// SPDX-License-Identifier: GPL-2.0-only
/*
* Aic94xx SAS / SATA driver hardware interface .
*
* Copyright ( C ) 2005 Adaptec , Inc . All rights reserved .
* Copyright ( C ) 2005 Luben Tuikov < luben_tuikov @ adaptec . com >
*/
#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.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->iproto = SAS_PROTOCOL_ALL;
sas_phy->tproto = 0 ;
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 - 0 x80;
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 = kcalloc(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) {
kfree(asd_ha->seq.tc_index_array);
asd_ha->seq.tc_index_array = NULL;
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_array(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_array(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("couldn'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 > 0 xFFFF) {
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 > 0 xFFFF) {
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;
}
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)
{
ASD_DPRINTK("chip reset for %s\n" , pci_name(asd_ha->pcidev));
asd_chip_hardrst(asd_ha);
}
/* ---------- 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 && !timer_delete(&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, 0 xFFFFFFFF);
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 &= 0 xFF;
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 ) & 0 xFF;
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 )&0 xFF]);
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 )&0 xFF]);
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);
}
/**
* asd_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_zalloc(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;
}
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_scb_timers - - ( add and ) start timers of SCBs
* @ list : pointer to struct list_head of the scbs
*
* 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.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;
}
Messung V0.5 in Prozent C=97 H=87 G=91
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