root / hw / ide / ahci.c @ ea8d82a1
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/*
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* QEMU AHCI Emulation
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*
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* Copyright (c) 2010 qiaochong@loongson.cn
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* Copyright (c) 2010 Roland Elek <elek.roland@gmail.com>
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* Copyright (c) 2010 Sebastian Herbszt <herbszt@gmx.de>
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* Copyright (c) 2010 Alexander Graf <agraf@suse.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <hw/hw.h> |
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#include <hw/msi.h> |
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#include <hw/pc.h> |
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#include <hw/pci.h> |
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#include <hw/sysbus.h> |
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|
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#include "monitor.h" |
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#include "dma.h" |
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#include "cpu-common.h" |
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#include "internal.h" |
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#include <hw/ide/pci.h> |
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#include <hw/ide/ahci.h> |
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|
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/* #define DEBUG_AHCI */
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#ifdef DEBUG_AHCI
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#define DPRINTF(port, fmt, ...) \
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do { fprintf(stderr, "ahci: %s: [%d] ", __FUNCTION__, port); \ |
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fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
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#else
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#define DPRINTF(port, fmt, ...) do {} while(0) |
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#endif
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|
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static void check_cmd(AHCIState *s, int port); |
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static int handle_cmd(AHCIState *s,int port,int slot); |
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static void ahci_reset_port(AHCIState *s, int port); |
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static void ahci_write_fis_d2h(AHCIDevice *ad, uint8_t *cmd_fis); |
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static void ahci_init_d2h(AHCIDevice *ad); |
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|
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static uint32_t ahci_port_read(AHCIState *s, int port, int offset) |
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{
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uint32_t val; |
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AHCIPortRegs *pr; |
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pr = &s->dev[port].port_regs; |
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|
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switch (offset) {
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case PORT_LST_ADDR:
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val = pr->lst_addr; |
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break;
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case PORT_LST_ADDR_HI:
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val = pr->lst_addr_hi; |
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break;
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case PORT_FIS_ADDR:
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val = pr->fis_addr; |
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break;
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case PORT_FIS_ADDR_HI:
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val = pr->fis_addr_hi; |
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break;
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case PORT_IRQ_STAT:
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val = pr->irq_stat; |
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break;
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case PORT_IRQ_MASK:
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val = pr->irq_mask; |
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break;
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case PORT_CMD:
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val = pr->cmd; |
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break;
|
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case PORT_TFDATA:
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val = ((uint16_t)s->dev[port].port.ifs[0].error << 8) | |
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s->dev[port].port.ifs[0].status;
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break;
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case PORT_SIG:
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val = pr->sig; |
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break;
|
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case PORT_SCR_STAT:
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if (s->dev[port].port.ifs[0].bs) { |
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val = SATA_SCR_SSTATUS_DET_DEV_PRESENT_PHY_UP | |
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SATA_SCR_SSTATUS_SPD_GEN1 | SATA_SCR_SSTATUS_IPM_ACTIVE; |
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} else {
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val = SATA_SCR_SSTATUS_DET_NODEV; |
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} |
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break;
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case PORT_SCR_CTL:
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val = pr->scr_ctl; |
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break;
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case PORT_SCR_ERR:
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val = pr->scr_err; |
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break;
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case PORT_SCR_ACT:
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pr->scr_act &= ~s->dev[port].finished; |
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s->dev[port].finished = 0;
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val = pr->scr_act; |
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break;
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case PORT_CMD_ISSUE:
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val = pr->cmd_issue; |
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break;
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case PORT_RESERVED:
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default:
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val = 0;
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} |
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DPRINTF(port, "offset: 0x%x val: 0x%x\n", offset, val);
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return val;
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} |
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static void ahci_irq_raise(AHCIState *s, AHCIDevice *dev) |
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{
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struct AHCIPCIState *d = container_of(s, AHCIPCIState, ahci);
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DPRINTF(0, "raise irq\n"); |
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if (msi_enabled(&d->card)) {
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msi_notify(&d->card, 0);
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} else {
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qemu_irq_raise(s->irq); |
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} |
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} |
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|
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static void ahci_irq_lower(AHCIState *s, AHCIDevice *dev) |
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{
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struct AHCIPCIState *d = container_of(s, AHCIPCIState, ahci);
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DPRINTF(0, "lower irq\n"); |
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if (!msi_enabled(&d->card)) {
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qemu_irq_lower(s->irq); |
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} |
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} |
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static void ahci_check_irq(AHCIState *s) |
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{
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int i;
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DPRINTF(-1, "check irq %#x\n", s->control_regs.irqstatus); |
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s->control_regs.irqstatus = 0;
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for (i = 0; i < s->ports; i++) { |
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AHCIPortRegs *pr = &s->dev[i].port_regs; |
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if (pr->irq_stat & pr->irq_mask) {
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s->control_regs.irqstatus |= (1 << i);
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} |
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} |
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if (s->control_regs.irqstatus &&
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(s->control_regs.ghc & HOST_CTL_IRQ_EN)) {
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ahci_irq_raise(s, NULL);
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} else {
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ahci_irq_lower(s, NULL);
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} |
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} |
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static void ahci_trigger_irq(AHCIState *s, AHCIDevice *d, |
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int irq_type)
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{
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DPRINTF(d->port_no, "trigger irq %#x -> %x\n",
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irq_type, d->port_regs.irq_mask & irq_type); |
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d->port_regs.irq_stat |= irq_type; |
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ahci_check_irq(s); |
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} |
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|
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static void map_page(uint8_t **ptr, uint64_t addr, uint32_t wanted) |
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{
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target_phys_addr_t len = wanted; |
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|
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if (*ptr) {
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cpu_physical_memory_unmap(*ptr, len, 1, len);
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} |
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*ptr = cpu_physical_memory_map(addr, &len, 1);
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if (len < wanted) {
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cpu_physical_memory_unmap(*ptr, len, 1, len);
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*ptr = NULL;
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} |
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} |
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|
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static void ahci_port_write(AHCIState *s, int port, int offset, uint32_t val) |
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{
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AHCIPortRegs *pr = &s->dev[port].port_regs; |
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DPRINTF(port, "offset: 0x%x val: 0x%x\n", offset, val);
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switch (offset) {
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case PORT_LST_ADDR:
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pr->lst_addr = val; |
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map_page(&s->dev[port].lst, |
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((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024); |
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s->dev[port].cur_cmd = NULL;
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break;
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case PORT_LST_ADDR_HI:
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pr->lst_addr_hi = val; |
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map_page(&s->dev[port].lst, |
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((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024); |
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s->dev[port].cur_cmd = NULL;
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break;
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case PORT_FIS_ADDR:
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pr->fis_addr = val; |
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map_page(&s->dev[port].res_fis, |
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((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256); |
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break;
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case PORT_FIS_ADDR_HI:
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pr->fis_addr_hi = val; |
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map_page(&s->dev[port].res_fis, |
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((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256); |
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break;
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case PORT_IRQ_STAT:
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pr->irq_stat &= ~val; |
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ahci_check_irq(s); |
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break;
|
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case PORT_IRQ_MASK:
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pr->irq_mask = val & 0xfdc000ff;
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ahci_check_irq(s); |
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break;
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case PORT_CMD:
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pr->cmd = val & ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON); |
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|
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if (pr->cmd & PORT_CMD_START) {
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pr->cmd |= PORT_CMD_LIST_ON; |
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} |
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|
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if (pr->cmd & PORT_CMD_FIS_RX) {
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pr->cmd |= PORT_CMD_FIS_ON; |
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} |
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|
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/* XXX usually the FIS would be pending on the bus here and
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issuing deferred until the OS enables FIS receival.
