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[SCSI] bfa: Brocade-1860 Fabric Adapter PLL init fixes. 

- If flash controller is halted unconditionally, this results in
  illegal write access to flash controller register domain. Since
  flash controller registers are only accessible once s_clk is started
  - added logic to check for WGN status and halt flash controller only
  if it is already running.
- Added check to wait for flash controller halt to be completed before
  proceeding with s_clk/l_clk initializations.
- Removed unnecessary reset logic for PMM 1T memory and moved memory
  initialization after flash access enable.
- Disable Brocade-1860 asic MBOX interrupt before PLL initialization.
- Remove reset enable for S_CLK/L_CLK after both PLL initializations
  are complete.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Krishna Gudipati 2011-06-24 20:23:38 -07:00 committed by James Bottomley
parent a714134a85
commit 10a0737924
9 changed files with 176 additions and 139 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/scsi/bfa/bfa_core.c
View File

@ -251,7 +251,39 @@ bfa_isr_reqq(struct bfa_s *bfa, int qid)
void
bfa_msix_all(struct bfa_s *bfa, int vec)
{
bfa_intx(bfa);
u32 intr, qintr;
int queue;
intr = readl(bfa->iocfc.bfa_regs.intr_status);
if (!intr)
return;
/*
* RME completion queue interrupt
*/
qintr = intr & __HFN_INT_RME_MASK;
if (qintr && bfa->queue_process) {
for (queue = 0; queue < BFI_IOC_MAX_CQS; queue++)
bfa_isr_rspq(bfa, queue);
}
intr &= ~qintr;
if (!intr)
return;
/*
* CPE completion queue interrupt
*/
qintr = intr & __HFN_INT_CPE_MASK;
if (qintr && bfa->queue_process) {
for (queue = 0; queue < BFI_IOC_MAX_CQS; queue++)
bfa_isr_reqq(bfa, queue);
}
intr &= ~qintr;
if (!intr)
return;
bfa_msix_lpu_err(bfa, intr);
}
bfa_boolean_t
@ -469,6 +501,9 @@ bfa_iocfc_send_cfg(void *bfa_arg)
/*
* initialize IOC configuration info
*/
cfg_info->single_msix_vec = 0;
if (bfa->msix.nvecs == 1)
cfg_info->single_msix_vec = 1;
cfg_info->endian_sig = BFI_IOC_ENDIAN_SIG;
cfg_info->num_cqs = cfg->fwcfg.num_cqs;
cfg_info->num_ioim_reqs = cpu_to_be16(cfg->fwcfg.num_ioim_reqs);
@ -1080,12 +1115,6 @@ bfa_iocfc_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
ioc->trcmod = bfa->trcmod;
bfa_ioc_attach(&bfa->ioc, bfa, &bfa_iocfc_cbfn, &bfa->timer_mod);
/*
* Set FC mode for BFA_PCI_DEVICE_ID_CT_FC.
*/
if (pcidev->device_id == BFA_PCI_DEVICE_ID_CT_FC)
bfa_ioc_set_fcmode(&bfa->ioc);
bfa_ioc_pci_init(&bfa->ioc, pcidev, BFI_PCIFN_CLASS_FC);
bfa_ioc_mbox_register(&bfa->ioc, bfa_mbox_isrs);

2
drivers/scsi/bfa/bfa_hw_cb.c
View File

@ -114,7 +114,7 @@ bfa_hwcb_msix_ctrl_install(struct bfa_s *bfa)
return;
if (bfa->msix.nvecs == 1) {
for (i = BFI_MSIX_RME_QMAX_CB+1; i < BFI_MSIX_CB_MAX; i++)
for (i = BFI_MSIX_CPE_QMIN_CB; i < BFI_MSIX_CB_MAX; i++)
bfa->msix.handler[i] = bfa_msix_all;
return;
}

