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- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/pci.h>
- #include <linux/blkdev.h>
- #include <linux/delay.h>
- #include <linux/interrupt.h>
- #include <linux/dma-mapping.h>
- #include <linux/device.h>
- #include <linux/dmi.h>
- #include <linux/gfp.h>
- #include <scsi/scsi_host.h>
- #include <scsi/scsi_cmnd.h>
- #include <linux/libata.h>
- #include "ahci.h"
- #define DRV_NAME "acard-ahci"
- #define DRV_VERSION "1.0"
- #define ACARD_AHCI_RX_FIS_SZ 128
- enum {
- AHCI_PCI_BAR = 5,
- };
- enum board_ids {
- board_acard_ahci,
- };
- struct acard_sg {
- __le32 addr;
- __le32 addr_hi;
- __le32 reserved;
- __le32 size;
- };
- static void acard_ahci_qc_prep(struct ata_queued_cmd *qc);
- static bool acard_ahci_qc_fill_rtf(struct ata_queued_cmd *qc);
- static int acard_ahci_port_start(struct ata_port *ap);
- static int acard_ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
- #ifdef CONFIG_PM_SLEEP
- static int acard_ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
- static int acard_ahci_pci_device_resume(struct pci_dev *pdev);
- #endif
- static struct scsi_host_template acard_ahci_sht = {
- AHCI_SHT("acard-ahci"),
- };
- static struct ata_port_operations acard_ops = {
- .inherits = &ahci_ops,
- .qc_prep = acard_ahci_qc_prep,
- .qc_fill_rtf = acard_ahci_qc_fill_rtf,
- .port_start = acard_ahci_port_start,
- };
- #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
- static const struct ata_port_info acard_ahci_port_info[] = {
- [board_acard_ahci] =
- {
- AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ),
- .flags = AHCI_FLAG_COMMON,
- .pio_mask = ATA_PIO4,
- .udma_mask = ATA_UDMA6,
- .port_ops = &acard_ops,
- },
- };
- static const struct pci_device_id acard_ahci_pci_tbl[] = {
-
- { PCI_VDEVICE(ARTOP, 0x000d), board_acard_ahci },
- { }
- };
- static struct pci_driver acard_ahci_pci_driver = {
- .name = DRV_NAME,
- .id_table = acard_ahci_pci_tbl,
- .probe = acard_ahci_init_one,
- .remove = ata_pci_remove_one,
- #ifdef CONFIG_PM_SLEEP
- .suspend = acard_ahci_pci_device_suspend,
- .resume = acard_ahci_pci_device_resume,
- #endif
- };
- #ifdef CONFIG_PM_SLEEP
- static int acard_ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
- {
- struct ata_host *host = pci_get_drvdata(pdev);
- struct ahci_host_priv *hpriv = host->private_data;
- void __iomem *mmio = hpriv->mmio;
- u32 ctl;
- if (mesg.event & PM_EVENT_SUSPEND &&
- hpriv->flags & AHCI_HFLAG_NO_SUSPEND) {
- dev_err(&pdev->dev,
- "BIOS update required for suspend/resume\n");
- return -EIO;
- }
- if (mesg.event & PM_EVENT_SLEEP) {
-
- ctl = readl(mmio + HOST_CTL);
- ctl &= ~HOST_IRQ_EN;
- writel(ctl, mmio + HOST_CTL);
- readl(mmio + HOST_CTL);
- }
- return ata_pci_device_suspend(pdev, mesg);
- }
- static int acard_ahci_pci_device_resume(struct pci_dev *pdev)
- {
- struct ata_host *host = pci_get_drvdata(pdev);
- int rc;
- rc = ata_pci_device_do_resume(pdev);
- if (rc)
- return rc;
- if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
- rc = ahci_reset_controller(host);
- if (rc)
- return rc;
- ahci_init_controller(host);
- }
- ata_host_resume(host);
- return 0;
- }
- #endif
- static int acard_ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
- {
- int rc;
- if (using_dac &&
- !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
- rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
- if (rc) {
- rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (rc) {
- dev_err(&pdev->dev,
- "64-bit DMA enable failed\n");
- return rc;
- }
- }
- } else {
- rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (rc) {
- dev_err(&pdev->dev, "32-bit DMA enable failed\n");
- return rc;
- }
- rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (rc) {
- dev_err(&pdev->dev,
- "32-bit consistent DMA enable failed\n");
- return rc;
- }
- }
- return 0;
- }
- static void acard_ahci_pci_print_info(struct ata_host *host)
- {
- struct pci_dev *pdev = to_pci_dev(host->dev);
- u16 cc;
- const char *scc_s;
- pci_read_config_word(pdev, 0x0a, &cc);
- if (cc == PCI_CLASS_STORAGE_IDE)
- scc_s = "IDE";
- else if (cc == PCI_CLASS_STORAGE_SATA)
- scc_s = "SATA";
- else if (cc == PCI_CLASS_STORAGE_RAID)
- scc_s = "RAID";
- else
- scc_s = "unknown";
- ahci_print_info(host, scc_s);
- }
- static unsigned int acard_ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
- {
- struct scatterlist *sg;
- struct acard_sg *acard_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
- unsigned int si, last_si = 0;
- VPRINTK("ENTER\n");
-
- for_each_sg(qc->sg, sg, qc->n_elem, si) {
- dma_addr_t addr = sg_dma_address(sg);
- u32 sg_len = sg_dma_len(sg);
-
- acard_sg[si].addr = cpu_to_le32(addr & 0xffffffff);
- acard_sg[si].addr_hi = cpu_to_le32((addr >> 16) >> 16);
- acard_sg[si].size = cpu_to_le32(sg_len);
- last_si = si;
- }
- acard_sg[last_si].size |= cpu_to_le32(1 << 31);
- return si;
- }
- static void acard_ahci_qc_prep(struct ata_queued_cmd *qc)
- {
- struct ata_port *ap = qc->ap;
- struct ahci_port_priv *pp = ap->private_data;
- int is_atapi = ata_is_atapi(qc->tf.protocol);
- void *cmd_tbl;
- u32 opts;
- const u32 cmd_fis_len = 5;
- unsigned int n_elem;
-
- cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
- ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, cmd_tbl);
- if (is_atapi) {
- memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
- memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
- }
- n_elem = 0;
- if (qc->flags & ATA_QCFLAG_DMAMAP)
- n_elem = acard_ahci_fill_sg(qc, cmd_tbl);
-
- opts = cmd_fis_len | (qc->dev->link->pmp << 12);
- if (qc->tf.flags & ATA_TFLAG_WRITE)
- opts |= AHCI_CMD_WRITE;
- if (is_atapi)
- opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
- ahci_fill_cmd_slot(pp, qc->tag, opts);
- }
- static bool acard_ahci_qc_fill_rtf(struct ata_queued_cmd *qc)
- {
- struct ahci_port_priv *pp = qc->ap->private_data;
- u8 *rx_fis = pp->rx_fis;
- if (pp->fbs_enabled)
- rx_fis += qc->dev->link->pmp * ACARD_AHCI_RX_FIS_SZ;
-
- if (qc->tf.protocol == ATA_PROT_PIO && qc->dma_dir == DMA_FROM_DEVICE &&
- !(qc->flags & ATA_QCFLAG_FAILED)) {
- ata_tf_from_fis(rx_fis + RX_FIS_PIO_SETUP, &qc->result_tf);
- qc->result_tf.command = (rx_fis + RX_FIS_PIO_SETUP)[15];
- } else
- ata_tf_from_fis(rx_fis + RX_FIS_D2H_REG, &qc->result_tf);
- return true;
- }
- static int acard_ahci_port_start(struct ata_port *ap)
- {
- struct ahci_host_priv *hpriv = ap->host->private_data;
- struct device *dev = ap->host->dev;
- struct ahci_port_priv *pp;
- void *mem;
- dma_addr_t mem_dma;
- size_t dma_sz, rx_fis_sz;
- pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
- if (!pp)
- return -ENOMEM;
-
- if ((hpriv->cap & HOST_CAP_FBS) && sata_pmp_supported(ap)) {
- void __iomem *port_mmio = ahci_port_base(ap);
- u32 cmd = readl(port_mmio + PORT_CMD);