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Instead, we only submit it once - which works in most
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cases, but is a hack. */
|
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if ((pr->cmd & PORT_CMD_FIS_ON) &&
|
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!s->dev[port].init_d2h_sent) {
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ahci_init_d2h(&s->dev[port]); |
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s->dev[port].init_d2h_sent = 1;
|
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} |
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|
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check_cmd(s, port); |
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break;
|
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case PORT_TFDATA:
|
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s->dev[port].port.ifs[0].error = (val >> 8) & 0xff; |
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s->dev[port].port.ifs[0].status = val & 0xff; |
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break;
|
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case PORT_SIG:
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pr->sig = val; |
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break;
|
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case PORT_SCR_STAT:
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pr->scr_stat = val; |
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break;
|
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case PORT_SCR_CTL:
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if (((pr->scr_ctl & AHCI_SCR_SCTL_DET) == 1) && |
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((val & AHCI_SCR_SCTL_DET) == 0)) {
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ahci_reset_port(s, port); |
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} |
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pr->scr_ctl = val; |
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break;
|
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case PORT_SCR_ERR:
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pr->scr_err &= ~val; |
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break;
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case PORT_SCR_ACT:
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/* RW1 */
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pr->scr_act |= val; |
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break;
|
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case PORT_CMD_ISSUE:
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pr->cmd_issue |= val; |
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check_cmd(s, port); |
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break;
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default:
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break;
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} |
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} |
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|
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static uint64_t ahci_mem_read(void *opaque, target_phys_addr_t addr, |
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unsigned size)
|
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{
|
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AHCIState *s = opaque; |
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uint32_t val = 0;
|
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|
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if (addr < AHCI_GENERIC_HOST_CONTROL_REGS_MAX_ADDR) {
|
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switch (addr) {
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case HOST_CAP:
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val = s->control_regs.cap; |
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break;
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case HOST_CTL:
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val = s->control_regs.ghc; |
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break;
|
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case HOST_IRQ_STAT:
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val = s->control_regs.irqstatus; |
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break;
|
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case HOST_PORTS_IMPL:
|
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val = s->control_regs.impl; |
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break;
|
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case HOST_VERSION:
|
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val = s->control_regs.version; |
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break;
|
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} |
| 306 |
|
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DPRINTF(-1, "(addr 0x%08X), val 0x%08X\n", (unsigned) addr, val); |
| 308 |
} else if ((addr >= AHCI_PORT_REGS_START_ADDR) && |
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(addr < (AHCI_PORT_REGS_START_ADDR + |
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(s->ports * AHCI_PORT_ADDR_OFFSET_LEN)))) {
|
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val = ahci_port_read(s, (addr - AHCI_PORT_REGS_START_ADDR) >> 7,
|
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addr & AHCI_PORT_ADDR_OFFSET_MASK); |
