On Fri, Aug 02, 2013 at 05:43:04PM -0500, Aravind Gopalakrishnan wrote:
> Adding support for handling ECC error decoding for new F15 models.
> On newer models, support has been included for upto 4 DCT's,
> however, only DCT0 and DCT3 are currently configured. (Refer BKDG Section 2.10)
> There is also a new "Routing DRAM Requests" algorithm for this model.
>
> Tested on Fam15h M30h with ECC turned on using mce_amd_inj facility and
> verified to be functionally correct.
>
> Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@xxxxxxx>
>
> diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
> index 8b6a034..42dab12 100644
> --- a/drivers/edac/amd64_edac.c
> +++ b/drivers/edac/amd64_edac.c
> @@ -123,7 +123,11 @@ static void f15h_select_dct(struct amd64_pvt *pvt, u8 dct)
> u32 reg = 0;
>
> amd64_read_pci_cfg(pvt->F1, DCT_CFG_SEL, ®);
> - reg &= 0xfffffffe;
> + /*
> + * If Fam15h M30h, mask out last two bits for programming dct.
> + * Else, only mask out the last bit.
> + */
No need for that comment.
> + reg &= (F15_M30H_CPUS) ? 0xfffffffc : 0xfffffff8;
Let's see, I had 0xfffffffe and now you have 0xfffffff8. See the
difference?
Also, F15H_M30H_CPUS is an enum, AFAICT, and it will always be true as
long as it is != 0. What you meant here is "F15H_M30H_CPU". So you see
how those defines are misleading and made you use them wrong.
So let's correct it all and make it more clear:
reg &= (pvt->model >= 0x30) ? ~3 : ~1;
we don't need to look at the family because this function -
f15h_select_dct - is called on F15h only anyway.
> reg |= dct;
> amd64_write_pci_cfg(pvt->F1, DCT_CFG_SEL, reg);
> }
> @@ -133,8 +137,12 @@ static int f15_read_dct_pci_cfg(struct amd64_pvt *pvt, int addr, u32 *val,
> {
> u8 dct = 0;
>
> + /*
> + * For F15 M30h, the second dct is DCT 3.
> + * Refer BKDG Section 2.10
> + */
> if (addr >= 0x140 && addr <= 0x1a0) {
> - dct = 1;
> + dct = F15H_M30H_CPU ? 3 : 1;
ditto here: use pvt->model like above.
> addr -= 0x100;
> }
>
> @@ -205,8 +213,9 @@ static int amd64_set_scrub_rate(struct mem_ctl_info *mci, u32 bw)
> if (boot_cpu_data.x86 == 0xf)
> min_scrubrate = 0x0;
>
> - /* F15h Erratum #505 */
> - if (boot_cpu_data.x86 == 0x15)
> + /* F15h Models 0x00 - 0x0f Erratum #505 */
Hmm, are you sure this erratum is fixed in SR? Talk to Eric about it
first, please. RG says "No fix planned".
> + if (boot_cpu_data.x86 == 0x15 &&
> + boot_cpu_data.x86_model != 0x30)
> f15h_select_dct(pvt, 0);
>
> return __amd64_set_scrub_rate(pvt->F3, bw, min_scrubrate);
> @@ -218,8 +227,9 @@ static int amd64_get_scrub_rate(struct mem_ctl_info *mci)
> u32 scrubval = 0;
> int i, retval = -EINVAL;
>
> - /* F15h Erratum #505 */
> - if (boot_cpu_data.x86 == 0x15)
> + /* F15h Models 0x00 - 0x0f Erratum #505 */
ditto.
> + if (boot_cpu_data.x86 == 0x15 &&
> + boot_cpu_data.x86_model != 0x30)
> f15h_select_dct(pvt, 0);
>
> amd64_read_pci_cfg(pvt->F3, SCRCTRL, &scrubval);
> @@ -343,10 +353,10 @@ static void get_cs_base_and_mask(struct amd64_pvt *pvt, int csrow, u8 dct,
> addr_shift = 4;
>
> /*
> - * F16h needs two addr_shift values: 8 for high and 6 for low
> - * (cf. F16h BKDG).
> + * F16h and F15h(model 30h) needs two addr_shift values:
> + * 8 for high and 6 for low (cf. F16h BKDG).
> */
> - } else if (boot_cpu_data.x86 == 0x16) {
> + } else if (boot_cpu_data.x86 == 0x16 || F15H_M30H_CPU) {
pvt->family and ->model please. This macro is ugly and confusing.
