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- /*
- * Aic94xx SAS/SATA driver hardware interface.
- *
- * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
- * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
- *
- * This file is licensed under GPLv2.
- *
- * This file is part of the aic94xx driver.
- *
- * The aic94xx driver is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of the
- * License.
- *
- * The aic94xx driver is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with the aic94xx driver; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- */
- #include <linux/pci.h>
- #include <linux/slab.h>
- #include <linux/delay.h>
- #include <linux/module.h>
- #include <linux/firmware.h>
- #include "aic94xx.h"
- #include "aic94xx_reg.h"
- #include "aic94xx_hwi.h"
- #include "aic94xx_seq.h"
- #include "aic94xx_dump.h"
- u32 MBAR0_SWB_SIZE;
- /* ---------- Initialization ---------- */
- static int asd_get_user_sas_addr(struct asd_ha_struct *asd_ha)
- {
- /* adapter came with a sas address */
- if (asd_ha->hw_prof.sas_addr[0])
- return 0;
- return sas_request_addr(asd_ha->sas_ha.core.shost,
- asd_ha->hw_prof.sas_addr);
- }
- static void asd_propagate_sas_addr(struct asd_ha_struct *asd_ha)
- {
- int i;
- for (i = 0; i < ASD_MAX_PHYS; i++) {
- if (asd_ha->hw_prof.phy_desc[i].sas_addr[0] == 0)
- continue;
- /* Set a phy's address only if it has none.
- */
- ASD_DPRINTK("setting phy%d addr to %llx\n", i,
- SAS_ADDR(asd_ha->hw_prof.sas_addr));
- memcpy(asd_ha->hw_prof.phy_desc[i].sas_addr,
- asd_ha->hw_prof.sas_addr, SAS_ADDR_SIZE);
- }
- }
- /* ---------- PHY initialization ---------- */
- static void asd_init_phy_identify(struct asd_phy *phy)
- {
- phy->identify_frame = phy->id_frm_tok->vaddr;
- memset(phy->identify_frame, 0, sizeof(*phy->identify_frame));
- phy->identify_frame->dev_type = SAS_END_DEVICE;
- if (phy->sas_phy.role & PHY_ROLE_INITIATOR)
- phy->identify_frame->initiator_bits = phy->sas_phy.iproto;
- if (phy->sas_phy.role & PHY_ROLE_TARGET)
- phy->identify_frame->target_bits = phy->sas_phy.tproto;
- memcpy(phy->identify_frame->sas_addr, phy->phy_desc->sas_addr,
- SAS_ADDR_SIZE);
- phy->identify_frame->phy_id = phy->sas_phy.id;
- }
- static int asd_init_phy(struct asd_phy *phy)
- {
- struct asd_ha_struct *asd_ha = phy->sas_phy.ha->lldd_ha;
- struct asd_sas_phy *sas_phy = &phy->sas_phy;
- sas_phy->enabled = 1;
- sas_phy->class = SAS;
- sas_phy->iproto = SAS_PROTOCOL_ALL;
- sas_phy->tproto = 0;
- sas_phy->type = PHY_TYPE_PHYSICAL;
- sas_phy->role = PHY_ROLE_INITIATOR;
- sas_phy->oob_mode = OOB_NOT_CONNECTED;
- sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
- phy->id_frm_tok = asd_alloc_coherent(asd_ha,
- sizeof(*phy->identify_frame),
- GFP_KERNEL);
- if (!phy->id_frm_tok) {
- asd_printk("no mem for IDENTIFY for phy%d\n", sas_phy->id);
- return -ENOMEM;
- } else
- asd_init_phy_identify(phy);
- memset(phy->frame_rcvd, 0, sizeof(phy->frame_rcvd));
- return 0;
- }
- static void asd_init_ports(struct asd_ha_struct *asd_ha)
- {
- int i;
- spin_lock_init(&asd_ha->asd_ports_lock);
- for (i = 0; i < ASD_MAX_PHYS; i++) {
- struct asd_port *asd_port = &asd_ha->asd_ports[i];
- memset(asd_port->sas_addr, 0, SAS_ADDR_SIZE);
- memset(asd_port->attached_sas_addr, 0, SAS_ADDR_SIZE);
- asd_port->phy_mask = 0;
- asd_port->num_phys = 0;
- }
- }
- static int asd_init_phys(struct asd_ha_struct *asd_ha)
- {
- u8 i;
- u8 phy_mask = asd_ha->hw_prof.enabled_phys;
- for (i = 0; i < ASD_MAX_PHYS; i++) {
- struct asd_phy *phy = &asd_ha->phys[i];
- phy->phy_desc = &asd_ha->hw_prof.phy_desc[i];
- phy->asd_port = NULL;
- phy->sas_phy.enabled = 0;
- phy->sas_phy.id = i;
- phy->sas_phy.sas_addr = &phy->phy_desc->sas_addr[0];
- phy->sas_phy.frame_rcvd = &phy->frame_rcvd[0];
- phy->sas_phy.ha = &asd_ha->sas_ha;
- phy->sas_phy.lldd_phy = phy;
- }
- /* Now enable and initialize only the enabled phys. */
- for_each_phy(phy_mask, phy_mask, i) {
- int err = asd_init_phy(&asd_ha->phys[i]);
- if (err)
- return err;
- }
- return 0;
- }
- /* ---------- Sliding windows ---------- */
- static int asd_init_sw(struct asd_ha_struct *asd_ha)
- {
- struct pci_dev *pcidev = asd_ha->pcidev;
- int err;
- u32 v;
- /* Unlock MBARs */
- err = pci_read_config_dword(pcidev, PCI_CONF_MBAR_KEY, &v);
- if (err) {
- asd_printk("couldn't access conf. space of %s\n",
- pci_name(pcidev));
- goto Err;
- }
- if (v)
- err = pci_write_config_dword(pcidev, PCI_CONF_MBAR_KEY, v);
- if (err) {
- asd_printk("couldn't write to MBAR_KEY of %s\n",
- pci_name(pcidev));
- goto Err;
- }
- /* Set sliding windows A, B and C to point to proper internal
- * memory regions.
- */
- pci_write_config_dword(pcidev, PCI_CONF_MBAR0_SWA, REG_BASE_ADDR);
- pci_write_config_dword(pcidev, PCI_CONF_MBAR0_SWB,
- REG_BASE_ADDR_CSEQCIO);
- pci_write_config_dword(pcidev, PCI_CONF_MBAR0_SWC, REG_BASE_ADDR_EXSI);
- asd_ha->io_handle[0].swa_base = REG_BASE_ADDR;
- asd_ha->io_handle[0].swb_base = REG_BASE_ADDR_CSEQCIO;
- asd_ha->io_handle[0].swc_base = REG_BASE_ADDR_EXSI;
- MBAR0_SWB_SIZE = asd_ha->io_handle[0].len - 0x80;
- if (!asd_ha->iospace) {
- /* MBAR1 will point to OCM (On Chip Memory) */
- pci_write_config_dword(pcidev, PCI_CONF_MBAR1, OCM_BASE_ADDR);
- asd_ha->io_handle[1].swa_base = OCM_BASE_ADDR;
- }
- spin_lock_init(&asd_ha->iolock);
- Err:
- return err;
- }
- /* ---------- SCB initialization ---------- */
- /**
- * asd_init_scbs - manually allocate the first SCB.