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} |
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|
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return val;
|
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} |
| 317 |
|
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|
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|
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static void ahci_mem_write(void *opaque, target_phys_addr_t addr, |
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uint64_t val, unsigned size)
|
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{
|
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AHCIState *s = opaque; |
| 324 |
|
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/* Only aligned reads are allowed on AHCI */
|
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if (addr & 3) { |
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fprintf(stderr, "ahci: Mis-aligned write to addr 0x"
|
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TARGET_FMT_plx "\n", addr);
|
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return;
|
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} |
| 331 |
|
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if (addr < AHCI_GENERIC_HOST_CONTROL_REGS_MAX_ADDR) {
|
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DPRINTF(-1, "(addr 0x%08X), val 0x%08"PRIX64"\n", (unsigned) addr, val); |
| 334 |
|
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switch (addr) {
|
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case HOST_CAP: /* R/WO, RO */ |
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/* FIXME handle R/WO */
|
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break;
|
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case HOST_CTL: /* R/W */ |
| 340 |
if (val & HOST_CTL_RESET) {
|
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DPRINTF(-1, "HBA Reset\n"); |
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ahci_reset(s); |
| 343 |
} else {
|
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s->control_regs.ghc = (val & 0x3) | HOST_CTL_AHCI_EN;
|
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ahci_check_irq(s); |
| 346 |
} |
| 347 |
break;
|
| 348 |
case HOST_IRQ_STAT: /* R/WC, RO */ |
| 349 |
s->control_regs.irqstatus &= ~val; |
| 350 |
ahci_check_irq(s); |
| 351 |
break;
|
| 352 |
case HOST_PORTS_IMPL: /* R/WO, RO */ |
| 353 |
/* FIXME handle R/WO */
|
| 354 |
break;
|
| 355 |
case HOST_VERSION: /* RO */ |
| 356 |
/* FIXME report write? */
|
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break;
|
| 358 |
default:
|
| 359 |
DPRINTF(-1, "write to unknown register 0x%x\n", (unsigned)addr); |
| 360 |
} |
| 361 |
} else if ((addr >= AHCI_PORT_REGS_START_ADDR) && |
| 362 |
(addr < (AHCI_PORT_REGS_START_ADDR + |
| 363 |
(s->ports * AHCI_PORT_ADDR_OFFSET_LEN)))) {
|
| 364 |
ahci_port_write(s, (addr - AHCI_PORT_REGS_START_ADDR) >> 7,
|
| 365 |
addr & AHCI_PORT_ADDR_OFFSET_MASK, val); |
| 366 |
} |
| 367 |
|
| 368 |
} |
| 369 |
|
| 370 |
static const MemoryRegionOps ahci_mem_ops = { |
| 371 |
.read = ahci_mem_read, |
| 372 |
.write = ahci_mem_write, |
| 373 |
.endianness = DEVICE_LITTLE_ENDIAN, |
| 374 |
}; |
| 375 |
|
| 376 |
static uint64_t ahci_idp_read(void *opaque, target_phys_addr_t addr, |
| 377 |
unsigned size)
|
| 378 |
{
|
| 379 |
AHCIState *s = opaque; |
| 380 |
|
| 381 |
if (addr == s->idp_offset) {
|
| 382 |
/* index register */
|
| 383 |
return s->idp_index;
|
| 384 |
} else if (addr == s->idp_offset + 4) { |
| 385 |
/* data register - do memory read at location selected by index */
|
| 386 |
return ahci_mem_read(opaque, s->idp_index, size);
|
| 387 |
} else {
|
| 388 |
return 0; |
| 389 |
} |
| 390 |
} |
| 391 |
|
| 392 |
static void ahci_idp_write(void *opaque, target_phys_addr_t addr, |
| 393 |
uint64_t val, unsigned size)
|
| 394 |
{
|
| 395 |
AHCIState *s = opaque; |
| 396 |
|
| 397 |
if (addr == s->idp_offset) {
|
| 398 |
/* index register - mask off reserved bits */
|
| 399 |
s->idp_index = (uint32_t)val & ((AHCI_MEM_BAR_SIZE - 1) & ~3); |
| 400 |
} else if (addr == s->idp_offset + 4) { |
| 401 |
/* data register - do memory write at location selected by index */
|
| 402 |
ahci_mem_write(opaque, s->idp_index, val, size); |
| 403 |
} |
| 404 |
} |
| 405 |
|
| 406 |
static const MemoryRegionOps ahci_idp_ops = { |
| 407 |
.read = ahci_idp_read, |
| 408 |
.write = ahci_idp_write, |
| 409 |
.endianness = DEVICE_LITTLE_ENDIAN, |
| 410 |
}; |
| 411 |
|
| 412 |
|
| 413 |
static void ahci_reg_init(AHCIState *s) |
| 414 |
{
|
| 415 |
int i;
|
| 416 |
|
| 417 |
s->control_regs.cap = (s->ports - 1) |
|
| 418 |
(AHCI_NUM_COMMAND_SLOTS << 8) |
|
| 419 |
(AHCI_SUPPORTED_SPEED_GEN1 << AHCI_SUPPORTED_SPEED) | |
| 420 |
HOST_CAP_NCQ | HOST_CAP_AHCI; |
| 421 |
|
| 422 |
s->control_regs.impl = (1 << s->ports) - 1; |
| 423 |
|
| 424 |
s->control_regs.version = AHCI_VERSION_1_0; |
| 425 |
|
| 426 |
for (i = 0; i < s->ports; i++) { |
| 427 |
s->dev[i].port_state = STATE_RUN; |
| 428 |
} |
| 429 |
} |
| 430 |
|
| 431 |
static void check_cmd(AHCIState *s, int port) |
| 432 |
{
|
| 433 |
AHCIPortRegs *pr = &s->dev[port].port_regs; |
| 434 |
int slot;
|
| 435 |
|
| 436 |
if ((pr->cmd & PORT_CMD_START) && pr->cmd_issue) {
|
| 437 |
for (slot = 0; (slot < 32) && pr->cmd_issue; slot++) { |
| 438 |
if ((pr->cmd_issue & (1 << slot)) && |
| 439 |
!handle_cmd(s, port, slot)) {
|
| 440 |
pr->cmd_issue &= ~(1 << slot);