> csbase = pvt->csels[dct].csbases[csrow];
> csmask = pvt->csels[dct].csmasks[csrow >> 1];
>
> @@ -743,6 +753,9 @@ static void prep_chip_selects(struct amd64_pvt *pvt)
> if (boot_cpu_data.x86 == 0xf && pvt->ext_model < K8_REV_F) {
> pvt->csels[0].b_cnt = pvt->csels[1].b_cnt = 8;
> pvt->csels[0].m_cnt = pvt->csels[1].m_cnt = 8;
> + } else if (F15H_M30H_CPU) {
> + pvt->csels[0].b_cnt = pvt->csels[1].b_cnt = 4;
> + pvt->csels[0].m_cnt = pvt->csels[1].m_cnt = 2;
> } else {
> pvt->csels[0].b_cnt = pvt->csels[1].b_cnt = 8;
> pvt->csels[0].m_cnt = pvt->csels[1].m_cnt = 4;
> @@ -850,9 +863,9 @@ static u64 get_error_address(struct mce *m)
> addr = m->addr & GENMASK(start_bit, end_bit);
>
> /*
> - * Erratum 637 workaround
> + * Erratum 637 workaround for F15h Models 0x00 - 0x0f
Same here - RG says this erratum is, like 505, "No fix planned"
> */
> - if (c->x86 == 0x15) {
> + if (c->x86 == 0x15 && c->x86_model != 0x30) {
> struct amd64_pvt *pvt;
> u64 cc6_base, tmp_addr;
> u32 tmp;
> @@ -918,6 +931,7 @@ static void read_dram_base_limit_regs(struct amd64_pvt *pvt, unsigned range)
> struct amd_northbridge *nb;
> struct pci_dev *misc, *f1 = NULL;
> struct cpuinfo_x86 *c = &boot_cpu_data;
> + unsigned int pci_func;
> int off = range << 3;
> u32 llim;
>
> @@ -942,7 +956,12 @@ static void read_dram_base_limit_regs(struct amd64_pvt *pvt, unsigned range)
> return;
>
> misc = nb->misc;
> - f1 = pci_get_related_function(misc->vendor, PCI_DEVICE_ID_AMD_15H_NB_F1, misc);
> +
> + pci_func = (c->x86_model == 0x30) ? PCI_DEVICE_ID_AMD_15H_M30H_NB_F1
> + : PCI_DEVICE_ID_AMD_15H_M30H_NB_F1;
Something's wrong with this line :-)
> +
> + f1 = pci_get_related_function(misc->vendor, pci_func, misc);
> +
> if (WARN_ON(!f1))
> return;
>
> @@ -1173,7 +1192,8 @@ static int f15_dbam_to_chip_select(struct amd64_pvt *pvt, u8 dct,
> }
>
> /*
> - * F16h has only limited cs_modes
> + * F16h has only limited cs_modes.
> + * F15 M30h follows the same pattern.
> */
> static int f16_dbam_to_chip_select(struct amd64_pvt *pvt, u8 dct,
> unsigned cs_mode)
> @@ -1218,6 +1238,51 @@ static void read_dram_ctl_register(struct amd64_pvt *pvt)
> }
>
> /*
> + * Determine channel (DCT) based on the interleaving mode:
> + * F15h M30h BKDG, 2.10.12 Memory Interleaving Modes.
> + */
> +static u8 f15_m30h_determine_channel(struct amd64_pvt *pvt, u64 sys_addr,
> + u8 intlv_en, int num_dcts_intlv, u32 dct_sel)
Arg indentation.
> +{
> + u8 channel = 0;
> + u8 select;
> + u8 intlv_addr = dct_sel_interleave_addr(pvt);
> +
> + if (!(intlv_en))
> + return (u8)(dct_sel);
> + /*
> + * If num_dcts_intlv == 2, them consider addr bit 8 or addr bit 9
> + * depending on intlv_addr, then return either channel = 0/1/2/3.
> + * If num_dcts_intlv == 4, consider either bits[8:9] or bits[9:10]
> + * depending on intlv_addr, then return the value obtained.
No need for that comment.
> + */
> +
> + if (num_dcts_intlv == 2) {
> + if (intlv_addr == 0x4)
> + select = (sys_addr >> 8) & BIT(0);
> + else if (intlv_addr == 0x5)
> + select = (sys_addr >> 9) & BIT(0);
So, basically you can take care of the two cases together by doing:
select = (sys_addr >> 8) & 0x3;
?
