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[PATCH] ahci: honor PORTS_IMPL on ICH8s
Some ICH8s use non-linear port mapping. ahci driver didn't use to honor PORTS_IMPL and this made ports after hole nonfunctional. This patch makes ahci mark those ports as dummy and properly initialize all the implemented ports after the dummies. As it's unknown whether other AHCIs implement PORTS_IMPL register properly, new board id board_ahci_pi is added and selectively applied to ICH8s. All other AHCIs continue to use linear mapping regardless of PORTS_IMPL value. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Robin H. Johnson <robbat2@gentoo.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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@ -53,6 +53,7 @@
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enum {
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AHCI_PCI_BAR = 5,
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AHCI_MAX_PORTS = 32,
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AHCI_MAX_SG = 168, /* hardware max is 64K */
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AHCI_DMA_BOUNDARY = 0xffffffff,
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AHCI_USE_CLUSTERING = 0,
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@ -77,8 +78,9 @@ enum {
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RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
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board_ahci = 0,
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board_ahci_vt8251 = 1,
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board_ahci_ign_iferr = 2,
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board_ahci_pi = 1,
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board_ahci_vt8251 = 2,
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board_ahci_ign_iferr = 3,
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/* global controller registers */
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HOST_CAP = 0x00, /* host capabilities */
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@ -169,6 +171,7 @@ enum {
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/* ap->flags bits */
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AHCI_FLAG_NO_NCQ = (1 << 24),
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AHCI_FLAG_IGN_IRQ_IF_ERR = (1 << 25), /* ignore IRQ_IF_ERR */
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AHCI_FLAG_HONOR_PI = (1 << 26), /* honor PORTS_IMPL */
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};
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struct ahci_cmd_hdr {
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@ -317,6 +320,16 @@ static const struct ata_port_info ahci_port_info[] = {
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.udma_mask = 0x7f, /* udma0-6 ; FIXME */
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.port_ops = &ahci_ops,
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},
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/* board_ahci_pi */
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{
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.sht = &ahci_sht,
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.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
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ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
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ATA_FLAG_SKIP_D2H_BSY | AHCI_FLAG_HONOR_PI,
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.pio_mask = 0x1f, /* pio0-4 */
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.udma_mask = 0x7f, /* udma0-6 ; FIXME */
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.port_ops = &ahci_ops,
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},
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/* board_ahci_vt8251 */
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{
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.sht = &ahci_sht,
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@ -353,22 +366,22 @@ static const struct pci_device_id ahci_pci_tbl[] = {
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{ PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
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{ PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
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{ PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
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{ PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
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{ PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* ICH8 */
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{ PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
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{ PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
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{ PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
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{ PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x2929), board_ahci }, /* ICH9M */
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{ PCI_VDEVICE(INTEL, 0x292a), board_ahci }, /* ICH9M */
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{ PCI_VDEVICE(INTEL, 0x292b), board_ahci }, /* ICH9M */
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{ PCI_VDEVICE(INTEL, 0x292f), board_ahci }, /* ICH9M */
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{ PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */
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{ PCI_VDEVICE(INTEL, 0x2821), board_ahci_pi }, /* ICH8 */
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{ PCI_VDEVICE(INTEL, 0x2822), board_ahci_pi }, /* ICH8 */
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{ PCI_VDEVICE(INTEL, 0x2824), board_ahci_pi }, /* ICH8 */
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{ PCI_VDEVICE(INTEL, 0x2829), board_ahci_pi }, /* ICH8M */
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{ PCI_VDEVICE(INTEL, 0x282a), board_ahci_pi }, /* ICH8M */
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{ PCI_VDEVICE(INTEL, 0x2922), board_ahci_pi }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x2923), board_ahci_pi }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x2924), board_ahci_pi }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x2925), board_ahci_pi }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x2927), board_ahci_pi }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x2929), board_ahci_pi }, /* ICH9M */
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{ PCI_VDEVICE(INTEL, 0x292a), board_ahci_pi }, /* ICH9M */
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{ PCI_VDEVICE(INTEL, 0x292b), board_ahci_pi }, /* ICH9M */
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{ PCI_VDEVICE(INTEL, 0x292f), board_ahci_pi }, /* ICH9M */
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{ PCI_VDEVICE(INTEL, 0x294d), board_ahci_pi }, /* ICH9 */