- * @asd_ha: pointer to host adapter structure
- *
- * This allocates the very first SCB which would be sent to the
- * sequencer for execution. Its bus address is written to
- * CSEQ_Q_NEW_POINTER, mode page 2, mode 8. Since the bus address of
- * the _next_ scb to be DMA-ed to the host adapter is read from the last
- * SCB DMA-ed to the host adapter, we have to always stay one step
- * ahead of the sequencer and keep one SCB already allocated.
- */
- static int asd_init_scbs(struct asd_ha_struct *asd_ha)
- {
- struct asd_seq_data *seq = &asd_ha->seq;
- int bitmap_bytes;
- /* allocate the index array and bitmap */
- asd_ha->seq.tc_index_bitmap_bits = asd_ha->hw_prof.max_scbs;
- asd_ha->seq.tc_index_array = kzalloc(asd_ha->seq.tc_index_bitmap_bits*
- sizeof(void *), GFP_KERNEL);
- if (!asd_ha->seq.tc_index_array)
- return -ENOMEM;
- bitmap_bytes = (asd_ha->seq.tc_index_bitmap_bits+7)/8;
- bitmap_bytes = BITS_TO_LONGS(bitmap_bytes*8)*sizeof(unsigned long);
- asd_ha->seq.tc_index_bitmap = kzalloc(bitmap_bytes, GFP_KERNEL);
- if (!asd_ha->seq.tc_index_bitmap)
- return -ENOMEM;
- spin_lock_init(&seq->tc_index_lock);
- seq->next_scb.size = sizeof(struct scb);
- seq->next_scb.vaddr = dma_pool_alloc(asd_ha->scb_pool, GFP_KERNEL,
- &seq->next_scb.dma_handle);
- if (!seq->next_scb.vaddr) {
- kfree(asd_ha->seq.tc_index_bitmap);
- kfree(asd_ha->seq.tc_index_array);
- asd_ha->seq.tc_index_bitmap = NULL;
- asd_ha->seq.tc_index_array = NULL;
- return -ENOMEM;
- }
- seq->pending = 0;
- spin_lock_init(&seq->pend_q_lock);
- INIT_LIST_HEAD(&seq->pend_q);
- return 0;
- }
- static void asd_get_max_scb_ddb(struct asd_ha_struct *asd_ha)
- {
- asd_ha->hw_prof.max_scbs = asd_get_cmdctx_size(asd_ha)/ASD_SCB_SIZE;
- asd_ha->hw_prof.max_ddbs = asd_get_devctx_size(asd_ha)/ASD_DDB_SIZE;
- ASD_DPRINTK("max_scbs:%d, max_ddbs:%d\n",
- asd_ha->hw_prof.max_scbs,
- asd_ha->hw_prof.max_ddbs);
- }
- /* ---------- Done List initialization ---------- */
- static void asd_dl_tasklet_handler(unsigned long);
- static int asd_init_dl(struct asd_ha_struct *asd_ha)
- {
- asd_ha->seq.actual_dl
- = asd_alloc_coherent(asd_ha,
- ASD_DL_SIZE * sizeof(struct done_list_struct),
- GFP_KERNEL);
- if (!asd_ha->seq.actual_dl)
- return -ENOMEM;
- asd_ha->seq.dl = asd_ha->seq.actual_dl->vaddr;
- asd_ha->seq.dl_toggle = ASD_DEF_DL_TOGGLE;
- asd_ha->seq.dl_next = 0;
- tasklet_init(&asd_ha->seq.dl_tasklet, asd_dl_tasklet_handler,
- (unsigned long) asd_ha);
- return 0;
- }
- /* ---------- EDB and ESCB init ---------- */
- static int asd_alloc_edbs(struct asd_ha_struct *asd_ha, gfp_t gfp_flags)
- {
- struct asd_seq_data *seq = &asd_ha->seq;
- int i;
- seq->edb_arr = kmalloc(seq->num_edbs*sizeof(*seq->edb_arr), gfp_flags);
- if (!seq->edb_arr)
- return -ENOMEM;
- for (i = 0; i < seq->num_edbs; i++) {
- seq->edb_arr[i] = asd_alloc_coherent(asd_ha, ASD_EDB_SIZE,
- gfp_flags);
- if (!seq->edb_arr[i])
- goto Err_unroll;
- memset(seq->edb_arr[i]->vaddr, 0, ASD_EDB_SIZE);
- }
- ASD_DPRINTK("num_edbs:%d\n", seq->num_edbs);
- return 0;
- Err_unroll:
- for (i-- ; i >= 0; i--)
- asd_free_coherent(asd_ha, seq->edb_arr[i]);
- kfree(seq->edb_arr);
- seq->edb_arr = NULL;
- return -ENOMEM;
- }
- static int asd_alloc_escbs(struct asd_ha_struct *asd_ha,
- gfp_t gfp_flags)
- {
- struct asd_seq_data *seq = &asd_ha->seq;
- struct asd_ascb *escb;
- int i, escbs;
- seq->escb_arr = kmalloc(seq->num_escbs*sizeof(*seq->escb_arr),
- gfp_flags);
- if (!seq->escb_arr)
- return -ENOMEM;
- escbs = seq->num_escbs;
- escb = asd_ascb_alloc_list(asd_ha, &escbs, gfp_flags);
- if (!escb) {
- asd_printk("couldn't allocate list of escbs\n");
- goto Err;
- }
- seq->num_escbs -= escbs; /* subtract what was not allocated */
- ASD_DPRINTK("num_escbs:%d\n", seq->num_escbs);
- for (i = 0; i < seq->num_escbs; i++, escb = list_entry(escb->list.next,
- struct asd_ascb,
- list)) {
- seq->escb_arr[i] = escb;
- escb->scb->header.opcode = EMPTY_SCB;
- }
- return 0;
- Err:
- kfree(seq->escb_arr);
- seq->escb_arr = NULL;
- return -ENOMEM;
- }
- static void asd_assign_edbs2escbs(struct asd_ha_struct *asd_ha)
- {
- struct asd_seq_data *seq = &asd_ha->seq;
- int i, k, z = 0;
- for (i = 0; i < seq->num_escbs; i++) {
- struct asd_ascb *ascb = seq->escb_arr[i];
- struct empty_scb *escb = &ascb->scb->escb;
- ascb->edb_index = z;
- escb->num_valid = ASD_EDBS_PER_SCB;
- for (k = 0; k < ASD_EDBS_PER_SCB; k++) {
- struct sg_el *eb = &escb->eb[k];
- struct asd_dma_tok *edb = seq->edb_arr[z++];
- memset(eb, 0, sizeof(*eb));
- eb->bus_addr = cpu_to_le64(((u64) edb->dma_handle));
- eb->size = cpu_to_le32(((u32) edb->size));
- }
- }
- }
- /**
- * asd_init_escbs -- allocate and initialize empty scbs
- * @asd_ha: pointer to host adapter structure
- *
- * An empty SCB has sg_elements of ASD_EDBS_PER_SCB (7) buffers.