> + else
> + return -EINVAL;
> +
> + /* If select !=0, upper DCT selected, else lower DCT */
I think we can see that, no need for the comment.
> + channel = select ? 0x3 : 0;
> +
> + } else if (num_dcts_intlv == 4) {
> + if (intlv_addr == 0x4)
> + select = (sys_addr >> 8) & 0x3;
> + else if (intlv_addr == 0x5)
> + select = (sys_addr >> 9) & 0x3;
Ditto here, as above.
> + else
> + return -EINVAL;
> +
> + channel = select;
> + }
> +
> + return channel;
> +}
> +
> +/*
> * Determine channel (DCT) based on the interleaving mode: F10h BKDG, 2.8.9 Memory
> * Interleaving Modes.
> */
> @@ -1366,6 +1431,10 @@ static int f1x_lookup_addr_in_dct(u64 in_addr, u8 nid, u8 dct)
> (in_addr & cs_mask), (cs_base & cs_mask));
>
> if ((in_addr & cs_mask) == (cs_base & cs_mask)) {
> + if (F15H_M30H_CPU) {
> + cs_found = csrow;
> + break;
> + }
> cs_found = f10_process_possible_spare(pvt, dct, csrow);
>
> edac_dbg(1, " MATCH csrow=%d\n", cs_found);
> @@ -1492,20 +1561,151 @@ static int f1x_match_to_this_node(struct amd64_pvt *pvt, unsigned range,
> return cs_found;
> }
>
> -static int f1x_translate_sysaddr_to_cs(struct amd64_pvt *pvt, u64 sys_addr,
> - int *chan_sel)
> +/*
> + * Routing DRAM Requests algorithm is different for F15h M30h.
> + * It is cleaner to use a brand new function rather than
> + * adding quirks in the more generic 'f1x_match_to_this_node'.
> + * Refer "2.10.5 DRAM Routing Requests" in BKDG for info.
> + */
This comment belongs in the commit message of this patch.
> +static int f15_m30h_match_to_this_node(struct amd64_pvt *pvt, unsigned range,
> + u64 sys_addr, int *chan_sel)
Arg indentation
> +{
> + int cs_found = -EINVAL;
> + int num_dcts_intlv = 0;
> + u64 chan_addr, chan_offset, high_addr_offset;
> + u64 dct_base, dct_limit;
> + u32 dct_cont_base_reg, dct_cont_limit_reg, tmp;
> + u8 channel, alias_channel, leg_mmio_hole;
> +
> +
> + /* Read DRAM Control registers specific to F15 M30h. */
No need for the comment.
> + amd64_read_pci_cfg(pvt->F1, DRAM_CONT_BASE, &dct_cont_base_reg);
> + amd64_read_pci_cfg(pvt->F1, DRAM_CONT_LIMIT, &dct_cont_limit_reg);
> +
> + /* Extract F15h M30h specific config */
No need for the comment.
> + u64 dhar_offset = f10_dhar_offset(pvt);
> + u8 dct_offset_en = (u8) ((dct_cont_base_reg >> 3) & BIT(0));
> + u8 dct_sel = (u8) ((dct_cont_base_reg >> 4) & 0x7);
> + u8 intlv_addr = dct_sel_interleave_addr(pvt);
> + u8 node_id = dram_dst_node(pvt, range);
> + u8 intlv_en = dram_intlv_en(pvt, range);
> +
> + edac_dbg(1, "(range %d) SystemAddr= 0x%llx Limit=0x%llx\n",
> + range, sys_addr, get_dram_limit(pvt, range));
> +
> + if (!(get_dram_base(pvt, range) <= sys_addr) &&
> + !(get_dram_limit(pvt, range) >= sys_addr))
> + return -EINVAL;
> +
> + if (dhar_valid(pvt) &&
> + dhar_base(pvt) <= sys_addr &&
> + sys_addr < BIT_64(32)) {