- if (cmd & PORT_CMD_FBSCP)
- pp->fbs_supported = true;
- else if (hpriv->flags & AHCI_HFLAG_YES_FBS) {
- dev_info(dev, "port %d can do FBS, forcing FBSCP\n",
- ap->port_no);
- pp->fbs_supported = true;
- } else
- dev_warn(dev, "port %d is not capable of FBS\n",
- ap->port_no);
- }
- if (pp->fbs_supported) {
- dma_sz = AHCI_PORT_PRIV_FBS_DMA_SZ;
- rx_fis_sz = ACARD_AHCI_RX_FIS_SZ * 16;
- } else {
- dma_sz = AHCI_PORT_PRIV_DMA_SZ;
- rx_fis_sz = ACARD_AHCI_RX_FIS_SZ;
- }
- mem = dmam_alloc_coherent(dev, dma_sz, &mem_dma, GFP_KERNEL);
- if (!mem)
- return -ENOMEM;
- memset(mem, 0, dma_sz);
-
- pp->cmd_slot = mem;
- pp->cmd_slot_dma = mem_dma;
- mem += AHCI_CMD_SLOT_SZ;
- mem_dma += AHCI_CMD_SLOT_SZ;
-
- pp->rx_fis = mem;
- pp->rx_fis_dma = mem_dma;
- mem += rx_fis_sz;
- mem_dma += rx_fis_sz;
-
- pp->cmd_tbl = mem;
- pp->cmd_tbl_dma = mem_dma;
-
- pp->intr_mask = DEF_PORT_IRQ;
- ap->private_data = pp;
-
- return ahci_port_resume(ap);
- }
- static int acard_ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
- {
- unsigned int board_id = ent->driver_data;
- struct ata_port_info pi = acard_ahci_port_info[board_id];
- const struct ata_port_info *ppi[] = { &pi, NULL };
- struct device *dev = &pdev->dev;
- struct ahci_host_priv *hpriv;
- struct ata_host *host;
- int n_ports, i, rc;
- VPRINTK("ENTER\n");
- WARN_ON((int)ATA_MAX_QUEUE > AHCI_MAX_CMDS);
- ata_print_version_once(&pdev->dev, DRV_VERSION);
-
- rc = pcim_enable_device(pdev);
- if (rc)
- return rc;
-
- rc = pcim_iomap_regions_request_all(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
- if (rc == -EBUSY)
- pcim_pin_device(pdev);
- if (rc)
- return rc;
- hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
- if (!hpriv)
- return -ENOMEM;
- hpriv->irq = pdev->irq;
- hpriv->flags |= (unsigned long)pi.private_data;
- if (!(hpriv->flags & AHCI_HFLAG_NO_MSI))
- pci_enable_msi(pdev);
- hpriv->mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
-
- ahci_save_initial_config(&pdev->dev, hpriv);
-
- if (hpriv->cap & HOST_CAP_NCQ)
- pi.flags |= ATA_FLAG_NCQ;
- if (hpriv->cap & HOST_CAP_PMP)
- pi.flags |= ATA_FLAG_PMP;
- ahci_set_em_messages(hpriv, &pi);
-
- n_ports = max(ahci_nr_ports(hpriv->cap), fls(hpriv->port_map));
- host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
- if (!host)
- return -ENOMEM;
- host->private_data = hpriv;
- if (!(hpriv->cap & HOST_CAP_SSS) || ahci_ignore_sss)
- host->flags |= ATA_HOST_PARALLEL_SCAN;
- else
- printk(KERN_INFO "ahci: SSS flag set, parallel bus scan disabled\n");
- for (i = 0; i < host->n_ports; i++) {
- struct ata_port *ap = host->ports[i];
- ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");
- ata_port_pbar_desc(ap, AHCI_PCI_BAR,
- 0x100 + ap->port_no * 0x80, "port");
-
-
-
- if (!(hpriv->port_map & (1 << i)))
- ap->ops = &ata_dummy_port_ops;
- }
-
- rc = acard_ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
- if (rc)
- return rc;
- rc = ahci_reset_controller(host);
- if (rc)
- return rc;
- ahci_init_controller(host);
- acard_ahci_pci_print_info(host);
- pci_set_master(pdev);
- return ahci_host_activate(host, &acard_ahci_sht);
- }
- module_pci_driver(acard_ahci_pci_driver);
- MODULE_AUTHOR("Jeff Garzik");
- MODULE_DESCRIPTION("ACard AHCI SATA low-level driver");
- MODULE_LICENSE("GPL");
- MODULE_DEVICE_TABLE(pci, acard_ahci_pci_tbl);
- MODULE_VERSION(DRV_VERSION);
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