42
drivers/scsi/bfa/bfa_ioc.c
View File

@ -2399,12 +2399,6 @@ bfa_ioc_error_isr(struct bfa_ioc_s *ioc)
bfa_fsm_send_event(ioc, IOC_E_HWERROR);
}
void
bfa_ioc_set_fcmode(struct bfa_ioc_s *ioc)
{
ioc->fcmode = BFA_TRUE;
}
/*
* return true if IOC is disabled
*/
@ -2592,35 +2586,7 @@ bfa_ioc_get_adapter_model(struct bfa_ioc_s *ioc, char *model)
ioc_attr = ioc->attr;
/*
* model name
*/
if (ioc->asic_gen == BFI_ASIC_GEN_CT2) {
int np = bfa_ioc_get_nports(ioc);
char c;
switch (ioc_attr->card_type) {
case BFA_MFG_TYPE_PROWLER_F:
case BFA_MFG_TYPE_PROWLER_N:
case BFA_MFG_TYPE_PROWLER_C:
snprintf(model, BFA_ADAPTER_MODEL_NAME_LEN,
"%s-%u-%u",
BFA_MFG_NAME, ioc_attr->card_type, np);
break;
case BFA_MFG_TYPE_PROWLER_D:
if (ioc_attr->ic == BFA_MFG_IC_FC)
c = 'F';
else
c = 'P';
snprintf(model, BFA_ADAPTER_MODEL_NAME_LEN,
"%s-%u-%u%c",
BFA_MFG_NAME, ioc_attr->card_type, np, c);
break;
default:
break;
}
} else
snprintf(model, BFA_ADAPTER_MODEL_NAME_LEN, "%s-%u",
snprintf(model, BFA_ADAPTER_MODEL_NAME_LEN, "%s-%u",
BFA_MFG_NAME, ioc_attr->card_type);
}
@ -2711,12 +2677,6 @@ bfa_ioc_get_mfg_mac(struct bfa_ioc_s *ioc)
return m;
}
bfa_boolean_t
bfa_ioc_get_fcmode(struct bfa_ioc_s *ioc)
{
return ioc->fcmode || bfa_asic_id_cb(ioc->pcidev.device_id);
}
/*
* Retrieve saved firmware trace from a prior IOC failure.
*/

3
drivers/scsi/bfa/bfa_ioc.h
View File

@ -362,6 +362,7 @@ bfa_status_t bfa_ioc_ct2_pll_init(void __iomem *rb, enum bfi_asic_mode mode);
} while (0)
#define bfa_ioc_ownership_reset(__ioc) \
((__ioc)->ioc_hwif->ioc_ownership_reset(__ioc))
#define bfa_ioc_get_fcmode(__ioc) ((__ioc)->fcmode)
#define bfa_ioc_lpu_read_stat(__ioc) do { \
if ((__ioc)->ioc_hwif->ioc_lpu_read_stat) \
((__ioc)->ioc_hwif->ioc_lpu_read_stat(__ioc)); \
@ -414,8 +415,6 @@ bfa_status_t bfa_ioc_debug_fwtrc(struct bfa_ioc_s *ioc, void *trcdata,
int *trclen);
bfa_status_t bfa_ioc_debug_fwcore(struct bfa_ioc_s *ioc, void *buf,
u32 *offset, int *buflen);
void bfa_ioc_set_fcmode(struct bfa_ioc_s *ioc);
bfa_boolean_t bfa_ioc_get_fcmode(struct bfa_ioc_s *ioc);
bfa_boolean_t bfa_ioc_sem_get(void __iomem *sem_reg);
void bfa_ioc_fwver_get(struct bfa_ioc_s *ioc,
struct bfi_ioc_image_hdr_s *fwhdr);