> + amd64_warn("Huh? Address is in the MMIO hole: 0x%016llx\n",
> + sys_addr);
> + return -EINVAL;
> + }
> +
> + /* Verify sys_addr is within DCT Range. */
> + dct_base = (dct_sel_baseaddr(pvt) << 27);
> + dct_limit = (((dct_cont_limit_reg >> 11) & 0x1FFF) << 27) | 0x7FFFFFF;
> + if (!(dct_cont_base_reg & BIT(0)) &&
> + !(dct_base <= sys_addr && dct_limit >= sys_addr)) {
> + return -EINVAL;
> + }
> +
> + /* Verify number of dct's that participate in channel interleaving. */
> + num_dcts_intlv = (int) hweight8(intlv_en);
> +
> + if (!(num_dcts_intlv % 2 == 0) || (num_dcts_intlv > 4))
> + return -EINVAL;
> +
> + channel = f15_m30h_determine_channel(pvt, sys_addr, intlv_en,
> + num_dcts_intlv, dct_sel);
> +
> + /* Verify if we stay within the MAX number of channels allowed */
s/if//
> + if (channel > 4 || channel < 0)
> + return -EINVAL;
> +
> + leg_mmio_hole = (u8) (dct_cont_base_reg >> 1 & BIT(0));
> +
> + /* Get normalized DCT addr */
> + if (leg_mmio_hole && (sys_addr >= BIT_64(32)))
> + chan_offset = dhar_offset;
> + else
> + chan_offset = dct_base;
> +
> + chan_addr = sys_addr - chan_offset;
> +
> + /* remove channel interleave */
> + if (num_dcts_intlv == 2) {
> + if (intlv_addr == 0x4)
> + chan_addr = ((chan_addr >> 9) << 8) |
> + (chan_addr & 0xff);
> + else if (intlv_addr == 0x5)
> + chan_addr = ((chan_addr >> 10) << 9) |
> + (chan_addr & 0x1ff);
> + else
> + return -EINVAL;
> +
> + } else if (num_dcts_intlv == 4) {
> + if (intlv_addr == 0x4)
> + chan_addr = ((chan_addr >> 10) << 8) |
> + (chan_addr & 0xff);
> + else if (intlv_addr == 0x5)
> + chan_addr = ((chan_addr >> 11) << 9) |
> + (chan_addr & 0x1ff);
> + else
> + return -EINVAL;
> + }
> +
> + if (dct_offset_en) {
> + amd64_read_pci_cfg(pvt->F1,
> + DRAM_CONT_HIGH_OFF + (int) channel * 4,
> + &tmp);
> + chan_addr += ((tmp >> 11) & 0xfff) << 27;
> + }
> +
> + /* Set DCTCFGSEL = ChannelSelect */
No need for the comment.
> + f15h_select_dct(pvt, channel);
> +
> + edac_dbg(1, " Normalized DCT addr: 0x%llx\n", chan_addr);
> + /* Find the Chip select.. */
> + /*
> + * NOTE: if channel = 3, then alias it to 1.
> + * This is because, in F15 M30h, there is support for
> + * 4 DCT's, but only 2 are currently included in the architecture.
> + * They are DCT0 and DCT3. But we have read all registers of DCT3
> + * into pvt->csels[1]. So we need to use '1' here to get correct
> + * info. Refer F15 M30h BKDG Section 2.10 and 2.10.3 for clarifications
> + */
Comment needs block formatting.
> +
> + alias_channel = (channel == 3) ? 1 : channel;
> +
> + cs_found = f1x_lookup_addr_in_dct(chan_addr, node_id, alias_channel);
> +
> + if (cs_found >= 0)
> + *chan_sel = alias_channel;
> +
> + return cs_found;
> +}
> +
> +static int
> +f1x_translate_sysaddr_to_cs(struct amd64_pvt *pvt,
> + u64 sys_addr,
> + int *chan_sel)
> {
Arg indentation.