- * They transport sense data, etc.
- */
- static int asd_init_escbs(struct asd_ha_struct *asd_ha)
- {
- struct asd_seq_data *seq = &asd_ha->seq;
- int err = 0;
- /* Allocate two empty data buffers (edb) per sequencer. */
- int edbs = 2*(1+asd_ha->hw_prof.num_phys);
- seq->num_escbs = (edbs+ASD_EDBS_PER_SCB-1)/ASD_EDBS_PER_SCB;
- seq->num_edbs = seq->num_escbs * ASD_EDBS_PER_SCB;
- err = asd_alloc_edbs(asd_ha, GFP_KERNEL);
- if (err) {
- asd_printk("couldn't allocate edbs\n");
- return err;
- }
- err = asd_alloc_escbs(asd_ha, GFP_KERNEL);
- if (err) {
- asd_printk("couldn't allocate escbs\n");
- return err;
- }
- asd_assign_edbs2escbs(asd_ha);
- /* In order to insure that normal SCBs do not overfill sequencer
- * memory and leave no space for escbs (halting condition),
- * we increment pending here by the number of escbs. However,
- * escbs are never pending.
- */
- seq->pending = seq->num_escbs;
- seq->can_queue = 1 + (asd_ha->hw_prof.max_scbs - seq->pending)/2;
- return 0;
- }
- /* ---------- HW initialization ---------- */
- /**
- * asd_chip_hardrst -- hard reset the chip
- * @asd_ha: pointer to host adapter structure
- *
- * This takes 16 cycles and is synchronous to CFCLK, which runs
- * at 200 MHz, so this should take at most 80 nanoseconds.
- */
- int asd_chip_hardrst(struct asd_ha_struct *asd_ha)
- {
- int i;
- int count = 100;
- u32 reg;
- for (i = 0 ; i < 4 ; i++) {
- asd_write_reg_dword(asd_ha, COMBIST, HARDRST);
- }
- do {
- udelay(1);
- reg = asd_read_reg_dword(asd_ha, CHIMINT);
- if (reg & HARDRSTDET) {
- asd_write_reg_dword(asd_ha, CHIMINT,
- HARDRSTDET|PORRSTDET);
- return 0;
- }
- } while (--count > 0);
- return -ENODEV;
- }
- /**
- * asd_init_chip -- initialize the chip
- * @asd_ha: pointer to host adapter structure
- *
- * Hard resets the chip, disables HA interrupts, downloads the sequnecer
- * microcode and starts the sequencers. The caller has to explicitly
- * enable HA interrupts with asd_enable_ints(asd_ha).
- */
- static int asd_init_chip(struct asd_ha_struct *asd_ha)
- {
- int err;
- err = asd_chip_hardrst(asd_ha);
- if (err) {
- asd_printk("couldn't hard reset %s\n",
- pci_name(asd_ha->pcidev));
- goto out;
- }
- asd_disable_ints(asd_ha);
- err = asd_init_seqs(asd_ha);
- if (err) {
- asd_printk("couldn't init seqs for %s\n",
- pci_name(asd_ha->pcidev));
- goto out;
- }
- err = asd_start_seqs(asd_ha);
- if (err) {
- asd_printk("coudln't start seqs for %s\n",
- pci_name(asd_ha->pcidev));
- goto out;
- }
- out:
- return err;
- }
- #define MAX_DEVS ((OCM_MAX_SIZE) / (ASD_DDB_SIZE))
- static int max_devs = 0;
- module_param_named(max_devs, max_devs, int, S_IRUGO);
- MODULE_PARM_DESC(max_devs, "\n"
- "\tMaximum number of SAS devices to support (not LUs).\n"
- "\tDefault: 2176, Maximum: 65663.\n");
- static int max_cmnds = 0;
- module_param_named(max_cmnds, max_cmnds, int, S_IRUGO);
- MODULE_PARM_DESC(max_cmnds, "\n"
- "\tMaximum number of commands queuable.\n"
- "\tDefault: 512, Maximum: 66047.\n");
- static void asd_extend_devctx_ocm(struct asd_ha_struct *asd_ha)
- {
- unsigned long dma_addr = OCM_BASE_ADDR;
- u32 d;
- dma_addr -= asd_ha->hw_prof.max_ddbs * ASD_DDB_SIZE;
- asd_write_reg_addr(asd_ha, DEVCTXBASE, (dma_addr_t) dma_addr);
- d = asd_read_reg_dword(asd_ha, CTXDOMAIN);
- d |= 4;
- asd_write_reg_dword(asd_ha, CTXDOMAIN, d);
- asd_ha->hw_prof.max_ddbs += MAX_DEVS;
- }
- static int asd_extend_devctx(struct asd_ha_struct *asd_ha)
- {
- dma_addr_t dma_handle;
- unsigned long dma_addr;
- u32 d;
- int size;
- asd_extend_devctx_ocm(asd_ha);
- asd_ha->hw_prof.ddb_ext = NULL;
- if (max_devs <= asd_ha->hw_prof.max_ddbs || max_devs > 0xFFFF) {
- max_devs = asd_ha->hw_prof.max_ddbs;
- return 0;
- }
- size = (max_devs - asd_ha->hw_prof.max_ddbs + 1) * ASD_DDB_SIZE;
- asd_ha->hw_prof.ddb_ext = asd_alloc_coherent(asd_ha, size, GFP_KERNEL);
- if (!asd_ha->hw_prof.ddb_ext) {
- asd_printk("couldn't allocate memory for %d devices\n",
- max_devs);
- max_devs = asd_ha->hw_prof.max_ddbs;
- return -ENOMEM;
- }
- dma_handle = asd_ha->hw_prof.ddb_ext->dma_handle;
- dma_addr = ALIGN((unsigned long) dma_handle, ASD_DDB_SIZE);
- dma_addr -= asd_ha->hw_prof.max_ddbs * ASD_DDB_SIZE;
- dma_handle = (dma_addr_t) dma_addr;
- asd_write_reg_addr(asd_ha, DEVCTXBASE, dma_handle);
- d = asd_read_reg_dword(asd_ha, CTXDOMAIN);
- d &= ~4;
- asd_write_reg_dword(asd_ha, CTXDOMAIN, d);