194
drivers/scsi/bfa/bfa_ioc_ct.c
View File

@ -564,10 +564,12 @@ bfa_ioc_set_ct2_hwif(struct bfa_ioc_s *ioc)
* Temporary workaround for MSI-X resource allocation for catapult-2.
*/
#define HOSTFN_MSIX_DEFAULT 16
#define HOSTFN_MSIX_VT_INDEX_MBOX_ERR 0x30138
#define HOSTFN_MSIX_VT_OFST_NUMVT 0x3013c
#define __MSIX_VT_NUMVT__MK 0x003ff800
#define __MSIX_VT_NUMVT__SH 11
#define __MSIX_VT_NUMVT_(_v) ((_v) << __MSIX_VT_NUMVT__SH)
#define __MSIX_VT_OFST_ 0x000007ff
void
bfa_ioc_ct2_poweron(struct bfa_ioc_s *ioc)
{
@ -575,12 +577,17 @@ bfa_ioc_ct2_poweron(struct bfa_ioc_s *ioc)
u32 r32;
r32 = readl(rb + HOSTFN_MSIX_VT_OFST_NUMVT);
if (r32 & __MSIX_VT_NUMVT__MK)
if (r32 & __MSIX_VT_NUMVT__MK) {
writel(r32 & __MSIX_VT_OFST_,
rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
return;
}
writel(__MSIX_VT_NUMVT_(HOSTFN_MSIX_DEFAULT - 1) |
HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
rb + HOSTFN_MSIX_VT_OFST_NUMVT);
writel(HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
}
bfa_status_t
@ -649,17 +656,8 @@ bfa_ioc_ct_pll_init(void __iomem *rb, enum bfi_asic_mode mode)
return BFA_STATUS_OK;
}
static struct { u32 sclk, speed, half_speed; } ct2_pll[] = {
{0}, /* unused */
{__APP_PLL_SCLK_CLK_DIV2, 0, 0}, /* FC 8G */
{0, 0, 0}, /* FC 16G */
{__APP_PLL_SCLK_REFCLK_SEL | __APP_PLL_SCLK_CLK_DIV2, 0, /* ETH */
__APP_LPUCLK_HALFSPEED},
{0, 0, 0}, /* COMBO */
};
static void
bfa_ioc_ct2_sclk_init(void __iomem *rb, enum bfi_asic_mode mode)
bfa_ioc_ct2_sclk_init(void __iomem *rb)
{
u32 r32;
@ -673,11 +671,12 @@ bfa_ioc_ct2_sclk_init(void __iomem *rb, enum bfi_asic_mode mode)
writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
/*
* select clock speed based on mode
* Ignore mode and program for the max clock (which is FC16)
* Firmware/NFC will do the PLL init appropiately
*/
r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
r32 &= ~(__APP_PLL_SCLK_REFCLK_SEL | __APP_PLL_SCLK_CLK_DIV2);
writel(r32 | ct2_pll[mode].sclk, (rb + CT2_APP_PLL_SCLK_CTL_REG));
writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
/*
* while doing PLL init dont clock gate ethernet subsystem
@ -700,30 +699,10 @@ bfa_ioc_ct2_sclk_init(void __iomem *rb, enum bfi_asic_mode mode)
* poll for s_clk lock or delay 1ms
*/
udelay(1000);
/*
* release soft reset on s_clk & l_clk
*/
r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
writel(r32 & ~__APP_PLL_SCLK_LOGIC_SOFT_RESET,
(rb + CT2_APP_PLL_SCLK_CTL_REG));
/*
* clock gating for ethernet subsystem if not in ethernet mode
*/
if (mode != BFI_ASIC_MODE_ETH) {
r32 = readl((rb + CT2_CHIP_MISC_PRG));
writel(r32 & ~__ETH_CLK_ENABLE_PORT0,
(rb + CT2_CHIP_MISC_PRG));