> int cs_found = -EINVAL;
> unsigned range;
>
> for (range = 0; range < DRAM_RANGES; range++) {
> -
> if (!dram_rw(pvt, range))
> continue;
> -
> - if ((get_dram_base(pvt, range) <= sys_addr) &&
> - (get_dram_limit(pvt, range) >= sys_addr)) {
> -
> + if (F15H_M30H_CPU)
> + cs_found = f15_m30h_match_to_this_node(pvt, range,
> + sys_addr,
> + chan_sel);
> + else if ((get_dram_base(pvt, range) <= sys_addr) &&
> + (get_dram_limit(pvt, range) >= sys_addr)) {
> cs_found = f1x_match_to_this_node(pvt, range,
> sys_addr, chan_sel);
> if (cs_found >= 0)
> @@ -1624,6 +1824,17 @@ static struct amd64_family_type amd64_family_types[] = {
> .read_dct_pci_cfg = f15_read_dct_pci_cfg,
> }
> },
> + [F15_M30H_CPUS] = {
> + .ctl_name = "F15h_M30h",
> + .f1_id = PCI_DEVICE_ID_AMD_15H_M30H_NB_F1,
> + .f3_id = PCI_DEVICE_ID_AMD_15H_M30H_NB_F3,
> + .ops = {
> + .early_channel_count = f1x_early_channel_count,
> + .map_sysaddr_to_csrow = f1x_map_sysaddr_to_csrow,
> + .dbam_to_cs = f16_dbam_to_chip_select,
> + .read_dct_pci_cfg = f15_read_dct_pci_cfg,
> + }
> + },
> [F16_CPUS] = {
> .ctl_name = "F16h",
> .f1_id = PCI_DEVICE_ID_AMD_16H_NB_F1,
> @@ -2388,27 +2599,44 @@ static void setup_mci_misc_attrs(struct mem_ctl_info *mci,
> static struct amd64_family_type *amd64_per_family_init(struct amd64_pvt *pvt)
> {
> u8 fam = boot_cpu_data.x86;
> + u8 model = boot_cpu_data.x86_model;
> struct amd64_family_type *fam_type = NULL;
>
> switch (fam) {
> case 0xf:
> fam_type = &amd64_family_types[K8_CPUS];
> pvt->ops = &amd64_family_types[K8_CPUS].ops;
> + pvt->family = fam;
You could call it pvt->fam for less typing if you like.
> + pvt->model = model;
> break;
>
> case 0x10:
> fam_type = &amd64_family_types[F10_CPUS];
> pvt->ops = &amd64_family_types[F10_CPUS].ops;
> + pvt->family = fam;
> + pvt->model = model;
> break;
>
> case 0x15:
> + if (model == 0x30) {
> + fam_type = &amd64_family_types[F15_M30H_CPUS];
> + pvt->ops = &amd64_family_types[F15_M30H_CPUS].ops;
> + pvt->family = fam;
> + pvt->model = model;
> + break;
> + }
> +
> fam_type = &amd64_family_types[F15_CPUS];
> pvt->ops = &amd64_family_types[F15_CPUS].ops;
> + pvt->family = fam;
> + pvt->model = model;
> break;
>
> case 0x16:
> fam_type = &amd64_family_types[F16_CPUS];
> pvt->ops = &amd64_family_types[F16_CPUS].ops;
> + pvt->family = fam;
> + pvt->model = model;
This ->family and ->model assignment is repeated in every case. What
do you think, could it probably be done only once, outside the switch
statement?
> break;
>
> default:
> @@ -2638,6 +2866,14 @@ static DEFINE_PCI_DEVICE_TABLE(amd64_pci_table) = {
> },
> {
> .vendor = PCI_VENDOR_ID_AMD,
> + .device = PCI_DEVICE_ID_AMD_15H_M30H_NB_F2,
> + .subvendor = PCI_ANY_ID,
> + .subdevice = PCI_ANY_ID,
> + .class = 0,
> + .class_mask = 0,
> + },
> + {
> + .vendor = PCI_VENDOR_ID_AMD,
> .device = PCI_DEVICE_ID_AMD_16H_NB_F2,
> .subvendor = PCI_ANY_ID,
> .subdevice = PCI_ANY_ID,
> diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
> index 2c6f113..ff15f14 100644
> --- a/drivers/edac/amd64_edac.h
> +++ b/drivers/edac/amd64_edac.h
> @@ -170,6 +170,8 @@
> /*
> * PCI-defined configuration space registers
> */
> +#define PCI_DEVICE_ID_AMD_15H_M30H_NB_F1 0x141b
> +#define PCI_DEVICE_ID_AMD_15H_M30H_NB_F2 0x141c
> #define PCI_DEVICE_ID_AMD_15H_NB_F1 0x1601
> #define PCI_DEVICE_ID_AMD_15H_NB_F2 0x1602
> #define PCI_DEVICE_ID_AMD_16H_NB_F1 0x1531