- asd_ha->hw_prof.max_ddbs = max_devs;
- return 0;
- }
- static int asd_extend_cmdctx(struct asd_ha_struct *asd_ha)
- {
- dma_addr_t dma_handle;
- unsigned long dma_addr;
- u32 d;
- int size;
- asd_ha->hw_prof.scb_ext = NULL;
- if (max_cmnds <= asd_ha->hw_prof.max_scbs || max_cmnds > 0xFFFF) {
- max_cmnds = asd_ha->hw_prof.max_scbs;
- return 0;
- }
- size = (max_cmnds - asd_ha->hw_prof.max_scbs + 1) * ASD_SCB_SIZE;
- asd_ha->hw_prof.scb_ext = asd_alloc_coherent(asd_ha, size, GFP_KERNEL);
- if (!asd_ha->hw_prof.scb_ext) {
- asd_printk("couldn't allocate memory for %d commands\n",
- max_cmnds);
- max_cmnds = asd_ha->hw_prof.max_scbs;
- return -ENOMEM;
- }
- dma_handle = asd_ha->hw_prof.scb_ext->dma_handle;
- dma_addr = ALIGN((unsigned long) dma_handle, ASD_SCB_SIZE);
- dma_addr -= asd_ha->hw_prof.max_scbs * ASD_SCB_SIZE;
- dma_handle = (dma_addr_t) dma_addr;
- asd_write_reg_addr(asd_ha, CMDCTXBASE, dma_handle);
- d = asd_read_reg_dword(asd_ha, CTXDOMAIN);
- d &= ~1;
- asd_write_reg_dword(asd_ha, CTXDOMAIN, d);
- asd_ha->hw_prof.max_scbs = max_cmnds;
- return 0;
- }
- /**
- * asd_init_ctxmem -- initialize context memory
- * asd_ha: pointer to host adapter structure
- *
- * This function sets the maximum number of SCBs and
- * DDBs which can be used by the sequencer. This is normally
- * 512 and 128 respectively. If support for more SCBs or more DDBs
- * is required then CMDCTXBASE, DEVCTXBASE and CTXDOMAIN are
- * initialized here to extend context memory to point to host memory,
- * thus allowing unlimited support for SCBs and DDBs -- only limited
- * by host memory.
- */
- static int asd_init_ctxmem(struct asd_ha_struct *asd_ha)
- {
- int bitmap_bytes;
- asd_get_max_scb_ddb(asd_ha);
- asd_extend_devctx(asd_ha);
- asd_extend_cmdctx(asd_ha);
- /* The kernel wants bitmaps to be unsigned long sized. */
- bitmap_bytes = (asd_ha->hw_prof.max_ddbs+7)/8;
- bitmap_bytes = BITS_TO_LONGS(bitmap_bytes*8)*sizeof(unsigned long);
- asd_ha->hw_prof.ddb_bitmap = kzalloc(bitmap_bytes, GFP_KERNEL);
- if (!asd_ha->hw_prof.ddb_bitmap)
- return -ENOMEM;
- spin_lock_init(&asd_ha->hw_prof.ddb_lock);
- return 0;
- }
- int asd_init_hw(struct asd_ha_struct *asd_ha)
- {
- int err;
- u32 v;
- err = asd_init_sw(asd_ha);
- if (err)
- return err;
- err = pci_read_config_dword(asd_ha->pcidev, PCIC_HSTPCIX_CNTRL, &v);
- if (err) {
- asd_printk("couldn't read PCIC_HSTPCIX_CNTRL of %s\n",
- pci_name(asd_ha->pcidev));
- return err;
- }
- pci_write_config_dword(asd_ha->pcidev, PCIC_HSTPCIX_CNTRL,
- v | SC_TMR_DIS);
- if (err) {
- asd_printk("couldn't disable split completion timer of %s\n",
- pci_name(asd_ha->pcidev));
- return err;
- }
- err = asd_read_ocm(asd_ha);
- if (err) {
- asd_printk("couldn't read ocm(%d)\n", err);
- /* While suspicios, it is not an error that we
- * couldn't read the OCM. */
- }
- err = asd_read_flash(asd_ha);
- if (err) {
- asd_printk("couldn't read flash(%d)\n", err);
- /* While suspicios, it is not an error that we
- * couldn't read FLASH memory.
- */
- }
- asd_init_ctxmem(asd_ha);
- if (asd_get_user_sas_addr(asd_ha)) {
- asd_printk("No SAS Address provided for %s\n",
- pci_name(asd_ha->pcidev));
- err = -ENODEV;
- goto Out;
- }
- asd_propagate_sas_addr(asd_ha);
- err = asd_init_phys(asd_ha);
- if (err) {
- asd_printk("couldn't initialize phys for %s\n",
- pci_name(asd_ha->pcidev));
- goto Out;
- }
- asd_init_ports(asd_ha);
- err = asd_init_scbs(asd_ha);
- if (err) {
- asd_printk("couldn't initialize scbs for %s\n",
- pci_name(asd_ha->pcidev));
- goto Out;
- }
- err = asd_init_dl(asd_ha);
- if (err) {
- asd_printk("couldn't initialize the done list:%d\n",
- err);
- goto Out;
- }
- err = asd_init_escbs(asd_ha);
- if (err) {
- asd_printk("couldn't initialize escbs\n");
- goto Out;
- }
- err = asd_init_chip(asd_ha);
- if (err) {
- asd_printk("couldn't init the chip\n");
- goto Out;
- }
- Out:
- return err;
- }
- /* ---------- Chip reset ---------- */
- /**
- * asd_chip_reset -- reset the host adapter, etc
- * @asd_ha: pointer to host adapter structure of interest
- *
- * Called from the ISR. Hard reset the chip. Let everything
- * timeout. This should be no different than hot-unplugging the
- * host adapter. Once everything times out we'll init the chip with
- * a call to asd_init_chip() and enable interrupts with asd_enable_ints().
- * XXX finish.