r32 = readl((rb + CT2_PCIE_MISC_REG));
writel(r32 & ~__ETH_CLK_ENABLE_PORT1,
(rb + CT2_PCIE_MISC_REG));
}
}
static void
bfa_ioc_ct2_lclk_init(void __iomem *rb, enum bfi_asic_mode mode)
bfa_ioc_ct2_lclk_init(void __iomem *rb)
{
u32 r32;
@ -737,35 +716,60 @@ bfa_ioc_ct2_lclk_init(void __iomem *rb, enum bfi_asic_mode mode)
writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
/*
* set LPU speed
* set LPU speed (set for FC16 which will work for other modes)
*/
r32 = readl((rb + CT2_CHIP_MISC_PRG));
writel(r32 | ct2_pll[mode].speed,
(rb + CT2_CHIP_MISC_PRG));
writel(r32, (rb + CT2_CHIP_MISC_PRG));
/*
* set LPU half speed
* set LPU half speed (set for FC16 which will work for other modes)
*/
r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
writel(r32 | ct2_pll[mode].half_speed,
(rb + CT2_APP_PLL_LCLK_CTL_REG));
writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
/*
* set lclk for mode
* set lclk for mode (set for FC16)
*/
r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
r32 &= (__P_LCLK_PLL_LOCK | __APP_LPUCLK_HALFSPEED);
if (mode == BFI_ASIC_MODE_FC || mode == BFI_ASIC_MODE_FC16 ||
mode == BFI_ASIC_MODE_ETH)
r32 |= 0x20c1731b;
else
r32 |= 0x2081731b;
r32 |= 0x20c1731b;
writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
/*
* poll for s_clk lock or delay 1ms
*/
udelay(1000);
}
static void
bfa_ioc_ct2_mem_init(void __iomem *rb)
{
u32 r32;
r32 = readl((rb + PSS_CTL_REG));
r32 &= ~__PSS_LMEM_RESET;
writel(r32, (rb + PSS_CTL_REG));
udelay(1000);
writel(__EDRAM_BISTR_START, (rb + CT2_MBIST_CTL_REG));
udelay(1000);
writel(0, (rb + CT2_MBIST_CTL_REG));
}
void
bfa_ioc_ct2_mac_reset(void __iomem *rb)
{
u32 r32;
bfa_ioc_ct2_sclk_init(rb);
bfa_ioc_ct2_lclk_init(rb);
/*
* release soft reset on s_clk & l_clk
*/
r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
writel(r32 & ~__APP_PLL_SCLK_LOGIC_SOFT_RESET,
(rb + CT2_APP_PLL_SCLK_CTL_REG));
/*
* release soft reset on s_clk & l_clk
@ -773,61 +777,83 @@ bfa_ioc_ct2_lclk_init(void __iomem *rb, enum bfi_asic_mode mode)
r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
writel(r32 & ~__APP_PLL_LCLK_LOGIC_SOFT_RESET,
(rb + CT2_APP_PLL_LCLK_CTL_REG));
/* put port0, port1 MAC & AHB in reset */
writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
rb + CT2_CSI_MAC_CONTROL_REG(0));
writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
rb + CT2_CSI_MAC_CONTROL_REG(1));
}
static void
bfa_ioc_ct2_mem_init(void __iomem *rb, enum bfi_asic_mode mode)
{
bfa_boolean_t fcmode;
u32 r32;
fcmode = (mode == BFI_ASIC_MODE_FC) || (mode == BFI_ASIC_MODE_FC16);
if (!fcmode) {
writel(__PMM_1T_PNDB_P | __PMM_1T_RESET_P,
(rb + CT2_PMM_1T_CONTROL_REG_P0));