|
| 441 |
} |
| 442 |
} |
| 443 |
} |
| 444 |
} |
| 445 |
|
| 446 |
static void ahci_check_cmd_bh(void *opaque) |
| 447 |
{
|
| 448 |
AHCIDevice *ad = opaque; |
| 449 |
|
| 450 |
qemu_bh_delete(ad->check_bh); |
| 451 |
ad->check_bh = NULL;
|
| 452 |
|
| 453 |
if ((ad->busy_slot != -1) && |
| 454 |
!(ad->port.ifs[0].status & (BUSY_STAT|DRQ_STAT))) {
|
| 455 |
/* no longer busy */
|
| 456 |
ad->port_regs.cmd_issue &= ~(1 << ad->busy_slot);
|
| 457 |
ad->busy_slot = -1;
|
| 458 |
} |
| 459 |
|
| 460 |
check_cmd(ad->hba, ad->port_no); |
| 461 |
} |
| 462 |
|
| 463 |
static void ahci_init_d2h(AHCIDevice *ad) |
| 464 |
{
|
| 465 |
uint8_t init_fis[20];
|
| 466 |
IDEState *ide_state = &ad->port.ifs[0];
|
| 467 |
|
| 468 |
memset(init_fis, 0, sizeof(init_fis)); |
| 469 |
|
| 470 |
init_fis[4] = 1; |
| 471 |
init_fis[12] = 1; |
| 472 |
|
| 473 |
if (ide_state->drive_kind == IDE_CD) {
|
| 474 |
init_fis[5] = ide_state->lcyl;
|
| 475 |
init_fis[6] = ide_state->hcyl;
|
| 476 |
} |
| 477 |
|
| 478 |
ahci_write_fis_d2h(ad, init_fis); |
| 479 |
} |
| 480 |
|
| 481 |
static void ahci_reset_port(AHCIState *s, int port) |
| 482 |
{
|
| 483 |
AHCIDevice *d = &s->dev[port]; |
| 484 |
AHCIPortRegs *pr = &d->port_regs; |
| 485 |
IDEState *ide_state = &d->port.ifs[0];
|
| 486 |
int i;
|
| 487 |
|
| 488 |
DPRINTF(port, "reset port\n");
|
| 489 |
|
| 490 |
ide_bus_reset(&d->port); |
| 491 |
ide_state->ncq_queues = AHCI_MAX_CMDS; |
| 492 |
|
| 493 |
pr->scr_stat = 0;
|
| 494 |
pr->scr_err = 0;
|
| 495 |
pr->scr_act = 0;
|
| 496 |
d->busy_slot = -1;
|
| 497 |
d->init_d2h_sent = 0;
|
| 498 |
|
| 499 |
ide_state = &s->dev[port].port.ifs[0];
|
| 500 |
if (!ide_state->bs) {
|
| 501 |
return;
|
| 502 |
} |
| 503 |
|
| 504 |
/* reset ncq queue */
|
| 505 |
for (i = 0; i < AHCI_MAX_CMDS; i++) { |
| 506 |
NCQTransferState *ncq_tfs = &s->dev[port].ncq_tfs[i]; |
| 507 |
if (!ncq_tfs->used) {
|
| 508 |
continue;
|
| 509 |
} |
| 510 |
|
| 511 |
if (ncq_tfs->aiocb) {
|
| 512 |
bdrv_aio_cancel(ncq_tfs->aiocb); |
| 513 |
ncq_tfs->aiocb = NULL;
|
| 514 |
} |
| 515 |
|
| 516 |
/* Maybe we just finished the request thanks to bdrv_aio_cancel() */
|
| 517 |
if (!ncq_tfs->used) {
|
| 518 |
continue;
|
| 519 |
} |
| 520 |
|
| 521 |
qemu_sglist_destroy(&ncq_tfs->sglist); |
| 522 |
ncq_tfs->used = 0;
|
| 523 |
} |
| 524 |
|
| 525 |
s->dev[port].port_state = STATE_RUN; |
| 526 |
if (!ide_state->bs) {
|
| 527 |
s->dev[port].port_regs.sig = 0;
|
| 528 |
ide_state->status = SEEK_STAT | WRERR_STAT; |
| 529 |
} else if (ide_state->drive_kind == IDE_CD) { |
| 530 |
s->dev[port].port_regs.sig = SATA_SIGNATURE_CDROM; |
| 531 |
ide_state->lcyl = 0x14;
|
| 532 |
ide_state->hcyl = 0xeb;
|
| 533 |
DPRINTF(port, "set lcyl = %d\n", ide_state->lcyl);
|
| 534 |
ide_state->status = SEEK_STAT | WRERR_STAT | READY_STAT; |
| 535 |
} else {
|
| 536 |
s->dev[port].port_regs.sig = SATA_SIGNATURE_DISK; |
| 537 |
ide_state->status = SEEK_STAT | WRERR_STAT; |
| 538 |
} |
| 539 |
|
| 540 |
ide_state->error = 1;
|
| 541 |
ahci_init_d2h(d); |
| 542 |
} |
| 543 |
|
| 544 |
static void debug_print_fis(uint8_t *fis, int cmd_len) |
| 545 |
{
|
| 546 |
#ifdef DEBUG_AHCI
|
| 547 |
int i;
|
| 548 |
|
| 549 |
fprintf(stderr, "fis:");
|
| 550 |
for (i = 0; i < cmd_len; i++) { |
| 551 |
if ((i & 0xf) == 0) { |
| 552 |
fprintf(stderr, "\n%02x:",i);
|
| 553 |
} |
| 554 |
fprintf(stderr, "%02x ",fis[i]);
|
| 555 |
} |
| 556 |
fprintf(stderr, "\n");
|
| 557 |
#endif
|
| 558 |
} |
| 559 |
|
| 560 |
static void ahci_write_fis_sdb(AHCIState *s, int port, uint32_t finished) |
| 561 |
{
|
| 562 |
AHCIPortRegs *pr = &s->dev[port].port_regs; |
| 563 |
IDEState *ide_state; |
| 564 |
uint8_t *sdb_fis; |
| 565 |
|
| 566 |
if (!s->dev[port].res_fis ||
|
| 567 |
!(pr->cmd & PORT_CMD_FIS_RX)) {
|
| 568 |
return;
|
| 569 |
} |
| 570 |
|
| 571 |
sdb_fis = &s->dev[port].res_fis[RES_FIS_SDBFIS]; |
| 572 |
ide_state = &s->dev[port].port.ifs[0];
|
| 573 |
|
| 574 |
/* clear memory */
|
| 575 |
*(uint32_t*)sdb_fis = 0;
|
| 576 |
|
| 577 |
/* write values */
|
| 578 |
sdb_fis[0] = ide_state->error;
|
| 579 |
sdb_fis[2] = ide_state->status & 0x77; |
| 580 |
s->dev[port].finished |= finished; |
| 581 |
*(uint32_t*)(sdb_fis + 4) = cpu_to_le32(s->dev[port].finished);
|
| 582 |
|
| 583 |
ahci_trigger_irq(s, &s->dev[port], PORT_IRQ_STAT_SDBS); |
| 584 |
} |
| 585 |
|
| 586 |
static void ahci_write_fis_d2h(AHCIDevice *ad, uint8_t *cmd_fis) |
| 587 |
{
|
| 588 |
AHCIPortRegs *pr = &ad->port_regs; |
| 589 |
uint8_t *d2h_fis; |
| 590 |
int i;
|
| 591 |
dma_addr_t cmd_len = 0x80;
|
| 592 |
int cmd_mapped = 0; |
| 593 |
|
| 594 |
if (!ad->res_fis || !(pr->cmd & PORT_CMD_FIS_RX)) {
|
| 595 |
return;
|
| 596 |
} |
| 597 |
|
| 598 |
if (!cmd_fis) {
|
| 599 |
/* map cmd_fis */
|
| 600 |
uint64_t tbl_addr = le64_to_cpu(ad->cur_cmd->tbl_addr); |
| 601 |
cmd_fis = dma_memory_map(ad->hba->dma, tbl_addr, &cmd_len, |
| 602 |
DMA_DIRECTION_TO_DEVICE); |
| 603 |
cmd_mapped = 1;
|
| 604 |
} |
| 605 |
|
| 606 |
d2h_fis = &ad->res_fis[RES_FIS_RFIS]; |
| 607 |
|
| 608 |
d2h_fis[0] = 0x34; |
| 609 |
d2h_fis[1] = (ad->hba->control_regs.irqstatus ? (1 << 6) : 0); |
| 610 |
d2h_fis[2] = ad->port.ifs[0].status; |
| 611 |
d2h_fis[3] = ad->port.ifs[0].error; |
| 612 |
|
| 613 |
d2h_fis[4] = cmd_fis[4]; |
| 614 |
d2h_fis[5] = cmd_fis[5]; |
| 615 |
d2h_fis[6] = cmd_fis[6]; |
| 616 |
d2h_fis[7] = cmd_fis[7]; |
| 617 |
d2h_fis[8] = cmd_fis[8]; |
| 618 |
d2h_fis[9] = cmd_fis[9]; |
| 619 |
d2h_fis[10] = cmd_fis[10]; |
| 620 |
