regs[DMA_WMAC] = pci->dma_regs[DMA_SMDLA];
+
+ pci->dma_regs[DMA_STAT] &= ~(DMA_STAT_BCMBLT | DMA_STAT_SCSIINT
+ | DMA_STAT_DONE | DMA_STAT_ABORT
+ | DMA_STAT_ERROR | DMA_STAT_PWDN);
+
+ esp_dma_enable(&pci->esp, 0, 1);
+}
+
+static void esp_pci_dma_write(PCIESPState *pci, uint32_t saddr, uint32_t val)
+{
+ trace_esp_pci_dma_write(saddr, pci->dma_regs[saddr], val);
+ switch (saddr) {
+ case DMA_CMD:
+ pci->dma_regs[saddr] = val;
+ switch (val & DMA_CMD_MASK) {
+ case 0x0: /* IDLE */
+ esp_pci_handle_idle(pci, val);
+ break;
+ case 0x1: /* BLAST */
+ esp_pci_handle_blast(pci, val);
+ break;
+ case 0x2: /* ABORT */
+ esp_pci_handle_abort(pci, val);
+ break;
+ case 0x3: /* START */
+ esp_pci_handle_start(pci, val);
+ break;
+ default: /* can't happen */
+ abort();
+ }
+ break;
+ case DMA_STC:
+ case DMA_SPA:
+ case DMA_SMDLA:
+ pci->dma_regs[saddr] = val;
+ break;
+ case DMA_STAT:
+ if (!(pci->sbac & SBAC_STATUS)) {
+ /* clear some bits on write */
+ uint32_t mask = DMA_STAT_ERROR | DMA_STAT_ABORT | DMA_STAT_DONE;
+ pci->dma_regs[DMA_STAT] &= ~(val & mask);
+ }
+ break;
+ default:
+ trace_esp_pci_error_invalid_write_dma(val, saddr);
+ return;
+ }
+}
+
+static uint32_t esp_pci_dma_read(PCIESPState *pci, uint32_t saddr)
+{
+ uint32_t val;
+
+ val = pci->dma_regs[saddr];
+ if (saddr == DMA_STAT) {
+ if (pci->esp.rregs[ESP_RSTAT] & STAT_INT) {
+ val |= DMA_STAT_SCSIINT;
+ }
+ if (pci->sbac & SBAC_STATUS) {
+ pci->dma_regs[DMA_STAT] &= ~(DMA_STAT_ERROR | DMA_STAT_ABORT |
+ DMA_STAT_DONE);
+ }
+ }
+
+ trace_esp_pci_dma_read(saddr, val);
+ return val;
+}
+
+static void esp_pci_io_write(void *opaque, target_phys_addr_t addr,
+ uint64_t val, unsigned int size)
+{
+ PCIESPState *pci = opaque;
+
+ if (size < 4 || addr & 3) {
+ /* need to upgrade request: we only support 4-bytes accesses */
+ uint32_t current = 0, mask;
+ int shift;
+
+ if (addr < 0x40) {
+ current = pci->esp.wregs[addr >> 2];
+ } else if (addr < 0x60) {
+ current = pci->dma_regs[(addr - 0x40) >> 2];
+ } else if (addr < 0x74) {
+ current = pci->sbac;
+ }
+
+ shift = (4 - size) * 8;
+ mask = (~(uint32_t)0 << shift) >> shift;
+
+ shift = ((4 - (addr & 3)) & 3) * 8;
+ val <<= shift;
+ val |= current & ~(mask << shift);
+ addr &= ~3;
+ size = 4;
+ }
+
+ if (addr < 0x40) {
+ /* SCSI core reg */
+ esp_reg_write(&pci->esp, addr >> 2, val);
+ } else if (addr < 0x60) {
+ /* PCI DMA CCB */
+ esp_pci_dma_write(pci, (addr - 0x40) >> 2, val);
+ } else if (addr == 0x70) {
+ /* DMA SCSI Bus and control */
+ trace_esp_pci_sbac_write(pci->sbac, val);
+ pci->sbac = val;
+ } else {
+ trace_esp_pci_error_invalid_write((int)addr);
+ }
+}
+
+static uint64_t esp_pci_io_read(void *opaque, target_phys_addr_t addr,
+ unsigned int size)
+{
+ PCIESPState *pci = opaque;
+ uint32_t ret;
+
+ if (addr < 0x40) {
+ /* SCSI core reg */
+ ret = esp_reg_read(&pci->esp, addr >> 2);
+ } else if (addr < 0x60) {
+ /* PCI DMA CCB */
+ ret = esp_pci_dma_read(pci, (addr - 0x40) >> 2);