- */
- static void asd_chip_reset(struct asd_ha_struct *asd_ha)
- {
- struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
- ASD_DPRINTK("chip reset for %s\n", pci_name(asd_ha->pcidev));
- asd_chip_hardrst(asd_ha);
- sas_ha->notify_ha_event(sas_ha, HAE_RESET);
- }
- /* ---------- Done List Routines ---------- */
- static void asd_dl_tasklet_handler(unsigned long data)
- {
- struct asd_ha_struct *asd_ha = (struct asd_ha_struct *) data;
- struct asd_seq_data *seq = &asd_ha->seq;
- unsigned long flags;
- while (1) {
- struct done_list_struct *dl = &seq->dl[seq->dl_next];
- struct asd_ascb *ascb;
- if ((dl->toggle & DL_TOGGLE_MASK) != seq->dl_toggle)
- break;
- /* find the aSCB */
- spin_lock_irqsave(&seq->tc_index_lock, flags);
- ascb = asd_tc_index_find(seq, (int)le16_to_cpu(dl->index));
- spin_unlock_irqrestore(&seq->tc_index_lock, flags);
- if (unlikely(!ascb)) {
- ASD_DPRINTK("BUG:sequencer:dl:no ascb?!\n");
- goto next_1;
- } else if (ascb->scb->header.opcode == EMPTY_SCB) {
- goto out;
- } else if (!ascb->uldd_timer && !del_timer(&ascb->timer)) {
- goto next_1;
- }
- spin_lock_irqsave(&seq->pend_q_lock, flags);
- list_del_init(&ascb->list);
- seq->pending--;
- spin_unlock_irqrestore(&seq->pend_q_lock, flags);
- out:
- ascb->tasklet_complete(ascb, dl);
- next_1:
- seq->dl_next = (seq->dl_next + 1) & (ASD_DL_SIZE-1);
- if (!seq->dl_next)
- seq->dl_toggle ^= DL_TOGGLE_MASK;
- }
- }
- /* ---------- Interrupt Service Routines ---------- */
- /**
- * asd_process_donelist_isr -- schedule processing of done list entries
- * @asd_ha: pointer to host adapter structure
- */
- static void asd_process_donelist_isr(struct asd_ha_struct *asd_ha)
- {
- tasklet_schedule(&asd_ha->seq.dl_tasklet);
- }
- /**
- * asd_com_sas_isr -- process device communication interrupt (COMINT)
- * @asd_ha: pointer to host adapter structure
- */
- static void asd_com_sas_isr(struct asd_ha_struct *asd_ha)
- {
- u32 comstat = asd_read_reg_dword(asd_ha, COMSTAT);
- /* clear COMSTAT int */
- asd_write_reg_dword(asd_ha, COMSTAT, 0xFFFFFFFF);
- if (comstat & CSBUFPERR) {
- asd_printk("%s: command/status buffer dma parity error\n",
- pci_name(asd_ha->pcidev));
- } else if (comstat & CSERR) {
- int i;
- u32 dmaerr = asd_read_reg_dword(asd_ha, DMAERR);
- dmaerr &= 0xFF;
- asd_printk("%s: command/status dma error, DMAERR: 0x%02x, "
- "CSDMAADR: 0x%04x, CSDMAADR+4: 0x%04x\n",
- pci_name(asd_ha->pcidev),
- dmaerr,
- asd_read_reg_dword(asd_ha, CSDMAADR),
- asd_read_reg_dword(asd_ha, CSDMAADR+4));
- asd_printk("CSBUFFER:\n");
- for (i = 0; i < 8; i++) {
- asd_printk("%08x %08x %08x %08x\n",
- asd_read_reg_dword(asd_ha, CSBUFFER),
- asd_read_reg_dword(asd_ha, CSBUFFER+4),
- asd_read_reg_dword(asd_ha, CSBUFFER+8),
- asd_read_reg_dword(asd_ha, CSBUFFER+12));
- }
- asd_dump_seq_state(asd_ha, 0);
- } else if (comstat & OVLYERR) {
- u32 dmaerr = asd_read_reg_dword(asd_ha, DMAERR);
- dmaerr = (dmaerr >> 8) & 0xFF;
- asd_printk("%s: overlay dma error:0x%x\n",
- pci_name(asd_ha->pcidev),
- dmaerr);
- }
- asd_chip_reset(asd_ha);
- }
- static void asd_arp2_err(struct asd_ha_struct *asd_ha, u32 dchstatus)
- {
- static const char *halt_code[256] = {
- "UNEXPECTED_INTERRUPT0",
- "UNEXPECTED_INTERRUPT1",
- "UNEXPECTED_INTERRUPT2",
- "UNEXPECTED_INTERRUPT3",
- "UNEXPECTED_INTERRUPT4",
- "UNEXPECTED_INTERRUPT5",
- "UNEXPECTED_INTERRUPT6",
- "UNEXPECTED_INTERRUPT7",
- "UNEXPECTED_INTERRUPT8",
- "UNEXPECTED_INTERRUPT9",
- "UNEXPECTED_INTERRUPT10",
- [11 ... 19] = "unknown[11,19]",
- "NO_FREE_SCB_AVAILABLE",
- "INVALID_SCB_OPCODE",
- "INVALID_MBX_OPCODE",
- "INVALID_ATA_STATE",
- "ATA_QUEUE_FULL",
- "ATA_TAG_TABLE_FAULT",
- "ATA_TAG_MASK_FAULT",
- "BAD_LINK_QUEUE_STATE",
- "DMA2CHIM_QUEUE_ERROR",
- "EMPTY_SCB_LIST_FULL",
- "unknown[30]",
- "IN_USE_SCB_ON_FREE_LIST",
- "BAD_OPEN_WAIT_STATE",
- "INVALID_STP_AFFILIATION",
- "unknown[34]",
- "EXEC_QUEUE_ERROR",
- "TOO_MANY_EMPTIES_NEEDED",
- "EMPTY_REQ_QUEUE_ERROR",
- "Q_MONIRTT_MGMT_ERROR",
- "TARGET_MODE_FLOW_ERROR",
- "DEVICE_QUEUE_NOT_FOUND",
- "START_IRTT_TIMER_ERROR",
- "ABORT_TASK_ILLEGAL_REQ",
- [43 ... 255] = "unknown[43,255]"
- };
- if (dchstatus & CSEQINT) {
- u32 arp2int = asd_read_reg_dword(asd_ha, CARP2INT);
- if (arp2int & (ARP2WAITTO|ARP2ILLOPC|ARP2PERR|ARP2CIOPERR)) {
- asd_printk("%s: CSEQ arp2int:0x%x\n",
- pci_name(asd_ha->pcidev),
- arp2int);
- } else if (arp2int & ARP2HALTC)
- asd_printk("%s: CSEQ halted: %s\n",