d2h_fis[11] = cmd_fis[11]; |
| 621 |
d2h_fis[12] = cmd_fis[12]; |
| 622 |
d2h_fis[13] = cmd_fis[13]; |
| 623 |
for (i = 14; i < 20; i++) { |
| 624 |
d2h_fis[i] = 0;
|
| 625 |
} |
| 626 |
|
| 627 |
if (d2h_fis[2] & ERR_STAT) { |
| 628 |
ahci_trigger_irq(ad->hba, ad, PORT_IRQ_STAT_TFES); |
| 629 |
} |
| 630 |
|
| 631 |
ahci_trigger_irq(ad->hba, ad, PORT_IRQ_D2H_REG_FIS); |
| 632 |
|
| 633 |
if (cmd_mapped) {
|
| 634 |
dma_memory_unmap(ad->hba->dma, cmd_fis, cmd_len, |
| 635 |
DMA_DIRECTION_TO_DEVICE, cmd_len); |
| 636 |
} |
| 637 |
} |
| 638 |
|
| 639 |
static int ahci_populate_sglist(AHCIDevice *ad, QEMUSGList *sglist, int offset) |
| 640 |
{
|
| 641 |
AHCICmdHdr *cmd = ad->cur_cmd; |
| 642 |
uint32_t opts = le32_to_cpu(cmd->opts); |
| 643 |
uint64_t prdt_addr = le64_to_cpu(cmd->tbl_addr) + 0x80;
|
| 644 |
int sglist_alloc_hint = opts >> AHCI_CMD_HDR_PRDT_LEN;
|
| 645 |
dma_addr_t prdt_len = (sglist_alloc_hint * sizeof(AHCI_SG));
|
| 646 |
dma_addr_t real_prdt_len = prdt_len; |
| 647 |
uint8_t *prdt; |
| 648 |
int i;
|
| 649 |
int r = 0; |
| 650 |
int sum = 0; |
| 651 |
int off_idx = -1; |
| 652 |
int off_pos = -1; |
| 653 |
int tbl_entry_size;
|
| 654 |
|
| 655 |
if (!sglist_alloc_hint) {
|
| 656 |
DPRINTF(ad->port_no, "no sg list given by guest: 0x%08x\n", opts);
|
| 657 |
return -1; |
| 658 |
} |
| 659 |
|
| 660 |
/* map PRDT */
|
| 661 |
if (!(prdt = dma_memory_map(ad->hba->dma, prdt_addr, &prdt_len,
|
| 662 |
DMA_DIRECTION_TO_DEVICE))){
|
| 663 |
DPRINTF(ad->port_no, "map failed\n");
|
| 664 |
return -1; |
| 665 |
} |
| 666 |
|
| 667 |
if (prdt_len < real_prdt_len) {
|
| 668 |
DPRINTF(ad->port_no, "mapped less than expected\n");
|
| 669 |
r = -1;
|
| 670 |
goto out;
|
| 671 |
} |
| 672 |
|
| 673 |
/* Get entries in the PRDT, init a qemu sglist accordingly */
|
| 674 |
if (sglist_alloc_hint > 0) { |
| 675 |
AHCI_SG *tbl = (AHCI_SG *)prdt; |
| 676 |
sum = 0;
|
| 677 |
for (i = 0; i < sglist_alloc_hint; i++) { |
| 678 |
/* flags_size is zero-based */
|
| 679 |
tbl_entry_size = (le32_to_cpu(tbl[i].flags_size) + 1);
|
| 680 |
if (offset <= (sum + tbl_entry_size)) {
|
| 681 |
off_idx = i; |
| 682 |
off_pos = offset - sum; |
| 683 |
break;
|
| 684 |
} |
| 685 |
sum += tbl_entry_size; |
| 686 |
} |
| 687 |
if ((off_idx == -1) || (off_pos < 0) || (off_pos > tbl_entry_size)) { |
| 688 |
DPRINTF(ad->port_no, "%s: Incorrect offset! "
|
| 689 |
"off_idx: %d, off_pos: %d\n",
|
| 690 |
__func__, off_idx, off_pos); |
| 691 |
r = -1;
|
| 692 |
goto out;
|
| 693 |
} |
| 694 |
|
| 695 |
qemu_sglist_init(sglist, (sglist_alloc_hint - off_idx), ad->hba->dma); |
| 696 |
qemu_sglist_add(sglist, le64_to_cpu(tbl[off_idx].addr + off_pos), |
| 697 |
le32_to_cpu(tbl[off_idx].flags_size) + 1 - off_pos);
|
| 698 |
|
| 699 |
for (i = off_idx + 1; i < sglist_alloc_hint; i++) { |
| 700 |
/* flags_size is zero-based */
|
| 701 |
qemu_sglist_add(sglist, le64_to_cpu(tbl[i].addr), |
| 702 |
le32_to_cpu(tbl[i].flags_size) + 1);
|
| 703 |
} |
| 704 |
} |
| 705 |
|
| 706 |
out:
|
| 707 |
dma_memory_unmap(ad->hba->dma, prdt, prdt_len, |
| 708 |
DMA_DIRECTION_TO_DEVICE, prdt_len); |
| 709 |
return r;
|
| 710 |
} |
| 711 |
|
| 712 |
static void ncq_cb(void *opaque, int ret) |
| 713 |
{
|
| 714 |
NCQTransferState *ncq_tfs = (NCQTransferState *)opaque; |
| 715 |
IDEState *ide_state = &ncq_tfs->drive->port.ifs[0];
|
| 716 |
|
| 717 |
/* Clear bit for this tag in SActive */
|
| 718 |
ncq_tfs->drive->port_regs.scr_act &= ~(1 << ncq_tfs->tag);
|
| 719 |
|
| 720 |
if (ret < 0) { |
| 721 |
/* error */
|
| 722 |
ide_state->error = ABRT_ERR; |
| 723 |
ide_state->status = READY_STAT | ERR_STAT; |
| 724 |
ncq_tfs->drive->port_regs.scr_err |= (1 << ncq_tfs->tag);
|
| 725 |
} else {
|
| 726 |
ide_state->status = READY_STAT | SEEK_STAT; |
| 727 |
} |
| 728 |
|
| 729 |
ahci_write_fis_sdb(ncq_tfs->drive->hba, ncq_tfs->drive->port_no, |
| 730 |
(1 << ncq_tfs->tag));
|
| 731 |
|
| 732 |
DPRINTF(ncq_tfs->drive->port_no, "NCQ transfer tag %d finished\n",
|
| 733 |
ncq_tfs->tag); |
| 734 |
|
| 735 |
bdrv_acct_done(ncq_tfs->drive->port.ifs[0].bs, &ncq_tfs->acct);
|
| 736 |
qemu_sglist_destroy(&ncq_tfs->sglist); |
| 737 |
ncq_tfs->used = 0;
|
| 738 |
} |
| 739 |
|
| 740 |
static void process_ncq_command(AHCIState *s, int port, uint8_t *cmd_fis, |
| 741 |
int slot)
|
| 742 |
{
|
| 743 |
NCQFrame *ncq_fis = (NCQFrame*)cmd_fis; |
| 744 |
uint8_t tag = ncq_fis->tag >> 3;
|
| 745 |
NCQTransferState *ncq_tfs = &s->dev[port].ncq_tfs[tag]; |
| 746 |
|
| 747 |
if (ncq_tfs->used) {
|
| 748 |
/* error - already in use */
|
| 749 |
fprintf(stderr, "%s: tag %d already used\n", __FUNCTION__, tag);
|
| 750 |
return;
|
| 751 |
} |
| 752 |
|
| 753 |
ncq_tfs->used = 1;
|
| 754 |
ncq_tfs->drive = &s->dev[port]; |
| 755 |
ncq_tfs->slot = slot; |
| 756 |
ncq_tfs->lba = ((uint64_t)ncq_fis->lba5 << 40) |
|
| 757 |
((uint64_t)ncq_fis->lba4 << 32) |
|
| 758 |
((uint64_t)ncq_fis->lba3 << 24) |
|
| 759 |
((uint64_t)ncq_fis->lba2 << 16) |
|
| 760 |
((uint64_t)ncq_fis->lba1 << 8) |
|
| 761 |
(uint64_t)ncq_fis->lba0; |
| 762 |
|
| 763 |
/* Note: We calculate the sector count, but don't currently rely on it.
|
| 764 |
* The total size of the DMA buffer tells us the transfer size instead. */
|
| 765 |
ncq_tfs->sector_count = ((uint16_t)ncq_fis->sector_count_high << 8) |
|
| 766 |
ncq_fis->sector_count_low; |
| 767 |
|
| 768 |
DPRINTF(port, "NCQ transfer LBA from %"PRId64" to %"PRId64", " |
| 769 |
"drive max %"PRId64"\n", |
| 770 |
ncq_tfs->lba, ncq_tfs->lba + ncq_tfs->sector_count - 2,