writel(__PMM_1T_PNDB_P | __PMM_1T_RESET_P,
(rb + CT2_PMM_1T_CONTROL_REG_P1));
}
r32 = readl((rb + PSS_CTL_REG));
r32 &= ~__PSS_LMEM_RESET;
writel(r32, (rb + PSS_CTL_REG));
udelay(1000);
if (!fcmode) {
writel(__PMM_1T_PNDB_P, (rb + CT2_PMM_1T_CONTROL_REG_P0));
writel(__PMM_1T_PNDB_P, (rb + CT2_PMM_1T_CONTROL_REG_P1));
}
writel(__EDRAM_BISTR_START, (rb + CT2_MBIST_CTL_REG));
udelay(1000);
writel(0, (rb + CT2_MBIST_CTL_REG));
}
#define CT2_NFC_MAX_DELAY 1000
bfa_status_t
bfa_ioc_ct2_pll_init(void __iomem *rb, enum bfi_asic_mode mode)
{
u32 r32;
u32 wgn, r32;
int i;
/*
* Initialize PLL if not already done by NFC
*/
r32 = readl((rb + CT2_WGN_STATUS));
wgn = readl(rb + CT2_WGN_STATUS);
if (!(wgn & __GLBL_PF_VF_CFG_RDY)) {
writel(__HALT_NFC_CONTROLLER, rb + CT2_NFC_CSR_SET_REG);
for (i = 0; i < CT2_NFC_MAX_DELAY; i++) {
r32 = readl(rb + CT2_NFC_CSR_SET_REG);
if (r32 & __NFC_CONTROLLER_HALTED)
break;
udelay(1000);
}
}
writel(__HALT_NFC_CONTROLLER, (rb + CT2_NFC_CSR_SET_REG));
/*
* Mask the interrupts and clear any
* pending interrupts.
*/
writel(1, (rb + CT2_LPU0_HOSTFN_MBOX0_MSK));
writel(1, (rb + CT2_LPU1_HOSTFN_MBOX0_MSK));
bfa_ioc_ct2_sclk_init(rb, mode);
bfa_ioc_ct2_lclk_init(rb, mode);
bfa_ioc_ct2_mem_init(rb, mode);
r32 = readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
if (r32 == 1) {
writel(1, (rb + CT2_LPU0_HOSTFN_CMD_STAT));
readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
}
r32 = readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
if (r32 == 1) {
writel(1, (rb + CT2_LPU1_HOSTFN_CMD_STAT));
readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
}
bfa_ioc_ct2_mac_reset(rb);
bfa_ioc_ct2_sclk_init(rb);
bfa_ioc_ct2_lclk_init(rb);
/*
* release soft reset on s_clk & l_clk
*/
r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
writel(r32 & ~__APP_PLL_SCLK_LOGIC_SOFT_RESET,
(rb + CT2_APP_PLL_SCLK_CTL_REG));
/*
* release soft reset on s_clk & l_clk
*/
r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
writel(r32 & ~__APP_PLL_LCLK_LOGIC_SOFT_RESET,
(rb + CT2_APP_PLL_LCLK_CTL_REG));
/*
* Announce flash device presence, if flash was corrupted.
*/
if (r32 == (__WGN_READY | __GLBL_PF_VF_CFG_RDY)) {
writel(0, (rb + PSS_GPIO_OUT_REG));
writel(1, (rb + PSS_GPIO_OE_REG));
if (wgn == (__WGN_READY | __GLBL_PF_VF_CFG_RDY)) {
r32 = readl((rb + PSS_GPIO_OUT_REG));
writel(r32 & ~1, (rb + PSS_GPIO_OUT_REG));
r32 = readl((rb + PSS_GPIO_OE_REG));
writel(r32 | 1, (rb + PSS_GPIO_OE_REG));
}
bfa_ioc_ct2_mem_init(rb);
writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC0_STATE_REG));
writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC1_STATE_REG));
return BFA_STATUS_OK;