- pci_name(asd_ha->pcidev),
- halt_code[(arp2int>>16)&0xFF]);
- else
- asd_printk("%s: CARP2INT:0x%x\n",
- pci_name(asd_ha->pcidev),
- arp2int);
- }
- if (dchstatus & LSEQINT_MASK) {
- int lseq;
- u8 lseq_mask = dchstatus & LSEQINT_MASK;
- for_each_sequencer(lseq_mask, lseq_mask, lseq) {
- u32 arp2int = asd_read_reg_dword(asd_ha,
- LmARP2INT(lseq));
- if (arp2int & (ARP2WAITTO | ARP2ILLOPC | ARP2PERR
- | ARP2CIOPERR)) {
- asd_printk("%s: LSEQ%d arp2int:0x%x\n",
- pci_name(asd_ha->pcidev),
- lseq, arp2int);
- /* XXX we should only do lseq reset */
- } else if (arp2int & ARP2HALTC)
- asd_printk("%s: LSEQ%d halted: %s\n",
- pci_name(asd_ha->pcidev),
- lseq,halt_code[(arp2int>>16)&0xFF]);
- else
- asd_printk("%s: LSEQ%d ARP2INT:0x%x\n",
- pci_name(asd_ha->pcidev), lseq,
- arp2int);
- }
- }
- asd_chip_reset(asd_ha);
- }
- /**
- * asd_dch_sas_isr -- process device channel interrupt (DEVINT)
- * @asd_ha: pointer to host adapter structure
- */
- static void asd_dch_sas_isr(struct asd_ha_struct *asd_ha)
- {
- u32 dchstatus = asd_read_reg_dword(asd_ha, DCHSTATUS);
- if (dchstatus & CFIFTOERR) {
- asd_printk("%s: CFIFTOERR\n", pci_name(asd_ha->pcidev));
- asd_chip_reset(asd_ha);
- } else
- asd_arp2_err(asd_ha, dchstatus);
- }
- /**
- * ads_rbi_exsi_isr -- process external system interface interrupt (INITERR)
- * @asd_ha: pointer to host adapter structure
- */
- static void asd_rbi_exsi_isr(struct asd_ha_struct *asd_ha)
- {
- u32 stat0r = asd_read_reg_dword(asd_ha, ASISTAT0R);
- if (!(stat0r & ASIERR)) {
- asd_printk("hmm, EXSI interrupted but no error?\n");
- return;
- }
- if (stat0r & ASIFMTERR) {
- asd_printk("ASI SEEPROM format error for %s\n",
- pci_name(asd_ha->pcidev));
- } else if (stat0r & ASISEECHKERR) {
- u32 stat1r = asd_read_reg_dword(asd_ha, ASISTAT1R);
- asd_printk("ASI SEEPROM checksum 0x%x error for %s\n",
- stat1r & CHECKSUM_MASK,
- pci_name(asd_ha->pcidev));
- } else {
- u32 statr = asd_read_reg_dword(asd_ha, ASIERRSTATR);
- if (!(statr & CPI2ASIMSTERR_MASK)) {
- ASD_DPRINTK("hmm, ASIERR?\n");
- return;
- } else {
- u32 addr = asd_read_reg_dword(asd_ha, ASIERRADDR);
- u32 data = asd_read_reg_dword(asd_ha, ASIERRDATAR);
- asd_printk("%s: CPI2 xfer err: addr: 0x%x, wdata: 0x%x, "
- "count: 0x%x, byteen: 0x%x, targerr: 0x%x "
- "master id: 0x%x, master err: 0x%x\n",
- pci_name(asd_ha->pcidev),
- addr, data,
- (statr & CPI2ASIBYTECNT_MASK) >> 16,
- (statr & CPI2ASIBYTEEN_MASK) >> 12,
- (statr & CPI2ASITARGERR_MASK) >> 8,
- (statr & CPI2ASITARGMID_MASK) >> 4,
- (statr & CPI2ASIMSTERR_MASK));
- }
- }
- asd_chip_reset(asd_ha);
- }
- /**
- * asd_hst_pcix_isr -- process host interface interrupts
- * @asd_ha: pointer to host adapter structure
- *
- * Asserted on PCIX errors: target abort, etc.
- */
- static void asd_hst_pcix_isr(struct asd_ha_struct *asd_ha)
- {
- u16 status;
- u32 pcix_status;
- u32 ecc_status;
- pci_read_config_word(asd_ha->pcidev, PCI_STATUS, &status);
- pci_read_config_dword(asd_ha->pcidev, PCIX_STATUS, &pcix_status);
- pci_read_config_dword(asd_ha->pcidev, ECC_CTRL_STAT, &ecc_status);
- if (status & PCI_STATUS_DETECTED_PARITY)
- asd_printk("parity error for %s\n", pci_name(asd_ha->pcidev));
- else if (status & PCI_STATUS_REC_MASTER_ABORT)
- asd_printk("master abort for %s\n", pci_name(asd_ha->pcidev));
- else if (status & PCI_STATUS_REC_TARGET_ABORT)
- asd_printk("target abort for %s\n", pci_name(asd_ha->pcidev));
- else if (status & PCI_STATUS_PARITY)
- asd_printk("data parity for %s\n", pci_name(asd_ha->pcidev));
- else if (pcix_status & RCV_SCE) {
- asd_printk("received split completion error for %s\n",
- pci_name(asd_ha->pcidev));
- pci_write_config_dword(asd_ha->pcidev,PCIX_STATUS,pcix_status);
- /* XXX: Abort task? */
- return;
- } else if (pcix_status & UNEXP_SC) {
- asd_printk("unexpected split completion for %s\n",
- pci_name(asd_ha->pcidev));
- pci_write_config_dword(asd_ha->pcidev,PCIX_STATUS,pcix_status);
- /* ignore */
- return;
- } else if (pcix_status & SC_DISCARD)
- asd_printk("split completion discarded for %s\n",
- pci_name(asd_ha->pcidev));
- else if (ecc_status & UNCOR_ECCERR)
- asd_printk("uncorrectable ECC error for %s\n",
- pci_name(asd_ha->pcidev));
- asd_chip_reset(asd_ha);
- }
- /**
- * asd_hw_isr -- host adapter interrupt service routine
- * @irq: ignored
- * @dev_id: pointer to host adapter structure
- *
- * The ISR processes done list entries and level 3 error handling.