+ } else if (addr == 0x70) {
+ /* DMA SCSI Bus and control */
+ trace_esp_pci_sbac_read(pci->sbac);
+ ret = pci->sbac;
+ } else {
+ /* Invalid region */
+ trace_esp_pci_error_invalid_read((int)addr);
+ ret = 0;
+ }
+
+ /* give only requested data */
+ ret >>= (addr & 3) * 8;
+ ret &= ~(~(uint64_t)0 << (8 * size));
+
+ return ret;
+}
+
+static void esp_pci_dma_memory_rw(PCIESPState *pci, uint8_t *buf, int len,
+ DMADirection dir)
+{
+ dma_addr_t addr;
+ DMADirection expected_dir;
+
+ if (pci->dma_regs[DMA_CMD] & DMA_CMD_DIR) {
+ expected_dir = DMA_DIRECTION_FROM_DEVICE;
+ } else {
+ expected_dir = DMA_DIRECTION_TO_DEVICE;
+ }
+
+ if (dir != expected_dir) {
+ trace_esp_pci_error_invalid_dma_direction();
+ return;
+ }
+
+ if (pci->dma_regs[DMA_STAT] & DMA_CMD_MDL) {
+ qemu_log_mask(LOG_UNIMP, "am53c974: MDL transfer not implemented\n");
+ }
+
+ addr = pci->dma_regs[DMA_SPA];
+ if (pci->dma_regs[DMA_WBC] < len) {
+ len = pci->dma_regs[DMA_WBC];
+ }
+
+ pci_dma_rw(&pci->dev, addr, buf, len, dir);
+
+ /* update status registers */
+ pci->dma_regs[DMA_WBC] -= len;
+ pci->dma_regs[DMA_WAC] += len;
+}
+
+static void esp_pci_dma_memory_read(void *opaque, uint8_t *buf, int len)
+{
+ PCIESPState *pci = opaque;
+ esp_pci_dma_memory_rw(pci, buf, len, DMA_DIRECTION_TO_DEVICE);
+}
+
+static void esp_pci_dma_memory_write(void *opaque, uint8_t *buf, int len)
+{
+ PCIESPState *pci = opaque;
+ esp_pci_dma_memory_rw(pci, buf, len, DMA_DIRECTION_FROM_DEVICE);
+}
+
+static const MemoryRegionOps esp_pci_io_ops = {
+ .read = esp_pci_io_read,
+ .write = esp_pci_io_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 4,
+ },
+};
+
+static void esp_pci_hard_reset(DeviceState *dev)
+{
+ PCIESPState *pci = DO_UPCAST(PCIESPState, dev.qdev, dev);
+ esp_hard_reset(&pci->esp);
+ pci->dma_regs[DMA_CMD] &= ~(DMA_CMD_DIR | DMA_CMD_INTE_D | DMA_CMD_INTE_P
+ | DMA_CMD_MDL | DMA_CMD_DIAG | DMA_CMD_MASK);
+ pci->dma_regs[DMA_WBC] &= ~0xffff;
+ pci->dma_regs[DMA_WAC] = 0xffffffff;
+ pci->dma_regs[DMA_STAT] &= ~(DMA_STAT_BCMBLT | DMA_STAT_SCSIINT
+ | DMA_STAT_DONE | DMA_STAT_ABORT
+ | DMA_STAT_ERROR);
+ pci->dma_regs[DMA_WMAC] = 0xfffffffd;
+}
+
+static const VMStateDescription vmstate_esp_pci_scsi = {
+ .name = "pciespscsi",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_PCI_DEVICE(dev, PCIESPState),
+ VMSTATE_BUFFER_UNSAFE(dma_regs, PCIESPState, 0, 8 * sizeof(uint32_t)),
+ VMSTATE_STRUCT(esp, PCIESPState, 0, vmstate_esp, ESPState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void esp_pci_command_complete(SCSIRequest *req, uint32_t status,
+ size_t resid)
+{
+ ESPState *s = req->hba_private;
+ PCIESPState *pci = container_of(s, PCIESPState, esp);
+
+ esp_command_complete(req, status, resid);
+ pci->dma_regs[DMA_WBC] = 0;
+ pci->dma_regs[DMA_STAT] |= DMA_STAT_DONE;
+}
+
+static const struct SCSIBusInfo esp_pci_scsi_info = {
+ .tcq = false,
+ .max_target = ESP_MAX_DEVS,
+ .max_lun = 7,
+
+ .transfer_data = esp_transfer_data,