15
drivers/scsi/bfa/bfad.c
View File

@ -784,11 +784,14 @@ bfad_pci_init(struct pci_dev *pdev, struct bfad_s *bfad)
pci_set_master(pdev);
if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0)
if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) ||
(pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0)) {
if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) ||
(pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) {
printk(KERN_ERR "pci_set_dma_mask fail %p\n", pdev);
goto out_release_region;
}
}
bfad->pci_bar0_kva = pci_iomap(pdev, 0, pci_resource_len(pdev, 0));
bfad->pci_bar2_kva = pci_iomap(pdev, 2, pci_resource_len(pdev, 2));
@ -1291,6 +1294,7 @@ bfad_setup_intr(struct bfad_s *bfad)
u32 mask = 0, i, num_bit = 0, max_bit = 0;
struct msix_entry msix_entries[MAX_MSIX_ENTRY];
struct pci_dev *pdev = bfad->pcidev;
u16 reg;
/* Call BFA to get the msix map for this PCI function. */
bfa_msix_getvecs(&bfad->bfa, &mask, &num_bit, &max_bit);
@ -1320,6 +1324,13 @@ bfad_setup_intr(struct bfad_s *bfad)
goto line_based;
}
/* Disable INTX in MSI-X mode */
pci_read_config_word(pdev, PCI_COMMAND, &reg);
if (!(reg & PCI_COMMAND_INTX_DISABLE))
pci_write_config_word(pdev, PCI_COMMAND,
reg | PCI_COMMAND_INTX_DISABLE);
/* Save the vectors */
for (i = 0; i < bfad->nvec; i++) {
bfa_trc(bfad, msix_entries[i].vector);

2
drivers/scsi/bfa/bfi.h
View File

@ -253,7 +253,7 @@ struct bfi_ioc_attr_s {
u32 adapter_prop; /* adapter properties */
u16 maxfrsize; /* max receive frame size */
char asic_rev;
u8 ic; /* initial capability */
u8 rsvd_d;
char fw_version[BFA_VERSION_LEN];
char optrom_version[BFA_VERSION_LEN];
struct bfa_mfg_vpd_s vpd;

3
drivers/scsi/bfa/bfi_ms.h
View File

@ -48,7 +48,8 @@ struct bfi_iocfc_cfg_s {
u32 endian_sig; /* endian signature of host */
__be16 num_ioim_reqs;
__be16 num_fwtio_reqs;
u8 rsvd[4];
u8 single_msix_vec;
u8 rsvd[3];
/*
* Request and response circular queue base addresses, size and

11
drivers/scsi/bfa/bfi_reg.h
View File

@ -277,6 +277,8 @@ enum {
#define CT2_LPU1_HOSTFN_CMD_STAT (CT2_PCI_CPQ_BASE + 0x8c)
#define CT2_HOSTFN_LPU0_READ_STAT (CT2_PCI_CPQ_BASE + 0x90)
#define CT2_HOSTFN_LPU1_READ_STAT (CT2_PCI_CPQ_BASE + 0x94)
#define CT2_LPU0_HOSTFN_MBOX0_MSK (CT2_PCI_CPQ_BASE + 0x98)
#define CT2_LPU1_HOSTFN_MBOX0_MSK (CT2_PCI_CPQ_BASE + 0x9C)
#define CT2_HOST_SEM0_REG 0x000148f0
#define CT2_HOST_SEM1_REG 0x000148f4
#define CT2_HOST_SEM2_REG 0x000148f8
@ -337,6 +339,15 @@ enum {
#define __GLBL_PF_VF_CFG_RDY 0x00000200
#define CT2_NFC_CSR_SET_REG 0x00027424
#define __HALT_NFC_CONTROLLER 0x00000002
#define __NFC_CONTROLLER_HALTED 0x00001000
#define CT2_CSI_MAC0_CONTROL_REG 0x000270d0
#define __CSI_MAC_RESET 0x00000010
#define __CSI_MAC_AHB_RESET 0x00000008
#define CT2_CSI_MAC1_CONTROL_REG 0x000270d4
#define CT2_CSI_MAC_CONTROL_REG(__n) \
(CT2_CSI_MAC0_CONTROL_REG + \
(__n) * (CT2_CSI_MAC1_CONTROL_REG - CT2_CSI_MAC0_CONTROL_REG))
/*
* Name semaphore registers based on usage