- */
- irqreturn_t asd_hw_isr(int irq, void *dev_id)
- {
- struct asd_ha_struct *asd_ha = dev_id;
- u32 chimint = asd_read_reg_dword(asd_ha, CHIMINT);
- if (!chimint)
- return IRQ_NONE;
- asd_write_reg_dword(asd_ha, CHIMINT, chimint);
- (void) asd_read_reg_dword(asd_ha, CHIMINT);
- if (chimint & DLAVAIL)
- asd_process_donelist_isr(asd_ha);
- if (chimint & COMINT)
- asd_com_sas_isr(asd_ha);
- if (chimint & DEVINT)
- asd_dch_sas_isr(asd_ha);
- if (chimint & INITERR)
- asd_rbi_exsi_isr(asd_ha);
- if (chimint & HOSTERR)
- asd_hst_pcix_isr(asd_ha);
- return IRQ_HANDLED;
- }
- /* ---------- SCB handling ---------- */
- static struct asd_ascb *asd_ascb_alloc(struct asd_ha_struct *asd_ha,
- gfp_t gfp_flags)
- {
- extern struct kmem_cache *asd_ascb_cache;
- struct asd_seq_data *seq = &asd_ha->seq;
- struct asd_ascb *ascb;
- unsigned long flags;
- ascb = kmem_cache_zalloc(asd_ascb_cache, gfp_flags);
- if (ascb) {
- ascb->dma_scb.size = sizeof(struct scb);
- ascb->dma_scb.vaddr = dma_pool_alloc(asd_ha->scb_pool,
- gfp_flags,
- &ascb->dma_scb.dma_handle);
- if (!ascb->dma_scb.vaddr) {
- kmem_cache_free(asd_ascb_cache, ascb);
- return NULL;
- }
- memset(ascb->dma_scb.vaddr, 0, sizeof(struct scb));
- asd_init_ascb(asd_ha, ascb);
- spin_lock_irqsave(&seq->tc_index_lock, flags);
- ascb->tc_index = asd_tc_index_get(seq, ascb);
- spin_unlock_irqrestore(&seq->tc_index_lock, flags);
- if (ascb->tc_index == -1)
- goto undo;
- ascb->scb->header.index = cpu_to_le16((u16)ascb->tc_index);
- }
- return ascb;
- undo:
- dma_pool_free(asd_ha->scb_pool, ascb->dma_scb.vaddr,
- ascb->dma_scb.dma_handle);
- kmem_cache_free(asd_ascb_cache, ascb);
- ASD_DPRINTK("no index for ascb\n");
- return NULL;
- }
- /**
- * asd_ascb_alloc_list -- allocate a list of aSCBs
- * @asd_ha: pointer to host adapter structure
- * @num: pointer to integer number of aSCBs
- * @gfp_flags: GFP_ flags.
- *
- * This is the only function which is used to allocate aSCBs.
- * It can allocate one or many. If more than one, then they form
- * a linked list in two ways: by their list field of the ascb struct
- * and by the next_scb field of the scb_header.
- *
- * Returns NULL if no memory was available, else pointer to a list
- * of ascbs. When this function returns, @num would be the number
- * of SCBs which were not able to be allocated, 0 if all requested
- * were able to be allocated.
- */
- struct asd_ascb *asd_ascb_alloc_list(struct asd_ha_struct
- *asd_ha, int *num,
- gfp_t gfp_flags)
- {
- struct asd_ascb *first = NULL;
- for ( ; *num > 0; --*num) {
- struct asd_ascb *ascb = asd_ascb_alloc(asd_ha, gfp_flags);
- if (!ascb)
- break;
- else if (!first)
- first = ascb;
- else {
- struct asd_ascb *last = list_entry(first->list.prev,
- struct asd_ascb,
- list);
- list_add_tail(&ascb->list, &first->list);
- last->scb->header.next_scb =
- cpu_to_le64(((u64)ascb->dma_scb.dma_handle));
- }
- }
- return first;
- }
- /**
- * asd_swap_head_scb -- swap the head scb
- * @asd_ha: pointer to host adapter structure
- * @ascb: pointer to the head of an ascb list
- *
- * The sequencer knows the DMA address of the next SCB to be DMAed to
- * the host adapter, from initialization or from the last list DMAed.
- * seq->next_scb keeps the address of this SCB. The sequencer will
- * DMA to the host adapter this list of SCBs. But the head (first
- * element) of this list is not known to the sequencer. Here we swap
- * the head of the list with the known SCB (memcpy()).
- * Only one memcpy() is required per list so it is in our interest
- * to keep the list of SCB as long as possible so that the ratio
- * of number of memcpy calls to the number of SCB DMA-ed is as small
- * as possible.
- *
- * LOCKING: called with the pending list lock held.
- */
- static void asd_swap_head_scb(struct asd_ha_struct *asd_ha,
- struct asd_ascb *ascb)
- {
- struct asd_seq_data *seq = &asd_ha->seq;
- struct asd_ascb *last = list_entry(ascb->list.prev,
- struct asd_ascb,
- list);
- struct asd_dma_tok t = ascb->dma_scb;
- memcpy(seq->next_scb.vaddr, ascb->scb, sizeof(*ascb->scb));
- ascb->dma_scb = seq->next_scb;
- ascb->scb = ascb->dma_scb.vaddr;
- seq->next_scb = t;
- last->scb->header.next_scb =
- cpu_to_le64(((u64)seq->next_scb.dma_handle));
- }
- /**
- * asd_start_timers -- (add and) start timers of SCBs
- * @list: pointer to struct list_head of the scbs
- * @to: timeout in jiffies
- *
- * If an SCB in the @list has no timer function, assign the default
- * one, then start the timer of the SCB. This function is
- * intended to be called from asd_post_ascb_list(), just prior to
- * posting the SCBs to the sequencer.
- */
- static void asd_start_scb_timers(struct list_head *list)
- {
- struct asd_ascb *ascb;
- list_for_each_entry(ascb, list, list) {
- if (!ascb->uldd_timer) {
- ascb->timer.data = (unsigned long) ascb;
- ascb->timer.function = asd_ascb_timedout;
- ascb->timer.expires = jiffies + AIC94XX_SCB_TIMEOUT;
- add_timer(&ascb->timer);
- }
- }
- }
- /**
- * asd_post_ascb_list -- post a list of 1 or more aSCBs to the host adapter
- * @asd_ha: pointer to a host adapter structure
- * @ascb: pointer to the first aSCB in the list
- * @num: number of aSCBs in the list (to be posted)
- *
- * See queueing comment in asd_post_escb_list().
- *
- * Additional note on queuing: In order to minimize the ratio of memcpy()
- * to the number of ascbs sent, we try to batch-send as many ascbs as possible
- * in one go.
- * Two cases are possible:
- * A) can_queue >= num,
- * B) can_queue < num.
- * Case A: we can send the whole batch at once. Increment "pending"
- * in the beginning of this function, when it is checked, in order to
- * eliminate races when this function is called by multiple processes.
- * Case B: should never happen.