|
| 771 |
s->dev[port].port.ifs[0].nb_sectors - 1); |
| 772 |
|
| 773 |
ahci_populate_sglist(&s->dev[port], &ncq_tfs->sglist, 0);
|
| 774 |
ncq_tfs->tag = tag; |
| 775 |
|
| 776 |
switch(ncq_fis->command) {
|
| 777 |
case READ_FPDMA_QUEUED:
|
| 778 |
DPRINTF(port, "NCQ reading %d sectors from LBA %"PRId64", " |
| 779 |
"tag %d\n",
|
| 780 |
ncq_tfs->sector_count-1, ncq_tfs->lba, ncq_tfs->tag);
|
| 781 |
|
| 782 |
DPRINTF(port, "tag %d aio read %"PRId64"\n", |
| 783 |
ncq_tfs->tag, ncq_tfs->lba); |
| 784 |
|
| 785 |
dma_acct_start(ncq_tfs->drive->port.ifs[0].bs, &ncq_tfs->acct,
|
| 786 |
&ncq_tfs->sglist, BDRV_ACCT_READ); |
| 787 |
ncq_tfs->aiocb = dma_bdrv_read(ncq_tfs->drive->port.ifs[0].bs,
|
| 788 |
&ncq_tfs->sglist, ncq_tfs->lba, |
| 789 |
ncq_cb, ncq_tfs); |
| 790 |
break;
|
| 791 |
case WRITE_FPDMA_QUEUED:
|
| 792 |
DPRINTF(port, "NCQ writing %d sectors to LBA %"PRId64", tag %d\n", |
| 793 |
ncq_tfs->sector_count-1, ncq_tfs->lba, ncq_tfs->tag);
|
| 794 |
|
| 795 |
DPRINTF(port, "tag %d aio write %"PRId64"\n", |
| 796 |
ncq_tfs->tag, ncq_tfs->lba); |
| 797 |
|
| 798 |
dma_acct_start(ncq_tfs->drive->port.ifs[0].bs, &ncq_tfs->acct,
|
| 799 |
&ncq_tfs->sglist, BDRV_ACCT_WRITE); |
| 800 |
ncq_tfs->aiocb = dma_bdrv_write(ncq_tfs->drive->port.ifs[0].bs,
|
| 801 |
&ncq_tfs->sglist, ncq_tfs->lba, |
| 802 |
ncq_cb, ncq_tfs); |
| 803 |
break;
|
| 804 |
default:
|
| 805 |
DPRINTF(port, "error: tried to process non-NCQ command as NCQ\n");
|
| 806 |
qemu_sglist_destroy(&ncq_tfs->sglist); |
| 807 |
break;
|
| 808 |
} |
| 809 |
} |
| 810 |
|
| 811 |
static int handle_cmd(AHCIState *s, int port, int slot) |
| 812 |
{
|
| 813 |
IDEState *ide_state; |
| 814 |
uint32_t opts; |
| 815 |
uint64_t tbl_addr; |
| 816 |
AHCICmdHdr *cmd; |
| 817 |
uint8_t *cmd_fis; |
| 818 |
dma_addr_t cmd_len; |
| 819 |
|
| 820 |
if (s->dev[port].port.ifs[0].status & (BUSY_STAT|DRQ_STAT)) { |
| 821 |
/* Engine currently busy, try again later */
|
| 822 |
DPRINTF(port, "engine busy\n");
|
| 823 |
return -1; |
| 824 |
} |
| 825 |
|
| 826 |
cmd = &((AHCICmdHdr *)s->dev[port].lst)[slot]; |
| 827 |
|
| 828 |
if (!s->dev[port].lst) {
|
| 829 |
DPRINTF(port, "error: lst not given but cmd handled");
|
| 830 |
return -1; |
| 831 |
} |
| 832 |
|
| 833 |
/* remember current slot handle for later */
|
| 834 |
s->dev[port].cur_cmd = cmd; |
| 835 |
|
| 836 |
opts = le32_to_cpu(cmd->opts); |
| 837 |
tbl_addr = le64_to_cpu(cmd->tbl_addr); |
| 838 |
|
| 839 |
cmd_len = 0x80;
|
| 840 |
cmd_fis = dma_memory_map(s->dma, tbl_addr, &cmd_len, |
| 841 |
DMA_DIRECTION_FROM_DEVICE); |
| 842 |
|
| 843 |
if (!cmd_fis) {
|
| 844 |
DPRINTF(port, "error: guest passed us an invalid cmd fis\n");
|
| 845 |
return -1; |
| 846 |
} |
| 847 |
|
| 848 |
/* The device we are working for */
|
| 849 |
ide_state = &s->dev[port].port.ifs[0];
|
| 850 |
|
| 851 |
if (!ide_state->bs) {
|
| 852 |
DPRINTF(port, "error: guest accessed unused port");
|
| 853 |
goto out;
|
| 854 |
} |
| 855 |
|
| 856 |
debug_print_fis(cmd_fis, 0x90);
|
| 857 |
//debug_print_fis(cmd_fis, (opts & AHCI_CMD_HDR_CMD_FIS_LEN) * 4);
|
| 858 |
|
| 859 |
switch (cmd_fis[0]) { |
| 860 |
case SATA_FIS_TYPE_REGISTER_H2D:
|
| 861 |
break;
|
| 862 |
default:
|
| 863 |
DPRINTF(port, "unknown command cmd_fis[0]=%02x cmd_fis[1]=%02x "
|
| 864 |
"cmd_fis[2]=%02x\n", cmd_fis[0], cmd_fis[1], |
| 865 |
cmd_fis[2]);
|
| 866 |
goto out;
|
| 867 |
break;
|
| 868 |
} |
| 869 |
|
| 870 |
switch (cmd_fis[1]) { |
| 871 |
case SATA_FIS_REG_H2D_UPDATE_COMMAND_REGISTER:
|
| 872 |
break;
|
| 873 |
case 0: |
| 874 |
break;
|
| 875 |
default:
|
| 876 |
DPRINTF(port, "unknown command cmd_fis[0]=%02x cmd_fis[1]=%02x "
|
| 877 |
"cmd_fis[2]=%02x\n", cmd_fis[0], cmd_fis[1], |
| 878 |
cmd_fis[2]);
|
| 879 |
goto out;
|
| 880 |
break;
|
| 881 |
} |
| 882 |
|
| 883 |
switch (s->dev[port].port_state) {
|
| 884 |
case STATE_RUN:
|
| 885 |
if (cmd_fis[15] & ATA_SRST) { |
| 886 |
s->dev[port].port_state = STATE_RESET; |
| 887 |
} |
| 888 |
break;
|
| 889 |
case STATE_RESET:
|
| 890 |
if (!(cmd_fis[15] & ATA_SRST)) { |
| 891 |
ahci_reset_port(s, port); |
| 892 |
} |
| 893 |
break;
|
| 894 |
} |
| 895 |
|
| 896 |
if (cmd_fis[1] == SATA_FIS_REG_H2D_UPDATE_COMMAND_REGISTER) { |
| 897 |
|
| 898 |
/* Check for NCQ command */
|
| 899 |
if ((cmd_fis[2] == READ_FPDMA_QUEUED) || |
| 900 |
(cmd_fis[2] == WRITE_FPDMA_QUEUED)) {
|
| 901 |
process_ncq_command(s, port, cmd_fis, slot); |
| 902 |
goto out;
|
| 903 |
} |
| 904 |
|
| 905 |
/* Decompose the FIS */
|
| 906 |
ide_state->nsector = (int64_t)((cmd_fis[13] << 8) | cmd_fis[12]); |
| 907 |
ide_state->feature = cmd_fis[3];
|
| 908 |
if (!ide_state->nsector) {
|
| 909 |
ide_state->nsector = 256;
|
| 910 |
} |
| 911 |
|
| 912 |
if (ide_state->drive_kind != IDE_CD) {
|
| 913 |
/*
|
| 914 |
* We set the sector depending on the sector defined in the FIS.
|
| 915 |
* Unfortunately, the spec isn't exactly obvious on this one.
|
| 916 |
*
|
| 917 |
* Apparently LBA48 commands set fis bytes 10,9,8,6,5,4 to the
|
| 918 |
* 48 bit sector number. ATA_CMD_READ_DMA_EXT is an example for
|
| 919 |
* such a command.
|
| 920 |
*
|
| 921 |
* Non-LBA48 commands however use 7[lower 4 bits],6,5,4 to define a
|
| 922 |
* 28-bit sector number. ATA_CMD_READ_DMA is an example for such
|
| 923 |
* a command.
|
| 924 |
*
|
| 925 |
* Since the spec doesn't explicitly state what each field should
|
| 926 |
* do, I simply assume non-used fields as reserved and OR everything
|
| 927 |
* together, independent of the command.