+ .complete = esp_pci_command_complete,
+ .cancel = esp_request_cancelled,
+};
+
+static int esp_pci_scsi_init(PCIDevice *dev)
+{
+ PCIESPState *pci = DO_UPCAST(PCIESPState, dev, dev);
+ ESPState *s = &pci->esp;
+ uint8_t *pci_conf;
+
+ pci_conf = pci->dev.config;
+
+ /* Interrupt pin A */
+ pci_conf[PCI_INTERRUPT_PIN] = 0x01;
+
+ s->dma_memory_read = esp_pci_dma_memory_read;
+ s->dma_memory_write = esp_pci_dma_memory_write;
+ s->dma_opaque = pci;
+ s->chip_id = TCHI_AM53C974;
+ memory_region_init_io(&pci->io, &esp_pci_io_ops, pci, "esp-io", 0x80);
+
+ pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &pci->io);
+ s->irq = pci->dev.irq[0];
+
+ scsi_bus_new(&s->bus, &dev->qdev, &esp_pci_scsi_info);
+ if (!dev->qdev.hotplugged) {
+ return scsi_bus_legacy_handle_cmdline(&s->bus);
+ }
+ return 0;
+}
+
+static void esp_pci_scsi_uninit(PCIDevice *d)
+{
+ PCIESPState *pci = DO_UPCAST(PCIESPState, dev, d);
+
+ memory_region_destroy(&pci->io);
+}
+
+static void esp_pci_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+ k->init = esp_pci_scsi_init;
+ k->exit = esp_pci_scsi_uninit;
+ k->vendor_id = PCI_VENDOR_ID_AMD;
+ k->device_id = PCI_DEVICE_ID_AMD_SCSI;
+ k->revision = 0x10;
+ k->class_id = PCI_CLASS_STORAGE_SCSI;
+ dc->desc = "AMD Am53c974 PCscsi-PCI SCSI adapter";
+ dc->reset = esp_pci_hard_reset;
+ dc->vmsd = &vmstate_esp_pci_scsi;
+}
+
+static const TypeInfo esp_pci_info = {
+ .name = "am53c974",
+ .parent = TYPE_PCI_DEVICE,
+ .instance_size = sizeof(PCIESPState),
+ .class_init = esp_pci_class_init,
+};
+
+static void esp_pci_register_types(void)
+{
+ type_register_static(&esp_pci_info);
+}
+
+type_init(esp_pci_register_types)
diff --git a/hw/esp.c b/hw/esp.c
index 60c2221..52c46e6 100644
--- a/hw/esp.c
+++ b/hw/esp.c
@@ -24,7 +24,6 @@
*/
#include "sysbus.h"
-#include "pci.h"
#include "esp.h"
#include "trace.h"
#include "qemu-log.h"
@@ -714,370 +713,9 @@ static const TypeInfo sysbus_esp_info = {
.class_init = sysbus_esp_class_init,
};
-#define DMA_CMD 0x0
-#define DMA_STC 0x1
-#define DMA_SPA 0x2
-#define DMA_WBC 0x3
-#define DMA_WAC 0x4
-#define DMA_STAT 0x5
-#define DMA_SMDLA 0x6
-#define DMA_WMAC 0x7
-
-#define DMA_CMD_MASK 0x03
-#define DMA_CMD_DIAG 0x04
-#define DMA_CMD_MDL 0x10
-#define DMA_CMD_INTE_P 0x20
-#define DMA_CMD_INTE_D 0x40
-#define DMA_CMD_DIR 0x80
-
-#define DMA_STAT_PWDN 0x01
-#define DMA_STAT_ERROR 0x02
-#define DMA_STAT_ABORT 0x04
-#define DMA_STAT_DONE 0x08
-#define DMA_STAT_SCSIINT 0x10
-#define DMA_STAT_BCMBLT 0x20
-
-#define SBAC_STATUS 0x1000
-
-typedef struct PCIESPState {
- PCIDevice dev;
- MemoryRegion io;
- uint32_t dma_regs[8];
- uint32_t sbac;
- ESPState esp;
-} PCIESPState;
-
-static void esp_pci_handle_idle(PCIESPState *pci, uint32_t val)
-{
- trace_esp_pci_dma_idle(val);
- esp_dma_enable(&pci->esp, 0, 0);
-}
-
-static void esp_pci_handle_blast(PCIESPState *pci, uint32_t val)
-{
- trace_esp_pci_dma_blast(val);
- qemu_log_mask(LOG_UNIMP, "am53c974: cmd BLAST not implemented\n");