- */
- int asd_post_ascb_list(struct asd_ha_struct *asd_ha, struct asd_ascb *ascb,
- int num)
- {
- unsigned long flags;
- LIST_HEAD(list);
- int can_queue;
- spin_lock_irqsave(&asd_ha->seq.pend_q_lock, flags);
- can_queue = asd_ha->hw_prof.max_scbs - asd_ha->seq.pending;
- if (can_queue >= num)
- asd_ha->seq.pending += num;
- else
- can_queue = 0;
- if (!can_queue) {
- spin_unlock_irqrestore(&asd_ha->seq.pend_q_lock, flags);
- asd_printk("%s: scb queue full\n", pci_name(asd_ha->pcidev));
- return -SAS_QUEUE_FULL;
- }
- asd_swap_head_scb(asd_ha, ascb);
- __list_add(&list, ascb->list.prev, &ascb->list);
- asd_start_scb_timers(&list);
- asd_ha->seq.scbpro += num;
- list_splice_init(&list, asd_ha->seq.pend_q.prev);
- asd_write_reg_dword(asd_ha, SCBPRO, (u32)asd_ha->seq.scbpro);
- spin_unlock_irqrestore(&asd_ha->seq.pend_q_lock, flags);
- return 0;
- }
- /**
- * asd_post_escb_list -- post a list of 1 or more empty scb
- * @asd_ha: pointer to a host adapter structure
- * @ascb: pointer to the first empty SCB in the list
- * @num: number of aSCBs in the list (to be posted)
- *
- * This is essentially the same as asd_post_ascb_list, but we do not
- * increment pending, add those to the pending list or get indexes.
- * See asd_init_escbs() and asd_init_post_escbs().
- *
- * Since sending a list of ascbs is a superset of sending a single
- * ascb, this function exists to generalize this. More specifically,
- * when sending a list of those, we want to do only a _single_
- * memcpy() at swap head, as opposed to for each ascb sent (in the
- * case of sending them one by one). That is, we want to minimize the
- * ratio of memcpy() operations to the number of ascbs sent. The same
- * logic applies to asd_post_ascb_list().
- */
- int asd_post_escb_list(struct asd_ha_struct *asd_ha, struct asd_ascb *ascb,
- int num)
- {
- unsigned long flags;
- spin_lock_irqsave(&asd_ha->seq.pend_q_lock, flags);
- asd_swap_head_scb(asd_ha, ascb);
- asd_ha->seq.scbpro += num;
- asd_write_reg_dword(asd_ha, SCBPRO, (u32)asd_ha->seq.scbpro);
- spin_unlock_irqrestore(&asd_ha->seq.pend_q_lock, flags);
- return 0;
- }
- /* ---------- LED ---------- */
- /**
- * asd_turn_led -- turn on/off an LED
- * @asd_ha: pointer to host adapter structure
- * @phy_id: the PHY id whose LED we want to manupulate
- * @op: 1 to turn on, 0 to turn off
- */
- void asd_turn_led(struct asd_ha_struct *asd_ha, int phy_id, int op)
- {
- if (phy_id < ASD_MAX_PHYS) {
- u32 v = asd_read_reg_dword(asd_ha, LmCONTROL(phy_id));
- if (op)
- v |= LEDPOL;
- else
- v &= ~LEDPOL;
- asd_write_reg_dword(asd_ha, LmCONTROL(phy_id), v);
- }
- }
- /**
- * asd_control_led -- enable/disable an LED on the board
- * @asd_ha: pointer to host adapter structure
- * @phy_id: integer, the phy id
- * @op: integer, 1 to enable, 0 to disable the LED
- *
- * First we output enable the LED, then we set the source
- * to be an external module.
- */
- void asd_control_led(struct asd_ha_struct *asd_ha, int phy_id, int op)
- {
- if (phy_id < ASD_MAX_PHYS) {
- u32 v;
- v = asd_read_reg_dword(asd_ha, GPIOOER);
- if (op)
- v |= (1 << phy_id);
- else
- v &= ~(1 << phy_id);
- asd_write_reg_dword(asd_ha, GPIOOER, v);
- v = asd_read_reg_dword(asd_ha, GPIOCNFGR);
- if (op)
- v |= (1 << phy_id);
- else
- v &= ~(1 << phy_id);
- asd_write_reg_dword(asd_ha, GPIOCNFGR, v);
- }
- }
- /* ---------- PHY enable ---------- */
- static int asd_enable_phy(struct asd_ha_struct *asd_ha, int phy_id)
- {
- struct asd_phy *phy = &asd_ha->phys[phy_id];
- asd_write_reg_byte(asd_ha, LmSEQ_OOB_REG(phy_id, INT_ENABLE_2), 0);
- asd_write_reg_byte(asd_ha, LmSEQ_OOB_REG(phy_id, HOT_PLUG_DELAY),
- HOTPLUG_DELAY_TIMEOUT);
- /* Get defaults from manuf. sector */
- /* XXX we need defaults for those in case MS is broken. */
- asd_write_reg_byte(asd_ha, LmSEQ_OOB_REG(phy_id, PHY_CONTROL_0),
- phy->phy_desc->phy_control_0);
- asd_write_reg_byte(asd_ha, LmSEQ_OOB_REG(phy_id, PHY_CONTROL_1),
- phy->phy_desc->phy_control_1);
- asd_write_reg_byte(asd_ha, LmSEQ_OOB_REG(phy_id, PHY_CONTROL_2),
- phy->phy_desc->phy_control_2);
- asd_write_reg_byte(asd_ha, LmSEQ_OOB_REG(phy_id, PHY_CONTROL_3),
- phy->phy_desc->phy_control_3);
- asd_write_reg_dword(asd_ha, LmSEQ_TEN_MS_COMINIT_TIMEOUT(phy_id),
- ASD_COMINIT_TIMEOUT);
- asd_write_reg_addr(asd_ha, LmSEQ_TX_ID_ADDR_FRAME(phy_id),
- phy->id_frm_tok->dma_handle);
- asd_control_led(asd_ha, phy_id, 1);
- return 0;
- }
- int asd_enable_phys(struct asd_ha_struct *asd_ha, const u8 phy_mask)
- {
- u8 phy_m;
- u8 i;
- int num = 0, k;
- struct asd_ascb *ascb;
- struct asd_ascb *ascb_list;
- if (!phy_mask) {
- asd_printk("%s called with phy_mask of 0!?\n", __func__);
- return 0;
- }
- for_each_phy(phy_mask, phy_m, i) {
- num++;
- asd_enable_phy(asd_ha, i);
- }
- k = num;
- ascb_list = asd_ascb_alloc_list(asd_ha, &k, GFP_KERNEL);
- if (!ascb_list) {
- asd_printk("no memory for control phy ascb list\n");
- return -ENOMEM;
- }
- num -= k;
- ascb = ascb_list;
- for_each_phy(phy_mask, phy_m, i) {
- asd_build_control_phy(ascb, i, ENABLE_PHY);
- ascb = list_entry(ascb->list.next, struct asd_ascb, list);
- }
- ASD_DPRINTK("posting %d control phy scbs\n", num);
- k = asd_post_ascb_list(asd_ha, ascb_list, num);
- if (k)
- asd_ascb_free_list(ascb_list);
- return k;
- }
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