|
| 928 |
*/
|
| 929 |
ide_set_sector(ide_state, ((uint64_t)cmd_fis[10] << 40) |
| 930 |
| ((uint64_t)cmd_fis[9] << 32) |
| 931 |
/* This is used for LBA48 commands */
|
| 932 |
| ((uint64_t)cmd_fis[8] << 24) |
| 933 |
/* This is used for non-LBA48 commands */
|
| 934 |
| ((uint64_t)(cmd_fis[7] & 0xf) << 24) |
| 935 |
| ((uint64_t)cmd_fis[6] << 16) |
| 936 |
| ((uint64_t)cmd_fis[5] << 8) |
| 937 |
| cmd_fis[4]);
|
| 938 |
} |
| 939 |
|
| 940 |
/* Copy the ACMD field (ATAPI packet, if any) from the AHCI command
|
| 941 |
* table to ide_state->io_buffer
|
| 942 |
*/
|
| 943 |
if (opts & AHCI_CMD_ATAPI) {
|
| 944 |
memcpy(ide_state->io_buffer, &cmd_fis[AHCI_COMMAND_TABLE_ACMD], 0x10);
|
| 945 |
ide_state->lcyl = 0x14;
|
| 946 |
ide_state->hcyl = 0xeb;
|
| 947 |
debug_print_fis(ide_state->io_buffer, 0x10);
|
| 948 |
ide_state->feature = IDE_FEATURE_DMA; |
| 949 |
s->dev[port].done_atapi_packet = 0;
|
| 950 |
/* XXX send PIO setup FIS */
|
| 951 |
} |
| 952 |
|
| 953 |
ide_state->error = 0;
|
| 954 |
|
| 955 |
/* Reset transferred byte counter */
|
| 956 |
cmd->status = 0;
|
| 957 |
|
| 958 |
/* We're ready to process the command in FIS byte 2. */
|
| 959 |
ide_exec_cmd(&s->dev[port].port, cmd_fis[2]);
|
| 960 |
|
| 961 |
if (s->dev[port].port.ifs[0].status & READY_STAT) { |
| 962 |
ahci_write_fis_d2h(&s->dev[port], cmd_fis); |
| 963 |
} |
| 964 |
} |
| 965 |
|
| 966 |
out:
|
| 967 |
dma_memory_unmap(s->dma, cmd_fis, cmd_len, DMA_DIRECTION_FROM_DEVICE, |
| 968 |
cmd_len); |
| 969 |
|
| 970 |
if (s->dev[port].port.ifs[0].status & (BUSY_STAT|DRQ_STAT)) { |
| 971 |
/* async command, complete later */
|
| 972 |
s->dev[port].busy_slot = slot; |
| 973 |
return -1; |
| 974 |
} |
| 975 |
|
| 976 |
/* done handling the command */
|
| 977 |
return 0; |
| 978 |
} |
| 979 |
|
| 980 |
/* DMA dev <-> ram */
|
| 981 |
static int ahci_start_transfer(IDEDMA *dma) |
| 982 |
{
|
| 983 |
AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); |
| 984 |
IDEState *s = &ad->port.ifs[0];
|
| 985 |
uint32_t size = (uint32_t)(s->data_end - s->data_ptr); |
| 986 |
/* write == ram -> device */
|
| 987 |
uint32_t opts = le32_to_cpu(ad->cur_cmd->opts); |
| 988 |
int is_write = opts & AHCI_CMD_WRITE;
|
| 989 |
int is_atapi = opts & AHCI_CMD_ATAPI;
|
| 990 |
int has_sglist = 0; |
| 991 |
|
| 992 |
if (is_atapi && !ad->done_atapi_packet) {
|
| 993 |
/* already prepopulated iobuffer */
|
| 994 |
ad->done_atapi_packet = 1;
|
| 995 |
goto out;
|
| 996 |
} |
| 997 |
|
| 998 |
if (!ahci_populate_sglist(ad, &s->sg, 0)) { |
| 999 |
has_sglist = 1;
|
| 1000 |
} |
| 1001 |
|
| 1002 |
DPRINTF(ad->port_no, "%sing %d bytes on %s w/%s sglist\n",
|
| 1003 |
is_write ? "writ" : "read", size, is_atapi ? "atapi" : "ata", |
| 1004 |
has_sglist ? "" : "o"); |
| 1005 |
|
| 1006 |
if (has_sglist && size) {
|
| 1007 |
if (is_write) {
|
| 1008 |
dma_buf_write(s->data_ptr, size, &s->sg); |
| 1009 |
} else {
|
| 1010 |
dma_buf_read(s->data_ptr, size, &s->sg); |
| 1011 |
} |
| 1012 |
} |
| 1013 |
|
| 1014 |
/* update number of transferred bytes */
|
| 1015 |
ad->cur_cmd->status = cpu_to_le32(le32_to_cpu(ad->cur_cmd->status) + size); |
| 1016 |
|
| 1017 |
out:
|
| 1018 |
/* declare that we processed everything */
|
| 1019 |
s->data_ptr = s->data_end; |
| 1020 |
|
| 1021 |
if (has_sglist) {
|
| 1022 |
qemu_sglist_destroy(&s->sg); |
| 1023 |
} |
| 1024 |
|
| 1025 |
s->end_transfer_func(s); |
| 1026 |
|
| 1027 |
if (!(s->status & DRQ_STAT)) {
|
| 1028 |
/* done with DMA */
|
| 1029 |
ahci_trigger_irq(ad->hba, ad, PORT_IRQ_STAT_DSS); |
| 1030 |
} |
| 1031 |
|
| 1032 |
return 0; |
| 1033 |
} |
| 1034 |
|
| 1035 |
static void ahci_start_dma(IDEDMA *dma, IDEState *s, |
| 1036 |
BlockDriverCompletionFunc *dma_cb) |
| 1037 |
{
|
| 1038 |
AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); |
| 1039 |
|
| 1040 |
DPRINTF(ad->port_no, "\n");
|
| 1041 |
ad->dma_cb = dma_cb; |
| 1042 |
ad->dma_status |= BM_STATUS_DMAING; |
| 1043 |
s->io_buffer_offset = 0;
|
| 1044 |
dma_cb(s, 0);
|
| 1045 |
} |
| 1046 |
|
| 1047 |
static int ahci_dma_prepare_buf(IDEDMA *dma, int is_write) |
| 1048 |
{
|
| 1049 |
AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); |
| 1050 |
IDEState *s = &ad->port.ifs[0];
|
| 1051 |
|
| 1052 |
ahci_populate_sglist(ad, &s->sg, 0);
|
| 1053 |
s->io_buffer_size = s->sg.size; |
| 1054 |
|
| 1055 |
DPRINTF(ad->port_no, "len=%#x\n", s->io_buffer_size);
|
| 1056 |
return s->io_buffer_size != 0; |
| 1057 |
} |
| 1058 |
|
| 1059 |
static int ahci_dma_rw_buf(IDEDMA *dma, int is_write) |
| 1060 |
{
|
| 1061 |
AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); |
| 1062 |
IDEState *s = &ad->port.ifs[0];
|
| 1063 |
uint8_t *p = s->io_buffer + s->io_buffer_index; |
| 1064 |
int l = s->io_buffer_size - s->io_buffer_index;
|
| 1065 |
|
| 1066 |
if (ahci_populate_sglist(ad, &s->sg, s->io_buffer_offset)) {
|
| 1067 |
return 0; |
| 1068 |
} |
| 1069 |
|
| 1070 |
if (is_write) {
|
| 1071 |
dma_buf_read(p, l, &s->sg); |
| 1072 |
} else {
|
| 1073 |
dma_buf_write(p, l, &s->sg); |
| 1074 |
} |
| 1075 |
|
| 1076 |
/* free sglist that was created in ahci_populate_sglist() */
|
| 1077 |
qemu_sglist_destroy(&s->sg); |
| 1078 |
|
| 1079 |
/* update number of transferred bytes */
|
| 1080 |
ad->cur_cmd->status = cpu_to_le32(le32_to_cpu(ad->cur_cmd->status) + l); |
| 1081 |
s->io_buffer_index += l; |
| 1082 |
s->io_buffer_offset += l; |
| 1083 |
|
| 1084 |
DPRINTF(ad->port_no, "len=%#x\n", l);
|
| 1085 |
|
| 1086 |
return 1; |
| 1087 |
} |
| 1088 |
|
| 1089 |
static int ahci_dma_set_unit(IDEDMA *dma, int unit) |
| 1090 |
{
|
| 1091 |