-}
-
-static void esp_pci_handle_abort(PCIESPState *pci, uint32_t val)
-{
- trace_esp_pci_dma_abort(val);
- if (pci->esp.current_req) {
- scsi_req_cancel(pci->esp.current_req);
- }
-}
-
-static void esp_pci_handle_start(PCIESPState *pci, uint32_t val)
-{
- trace_esp_pci_dma_start(val);
-
- pci->dma_regs[DMA_WBC] = pci->dma_regs[DMA_STC];
- pci->dma_regs[DMA_WAC] = pci->dma_regs[DMA_SPA];
- pci->dma_regs[DMA_WMAC] = pci->dma_regs[DMA_SMDLA];
-
- pci->dma_regs[DMA_STAT] &= ~(DMA_STAT_BCMBLT | DMA_STAT_SCSIINT
- | DMA_STAT_DONE | DMA_STAT_ABORT
- | DMA_STAT_ERROR | DMA_STAT_PWDN);
-
- esp_dma_enable(&pci->esp, 0, 1);
-}
-
-static void esp_pci_dma_write(PCIESPState *pci, uint32_t saddr, uint32_t val)
-{
- trace_esp_pci_dma_write(saddr, pci->dma_regs[saddr], val);
- switch (saddr) {
- case DMA_CMD:
- pci->dma_regs[saddr] = val;
- switch (val & DMA_CMD_MASK) {
- case 0x0: /* IDLE */
- esp_pci_handle_idle(pci, val);
- break;
- case 0x1: /* BLAST */
- esp_pci_handle_blast(pci, val);
- break;
- case 0x2: /* ABORT */
- esp_pci_handle_abort(pci, val);
- break;
- case 0x3: /* START */
- esp_pci_handle_start(pci, val);
- break;
- default: /* can't happen */
- abort();
- }
- break;
- case DMA_STC:
- case DMA_SPA:
- case DMA_SMDLA:
- pci->dma_regs[saddr] = val;
- break;
- case DMA_STAT:
- if (!(pci->sbac & SBAC_STATUS)) {
- /* clear some bits on write */
- uint32_t mask = DMA_STAT_ERROR | DMA_STAT_ABORT | DMA_STAT_DONE;
- pci->dma_regs[DMA_STAT] &= ~(val & mask);
- }
- break;
- default:
- trace_esp_pci_error_invalid_write_dma(val, saddr);
- return;
- }
-}
-
-static uint32_t esp_pci_dma_read(PCIESPState *pci, uint32_t saddr)
-{
- uint32_t val;
-
- val = pci->dma_regs[saddr];
- if (saddr == DMA_STAT) {
- if (pci->esp.rregs[ESP_RSTAT] & STAT_INT) {
- val |= DMA_STAT_SCSIINT;
- }
- if (pci->sbac & SBAC_STATUS) {
- pci->dma_regs[DMA_STAT] &= ~(DMA_STAT_ERROR | DMA_STAT_ABORT |
- DMA_STAT_DONE);
- }
- }
-
- trace_esp_pci_dma_read(saddr, val);
- return val;
-}
-
-static void esp_pci_io_write(void *opaque, target_phys_addr_t addr,
- uint64_t val, unsigned int size)
-{
- PCIESPState *pci = opaque;
-
- if (size < 4 || addr & 3) {
- /* need to upgrade request: we only support 4-bytes accesses */
- uint32_t current = 0, mask;
- int shift;
-
- if (addr < 0x40) {
- current = pci->esp.wregs[addr >> 2];
- } else if (addr < 0x60) {
- current = pci->dma_regs[(addr - 0x40) >> 2];
- } else if (addr < 0x74) {
- current = pci->sbac;
- }
-
- shift = (4 - size) * 8;
- mask = (~(uint32_t)0 << shift) >> shift;
-
- shift = ((4 - (addr & 3)) & 3) * 8;
- val <<= shift;
- val |= current & ~(mask << shift);
- addr &= ~3;
- size = 4;
- }
-
- if (addr < 0x40) {
- /* SCSI core reg */
- esp_reg_write(&pci->esp, addr >> 2, val);
- } else if (addr < 0x60) {
- /* PCI DMA CCB */
- esp_pci_dma_write(pci, (addr - 0x40) >> 2, val);
- } else if (addr == 0x70) {
- /* DMA SCSI Bus and control */
- trace_esp_pci_sbac_write(pci->sbac, val);
- pci->sbac = val;
