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ahci: make number of ports runtime determined 

Different AHCI controllers have a different number of ports, so the core
shouldn't care about the amount of ports available.

This patch makes the number of ports available to the AHCI core runtime
configurable, allowing us to have multiple different AHCI implementations
with different amounts of ports.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alexander Graf 2011-02-01 15:51:31 +01:00 committed by Kevin Wolf
parent 760c3e44d3
commit 2c4b9d0ea4
3 changed files with 26 additions and 16 deletions
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29
hw/ide/ahci.c
View File

@ -145,7 +145,7 @@ static void ahci_check_irq(AHCIState *s)
DPRINTF(-1, "check irq %#x\n", s->control_regs.irqstatus);
for (i = 0; i < SATA_PORTS; i++) {
for (i = 0; i < s->ports; i++) {
AHCIPortRegs *pr = &s->dev[i].port_regs;
if (pr->irq_stat & pr->irq_mask) {
s->control_regs.irqstatus |= (1 << i);
@ -303,7 +303,8 @@ static uint32_t ahci_mem_readl(void *ptr, target_phys_addr_t addr)
DPRINTF(-1, "(addr 0x%08X), val 0x%08X\n", (unsigned) addr, val);
} else if ((addr >= AHCI_PORT_REGS_START_ADDR) &&
(addr < AHCI_PORT_REGS_END_ADDR)) {
(addr < (AHCI_PORT_REGS_START_ADDR +
(s->ports * AHCI_PORT_ADDR_OFFSET_LEN)))) {
val = ahci_port_read(s, (addr - AHCI_PORT_REGS_START_ADDR) >> 7,
addr & AHCI_PORT_ADDR_OFFSET_MASK);
}
@ -355,7 +356,8 @@ static void ahci_mem_writel(void *ptr, target_phys_addr_t addr, uint32_t val)
DPRINTF(-1, "write to unknown register 0x%x\n", (unsigned)addr);
}
} else if ((addr >= AHCI_PORT_REGS_START_ADDR) &&
(addr < AHCI_PORT_REGS_END_ADDR)) {
(addr < (AHCI_PORT_REGS_START_ADDR +
(s->ports * AHCI_PORT_ADDR_OFFSET_LEN)))) {
ahci_port_write(s, (addr - AHCI_PORT_REGS_START_ADDR) >> 7,
addr & AHCI_PORT_ADDR_OFFSET_MASK, val);
}
@ -378,16 +380,16 @@ static void ahci_reg_init(AHCIState *s)
{
int i;
s->control_regs.cap = (SATA_PORTS - 1) |
s->control_regs.cap = (s->ports - 1) |
(AHCI_NUM_COMMAND_SLOTS << 8) |
(AHCI_SUPPORTED_SPEED_GEN1 << AHCI_SUPPORTED_SPEED) |
HOST_CAP_NCQ | HOST_CAP_AHCI;
s->control_regs.impl = (1 << SATA_PORTS) - 1;
s->control_regs.impl = (1 << s->ports) - 1;
s->control_regs.version = AHCI_VERSION_1_0;
for (i = 0; i < SATA_PORTS; i++) {
for (i = 0; i < s->ports; i++) {
s->dev[i].port_state = STATE_RUN;
}
}
@ -1096,17 +1098,19 @@ static const IDEDMAOps ahci_dma_ops = {
.reset = ahci_dma_reset,
};
void ahci_init(AHCIState *s, DeviceState *qdev)
void ahci_init(AHCIState *s, DeviceState *qdev, int ports)
{
qemu_irq *irqs;
int i;
s->ports = ports;
s->dev = qemu_mallocz(sizeof(AHCIDevice) * ports);
ahci_reg_init(s);
s->mem = cpu_register_io_memory(ahci_readfn, ahci_writefn, s,
DEVICE_LITTLE_ENDIAN);
irqs = qemu_allocate_irqs(ahci_irq_set, s, SATA_PORTS);
irqs = qemu_allocate_irqs(ahci_irq_set, s, s->ports);
for (i = 0; i < SATA_PORTS; i++) {
for (i = 0; i < s->ports; i++) {
AHCIDevice *ad = &s->dev[i];
ide_bus_new(&ad->port, qdev, i);
@ -1120,6 +1124,11 @@ void ahci_init(AHCIState *s, DeviceState *qdev)
}
}
void ahci_uninit(AHCIState *s)
{
qemu_free(s->dev);
}
void ahci_pci_map(PCIDevice *pci_dev, int region_num,
pcibus_t addr, pcibus_t size, int type)
{
@ -1137,7 +1146,7 @@ void ahci_reset(void *opaque)
d->ahci.control_regs.irqstatus = 0;
d->ahci.control_regs.ghc = 0;
for (i = 0; i < SATA_PORTS; i++) {
for (i = 0; i < d->ahci.ports; i++) {
ahci_reset_port(&d->ahci, i);
}
}

10
hw/ide/ahci.h
View File

@ -188,11 +188,9 @@
#define AHCI_GENERIC_HOST_CONTROL_REGS_MAX_ADDR 0x20
/* Shouldn't this be 0x2c? */
#define SATA_PORTS 4
#define AHCI_PORT_REGS_START_ADDR 0x100
#define AHCI_PORT_REGS_END_ADDR (AHCI_PORT_REGS_START_ADDR + SATA_PORTS * 0x80)
#define AHCI_PORT_ADDR_OFFSET_MASK 0x7f
#define AHCI_PORT_ADDR_OFFSET_LEN 0x80
#define AHCI_NUM_COMMAND_SLOTS 31
#define AHCI_SUPPORTED_SPEED 20
@ -289,9 +287,10 @@ struct AHCIDevice {
};
typedef struct AHCIState {
AHCIDevice dev[SATA_PORTS];
AHCIDevice *dev;
AHCIControlRegs control_regs;
int mem;
int ports;
qemu_irq irq;
} AHCIState;
@ -323,7 +322,8 @@ typedef struct NCQFrame {
uint8_t reserved10;
} __attribute__ ((packed)) NCQFrame;
void ahci_init(AHCIState *s, DeviceState *qdev);
void ahci_init(AHCIState *s, DeviceState *qdev, int ports);
void ahci_uninit(AHCIState *s);
void ahci_pci_map(PCIDevice *pci_dev, int region_num,
pcibus_t addr, pcibus_t size, int type);

3
hw/ide/ich.c
View File

@ -100,7 +100,7 @@ static int pci_ich9_ahci_init(PCIDevice *dev)
msi_init(dev, 0x50, 1, true, false);
ahci_init(&d->ahci, &dev->qdev);
ahci_init(&d->ahci, &dev->qdev, 6);
d->ahci.irq = d->card.irq[0];
return 0;
@ -116,6 +116,7 @@ static int pci_ich9_uninit(PCIDevice *dev)
}
qemu_unregister_reset(ahci_reset, d);
ahci_uninit(&d->ahci);
return 0;
}