/* only a single unit per link */
|
| 1092 |
return 0; |
| 1093 |
} |
| 1094 |
|
| 1095 |
static int ahci_dma_add_status(IDEDMA *dma, int status) |
| 1096 |
{
|
| 1097 |
AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); |
| 1098 |
ad->dma_status |= status; |
| 1099 |
DPRINTF(ad->port_no, "set status: %x\n", status);
|
| 1100 |
|
| 1101 |
if (status & BM_STATUS_INT) {
|
| 1102 |
ahci_trigger_irq(ad->hba, ad, PORT_IRQ_STAT_DSS); |
| 1103 |
} |
| 1104 |
|
| 1105 |
return 0; |
| 1106 |
} |
| 1107 |
|
| 1108 |
static int ahci_dma_set_inactive(IDEDMA *dma) |
| 1109 |
{
|
| 1110 |
AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); |
| 1111 |
|
| 1112 |
DPRINTF(ad->port_no, "dma done\n");
|
| 1113 |
|
| 1114 |
/* update d2h status */
|
| 1115 |
ahci_write_fis_d2h(ad, NULL);
|
| 1116 |
|
| 1117 |
ad->dma_cb = NULL;
|
| 1118 |
|
| 1119 |
if (!ad->check_bh) {
|
| 1120 |
/* maybe we still have something to process, check later */
|
| 1121 |
ad->check_bh = qemu_bh_new(ahci_check_cmd_bh, ad); |
| 1122 |
qemu_bh_schedule(ad->check_bh); |
| 1123 |
} |
| 1124 |
|
| 1125 |
return 0; |
| 1126 |
} |
| 1127 |
|
| 1128 |
static void ahci_irq_set(void *opaque, int n, int level) |
| 1129 |
{
|
| 1130 |
} |
| 1131 |
|
| 1132 |
static void ahci_dma_restart_cb(void *opaque, int running, RunState state) |
| 1133 |
{
|
| 1134 |
} |
| 1135 |
|
| 1136 |
static int ahci_dma_reset(IDEDMA *dma) |
| 1137 |
{
|
| 1138 |
return 0; |
| 1139 |
} |
| 1140 |
|
| 1141 |
static const IDEDMAOps ahci_dma_ops = { |
| 1142 |
.start_dma = ahci_start_dma, |
| 1143 |
.start_transfer = ahci_start_transfer, |
| 1144 |
.prepare_buf = ahci_dma_prepare_buf, |
| 1145 |
.rw_buf = ahci_dma_rw_buf, |
| 1146 |
.set_unit = ahci_dma_set_unit, |
| 1147 |
.add_status = ahci_dma_add_status, |
| 1148 |
.set_inactive = ahci_dma_set_inactive, |
| 1149 |
.restart_cb = ahci_dma_restart_cb, |
| 1150 |
.reset = ahci_dma_reset, |
| 1151 |
}; |
| 1152 |
|
| 1153 |
void ahci_init(AHCIState *s, DeviceState *qdev, DMAContext *dma, int ports) |
| 1154 |
{
|
| 1155 |
qemu_irq *irqs; |
| 1156 |
int i;
|
| 1157 |
|
| 1158 |
s->dma = dma; |
| 1159 |
s->ports = ports; |
| 1160 |
s->dev = g_malloc0(sizeof(AHCIDevice) * ports);
|
| 1161 |
ahci_reg_init(s); |
| 1162 |
/* XXX BAR size should be 1k, but that breaks, so bump it to 4k for now */
|
| 1163 |
memory_region_init_io(&s->mem, &ahci_mem_ops, s, "ahci", AHCI_MEM_BAR_SIZE);
|
| 1164 |
memory_region_init_io(&s->idp, &ahci_idp_ops, s, "ahci-idp", 32); |
| 1165 |
|
| 1166 |
irqs = qemu_allocate_irqs(ahci_irq_set, s, s->ports); |
| 1167 |
|
| 1168 |
for (i = 0; i < s->ports; i++) { |
| 1169 |
AHCIDevice *ad = &s->dev[i]; |
| 1170 |
|
| 1171 |
ide_bus_new(&ad->port, qdev, i); |
| 1172 |
ide_init2(&ad->port, irqs[i]); |
| 1173 |
|
| 1174 |
ad->hba = s; |
| 1175 |
ad->port_no = i; |
| 1176 |
ad->port.dma = &ad->dma; |
| 1177 |
ad->port.dma->ops = &ahci_dma_ops; |
| 1178 |
ad->port_regs.cmd = PORT_CMD_SPIN_UP | PORT_CMD_POWER_ON; |
| 1179 |
} |
| 1180 |
} |
| 1181 |
|
| 1182 |
void ahci_uninit(AHCIState *s)
|
| 1183 |
{
|
| 1184 |
memory_region_destroy(&s->mem); |
| 1185 |
memory_region_destroy(&s->idp); |
| 1186 |
g_free(s->dev); |
| 1187 |
} |
| 1188 |
|
| 1189 |
void ahci_reset(AHCIState *s)
|
| 1190 |
{
|
| 1191 |
AHCIPortRegs *pr; |
| 1192 |
int i;
|
| 1193 |
|
| 1194 |
s->control_regs.irqstatus = 0;
|
| 1195 |
s->control_regs.ghc = 0;
|
| 1196 |
|
| 1197 |
for (i = 0; i < s->ports; i++) { |
| 1198 |
pr = &s->dev[i].port_regs; |
| 1199 |
pr->irq_stat = 0;
|
| 1200 |
pr->irq_mask = 0;
|
| 1201 |
pr->scr_ctl = 0;
|
| 1202 |
ahci_reset_port(s, i); |
| 1203 |
} |
| 1204 |
} |
| 1205 |
|
| 1206 |
typedef struct SysbusAHCIState { |
| 1207 |
SysBusDevice busdev; |
| 1208 |
AHCIState ahci; |
| 1209 |
uint32_t num_ports; |
| 1210 |
} SysbusAHCIState; |
| 1211 |
|
| 1212 |
static const VMStateDescription vmstate_sysbus_ahci = { |
| 1213 |
.name = "sysbus-ahci",
|
| 1214 |
.unmigratable = 1,
|
| 1215 |
}; |
| 1216 |
|
| 1217 |
static void sysbus_ahci_reset(DeviceState *dev) |
| 1218 |
{
|
| 1219 |
SysbusAHCIState *s = DO_UPCAST(SysbusAHCIState, busdev.qdev, dev); |
| 1220 |
|
| 1221 |
ahci_reset(&s->ahci); |
| 1222 |
} |
| 1223 |
|
| 1224 |
static int sysbus_ahci_init(SysBusDevice *dev) |
| 1225 |
{
|
| 1226 |
SysbusAHCIState *s = FROM_SYSBUS(SysbusAHCIState, dev); |
| 1227 |
ahci_init(&s->ahci, &dev->qdev, NULL, s->num_ports);
|
| 1228 |
|
| 1229 |
sysbus_init_mmio(dev, &s->ahci.mem); |
| 1230 |
sysbus_init_irq(dev, &s->ahci.irq); |
| 1231 |
return 0; |
| 1232 |
} |
| 1233 |
|
| 1234 |
static Property sysbus_ahci_properties[] = {
|
| 1235 |
DEFINE_PROP_UINT32("num-ports", SysbusAHCIState, num_ports, 1), |
| 1236 |
DEFINE_PROP_END_OF_LIST(), |
| 1237 |
}; |
| 1238 |
|
| 1239 |
static void sysbus_ahci_class_init(ObjectClass *klass, void *data) |
| 1240 |
{
|
| 1241 |
SysBusDeviceClass *sbc = SYS_BUS_DEVICE_CLASS(klass); |
| 1242 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1243 |
|
| 1244 |
sbc->init = sysbus_ahci_init; |
| 1245 |
dc->vmsd = &vmstate_sysbus_ahci; |
| 1246 |
dc->props = sysbus_ahci_properties; |
| 1247 |
dc->reset = sysbus_ahci_reset; |
| 1248 |
} |
| 1249 |
|
| 1250 |
static TypeInfo sysbus_ahci_info = {
|
| 1251 |
.name = "sysbus-ahci",
|
| 1252 |
.parent = TYPE_SYS_BUS_DEVICE, |
| 1253 |
.instance_size = sizeof(SysbusAHCIState),
|
| 1254 |
.class_init = sysbus_ahci_class_init, |
| 1255 |
}; |
| 1256 |
|
| 1257 |
static void sysbus_ahci_register_types(void) |
| 1258 |
{
|
| 1259 |
type_register_static(&sysbus_ahci_info); |
| 1260 |
} |
| 1261 |
|
| 1262 |
type_init(sysbus_ahci_register_types) |