- } else {
- trace_esp_pci_error_invalid_write((int)addr);
- }
-}
-
-static uint64_t esp_pci_io_read(void *opaque, target_phys_addr_t addr,
- unsigned int size)
-{
- PCIESPState *pci = opaque;
- uint32_t ret;
-
- if (addr < 0x40) {
- /* SCSI core reg */
- ret = esp_reg_read(&pci->esp, addr >> 2);
- } else if (addr < 0x60) {
- /* PCI DMA CCB */
- ret = esp_pci_dma_read(pci, (addr - 0x40) >> 2);
- } else if (addr == 0x70) {
- /* DMA SCSI Bus and control */
- trace_esp_pci_sbac_read(pci->sbac);
- ret = pci->sbac;
- } else {
- /* Invalid region */
- trace_esp_pci_error_invalid_read((int)addr);
- ret = 0;
- }
-
- /* give only requested data */
- ret >>= (addr & 3) * 8;
- ret &= ~(~(uint64_t)0 << (8 * size));
-
- return ret;
-}
-
-static void esp_pci_dma_memory_rw(PCIESPState *pci, uint8_t *buf, int len,
- DMADirection dir)
-{
- dma_addr_t addr;
- DMADirection expected_dir;
-
- if (pci->dma_regs[DMA_CMD] & DMA_CMD_DIR) {
- expected_dir = DMA_DIRECTION_FROM_DEVICE;
- } else {
- expected_dir = DMA_DIRECTION_TO_DEVICE;
- }
-
- if (dir != expected_dir) {
- trace_esp_pci_error_invalid_dma_direction();
- return;
- }
-
- if (pci->dma_regs[DMA_STAT] & DMA_CMD_MDL) {
- qemu_log_mask(LOG_UNIMP, "am53c974: MDL transfer not implemented\n");
- }
-
- addr = pci->dma_regs[DMA_SPA];
- if (pci->dma_regs[DMA_WBC] < len) {
- len = pci->dma_regs[DMA_WBC];
- }
-
- pci_dma_rw(&pci->dev, addr, buf, len, dir);
-
- /* update status registers */
- pci->dma_regs[DMA_WBC] -= len;
- pci->dma_regs[DMA_WAC] += len;
-}
-
-static void esp_pci_dma_memory_read(void *opaque, uint8_t *buf, int len)
-{
- PCIESPState *pci = opaque;
- esp_pci_dma_memory_rw(pci, buf, len, DMA_DIRECTION_TO_DEVICE);
-}
-
-static void esp_pci_dma_memory_write(void *opaque, uint8_t *buf, int len)
-{
- PCIESPState *pci = opaque;
- esp_pci_dma_memory_rw(pci, buf, len, DMA_DIRECTION_FROM_DEVICE);
-}
-
-static const MemoryRegionOps esp_pci_io_ops = {
- .read = esp_pci_io_read,
- .write = esp_pci_io_write,
- .endianness = DEVICE_LITTLE_ENDIAN,
- .impl = {
- .min_access_size = 1,
- .max_access_size = 4,
- },
-};
-
-static void esp_pci_hard_reset(DeviceState *dev)
-{
- PCIESPState *pci = DO_UPCAST(PCIESPState, dev.qdev, dev);
- esp_hard_reset(&pci->esp);
- pci->dma_regs[DMA_CMD] &= ~(DMA_CMD_DIR | DMA_CMD_INTE_D | DMA_CMD_INTE_P
- | DMA_CMD_MDL | DMA_CMD_DIAG | DMA_CMD_MASK);
- pci->dma_regs[DMA_WBC] &= ~0xffff;
- pci->dma_regs[DMA_WAC] = 0xffffffff;
- pci->dma_regs[DMA_STAT] &= ~(DMA_STAT_BCMBLT | DMA_STAT_SCSIINT
- | DMA_STAT_DONE | DMA_STAT_ABORT
- | DMA_STAT_ERROR);
- pci->dma_regs[DMA_WMAC] = 0xfffffffd;
-}
-
-static const VMStateDescription vmstate_esp_pci_scsi = {
- .name = "pciespscsi",
- .version_id = 0,
- .minimum_version_id = 0,
- .minimum_version_id_old = 0,
- .fields = (VMStateField[]) {
- VMSTATE_PCI_DEVICE(dev, PCIESPState),
- VMSTATE_BUFFER_UNSAFE(dma_regs, PCIESPState, 0, 8 * sizeof(uint32_t)),