> @@ -181,13 +183,24 @@
> #define DRAM_BASE_LO 0x40
> #define DRAM_LIMIT_LO 0x44
>
> -#define dram_intlv_en(pvt, i) ((u8)((pvt->ranges[i].base.lo >> 8) & 0x7))
> +/*
> + * F15 M30h DRAM Controller Base/Limit
> + * D18F1x2[1C:00]
> + */
> +#define DRAM_CONT_BASE 0x200
> +#define DRAM_CONT_LIMIT 0x204
> +
> +/*
> + * F15 M30h DRAM Controller High Addre Offset
> + * D18F1x2[4C:40]
> + */
> +#define DRAM_CONT_HIGH_OFF 0x240
> +
> #define dram_rw(pvt, i) ((u8)(pvt->ranges[i].base.lo & 0x3))
> #define dram_intlv_sel(pvt, i) ((u8)((pvt->ranges[i].lim.lo >> 8) & 0x7))
> #define dram_dst_node(pvt, i) ((u8)(pvt->ranges[i].lim.lo & 0x7))
>
> #define DHAR 0xf0
> -#define dhar_valid(pvt) ((pvt)->dhar & BIT(0))
> #define dhar_mem_hoist_valid(pvt) ((pvt)->dhar & BIT(1))
> #define dhar_base(pvt) ((pvt)->dhar & 0xff000000)
> #define k8_dhar_offset(pvt) (((pvt)->dhar & 0x0000ff00) << 16)
> @@ -234,8 +247,6 @@
> #define DDR3_MODE BIT(8)
>
> #define DCT_SEL_LO 0x110
> -#define dct_sel_baseaddr(pvt) ((pvt)->dct_sel_lo & 0xFFFFF800)
> -#define dct_sel_interleave_addr(pvt) (((pvt)->dct_sel_lo >> 6) & 0x3)
> #define dct_high_range_enabled(pvt) ((pvt)->dct_sel_lo & BIT(0))
> #define dct_interleave_enabled(pvt) ((pvt)->dct_sel_lo & BIT(2))
>
> @@ -293,10 +304,14 @@
> /* MSRs */
> #define MSR_MCGCTL_NBE BIT(4)
>
> +/* Helper Macro for F15h M30h */
> +#define F15H_M30H_CPU ((pvt->family == 0x15) && \
> + (pvt->model == 0x30))
Please drop this macro - the condition is not that complicated to write
out and not error prone.
> enum amd_families {
> K8_CPUS = 0,
> F10_CPUS,
> F15_CPUS,
> + F15_M30H_CPUS,
> F16_CPUS,
> NUM_FAMILIES,
> };
> @@ -337,6 +352,8 @@ struct amd64_pvt {
> struct pci_dev *F1, *F2, *F3;
>
> u16 mc_node_id; /* MC index of this MC node */
> + u8 family; /* CPU family */
> + u8 model; /* CPU model */
> int ext_model; /* extended model value of this node */
> int channel_count;
>
> @@ -414,6 +431,14 @@ static inline u16 extract_syndrome(u64 status)
> return ((status >> 47) & 0xff) | ((status >> 16) & 0xff00);
> }
>
> +static inline u8 dct_sel_interleave_addr(struct amd64_pvt *pvt)
> +{
> + if (F15H_M30H_CPU)
> + return (((pvt->dct_sel_hi >> 9) & 0x1) << 2) |
> + ((pvt->dct_sel_lo >> 6) & 0x3);
> +
> + return ((pvt)->dct_sel_lo >> 6) & 0x3;
> +}
> /*
> * per-node ECC settings descriptor
> */
> @@ -504,3 +529,33 @@ static inline void enable_caches(void *dummy)
> {
> write_cr0(read_cr0() & ~X86_CR0_CD);
> }
> +
> +static inline u8 dram_intlv_en(struct amd64_pvt *pvt, unsigned int i)
> +{
> + u32 tmp;
> + if (F15H_M30H_CPU) {
u32 tmp inside the if-statement.
> + amd64_read_pci_cfg(pvt->F1, DRAM_CONT_LIMIT, &tmp);
> + return (u8) tmp & 0xF;
> + }
> + return (u8) (pvt->ranges[i].base.lo >> 8) & 0x7;
> +}
> +
> +static inline u8 dhar_valid(struct amd64_pvt *pvt)
> +{
> + u32 tmp;
> + if (F15H_M30H_CPU) {
ditto.
> + amd64_read_pci_cfg(pvt->F1, DRAM_CONT_BASE, &tmp);
> + return (tmp >> 1) & BIT(0);
> + }
> + return (pvt)->dhar & BIT(0);
> +}
> +
> +static inline u32 dct_sel_baseaddr(struct amd64_pvt *pvt)
> +{
> + u32 tmp;
> + if (F15H_M30H_CPU) {
ditto.
> + amd64_read_pci_cfg(pvt->F1, DRAM_CONT_BASE, &tmp);
> + return (tmp >> 11) & 0x1FFF;
> + }
> + return (pvt)->dct_sel_lo & 0xFFFFF800;
> +}
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
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