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{ PCI_VDEVICE(INTEL, 0x294e), board_ahci_pi }, /* ICH9M */
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/* JMicron */
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{ PCI_VDEVICE(JMICRON, 0x2360), board_ahci_ign_iferr }, /* JMB360 */
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@ -691,7 +704,8 @@ static int ahci_reset_controller(void __iomem *mmio, struct pci_dev *pdev)
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}
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static void ahci_init_controller(void __iomem *mmio, struct pci_dev *pdev,
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int n_ports, u32 cap)
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int n_ports, unsigned int port_flags,
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struct ahci_host_priv *hpriv)
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{
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int i, rc;
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u32 tmp;
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@ -700,13 +714,12 @@ static void ahci_init_controller(void __iomem *mmio, struct pci_dev *pdev,
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void __iomem *port_mmio = ahci_port_base(mmio, i);
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const char *emsg = NULL;
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#if 0 /* BIOSen initialize this incorrectly */
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if (!(hpriv->port_map & (1 << i)))
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if ((port_flags & AHCI_FLAG_HONOR_PI) &&
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!(hpriv->port_map & (1 << i)))
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continue;
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#endif
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/* make sure port is not active */
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rc = ahci_deinit_port(port_mmio, cap, &emsg);
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rc = ahci_deinit_port(port_mmio, hpriv->cap, &emsg);
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if (rc)
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dev_printk(KERN_WARNING, &pdev->dev,
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"%s (%d)\n", emsg, rc);
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@ -1363,7 +1376,8 @@ static int ahci_pci_device_resume(struct pci_dev *pdev)
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if (rc)
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return rc;
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ahci_init_controller(mmio, pdev, host->n_ports, hpriv->cap);
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ahci_init_controller(mmio, pdev, host->n_ports,
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host->ports[0]->flags, hpriv);
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}
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ata_host_resume(host);
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@ -1475,7 +1489,7 @@ static int ahci_host_init(struct ata_probe_ent *probe_ent)
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struct ahci_host_priv *hpriv = probe_ent->private_data;
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struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
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void __iomem *mmio = probe_ent->mmio_base;
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unsigned int i, using_dac;
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unsigned int i, cap_n_ports, using_dac;
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int rc;
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rc = ahci_reset_controller(mmio, pdev);
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@ -1484,10 +1498,34 @@ static int ahci_host_init(struct ata_probe_ent *probe_ent)
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hpriv->cap = readl(mmio + HOST_CAP);
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hpriv->port_map = readl(mmio + HOST_PORTS_IMPL);
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probe_ent->n_ports = ahci_nr_ports(hpriv->cap);
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cap_n_ports = ahci_nr_ports(hpriv->cap);
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VPRINTK("cap 0x%x port_map 0x%x n_ports %d\n",
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hpriv->cap, hpriv->port_map, probe_ent->n_ports);
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hpriv->cap, hpriv->port_map, cap_n_ports);
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if (probe_ent->port_flags & AHCI_FLAG_HONOR_PI) {
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unsigned int n_ports = cap_n_ports;
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u32 port_map = hpriv->port_map;
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int max_port = 0;
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for (i = 0; i < AHCI_MAX_PORTS && n_ports; i++) {
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if (port_map & (1 << i)) {
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n_ports--;
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port_map &= ~(1 << i);
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max_port = i;
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} else
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probe_ent->dummy_port_mask |= 1 << i;
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}
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if (n_ports || port_map)
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dev_printk(KERN_WARNING, &pdev->dev,
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"nr_ports (%u) and implemented port map "
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"(0x%x) don't match\n",
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cap_n_ports, hpriv->port_map);
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probe_ent->n_ports = max_port + 1;
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} else
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probe_ent->n_ports = cap_n_ports;
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using_dac = hpriv->cap & HOST_CAP_64;
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if (using_dac &&
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@ -1519,7 +1557,8 @@ static int ahci_host_init(struct ata_probe_ent *probe_ent)
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for (i = 0; i < probe_ent->n_ports; i++)
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ahci_setup_port(&probe_ent->port[i], (unsigned long) mmio, i);
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ahci_init_controller(mmio, pdev, probe_ent->n_ports, hpriv->cap);
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ahci_init_controller(mmio, pdev, probe_ent->n_ports,
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probe_ent->port_flags, hpriv);
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pci_set_master(pdev);
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