- VMSTATE_STRUCT(esp, PCIESPState, 0, vmstate_esp, ESPState),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static void esp_pci_command_complete(SCSIRequest *req, uint32_t status,
- size_t resid)
-{
- ESPState *s = req->hba_private;
- PCIESPState *pci = container_of(s, PCIESPState, esp);
-
- esp_command_complete(req, status, resid);
- pci->dma_regs[DMA_WBC] = 0;
- pci->dma_regs[DMA_STAT] |= DMA_STAT_DONE;
-}
-
-static const struct SCSIBusInfo esp_pci_scsi_info = {
- .tcq = false,
- .max_target = ESP_MAX_DEVS,
- .max_lun = 7,
-
- .transfer_data = esp_transfer_data,
- .complete = esp_pci_command_complete,
- .cancel = esp_request_cancelled,
-};
-
-static int esp_pci_scsi_init(PCIDevice *dev)
-{
- PCIESPState *pci = DO_UPCAST(PCIESPState, dev, dev);
- ESPState *s = &pci->esp;
- uint8_t *pci_conf;
-
- pci_conf = pci->dev.config;
-
- /* Interrupt pin A */
- pci_conf[PCI_INTERRUPT_PIN] = 0x01;
-
- s->dma_memory_read = esp_pci_dma_memory_read;
- s->dma_memory_write = esp_pci_dma_memory_write;
- s->dma_opaque = pci;
- s->chip_id = TCHI_AM53C974;
- memory_region_init_io(&pci->io, &esp_pci_io_ops, pci, "esp-io", 0x80);
-
- pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &pci->io);
- s->irq = pci->dev.irq[0];
-
- scsi_bus_new(&s->bus, &dev->qdev, &esp_pci_scsi_info);
- if (!dev->qdev.hotplugged) {
- return scsi_bus_legacy_handle_cmdline(&s->bus);
- }
- return 0;
-}
-
-static void esp_pci_scsi_uninit(PCIDevice *d)
-{
- PCIESPState *pci = DO_UPCAST(PCIESPState, dev, d);
-
- memory_region_destroy(&pci->io);
-}
-
-static void esp_pci_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
-
- k->init = esp_pci_scsi_init;
- k->exit = esp_pci_scsi_uninit;
- k->vendor_id = PCI_VENDOR_ID_AMD;
- k->device_id = PCI_DEVICE_ID_AMD_SCSI;
- k->revision = 0x10;
- k->class_id = PCI_CLASS_STORAGE_SCSI;
- dc->desc = "AMD Am53c974 PCscsi-PCI SCSI adapter";
- dc->reset = esp_pci_hard_reset;
- dc->vmsd = &vmstate_esp_pci_scsi;
-}
-
-static const TypeInfo esp_pci_info = {
- .name = "am53c974",
- .parent = TYPE_PCI_DEVICE,
- .instance_size = sizeof(PCIESPState),
- .class_init = esp_pci_class_init,
-};
-
static void esp_register_types(void)
{
type_register_static(&sysbus_esp_info);
- type_register_static(&esp_pci_info);
}
type_init(esp_register_types)
--
1.7.10.4
- [Qemu-devel] [PATCH v3 0/4] esp: add Tekram DC-390 emulation (PC SCSI adapter), Hervé Poussineau, 2012/08/04
- [Qemu-devel] [PATCH v3 1/4] esp: move some definitions to header file, Hervé Poussineau, 2012/08/04
- [Qemu-devel] [PATCH v3 2/4] esp: move PCI emulation to a new file esp-pci.c,
Hervé Poussineau <=
- [Qemu-devel] [PATCH v3 3/4] Revert "pci: add some stubs", Hervé Poussineau, 2012/08/04
- [Qemu-devel] [PATCH v3 4/4] esp: add Tekram DC-390 emulation (PC SCSI adapter), Hervé Poussineau, 2012/08/04
- [Qemu-devel] [FOR 1.2] Re: [PATCH v3 0/4] esp: add Tekram DC-390 emulation (PC SCSI adapter), Hervé Poussineau, 2012/08/09
- Re: [Qemu-devel] [PATCH v3 0/4] esp: add Tekram DC-390 emulation (PC SCSI adapter), Blue Swirl, 2012/08/09