Problem In Calculating Sum For A Column

Hi,
Im having a table

table1
col1 col2 col3
1 1 1
1 1 1
2 1 2
2 1 2
1 3 1
1 3 1

im calculating sum of col1,col2 and col3

select sum(col1) + sum(col2) + sum(col3) from table1
where col1 =1 and
col2 = 1 and
col3 = 1
I have one problem
i want to get the sum of columns where the value is one
the output i want will be like this
12
but im getting output as
6
it is eliminating the rows where col1,col2 and col3 is not equal to 1

can anyone help